:root {
            --primary-green: #27ae60;
            --secondary-green: #2ecc71;
            --light-green: #d5f4e6;
            --primary-purple: #8e44ad;
            --secondary-purple: #9b59b6;
            --light-purple: #f0e6f5;
            --dark-gray: #333;
            --medium-gray: #666;
            --light-gray: #f5f5f5;
            --white: #ffffff;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            color: var(--dark-gray);
            line-height: 1.6;
            background-color: var(--white);
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 头部样式 */
        header {
            background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-purple) 100%);
            color: var(--white);
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow);
        }
        
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .logo i {
            font-size: 2.5rem;
        }
        
        .logo-text h1 {
            font-size: 1.8rem;
            margin-bottom: 5px;
        }
        
        .logo-text p {
            font-size: 0.9rem;
            opacity: 0.9;
        }
        
        /* 桌面导航样式 */
        .desktop-nav {
            display: block;
        }
        
        .desktop-nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        
        .desktop-nav a {
            color: var(--white);
            text-decoration: none;
            font-weight: 500;
            font-size: 1.1rem;
            transition: var(--transition);
            padding: 5px 10px;
            border-radius: 4px;
        }
        
        .desktop-nav a:hover {
            background-color: rgba(255, 255, 255, 0.2);
        }
        
        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--white);
            font-size: 1.5rem;
            cursor: pointer;
            z-index: 1002;
        }
        
        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.9);
            z-index: 1001;
            justify-content: center;
            align-items: center;
            text-align: center;
        }
        
        .mobile-menu.active {
            display: flex;
        }
        
        .mobile-menu ul {
            list-style: none;
            padding: 0;
        }
        
        .mobile-menu li {
            margin-bottom: 30px;
        }
        
        .mobile-menu a {
            color: var(--white);
            text-decoration: none;
            font-size: 1.8rem;
            font-weight: 500;
            padding: 10px 20px;
            display: inline-block;
            transition: var(--transition);
            border-radius: 8px;
        }
        
        .mobile-menu a:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }
        
        .close-menu-btn {
            position: absolute;
            top: 20px;
            right: 20px;
            background: none;
            border: none;
            color: var(--white);
            font-size: 2rem;
            cursor: pointer;
        }
        
        /* 主横幅 */
        .hero {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1556742049-0cfed4f6a45d?ixlib=rb-4.0.3&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            color: var(--white);
            padding: 100px 0;
            text-align: center;
        }
        
        .hero h2 {
            font-size: 3rem;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }
        
        .hero p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        
        .cta-button {
            display: inline-block;
            background: linear-gradient(to right, var(--primary-green), var(--primary-purple));
            color: var(--white);
            padding: 15px 35px;
            font-size: 1.2rem;
            font-weight: 600;
            text-decoration: none;
            border-radius: 50px;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        
        .cta-button:hover {
            transform: translateY(-5px);
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
        }
        
        /* 主要部分样式 */
        section {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
            position: relative;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            color: var(--dark-gray);
            margin-bottom: 15px;
            display: inline-block;
        }
        
        .section-title h2:after {
            content: '';
            position: absolute;
            width: 80px;
            height: 4px;
            background: linear-gradient(to right, var(--primary-green), var(--primary-purple));
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }
        
        .section-title p {
            color: var(--medium-gray);
            max-width: 700px;
            margin: 20px auto 0;
        }
        
        /* 公司介绍 */
        .about-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }
        
        .about-text {
            flex: 1;
        }
        
        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--primary-purple);
        }
        
        .about-text p {
            margin-bottom: 20px;
            color: var(--medium-gray);
        }
        
        .about-features {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 30px;
        }
        
        .feature {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .feature i {
            background: var(--light-purple);
            color: var(--primary-purple);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
        }
        
        .about-image {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        
        .about-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        
        /* 产品展示 */
        .products {
            background-color: var(--light-gray);
        }
        
        .product-categories {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        
        .category-btn {
            padding: 10px 25px;
            background-color: var(--white);
            border: 2px solid var(--primary-green);
            color: var(--primary-green);
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .category-btn:hover, .category-btn.active {
            background-color: var(--primary-green);
            color: var(--white);
        }
        
        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
        }
        
        .product-card {
            background-color: var(--white);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .product-img {
            height: 200px;
            overflow: hidden;
        }
        
        .product-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        
        .product-card:hover .product-img img {
            transform: scale(1.05);
        }
        
        .product-info {
            padding: 20px;
        }
        
        .product-category {
            display: inline-block;
            padding: 5px 12px;
            background-color: var(--light-purple);
            color: var(--primary-purple);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        
        .product-name {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: var(--dark-gray);
        }
        
        .product-desc {
            color: var(--medium-gray);
            font-size: 0.95rem;
            margin-bottom: 15px;
        }
        
        /* 服务样式 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .service-card {
            background-color: var(--white);
            padding: 40px 30px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
            border-top: 5px solid var(--primary-green);
        }
        
