/* 全局变量和基础样式 */
        :root {
            --primary-color: #3b82f6;
            --primary-light: #60a5fa;
            --primary-dark: #2563eb;
            --secondary-color: #8b5cf6;
            --success-color: #10b981;
            --warning-color: #f59e0b;
            --danger-color: #ef4444;
            --info-color: #06b6d4;
            --dark-color: #1e293b;
            --light-color: #f8fafc;
            --border-color: #e5e7eb;
            --text-primary: #111827;
            --text-secondary: #6b7280;
            --bg-primary: #ffffff;
            --bg-secondary: #f9fafb;
            --bg-tertiary: #f3f4f6;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            --transition-base: all 0.2s ease;
        }

        /* 深色主题变量 */
        [data-theme="dark"] {
            --primary-color: #60a5fa;
            --primary-light: #93c5fd;
            --primary-dark: #3b82f6;
            --light-color: #111827;
            --border-color: #374151;
            --text-primary: #f9fafb;
            --text-secondary: #d1d5db;
            --bg-primary: #1f2937;
            --bg-secondary: #111827;
            --bg-tertiary: #374151;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
        }

        /* 全局样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--light-color);
            min-height: 100vh;
            color: var(--text-primary);
            transition: var(--transition-base);
            line-height: 1.6;
            font-size: 16px;
        }

        /* 去除所有链接下划线 */
        a {
            text-decoration: none !important;
            color: inherit;
            transition: var(--transition-base);
        }

        a:hover {
            color: var(--primary-color);
        }

        /* 滚动进度条 */
        .scroll-progress {
            position: fixed;
            top: 0;
            left: 0;
            width: 0%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            z-index: 1001;
            transition: width 0.1s ease;
        }

        /* 阅读进度指示器 */
        .reading-progress {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--bg-tertiary);
            z-index: 1001;
        }

        .reading-progress-bar {
            height: 100%;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            width: 0%;
            transition: width 0.1s ease;
        }

        /* 导航栏样式 */
        .navbar {
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-color);
            padding: 1rem 0;
            box-shadow: var(--shadow-sm);
            transition: var(--transition-base);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .navbar-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-color) !important;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .navbar-brand i {
            font-size: 1.75rem;
        }

        .navbar-nav .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 500;
            padding: 0.5rem 1rem !important;
            margin: 0 0.25rem;
            border-radius: 6px;
            transition: var(--transition-base);
        }

        .navbar-nav .nav-link:hover {
            color: var(--primary-color) !important;
            background: rgba(59, 130, 246, 0.1);
        }

        .navbar-nav .nav-link.active {
            color: var(--primary-color) !important;
            background: rgba(59, 130, 246, 0.1);
        }

        /* 主题切换按钮 */
        .theme-toggle {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            border-radius: 50%;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition-base);
            margin-left: 1rem;
            cursor: pointer;
        }

        .theme-toggle:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        /* 面包屑导航样式 */
        .breadcrumb-container {
            margin-bottom: 1.5rem;
        }

        .breadcrumb {
            background: transparent;
            padding: 0.75rem 0;
            margin-bottom: 0;
            border-radius: 0;
            font-size: 0.875rem;
        }

        .breadcrumb-item {
            color: var(--text-secondary);
        }

        .breadcrumb-item + .breadcrumb-item::before {
            content: ">";
            color: var(--text-secondary);
        }

        .breadcrumb-item.active {
            color: var(--text-primary);
            font-weight: 500;
        }

        .breadcrumb-item a {
            color: var(--text-secondary);
            transition: var(--transition-base);
        }

        .breadcrumb-item a:hover {
            color: var(--primary-color);
        }

        /* 文章头部样式 */
        .article-header {
            background: var(--bg-primary);
            border-radius: 12px;
            padding: 2rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .article-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        }

        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 0.5rem 1rem;
            background: var(--primary-color);
            color: white;
            border-radius: 20px;
            font-size: 0.875rem;
            font-weight: 500;
            margin-bottom: 1.5rem;
            transition: var(--transition-base);
        }

