/* 基础样式重置 */
* {
    box-sizing: border-box;
}

/* CSS自定义属性 - 真实视口高度 */
:root {
    --actual-vh: 1vh;
    --safe-area-top: env(safe-area-inset-top, 0px);
    --safe-area-bottom: env(safe-area-inset-bottom, 0px);
    --safe-area-left: env(safe-area-inset-left, 0px);
    --safe-area-right: env(safe-area-inset-right, 0px);
}

/* 移动端触摸优化和精细化响应式 */
@media (hover: none) and (pointer: coarse) {
    /* 所有交互元素最小44px触摸目标 */
    button,
    .cs-question-item,
    .cs-category-btn,
    .toc-link,
    .cs-close-btn,
    .cs-search-btn,
    .scroll-indicator-close {
        min-height: 44px;
        min-width: 44px;
        touch-action: manipulation;
        cursor: pointer;
    }

    /* 问题项增强触摸体验 */
    .cs-question-item {
        padding: 16px;
        margin-bottom: 12px;
        border-radius: 12px;
        transition: all 0.2s ease;
    }

    /* 分类按钮触摸优化 */
    .cs-category-btn {
        padding: 12px 16px;
        margin: 0 8px 12px 0;
        font-size: 14px;
        border-radius: 12px;
    }

    /* 搜索输入框触摸优化 */
    .cs-search input {
        padding: 14px 16px;
        font-size: 16px; /* 防止iOS自动缩放 */
        border-radius: 12px;
    }
}

/* 高密度显示器优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .cs-help-btn,
    .question-detail-back-btn {
        border: 0.5px solid rgba(255, 255, 255, 0.1);
    }
}

/* 横屏模式优化 */
@media (orientation: landscape) and (max-height: 500px) {
    .question-detail-header {
        padding: 8px 16px;
    }

    .question-detail-title {
        font-size: 16px;
    }

    .question-detail-answer {
        padding: 12px 16px;
        font-size: 14px;
    }
}

/* 超大屏幕优化 (大平板/小笔记本) */
@media (min-width: 769px) and (max-width: 1024px) {
    .cs-modal {
        width: 85vw;
        height: 85vh;
        max-width: 900px;
        max-height: 700px;
    }

    .question-detail-modal {
        width: 85vw;
        height: 85vh;
        max-width: 900px;
        max-height: 700px;
    }
}

/* 折叠屏设备优化 */
@media (min-width: 540px) and (max-width: 720px) and (min-height: 600px) {
    .cs-modal {
        width: 95vw;
        height: 90vh;
        border-radius: 16px;
    }

    .cs-question-item {
        padding: 18px;
        font-size: 15px;
    }

    .cs-category-btn {
        padding: 10px 16px;
        font-size: 14px;
    }
}

/* 可访问性和焦点状态优化 */
@media (prefers-reduced-motion: reduce) {
    /* 减少动画敏感用户的动画 */
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .cs-help-btn,
    .question-detail-back-btn,
    .cs-category-btn.active {
        border: 2px solid currentColor;
    }

    .cs-question-item {
        border: 1px solid;
    }
}

/* 焦点可见性增强 */
.cs-help-btn:focus-visible,
.question-detail-back-btn:focus-visible,
.cs-close-btn:focus-visible,
.cs-search-btn:focus-visible,
.cs-category-btn:focus-visible,
.cs-question-item:focus-visible,
.toc-link:focus-visible {
    outline: 3px solid #4f46e5;
    outline-offset: 2px;
}

/* 超宽屏幕优化 */
@media (min-width: 1921px) {
    .cs-modal {
        max-width: 1200px;
        max-height: 900px;
    }

    .question-detail-modal {
        max-width: 1400px;
        max-height: 1000px;
    }
}

/* 小屏高度设备优化 (如iPhone SE) */
@media (max-height: 600px) and (max-width: 480px) {
    .question-detail-header {
        padding: 8px 12px;
    }

    .question-detail-answer {
        padding: 12px;
        font-size: 14px;
        line-height: 1.5;
    }

    .cs-modal {
        height: 100vh;
        border-radius: 0;
    }
}

/* Safari浏览器特定修复 */
@supports (-webkit-appearance: none) {
    /* Safari的backdrop-filter兼容性 */
    .question-detail-header,
    .question-detail-footer {
        -webkit-backdrop-filter: blur(10px);
        backdrop-filter: blur(10px);
    }

    /* Safari的安全区域兼容性 */
    .cs-widget {
        bottom: max(16px, constant(safe-area-inset-bottom));
        bottom: max(16px, env(safe-area-inset-bottom));
        right: max(16px, constant(safe-area-inset-right));
        right: max(16px, env(safe-area-inset-right));
    }

    /* Safari的transform兼容性 */
    .cs-help-btn,
    .question-detail-back-btn {
        -webkit-transform: translateZ(0);
        transform: translateZ(0);
        will-change: transform;
    }
}

/* Firefox浏览器特定修复 */
@-moz-document url-prefix() {
    /* Firefox的scrollbar修复 */
    .cs-question-list,
    .question-detail-content,
    .toc-content {
        scrollbar-width: thin;
        scrollbar-color: #667eea #f8f9fa;
    }

    /* Firefox的按钮样式修复 */
    .cs-help-btn,
    .question-detail-back-btn {
        -moz-appearance: none;
    }
}

/* WebKit浏览器优化 */
@media screen and (-webkit-min-device-pixel-ratio: 0) {
    /* Chrome/Safari的性能优化 */
    .cs-modal,
    .question-detail-modal {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    /* 滚动性能优化 */
    .cs-question-list,
    .question-detail-content {
        -webkit-overflow-scrolling: touch;
        transform: translateZ(0);
    }
}

/* 全局滚动条样式 - 增强可见性 */
body::-webkit-scrollbar {
    width: 12px;
}

body::-webkit-scrollbar-track {
    background: #f8f9fa;
    border-radius: 6px;
}

body::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 6px;
    border: 2px solid #f8f9fa;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

body::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

body::-webkit-scrollbar-thumb:active {
    background: linear-gradient(135deg, #4e5bc6 0%, #5e387e 100%);
    box-shadow: 0 2px 6px rgba(102, 126, 234, 0.2);
}

/* 火狐浏览器滚动条样式 */
* {
    scrollbar-width: thin;
    scrollbar-color: #667eea #f8f9fa;
}

/* 移动端优化 - 滚动条在触摸设备上适当缩小 */
@media (hover: none) and (pointer: coarse) {
    body::-webkit-scrollbar,
    .cs-question-list::-webkit-scrollbar,
    .cs-modal::-webkit-scrollbar,
    .cs-content::-webkit-scrollbar {
        width: 6px;
    }

    .question-detail-content::-webkit-scrollbar {
        width: 8px;
    }
}

/* 页面主要内容样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

.main-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 智能客服插件主容器 */
.cs-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* 常见问题帮助按钮 */
.cs-help-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 50px;
    padding: 12px 20px;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    position: relative;
    white-space: nowrap;
    min-height: 48px; /* 确保移动设备触摸友好 */
    animation: breathe 3s ease-in-out infinite, float 4s ease-in-out infinite;
    /* GPU加速优化 */
    transform: translateZ(0);
    will-change: transform, opacity;
    backface-visibility: hidden;
}

.cs-help-btn:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.5);
    background: linear-gradient(135deg, #7c8df1 0%, #8659b8 100%);
    animation: breathe 2s ease-in-out infinite, float 4s ease-in-out infinite;
}

.cs-help-btn:active {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.4);
}

/* 呼吸灯效果 */
@keyframes breathe {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
    }
    50% {
        box-shadow: 0 4px 20px rgba(102, 126, 234, 0.6), 0 0 0 3px rgba(102, 126, 234, 0.1);
    }
}

/* 轻微浮动效果 */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-2px);
    }
}

.cs-help-btn svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* 帮助按钮包装器 - 用于定位关闭按钮 */
.cs-help-btn-wrapper {
    position: relative;
    display: inline-block;
}

