:root {
            --primary: #0a2463;
            --secondary: #3a86ff;
            --accent: #ff6b6b;
            --light: #f8f9fa;
            --dark: #212529;
            --gray: #6c757d;
            --light-blue: #e9f1ff;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            line-height: 1.6;
            color: var(--dark);
            background-color: var(--light);
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 导航栏样式 */
        header {
            background-color: white;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            color: var(--primary);
        }
        
        .logo i {
            margin-right: 10px;
            color: var(--secondary);
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 30px;
            position: relative;
        }
        
        .nav-links a {
            font-weight: 500;
            transition: color 0.3s;
            color: var(--dark);
        }
        
        .nav-links a:hover {
            color: var(--secondary);
        }
        
        .nav-links a.active {
            color: var(--secondary);
            font-weight: 600;
        }
        
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 3px;
            background-color: var(--secondary);
            border-radius: 2px;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 24px;
            background-color: var(--secondary);
            color: white;
            border-radius: 30px;
            font-weight: 500;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(58, 134, 255, 0.3);
        }
        
        .btn:hover {
            background-color: #2a75ff;
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(58, 134, 255, 0.4);
        }
        
        .btn-outline {
            background: transparent;
            border: 2px solid var(--secondary);
            color: var(--secondary);
        }
        
        .btn-outline:hover {
            background-color: var(--secondary);
            color: white;
        }
        
        .menu-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--primary);
        }
        .hero {
            background: linear-gradient(120deg, rgba(10, 36, 99, 0.9), rgba(58, 134, 255, 0.8)), url('/images/dn1.jpg');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 120px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%23ffffff' fill-opacity='0.1' d='M0,288L48,272C96,256,192,224,288,197.3C384,171,480,149,576,165.3C672,181,768,235,864,250.7C960,267,1056,245,1152,224C1248,203,1344,181,1392,170.7L1440,160L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E");
            background-size: cover;
            background-position: bottom;
        }
        
        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }
        
        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 20px;
            font-weight: 700;
        }
        
        .hero p {
            font-size: 1.3rem;
            margin-bottom: 30px;
            opacity: 0.9;
        }
        
        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 30px;
        }
        
        /* 服务区域样式 */
        .services {
            padding: 100px 0;
            background-color: white;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title h2 {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: var(--secondary);
            border-radius: 2px;
        }
        
        .section-title p {
            color: var(--gray);
            max-width: 600px;
            margin: 20px auto 0;
            font-size: 1.1rem;
        }
        
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .service-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s, box-shadow 0.3s;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }
        
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
        }
        
        .service-icon {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            font-size: 2.5rem;
            padding: 30px;
            text-align: center;
        }
        
        .service-content {
            padding: 25px;
        }
        
        .service-content h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--primary);
        }
        
        .service-content p {
            color: var(--gray);
            margin-bottom: 20px;
        }
        
        .service-link {
            color: var(--secondary);
            font-weight: 500;
            display: flex;
            align-items: center;
        }
        
        .service-link i {
            margin-left: 5px;
            transition: transform 0.3s;
        }
        
        .service-link:hover i {
            transform: translateX(5px);
        }
        
        /* 技术文章区域 */
        .articles {
            padding: 100px 0;
            background-color: var(--light-blue);
        }
        
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }
        
        .article-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }
        
        .article-card:hover {
            transform: translateY(-5px);
        }
        
        .article-image {
            height: 200px;
            overflow: hidden;
        }
        
        .article-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .article-card:hover .article-image img {
            transform: scale(1.05);
        }
        
        .article-content {
            padding: 25px;
        }
        
        .article-date {
            color: var(--secondary);
            font-size: 0.9rem;
            margin-bottom: 10px;
            display: block;
        }
        
        .article-content h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: var(--primary);
        }
        
        .article-content p {
            color: var(--gray);
            margin-bottom: 20px;
        }
        
        .view-all {
            text-align: center;
            margin-top: 50px;
        }
        
        /* 关于我们样式 */
        .about {
            padding: 100px 0;
            background-color: white;
        }
        
        .about-content {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 50px;
        }
        
        .about-text {
            flex: 1;
            min-width: 300px;
        }
        
        .about-text h2 {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 20px;
        }
        
        .about-text p {
            margin-bottom: 15px;
            color: var(--gray);
        }
        
        .about-stats {
            display: flex;
            gap: 30px;
            margin-top: 30px;
        }
        
        .stat-item {
            text-align: center;
        }
        
        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 5px;
        }
        
        .stat-text {
            color: var(--gray);
            font-size: 0.9rem;
        }
        
        .about-image {
            flex: 1;
            min-width: 300px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .about-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        
        /* 联系方式样式 */
        .contact {
            padding: 100px 0;
            background: linear-gradient(to right, var(--primary), #1a3585);
            color: white;
            position: relative;
            overflow: hidden;
        }
        
        .contact::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%23ffffff' fill-opacity='0.05' d='M0,128L48,117.3C96,107,192,85,288,112C384,139,480,213,576,224C672,235,768,181,864,181.3C960,181,1056,235,1152,234.7C1248,235,1344,181,1392,154.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E");
            background-size: cover;
            background-position: bottom;
        }
        
