/* 全面主题优化 - 修复所有硬编码颜色和样式问题 */

/* ==================== 全局样式修复 ==================== */
[data-theme="light"] {
  /* 修复所有硬编码的背景色 */
  background: var(--dark-bg) !important;
  color: var(--text-primary) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 导航栏和菜单修复 ==================== */
[data-theme="light"] .top-navbar {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) !important;
  border-bottom: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .sidebar {
  background: var(--card-bg) !important;
  border-right: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .menu-item {
  color: var(--text-primary) !important;
  border-bottom: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .menu-item:hover,
[data-theme="light"] .menu-item.active {
  background: linear-gradient(90deg, rgba(0, 102, 255, 0.1), transparent) !important;
  color: var(--primary-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 面板和卡片修复 ==================== */
[data-theme="light"] .panel {
  background: var(--card-bg) !important;
  border: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .panel-header {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) !important;
  color: white !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .info-card {
  background: var(--card-bg) !important;
  border: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .info-card .card-header {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) !important;
  color: white !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 按钮样式修复 ==================== */
[data-theme="light"] .btn {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)) !important;
  color: white !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .btn-secondary {
  background: linear-gradient(45deg, var(--text-secondary), var(--border-color)) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .btn-correct {
  background: linear-gradient(45deg, var(--success-color), #00a876) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .btn-wrong {
  background: linear-gradient(45deg, var(--error-color), #ff4b2b) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 表单元素修复 ==================== */
[data-theme="light"] select,
[data-theme="light"] input,
[data-theme="light"] textarea {
  background: var(--card-bg) !important;
  color: var(--text-primary) !important;
  border: 2px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] select:hover,
[data-theme="light"] input:hover,
[data-theme="light"] textarea:hover {
  border-color: var(--primary-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] select:focus,
[data-theme="light"] input:focus,
[data-theme="light"] textarea:focus {
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 进度条修复 ==================== */
[data-theme="light"] .progress {
  background: var(--darker-bg) !important;
  border: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .progress-bar {
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color)) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 表格样式修复 ==================== */
[data-theme="light"] table {
  background: var(--card-bg) !important;
  border: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] th {
  background: linear-gradient(135deg, var(#ffffff), var(#ffffff)) !important;
  color: #000000 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] tr:nth-child(even) {
  background: rgba(0, 102, 255, 0.03) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] tr:hover {
  background: rgba(0, 102, 255, 0.08) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 模态框修复 ==================== */
[data-theme="light"] .modal-content {
  background: var(--card-bg) !important;
  border: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .modal-header {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)) !important;
  color: white !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== AI全脑速记页面专项修复 ==================== */
[data-theme="light"] #word-memory-container,
[data-theme="light"] .word-memory-panel {
  background: var(--card-bg) !important;
  border: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] #volcano-ai-memory {
  background: transparent !important;
  border: none !important;
  border-radius: 0 !important;
  padding: 0 !important;
  margin: 0 !important;
  box-shadow: none !important;
  width: 100% !important;
  box-sizing: border-box !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .ai-memory-content {
  color: var(--text-primary) !important;
  line-height: 1.6 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .memory-method-label {
  color: var(--text-primary) !important;
  font-weight: normal !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .mnemonic-example {
  background: rgba(0, 102, 255, 0.05) !important;
  border-left: 3px solid var(--primary-color) !important;
  padding: 10px 15px !important;
  border-radius: 4px !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 学习模式相关修复 ==================== */
[data-theme="light"] .learn-mode-info {
  background: rgba(0, 102, 255, 0.05) !important;
  border: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .comprehension-option {
  background: var(--card-bg) !important;
  border: 2px solid var(--border-color) !important;
  color: #000000 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .comprehension-option:hover {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .comprehension-option.selected {
  background: rgba(0, 102, 255, 0.2) !important;
  border-color: var(--primary-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* AI故事记单词填空题题目文本样式 */
[data-theme="light"] .question-text {
  color: #000000 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ===================================================
   AI故事背单词全面优化 - 浅色主题青少年专用超大字体版本
   =================================================== */