/* 帮助按钮关闭按钮 - 圆形图标样式 */
.cs-help-btn-close {
    display: none; /* 桌面端默认隐藏 */
    position: absolute;
    top: -8px;
    right: -8px;
    padding: 0;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 2px solid rgba(102, 126, 234, 0.3);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(255, 255, 255, 0.1);
    transition: all 0.2s ease;
    z-index: 10;
    /* 防止尺寸变化 */
    animation: none !important;
    transform: none !important;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cs-help-btn-close svg {
    width: 14px;
    height: 14px;
    color: #667eea;
    transition: color 0.2s ease;
}

.cs-help-btn-close:hover {
    background: rgba(255, 255, 255, 1);
    border-color: rgba(102, 126, 234, 0.6);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.25), 0 0 0 1px rgba(255, 255, 255, 0.2);
    transform: scale(1.05) !important;
}

.cs-help-btn-close:hover svg {
    color: #5568d3;
}

.cs-help-btn-close:active {
    transform: scale(0.95) !important;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

/* 介绍按钮样式 */
.cs-intro-btn {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    border-radius: 50px;
    padding: 10px 16px;
    cursor: pointer;
    box-shadow: 0 3px 15px rgba(16, 185, 129, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.025em;
    position: relative;
    white-space: nowrap;
    min-height: 40px;
    margin-bottom: 12px;
    /* GPU加速优化 */
    transform: translateZ(0);
    will-change: transform, opacity;
    backface-visibility: hidden;
}

.cs-intro-btn:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 6px 25px rgba(16, 185, 129, 0.4);
    background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
}

.cs-intro-btn:active {
    transform: translateY(-1px) scale(1.01);
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
}

.cs-intro-btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

/* 介绍信息框样式 */
.cs-info-box {
    position: absolute;
    bottom: 62px;
    right: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px) scale(0.9);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 10002;
    /* GPU加速优化 */
    will-change: transform, opacity, visibility;
    backface-visibility: hidden;
    pointer-events: none;
}

.cs-info-box.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.cs-info-content {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border: 2px solid #e2e8f0;
    border-radius: 16px;
    padding: 16px 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    position: relative;
    min-width: 280px;
    max-width: 320px;
    backdrop-filter: blur(10px);
}

.cs-info-close {
    position: absolute;
    top: 8px;
    right: 12px;
    background: none;
    border: none;
    color: #94a3b8;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    padding: 4px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s;
    line-height: 1;
}

.cs-info-close:hover {
    background: #f1f5f9;
    color: #64748b;
    transform: scale(1.1);
}

.cs-info-text {
    font-size: 11px; /* 小字体 */
    line-height: 1.4;
    color: #374151;
    margin-right: 16px;
}

.cs-info-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 12px;
}

.cs-info-item:last-child {
    margin-bottom: 0;
}

.cs-info-icon {
    font-size: 14px;
    flex-shrink: 0;
    margin-top: 1px;
}

.cs-info-details {
    flex: 1;
}

.cs-info-details strong {
    font-weight: 600;
    color: #1f2937;
    font-size: 11px; /* 小字体 */
}

.cs-info-arrow {
    position: absolute;
    bottom: -8px;
    right: 24px;
    width: 0;
    height: 0;
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid #e2e8f0;
}

.cs-info-arrow::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: -6px;
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 6px solid #ffffff;
}



/* emoji挥手动画 */
@keyframes wave {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(20deg);
    }
    75% {
        transform: rotate(-10deg);
    }
}

/* 弹窗遮罩 */
.cs-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 15000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(4px);
}

.cs-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* 弹窗主体 */
.cs-modal {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 700px;
    height: 600px;
    max-width: 90vw;
    max-height: 85vh;
    min-width: 320px;
    min-height: 400px;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.cs-overlay.show .cs-modal {
    transform: scale(1) translateY(0);
}

/* 弹窗头部 */
.cs-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.cs-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

.cs-close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 28px;
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
    line-height: 1;
}

.cs-close-btn:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* 弹窗内容区域 */
.cs-content {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* 主弹窗滚动条样式 */
.cs-modal::-webkit-scrollbar,
.cs-content::-webkit-scrollbar {
    width: 10px;
}

.cs-modal::-webkit-scrollbar-track,
.cs-content::-webkit-scrollbar-track {
    background: #f5f5f5;
    border-radius: 5px;
}

.cs-modal::-webkit-scrollbar-thumb,
.cs-content::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 5px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.cs-modal::-webkit-scrollbar-thumb:hover,
.cs-content::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

.cs-modal::-webkit-scrollbar-thumb:active,
.cs-content::-webkit-scrollbar-thumb:active {
    background: linear-gradient(135deg, #4e5bc6 0%, #5e387e 100%);
}

/* 搜索框 */
.cs-search {
    padding: 16px 20px 12px;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

.cs-search input {
    flex: 1;
    padding: 10px 16px;
    border: 2px solid #e1e8ed;
    border-radius: 20px;
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s;
}

.cs-search input:focus {
    border-color: #667eea;
}

.cs-search-btn {
    width: 40px;
    height: 40px;
    background: #667eea;
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
    flex-shrink: 0;
}

.cs-search-btn:hover {
    background: #5a6fd8;
}

.cs-search-btn svg {
    width: 20px;
    height: 20px;
}

/* 分类标签 */
.cs-categories {
    padding: 12px 20px;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    flex-shrink: 0;
}

.cs-category-btn {
    padding: 6px 12px;
    background: #f8f9fa;
    border: 1px solid #e1e8ed;
    border-radius: 16px;
    font-size: 13px;
    color: #657786;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.cs-category-btn:hover {
    background: #e8f4f8;
    border-color: #667eea;
}

.cs-category-btn.active {
    background: #667eea;
    border-color: #667eea;
    color: white;
}



/* 问题列表 */
.cs-question-list {
    flex: 1;
    overflow-y: auto;
    padding: 12px 0;
}

/* 自定义滚动条 - 增强可见性 */
.cs-question-list::-webkit-scrollbar {
    width: 10px;
}

.cs-question-list::-webkit-scrollbar-track {
    background: #f5f5f5;
    border-radius: 5px;
}

.cs-question-list::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 5px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.cs-question-list::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

.cs-question-list::-webkit-scrollbar-thumb:active {
    background: linear-gradient(135deg, #4e5bc6 0%, #5e387e 100%);
}

/* 问题项 */
.cs-question-item {
    padding: 6px 16px;
    cursor: pointer;
    transition: background-color 0.2s;
    border-left: 3px solid transparent;
}

.cs-question-item:hover {
    background-color: #f8f9fa;
    border-left-color: #667eea;
}

.cs-question-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2px;
}

.cs-question-title {
    font-size: 14px;
    font-weight: 500;
    color: #14171a;
    line-height: 1.3;
    flex: 1;
    margin-right: 12px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.cs-question-number {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    border-radius: 8px;
    width: 24px;
    height: 20px;
    font-size: 11px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3);
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
    margin-top: 1px;
}

.cs-question-number::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.2), transparent);
    border-radius: 8px 8px 0 0;
}

.cs-question-item:nth-child(1) .cs-question-number {
    background: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.cs-question-item:nth-child(2) .cs-question-number {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.cs-question-item:nth-child(3) .cs-question-number {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    box-shadow: 0 2px 8px rgba(220, 38, 38, 0.3);
}

.cs-question-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    color: #657786;
    flex-shrink: 0;
}

.cs-hot-badge {
    font-size: 12px;
    font-weight: 600;
}

.cs-question-category {
    background: #e8f4f8;
    color: #667eea;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 10px;
}



/* 响应式设计 */
@media (max-width: 768px) {
    .cs-widget {
        bottom: max(80px, env(safe-area-inset-bottom));
        right: 16px;
    }

    .cs-help-btn {
        padding: 10px 16px;
        font-size: 14px;
        min-height: 48px;
        touch-action: manipulation;
    }

