:root {
            --primary: #1a56db;
            --primary-dark: #0e3caf;
            --secondary: #00a1e9;
            --accent: #00c6c0;
            --light: #f8fafc;
            --dark: #1e293b;
            --gray: #64748b;
            --light-gray: #e2e8f0;
            --border: #cbd5e1;
            --success: #10b981;
            --warning: #f59e0b;
            --danger: #ef4444;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --font-sans: "AlibabaPuHuiTi", "Alibaba PuHuiTi", "Alibaba PuHuiTi 3.0", "MiSans", "MiSans VF", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: var(--font-sans);
        }
        

        /* Local icon replacements, avoids loading Font Awesome for a few decorative icons. */
        .fas {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-style: normal;
            font-weight: 900;
            line-height: 1;
        }

        .fa-server::before { content: "▦"; }
        .fa-microchip::before { content: "▣"; }
        .fa-laptop::before { content: "▭"; }
        .fa-phone::before { content: "☎"; }
        .fa-envelope::before { content: "✉"; }
        .fa-map-marker-alt::before { content: "⌖"; }
        .fa-clock::before { content: "◷"; }
        body {
            background-color: #f5f7fa;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
            color: #334155;
            line-height: 1.6;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        

        /* 顶部导航 - 参考材料人网首页导航 */
        .camp-top {
            width: 100%;
            height: 60px;
            overflow: hidden;
            background: #fff;
            position: fixed;
            top: 0;
            left: 0;
            z-index: 1000;
        }

        .camp-top.fixed {
            border-bottom: 1px solid #D5D6D8;
        }

        .wpn {
            width: 1180px;
            margin: 0 auto;
        }

        .cl {
            zoom: 1;
        }

        .cl::after {
            content: ".";
            display: block;
            height: 0;
            clear: both;
            visibility: hidden;
        }

        .top_nav {
            width: 1180px;
            height: 60px;
            border-collapse: collapse;
            border-spacing: 0;
        }

        .top_nav td {
            height: 60px;
            white-space: nowrap;
            color: #333;
        }

        .top_nav td a {
            display: block;
            width: 100%;
            height: 60px;
            line-height: 60px;
            color: #333;
            text-decoration: none;
            font-size: 16px;
            font-weight: 400;
        }

        .top_nav td a:hover {
            color: #336699;
            text-decoration: none;
        }

        .top_nav_td_on {
            background-color: #336699;
            color: #fff;
        }

        .top_nav_td_on a,
        .top_nav_td_on a:hover {
            color: #fff !important;
        }

        .logotxt img {
            display: inline-block;
            max-width: 150px;
            max-height: 60px;
            width: auto;
            height: auto;
            vertical-align: middle;
        }
        
        /* 按钮样式 */
        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 6px;
            font-weight: 600;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            text-decoration: none;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            box-shadow: var(--shadow);
            font-size: 14px;
        }
        
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-dark), #0086c7);
            box-shadow: 0 6px 15px rgba(26, 86, 219, 0.3);
            transform: translateY(-2px);
        }
        
        .btn-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
            padding: 10px 20px;
        }
        
        .btn-outline:hover {
            background-color: var(--primary);
            color: white;
        }
        
        /* 内容区块 */
        .section {
            padding: 60px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
            position: relative;
        }
        
        .section-title h2 {
            font-size: 36px;
            color: var(--dark);
            margin-bottom: 15px;
            font-weight: 700;
        }
        
        .section-title p {
            font-size: 18px;
            color: var(--gray);
            max-width: 700px;
            margin: 0 auto;
        }
        
        .section-title:after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 2px;
        }
        
        /* Banner区域 */
        .hero {
            background: linear-gradient(135deg, #0f2b6e 0%, #1a56db 100%);
            padding: 140px 0 80px;
            color: white;
            position: relative;
            overflow: hidden;
            margin-top: 0;
        }
        
        .hero:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('./laptop-2620118_1280.jpg') center/cover no-repeat;
            opacity: 0.1;
        }
        
        .hero-content {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            text-align: center;
            padding: 0 20px;
        }
        
        .hero-title {
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.2;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }
        
        .hero-subtitle {
            font-size: 20px;
            margin-bottom: 40px;
            opacity: 0.9;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .hero-stats {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 60px;
            gap: 20px;
        }
        