/* 文章标题 - 青少年专用超大字体 */
[data-theme="light"] #article-title {
  font-size: 2.8rem !important;
  font-weight: 800 !important;
  color: var(--primary-color) !important;
  margin: 40px 0 25px 0 !important;
  text-align: center !important;
  text-shadow: 0 0 10px rgba(0, 102, 255, 0.3) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.5px !important;
  padding: 15px 25px !important;
  background: rgba(0, 102, 255, 0.05) !important;
  border-radius: 15px !important;
  border: 2px solid rgba(0, 102, 255, 0.3) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 文章内容 - 青少年专用超大字体 */
[data-theme="light"] #article-content {
  padding: 10px 50px !important;
  background: rgba(0, 102, 255, 0.03) !important;
  border-radius: 20px !important;
  color: var(--text-primary) !important;
  font-weight: 500 !important;
  font-size: 22px !important;
  line-height: 1.4 !important;
  letter-spacing: 0.8px !important;
  margin: 30px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  box-shadow: inset 0 0 15px rgba(0, 102, 255, 0.05) !important;
  white-space: pre-wrap !important;
  word-break: break-word !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  text-align: justify !important;
  text-justify: inter-word !important;
}

html:not([data-theme="light"]) #article-content {
  color: #ffffff !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 问题文本 - 青少年专用超大字体 */
[data-theme="light"] .question-text {
  font-size: 1.8rem !important;
  font-weight: 600 !important;
  color: var(--text-primary) !important;
  margin: 35px 0 25px 0 !important;
  padding: 25px 35px !important;
  background: rgba(0, 102, 255, 0.03) !important;
  border-radius: 18px !important;
  border: 2px solid rgba(0, 102, 255, 0.25) !important;
  line-height: 1.8 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 问题选项 - 青少年专用超大字体 */
[data-theme="light"] .question-option {
  font-size: 1.6rem !important;
  padding: 22px 30px !important;
  margin: 20px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 18px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.7 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.8) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 选项标签样式 */
[data-theme="light"] .option-label {
  font-size: 1.6rem !important;
  font-weight: 600 !important;
  cursor: pointer !important;
  display: flex !important;
  align-items: center !important;
  width: 100% !important;
  height: 100% !important;
  margin: 0 !important;
  padding: 0 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .option-label input[type="radio"] {
  margin-right: 15px !important;
  transform: scale(1.5) !important;
  cursor: pointer !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 移除选项选择时的打勾标记 */
[data-theme="light"] .option-label.selected::before {
  display: none !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 提交答案按钮 - 青少年专用超大字体 */
[data-theme="light"] #submit-answers-btn {
  font-size: 1.8rem !important;
  padding: 25px 70px !important;
  font-weight: 800 !important;
  margin: 50px auto !important;
  border: 4px solid var(--primary-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 8px 30px rgba(0, 102, 255, 0.3) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.5px !important;
  min-width: 300px !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 报告区域 */
[data-theme="light"] #reading-report {
  margin-top: 60px !important;
  padding: 50px !important;
  border: 4px solid var(--primary-color) !important;
  border-radius: 25px !important;
  box-shadow: 0 0 40px rgba(0, 102, 255, 0.2) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] #reading-report h4 {
  font-size: 2.4rem !important;
  font-weight: 800 !important;
  border-bottom: 4px solid var(--primary-color) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1px !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 报告内容 */
[data-theme="light"] #report-content {
  font-size: 1.7rem !important;
  line-height: 2.0 !important;
  font-weight: 500 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 分数显示 - 红色手写体 */
[data-theme="light"] #report-content .score-display {
  font-size: 4rem !important;
  font-weight: 700 !important;
  color: #e53935 !important;
  text-shadow: none !important;
  font-family: 'Brush Script MT', 'Comic Sans MS', 'Ma Shan Zheng', 'STXingkai', 'KaiTi', cursive, sans-serif !important;
  padding: 20px !important;
  background: rgba(229, 57, 53, 0.08) !important;
  border: 3px solid #e53935 !important;
  border-radius: 20px !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 表格样式 */
[data-theme="light"] .assessment-details {
  margin: 50px 0 !important;
  border-radius: 20px !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15) !important;
  padding: 20px !important;
  background: rgba(255, 255, 255, 0.5) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .assessment-details h4 {
  font-size: 1.25rem !important;
  font-weight: 800 !important;
  border-left: 8px solid var(--primary-color) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 0.8px !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .assessment-details-table th {
  background: #e3f2fd !important;