    .cs-help-btn svg {
        width: 18px;
        height: 18px;
    }

    /* 移动端显示关闭按钮 - 圆形图标 */
    .cs-help-btn-close {
        display: flex !important;
        align-items: center;
        justify-content: center;
        padding: 0 !important;
        width: 24px !important;
        height: 24px !important;
        transform: none !important;
        animation: none !important;
        min-width: unset !important;
        min-height: unset !important;
    }

    /* 平板端介绍按钮 */
    .cs-intro-btn {
        padding: 8px 14px;
        font-size: 12px;
        min-height: 36px;
        margin-bottom: 10px;
    }

    .cs-intro-btn svg {
        width: 14px;
        height: 14px;
    }

    /* 平板端信息框 */
    .cs-info-box {
        bottom: 58px;
    }

    .cs-info-content {
        min-width: 240px;
        max-width: 280px;
        padding: 12px 16px;
    }

    .cs-info-text {
        font-size: 10px;
        margin-right: 12px;
    }

    .cs-info-details strong {
        font-size: 10px;
    }

    .cs-info-arrow {
        right: 20px;
    }

    .cs-overlay {
        padding: 16px;
    }

    .cs-modal {
        width: calc(100vw - 32px);
        height: calc(100vh - 64px);
        max-width: none;
        max-height: none;
        border-radius: 12px;
    }

    .cs-header {
        padding: 14px 16px;
    }

    .cs-header h3 {
        font-size: 16px;
    }

    .cs-search {
        padding: 14px 16px 10px;
        gap: 8px;
    }

    .cs-search input {
        padding: 10px 14px;
        font-size: 14px;
    }

    .cs-search-btn {
        width: 36px;
        height: 36px;
    }

    .cs-categories {
        padding: 10px 16px;
        overflow-x: auto;
        flex-wrap: nowrap;
        gap: 6px;
    }

    .cs-question-item {
        padding: 16px;
        margin-bottom: 8px;
        border-radius: 12px;
    }

    .cs-question-title {
        font-size: 14px;
        line-height: 1.4;
        margin-bottom: 4px;
    }

    .cs-category-btn {
        padding: 8px 12px;
        font-size: 13px;
        margin: 0 6px 8px 0;
    }


}

@media (max-width: 480px) {
    .cs-widget {
        bottom: max(80px, env(safe-area-inset-bottom));
        right: 12px;
    }

    .cs-help-btn {
        padding: 10px 14px;
        font-size: 13px;
        min-height: 44px;
        border-radius: 22px;
    }

    .cs-help-btn svg {
        width: 16px;
        height: 16px;
    }

    /* 移动端关闭按钮 - 圆形图标 */
    .cs-help-btn-close {
        display: flex !important;
        align-items: center;
        justify-content: center;
        padding: 0 !important;
        width: 22px !important;
        height: 22px !important;
        transform: none !important;
        animation: none !important;
    }

    .cs-help-btn-close svg {
        width: 12px !important;
        height: 12px !important;
    }

    /* 移动端介绍按钮 */
    .cs-intro-btn {
        padding: 8px 12px;
        font-size: 11px;
        min-height: 32px;
        margin-bottom: 8px;
        border-radius: 20px;
    }

    .cs-intro-btn svg {
        width: 12px;
        height: 12px;
    }

    /* 移动端信息框 */
    .cs-info-box {
        bottom: 50px;
        right: 10px;
        left: auto;
    }

    .cs-info-content {
        min-width: 200px;
        max-width: 260px;
        padding: 10px 14px;
        font-size: 10px;
    }

    .cs-info-text {
        font-size: 9px;
        margin-right: 10px;
    }

    .cs-info-details strong {
        font-size: 9px;
    }

    .cs-info-arrow {
        right: 30px;
    }

    .cs-info-close {
        width: 20px;
        height: 20px;
        font-size: 16px;
    }

    .cs-modal {
        width: 100vw;
        height: 100vh;
        max-width: none;
        max-height: none;
        border-radius: 0;
    }

    .cs-overlay {
        padding: 0;
    }


    /* 超小屏幕问题列表优化 */
    .cs-question-item {
        padding: 4px 10px;
    }

    .cs-question-title {
        font-size: 12px;
        line-height: 1.2;
    }

    .cs-question-meta {
        font-size: 10px;
        gap: 6px;
    }

    .cs-hot-badge {
        font-size: 11px;
    }

    .cs-question-category {
        font-size: 9px;
        padding: 1px 6px;
    }

}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 暗色主题支持 */
@media (prefers-color-scheme: dark) {
    /* 主弹窗暗色模式 */
    .cs-modal {
        background: #1a1a1a;
        color: #e2e8f0;
        border: 1px solid #374151;
    }

    .cs-header {
        background: #111827;
        border-bottom-color: #374151;
        color: #f9fafb;
    }

    .cs-header h3 {
        color: #f9fafb;
    }

    .cs-close-btn {
        color: #9ca3af;
        background: rgba(75, 85, 99, 0.3);
    }

    .cs-close-btn:hover {
        color: #f9fafb;
        background: rgba(75, 85, 99, 0.5);
    }

    /* 搜索框暗色模式 */
    .cs-search {
        background: #111827;
        border-bottom-color: #374151;
    }

    .cs-search input {
        background: #374151;
        border-color: #4b5563;
        color: #f9fafb;
    }

    .cs-search input:focus {
        border-color: #8b5cf6;
        box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
    }

    .cs-search input::placeholder {
        color: #9ca3af;
    }

    .cs-search-btn {
        background: #4c1d95;
        color: #e2e8f0;
    }

    .cs-search-btn:hover {
        background: #5b21b6;
    }

    /* 分类按钮暗色模式 */
    .cs-categories {
        background: #111827;
        border-bottom-color: #374151;
    }

    .cs-category-btn {
        background: #374151;
        color: #d1d5db;
        border-color: #4b5563;
    }

    .cs-category-btn:hover {
        background: #4b5563;
        color: #f9fafb;
    }

    .cs-category-btn.active {
        background: linear-gradient(135deg, #4c1d95 0%, #581c87 100%);
        color: #e2e8f0;
        border-color: #6366f1;
    }

    /* 问题列表暗色模式 */
    .cs-question-list {
        background: #1a1a1a;
    }

    .cs-question-item {
        background: #111827;
        border-color: #374151;
        color: #e2e8f0;
    }

    .cs-question-item:hover {
        background: #1f2937;
        border-color: #4b5563;
    }

    .cs-question-title {
        color: #f9fafb;
    }

    .cs-question-meta {
        color: #9ca3af;
    }

    .cs-question-category {
        background: rgba(99, 102, 241, 0.2);
        color: #a78bfa;
    }

    /* 帮助按钮暗色模式 */
    .cs-help-btn {
        background: linear-gradient(135deg, #4c1d95 0%, #581c87 100%);
        color: #e2e8f0;
        box-shadow: 0 4px 20px rgba(76, 29, 149, 0.3);
    }

    .cs-help-btn:hover {
        background: linear-gradient(135deg, #5b21b6 0%, #6b21a8 100%);
        box-shadow: 0 6px 25px rgba(76, 29, 149, 0.4);
    }

    /* 介绍按钮暗色模式 */
    .cs-intro-btn {
        background: linear-gradient(135deg, #047857 0%, #065f46 100%);
        box-shadow: 0 3px 15px rgba(4, 120, 87, 0.3);
    }

    .cs-intro-btn:hover {
        background: linear-gradient(135deg, #059669 0%, #047857 100%);
        box-shadow: 0 6px 25px rgba(4, 120, 87, 0.4);
    }

    /* 信息框暗色模式 */
    .cs-info-content {
        background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
        border-color: #374151;
        color: #e5e7eb;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    }

    .cs-info-text {
        color: #d1d5db;
    }

    .cs-info-details strong {
        color: #f9fafb;
    }

    .cs-info-close {
        color: #9ca3af;
        background: rgba(75, 85, 99, 0.3);
    }

