/* 全局样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            line-height: 1.6;
            color: #333;
            background-color: #f9f9f9;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 头部与导航样式 */
        header {
            background-color: #fff;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logo {
            font-size: 28px;
            font-weight: 700;
            color: #1a5fb4;
            text-decoration: none;
        }
        
        .logo span {
            color: #ff7b00;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav li {
            margin-left: 30px;
        }
        
        nav a {
            text-decoration: none;
            color: #333;
            font-weight: 600;
            font-size: 16px;
            transition: color 0.3s;
            padding: 5px 0;
            position: relative;
        }
        
        nav a:hover {
            color: #1a5fb4;
        }
        
        nav a.active {
            color: #1a5fb4;
        }
        
        nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background-color: #1a5fb4;
        }
        
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: #333;
        }
        
        /* 主要内容区域 */
        main {
            padding-top: 20px;
        }
        
        section {
            padding: 80px 0;
            background-color: #fff;
            margin-bottom: 20px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        section:nth-child(even) {
            background-color: #f5f9ff;
        }
        
        h1, h2, h3 {
            margin-bottom: 20px;
            color: #1a5fb4;
        }
        
        h1 {
            font-size: 42px;
            line-height: 1.2;
        }
        
        h2 {
            font-size: 32px;
            border-left: 5px solid #ff7b00;
            padding-left: 15px;
            margin-bottom: 40px;
        }
        
        h3 {
            font-size: 24px;
            margin-top: 30px;
        }
        
        p {
            margin-bottom: 20px;
            font-size: 16px;
            color: #555;
        }
        
        /* 英雄区域 */
        .hero {
            background: linear-gradient(135deg, #1a5fb4 0%, #2c8cff 100%);
            color: white;
            padding: 100px 0;
            border-radius: 0;
            margin-bottom: 0;
            text-align: center;
        }
        
        .hero h1 {
            color: white;
            font-size: 48px;
            margin-bottom: 20px;
        }
        
        .hero p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 20px;
            max-width: 800px;
            margin: 0 auto 30px;
        }
        
        .cta-button {
            display: inline-block;
            background-color: #ff7b00;
            color: white;
            padding: 15px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 18px;
            transition: all 0.3s;
            border: 2px solid #ff7b00;
        }
        
        .cta-button:hover {
            background-color: transparent;
            color: #ff7b00;
        }
        
        /* 关于我们 */
        .about-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }
        
        .about-text {
            flex: 1;
        }
        
        .about-image {
            flex: 1;
            border-radius: 8px;
            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 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .news-item {
            background-color: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }
        
        .news-item:hover {
            transform: translateY(-10px);
        }
        
        .news-img {
            height: 200px;
            background-color: #e6f0ff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #1a5fb4;
            font-weight: bold;
        }
        
        .news-content {
            padding: 25px;
        }
        
        .news-date {
            color: #888;
            font-size: 14px;
            margin-bottom: 10px;
        }
        
        .news-title {
            font-size: 20px;
            margin-bottom: 15px;
            color: #1a5fb4;
        }
        
        /* 公司业务 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
            gap: 30px;
        }
        
        .service-item {
            background-color: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            text-align: center;
            transition: all 0.3s;
        }
        
        .service-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        
        .service-icon {
            font-size: 40px;
            color: #1a5fb4;
            margin-bottom: 20px;
        }
        
        /* 联系我们 */
        .contact-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
        }
        
        .contact-info {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }
        
        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }
        
        .contact-icon {
            font-size: 24px;
            color: #1a5fb4;
            width: 40px;
        }
        
        .contact-form {
            background-color: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #333;
        }
        
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 16px;
        }
        
        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }
        
        .submit-btn {
            background-color: #1a5fb4;
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 5px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        
        .submit-btn:hover {
            background-color: #0d4a9c;
        }
        
        /* 底部样式 */
        footer {
            background-color: #1a1f36;
            color: white;
            padding: 60px 0 30px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-logo {
            font-size: 24px;
            font-weight: 700;
            color: white;
            margin-bottom: 15px;
        }
        
        .footer-links h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 18px;
        }
        
        .footer-links ul {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: #b0b7c3;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: #ff7b00;
        }
        
        .friend-links {
            background-color: #252b42;
            padding: 20px;
            border-radius: 8px;
            margin-top: 20px;
        }
        
        .friend-links h4 {
            color: white;
            margin-bottom: 15px;
            font-size: 18px;
        }
        
        .friend-links ul {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 15px;
        }
        
        .friend-links a {
            color: #b0b7c3;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .friend-links a:hover {
            color: #ff7b00;
        }
        
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #2a3148;
            color: #b0b7c3;
            font-size: 14px;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .about-content {
                flex-direction: column;
            }
            
            .about-image {
                order: -1;
            }
            
            h1 {
                font-size: 36px;
            }
            
            h2 {
                font-size: 28px;
            }
        }
        
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            
            nav ul {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: white;
                flex-direction: column;
                align-items: center;
                padding: 20px 0;
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
                transform: translateY(-100%);
                opacity: 0;
                transition: all 0.3s;
                z-index: 999;
            }
            
            nav ul.active {
                transform: translateY(0);
                opacity: 1;
            }
            
            nav li {
                margin: 10px 0;
            }
            
            .hero h1 {
                font-size: 36px;
            }
            
            .hero p {
                font-size: 18px;
            }
            
            section {
                padding: 60px 0;
            }
        }
        
        @media (max-width: 480px) {
            .hero {
                padding: 80px 0;
            }
            
            .hero h1 {
                font-size: 30px;
            }
            
            .news-grid,
            .services-grid {
                grid-template-columns: 1fr;
            }
            
            h2 {
                font-size: 24px;
            }
        }