.content {
            flex: 1;
            padding: 40px;
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
        }
        
        
        /* 页脚样式 */
        footer {
            background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
            color: #fff;
            padding: 60px 0 30px;
            margin-top: auto;
        }
        
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }
        
        .footer-section h3 {
            font-size: 1.4rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-section h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 2px;
            background: #3498db;
        }
        
        .footer-section p {
            line-height: 1.8;
            margin-bottom: 20px;
            color: #ecf0f1;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            color: #ecf0f1;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-block;
        }
        
        .footer-links a:hover {
            color: #3498db;
            transform: translateX(5px);
        }
        
        .contact-info {
            list-style: none;
        }
        
        .contact-info li {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
        }
        
        .contact-info i {
            margin-right: 10px;
            color: #3498db;
            font-size: 1.2rem;
            width: 20px;
        }
        
        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            color: #fff;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .social-links a:hover {
            background: #3498db;
            transform: translateY(-5px);
        }
        
        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            text-align: center;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 40px;
            color: #bdc3c7;
            font-size: 0.9rem;
        }
        
        .footer-bottom a {
            color: #3498db;
            text-decoration: none;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .footer-container {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            
            .footer-section {
                text-align: center;
            }
            
            .footer-section h3::after {
                left: 50%;
                transform: translateX(-50%);
            }
            
            .social-links {
                justify-content: center;
            }
        }