        .stat-item {
            padding: 20px 30px;
            text-align: center;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            min-width: 200px;
        }
        
        .stat-number {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 5px;
            color: white;
        }
        
        .stat-text {
            font-size: 16px;
            opacity: 0.8;
        }
        
        /* 服务卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }
        
        .service-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
        }
        
        .service-header {
            padding: 25px 25px 15px;
            border-bottom: 1px solid var(--light-gray);
        }
        
        .service-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .service-icon {
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            border-radius: 10px;
            font-size: 24px;
        }
        
        .service-body {
            padding: 25px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        
        .service-features {
            list-style: none;
            margin-bottom: 25px;
            flex-grow: 1;
        }
        
        .service-features li {
            padding: 10px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            border-bottom: 1px dashed var(--light-gray);
            font-size: 14px;
        }
        
        .service-features li:before {
            content: "✓";
            font-weight: 900;
            color: var(--success);
            font-size: 14px;
            margin-top: 4px;
        }
        
        .service-price {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 15px;
            text-align: center;
        }
        
        .service-price span {
            font-size: 16px;
            color: var(--gray);
            font-weight: 400;
        }
        
        .service-cta {
            width: 100%;
            text-align: center;
        }
        
        /* 任务外包 */
        .outsource {
            background: linear-gradient(135deg, #1a56db 0%, #0e3caf 100%);
            color: white;
            border-radius: 15px;
            overflow: hidden;
            margin: 50px 0;
            position: relative;
        }
        
        .outsource:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%231a56db"/><circle cx="30" cy="30" r="5" fill="%230e3caf" opacity="0.1"/><circle cx="70" cy="70" r="8" fill="%230e3caf" opacity="0.1"/></svg>');
            opacity: 0.1;
        }
        
        .outsource-content {
            position: relative;
            display: flex;
            align-items: center;
            padding: 60px;
        }
        
        .outsource-text {
            flex: 1;
            padding-right: 50px;
        }
        
        .outsource-title {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 20px;
        }
        
        .outsource-desc {
            margin-bottom: 30px;
            font-size: 16px;
            opacity: 0.9;
            max-width: 600px;
        }
        
        .outsource-image {
            flex: 1;
            text-align: center;
            font-size: 180px;
            color: rgba(255, 255, 255, 0.2);
        }

        /* 视频课程 */
        .courses-section {
            background-color: var(--light);
        }
        
        .courses-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }
        
        .course-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
        }
        
        .course-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
        }
        
        .course-image {
            height: 180px;
            overflow: hidden;
            position: relative;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 60px;
        }
        
        .course-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            background: var(--accent);
            color: white;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }
        
        .course-content {
            padding: 20px;
        }
        
        .course-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--dark);
            min-height: 50px;
        }
        
        .course-meta {
            display: flex;
            justify-content: space-between;
            color: var(--gray);
            font-size: 14px;
            margin-bottom: 15px;
            border-bottom: 1px solid var(--light-gray);
            padding-bottom: 15px;
        }
        
        .course-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .course-price {
            font-weight: 700;
            color: var(--primary);
            font-size: 18px;
        }
        
        .view-more {
            text-align: center;
            margin-top: 40px;
        }
        
        /* 联系方式模块 */
        .contact-section {
            background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
            border-radius: 15px;
            overflow: hidden;
            margin: 50px 0;
            position: relative;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
        }
        
        .contact-container {
            display: flex;
            padding: 60px;
        }
        
        .contact-info {
            flex: 1;
            padding-right: 50px;
        }
        
        .contact-title {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 25px;
            color: var(--primary);
            position: relative;
        }
        
        .contact-title:after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 80px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
        }
        
        .contact-desc {
            margin-bottom: 30px;
            font-size: 16px;
            color: var(--dark);
            line-height: 1.8;
        }
        
        .contact-details {
            margin-bottom: 40px;
        }
        
        .contact-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 20px;
            gap: 15px;
        }
        
        .contact-icon {
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            font-size: 24px;
            flex-shrink: 0;
        }
        
        .contact-text {
            flex: 1;
        }
        
        .contact-text h4 {
            font-size: 18px;
            margin-bottom: 5px;
            color: var(--dark);
        }
        
        .contact-text p {
            color: var(--gray);
            font-size: 16px;
        }
        
