* {
            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;
        }
        

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

	/* 健康上网标语 */
  .green-banner {
    background: var(--green-light);
    color: var(--green-dark);
    border-left: 5px solid #28a745;
    padding: 15px 20px;
    margin: 30px 0 20px;
    border-radius: 0 8px 8px 0;
    display: flex
;
    align-items: center;
    gap: 15px;
}
        
        .green-banner i {
            font-size: 28px;
            color: var(--success);
        }
        
        .green-banner p {
            font-size: 18px;
            font-weight: 500;
        }

.btn-contribute {
    background-color: var(--success);
    color: white;
    display: flex
;
    align-items: center;
    gap: 8px;
}
        /* 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);
           /*  position: sticky;
            top: 0; 顶部悬停*/
            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;
        }
        
        .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;
        }
        
        .nav-item {
            position: relative;
            padding: 15px 0;
        }
        
        .nav-item > a {
            color: white;
            text-decoration: none;
            padding: 15px 20px;
            display: block;
            font-weight: 500;
            transition: all 0.3s;
            border-radius: 4px;
        }
        
        .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;
        }
        
        /* 下拉菜单 */
        .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 0;
            background-color: white;
            min-width: 220px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.15);
            border-radius: 0 0 8px 8px;
            z-index: 100;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s ease;
        }
       .dropdown-menu {
      display: flex; /* 使用flex布局实现两列 */
      min-width: 400px; /* 增加最小宽度 */
   }
   .dropdown-column {
      flex: 1; /* 两列等宽 */
      min-width: 200px; /* 每列最小宽度 */
   }
   

        .nav-item:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .dropdown-menu a {
            display: block;
            padding: 12px 20px;
            color: var(--dark);
            text-decoration: none;
            border-bottom: 1px solid #eee;
            transition: all 0.2s;
        }
        
        .dropdown-menu a:last-child {
            border-bottom: none;
        }
        
        .dropdown-menu a:hover {
            background-color: #f5f9ff;
            color: var(--secondary);
            padding-left: 25px;
        }
        
        .dropdown-menu a i {
            color: var(--secondary);
            margin-right: 10px;
            width: 20px;
            text-align: center;
        }
        
        /* 面包屑导航 */
        .breadcrumb {
            padding: 18px 0;
            background-color: white;
            margin: 20px 0;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        
        .breadcrumb a {
            color: var(--secondary);
            text-decoration: none;
            transition: color 0.3s;
			 margin-left: 10px;
        }
        
        .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;
        }
        
        .resource-detail {
            flex: 3;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            padding: 30px;
            position: relative;
            overflow: hidden;
        }
        
        .ribbon {
            position: absolute;
            top: 15px;
            right: -35px;
            background: var(--warning);
            color: var(--dark);
            padding: 8px 40px;
            transform: rotate(45deg);
            font-weight: 600;
            font-size: 14px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        
        .resource-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 25px;
            padding-bottom: 25px;
            border-bottom: 1px solid #eee;
        }
        
        .resource-title {
            font-size: 32px;
            color: var(--dark);
            margin-bottom: 15px;
            line-height: 1.3;
        }
        
        .resource-subtitle {
            color: var(--secondary);
            font-size: 18px;
            margin-bottom: 15px;
        }
        
        .resource-meta {
            display: flex;
            gap: 20px;
            color: var(--gray);
            font-size: 15px;
            flex-wrap: wrap;
        }
        
        .resource-meta span {
            display: flex;
            align-items: center;
        }
        
        .resource-meta i {
            margin-right: 8px;
            color: var(--secondary);
        }
        
        .rating {
            color: #f39c12;
        }
        
        .resource-tags {
            display: flex;
            gap: 10px;
            margin: 20px 0;
            flex-wrap: wrap;
        }
        
        .tag {
            background: linear-gradient(135deg, #e9f5ff, #d4e8ff);
            color: var(--secondary);
            padding: 8px 15px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            border: 1px solid #cde1ff;
        }
        
        .tag.highlight {
            background: linear-gradient(135deg, #fff8e1, #ffecb3);
            color: #d39e00;
            border-color: #ffe082;
        }
        
        .resource-preview {
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            border-radius: 10px;
            padding: 25px;
            text-align: center;
            margin-bottom: 30px;
            height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            border: 1px solid #eaeaea;
            position: relative;
            overflow: hidden;
        }
        
        .preview-image {
            max-width: 100%;
            max-height: 350px;
            object-fit: contain;
            border-radius: 6px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        
        .preview-controls {
            position: absolute;
            bottom: 20px;
            left: 0;
            right: 0;
            display: flex;
            justify-content: center;
            gap: 10px;
        }
        
        .preview-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: white;
            border: none;
            box-shadow: 0 2px 8px rgba(0,0,0,0.15);
            color: var(--secondary);
            font-size: 18px;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .preview-btn:hover {
            background: var(--secondary);
            color: white;
            transform: translateY(-3px);
        }
        
