:root {
            --primary-orange: #FF6B35;
            --primary-orange-dark: #E85A2A;
            --primary-orange-light: #FFF3ED;
            --secondary-gold: #D4A84B;
            --text-dark: #2D3436;
            --text-gray: #636E72;
            --text-light: #B2BEC3;
            --bg-light: #F8F9FA;
            --border-gray: #DFE6E9;
            --success-green: #00B894;
            --danger-red: #E74C3C;
        }
        
        * {
            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(--bg-light);
            color: var(--text-dark);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
       
        /* 面包屑导航 */
        .breadcrumb-section {
            background: #fff;
            border-bottom: 1px solid var(--border-gray);
            padding: 15px 0;
        }
        
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            list-style: none;
            margin: 0;
            padding: 0;
            font-size: 0.9rem;
        }
        
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .breadcrumb li a {
            color: var(--text-gray);
            text-decoration: none;
            transition: color 0.2s;
        }
        
        .breadcrumb li a:hover {
            color: var(--primary-orange);
        }
        
        .breadcrumb li.active {
            color: var(--text-dark);
            font-weight: 500;
        }
        
        .breadcrumb-separator {
            color: var(--text-light);
        }
        
        /* 主内容区 */
        .main-content {
            flex: 1;
            padding: 40px 0;
        }
        
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }
        
        /* 文章主体 */
        .article-main {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0,0,0,0.06);
        }
        
        .article-cover {
            width: 100%;
            height: 400px;
            object-fit: cover;
        }
        
        .article-body {
            padding: 40px;
        }
        
        /* 返回按钮 */
        .back-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-gray);
            text-decoration: none;
            font-size: 0.9rem;
            margin-bottom: 25px;
            transition: all 0.2s;
        }
        
        .back-btn:hover {
            color: var(--primary-orange);
            gap: 12px;
        }
        
        /* 文章元信息 */
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            margin-bottom: 20px;
        }
        
        .article-category {
            background: var(--primary-orange-light);
            color: var(--primary-orange);
            padding: 5px 15px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
        }
        
        .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
            color: var(--text-gray);
            font-size: 0.9rem;
        }
        
        .pinned-badge {
            background: linear-gradient(135deg, var(--danger-red), #C0392B);
            color: #fff;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        
        /* 文章标题 */
        .article-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 30px;
        }
        
        /* 文章内容 */
        .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-dark);
        }
        
        .article-content p {
            margin-bottom: 1.5em;
        }
        
        .article-content h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-dark);
            margin: 2em 0 1em;
            padding-left: 15px;
            border-left: 4px solid var(--primary-orange);
        }
        
        .article-content h4 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-dark);
            margin: 1.5em 0 0.8em;
        }
        
        .article-content ul,
        .article-content ol {
            margin: 1em 0 1.5em 1.5em;
        }
        
        .article-content li {
            margin-bottom: 0.8em;
        }
        
        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 1.5em 0;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            cursor: pointer;
            transition: transform 0.3s;
        }
        
        .article-content img:hover {
            transform: scale(1.02);
        }
        
        .article-content blockquote {
            background: var(--bg-light);
            border-left: 4px solid var(--primary-orange);
            padding: 20px 25px;
            margin: 1.5em 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: var(--text-gray);
        }
        
        .article-content blockquote p {
            margin: 0;
        }
        
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        
        .article-content table th,
        .article-content table td {
            padding: 15px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-gray);
        }
        
        .article-content table th {
            background: var(--primary-orange);
            color: #fff;
            font-weight: 600;
        }
        
        .article-content table tr:last-child td {
            border-bottom: none;
        }
        
        .article-content table tr:nth-child(even) {
            background: var(--bg-light);
        }
        
        .article-content a {
            color: var(--primary-orange);
            text-decoration: none;
            border-bottom: 1px dashed var(--primary-orange);
            transition: all 0.2s;
        }
        
        .article-content a:hover {
            border-bottom-style: solid;
        }
        
        .article-content strong {
            color: var(--text-dark);
            font-weight: 600;
        }
        