    .cs-info-close:hover {
        color: #f9fafb;
        background: rgba(75, 85, 99, 0.5);
    }

    .cs-info-arrow {
        border-top-color: #374151;
    }

    .cs-info-arrow::after {
        border-top-color: #1f2937;
    }


    /* 暗色主题滚动条样式 */
    body::-webkit-scrollbar-track,
    .cs-question-list::-webkit-scrollbar-track,
    .cs-modal::-webkit-scrollbar-track,
    .cs-content::-webkit-scrollbar-track,
    .question-detail-content::-webkit-scrollbar-track {
        background: #2a2a2a;
    }

    body::-webkit-scrollbar-thumb,
    .cs-question-list::-webkit-scrollbar-thumb,
    .cs-modal::-webkit-scrollbar-thumb,
    .cs-content::-webkit-scrollbar-thumb,
    .question-detail-content::-webkit-scrollbar-thumb {
        background: linear-gradient(135deg, #7c3aed 0%, #8b5cf6 100%);
        border-color: #2a2a2a;
        box-shadow: 0 2px 8px rgba(124, 58, 237, 0.4);
    }

    body::-webkit-scrollbar-thumb:hover,
    .cs-question-list::-webkit-scrollbar-thumb:hover,
    .cs-modal::-webkit-scrollbar-thumb:hover,
    .cs-content::-webkit-scrollbar-thumb:hover,
    .question-detail-content::-webkit-scrollbar-thumb:hover {
        background: linear-gradient(135deg, #8b5cf6 0%, #a78bfa 100%);
        box-shadow: 0 4px 12px rgba(124, 58, 237, 0.5);
    }

    /* 火狐浏览器暗色主题滚动条 */
    * {
        scrollbar-color: #7c3aed #2a2a2a;
    }

    .cs-category-btn {
        background: #2a2a2a;
        border-color: #444;
        color: #ccc;
    }

    .cs-category-btn.active {
        background: #667eea;
        color: white;
    }
}

/* 空状态样式 */
.cs-empty-state {
    padding: 40px 20px;
    text-align: center;
    color: #657786;
}

.cs-empty-state svg {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
}

.cs-empty-state p {
    margin: 0;
    font-size: 14px;
}

.cs-empty-state p:first-of-type {
    font-weight: 500;
    margin-bottom: 8px;
}

.cs-empty-state p:last-of-type {
    font-size: 12px;
    opacity: 0.8;
}

/* 问题详情弹窗样式 */
.question-detail-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 20000; /* 高于主弹窗 */
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 0;
    box-sizing: border-box;
}

.question-detail-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* 详情弹窗主体 - 默认桌面端样式 */
.question-detail-modal {
    background: white;
    width: 90vw;
    height: 90vh;
    max-width: 1000px;
    max-height: 800px;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    transform: scale(0.9) translateY(50px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.question-detail-overlay.show .question-detail-modal {
    transform: scale(1) translateY(0);
}

/* 详情弹窗头部 */
.question-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid #e5e7eb;
    flex-shrink: 0;
}

.question-detail-title {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
    flex: 1;
}

.question-detail-close {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
    margin-left: 12px;
}

.question-detail-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

.question-detail-close svg {
    width: 20px;
    height: 20px;
}

/* 元数据区域 */
.question-detail-meta {
    display: none;
}

.question-detail-category-tag {
    background: #e8f4f8;
    color: #667eea;
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 13px;
    font-weight: 500;
}

.question-detail-hot-badge {
    font-size: 16px;
}

/* 详情内容区域 */
.question-detail-content {
    height: 100vh;
    background: #fafbfc;
    padding: 0;
    overflow-y: auto;
}

.question-detail-answer {
    background: white;
    margin: 30px auto;
    padding: 50px 60px;
    border-radius: 12px;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    max-width: 1200px;
    font-size: 14px;
    line-height: 1.5;
    color: #2c3e50;
}

/* Markdown 内容样式 */
/* H1 标题 - 主要标题样式 */
.question-detail-answer h1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 20px;
    font-weight: 700;
    padding: 16px 24px;
    border-radius: 12px;
    margin: 1.5em 0 1em 0;
    border-left: 6px solid #4f46e5;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.2);
    position: relative;
    line-height: 1.4;
}

.question-detail-answer h1::before {
    content: "📋";
    margin-right: 12px;
    font-size: 18px;
}

/* H2 标题 - 次要标题样式 */
.question-detail-answer h2 {
    background: linear-gradient(to right, #f8f9fa 0%, #e9ecef 100%);
    color: #2c3e50;
    font-size: 18px;
    font-weight: 600;
    padding: 12px 20px;
    border-radius: 8px;
    margin: 1.3em 0 0.8em 0;
    border-left: 4px solid #667eea;
    border-bottom: 2px solid #e9ecef;
    position: relative;
    line-height: 1.3;
}

.question-detail-answer h2::before {
    content: "🔹";
    margin-right: 10px;
    font-size: 16px;
    color: #667eea;
}

/* H3 标题 - 三级标题样式 */
.question-detail-answer h3 {
    color: #2c3e50;
    font-size: 16px;
    font-weight: 600;
    margin: 1.2em 0 0.6em 0;
    padding: 8px 0;
    border-left: 4px solid #fbbf24;
    padding-left: 16px;
    background: linear-gradient(to right, #fef3c7 0%, transparent 100%);
    border-radius: 0 8px 8px 0;
    line-height: 1.3;
}

.question-detail-answer h3::before {
    content: "▸";
    margin-right: 8px;
    color: #fbbf24;
    font-weight: bold;
}

/* H4-H6 标题 - 简化样式 */
.question-detail-answer h4 {
    color: #374151;
    font-size: 15px;
    font-weight: 600;
    margin: 1em 0 0.5em 0;
    padding-left: 12px;
    border-left: 3px solid #10b981;
    line-height: 1.3;
}

.question-detail-answer h5 {
    color: #4b5563;
    font-size: 14px;
    font-weight: 600;
    margin: 0.8em 0 0.4em 0;
    line-height: 1.3;
}

.question-detail-answer h6 {
    color: #6b7280;
    font-size: 13px;
    font-weight: 600;
    margin: 0.6em 0 0.3em 0;
    line-height: 1.3;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.question-detail-answer h1:first-child {
    margin-top: 0;
}

.question-detail-answer h2:first-child {
    margin-top: 0;
}

.question-detail-answer h3:first-child {
    margin-top: 0;
}

.question-detail-answer p {
    margin: 0 0 0.8em 0;
    line-height: 1.5;
}

/* 强调文本样式 */
.question-detail-answer strong {
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
}

.question-detail-answer strong::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 1px;
    opacity: 0.3;
}

.question-detail-answer em {
    font-style: italic;
    color: #7c3aed;
    position: relative;
    padding: 0 2px;
}

.question-detail-answer em::before {
    content: """;
    color: #c084fc;
    font-size: 1.2em;
    margin-right: 2px;
}

.question-detail-answer em::after {
    content: """;
    color: #c084fc;
    font-size: 1.2em;
    margin-left: 2px;
}

/* 列表样式美化 */
.question-detail-answer ul,
.question-detail-answer ol {
    margin: 1.2em 0;
    padding-left: 0;
}

.question-detail-answer li {
    margin-bottom: 0.6em;
    line-height: 1.5;
    position: relative;
    padding-left: 2em;
    transition: all 0.2s ease;
}

.question-detail-answer li:hover {
    background: rgba(102, 126, 234, 0.05);
    border-radius: 6px;
    padding-right: 1em;
    margin-left: -0.5em;
    padding-left: 2.5em;
}

/* 无序列表样式 */
.question-detail-answer ul li {
    list-style: none;
}

.question-detail-answer ul li::before {
    content: "•";
    position: absolute;
    left: 0.5em;
    color: #667eea;
    font-weight: bold;
    font-size: 1.2em;
}

