* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            background-color: #f8fafc;
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 5px;
        }
        
        /* 头部样式 */
        header {
            background: linear-gradient(135deg, #1a56a8 0%, #0d3c7c 100%);
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }
        
        .header-scrolled {
            padding: 8px 0;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo-icon {
            width: 50px;
            height: 50px;
            background: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
        }
        
        .logo-icon i {
            color: #1a56a8;
            font-size: 24px;
        }
        
        .logo-text {
            font-size: 24px;
            font-weight: 700;
        }
        
        .logo-text span {
            color: #ff9e1b;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 30px;
        }
        
        nav ul li a {
            color: rgba(255, 255, 255, 0.9);
            text-decoration: none;
            font-weight: 500;
            padding: 8px 0;
            position: relative;
            transition: all 0.3s;
        }
        
        nav ul li a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 3px;
            background: #ff9e1b;
            bottom: 0;
            left: 0;
            transition: width 0.3s;
        }
        
        nav ul li a:hover, 
        nav ul li a.active {
            color: white;
        }
        
        nav ul li a:hover::after,
        nav ul li a.active::after {
            width: 100%;
        }
        
        .mobile-menu-btn {
            display: none;
            font-size: 24px;
            cursor: pointer;
            color: white;
        }
        
        /* Banner部分 */
        .banner {
            height: 600px;
            background: linear-gradient(rgba(13, 60, 124, 0.85), rgba(13, 60, 124, 0.85)), 
                        url('../images/header_bg.jpg');
            background-size: cover;
            background-position: center;
            color: white;
            display: flex;
            align-items: center;
            text-align: center;
            position: relative;
        }
        
        .banner-content {
            max-width: 800px;
            margin: 0 auto;
            padding: 0 20px;
            transform: translateY(30px);
            opacity: 0;
            transition: all 0.8s ease;
        }
        
        .banner-content.active {
            transform: translateY(0);
            opacity: 1;
        }
        
        .banner h1 {
            font-size: 48px;
            margin-bottom: 20px;
            line-height: 1.2;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }
        
        .banner p {
            font-size: 20px;
            margin-bottom: 30px;
            opacity: 0.9;
        }
        
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, #ff9e1b 0%, #ff6b00 100%);
            color: white;
            padding: 14px 35px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            transition: all 0.3s;
            box-shadow: 0 4px 15px rgba(255, 158, 27, 0.3);
            position: relative;
            overflow: hidden;
        }
        
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(255, 158, 27, 0.4);
        }
        
        /* 服务部分 */
        .services {
            padding: 100px 0;
            background: linear-gradient(to bottom, #f0f4f9, #e6eef8);
            position: relative;
            overflow: hidden;
        }
        
        .services::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(26, 86, 168, 0.05);
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 70px;
        }
        
        .section-title {
            font-size: 36px;
            color: #1a56a8;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title span{           
            color:#e6eef8;            
        }

        
        .section-subtitle span{           
            color:#eec007;            
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, #1a56a8, #ff9e1b);
            border-radius: 2px;
        }
        
        .section-subtitle {
            font-size: 18px;
            color: #666;
            max-width: 700px;
            margin: 25px auto 0;
        }
        
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .service-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.5s ease;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.06);
            text-align: center;
            padding: 40px 30px;
            position: relative;
            z-index: 2;
            opacity: 0;
            transform: translateY(30px);
        }
        
        .service-card.animate {
            opacity: 1;
            transform: translateY(0);
        }
        
        .service-card:hover {
            transform: translateY(-10px) !important;
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }
        
        .service-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #1a56a8, #0d3c7c);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: white;
            font-size: 32px;
            transition: all 0.4s;
        }
        
        .service-card:hover .service-icon {
            background: linear-gradient(135deg, #ff6b00, #e05d00);
            transform: rotateY(360deg);
        }
        
        .service-content h3 {
            font-size: 22px;
            margin-bottom: 15px;
            color: #1a56a8;
        }
        
        .service-content p {
            color: #666;
            margin-bottom: 20px;
        }
        
        /* 案例欣赏部分 */
        .cases {
            padding: 100px 0;
            background-color: #fff;
        }
        
        .cases-tabs {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        
        .tab-btn {
            padding: 10px 25px;
            margin: 5px;
            background: #f0f4f9;
            border-radius: 30px;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: 500;
        }
        
        .tab-btn.active, .tab-btn:hover {
            background: linear-gradient(135deg, #1a56a8, #0d3c7c);
            color: white;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(26, 86, 168, 0.3);
        }
        
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .case-card {
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
            transition: all 0.5s ease;
            position: relative;
            opacity: 0;
            transform: translateY(30px);
        }
        
        .case-card.animate {
            opacity: 1;
            transform: translateY(0);
        }
        
        .case-card:hover {
            transform: translateY(-15px) !important;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }
        
        .case-img {
            height: 250px;
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }
        
        .case-img::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to top, rgba(13, 60, 124, 0.7), transparent);
            opacity: 0;
            transition: opacity 0.4s;
        }
        
