* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        :root {
            --primary: #1a3a5f;
            --secondary: #2c6e9b;
            --accent: #e74c3c;
            --light: #f8f9fa;
            --dark: #1c2b3f;
            --gray: #6c757d;
            --success: #28a745;
            --warning: #ffc107;
            --green-light: #d4edda;
            --green-dark: #155724;
            --border-color: #e0e6ed;
        }

        body {
            background-color: #f0f4f8;
            color: #333;
            line-height: 1.6;
        }
        
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }

        /* 头部样式 */
        header {
            background: linear-gradient(135deg, var(--primary), #0e2a47);
            color: white;
            padding: 0;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            z-index: 1000;
        }
        
        .top-bar {
            background-color: rgba(0,0,0,0.2);
            padding: 8px 0;
            font-size: 14px;
        }
        
        .top-bar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .top-links a {
            color: #e0e6ed;
            text-decoration: none;
            margin-right: 15px;
            transition: color 0.3s;
        }
        
        .top-links a:hover {
            color: white;
        }
        
        .top-links a i {
            margin-right: 5px;
        }
        
        .header-main {
            padding: 15px 0;
        }
        
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            font-size: 28px;
            font-weight: 700;
            color: white;
            text-decoration: none;
        }
        
        .logo i {
            color: var(--warning);
            margin-right: 10px;
            font-size: 32px;
        }
        
        .logo span {
            color: #ffd43b;
        }
        
        .logo p {
            color: #fe3902;
        }
        
        .search-box {
            flex: 1;
            max-width: 500px;
            margin: 0 30px;
            position: relative;
        }
        
        .search-box input {
            width: 100%;
            padding: 12px 20px;
            border-radius: 30px;
            border: none;
            font-size: 16px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        
        .search-box button {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--secondary);
            border: none;
            color: white;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            cursor: pointer;
            transition: background 0.3s;
        }
        
        .search-box button:hover {
            background: #1e5a80;
        }
        
        .user-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .btn {
            display: inline-block;
            padding: 10px 20px;
            border-radius: 4px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            cursor: pointer;
            border: none;
            font-size: 15px;

			background: var(--success); color: white; display: block; text-align: center; padding: 12px; text-decoration: none;
        }
        
        .btn-login {
            background-color: transparent;
            color: white;
            border: 2px solid rgba(255,255,255,0.3);
        }
        
        .btn-register {
            background-color: var(--warning);
            color: var(--dark);
        }
        
        .btn-login:hover, .btn-register:hover {
            opacity: 0.9;
            transform: translateY(-2px);
        }
        
        /* 导航菜单 */
        .main-nav {
            background-color: rgba(0,0,0,0.15);
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        
        .nav-container {
            position: relative;
        }
        
        .nav-menu {
            display: flex;
            list-style: none;
            justify-content: space-between;
            overflow-x: auto;
            padding: 5px 0;
        }
        
        .nav-menu::-webkit-scrollbar {
            height: 5px;
        }
        
        .nav-menu::-webkit-scrollbar-thumb {
            background-color: var(--secondary);
            border-radius: 10px;
        }
        
        .nav-item {
            position: relative;
            padding: 10px 0;
            flex-shrink: 0;
        }
        
        .nav-item > a {
            color: white;
            text-decoration: none;
            padding: 10px 15px;
            display: block;
            font-weight: 500;
            transition: all 0.3s;
            border-radius: 4px;
            white-space: nowrap;
        }
        
        .nav-item > a:hover {
            background-color: rgba(255,255,255,0.1);
        }
        
        .nav-item > a i {
            margin-right: 8px;
            font-size: 18px;
            vertical-align: middle;
        }
        
        /* 面包屑导航 */
        .breadcrumb {
            padding: 18px 25px;
            background-color: white;
            margin: 20px 0;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            display: flex;
            align-items: center;
        }
        
        .breadcrumb a {
            color: var(--secondary);
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .breadcrumb a:hover {
            color: var(--primary);
            text-decoration: underline;
        }
        
        .breadcrumb span {
            color: var(--gray);
            margin: 0 8px;
        }
        
        /* 主要内容 */
        .main-content {
            display: flex;
            gap: 30px;
            margin-bottom: 40px;
        }
        
        /* 列表容器 */
        .resource-list-container {
            flex: 3;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            overflow: hidden;
        }
        
        /* 列表头部（筛选和排序） */
        .list-header {
            padding: 20px 25px;
            border-bottom: 1px solid var(--border-color);
            background: #f9fbfd;
        }
        
        .list-title {
            font-size: 24px;
            color: var(--dark);
            margin-bottom: 15px;
            display: flex;
            align-items: center;
        }
        
        .list-title i {
            color: var(--secondary);
            margin-right: 10px;
            background: #e9f5ff;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }
        
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 15px;
        }
        
        .filter-group {
            display: flex;
            align-items: center;
            background: #f0f4f8;
            border-radius: 6px;
            padding: 8px 15px;
        }
        
        .filter-label {
            color: var(--gray);
            margin-right: 10px;
            font-size: 14px;
        }
        
        .filter-select {
            border: none;
            background: transparent;
            color: var(--dark);
            font-weight: 500;
            padding: 5px;
            cursor: pointer;
            outline: none;
        }
        
        .filter-select:focus {
            outline: none;
        }
        
        /* 资源列表 */
        .resource-list {
            padding: 0;
        }
        
        .list-item {
            display: flex;
            padding: 20px 25px;
            border-bottom: 1px solid var(--border-color);
            transition: all 0.3s;
        }
        
        .list-item:hover {
            background-color: #f9fbfd;
            transform: translateY(-2px);
        }
        
        .item-thumb {
            width: 120px;
            height: 100px;
            border-radius: 8px;
            background: linear-gradient(135deg, #f0f4f8, #e2e8f0);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 32px;
            flex-shrink: 0;
            margin-right: 20px;
            overflow: hidden;
        }
        
        .item-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .item-content {
            flex: 1;
        }
        
        .item-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            display: block;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .item-title:hover {
            color: var(--secondary);
        }
        
        .item-description {
            color: var(--gray);
            font-size: 14px;
            margin-bottom: 12px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        
        .item-meta {
            display: flex;
            gap: 20px;
            color: var(--gray);
            font-size: 13px;
            flex-wrap: wrap;
        }
        
        .item-meta span {
            display: flex;
            align-items: center;
        }
        
        .item-meta i {
            margin-right: 6px;
            color: var(--secondary);
        }
        
        .item-download {
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 120px;
            margin-left: 15px;
        }
        
        .btn-view {
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            color: white;
            border: none;
            padding: 8px 20px;
            border-radius: 4px;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.3s;
            text-decoration: none;
            display: inline-block;
        }
        
        .btn-view:hover {
            background: linear-gradient(135deg, #1e5a80, #153a5f);
            transform: translateY(-2px);
        }
        
        /* 分页 */
        .pagination {
            display: flex;
            justify-content: center;
            padding: 25px;
            border-top: 1px solid var(--border-color);
        }
        
        .pagination a, .pagination span {
            display: inline-block;
            width: 36px;
            height: 36px;
            line-height: 36px;
            text-align: center;
            border-radius: 50%;
            margin: 0 5px;
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            transition: all 0.3s;
        }
        
        .pagination a:hover {
            background: var(--secondary);
            color: white;
        }
        
        .pagination .current {
            background: var(--secondary);
            color: white;
        }
        
        .pagination .prev, .pagination .next {
            width: auto;
            padding: 0 15px;
            border-radius: 30px;
        }
        
        /* 侧边栏 */
        .sidebar {
            flex: 1;
        }
        
        .sidebar-card {
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            padding: 25px;
            margin-bottom: 30px;
            position: relative;
            overflow: hidden;
			background: linear-gradient(135deg, #e9f5ff, #d4e8ff); border-left: 4px solid var(--secondary);
        }
        
        .sidebar-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: linear-gradient(to bottom, var(--secondary), var(--primary));
        }
        
