/* 全局样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Microsoft YaHei', Arial, sans-serif;
        }
        
        body {
            line-height: 1.6;
            color: #333;
        }
        
        a {
            text-decoration: none;
            color: #333;
        }
        
        ul {
            list-style: none;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        .btn {
            display: inline-block;
            padding: 10px 20px;
            background: #0066cc;
            color: white;
            border-radius: 4px;
            transition: all 0.3s;
        }
        
        .btn:hover {
            background: #0055aa;
        }
        
        /* 导航栏 */
        header {
            background: white;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: fixed;
            width: 100%;
            z-index: 1000;
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logo {
            font-size: 24px;
            font-weight: bold;
        }
        
        .logo span {
            color: #0066cc;
        }
        
        .nav-links {
            display: flex;
        }
        
        .nav-links li {
            margin-left: 30px;
        }
        
        .nav-links a {
            font-weight: 500;
            transition: color 0.3s;
        }
        
        .nav-links a:hover {
            color: #0066cc;
        }
        
        .mobile-menu-btn {
            display: none;
            font-size: 24px;
            cursor: pointer;
        }
        
        /* 英雄区域 */
        .hero {
            height: 100vh;
            background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://via.placeholder.com/1920x1080');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            text-align: center;
            color: white;
            padding-top: 80px;
        }
        
        .hero-content {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .hero h1 {
            font-size: 48px;
            margin-bottom: 20px;
        }
        
        .hero p {
            font-size: 20px;
            margin-bottom: 30px;
        }
        
        /* 关于我们 */
        .about {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .section-title h2 {
            font-size: 36px;
            color: #0066cc;
            margin-bottom: 15px;
        }
        
        .section-title p {
            color: #666;
            max-width: 700px;
            margin: 0 auto;
        }
        
        .about-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }
        
        .about-text {
            flex: 1;
        }
        
        .about-image {
            flex: 1;
        }
        
        .about-image img {
            width: 100%;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        /* 服务 */
        .services {
            padding: 80px 0;
            background: #f9f9f9;
        }
        
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }
        
        .service-card {
            background: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }
        
        .service-card:hover {
            transform: translateY(-10px);
        }
        
        .service-icon {
            font-size: 40px;
            color: #0066cc;
            margin-bottom: 20px;
        }
        
        .service-card h3 {
            margin-bottom: 15px;
        }
        
        /* 联系我们 */
        .contact {
            padding: 80px 0;
        }
        
        .contact-container {
            display: flex;
            gap: 50px;
        }
        
        .contact-info {
            flex: 1;
        }
        
        .contact-info h3 {
            margin-bottom: 20px;
        }
        
        .contact-info p {
            margin-bottom: 15px;
        }
        
        .contact-form {
            flex: 1;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 5px;
            font-weight: 500;
        }
        
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 4px;
        }
        
        .form-group textarea {
            height: 150px;
        }
        
        /* 页脚 */
        footer {
            background: #222;
            color: white;
            padding: 50px 0 20px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        
        .footer-column h3 {
            margin-bottom: 20px;
            font-size: 18px;
        }
        
        .footer-column ul li {
            margin-bottom: 10px;
        }
        
        .footer-column a {
            color: #bbb;
            transition: color 0.3s;
        }
        
        .footer-column a:hover {
            color: white;
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #444;
            color: #bbb;
            font-size: 14px;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .about-content {
                flex-direction: column;
            }
            
            .contact-container {
                flex-direction: column;
            }
        }
        
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            
            .nav-links {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 80px);
                background: white;
                flex-direction: column;
                align-items: center;
                padding-top: 30px;
                transition: left 0.3s;
            }
            
            .nav-links.active {
                left: 0;
            }
            
            .nav-links li {
                margin: 15px 0;
            }
            
            .hero h1 {
                font-size: 36px;
            }
            
            .hero p {
                font-size: 18px;
            }
        }