/* 有序列表样式 */
.question-detail-answer ol {
    counter-reset: list-counter;
}

.question-detail-answer ol li {
    list-style: none;
    counter-increment: list-counter;
}

.question-detail-answer ol li::before {
    content: counter(list-counter) ".";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: 600;
}

/* 嵌套列表样式 */
.question-detail-answer ul ul,
.question-detail-answer ol ol,
.question-detail-answer ul ol,
.question-detail-answer ol ul {
    margin: 0.5em 0;
    padding-left: 1.5em;
}

.question-detail-answer ul ul li::before {
    content: "◦";
    color: #a0aec0;
    font-size: 1em;
}

/* 引用块样式 */
.question-detail-answer blockquote {
    margin: 1.5em 0;
    padding: 20px 24px;
    background: linear-gradient(135deg, #f8f9ff 0%, #f1f5f9 100%);
    border-left: 6px solid #667eea;
    border-radius: 0 12px 12px 0;
    position: relative;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.1);
}

.question-detail-answer blockquote::before {
    content: "💡";
    position: absolute;
    top: -8px;
    left: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.question-detail-answer blockquote::after {
    content: """;
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 48px;
    color: #e2e8f0;
    font-family: Georgia, serif;
    line-height: 1;
    z-index: 0;
}

.question-detail-answer blockquote p {
    margin: 0;
    color: #4a5568;
    font-style: italic;
    font-weight: 500;
    position: relative;
    z-index: 1;
    line-height: 1.6;
}

.question-detail-answer blockquote p:first-child {
    margin-top: 0;
}

.question-detail-answer blockquote p:last-child {
    margin-bottom: 0;
}

/* 行内代码样式 */
.question-detail-answer code {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    color: #d97706;
    padding: 3px 8px;
    border-radius: 6px;
    font-family: 'Fira Code', 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 13px;
    font-weight: 600;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: relative;
}

.question-detail-answer code::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #d97706, transparent);
}

/* 代码块样式 */
.question-detail-answer pre {
    background: #2d3748;
    color: #e2e8f0;
    padding: 16px 20px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5em 0;
    border: 1px solid #4a5568;
    position: relative;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

.question-detail-answer pre code {
    background: none;
    color: inherit;
    padding: 0;
    font-size: 13px;
    font-family: 'Fira Code', 'Consolas', 'Monaco', 'Courier New', monospace;
    line-height: 1.6;
    border: none;
    box-shadow: none;
}

.question-detail-answer pre code::before {
    display: none;
}

/* 链接样式 */
.question-detail-answer a {
    color: #667eea;
    text-decoration: none;
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 500;
    transition: all 0.3s ease;
}

.question-detail-answer a::before {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: width 0.3s ease;
}

.question-detail-answer a:hover::before {
    width: 100%;
}

.question-detail-answer a:hover {
    transform: translateY(-1px);
}

/* 外部链接图标 */
.question-detail-answer a[href^="http"]::after {
    content: "🔗";
    font-size: 0.8em;
    margin-left: 4px;
    opacity: 0.7;
}

/* 图片样式 */
.question-detail-answer img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    margin: 1.5em auto 0.5em auto;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    display: block;
}

/* 图片提示文字样式 */
.question-detail-answer .image-hint {
    font-size: 0.8em;
    color: #999;
    text-align: center;
    margin: 0.5em auto 1.5em auto;
    font-style: italic;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

/* 响应式图片宽度 - 覆盖内联样式 */
/* 桌面端：根据图片宽高比优化显示 */
@media (min-width: 769px) {
    /* 默认图片样式 */
    .question-detail-answer img {
        width: 35% !important;
        max-width: 420px !important;
        min-width: 250px !important;
        max-height: 350px !important;
        object-fit: contain;
    }

    /* 横图（宽>高）：宽度更大，高度适中 */
    .question-detail-answer img.landscape-img {
        width: 50% !important;
        max-width: 600px !important;
        max-height: 280px !important;
        min-height: 150px !important;
    }

    /* 竖图（高>宽）：宽度较小，严格限制高度 */
    .question-detail-answer img.portrait-img {
        width: 25% !important;
        max-width: 300px !important;
        max-height: 200px !important;
        min-width: 180px !important;
    }

    /* 方形图片：中等尺寸 */
    .question-detail-answer img.square-img {
        width: 30% !important;
        max-width: 350px !important;
        max-height: 350px !important;
        min-width: 200px !important;
    }
}

/* 平板端：较大显示 */
@media (min-width: 481px) and (max-width: 768px) {
    .question-detail-answer img {
        width: 70% !important;
        max-width: 500px !important;
        min-width: 250px !important;
    }
}

/* 移动端：接近全宽显示 */
@media (max-width: 480px) {
    .question-detail-answer img {
        width: 90% !important;
        max-width: none !important;
        min-width: 200px !important;
    }

    /* 移动端禁用悬停效果 */
    .question-detail-answer img:hover {
        transform: none;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    }
}

/* 触摸设备优化 - 禁用悬停效果 */
@media (hover: none) and (pointer: coarse) {
    .question-detail-answer img:hover {
        transform: none !important;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1) !important;
    }

    /* 为触摸设备添加轻微的点击反馈 */
    .question-detail-answer img:active {
        transform: scale(0.98);
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        transition: transform 0.1s ease;
    }
}

.question-detail-answer img:hover {
    transform: scale(1.02);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* 图片加载占位符 */
.question-detail-answer img[src=""] {
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    border: 2px dashed #cbd5e0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    position: relative;
}

.question-detail-answer img[src=""]::before {
    content: "🖼️ 图片加载中...";
    color: #a0aec0;
    font-size: 14px;
    font-weight: 500;
}

/* 表格样式美化 */
.question-detail-answer table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 2em 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    background: white;
}

.question-detail-answer th,
.question-detail-answer td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid #f1f5f9;
    transition: all 0.2s ease;
}

.question-detail-answer th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    font-weight: 700;
    color: white;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
}

.question-detail-answer th::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
}

.question-detail-answer th:first-child {
    border-top-left-radius: 12px;
}

.question-detail-answer th:last-child {
    border-top-right-radius: 12px;
}

.question-detail-answer tbody tr:hover {
    background: linear-gradient(135deg, #f8f9ff 0%, #f1f5f9 100%);
    transform: scale(1.01);
}

.question-detail-answer tbody tr:nth-child(even) {
    background: #fafbff;
}

.question-detail-answer tbody tr:nth-child(even):hover {
    background: linear-gradient(135deg, #f8f9ff 0%, #f1f5f9 100%);
}

.question-detail-answer td {
    color: #4a5568;
    font-size: 14px;
    border-left: 3px solid transparent;
}

.question-detail-answer tbody tr:hover td {
    border-left-color: #667eea;
}

.question-detail-answer tbody tr:last-child td {
    border-bottom: none;
}

.question-detail-answer tbody tr:last-child td:first-child {
    border-bottom-left-radius: 12px;
}

.question-detail-answer tbody tr:last-child td:last-child {
    border-bottom-right-radius: 12px;
}

/* 自定义markdown格式样式 */

/* 【】格式 - 高亮强调样式 */
.question-detail-answer .custom-highlight {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4px 12px;
    border-radius: 8px;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    display: inline-block;
    margin: 0 4px;
    position: relative;
    transition: all 0.3s ease;
}

.question-detail-answer .custom-highlight::before {
    content: "⭐";
    position: absolute;
    top: -6px;
    left: -6px;
    font-size: 12px;
    background: #fbbf24;
    border-radius: 50%;
    width: 16px;
    height: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(251, 191, 36, 0.4);
}

.question-detail-answer .custom-highlight:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* 『』格式 - 引用样式 */
.question-detail-answer .custom-quote {
    background: linear-gradient(135deg, #f8f9ff 0%, #e0e7ff 100%);
    color: #4f46e5;
    padding: 6px 12px;
    border-radius: 8px;
    border: 2px solid #c7d2fe;
    font-weight: 600;
    display: inline-block;
    margin: 0 4px;
    position: relative;
    transition: all 0.3s ease;
    font-style: italic;
}