  color: #1565c0 !important;
  padding: 20px 15px !important;
  font-weight: 700 !important;
  font-size: 1.2rem !important;
  border-bottom: 3px solid #2196f3 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 0.5px !important;
  text-shadow: none !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .assessment-details-table td {
  padding: 22px 18px !important;
  border-bottom: 2px solid rgba(0, 102, 255, 0.15) !important;
  font-size: 1.5rem !important;
  line-height: 1.8 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 表格列宽 */
[data-theme="light"] .assessment-details-table th:nth-child(1),
[data-theme="light"] .assessment-details-table td:nth-child(1) {
  width: 60px !important;
  font-size: 1.2rem !important;
  font-weight: 700 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .assessment-details-table th:nth-child(2),
[data-theme="light"] .assessment-details-table td:nth-child(2) {
  width: 180px !important;
  font-size: 1.15rem !important;
  font-weight: 500 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .assessment-details-table th:nth-child(3),
[data-theme="light"] .assessment-details-table td:nth-child(3) {
  width: 250px !important;
  font-size: 1.05rem !important;
  line-height: 1.6 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .assessment-details-table th:nth-child(4),
[data-theme="light"] .assessment-details-table td:nth-child(4) {
  width: 70px !important;
  font-size: 1.1rem !important;
  font-weight: 600 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .assessment-details-table th:nth-child(5),
[data-theme="light"] .assessment-details-table td:nth-child(5) {
  width: 70px !important;
  font-size: 1.1rem !important;
  font-weight: 600 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .assessment-details-table th:nth-child(6),
[data-theme="light"] .assessment-details-table td:nth-child(6) {
  width: 350px !important;
  font-size: 1rem !important;
  line-height: 1.6 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .assessment-details-table th:nth-child(7),
[data-theme="light"] .assessment-details-table td:nth-child(7) {
  width: 80px !important;
  font-size: 1.15rem !important;
  font-weight: 700 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 正确错误标记 - 浅色主题（只保留符号） */
[data-theme="light"] .assessment-details-table .correct::before {
  content: "✓" !important;
  font-size: 1.2rem !important;
  font-weight: 700 !important;
  padding: 5px 10px !important;
  border-radius: 6px !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .assessment-details-table .incorrect::before {
  content: "✗" !important;
  font-size: 1.2rem !important;
  font-weight: 700 !important;
  padding: 5px 10px !important;
  border-radius: 6px !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 选项字母标记 */
[data-theme="light"] .assessment-details-table .option-a::before,
[data-theme="light"] .assessment-details-table .option-b::before,
[data-theme="light"] .assessment-details-table .option-c::before,
[data-theme="light"] .assessment-details-table .option-d::before {
  padding: 10px 15px !important;
  font-weight: 800 !important;
  font-size: 1.3rem !important;
  min-width: 40px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', '黑体', sans-serif !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 阅读文章区域 - 浅色主题 */
[data-theme="light"] .article-section {
  margin: 40px 0 !important;
  padding: 35px !important;
  border-radius: 20px !important;
  background: rgba(0, 102, 255, 0.03) !important;
  border: 3px solid var(--border-color) !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .article-section h4,
[data-theme="light"] .article-section h5 {
  font-size: 2.2rem !important;
  font-weight: 800 !important;
  color: var(--primary-color) !important;
  margin-bottom: 25px !important;
  padding-bottom: 15px !important;
  border-bottom: 3px solid var(--primary-color) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1px !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .article-content {
  margin-top: 25px !important;
  padding: 30px !important;
  background: rgba(255, 255, 255, 0.5) !important;
  border-radius: 18px !important;
  line-height: 2.2 !important;
  font-size: 1.8rem !important;
  font-weight: 500 !important;
  color: var(--text-primary) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'SimHei', sans-serif !important;
  letter-spacing: 0.8px !important;
  border: 2px solid rgba(0, 102, 255, 0.15) !important;
  box-shadow: inset 0 0 20px rgba(0, 102, 255, 0.03) !important;
  text-align: justify !important;
  text-justify: inter-word !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 中文翻译区域 - 浅色主题 */
[data-theme="light"] .translation-section {
  margin: 40px 0 !important;
  padding: 35px !important;
  border-radius: 20px !important;
  background: rgba(0, 102, 255, 0.02) !important;
  border: 3px solid rgba(0, 102, 255, 0.15) !important;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .translation-section h4,
[data-theme="light"] .translation-section h5 {
  font-size: 2.2rem !important;
  font-weight: 800 !important;