        .contact-qr {
            flex: 1;
            text-align: center;
            padding: 30px;
            background: white;
            border-radius: 12px;
            box-shadow: var(--shadow);
            max-width: 320px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }
        
        .qr-code {
            width: 200px;
            height: 200px;
            margin: 0 auto 20px;
            background: #f5f7fa;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px dashed var(--border);
            border-radius: 8px;
            font-size: 100px;
            color: var(--primary);
        }
        
        .qr-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--dark);
        }
        
        .qr-desc {
            color: var(--gray);
            margin-bottom: 20px;
            font-size: 16px;
        }
        
        /* 页脚 - 移除"联系我们"部分 */
        .footer {
            background: var(--dark);
            color: #cbd5e1;
            padding-top: 70px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 50px;
        }
        
        .footer-logo {
            margin-bottom: 20px;
        }
        
        .footer-logo img {
            height: 50px;
        }
        
        .footer-about {
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        
        .footer-title {
            font-size: 18px;
            color: white;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            color: #94a3b8;
            transition: all 0.3s ease;
            text-decoration: none;
            font-size: 15px;
        }
        
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        
        .social-links {
            display: flex;
            margin-top: 20px;
            gap: 10px;
        }
        
        .social-link {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            border-radius: 50%;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        
        .social-link:hover {
            background: var(--primary);
            transform: translateY(-3px);
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 25px 0;
            text-align: center;
            font-size: 14px;
            color: #94a3b8;
        }
        
        .footer-bottom a {
            color: #94a3b8;
            text-decoration: none;
        }
        
        .footer-bottom a:hover {
            color: white;
        }
        
        /* 响应式设计 */
        @media (max-width: 991px) {
            .camp-top {
                overflow-x: auto;
                overflow-y: hidden;
                -webkit-overflow-scrolling: touch;
            }

            .camp-top::-webkit-scrollbar {
                display: none;
            }

            .wpn {
                width: 100%;
            }

            .top_nav {
                width: max-content;
                min-width: 100%;
                table-layout: auto;
            }

            .top_nav td {
                width: 72px !important;
                min-width: 72px;
            }

            .top_nav .logotxt {
                width: 130px !important;
                min-width: 130px;
            }

            .top_nav .logotxt img {
                max-width: 120px;
            }

            .top_nav td:last-child {
                width: 92px !important;
                min-width: 92px;
            }

            .top_nav td:not([width]) {
                width: 0 !important;
                min-width: 0;
                padding: 0;
            }

            .hero-title {
                font-size: 40px;
            }
            
            .stat-item {
                min-width: 180px;
                padding: 15px 20px;
            }
            
            .stat-number {
                font-size: 32px;
            }
            
            .outsource-content,
            .contact-container {
                flex-direction: column;
                padding: 40px;
            }
            
            .outsource-text,
            .contact-info {
                padding-right: 0;
                margin-bottom: 40px;
            }
            
            .outsource-image {
                font-size: 120px;
            }

            .contact-qr {
                max-width: 100%;
            }
        }
        
        @media (max-width: 768px) {
            .top_nav td {
                width: 64px !important;
                min-width: 64px;
            }

            .top_nav td a {
                font-size: 14px;
            }

            .top_nav .logotxt {
                width: 112px !important;
                min-width: 112px;
            }

            .top_nav .logotxt img {
                max-width: 104px;
            }

            .top_nav td:last-child {
                width: 84px !important;
                min-width: 84px;
            }

            .hero {
                padding: 120px 0 60px;
            }
            
            .hero-title {
                font-size: 32px;
            }
            
            .hero-subtitle {
                font-size: 18px;
            }
            
            .section {
                padding: 60px 0;
            }
            
            .section-title h2 {
                font-size: 28px;
            }
            
            .service-card {
                max-width: 400px;
                margin: 0 auto;
            }
            
            .hero-stats {
                flex-direction: column;
                align-items: center;
            }
        }
        
        @media (max-width: 576px) {
            .hero-title {
                font-size: 28px;
            }
            
            .services-grid {
                grid-template-columns: 1fr;
            }
            
            .stat-item {
                width: 100%;
                max-width: 280px;
            }
            
            .outsource-title {
                font-size: 28px;
            }

            .contact-title {
                font-size: 28px;
            }
        }