body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
                'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
                sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
            background-image: 
                linear-gradient(120deg, rgba(255,255,255,0.8) 0%, rgba(255,255,255,0.9) 100%),
                url('data:image/svg+xml;utf8,<svg width="100" height="100" viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none"/><path d="M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z" fill="%23e0e0e0" fill-opacity="0.1" fill-rule="evenodd"/></svg>');
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        
        /* 头部样式 */
        .header {
            background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
            color: white;
            padding: 60px 0;
            text-align: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            border-radius: 8px;
            margin-bottom: 40px;
        }
        
        .header h1 {
            font-size: 2.5rem;
            margin-bottom: 20px;
            font-weight: 700;
        }
        
        .header p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto;
            opacity: 0.9;
        }
        
        /* 导航样式 */
        .nav {
            background-color: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            margin-bottom: 30px;
        }
        
        .nav h2 {
            color: #2c3e50;
            margin-bottom: 20px;
            font-size: 1.8rem;
            border-bottom: 3px solid #3498db;
            padding-bottom: 10px;
        }
        
        .article-list {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 20px;
        }
        
        .article-card {
            background-color: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .article-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.15);
        }
        
        .article-card a {
            display: block;
            padding: 20px;
            text-decoration: none;
            color: #333;
        }
        
        .article-card h3 {
            color: #2c3e50;
            margin-bottom: 10px;
            font-size: 1.3rem;
            line-height: 1.4;
        }
        
        .article-card p {
            color: #7f8c8d;
            font-size: 0.95rem;
        }
        
        /* 内容区域样式 */
        .content-section {
            background-color: white;
            padding: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            margin-bottom: 40px;
        }
        
        .content-section h2 {
            color: #2c3e50;
            margin-bottom: 25px;
            font-size: 2rem;
            border-bottom: 3px solid #3498db;
            padding-bottom: 15px;
        }
        
        .content-section h3 {
            color: #34495e;
            margin-top: 30px;
            margin-bottom: 15px;
            font-size: 1.5rem;
        }
        
        .content-section p {
            margin-bottom: 20px;
            font-size: 1.05rem;
        }
        
        .content-section ul, .content-section ol {
            margin-bottom: 20px;
            padding-left: 25px;
        }
        
        .content-section li {
            margin-bottom: 10px;
        }
        
        /* 排名表格样式 */
        .ranking-table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            overflow-x: auto;
            display: block;
        }
        
        .ranking-table th, .ranking-table td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid #ddd;
        }
        
        .ranking-table th {
            background-color: #3498db;
            color: white;
            font-weight: 600;
        }
        
        .ranking-table tr:nth-child(even) {
            background-color: #f8f9fa;
        }
        
        .ranking-table tr:hover {
            background-color: #e9ecef;
        }
        
        /* 关键信息卡片 */
        .key-info {
            background-color: #e8f4fd;
            border-left: 4px solid #3498db;
            padding: 20px;
            margin: 25px 0;
            border-radius: 4px;
        }
        
        .key-info h4 {
            color: #2c3e50;
            margin-bottom: 10px;
            font-size: 1.2rem;
        }
        
        /* 评分指标 */
        .metrics {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin: 30px 0;
        }
        
        .metric-card {
            background-color: #f8f9fa;
            padding: 20px;
            border-radius: 8px;
            text-align: center;
            border: 1px solid #e0e0e0;
        }
        
        .metric-card h4 {
            color: #2c3e50;
            margin-bottom: 10px;
            font-size: 1.1rem;
        }
        
        .metric-card .value {
            font-size: 1.8rem;
            font-weight: bold;
            color: #3498db;
        }
        
       
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .header h1 {
                font-size: 2rem;
            }
            
            .content-section {
                padding: 20px;
            }
            
            .article-list {
                grid-template-columns: 1fr;
            }
            
            .metrics {
                grid-template-columns: 1fr;
            }
        }