* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 导航样式 */
        header {
            background-color: #fff;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logo {
            font-size: 24px;
            font-weight: 700;
            color: #2c3e50;
            text-decoration: none;
        }
        
        .logo span {
            color: #3498db;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 30px;
        }
        
        nav ul li a {
            text-decoration: none;
            color: #2c3e50;
            font-weight: 600;
            font-size: 16px;
            transition: color 0.3s;
        }
        
        nav ul li a:hover {
            color: #3498db;
        }
        
        .mobile-menu-btn {
            display: none;
            font-size: 24px;
            cursor: pointer;
            color: #2c3e50;
        }
        
        /* 首页Banner样式 */
        #home {
            padding-top: 120px;
            padding-bottom: 80px;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
        }
        
        .hero-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }
        
        .hero-text {
            flex: 1;
        }
        
        .hero-text h1 {
            font-size: 42px;
            color: #2c3e50;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        
        .hero-text p {
            font-size: 18px;
            color: #555;
            margin-bottom: 30px;
        }
        
        .cta-button {
            display: inline-block;
            background-color: #3498db;
            color: white;
            padding: 14px 32px;
            border-radius: 5px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            transition: background-color 0.3s, transform 0.3s;
        }
        
        .cta-button:hover {
            background-color: #2980b9;
            transform: translateY(-3px);
        }
        
        .hero-image {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        
        .hero-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        
        /* 通用内容区域样式 */
        section {
            padding: 80px 0;
        }
        
        section:nth-child(even) {
            background-color: #fff;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .section-title h2 {
            font-size: 36px;
            color: #2c3e50;
            margin-bottom: 15px;
        }
        
        .section-title p {
            color: #7f8c8d;
            font-size: 18px;
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* 关于我们样式 */
        .about-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }
        
        .about-text {
            flex: 1;
        }
        
        .about-text h3 {
            font-size: 28px;
            color: #2c3e50;
            margin-bottom: 20px;
        }
        
        .about-text p {
            margin-bottom: 20px;
            color: #555;
        }
        
        .about-stats {
            display: flex;
            justify-content: space-between;
            margin-top: 30px;
        }
        
        .stat-item {
            text-align: center;
        }
        
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: #3498db;
            display: block;
        }
        
        .stat-label {
            color: #7f8c8d;
            font-size: 16px;
        }
        
        .about-image {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        
        .about-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        
        /* 公司动态样式 */
        .news-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .news-item {
            background-color: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .news-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .news-image {
            height: 200px;
            overflow: hidden;
        }
        
        .news-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .news-item:hover .news-image img {
            transform: scale(1.05);
        }
        
        .news-content {
            padding: 25px;
        }
        
        .news-date {
            color: #3498db;
            font-size: 14px;
            margin-bottom: 10px;
            display: block;
        }
        
        .news-content h3 {
            font-size: 20px;
            color: #2c3e50;
            margin-bottom: 15px;
            line-height: 1.4;
        }
        
        .news-content p {
            color: #666;
            margin-bottom: 15px;
        }
        
        .news-link {
            color: #3498db;
            text-decoration: none;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
        }
        
        .news-link i {
            margin-left: 5px;
            transition: transform 0.3s;
        }
        
        .news-link:hover i {
            transform: translateX(5px);
        }
        
        /* 公司业务样式 */
        .services-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
        }
        
        .service-item {
            background-color: #fff;
            padding: 40px 30px;
            border-radius: 8px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .service-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .service-icon {
            width: 80px;
            height: 80px;
            background-color: #f1f9ff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: #3498db;
            font-size: 32px;
        }
        
        .service-item h3 {
            font-size: 22px;
            color: #2c3e50;
            margin-bottom: 15px;
        }
        
        .service-item p {
            color: #666;
        }
        
        /* 联系我们样式 */
        .contact-container {
            display: flex;
            gap: 50px;
        }
        
        .contact-info {
            flex: 1;
        }
        
        .contact-form {
            flex: 1;
        }
        
        .contact-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 30px;
        }
        
        .contact-icon {
            width: 50px;
            height: 50px;
            background-color: #f1f9ff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 20px;
            color: #3498db;
            font-size: 20px;
        }
        
        .contact-details h4 {
            font-size: 20px;
            color: #2c3e50;
            margin-bottom: 8px;
        }
        
        .contact-details p {
            color: #666;
        }
        
        .form-group {
            margin-bottom: 25px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #2c3e50;
            font-weight: 600;
        }
        
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 14px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-family: inherit;
            font-size: 16px;
            transition: border-color 0.3s;
        }
        
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: #3498db;
        }
        
        .form-group textarea {
            height: 150px;
            resize: vertical;
        }
        
        .submit-btn {
            background-color: #3498db;
            color: white;
            border: none;
            padding: 16px 32px;
            border-radius: 5px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s;
            width: 100%;
        }
        
        .submit-btn:hover {
            background-color: #2980b9;
        }
        
        /* 页脚样式 */
        footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 70px 0 30px;
        }
        
        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            margin-bottom: 50px;
        }
        
        .footer-column {
            flex: 1;
            min-width: 250px;
            margin-bottom: 30px;
        }
        
        .footer-column h3 {
            font-size: 20px;
            margin-bottom: 25px;
            color: #fff;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 3px;
            background-color: #3498db;
        }
        
        .footer-column p {
            margin-bottom: 20px;
            line-height: 1.8;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: #3498db;
        }
        
        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        
        .social-links a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            text-decoration: none;
            transition: background-color 0.3s, transform 0.3s;
        }
        
        .social-links a:hover {
            background-color: #3498db;
            transform: translateY(-3px);
        }
        
        .friend-links {
            background-color: rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 5px;
            margin-top: 20px;
        }
        
        .friend-links h4 {
            margin-bottom: 15px;
            color: #fff;
        }
        
        .friend-links ul {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }
        
        .friend-links a {
            color: #bdc3c7;
            text-decoration: none;
            padding: 5px 10px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 3px;
            transition: all 0.3s;
        }
        
        .friend-links a:hover {
            color: #3498db;
            border-color: #3498db;
        }
        
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #95a5a6;
            font-size: 14px;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero-content,
            .about-content,
            .contact-container {
                flex-direction: column;
            }
            
            .hero-text h1 {
                font-size: 36px;
            }
            
            .section-title h2 {
                font-size: 32px;
            }
        }
        
        @media (max-width: 768px) {
            nav ul {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #fff;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
            }
            
            nav ul.active {
                display: flex;
            }
            
            nav ul li {
                margin: 10px 0;
                margin-left: 0;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            #home {
                padding-top: 100px;
            }
            
            .hero-text h1 {
                font-size: 32px;
            }
            
            .section-title h2 {
                font-size: 28px;
            }
            
            .footer-container {
                flex-direction: column;
            }
        }