        .article-category:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .article-title {
            font-size: 2.25rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
            line-height: 1.3;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            color: var(--text-secondary);
            font-size: 0.875rem;
            flex-wrap: wrap;
        }

        .article-author {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .author-avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            object-fit: cover;
        }

        .meta-item {
            display: flex;
            align-items: center;
            gap: 0.375rem;
        }

        /* 文章内容样式 */
        .article-content {
            background: var(--bg-primary);
            border-radius: 12px;
            padding: 2rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            font-size: 1.125rem;
            line-height: 1.8;
            color: var(--text-primary);
        }

        .article-content p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }

        .article-content h2 {
            font-size: 1.75rem;
            font-weight: 700;
            margin: 2.5rem 0 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--primary-color);
            color: var(--text-primary);
        }

        .article-content h3 {
            font-size: 1.375rem;
            font-weight: 600;
            margin: 2rem 0 1rem;
            color: var(--text-primary);
        }

        .article-content ul, .article-content ol {
            margin-bottom: 1.25rem;
            padding-left: 1.5rem;
            color: var(--text-primary);
        }

        .article-content li {
            margin-bottom: 0.5rem;
        }

        .article-content blockquote {
            background: var(--bg-secondary);
            border-left: 4px solid var(--primary-color);
            padding: 1.25rem 1.75rem;
            margin: 2rem 0;
            border-radius: 0 8px 8px 0;
            color: var(--text-secondary);
            font-style: italic;
            font-size: 1.125rem;
            line-height: 1.7;
            position: relative;
        }

        .article-content blockquote::before {
            content: """;
            font-size: 3rem;
            color: var(--primary-color);
            position: absolute;
            top: -0.5rem;
            left: 0.5rem;
            opacity: 0.2;
        }

        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 2rem 0;
            box-shadow: var(--shadow-lg);
            transition: var(--transition-base);
        }

        .article-content img:hover {
            transform: scale(1.02);
            box-shadow: var(--shadow-lg);
        }

        .article-content .highlight {
            background: rgba(59, 130, 246, 0.1);
            color: var(--primary-color);
            padding: 0.125rem 0.375rem;
            border-radius: 4px;
            font-weight: 600;
            transition: var(--transition-base);
        }

        .article-content .highlight:hover {
            background: rgba(59, 130, 246, 0.2);
        }

        /* 下载模块样式 */
        .download-section {
            margin: 2rem 0;
            padding: 1.5rem;
            background: var(--bg-secondary);
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .download-card {
            background: var(--bg-primary);
            border-radius: 10px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition-base);
        }

        .download-card:last-child {
            margin-bottom: 0;
        }

        .download-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .download-header {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            margin-bottom: 1rem;
        }

        .download-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(59, 130, 246, 0.1);
            color: var(--primary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            flex-shrink: 0;
        }

        .download-info {
            flex-grow: 1;
        }

        .download-title {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
            color: var(--text-primary);
        }

        .download-desc {
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin: 0;
        }

        .download-details {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .download-meta {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .download-size, .download-format, .download-pages, .download-files, .download-slides {
            font-size: 0.875rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 0.375rem;
        }

        .download-links {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
        }

        .download-link {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            font-size: 0.875rem;
            font-weight: 500;
            transition: var(--transition-base);
            text-decoration: none;
        }

        .download-link.baidu {
            background: #2980b9;
            color: white;
        }

        .download-link.baidu:hover {
            background: #21618c;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .download-link.aliyun {
            background: #ff6a00;
            color: white;
        }

        .download-link.aliyun:hover {
            background: #e55a00;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .download-link.onedrive {
            background: #0078d4;
            color: white;
        }

        .download-link.onedrive:hover {
            background: #005a9e;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* 侧边栏下载模块样式 */
        .download-sidebar {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .download-sidebar-item {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.75rem;
            background: var(--bg-secondary);
            border-radius: 8px;
            transition: var(--transition-base);
            border: 1px solid var(--border-color);
        }

        .download-sidebar-item:hover {
            background: var(--bg-primary);
            transform: translateX(5px);
        }

