* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        :root {
            --primary-color: #165DFF;
            --primary-light: #4080FF;
            --primary-dark: #0E42D2;
            --primary-bg: #F0F5FF;
            --text-primary: #1D2129;
            --text-secondary: #4E5969;
            --text-tertiary: #86909C;
            --border-color: #E5E6EB;
            --bg-color: #F7F8FA;
            --white: #FFFFFF;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg-color);
            color: var(--text-primary);
            line-height: 1.6;
        }
        .container {
            width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .header {
            background: var(--white);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            width: 100%;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 64px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 600;
            color: var(--text-primary);
            text-decoration: none;
        }
        .logo i {
            font-size: 24px;
            color: var(--primary-color);
        }
        .nav {
            display: flex;
            gap: 32px;
        }
        .nav a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.2s;
            position: relative;
        }
        .nav a:hover,
        .nav a.active {
            color: var(--primary-color);
        }
        .nav a.active::after {
            content: '';
            position: absolute;
            bottom: -22px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--primary-color);
            border-radius: 1px;
        }
        .user-menu {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .user-menu a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 14px;
            padding: 8px 16px;
            border-radius: 6px;
            transition: all 0.2s;
        }
        .user-menu a:hover {
            background: var(--primary-bg);
            color: var(--primary-color);
        }
        .user-menu a.btn-primary {
            background: var(--primary-color);
            color: var(--white);
        }
        .user-menu a.btn-primary:hover {
            background: var(--primary-dark);
            color: var(--white);
        }
        .mobile-actions {
            display: none;
            gap: 8px;
            align-items: center;
        }
        .mobile-btn {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            text-decoration: none;
            border-radius: 6px;
            transition: all 0.2s;
            font-size: 18px;
            cursor: pointer;
        }
        .mobile-btn:hover {
            background: var(--primary-bg);
            color: var(--primary-color);
        }
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
        }
        .mobile-menu-overlay.active {
            display: block;
        }
        .mobile-menu-drawer {
            position: fixed;
            top: 0;
            right: -280px;
            width: 280px;
            height: 100vh;
            background: var(--white);
            z-index: 1000;
            transition: right 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .mobile-menu-drawer.active {
            right: 0;
        }
        .mobile-menu-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px;
            border-bottom: 1px solid var(--border-color);
        }
        .mobile-menu-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
        }
        .mobile-menu-close {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-tertiary);
            cursor: pointer;
            border-radius: 6px;
            transition: all 0.2s;
        }
        .mobile-menu-close:hover {
            background: var(--bg-color);
            color: var(--text-primary);
        }
        .mobile-menu-list {
            flex: 1;
            overflow-y: auto;
            padding: 12px 0;
        }
        .mobile-menu-list a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 20px;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 15px;
            transition: all 0.2s;
        }
        .mobile-menu-list a:hover,
        .mobile-menu-list a.active {
            background: var(--primary-bg);
            color: var(--primary-color);
        }
        .mobile-menu-list a i {
            width: 20px;
            text-align: center;
            font-size: 16px;
        }
        .mobile-menu-footer {
            padding: 20px;
            border-top: 1px solid var(--border-color);
        }
        .mobile-menu-footer a {
            display: block;
            width: 100%;
            text-align: center;
            padding: 12px;
            background: var(--primary-color);
            color: var(--white);
            text-decoration: none;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 500;
            transition: background 0.2s;
        }
        .mobile-menu-footer a:hover {
            background: var(--primary-dark);
        }
        .page-banner {
            margin-top: 64px;
            padding: 60px 0;
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 300px;
            height: 300px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
        }
        .page-banner .container {
            position: relative;
            z-index: 1;
        }
        .page-banner h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 12px;
        }
        .page-banner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
        }
        .breadcrumb {
            background: var(--white);
            padding: 16px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-tertiary);
        }
        .breadcrumb a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--primary-color);
        }
        .breadcrumb i {
            font-size: 12px;
        }
        .main-content {
            padding: 40px 0;
        }
        .content-layout {
            display: grid;
            grid-template-columns: 240px 1fr;
            gap: 30px;
        }
        .sidebar {
            background: var(--white);
            border-radius: 8px;
            padding: 20px;
            height: fit-content;
            border: 1px solid var(--border-color);
        }
        .sidebar-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-color);
            display: inline-block;
        }
        .category-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .category-list li {
            margin-bottom: 4px;
        }
        .category-list li a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 14px;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 14px;
            border-radius: 6px;
            transition: all 0.2s;
        }
        .category-list li a:hover,