  color: var(--primary-color) !important;
  margin-bottom: 25px !important;
  padding-bottom: 15px !important;
  border-bottom: 3px solid var(--primary-color) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1px !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .translation-content {
  margin-top: 25px !important;
  padding: 30px !important;
  background: rgba(0, 102, 255, 0.03) !important;
  border-radius: 18px !important;
  line-height: 2.3 !important;
  font-size: 1.7rem !important;
  font-weight: 500 !important;
  color: var(--text-primary) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'SimHei', sans-serif !important;
  letter-spacing: 0.7px !important;
  border: 2px solid rgba(0, 102, 255, 0.1) !important;
  box-shadow: inset 0 0 20px rgba(0, 102, 255, 0.02) !important;
  text-align: justify !important;
  text-justify: inter-word !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 1.9rem !important;
  padding: 30px 40px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 22px !important;
  line-height: 2.4 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'SimHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.9) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .fill-blank {
  min-width: 250px !important;
  height: 65px !important;
  border-bottom: 5px dashed var(--primary-color) !important;
  margin: 0 25px !important;
  font-size: 2.1rem !important;
  font-weight: 800 !important;
  line-height: 65px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', '黑体', sans-serif !important;
  color: var(--text-primary) !important;
  background: transparent !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] input[type="text"][class*="fill"],
[data-theme="light"] textarea[class*="fill"] {
  max-width: 100% !important;
  height: 75px !important;
  font-size: 1.8rem !important;
  padding: 18px 30px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 18px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'SimHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] input[type="text"][class*="fill"]:focus,
[data-theme="light"] textarea[class*="fill"]:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 模态框样式 */
[data-theme="light"] #readingComprehensionModal .modal-content {
  border: 4px solid var(--primary-color) !important;
  box-shadow: 0 0 40px rgba(0, 102, 255, 0.3) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] #readingComprehensionModal #article-content {
  font-size: 22px !important;
  line-height: 2.6 !important;
  border: 4px solid rgba(0, 102, 255, 0.2) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'SimHei', sans-serif !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] #readingComprehensionModal .question-text {
  font-size: 1.9rem !important;
  border-radius: 18px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'SimHei', sans-serif !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] #readingComprehensionModal .question-option {
  font-size: 1.7rem !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 统计和学习报告修复 ==================== */
[data-theme="light"] .learning-records-table th {
  background-color: rgba(0, 102, 255, 0.1) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .learning-records-table tr:nth-child(even) {
  background-color: rgba(0, 102, 255, 0.03) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .learning-records-table tr:hover {
  background-color: rgba(0, 102, 255, 0.08) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .info-table {
  background: var(--card-bg) !important;
  border: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .info-table tr {
  border-bottom: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 过滤器和标签修复 ==================== */
[data-theme="light"] .time-filter-btn {
  background-color: rgba(0, 102, 255, 0.1) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .time-filter-btn:hover {
  background-color: rgba(0, 102, 255, 0.2) !important;
  border-color: var(--primary-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .time-filter-btn.active {
  background-color: var(--primary-color) !important;
  color: white !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .grammar-card {
  background: rgba(0, 102, 255, 0.05) !important;
  border: 1px solid var(--border-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 错误和加载状态修复 ==================== */
[data-theme="light"] .loading-spinner {
  border: 2px solid var(--border-color) !important;
  border-top: 2px solid var(--primary-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .error-message {
  background: rgba(255, 71, 87, 0.1) !important;
  border: 1px solid var(--error-color) !important;
  color: var(--error-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .success-message {
  background: rgba(0, 200, 150, 0.1) !important;
  border: 1px solid var(--success-color) !important;
  color: var(--success-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 响应式设计修复 ==================== */
@media (max-width: 768px) {
  [data-theme="light"] .theme-switcher {
    background: var(--card-bg) !important;
    border: 2px solid var(--border-color) !important;
  }