        .download-sidebar-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: rgba(59, 130, 246, 0.1);
            color: var(--primary-color);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.125rem;
            flex-shrink: 0;
        }

        .download-sidebar-content {
            flex-grow: 1;
        }

        .download-sidebar-title {
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 0.25rem;
            color: var(--text-primary);
        }

        .download-sidebar-meta {
            font-size: 0.75rem;
            color: var(--text-secondary);
        }

        .download-sidebar-link {
            width: 32px;
            height: 32px;
            border-radius: 6px;
            background: var(--primary-color);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition-base);
            flex-shrink: 0;
        }

        .download-sidebar-link:hover {
            background: var(--primary-dark);
            transform: scale(1.1);
        }

        .download-more {
            text-align: center;
            margin-top: 0.5rem;
        }

        .download-more a {
            display: inline-block;
            padding: 0.5rem 1rem;
            background: var(--bg-secondary);
            border-radius: 20px;
            font-size: 0.875rem;
            color: var(--primary-color);
            font-weight: 500;
            transition: var(--transition-base);
            border: 1px solid var(--border-color);
        }

        .download-more a:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        /* 文章标签样式 */
        .article-tags {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
        }

        .tag-label {
            font-weight: 600;
            color: var(--text-secondary);
            margin-right: 0.75rem;
        }

        .article-tag {
            display: inline-block;
            padding: 0.375rem 0.875rem;
            background: var(--bg-secondary);
            border-radius: 20px;
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-right: 0.5rem;
            margin-bottom: 0.5rem;
            transition: var(--transition-base);
            border: 1px solid var(--border-color);
        }

        .article-tag:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        /* 上一篇/下一篇文章导航 */
        .article-navigation {
            background: var(--bg-primary);
            border-radius: 12px;
            padding: 1.5rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .article-nav-link {
            flex: 1;
            max-width: 45%;
            padding: 0.75rem 1rem;
            border-radius: 8px;
            transition: var(--transition-base);
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .article-nav-link:hover {
            background: var(--bg-secondary);
            transform: translateY(-2px);
        }

        .article-nav-link.prev {
            text-align: left;
        }

        .article-nav-link.next {
            text-align: right;
            flex-direction: row-reverse;
        }

        .article-nav-icon {
            font-size: 1.25rem;
            color: var(--primary-color);
        }

        .article-nav-content {
            flex-grow: 1;
            overflow: hidden;
        }

        .article-nav-label {
            font-size: 0.75rem;
            color: var(--text-secondary);
            margin-bottom: 0.25rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .article-nav-title {
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* 作者信息卡片 */
        .author-card {
            background: var(--bg-primary);
            border-radius: 12px;
            padding: 2rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 1.5rem;
            position: relative;
            overflow: hidden;
        }

        .author-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        }

        .author-avatar-large {
            width: 100px;
            height: 100px;
            border-radius: 50%;
            object-fit: cover;
            flex-shrink: 0;
            border: 3px solid var(--bg-secondary);
            box-shadow: var(--shadow-md);
        }

        .author-info {
            flex-grow: 1;
        }

        .author-name {
            font-size: 1.375rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
        }

        .author-bio {
            color: var(--text-secondary);
            margin-bottom: 1.25rem;
            line-height: 1.6;
            font-size: 0.875rem;
        }

        .author-stats {
            display: flex;
            gap: 1.75rem;
            font-size: 0.875rem;
            color: var(--text-secondary);
        }

        .author-stat {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: var(--transition-base);
        }

        .author-stat:hover {
            color: var(--primary-color);
        }

        /* 相关文章样式 */
        .related-articles {
            background: var(--bg-primary);
            border-radius: 12px;
            padding: 1.75rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        .section-title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .section-title i {
            color: var(--primary-color);
        }

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

        .related-item {
            padding: 1rem 0;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            gap: 1rem;
            align-items: center;
            transition: var(--transition-base);
        }

        .related-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .related-item:hover {
            padding-left: 0.5rem;
        }

        .related-image {
            width: 100px;
            height: 70px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .related-content {
            flex-grow: 1;
        }