        .contact .container {
            position: relative;
            z-index: 1;
        }
        
        .contact .section-title h2 {
            color: white;
        }
        
        .contact-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }
        
        .contact-info {
            background: rgba(255, 255, 255, 0.1);
            padding: 30px;
            border-radius: 12px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .contact-info h3 {
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        
        .contact-item {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }
        
        .contact-item i {
            margin-right: 15px;
            font-size: 1.2rem;
            color: var(--secondary);
            width: 30px;
            height: 30px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        /* 表单样式 */
        .empire-form {
            width: 100%;
        }
        
        .empire-form table {
            width: 100%;
            border-collapse: collapse;
        }
        
        .empire-form tr {
            display: block;
            margin-bottom: 15px;
        }
        
        .empire-form td {
            display: block;
            padding: 0;
            background: transparent !important;
            height: auto !important;
            width: 100% !important;
        }
        
        .empire-form td:first-child {
            color: white;
            font-weight: 500;
            margin-bottom: 5px;
        }
        
        .empire-form select,
        .empire-form input[type="text"],
        .empire-form textarea {
            width: 100%;
            padding: 12px;
            border: none;
            border-radius: 30px;
            margin-bottom: 15px;
            background: rgba(255, 255, 255, 0.9);
        }
        
        .empire-form textarea {
            border-radius: 15px;
            min-height: 120px;
            resize: vertical;
        }
        
        .empire-form input[type="submit"] {
            width: 100%;
            padding: 12px;
            background-color: var(--secondary);
            color: white;
            border: none;
            border-radius: 30px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 4px 10px rgba(58, 134, 255, 0.3);
        }
        
        .empire-form input[type="submit"]:hover {
            background-color: #2a75ff;
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(58, 134, 255, 0.4);
        }
        
        /* 验证码样式 */
        .form-group {
            margin-bottom: 15px;
        }
        
        .required-field {
            color: white;
            font-weight: 500;
            display: block;
            margin-bottom: 5px;
        }
        
        .captcha-group {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .captcha-input {
            flex: 1;
            padding: 12px;
            border: none;
            border-radius: 30px;
            background: rgba(255, 255, 255, 0.9);
        }
        
        .captcha-img {
            border-radius: 8px;
            cursor: pointer;
            height: 40px;
            width: 100px;
            object-fit: cover;
            background: #f0f0f0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #333;
            font-weight: bold;
        }
        
        .captcha-refresh {
            color: var(--secondary);
            cursor: pointer;
            font-size: 0.9rem;
            white-space: nowrap;
        }
        
        .captcha-refresh:hover {
            text-decoration: underline;
        }
        
        /* 服务区域样式 */
        .service-area {
            padding: 100px 0;
            background-color: var(--light-blue);
        }
        
        .area-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-top: 50px;
        }
        
        .area-card {
            background: white;
            padding: 25px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s;
        }
        
        .area-card:hover {
            transform: translateY(-5px);
        }
        
        .area-card i {
            font-size: 2.5rem;
            color: var(--secondary);
            margin-bottom: 15px;
        }
        
        .area-card h3 {
            color: var(--primary);
            margin-bottom: 10px;
        }
        
        /* 页脚样式 */
        footer {
            background-color: var(--dark);
            color: white;
            padding: 70px 0 20px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }
        
        .footer-column h3 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            color: var(--secondary);
        }
        
        .footer-column ul {
            list-style: none;
        }
        
        .footer-column ul li {
            margin-bottom: 10px;
        }
        
        .footer-column ul li a:hover {
            color: var(--secondary);
        }
        
        .social-links {
            display: flex;
            gap: 15px;
        }
        
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            transition: background-color 0.3s;
        }
        
        .social-links a:hover {
            background-color: var(--secondary);
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: var(--gray);
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
            
            .section-title h2 {
                font-size: 2.2rem;
            }
        }
        
        @media (max-width: 768px) {
            .navbar {
                padding: 15px 0;
            }
            
            .nav-links {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 70px);
                background-color: white;
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                padding-top: 50px;
                transition: left 0.3s;
                box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            }
            
            .nav-links.active {
                left: 0;
            }
            
            .nav-links li {
                margin: 15px 0;
            }
            
            .menu-toggle {
                display: block;
            }
            
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .about-content {
                flex-direction: column;
            }
            
            .about-stats {
                flex-wrap: wrap;
                justify-content: center;
            }
            
            /* 移动端的显示 */
            .captcha-group {
                flex-direction: column;
                align-items: stretch;
            }
            
            .captcha-img {
                width: 100%;
                max-width: 120px;
                margin: 10px 0;
                align-self: center;
            }
            
            .captcha-refresh {
                align-self: center;
                margin-top: 5px;
            }
        }
        
        @media (max-width: 576px) {
            .hero {
                padding: 80px 0;
            }
            
            .hero h1 {
                font-size: 2rem;
            }
            
            .services, .articles, .about, .contact, .service-area {
                padding: 70px 0;
            }
            
            .section-title h2 {
                font-size: 1.8rem;
            }
            
            /* 验证码 */
            .captcha-group {
                flex-direction: column;
            }
            
            .captcha-img {
                width: 100%;
                max-width: 100px;
                height: 35px;
            }
        }