* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        :root {
            --primary-color: #2563eb;
            --secondary-color: #3b82f6;
            --dark-color: #1e293b;
            --light-color: #f8fafc;
            --gray-color: #64748b;
            --transition: all 0.3s ease;
        }
        
        body {
            line-height: 1.6;
            color: #333;
            background-color: #fff;
            overflow-x: hidden;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 导航栏 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
        }
        
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }
        
        .logo {
            display: flex;
            align-items: center;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        
        .logo i {
            margin-right: 10px;
            font-size: 2rem;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 30px;
        }
        
        .nav-links a {
            text-decoration: none;
            color: var(--dark-color);
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        
        .nav-links a:hover {
            color: var(--primary-color);
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--primary-color);
            left: 0;
            bottom: -5px;
            transition: var(--transition);
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .nav-btn {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 10px 25px;
            border-radius: 5px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .nav-btn:hover {
            background-color: var(--secondary-color);
            transform: translateY(-2px);
        }
        
        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        /* 英雄区域 */
        .hero {
            padding: 180px 0 100px;
            background: linear-gradient(135deg, #f0f7ff 0%, #e6f0ff 100%);
            position: relative;
            overflow: hidden;
        }
        
        .hero-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        
        .hero-text {
            flex: 1;
            max-width: 600px;
        }
        
        .hero-text h1 {
            font-size: 3.2rem;
            line-height: 1.2;
            color: var(--dark-color);
            margin-bottom: 20px;
        }
        
        .hero-text p {
            font-size: 1.2rem;
            color: var(--gray-color);
            margin-bottom: 30px;
        }
        
        .hero-btns {
            display: flex;
            gap: 20px;
        }
        
        .btn {
            padding: 14px 32px;
            border-radius: 5px;
            font-weight: 500;
            text-decoration: none;
            display: inline-block;
            transition: var(--transition);
        }
        
        .btn-primary {
            background-color: var(--primary-color);
            color: white;
        }
        
        .btn-primary:hover {
            background-color: var(--secondary-color);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
        }
        
        .btn-secondary {
            background-color: transparent;
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
        }
        
        .btn-secondary:hover {
            background-color: rgba(37, 99, 235, 0.05);
            transform: translateY(-3px);
        }
        
        .hero-image {
            flex: 1;
            text-align: center;
        }
        
        .hero-image img {
            max-width: 100%;
            border-radius: 10px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        }
        
        /* 服务区域 */
        .services {
            padding: 100px 0;
            background-color: white;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            color: var(--dark-color);
            margin-bottom: 15px;
        }
        
        .section-title p {
            color: var(--gray-color);
            max-width: 600px;
            margin: 0 auto;
        }
        
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        
        .service-card {
            background-color: white;
            border-radius: 10px;
            padding: 40px 30px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
            border: 1px solid #f1f5f9;
        }
        
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .service-icon {
            width: 70px;
            height: 70px;
            background-color: #e0f2fe;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: var(--primary-color);
            font-size: 1.8rem;
        }
        
        .service-card h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: var(--dark-color);
        }
        
        .service-card p {
            color: var(--gray-color);
            margin-bottom: 20px;
        }
        
        /* 项目展示区域 */
        .projects {
            padding: 80px 0;
            background-color: #f8fafc;
        }
        
        .projects-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }
        
        .project-card {
            background-color: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        
        .project-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .project-img {
            height: 200px;
            background-color: #e2e8f0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 3rem;
        }
        
        .project-content {
            padding: 25px;
        }
        
        .project-content h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: var(--dark-color);
        }
        
        .project-content p {
            color: var(--gray-color);
            font-size: 0.95rem;
        }
        
        /* 行动号召区域 */
        .cta {
            padding: 100px 0;
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            color: white;
            text-align: center;
        }
        
        .cta h2 {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }
        
        .cta p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 40px;
            opacity: 0.9;
        }
        
        .cta .btn {
            background-color: white;
            color: var(--primary-color);
            font-weight: 600;
        }
        
        .cta .btn:hover {
            background-color: #f1f5f9;
            transform: translateY(-3px);
        }
        
        /* 页脚 */
        footer {
            background-color: var(--dark-color);
            color: #cbd5e1;
            padding: 70px 0 30px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-column h3 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            width: 40px;
            height: 3px;
            background-color: var(--primary-color);
            left: 0;
            bottom: 0;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }
        
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        
        .contact-info {
            list-style: none;
        }
        
        .contact-info li {
            display: flex;
            align-items: flex-start;
            margin-bottom: 15px;
        }
        
        .contact-info i {
            margin-right: 10px;
            color: var(--primary-color);
            margin-top: 5px;
        }
        
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero-content {
                flex-direction: column;
                text-align: center;
            }
            
            .hero-text {
                margin-bottom: 50px;
            }
            
            .hero-text h1 {
                font-size: 2.8rem;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
            }
            
            .nav-links.active {
                display: flex;
            }
            
            .nav-links li {
                margin: 15px 0;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .hero {
                padding: 150px 0 80px;
            }
            
            .hero-text h1 {
                font-size: 2.2rem;
            }
            
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            
            .btn {
                width: 100%;
                max-width: 250px;
                text-align: center;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
        }