        .card-title {
            font-size: 20px;
            color: var(--dark);
            margin-bottom: 20px;
            padding-left: 10px;
            border-left: 3px solid var(--secondary);
        }
        
        /* 分类导航 */
        .category-nav ul {
            list-style: none;
        }
        
        .category-nav li {
            margin-bottom: 10px;
        }
        
        .category-nav a {
            display: block;
            padding: 12px 15px;
            background: #f8f9fa;
            border-radius: 6px;
            color: var(--dark);
            text-decoration: none;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }
        
        .category-nav a:hover {
            background: #e9f5ff;
            transform: translateX(5px);
        }
        
        .category-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 3px;
            background: var(--secondary);
            opacity: 0;
            transition: opacity 0.3s;
        }
        
        .category-nav a:hover::after {
            opacity: 1;
        }
        
        .category-nav a i {
            margin-right: 10px;
            color: var(--secondary);
            width: 20px;
            text-align: center;
        }
        
        /* 下载排行 */
        .download-rankings {
            list-style: none;
        }
        
        .ranking-item {
            display: flex;
            padding: 15px 0;
            border-bottom: 1px dashed #eee;
            align-items: center;
        }
        
        .ranking-item:last-child {
            border-bottom: none;
        }
        
        .rank-number {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: #f0f4f8;
            color: var(--gray);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin-right: 15px;
            flex-shrink: 0;
        }
        
        .rank-number.top {
            background: linear-gradient(135deg, #ffd43b, #fcc419);
            color: #5c3d00;
        }
        
        .resource-info {
            flex: 1;
        }
        
        .resource-name {
            font-weight: 600;
            margin-bottom: 5px;
            display: block;
            color: var(--dark);
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .resource-name:hover {
            color: var(--secondary);
        }
        
        .resource-stats {
            font-size: 13px;
            color: var(--gray);
            display: flex;
            gap: 15px;
        }
        
        /* 页脚 */
        footer {
            background: linear-gradient(135deg, var(--dark), #121f33);
            color: white;
            padding: 50px 0 20px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 40px;
        }
        
        .footer-column h3 {
            margin-bottom: 25px;
            font-size: 20px;
            position: relative;
            padding-bottom: 12px;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 3px;
            background: var(--secondary);
        }
        
        .footer-column ul {
            list-style: none;
        }
        
        .footer-column ul li {
            margin-bottom: 12px;
        }
        
        .footer-column ul li a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
            display: block;
            padding: 5px 0;
        }
        
        .footer-column ul li a:hover {
            color: white;
            transform: translateX(5px);
        }
        
        .footer-column ul li a i {
            width: 20px;
            margin-right: 10px;
            color: var(--secondary);
        }
        
        .daohangt {
            color: #bdc3c7;
            text-align: center;
            padding: 15px 0;
        }
        
        .daohangt a {
            color: #bdc3c7;
            text-decoration: none;
            margin: 0 10px;
            transition: color 0.3s;
        }
        
        .daohangt a:hover {
            color: white;
        }
        
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: #8a9bb0;
            font-size: 15px;
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 992px) {
            .main-content {
                flex-direction: column;
            }
            
            .header-content {
                flex-wrap: wrap;
            }
            
            .search-box {
                order: 3;
                max-width: 100%;
                margin: 15px 0;
            }
            
            .item-download {
                min-width: 100px;
            }
        }
        
        @media (max-width: 768px) {
            .list-item {
                flex-direction: column;
            }
            
            .item-thumb {
                width: 100%;
                height: 180px;
                margin-right: 0;
                margin-bottom: 15px;
            }
            
            .item-download {
                margin-left: 0;
                margin-top: 15px;
                justify-content: flex-start;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
            
            .user-actions, .logo {
                display: none !important;
            }
        }
        
        @media (max-width: 576px) {
            .filter-bar {
                flex-direction: column;
                gap: 10px;
            }
            
            .filter-group {
                width: 100%;
            }
            
            .pagination a, .pagination span {
                width: 30px;
                height: 30px;
                line-height: 30px;
                font-size: 14px;
            }
        }