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}
  
  [data-theme="light"] .menu-item {
    border-bottom: 1px solid var(--border-color) !important;
  }

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 单词填空样式 ==================== */
[data-theme="light"] .fill-in-question {
  margin: 10px 0 !important;
  padding: 10px !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  background: rgba(255, 255, 255, 0.9) !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 报告内容样式 ==================== */


/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 动画效果优化 ==================== */
[data-theme="light"] .btn:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 25px rgba(0, 102, 255, 0.4) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .info-card:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 12px 40px rgba(0, 102, 255, 0.15) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .comprehension-option:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 4px 15px rgba(0, 102, 255, 0.2) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* 禁用选项标记 */
[data-theme="light"] .question-option::before {
  display: none !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 文本选择和高亮修复 ==================== */
[data-theme="light"] ::selection {
  background: rgba(0, 102, 255, 0.3) !important;
  color: var(--text-primary) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] ::-moz-selection {
  background: rgba(0, 102, 255, 0.3) !important;
  color: var(--text-primary) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 滚动条样式修复 ==================== */
[data-theme="light"] ::-webkit-scrollbar {
  width: 8px !important;
  background: var(--darker-bg) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] ::-webkit-scrollbar-thumb {
  background: var(--primary-color) !important;
  border-radius: 4px !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] ::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-color) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] ::-webkit-scrollbar-track {
  background: var(--dark-bg) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 占位符文本修复 ==================== */
[data-theme="light"] ::-webkit-input-placeholder {
  color: var(--text-secondary) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] :-moz-placeholder {
  color: var(--text-secondary) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] ::-moz-placeholder {
  color: var(--text-secondary) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] :-ms-input-placeholder {
  color: var(--text-secondary) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 焦点状态修复 ==================== */
[data-theme="light"] :focus {
  outline: 2px solid var(--primary-color) !important;
  outline-offset: 2px !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .btn:focus {
  outline: 2px solid var(--secondary-color) !important;
  outline-offset: 2px !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 禁用状态修复 ==================== */
[data-theme="light"] :disabled {
  opacity: 0.6 !important;
  background: var(--darker-bg) !important;
  color: var(--text-secondary) !important;
  cursor: not-allowed !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

[data-theme="light"] .btn:disabled {
  background: linear-gradient(135deg, var(--text-secondary), var(--border-color)) !important;
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 打印样式修复 ==================== */
@media print {
  [data-theme="light"] {
    background: white !important;
    color: black !important;
  }

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}
  
  [data-theme="light"] .panel,
  [data-theme="light"] .info-card {
    background: white !important;
    border: 1px solid #ccc !important;
    box-shadow: none !important;
  }

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}
  
  [data-theme="light"] .btn {
    background: #f0f0f0 !important;
    color: black !important;
    border: 1px solid #ccc !important;
  }

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 高对比度模式支持 ==================== */
@media (prefers-contrast: high) {
  [data-theme="light"] {
    --text-primary: #000000 !important;
    --text-secondary: #333333 !important;
    --border-color: #000000 !important;
  }

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}
  
  [data-theme="light"] .btn {
    border: 2px solid var(--primary-color) !important;
  }

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}
  
  [data-theme="light"] select,
  [data-theme="light"] input,
  [data-theme="light"] textarea {
    border: 2px solid var(--border-color) !important;
  }

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ==================== 减少动画支持 ==================== */
@media (prefers-reduced-motion: reduce) {
  [data-theme="light"] * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}
  
  [data-theme="light"] .btn:hover,
  [data-theme="light"] .info-card:hover,
  [data-theme="light"] .comprehension-option:hover {
    transform: none !important;
  }

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 25px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* 语法填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 35px 45px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 18px 0 !important;
}

[data-theme="light"] .fill-in-answer,
[data-theme="light"] .grammar-input {
  max-width: 700px !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] .fill-in-answer:focus,
[data-theme="light"] .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}
}

/* ===================================================
   AI语法学习题目样式 - 与AI故事记单词保持一致
   =================================================== */

/* 语法选择题选项样式 */
[data-theme="light"] .question-option {
  font-size: 1.9rem !important;
  padding: 10px 35px !important;
  margin: 22px 0 !important;
  border: 3px solid rgba(0, 102, 255, 0.2) !important;
  border-radius: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  line-height: 1.8 !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
  background: rgba(255, 255, 255, 0.95) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05) !important;
  display: flex !important;
  align-items: center !important;
  position: relative !important;
}

[data-theme="light"] .question-option:hover {
  background: rgba(0, 102, 255, 0.05) !important;
  border-color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.15) !important;
}

[data-theme="light"] .question-option.selected {
  background: rgba(0, 102, 255, 0.1) !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.15) !important;
}

/* AI故事记单词填空题样式 */
[data-theme="light"] .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 0px 30px !important;
  border: 3px solid rgba(0, 102, 255, 0.25) !important;
  border-radius: 24px !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
  letter-spacing: 0.5px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 1px 0 !important;
}