        .service-card:hover {
            border-top-color: var(--primary-purple);
            transform: translateY(-10px);
        }
        
        .service-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 25px;
            background: linear-gradient(135deg, var(--primary-green), var(--primary-purple));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-size: 2rem;
        }
        
        .service-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--dark-gray);
        }
        
        .service-card p {
            color: var(--medium-gray);
        }
        
        /* 联系样式 */
        .contact {
            background-color: var(--light-gray);
        }
        
        .contact-content {
            display: flex;
            gap: 50px;
        }
        
        .contact-info {
            flex: 1;
        }
        
        .contact-form {
            flex: 1;
        }
        
        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            margin-bottom: 30px;
        }
        
        .contact-icon {
            width: 60px;
            height: 60px;
            background-color: var(--light-purple);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-purple);
            font-size: 1.5rem;
            flex-shrink: 0;
        }
        
        .contact-details h3 {
            font-size: 1.3rem;
            margin-bottom: 5px;
            color: var(--dark-gray);
        }
        
        .contact-details p {
            color: var(--medium-gray);
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark-gray);
        }
        
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }
        
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--primary-green);
            outline: none;
        }
        
        .submit-btn {
            background: linear-gradient(to right, var(--primary-green), var(--primary-purple));
            color: var(--white);
            border: none;
            padding: 15px 30px;
            font-size: 1.1rem;
            font-weight: 600;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
        }
        
        .submit-btn:hover {
            opacity: 0.9;
        }
        
        /* 页脚样式 */
        footer {
            background-color: var(--dark-gray);
            color: var(--white);
            padding: 60px 0 30px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-column h3 {
            font-size: 1.5rem;
            margin-bottom: 25px;
            color: var(--white);
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h3:after {
            content: '';
            position: absolute;
            width: 50px;
            height: 3px;
            background: linear-gradient(to right, var(--primary-green), var(--primary-purple));
            bottom: 0;
            left: 0;
            border-radius: 2px;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 15px;
        }
        
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: var(--transition);
        }
        
        .footer-links a:hover {
            color: var(--primary-green);
            padding-left: 5px;
        }
        
        /* 免责声明和隐私条款样式 */
        .legal-links {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin: 20px 0;
            flex-wrap: wrap;
        }
        
        .legal-link {
            color: #bbb;
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
            cursor: pointer;
            padding: 5px 10px;
            border-radius: 4px;
        }
        
        .legal-link:hover {
            color: var(--primary-green);
            background-color: rgba(255, 255, 255, 0.05);
        }
        
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #444;
            color: #bbb;
            font-size: 0.9rem;
        }
        
        /* 模态框样式 */
        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 1100;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        .modal-overlay.active {
            display: flex;
        }
        
        .modal {
            background-color: var(--white);
            border-radius: 10px;
            max-width: 800px;
            width: 100%;
            max-height: 80vh;
            overflow-y: auto;
            box-shadow: var(--shadow);
            position: relative;
        }
        
        .modal-header {
            background: linear-gradient(to right, var(--primary-green), var(--primary-purple));
            color: var(--white);
            padding: 20px 30px;
            border-radius: 10px 10px 0 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .modal-header h3 {
            font-size: 1.5rem;
            margin: 0;
        }
        
        .close-modal {
            background: none;
            border: none;
            color: var(--white);
            font-size: 1.8rem;
            cursor: pointer;
            line-height: 1;
            transition: var(--transition);
        }
        
        .close-modal:hover {
            transform: scale(1.2);
        }
        
        .modal-content {
            padding: 30px;
            color: var(--dark-gray);
            line-height: 1.8;
        }
        
        .modal-content h4 {
            color: var(--primary-purple);
            margin: 25px 0 10px;
            font-size: 1.2rem;
        }
        
        .modal-content p {
            margin-bottom: 15px;
        }
        
        .modal-content ul {
            margin-left: 20px;
            margin-bottom: 15px;
        }
        
        .modal-content li {
            margin-bottom: 8px;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .about-content {
                flex-direction: column;
            }
            
            .contact-content {
                flex-direction: column;
            }
            
            .hero h2 {
                font-size: 2.5rem;
            }
        }
        
        @media (max-width: 768px) {
            /* 隐藏桌面导航，显示移动菜单按钮 */
            .desktop-nav {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .hero {
                padding: 80px 0;
            }
            
            .hero h2 {
                font-size: 2rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
            
            section {
                padding: 60px 0;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .services-grid {
                grid-template-columns: 1fr;
            }
            
            .modal {
                max-height: 90vh;
            }
        }
        
        @media (max-width: 576px) {
            .about-features {
                grid-template-columns: 1fr;
            }
            
            .products-grid {
                grid-template-columns: 1fr;
            }
            
            .product-categories {
                flex-direction: column;
                align-items: center;
            }
            
            .category-btn {
                width: 80%;
            }
            
           
        }