/* 使用独特前缀避免样式冲突 */
        .site-footer {
            background: linear-gradient(135deg, #1a2a4c 0%, #0d1b2a 100%);
            color: #e0e1dd;
            padding: 50px 0 20px;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            position: relative;
            overflow: hidden;
        }
        
        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, #ff6b6b, #48cae4, #9d4edd);
        }
        
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            padding: 0 20px;
        }
        
        .footer-col {
            flex: 1;
            min-width: 200px;
            margin-bottom: 30px;
            padding: 0 15px;
        }
        
        .footer-col-title {
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 2px solid #415a77;
            position: relative;
        }
        
        .footer-col-title::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 50px;
            height: 2px;
            background: #48cae4;
        }
        
        .footer-links {
            list-style: none;
            padding: 0;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            color: #e0e1dd;
            text-decoration: none;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
        }
        
        .footer-links a:hover {
            color: #48cae4;
            transform: translateX(5px);
        }
        
        .footer-links i {
            margin-right: 10px;
            color: #ff6b6b;
            font-size: 0.9rem;
        }
        
        .footer-about {
            line-height: 1.8;
            font-size: 0.95rem;
        }
        
        .footer-contact p {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }
        
        .footer-contact i {
            margin-right: 15px;
            font-size: 1.2rem;
            color: #ff6b6b;
            min-width: 20px;
        }
        
        .footer-social {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        
        .social-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 1.2rem;
            transition: all 0.3s ease;
        }
        
        .social-icon:hover {
            background: #ff6b6b;
            transform: translateY(-5px);
        }
        
        .copyright-bar {
            background: rgba(0, 0, 0, 0.2);
            padding: 20px 0;
            text-align: center;
            margin-top: 40px;
            font-size: 0.9rem;
        }
        
        .copyright-bar p {
            margin: 5px 0;
        }
        
        .copyright-bar a {
            color: #48cae4;
            text-decoration: none;
            transition: all 0.3s;
        }
        
        .copyright-bar a:hover {
            color: #ff6b6b;
            text-decoration: underline;
        }
        
        .footer-logo {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .footer-logo-icon {
            font-size: 2rem;
            color: #ff6b6b;
            margin-right: 10px;
        }
        
        .footer-logo-text {
            font-size: 1.5rem;
            font-weight: bold;
            background: linear-gradient(90deg, #ff6b6b, #48cae4);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .back-to-top {
            position: absolute;
            top: -25px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #ff6b6b, #9d4edd);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            transition: all 0.3s ease;
        }
        
        .back-to-top:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .footer-container {
                flex-direction: column;
            }
            
            .footer-col {
                min-width: 100%;
            }
            
            .back-to-top {
                right: 20px;
                top: -20px;
                width: 40px;
                height: 40px;
                font-size: 1.2rem;
            }
        }