        .related-title {
            font-weight: 500;
            margin-bottom: 0.375rem;
            color: var(--text-primary);
            line-height: 1.4;
            font-size: 1rem;
        }

        .related-meta {
            font-size: 0.875rem;
            color: var(--text-secondary);
        }

        /* 评论区域样式 */
        .comments-section {
            background: var(--bg-primary);
            border-radius: 12px;
            padding: 1.75rem;
            margin-bottom: 2rem;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        .comment-form {
            margin-bottom: 2.5rem;
            padding-bottom: 1.75rem;
            border-bottom: 1px solid var(--border-color);
        }

        .form-control {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            border-radius: 8px;
            padding: 0.875rem 1.25rem;
            transition: var(--transition-base);
            font-size: 1rem;
        }

        .form-control:focus {
            background: var(--bg-primary);
            border-color: var(--primary-color);
            color: var(--text-primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }

        .comment-item {
            display: flex;
            gap: 1.25rem;
            margin-bottom: 1.75rem;
            padding-bottom: 1.75rem;
            border-bottom: 1px solid var(--border-color);
        }

        .comment-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .comment-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            object-fit: cover;
            flex-shrink: 0;
            border: 2px solid var(--bg-secondary);
        }

        .comment-content {
            flex-grow: 1;
        }

        .comment-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 0.75rem;
        }

        .comment-author {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 1rem;
        }

        .comment-time {
            font-size: 0.875rem;
            color: var(--text-secondary);
        }

        .comment-text {
            color: var(--text-primary);
            line-height: 1.7;
            margin-bottom: 1rem;
        }

        .comment-actions {
            display: flex;
            gap: 1.25rem;
            font-size: 0.875rem;
        }

        .comment-action {
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .comment-action:hover {
            color: var(--primary-color);
        }

        /* 分享按钮样式 */
        .share-buttons {
            display: flex;
            gap: 0.75rem;
            margin-top: 1rem;
            flex-wrap: wrap;
        }

        .share-button {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            transition: var(--transition-base);
            cursor: pointer;
            position: relative;
        }

        .share-button:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .share-weibo {
            background: #e6162d;
        }

        .share-wechat {
            background: #07c160;
        }

        .share-twitter {
            background: #1da1f2;
        }

        .share-facebook {
            background: #4267b2;
        }

        .share-link {
            background: #6c757d;
        }

        /* 微信二维码弹窗 */
        .wechat-qrcode-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1050;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .wechat-qrcode-modal.show {
            opacity: 1;
            visibility: visible;
        }

        .wechat-qrcode-content {
            background: var(--bg-primary);
            border-radius: 12px;
            padding: 2rem;
            max-width: 320px;
            width: 90%;
            text-align: center;
            box-shadow: var(--shadow-lg);
            transform: scale(0.8);
            transition: all 0.3s ease;
        }

        .wechat-qrcode-modal.show .wechat-qrcode-content {
            transform: scale(1);
        }

        .wechat-qrcode-title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .wechat-qrcode-desc {
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
        }

        .wechat-qrcode {
            display: inline-block;
            padding: 1rem;
            background: white;
            border-radius: 8px;
            box-shadow: var(--shadow-md);
        }

        .wechat-qrcode-close {
            margin-top: 1.5rem;
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            border-radius: 8px;
            padding: 0.625rem 1.25rem;
            font-weight: 500;
            transition: var(--transition-base);
            cursor: pointer;
            width: 100%;
        }

        .wechat-qrcode-close:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        /* 工具栏样式 */
        .toolbar {
            position: fixed;
            bottom: 20px;
            right: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 1000;
        }

        .tool-btn {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-base);
            color: var(--text-secondary);
        }

        .tool-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
            color: var(--primary-color);
            border-color: var(--primary-color);
        }

        /* 字体大小调整控件 */
        .font-size-controls {
            position: fixed;
            bottom: 25px;
            left: 25px;
            display: flex;
            gap: 10px;
            z-index: 1000;
            background: var(--bg-primary);
            padding: 10px;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }

        .font-size-btn {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .font-size-btn:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        .font-size-btn.active {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        /* 页脚样式 */
        footer {
            background: var(--bg-primary);
            border-top: 1px solid var(--border-color);
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: var(--text-secondary);
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.375rem 0.75rem;
            border-radius: 6px;
            transition: var(--transition-base);
        }

        .footer-links a:hover {
            color: var(--primary-color);
            background: rgba(59, 130, 246, 0.1);
        }

        .footer-copyright {
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.875rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
        }

        /* Toast提示样式 */
        .toast-container {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 1055;
        }

        .custom-toast {
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            padding: 1rem 1.25rem;
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            min-width: 250px;
            animation: slideInRight 0.3s ease forwards;
        }

        @keyframes slideInRight {
            from {
                transform: translateX(100%);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        .toast-icon {
            margin-right: 0.75rem;
            font-size: 1.25rem;
        }

        .toast-success .toast-icon {
            color: var(--success-color);
        }

        .toast-error .toast-icon {
            color: var(--danger-color);
        }

        .toast-info .toast-icon {
            color: var(--primary-color);
        }

        .toast-message {
            flex-grow: 1;
            font-weight: 500;
        }

        .toast-close {
            background: none;
            border: none;
            color: var(--text-secondary);
            cursor: pointer;
            margin-left: 0.75rem;
            font-size: 1.125rem;
            transition: var(--transition-base);
        }

        .toast-close:hover {
            color: var(--text-primary);
        }

        /* 侧边栏样式 */
        .sidebar-widget {
            background: var(--bg-primary);
            border-radius: 12px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            transition: var(--transition-base);
        }

        .sidebar-widget:hover {
            box-shadow: var(--shadow-lg);
        }

        .widget-title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
            padding-bottom: 0.875rem;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .widget-title i {
            color: var(--primary-color);
        }

        /* 栏目分类列表样式 */
        .category-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .category-item {
            margin-bottom: 0.75rem;
        }

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

        .category-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.75rem 1rem;
            background: var(--bg-secondary);
            border-radius: 8px;
            color: var(--text-primary);
            font-weight: 500;
            transition: var(--transition-base);
            border: 1px solid var(--border-color);
        }

        .category-link:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateX(5px);
        }

        .category-link.active {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        .category-icon {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .category-count {
            background: rgba(0, 0, 0, 0.1);
            padding: 0.125rem 0.625rem;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        .category-link:hover .category-count,
        .category-link.active .category-count {
            background: rgba(255, 255, 255, 0.2);
        }

        /* 热门文章列表 */
        .trending-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .trending-item {
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: flex-start;
            transition: var(--transition-base);
        }

        .trending-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .trending-item:hover {
            padding-left: 0.5rem;
        }

        .trending-number {
            font-size: 1.125rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-right: 0.75rem;
            min-width: 24px;
            text-align: center;
        }

        .trending-content {
            flex-grow: 1;
        }

        .trending-title {
            font-weight: 500;
            margin-bottom: 0.25rem;
            color: var(--text-primary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
            white-space: nowrap;
        }

        .trending-meta {
            font-size: 0.75rem;
            color: var(--text-secondary);
        }

        /* 标签云样式 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.625rem;
        }

        .tag-cloud-item {
            display: inline-block;
            padding: 0.5rem 0.875rem;
            background: var(--bg-secondary);
            border-radius: 20px;
            font-size: 0.875rem;
            color: var(--text-secondary);
            transition: var(--transition-base);
            border: 1px solid var(--border-color);
        }

        .tag-cloud-item:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* 目录导航样式 */
        .article-toc {
            background: var(--bg-secondary);
            border-radius: 8px;
            padding: 1rem;
            border: 1px solid var(--border-color);
        }

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

        .article-toc li {
            margin-bottom: 0.5rem;
        }

        .article-toc a {
            display: block;
            padding: 0.5rem 0.75rem;
            color: var(--text-secondary);
            border-radius: 6px;
            transition: var(--transition-base);
            font-weight: 500;
        }

        .article-toc a:hover {
            background: var(--bg-primary);
            color: var(--primary-color);
        }