.question-detail-answer .custom-quote::before {
    content: "💬";
    position: absolute;
    top: -8px;
    left: 8px;
    font-size: 14px;
    background: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #c7d2fe;
}

.question-detail-answer .custom-quote:hover {
    background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
    transform: scale(1.05);
}

/* 「」格式 - 警告提示样式 */
.question-detail-answer .custom-bracket {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    padding: 6px 12px;
    border-radius: 8px;
    border: 2px solid #f59e0b;
    font-weight: 600;
    display: inline-block;
    margin: 0 4px;
    position: relative;
    transition: all 0.3s ease;
}

.question-detail-answer .custom-bracket::before {
    content: "⚠️";
    position: absolute;
    top: -8px;
    right: 8px;
    font-size: 14px;
    background: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #f59e0b;
}

.question-detail-answer .custom-bracket:hover {
    background: linear-gradient(135deg, #fde68a 0%, #fbbf24 100%);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

/* 分割线美化 */
.question-detail-answer hr {
    border: none;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
    margin: 2em 0;
    position: relative;
    overflow: hidden;
}

.question-detail-answer hr::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* 装饰性分割线变体 */
.question-detail-answer hr.decorative {
    height: 1px;
    background: transparent;
    position: relative;
    margin: 3em 0;
}

.question-detail-answer hr.decorative::before {
    content: "✦ ✦ ✦";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 0 20px;
    color: #667eea;
    font-size: 16px;
    letter-spacing: 8px;
}

.question-detail-answer hr.decorative::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, #e2e8f0, transparent);
    z-index: -1;
}

/* 段落间的额外装饰 */
.question-detail-answer p + p {
    position: relative;
}

.question-detail-answer p:not(:last-child) {
    margin-bottom: 1.2em;
}

/* 选择文本美化 */
.question-detail-answer ::selection {
    background: rgba(102, 126, 234, 0.3);
    color: #1a202c;
}

.question-detail-answer ::-moz-selection {
    background: rgba(102, 126, 234, 0.3);
    color: #1a202c;
}

/* 平滑滚动 */
.question-detail-content {
    scroll-behavior: smooth;
}

/* 焦点可见性改进 */
.question-detail-answer a:focus,
.question-detail-answer code:focus,
.question-detail-answer .custom-highlight:focus,
.question-detail-answer .custom-quote:focus,
.question-detail-answer .custom-bracket:focus {
    outline: 3px solid rgba(102, 126, 234, 0.5);
    outline-offset: 2px;
    border-radius: 6px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .question-detail-answer .custom-highlight,
    .question-detail-answer .custom-quote,
    .question-detail-answer .custom-bracket {
        padding: 3px 8px;
        margin: 0 2px;
        font-size: 13px;
    }

    .question-detail-answer .custom-highlight::before,
    .question-detail-answer .custom-quote::before,
    .question-detail-answer .custom-bracket::before {
        width: 16px;
        height: 16px;
        font-size: 10px;
    }

    .question-detail-answer hr.decorative::before {
        font-size: 14px;
        letter-spacing: 6px;
        padding: 0 15px;
    }

    .question-detail-answer li {
        padding-left: 1.5em;
    }

    .question-detail-answer ul li::before,
    .question-detail-answer ol li::before {
        left: 0.3em;
    }
}

/* 主模态框底部 - 移动端返回按钮（桌面端隐藏） */
.cs-footer {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 10001;
    background: transparent;
    border: none;
    padding: 0;
    display: none; /* 桌面端默认隐藏 */
}

.cs-modal-back-btn {
    background: #667eea;
    color: white;
    border: none;
    border-radius: 50px;
    padding: 12px 20px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    letter-spacing: 0.3px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.cs-modal-back-btn:hover {
    background: #5a6fd8;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.5);
}

.cs-modal-back-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
}

.cs-modal-back-btn svg {
    width: 16px;
    height: 16px;
}

/* 详情弹窗底部 - 统一为浮动按钮 */
.question-detail-footer {
    position: fixed;
    bottom: 30px;
    left: 30px;
    z-index: 21000;
    background: transparent;
    border: none;
    padding: 0;
}

.question-detail-back-btn {
    background: #667eea;
    color: white;
    border: none;
    border-radius: 50px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    min-width: auto;
    white-space: nowrap;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.question-detail-back-btn:hover {
    background: #5a6fd8;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.5);
}

.question-detail-back-btn svg {
    width: 16px;
    height: 16px;
}

/* 滚动提示指示器 - 统一样式 */
.scroll-indicator {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: rgba(102, 126, 234, 0.9);
    color: white;
    padding: 12px 16px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
    backdrop-filter: blur(10px);
    z-index: 20500;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    pointer-events: none;
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 260px;
    text-align: left;
}

.scroll-indicator-text {
    flex: 1;
    min-width: 0;
}

.scroll-indicator-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.scroll-indicator-close:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.scroll-indicator.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.scroll-indicator.animate {
    animation: scrollPulse 2s ease-in-out infinite;
}

.scroll-indicator.hidden {
    opacity: 0 !important;
    transform: translateY(20px) !important;
    pointer-events: none !important;
}

@keyframes scrollPulse {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* 问题详情内容滚动条样式 - 统一优化 */
.question-detail-content::-webkit-scrollbar {
    width: 12px;
}

.question-detail-content::-webkit-scrollbar-track {
    background: #f8f9fa;
    border-radius: 6px;
    margin: 4px;
}

.question-detail-content::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 6px;
    border: 2px solid #f8f9fa;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.question-detail-content::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.question-detail-content::-webkit-scrollbar-thumb:active {
    background: linear-gradient(135deg, #4e5bc6 0%, #5e387e 100%);
    box-shadow: 0 2px 6px rgba(102, 126, 234, 0.2);
}

/* 移动端适配 - 平板和手机 */
@media (max-width: 768px) {
    /* 主模态框底部 - 移动端显示返回按钮 */
    .cs-footer {
        display: block;
        position: fixed;
        bottom: calc(20px + var(--safe-area-bottom));
        right: calc(20px + var(--safe-area-right));
        z-index: 10001;
    }

    .cs-modal-back-btn {
        width: auto;
        min-width: 56px;
        height: 56px;
        padding: 0 16px;
        border-radius: 28px;
        font-size: 14px;
        box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
        position: relative;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        white-space: nowrap;
    }

    .cs-modal-back-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 12px 32px rgba(102, 126, 234, 0.5);
    }

    .cs-modal-back-btn:active {
        transform: translateY(0);
        box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
    }

    .cs-modal-back-btn svg {
        width: 24px;
        height: 24px;
        stroke-width: 2.5;
    }

    /* 详情弹窗移动端全屏显示 - 使用真实视口高度 */
    .question-detail-modal {
        width: 100vw;
        height: calc(var(--actual-vh, 1vh) * 100);
        max-width: none;
        max-height: none;
        border-radius: 0;
        transform: translateY(100%);
        padding-top: var(--safe-area-top);
        padding-bottom: var(--safe-area-bottom);
        padding-left: var(--safe-area-left);
        padding-right: var(--safe-area-right);
    }

    .question-detail-overlay.show .question-detail-modal {
        transform: translateY(0);
    }

    /* 头部在移动端显示但简化 */
    .question-detail-header {
        padding: 16px 20px;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        border-bottom: 1px solid #e5e7eb;
        position: sticky;
        top: 0;
        z-index: 100;
    }

    .question-detail-title {
        font-size: 18px;
    }

    .question-detail-answer {
        margin: 0;
        padding: 20px;
        font-size: 14px;
        line-height: 1.6;
    }

    .question-detail-footer {
        position: fixed;
        bottom: calc(20px + var(--safe-area-bottom));
        right: calc(20px + var(--safe-area-right));
        z-index: 101;
        background: transparent;
        backdrop-filter: none;
        padding: 0;
        border: none;
        width: auto;
        left: auto;
    }

