* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Microsoft YaHei', Arial, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            color: #333;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 20px;
            flex: 1;
        }
        
        .header {
            text-align: center;
            margin-bottom: 50px;
        }
        .site-description {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
    margin: 15px 0 25px;
    font-weight: normal;
    max-width: 600px;
    line-height: 1.5;
}
        .title {
            font-size: 3.5rem;
            color: white;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
            margin-bottom: 30px;
            font-weight: bold;
        }
        
        .btn-container {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 60px;
        }
        
        .btn {
            padding: 15px 40px;
            font-size: 1.2rem;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 500;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }
        
        .btn-login {
            background: white;
            color: #667eea;
        }
        
        .btn-login:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 20px rgba(0,0,0,0.3);
        }
        
        /* 选项卡样式 */
        .tabs {
            background: white;
            border-radius: 15px 15px 0 0;
            padding: 20px;
            margin-bottom: 0;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        
        .tab-buttons {
            display: flex;
            gap: 10px;
            margin-bottom: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .tab-btn {
            padding: 12px 25px;
            background: #f8f9fa;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1.1rem;
            font-weight: 500;
            color: #555;
            transition: all 0.3s ease;
        }
        
        .tab-btn.active {
            background: #667eea;
            color: white;
        }
        
        .tab-btn:hover:not(.active) {
            background: #e9ecef;
        }
        
        /* 文章列表样式 */
        .tab-content {
            display: none;
            padding: 30px;
            background: white;
            border-radius: 0 0 15px 15px;
            min-height: 300px;
        }
        
        .tab-content.active {
            display: block;
        }
        
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .article-item {
            border: 1px solid #e9ecef;
            border-radius: 10px;
            padding: 20px;
            background: #f8f9fa;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        
        .article-item:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            border-color: #667eea;
        }
        
        .article-title {
            font-size: 1.3rem;
            color: #333;
            margin-bottom: 10px;
            font-weight: 600;
        }
        
        .article-excerpt {
            color: #666;
            line-height: 1.6;
        }
        
        .footer {
            text-align: center;
            margin-top: 50px;
            padding: 20px;
            color: rgba(255,255,255,0.8);
            font-size: 0.9rem;
        }
        
        .beian {
            color: rgba(255,255,255,0.8);
            text-decoration: underline;
            cursor: pointer;
        }
        
        .beian:hover {
            color: white;
        }
        
        @media (max-width: 768px) {
            .title {
                font-size: 2.5rem;
            }
            
            .btn-container {
                flex-direction: column;
                align-items: center;
            }
            
            .tab-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .tab-btn {
                width: 100%;
                max-width: 300px;
                text-align: center;
            }
        }