* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf9 100%);
            min-height: 100vh;
            padding: 20px;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        .header {
            text-align: center;
            margin: 20px 0;
            color: #2c3e50;
        }
        
        .header h1 {
            font-size: 2.2rem;
            font-weight: 300;
            margin-bottom: 10px;
            background: linear-gradient(45deg, #3498db, #2c3e50);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        
        .header p {
            font-size: 1.0rem;
            color: #7f8c8d;
            max-width: 600px;
            line-height: 1.5;
        }
        
        .card-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 25px;
            width: 100%;
            max-width: 1200px;
            padding: 20px;
        }
        
        .card {
            background: rgba(255, 255, 255, 0.85);
            border-radius: 12px;
            padding: 20px;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
            display: flex;
            flex-direction: column;
            height: 110px; /* 缩小高度 */
            border-left: 4px solid #3498db;
            backdrop-filter: blur(5px);
        }
        
        .card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
            background: rgba(255, 255, 255, 0.95);
            border-left: 4px solid #e74c3c;
        }
        
        .card a {
            text-decoration: none;
            color: #2c3e50;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        
        .card h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin-bottom: 10px;
            flex-grow: 1;
        }
        
        .card p {
            color: #7f8c8d;
            font-size: 0.9rem;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .footer {
            margin-top: 15px;
            text-align: center;
            color: #7f8c8d;
            font-size: 0.9rem;
            padding: 10px;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .card-container {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
                gap: 20px;
            }
            
            .header h1 {
                font-size: 2.2rem;
            }
            
            .card {
                padding: 18px;
                height: 105px;
            }
        }
        
        @media (max-width: 480px) {
            .card-container {
                grid-template-columns: 1fr;
            }
            
            .header h1 {
                font-size: 1.8rem;
            }
            
            .header p {
                font-size: 1rem;
            }
            
            .card {
                height: 100px;
            }
        }