        .case-card:hover .case-img::before {
            opacity: 1;
        }
        
        .case-tag {
            position: absolute;
            top: 20px;
            right: 20px;
            background: #ff6b00;
            color: white;
            padding: 5px 15px;
            border-radius: 30px;
            font-size: 14px;
            z-index: 2;
        }
        
        .case-content {
            padding: 25px;
        }
        
        .case-content h3 {
            font-size: 22px;
            margin-bottom: 15px;
            color: #1a56a8;
            transition: color 0.3s;
        }
        
        .case-card:hover .case-content h3 {
            color: #ff6b00;
        }
        
        .case-content p {
            color: #666;
            margin-bottom: 20px;
            line-height: 1.7;
        }
        
        .case-meta {
            display: flex;
            justify-content: space-between;
            border-top: 1px solid #eee;
            padding-top: 20px;
            color: #888;
            font-size: 14px;
        }
        
        .view-btn {
            position: absolute;
            bottom: -50px;
            left: 50%;
            transform: translateX(-50%);
            background: white;
            color: #1a56a8;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            transition: all 0.4s;
            z-index: 3;
        }
        
        .case-card:hover .view-btn {
            bottom: 20px;
        }
        
        .view-btn:hover {
            background: #ff6b00;
            color: white;
            transform: translateX(-50%) rotate(90deg);
        }
        
        /* 会社概要部分 */
        .company-overview {
            padding: 100px 0;
            background: linear-gradient(135deg, #f0f7ff 0%, #e6f0ff 100%);
        }
        
        .overview-content {
            display: flex;
            gap: 50px;
            margin-top: 50px;
        }
        
        .overview-text {
            flex: 1;
        }
        
        .overview-text h3 {
            font-size: 28px;
            color: #1a56a8;
            margin-bottom: 25px;
        }
        
        .overview-text p {
            color: #555;
            line-height: 1.8;
            margin-bottom: 25px;
            font-size: 17px;
        }
        
        .highlight-box {
            background: linear-gradient(135deg, #ffffff 0%, #f8faff 100%);
            border-left: 4px solid #1a56a8;
            padding: 25px;
            border-radius: 0 8px 8px 0;
            margin: 30px 0;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .overview-stats {
            flex: 1;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 25px;
        }
        
        .stat-card {
            background: #f8fafc;
            border-radius: 10px;
            padding: 30px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s;
            border: 1px solid #eaeaea;
        }
        
        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            border-color: #1a56a8;
        }
        
        .stat-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, #1a56a8 0%, #0d3c7c 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: white;
            font-size: 28px;
        }
        
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: #1a56a8;
            margin-bottom: 5px;
        }
        
        .stat-label {
            color: #666;
            font-size: 16px;
        }
        
        /* 公司信息表格 */
        .company-info {
            padding: 80px 0;
            background-color: #fff;
        }
        
        .info-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 40px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            background: white;
            border-radius: 10px;
            overflow: hidden;
        }
        
        .info-table th {
            background: linear-gradient(135deg, #1a56a8 0%, #0d3c7c 100%);
            color: white;
            text-align: left;
            padding: 18px 25px;
            font-weight: 600;
            width: 30%;
        }
        
        .info-table td {
            padding: 18px 25px;
            border-bottom: 1px solid #eaeaea;
            color: #555;
        }
        
        .info-table tr:last-child td {
            border-bottom: none;
        }
        
        /* 公司理念部分 */
        .company-philosophy {
            padding: 100px 0;
            background: linear-gradient(135deg, #1a56a8 0%, #0d3c7c 100%);
            color: white;
        }
        
        .philosophy-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }
        
        .philosophy-card {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            padding: 40px 30px;
            text-align: center;
            transition: all 0.4s;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        
        .philosophy-card:hover {
            transform: translateY(-10px);
            background: rgba(255, 255, 255, 0.2);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }
        
        .philosophy-icon {
            font-size: 48px;
            color: #ff9e1b;
            margin-bottom: 25px;
            transition: all 0.4s;
        }
        
        .philosophy-title {
            font-size: 22px;
            color: white;
            margin-bottom: 20px;
            transition: all 0.4s;
        }
        
        .philosophy-text {
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.7;
            transition: all 0.4s;
        }
        
        /* 统计数据部分 */
        .stats {
            padding: 80px 0;
            background: linear-gradient(135deg, #f0f7ff 0%, #e6f0ff 100%);
            text-align: center;
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
        }
        
        .stat-item {
            padding: 20px;
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease;
        }
        
        .stat-item.animate {
            opacity: 1;
            transform: translateY(0);
        }
        
        .stat-icon {
            font-size: 48px;
            margin-bottom: 20px;
            color: #1a56a8;
        }
        
        .stat-number {
            font-size: 48px;
            font-weight: bold;
            margin-bottom: 10px;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: #1a56a8;
        }
        
        .stat-label {
            font-size: 18px;
            color: #666;
        }
        
        /* 页脚 */
        footer {
            background: linear-gradient(135deg, #0d3c7c 0%, #092954 100%);
            color: rgba(255, 255, 255, 0.8);
            padding: 80px 0 30px;
            position: relative;
        }
        