/* 语法造句的容器样式 - 移除外框，只保留输入框 */
[data-theme="light"] #grammar-questions .fill-in-sentence {
  font-size: 2.1rem !important;
  padding: 0 !important;
  border: none !important;
  border-radius: 0 !important;
  line-height: 2.6 !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  box-shadow: none !important;
  letter-spacing: 0.5px !important;
  background: transparent !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin: 1px 0 !important;
}

/* 语法造句的输入框样式 - 独立样式，不影响AI故事记单词 */
[data-theme="light"] #grammar-questions .fill-in-answer,
[data-theme="light"] #grammar-questions .grammar-input {
  max-width: 100% !important;
  height: 85px !important;
  font-size: 2.0rem !important;
  padding: 22px 35px !important;
  border: 4px solid var(--border-color) !important;
  border-radius: 20px !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1) !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
  letter-spacing: 1.2px !important;
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--text-primary) !important;
  transition: all 0.3s ease !important;
  width: 100% !important;
}

[data-theme="light"] #grammar-questions .fill-in-answer:focus,
[data-theme="light"] #grammar-questions .grammar-input:focus {
  outline: none !important;
  border-color: var(--primary-color) !important;
  box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.2), 0 8px 25px rgba(0, 102, 255, 0.3) !important;
  background: rgba(255, 255, 255, 1) !important;
  transform: translateY(-3px) !important;
}

/* 语法改错题文本框样式 */
[data-theme="light"] #grammar-questions textarea.grammar-input {
  min-height: 120px !important;
  resize: vertical !important;
  line-height: 1.8 !important;
}

/* 语法题目文本样式 */
[data-theme="light"] .question-text {
  font-size: 1.9rem !important;
  font-weight: 700 !important;
  color: var(--text-primary) !important;
  line-height: 1.8 !important;
  margin-bottom: 20px !important;
  font-family: 'Alibaba PuHuiTi 2.0', 'Alibaba PuHuiTi', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif !important;
}

/* ===================================================
   AI故事记单词题目样式 - 仿AI全脑速记简洁风格
   =================================================== */

/* 题目区块 */
.story-question-block {
  margin-top: 16px;
  padding: 0;
  background: transparent;
  border: none;
}

.story-question-block-title {
  margin: 0 0 10px 0;
  font-size: 25px;
  font-weight: 600;
  color: #1a1a2e;
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
}

/* 强制覆盖全局样式，去掉左边框和背景框 */
#reading-content h4.story-question-block-title:not(#article-title) {
  font-size: 25px !important;
  font-weight: 600 !important;
  color: #1a1a2e !important;
  background: transparent !important;
  border-left: none !important;
  border-radius: 0 !important;
  padding: 0 !important;
  margin: 0 0 10px 0 !important;
}

/* 每道题目 */
.story-question-item {
  margin-bottom: 16px;
  padding: 0 0 12px 0;
  border-bottom: 1px solid #e8e8e8;
  background: transparent;
}

.story-question-item:last-child {
  border-bottom: none;
}

/* 题干文字 */
.story-question-text {
  font-size: 20px;
  font-weight: 500;
  color: #1a1a2e;
  line-height: 1.6;
  margin-bottom: 8px;
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
}

/* 选项列表 */
.story-choice-list {
  margin: 6px 0;
  padding: 0;
}

/* 单个选项行 */
.story-choice-row {
  margin-bottom: 4px;
}

.story-choice-label {
  display: flex;
  align-items: baseline;
  padding: 4px 0;
  cursor: pointer;
  font-size: 20px;
  line-height: 1.5;
  color: #2d2d2d;
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
  transition: color 0.15s ease;
  background: transparent;
  border: none;
  border-radius: 0;
}

.story-choice-label:hover {
  color: #0066ff;
  background: transparent;
  transform: none;
  box-shadow: none;
}

.story-choice-label input[type="radio"] {
  margin-right: 8px;
  flex-shrink: 0;
}

.story-choice-text {
  font-size: 20px;
  vertical-align: baseline;
  color: inherit;
}

/* 填空题 */
.story-fill-item {
  margin-bottom: 12px;
  padding: 0 0 10px 0;
  border-bottom: 1px solid #e8e8e8;
}

.story-fill-item:last-child {
  border-bottom: none;
}

/* 填空句子 */
.story-fill-sentence {
  font-size: 20px;
  line-height: 1.7;
  color: #2d2d2d;
  margin: 0 0 6px 0;
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
}