    .question-detail-back-btn {
        width: auto;
        min-width: 56px;
        height: 56px;
        padding: 0 16px;
        border-radius: 28px;
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        color: white;
        border: none;
        box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
        font-size: 14px;
        font-weight: 600;
        position: relative;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        white-space: nowrap;
    }

    .question-detail-back-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 12px 32px rgba(102, 126, 234, 0.5);
    }

    .question-detail-back-btn:active {
        transform: translateY(0);
        box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
    }

    .question-detail-back-btn svg {
        width: 24px;
        height: 24px;
        stroke-width: 2.5;
    }


    .scroll-indicator {
        bottom: calc(96px + var(--safe-area-bottom));
        right: calc(20px + var(--safe-area-right));
        padding: 10px 12px;
        font-size: 13px;
        max-width: 220px;
        gap: 10px;
    }

    .scroll-indicator-close {
        width: 22px;
        height: 22px;
        font-size: 14px;
    }

    .question-detail-content {
        padding-bottom: 80px;
    }

    .question-detail-content::-webkit-scrollbar {
        width: 8px;
    }
}

/* 超小屏幕设备优化 - 手机 */
@media (max-width: 480px) {
    /* 主模态框返回按钮 - 超小屏幕调整 */
    .cs-footer {
        bottom: calc(15px + var(--safe-area-bottom));
        right: calc(15px + var(--safe-area-right));
    }

    .cs-modal-back-btn {
        width: auto;
        min-width: 52px;
        height: 52px;
        padding: 0 14px;
        border-radius: 26px;
        gap: 6px;
        font-size: 13px;
    }

    .cs-modal-back-btn svg {
        width: 22px;
        height: 22px;
    }

    .question-detail-header {
        padding: 12px 16px;
    }

    .question-detail-title {
        font-size: 16px;
    }

    .question-detail-answer {
        margin: 0;
        padding: 16px;
        font-size: 14px;
        line-height: 1.6;
    }

    .question-detail-footer {
        bottom: calc(15px + var(--safe-area-bottom));
        right: calc(15px + var(--safe-area-right));
    }

    .question-detail-back-btn {
        width: auto;
        min-width: 52px;
        height: 52px;
        padding: 0 14px;
        border-radius: 26px;
        gap: 6px;
        font-size: 13px;
    }

    .question-detail-back-btn svg {
        width: 22px;
        height: 22px;
    }

    .scroll-indicator {
        bottom: calc(82px + var(--safe-area-bottom));
        right: calc(15px + var(--safe-area-right));
        padding: 8px 10px;
        font-size: 12px;
        max-width: 180px;
        gap: 8px;
    }

    .scroll-indicator-close {
        width: 20px;
        height: 20px;
        font-size: 12px;
    }

    .question-detail-content {
        padding-bottom: 20px;
    }
}

/* =================== 目录组件样式 =================== */

.table-of-contents {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    margin-bottom: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: all 0.3s ease;
}

.table-of-contents:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.toc-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toc-header h4 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.toc-toggle {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.toc-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.toc-content {
    padding: 16px;
    max-height: 500px;
    overflow-y: auto;
}

.toc-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.toc-item {
    margin: 0;
    padding: 0;
}

.toc-link {
    display: block;
    padding: 8px 12px;
    color: #4a5568;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
    font-size: 14px;
    line-height: 1.4;
}

.toc-link:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    border-left-color: #667eea;
    transform: translateX(4px);
}

.toc-link.active {
    background: rgba(102, 126, 234, 0.15);
    color: #667eea;
    border-left-color: #667eea;
    font-weight: 600;
}

/* 目录层级缩进 */
.toc-level-1 .toc-link {
    padding-left: 12px;
    font-weight: 600;
    font-size: 15px;
}

.toc-level-2 .toc-link {
    padding-left: 24px;
    font-size: 14px;
}

.toc-level-3 .toc-link {
    padding-left: 36px;
    font-size: 13px;
    color: #718096;
}

/* 目录滚动条样式 */
.toc-content::-webkit-scrollbar {
    width: 6px;
}

.toc-content::-webkit-scrollbar-track {
    background: #f1f5f9;
    border-radius: 3px;
}

.toc-content::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 3px;
    transition: background 0.2s ease;
}

.toc-content::-webkit-scrollbar-thumb:hover {
    background: #a0aec0;
}

/* 移动端目录优化 */
@media (max-width: 768px) {
    .table-of-contents {
        margin-bottom: 20px;
        border-radius: 8px;
    }

    .toc-header {
        padding: 10px 14px;
    }

    .toc-header h4 {
        font-size: 15px;
    }

    .toc-content {
        padding: 12px;
        max-height: 350px;
    }

    .toc-link {
        padding: 6px 10px;
        font-size: 13px;
    }

    .toc-level-1 .toc-link {
        padding-left: 10px;
        font-size: 14px;
    }

    .toc-level-2 .toc-link {
        padding-left: 20px;
        font-size: 13px;
    }

    .toc-level-3 .toc-link {
        padding-left: 30px;
        font-size: 12px;
    }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
    .table-of-contents {
        margin-bottom: 16px;
        border-radius: 6px;
    }

    .toc-header {
        padding: 8px 12px;
    }

    .toc-header h4 {
        font-size: 14px;
    }

    .toc-toggle {
        padding: 3px 8px;
        font-size: 11px;
    }

    .toc-content {
        padding: 10px;
        max-height: 250px;
    }

    .toc-link {
        padding: 5px 8px;
        font-size: 12px;
    }

    .toc-level-1 .toc-link {
        padding-left: 8px;
        font-size: 13px;
    }

    .toc-level-2 .toc-link {
        padding-left: 16px;
        font-size: 12px;
    }

    .toc-level-3 .toc-link {
        padding-left: 24px;
        font-size: 11px;
    }
}

/* 暗色主题支持 */
@media (prefers-color-scheme: dark) {
    .table-of-contents {
        background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
        border-color: #4a5568;
    }

    .toc-header {
        background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    }

    .toc-link {
        color: #e2e8f0;
    }

    .toc-link:hover {
        background: rgba(102, 126, 234, 0.2);
        color: #a78bfa;
        border-left-color: #a78bfa;
    }

    .toc-link.active {
        background: rgba(102, 126, 234, 0.25);
        color: #a78bfa;
        border-left-color: #a78bfa;
    }

    .toc-level-3 .toc-link {
        color: #a0aec0;
    }

    .toc-content::-webkit-scrollbar-track {
        background: #2d3748;
    }

    .toc-content::-webkit-scrollbar-thumb {
        background: #4a5568;
    }

    .toc-content::-webkit-scrollbar-thumb:hover {
        background: #718096;
    }

    /* 详情弹窗暗色模式 */
    .question-detail-modal {
        background: #1a1a1a;
        color: #e2e8f0;
    }

    .question-detail-header {
        background: rgba(26, 26, 26, 0.95);
        border-bottom-color: #374151;
    }

    .question-detail-title {
        color: #f9fafb;
    }

    .question-detail-close {
        color: #9ca3af;
        background: rgba(75, 85, 99, 0.3);
    }

    .question-detail-close:hover {
        color: #f9fafb;
        background: rgba(75, 85, 99, 0.5);
    }

    .question-detail-answer {
        background: #1a1a1a;
        color: #e2e8f0;
    }

    /* 悬浮返回按钮暗色模式 */
    .question-detail-back-btn {
        background: linear-gradient(135deg, #4c1d95 0%, #581c87 100%);
        box-shadow: 0 8px 24px rgba(76, 29, 149, 0.4);
    }

    .question-detail-back-btn:hover {
        box-shadow: 0 12px 32px rgba(76, 29, 149, 0.5);
    }

    .question-detail-back-btn::after {
        background: rgba(0, 0, 0, 0.9);
        color: #e2e8f0;
    }