        .article-toc a.active {
            background: var(--primary-color);
            color: white;
        }

        /* 按钮样式 */
        .btn-primary {
            background: var(--primary-color);
            border: none;
            color: white;
            border-radius: 8px;
            padding: 0.75rem 1.5rem;
            font-weight: 500;
            transition: var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* 图片懒加载样式 */
        img.lazy-load {
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        img.lazy-load.loaded {
            opacity: 1;
        }

        /* 复制链接提示样式 */
        .copy-link-tooltip {
            position: absolute;
            bottom: 100%;
            left: 50%;
            transform: translateX(-50%);
            background: var(--text-primary);
            color: var(--bg-primary);
            padding: 0.375rem 0.75rem;
            border-radius: 6px;
            font-size: 0.75rem;
            white-space: nowrap;
            opacity: 0;
            visibility: hidden;
            transition: all 0.2s ease;
            margin-bottom: 8px;
        }

        .copy-link-tooltip::after {
            content: '';
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%);
            border-width: 6px;
            border-style: solid;
            border-color: var(--text-primary) transparent transparent transparent;
        }

        .share-button:hover .copy-link-tooltip {
            opacity: 1;
            visibility: visible;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .article-content {
                padding: 1.5rem;
            }
            
            .article-header {
                padding: 1.5rem;
            }
            
            .author-card {
                padding: 1.25rem;
            }
            
            .related-articles {
                padding: 1.25rem;
            }
            
            .comments-section {
                padding: 1.25rem;
            }
            
            .font-size-controls {
                bottom: 15px;
                left: 15px;
            }
            
            .article-navigation {
                flex-direction: column;
                gap: 1rem;
            }
            
            .article-nav-link {
                max-width: 100%;
            }
        }

        @media (max-width: 768px) {
            .article-header {
                padding: 1.25rem;
            }
            
            .article-title {
                font-size: 1.5rem;
            }
            
            .article-content {
                padding: 1.25rem;
                font-size: 1rem;
            }
            
            .article-content h2 {
                font-size: 1.25rem;
            }
            
            .article-content h3 {
                font-size: 1.125rem;
            }
            
            .author-card {
                flex-direction: column;
                text-align: center;
                padding: 1.25rem;
            }
            
            .related-item {
                flex-direction: column;
            }
            
            .related-image {
                width: 100%;
                height: 150px;
            }
            
            .toolbar {
                bottom: 15px;
                right: 15px;
            }
            
            .tool-btn {
                width: 44px;
                height: 44px;
            }
            
            .footer-links {
                gap: 1rem;
            }
            
            .font-size-controls {
                display: none;
            }
        }

        /* 修复布局问题 */
        .container {
            max-width: 1200px;
            padding-left: 15px;
            padding-right: 15px;
            margin-left: auto;
            margin-right: auto;
        }

        .row {
            display: flex;
            flex-wrap: wrap;
            margin-right: -15px;
            margin-left: -15px;
        }

        .col-lg-8 {
            flex: 0 0 66.666667%;
            max-width: 66.666667%;
            padding-right: 15px;
            padding-left: 15px;
        }

        .col-lg-4 {
            flex: 0 0 33.333333%;
            max-width: 33.333333%;
            padding-right: 15px;
            padding-left: 15px;
        }

        @media (max-width: 992px) {
            .col-lg-8, .col-lg-4 {
                flex: 0 0 100%;
                max-width: 100%;
            }
        }

        /* 修复导航栏折叠问题 */
        .navbar-collapse {
            flex-basis: 100%;
            flex-grow: 1;
            align-items: center;
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                display: none !important;
            }
            
            .navbar-collapse.show {
                display: block !important;
            }
        }

        /* 修复图片响应式问题 */
        img {
            max-width: 100%;
            height: auto;
        }

        /* 修复表单控件样式 */
        input, textarea, select {
            width: 100%;
        }

        /* 修复工具栏z-index问题 */
        .toolbar {
            z-index: 999;
        }

        /* 修复Toast容器z-index问题 */
        .toast-container {
            z-index: 1055;
        }