        /* 下载参数区域 */
        .download-params {
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            border-radius: 10px;
            padding: 25px;
            margin-bottom: 30px;
            border: 1px solid #eaeaea;
        }
        
        .params-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
        }
        
        .param-card {
            background: white;
            border-radius: 8px;
            padding: 20px;
            display: flex;
            align-items: center;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            transition: all 0.3s;
        }
        
        .param-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        
        .param-icon {
            width: 60px;
            height: 60px;
            background: #e9f5ff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 20px;
            color: var(--secondary);
            font-size: 24px;
        }
        
        .param-info {
            flex: 1;
        }
        
        .param-label {
            color: var(--gray);
            font-size: 14px;
            margin-bottom: 5px;
        }
        
        .param-value {
            font-weight: 700;
            font-size: 18px;
            color: var(--dark);
        }
        
        .btn-download {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            padding: 15px;
            background: linear-gradient(135deg, var(--success), #1e7e34);
            color: white;
            border-radius: 8px;
            font-weight: 700;
            font-size: 18px;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(40, 167, 69, 0.3);
            margin-top: 20px;
			text-decoration: none;
        }
        
        .btn-download:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(40, 167, 69, 0.4);
			text-decoration: none;
        }
        
        .btn-download i {
            margin-right: 10px;
            font-size: 20px;
        }
        
        .resource-description {
            margin: 35px 0;
        }
        
        .section-title {
            font-size: 24px;
            color: var(--dark);
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 2px solid #f0f4f8;
            display: flex;
            align-items: center;
        }
        
        .section-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;
        }
        
        /* 相关资源推荐 */
        .related-resources-section {
            margin: 50px 0 30px;
        }
        
        .resources-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 25px;
            margin-top: 20px;
        }
        
        .resource-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: all 0.3s;
        }
        
        .resource-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }
        
        .resource-thumb {
            height: 180px;
            background: linear-gradient(135deg, #f0f4f8, #e2e8f0);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 48px;
        }
        
        .resource-card-content {
            padding: 20px;
        }
        
        .resource-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
            height: 50px;
            overflow: hidden;
        }
        
        .resource-card-meta {
            display: flex;
            justify-content: space-between;
            color: var(--gray);
            font-size: 14px;
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid #eee;
        }
        
        .resource-card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .resource-card-downloads {
            color: var(--secondary);
            font-weight: 600;
        }
        
        .resource-card-btn {
            background: var(--secondary);
            color: white;
            border: none;
            padding: 8px 15px;
            border-radius: 4px;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .resource-card-btn:hover {
            background: #1e5a80;
        }
        
        /* 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;
        }
        
        .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);
        }
        
        /* 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;
        }
        
        .author-info {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .author-avatar {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: bold;
            margin-right: 15px;
        }
        
        .author-name {
            font-weight: 700;
            margin-bottom: 5px;
            font-size: 18px;
        }
        
        .author-stats {
            color: var(--gray);
            font-size: 14px;
        }
        
        .btn-contact {
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            color: white;
            padding: 12px;
            border-radius: 6px;
            text-decoration: none;
            margin-top: 15px;
            font-weight: 600;
            transition: all 0.3s;
        }
        
        .btn-contact:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(44, 110, 155, 0.3);
        }
        
        .btn-contact i {
            margin-right: 8px;
        }
        
        /* 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;
         
          
        }
         

		.daohangt a {
            color: #bdc3c7;
           
           text-align: center;
         
          
        }
        
        

        .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) {
            .nav-menu {
                flex-wrap: wrap;
                justify-content: flex-start;
            }
            
            .nav-item {
                padding: 10px 0;
            }
            
            .nav-item > a {
                padding: 10px 15px;
                font-size: 15px;
            }
        }
        
        @media (max-width: 992px) {
            .main-content {
                flex-direction: column;
            }
            
            .header-content {
                flex-wrap: wrap;
            }
            
            .search-box {
                order: 3;
                max-width: 100%;
                margin: 15px 0;
            }
            
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 768px) {
            .resource-preview {
                height: 300px;
            }
            
            .params-grid {
                grid-template-columns: 1fr;
            }
            
            .resources-grid {
                grid-template-columns: 1fr;
            }
            
            .resource-header {
                flex-direction: column;
                gap: 20px;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
            
            .top-bar-content {
                flex-direction: column;
                gap: 8px;
            }
            
            .nav-menu {
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: 5px;
            }




 .linka a {
            color: #e0e6ed;
            text-decoration: none;
           
        }
        
        .linka a:hover {
            text-decoration: none;
        }
        





			 .user-actions {
                display: none !important;
            }
 .logo {
                display: none !important;
            }
 .btn {
                display: none !important;
            }


        }