/* 填空下划线 */
.story-fill-blank {
  display: inline-block;
  min-width: 100px;
  height: 20px;
  border-bottom: 1px solid #999;
  margin: 0 3px;
  vertical-align: baseline;
  background: transparent;
  border-radius: 0;
}

/* 填空输入框 */
.story-fill-input {
  width: 500px;
  height: 36px;
  font-size: 20px;
  padding: 4px 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  background: #fff;
  color: #1a1a2e;
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
  transition: border-color 0.15s ease;
}

.story-fill-input:focus {
  outline: none;
  border-color: #0066ff;
  box-shadow: 0 0 0 2px rgba(0, 102, 255, 0.1);
}

/* 深色主题适配 */
html:not([data-theme="light"]) #reading-content .story-question-block-title,
html:not([data-theme="light"]) #reading-content .story-question-text,
html:not([data-theme="light"]) #reading-content .story-choice-text,
html:not([data-theme="light"]) #reading-content .story-fill-sentence {
  color: #ffffff !important;
}

html:not([data-theme="light"]) #reading-content h4.story-question-block-title:not(#article-title) {
  color: #ffffff !important;
  background: transparent !important;
  border-left: none !important;
  border-radius: 0 !important;
  padding: 0 !important;
  margin: 0 0 10px 0 !important;
}

html:not([data-theme="light"]) #reading-content .story-choice-label {
  color: #ffffff !important;
}

html:not([data-theme="light"]) #reading-content .story-choice-label:hover {
  color: var(--primary-color, #00f3ff) !important;
}

#reading-content input[type="text"].story-fill-input {
  width: 500px !important;
  height: 36px !important;
  font-size: 20px !important;
}

html:not([data-theme="light"]) #reading-content input[type="text"].story-fill-input {
  background: var(--card-bg, #1a1a2e) !important;
  border-color: var(--border-color, #444) !important;
  color: #ffffff !important;
}

html:not([data-theme="light"]) .story-fill-blank {
  border-bottom-color: var(--text-secondary, #888);
}

html:not([data-theme="light"]) .story-question-item,
html:not([data-theme="light"]) .story-fill-item {
  border-bottom-color: var(--border-color, #333);
}

/* ===================================================
   AI故事记单词答题报告样式
   =================================================== */

.story-report-header {
  text-align: center;
  margin-bottom: 24px;
  padding: 24px;
  background: #ffffff;
  border-radius: 12px;
  border: 1px solid #e8e8e8;
}

.story-report-score {
  font-size: 48px;
  font-weight: 700;
  color: #e53935;
  font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
  line-height: 1;
  letter-spacing: 2px;
}

.story-report-score span {
  font-size: 20px;
  font-weight: 400;
  color: #e53935;
  opacity: 0.7;
  vertical-align: top;
  margin-left: 2px;
}

.story-report-msg {
  font-size: 20px;
  color: #e53935;
  opacity: 0.8;
  margin-top: 8px;
}

.story-report-count {
  font-size: 20px;
  color: #666666;
  margin-top: 10px;
}

.story-report-correct {
  color: #43e97b;
  font-weight: 600;
}

.story-report-btns {
  margin-bottom: 20px;
  text-align: center;
}

.story-report-btns .btn {
  margin: 0 6px;
  padding: 8px 16px;
  font-size: 20px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 6px;
  cursor: pointer;
}

.story-report-section {
  margin-bottom: 20px;
}

.story-report-section h4 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary, #1a1a2e);
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-color, #e0e0e0);
}

.story-report-content {
  font-size: 20px;
  line-height: 1.8;
  color: var(--text-primary, #1a1a2e);
}

/* 深色主题报告适配 */
html:not([data-theme="light"]) .story-report-header {
  background: var(--card-bg-secondary, rgba(255,255,255,0.05));
}

html:not([data-theme="light"]) .story-report-score,
html:not([data-theme="light"]) .story-report-score span,
html:not([data-theme="light"]) .story-report-msg {
  color: #ff6b6b;
}

html:not([data-theme="light"]) .story-report-section h4 {
  color: var(--text-primary, #e2e2e2);
  border-bottom-color: var(--border-color, #333);
}

html:not([data-theme="light"]) .story-report-content {
  color: var(--text-primary, #e2e2e2);
}