        .category-list li a.active {
            background: var(--primary-bg);
            color: var(--primary-color);
        }
        .category-list li a i {
            font-size: 12px;
            opacity: 0.6;
        }
        .content-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
        }
        .content-count {
            font-size: 14px;
            color: var(--text-secondary);
        }
        .content-count span {
            color: var(--primary-color);
            font-weight: 600;
        }
        .search-box {
            display: flex;
            gap: 0;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            overflow: hidden;
            background: var(--white);
        }
        .search-box input {
            border: none;
            outline: none;
            padding: 8px 16px;
            font-size: 14px;
            width: 240px;
            background: transparent;
        }
        .search-box button {
            border: none;
            background: var(--primary-color);
            color: var(--white);
            padding: 0 20px;
            cursor: pointer;
            font-size: 14px;
            transition: background 0.2s;
        }
        .search-box button:hover {
            background: var(--primary-dark);
        }
        .content-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .content-card {
            background: var(--white);
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all 0.3s;
            cursor: pointer;
        }
        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px rgba(22, 93, 255, 0.1);
            border-color: var(--primary-light);
        }
        .content-card-cover {
            width: 100%;
            height: 180px;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }
        .content-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .content-card-cover i {
            font-size: 48px;
            color: rgba(255, 255, 255, 0.9);
        }
        .content-card-tags {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            gap: 6px;
        }
        .tag {
            padding: 2px 8px;
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary-color);
            font-size: 12px;
            border-radius: 4px;
            font-weight: 500;
        }
        .tag-hot {
            background: #FF7D00;
            color: var(--white);
        }
        .tag-new {
            background: #00B42A;
            color: var(--white);
        }
        .content-card-body {
            padding: 20px;
        }
        .content-card-category {
            font-size: 12px;
            color: var(--primary-color);
            font-weight: 500;
            margin-bottom: 8px;
        }
        .content-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 44px;
        }
        .content-card-summary {
            font-size: 13px;
            color: var(--text-tertiary);
            line-height: 1.6;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 40px;
        }
        .content-card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 12px;
            border-top: 1px solid var(--border-color);
        }
        .content-card-meta {
            display: flex;
            gap: 16px;
            font-size: 12px;
            color: var(--text-tertiary);
        }
        .content-card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .content-card-meta i {
            font-size: 12px;
        }
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
            margin-top: 40px;
        }
        .page-item {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 36px;
            height: 36px;
            padding: 0 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 14px;
            color: var(--text-secondary);
            text-decoration: none;
            transition: all 0.2s;
            cursor: pointer;
            background: var(--white);
        }
        .page-item:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
        }
        .page-item.active {
            background: var(--primary-color);
            border-color: var(--primary-color);
            color: var(--white);
        }
        .page-dots {
            color: var(--text-tertiary);
            padding: 0 4px;
        }
        .empty-state {
            text-align: center;
            padding: 80px 20px;
            background: var(--white);
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }
        .empty-state i {
            font-size: 64px;
            color: var(--text-tertiary);
            margin-bottom: 16px;
        }
        .empty-state p {
            font-size: 14px;
            color: var(--text-tertiary);
        }
        .footer {
            background: #1D2129;
            padding: 60px 0 20px;
            color: var(--white);
        }
        .footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-section h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .footer-section p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-bottom: 8px;
        }
        .footer-section ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-section ul li {
            margin-bottom: 12px;
        }
        .footer-section ul li a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
        }
        .footer-section ul li a:hover {
            color: var(--primary-light);
        }
        .footer-section ul li i {
            margin-right: 8px;
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
        }
        @media (max-width: 1200px) {
            .container {
                width: 100%;
            }
            .content-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .nav {
                display: none;
            }
            .user-menu {
                display: none;
            }
            .mobile-actions {
                display: flex;
            }
            .content-layout {
                grid-template-columns: 1fr;
            }
            .sidebar {
                order: 2;
            }
            .content-list {
                grid-template-columns: 1fr;
            }
            .footer .container {
                grid-template-columns: 1fr 1fr;
            }
            .page-banner h1 {
                font-size: 28px;
            }
        }
        @media (max-width: 480px) {
            .content-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 16px;
            }
            .search-box {
                width: 100%;
            }
            .search-box input {
                flex: 1;
            }
            .footer .container {
                grid-template-columns: 1fr;
            }
        }