        .footer-wave {
            position: absolute;
            top: -1px;
            left: 0;
            width: 100%;
            overflow: hidden;
            line-height: 0;
        }
        
        .footer-wave svg {
            position: relative;
            display: block;
            width: calc(100% + 1.3px);
            height: 80px;
        }
        
        .footer-wave .shape-fill {
            fill: #f0f4f9;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
            position: relative;
            z-index: 2;
        }
        
        .footer-column h3 {
            color: white;
            font-size: 20px;
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 2px solid rgba(255, 158, 27, 0.5);
            display: inline-block;
        }
        
        .footer-column ul li {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
        }
        
        .footer-column ul li i {
            color: #ff9e1b;
            margin-right: 10px;
            width: 20px;
        }
        
        .footer-column ul li a {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: all 0.3s;
        }
        
        .footer-column ul li a:hover {
            color: #ff9e1b;
            padding-left: 5px;
        }
        
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 15px;
            color: rgba(255, 255, 255, 0.6);
        }
        
        /* 返回顶部按钮 */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #1a56a8, #0d3c7c);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
            z-index: 999;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        }
        
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }
        
        .back-to-top:hover {
            background: linear-gradient(135deg, #ff6b00, #e05d00);
            transform: translateY(-5px);
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .overview-content {
                flex-direction: column;
            }
            
            .overview-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .cases-grid {
                grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            }
        }
        
        @media (max-width: 768px) {
            nav ul {
                display: none;
                position: fixed;
                top: 80px;
                left: 0;
                right: 0;
                background: linear-gradient(135deg, #1a56a8 0%, #0d3c7c 100%);
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
            }
            
            nav ul.show {
                display: flex;
            }
            
            nav ul li {
                margin: 15px 0;
                text-align: center;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .banner h1 {
                font-size: 36px;
            }
            
            .banner p {
                font-size: 18px;
            }
            
            .overview-stats {
                grid-template-columns: 1fr;
            }
            
            .section-title {
                font-size: 30px;
            }
        }
        
        @media (max-width: 576px) {
            .banner {
                height: 500px;
            }
            
            .banner h1 {
                font-size: 32px;
            }
            
            .section-title {
                font-size: 28px;
            }
            
            .info-table th,
            .info-table td {
                padding: 12px 15px;
                font-size: 14px;
            }
            
            .info-table th {
                width: 35%;
            }
        }

        /* 联系我们部分 */
        .contact-section {
            padding: 100px 0;
            background: linear-gradient(to bottom, #f0f4f9, #e6eef8);
            position: relative;
            overflow: hidden;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 70px;
        }
        
        .section-title {
            font-size: 36px;
            color: #1a56a8;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, #1a56a8, #ff9e1b);
            border-radius: 2px;
        }
        
        .section-subtitle {
            font-size: 18px;
            color: #666;
            max-width: 700px;
            margin: 25px auto 0;
        }
        
        .contact-container {
            display: flex;
            gap: 50px;
        }
        
        .contact-info {
            flex: 1;
            background: white;
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        
        .info-item {
            display: flex;
            margin-bottom: 30px;
            align-items: flex-start;
        }
        
        .info-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #1a56a8, #0d3c7c);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 20px;
            margin-right: 20px;
            flex-shrink: 0;
        }
        
        .info-content h3 {
            font-size: 20px;
            color: #1a56a8;
            margin-bottom: 8px;
        }
        
        .info-content p {
            color: #555;
            line-height: 1.7;
        }
        
        .map-container {
            height: 300px;
            background: #e9e9e9;
            border-radius: 8px;
            overflow: hidden;
            margin-top: 30px;
            position: relative;
        }
        
        .map-placeholder {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100%;
            color: #666;
            font-size: 18px;
        }
        
        /* 联系表单 */
        .contact-form {
            flex: 1;
            background: white;
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }
        
        .form-group {
            margin-bottom: 25px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: #1a56a8;
        }
        
        .form-control {
            width: 100%;
            padding: 14px 20px;
            border: 1px solid #ddd;
            border-radius: 8px;
            font-size: 16px;
            transition: all 0.3s;
        }
        
        .form-control:focus {
            border-color: #1a56a8;
            box-shadow: 0 0 0 3px rgba(26, 86, 168, 0.1);
            outline: none;
        }
        
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        
        .submit-btn {
            display: inline-block;
            background: linear-gradient(135deg, #1a56a8 0%, #0d3c7c 100%);
            color: white;
            padding: 15px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
            width: 100%;
        }
        
        .submit-btn:hover {
            background: linear-gradient(135deg, #ff9e1b 0%, #ff6b00 100%);
            transform: translateY(-3px);
        }
        
        /* 成功消息 */
        .success-message {
            background: #d4edda;
            color: #155724;
            padding: 15px;
            border-radius: 8px;
            margin-top: 20px;
            display: none;
        }
        
        
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .contact-container {
                flex-direction: column;
            }
        }