    /* 滚动指示器暗色模式 */
    .scroll-indicator {
        background: rgba(76, 29, 149, 0.9);
        color: #e2e8f0;
        box-shadow: 0 4px 20px rgba(76, 29, 149, 0.3);
    }

    .scroll-indicator-close {
        background: rgba(255, 255, 255, 0.2);
        color: #e2e8f0;
    }

    .scroll-indicator-close:hover {
        background: rgba(255, 255, 255, 0.3);
    }

    /* Markdown内容暗色模式 */
    .question-detail-answer h1,
    .question-detail-answer h2,
    .question-detail-answer h3,
    .question-detail-answer h4,
    .question-detail-answer h5,
    .question-detail-answer h6 {
        color: #f9fafb;
    }

    .question-detail-answer p,
    .question-detail-answer li,
    .question-detail-answer td {
        color: #d1d5db;
    }

    .question-detail-answer blockquote {
        background: rgba(55, 65, 81, 0.5);
        border-left-color: #6366f1;
        color: #d1d5db;
    }

    .question-detail-answer code {
        background: #374151;
        color: #fbbf24;
    }

    .question-detail-answer pre {
        background: #111827;
        border: 1px solid #374151;
    }

    .question-detail-answer pre code {
        background: transparent;
        color: #e5e7eb;
    }

    .question-detail-answer table {
        border-color: #374151;
    }

    .question-detail-answer th {
        background: #374151;
        color: #f9fafb;
        border-color: #4b5563;
    }

    .question-detail-answer td {
        border-color: #4b5563;
    }

    .question-detail-answer a {
        color: #8b5cf6;
    }

    .question-detail-answer a:hover {
        color: #a78bfa;
    }

    /* 自定义格式暗色模式 */
    .question-detail-answer .custom-highlight {
        background: linear-gradient(135deg, #7c2d12 0%, #92400e 100%);
        color: #fed7aa;
    }

    .question-detail-answer .custom-quote {
        background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
        color: #cbd5e1;
    }

    .question-detail-answer .custom-bracket {
        background: linear-gradient(135deg, #164e63 0%, #155e75 100%);
        color: #a7f3d0;
    }
}

/* =================== 图片预览功能样式 =================== */

/* 图片预览弹窗遮罩 */
.image-preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 30000; /* 最高优先级，确保在所有内容之上 */
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(8px);
    cursor: zoom-out;
}

.image-preview-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* 图片预览容器 */
.image-preview-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 20px 100px;
    box-sizing: border-box;
}

/* 关闭按钮 */
.image-preview-close {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    color: #333;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 30001;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.image-preview-close:hover {
    background: rgba(255, 255, 255, 1);
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.4);
}

.image-preview-close svg {
    width: 24px;
    height: 24px;
    stroke-width: 2.5;
}

/* 图片包装器 */
.image-preview-wrapper {
    position: relative;
    max-width: 90vw;
    max-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: grab;
}

.image-preview-wrapper.dragging {
    cursor: grabbing;
}

/* 预览图片 */
.image-preview-img {
    max-width: 100%;
    max-height: 100%;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    transition: transform 0.3s ease, opacity 0.3s ease;
    cursor: zoom-in;
    user-select: none;
    -webkit-user-drag: none;
    object-fit: contain;
}

.image-preview-img.zoomed {
    cursor: grab;
}

.image-preview-img.zoomed:active {
    cursor: grabbing;
}

/* 加载指示器 */
.image-preview-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    color: white;
    font-size: 16px;
    font-weight: 500;
}

.image-preview-loader.hidden {
    display: none;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 工具栏 */
.image-preview-toolbar {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 12px 20px;
    border-radius: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    z-index: 30001;
    transition: all 0.3s ease;
}

.image-preview-toolbar:hover {
    background: rgba(255, 255, 255, 0.95);
    transform: translateX(-50%) translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

/* 工具栏按钮 */
.toolbar-btn {
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: 50%;
    color: #333;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    position: relative;
}

.toolbar-btn:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    transform: scale(1.1);
}

.toolbar-btn:active {
    transform: scale(0.95);
}

.toolbar-btn svg {
    width: 20px;
    height: 20px;
}

/* 缩放级别显示 */
.zoom-level {
    font-size: 14px;
    font-weight: 600;
    color: #333;
    min-width: 50px;
    text-align: center;
    padding: 0 8px;
}

/* 操作提示 */
.image-preview-hint {
    position: fixed;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    backdrop-filter: blur(10px);
    z-index: 30001;
    opacity: 0.8;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.image-preview-hint:hover {
    opacity: 1;
}

/* 桌面端和移动端提示切换 */
.hint-mobile {
    display: none;
}

.hint-desktop {
    display: inline;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .image-preview-container {
        padding: 60px 10px 80px;
    }

    .image-preview-close {
        top: 15px;
        right: 15px;
        width: 44px;
        height: 44px;
    }

    .image-preview-close svg {
        width: 22px;
        height: 22px;
    }

    .image-preview-wrapper {
        max-width: 95vw;
        max-height: 75vh;
    }

    .image-preview-toolbar {
        bottom: 20px;
        padding: 10px 16px;
        gap: 10px;
    }

    .toolbar-btn {
        width: 32px;
        height: 32px;
    }

    .toolbar-btn svg {
        width: 18px;
        height: 18px;
    }

    .zoom-level {
        font-size: 13px;
        min-width: 45px;
    }

    .image-preview-hint {
        top: 20px;
        font-size: 12px;
        padding: 6px 12px;
    }

    .hint-mobile {
        display: inline;
    }

    .hint-desktop {
        display: none;
    }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
    .image-preview-container {
        padding: 50px 5px 70px;
    }

    .image-preview-close {
        top: 10px;
        right: 10px;
        width: 40px;
        height: 40px;
    }

    .image-preview-close svg {
        width: 20px;
        height: 20px;
    }

    .image-preview-wrapper {
        max-width: 98vw;
        max-height: 70vh;
    }

    .image-preview-toolbar {
        bottom: 15px;
        padding: 8px 12px;
        gap: 8px;
    }

    .toolbar-btn {
        width: 28px;
        height: 28px;
    }

    .toolbar-btn svg {
        width: 16px;
        height: 16px;
    }

    .zoom-level {
        font-size: 12px;
        min-width: 40px;
        padding: 0 4px;
    }

    .image-preview-hint {
        top: 15px;
        font-size: 11px;
        padding: 4px 8px;
    }
}

/* 暗色主题支持 */
@media (prefers-color-scheme: dark) {
    .image-preview-overlay {
        background: rgba(0, 0, 0, 0.98);
    }

    .image-preview-close {
        background: rgba(30, 30, 30, 0.9);
        color: #e2e8f0;
    }

    .image-preview-close:hover {
        background: rgba(30, 30, 30, 1);
        color: #f9fafb;
    }

    .image-preview-toolbar {
        background: rgba(30, 30, 30, 0.9);
        color: #e2e8f0;
    }

    .image-preview-toolbar:hover {
        background: rgba(30, 30, 30, 0.95);
    }

    .toolbar-btn {
        color: #e2e8f0;
    }

    .toolbar-btn:hover {
        background: rgba(139, 92, 246, 0.2);
        color: #a78bfa;
    }

    .zoom-level {
        color: #e2e8f0;
    }

    .image-preview-hint {
        background: rgba(0, 0, 0, 0.8);
        color: #e2e8f0;
    }
}

/* 无障碍支持 */
@media (prefers-reduced-motion: reduce) {
    .image-preview-overlay,
    .image-preview-img,
    .image-preview-toolbar,
    .toolbar-btn {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }

    .loader-spinner {
        animation: none;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    .image-preview-close,
    .toolbar-btn {
        border: 2px solid currentColor;
    }

    .image-preview-toolbar {
        border: 1px solid;
    }
}

/* 焦点可见性 */
.image-preview-close:focus-visible,
.toolbar-btn:focus-visible {
    outline: 3px solid #4f46e5;
    outline-offset: 2px;
}