:root {
            --primary-color: #1a365d;
            --secondary-color: #d4af37;
            --accent-color: #2c5282;
            --light-color: #f8fafc;
            --dark-color: #2d3748;
            --gray-color: #e2e8f0;
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: var(--light-color);
            color: var(--dark-color);
            line-height: 1.6;
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 导航栏样式 */
        header {
            background-color: var(--primary-color);
            color: white;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo img {
            height: 40px;
            margin-right: 10px;
        }
        
        .logo h1 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--secondary-color);
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin: 0 15px;
        }
        
        nav ul li a {
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            padding: 5px 0;
        }
        
        nav ul li a:hover {
            color: var(--secondary-color);
        }
        
        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--secondary-color);
            transition: var(--transition);
        }
        
        nav ul li a:hover::after {
            width: 100%;
        }
        
        .phone {
            display: flex;
            align-items: center;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--secondary-color);
        }
        
        .phone i {
            margin-right: 10px;
            font-size: 1.5rem;
        }
        
        
        /* 底部区域 */
        footer {
            background-color: var(--primary-color);
            color: white;
            padding: 60px 0 30px;
        }
        
        .footer-content {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-column {
            flex: 1;
            min-width: 250px;
        }
        
        .footer-column h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--secondary-color);
        }
        
        .footer-column ul {
            list-style: none;
        }
        
        .footer-column ul li {
            margin-bottom: 10px;
        }
        
        .footer-column ul li a {
            transition: var(--transition);
        }
        
        .footer-column ul li a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }
        
        .qrcode {
            text-align: center;
        }
        
        .qrcode img {
            width: 150px;
            margin-bottom: 10px;
            border: 5px solid white;
        }
        
        .friends-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            justify-content: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .friends-links a {
            color: #e2e8f0;
            transition: var(--transition);
        }
        
        .friends-links a:hover {
            color: var(--secondary-color);
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            color: #cbd5e0;
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .about-content {
                flex-direction: column;
            }
            
            .process-steps {
                flex-direction: column;
                gap: 40px;
            }
            
            .process-steps::before {
                display: none;
            }
            
            .header-container {
                flex-direction: column;
                padding: 15px 20px;
            }
            
            nav ul {
                margin: 15px 0;
            }
            
            .hero-slider {
                margin-top: 130px;
                height: 400px;
            }
            
            .slide-content {
                margin-left: 5%;
            }
        }
        
        @media (max-width: 768px) {
            nav ul {
                flex-wrap: wrap;
                justify-content: center;
            }
            
            nav ul li {
                margin: 5px 10px;
            }
            
            .slide-content h2 {
                font-size: 2rem;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .hero-slider {
                height: 350px;
            }
        }
        
        @media (max-width: 576px) {
            .slide-content {
                padding: 20px;
            }
            
            .slide-content h2 {
                font-size: 1.5rem;
            }
            
            .slide-content p {
                font-size: 1rem;
            }
            
            .btn {
                padding: 10px 20px;
            }
            
            .services-grid,
            .articles-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-content {
                flex-direction: column;
            }
        }