        /* 文章底部 */
        .article-footer {
            margin-top: 40px;
            padding-top: 30px;
            border-top: 1px solid var(--border-gray);
        }

        /* 上一篇下一篇 */
        .article-nav {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        
        .article-nav-item {
            background: var(--bg-light);
            border-radius: 12px;
            padding: 20px;
            text-decoration: none;
            transition: all 0.2s;
        }
        
        .article-nav-item:hover {
            background: var(--primary-orange-light);
        }
        
        .article-nav-item.disabled {
            opacity: 0.5;
            pointer-events: none;
        }
        
        .article-nav-label {
            font-size: 0.85rem;
            color: var(--text-gray);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .article-nav-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .article-nav-item.next {
            text-align: right;
        }
        
        .article-nav-item.next .article-nav-label {
            justify-content: flex-end;
        }
        
        /* 侧边栏 */
        .article-sidebar {
            position: sticky;
            top: 100px;
        }
        
        .sidebar-card {
            background: #fff;
            border-radius: 16px;
            padding: 25px;
            margin-bottom: 25px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.06);
        }
        
        .sidebar-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--primary-orange);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        /* 相关资讯 */
        .related-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .related-item {
            padding: 15px 0;
            border-bottom: 1px solid var(--border-gray);
        }
        
        .related-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        
        .related-item:first-child {
            padding-top: 0;
        }
        
        .related-link {
            text-decoration: none;
            display: block;
        }
        
        .related-title {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-dark);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.2s;
        }
        
        .related-link:hover .related-title {
            color: var(--primary-orange);
        }
        
        .related-date {
            font-size: 0.8rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 5px;
        }

        /* 图片灯箱 */
        .lightbox-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.9);
            z-index: 9999;
            justify-content: center;
            align-items: center;
            cursor: zoom-out;
        }
        
        .lightbox-overlay.active {
            display: flex;
        }
        
        .lightbox-image {
            max-width: 90%;
            max-height: 90%;
            border-radius: 8px;
        }
        
        .lightbox-close {
            position: absolute;
            top: 20px;
            right: 20px;
            color: #fff;
            font-size: 2rem;
            cursor: pointer;
            opacity: 0.8;
            transition: opacity 0.2s;
        }
        
        .lightbox-close:hover {
            opacity: 1;
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .nav-menu li a {
                padding: 20px 8px;
                font-size: 0.85rem;
            }
            
            .article-layout {
                grid-template-columns: 1fr 280px;
                gap: 30px;
            }
        }
        
        @media (max-width: 960px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .nav-menu li a {
                padding: 12px 0;
                border-bottom: 1px solid var(--border-gray);
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .article-layout {
                grid-template-columns: 1fr;
            }
            
            .article-sidebar {
                position: static;
            }
            
            .article-cover {
                height: 300px;
            }
            
            .article-body {
                padding: 30px;
            }
            
            .article-title {
                font-size: 1.6rem;
            }
        }
        
        @media (max-width: 640px) {
            .navbar-container {
                padding: 10px 15px;
            }
            
            .logo-text {
                font-size: 1.2rem;
            }
            
            .auth-buttons {
                display: none;
            }
            
            .article-cover {
                height: 200px;
            }
            
            .article-body {
                padding: 20px;
            }
            
            .article-title {
                font-size: 1.4rem;
            }
            
            .article-meta {
                gap: 12px;
            }
            
            .article-content {
                font-size: 1rem;
            }
            
            .article-content h3 {
                font-size: 1.2rem;
            }
            
            .article-nav {
                grid-template-columns: 1fr;
            }
            
            .article-nav-item.next {
                text-align: left;
            }
            
            .article-nav-item.next .article-nav-label {
                justify-content: flex-start;
            }
            
            .breadcrumb {
                font-size: 0.8rem;
            }
            
            .footer-content {
                flex-direction: column;
                text-align: center;
            }
            
            .footer-brand p {
                margin: 15px auto 0;
            }
            
            .social-icons {
                justify-content: center;
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }