 <style>
        /* 全局重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', sans-serif;
            background-color: #f9fafc;
            color: #1f2937;
            line-height: 1.5;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ----- 导航（彻底兼容 IE11） ----- */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.96);
            box-shadow: 0 1px 12px rgba(0, 0, 0, 0.05);
            z-index: 1000;
        }

        .nav-container {
            display: -ms-flexbox;
            display: flex;
            -ms-flex-align: center;
            align-items: center;
            -ms-flex-pack: justify;
            justify-content: space-between;
            padding: 0 32px;
            max-width: 1400px;
            margin: 0 auto;
            height: 72px;
        }

        .logo {
            display: -ms-flexbox;
            display: flex;
            -ms-flex-align: center;
            align-items: center;
        }
        .logo a {
            display: inline-block;
            margin-right: 12px;
            line-height: 0;
        }
        .logo-img {
            width: 38px;
            height: 38px;
            display: block;
            border-radius: 8px;
        }
        .logo h1 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #0f2b4d;
            letter-spacing: -0.3px;
            margin: 0;
            line-height: 1.2;
        }
        .logo span {
            font-size: 0.7rem;
            font-weight: 400;
            color: #4b5563;
            display: inline-block;
            margin-left: 4px;
        }

        /* 导航链接 - 使用 margin 彻底替代 gap */
        .nav-links {
            display: -ms-flexbox;
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li {
            margin-right: 2rem;
        }
        .nav-links li:last-child {
            margin-right: 0;
        }

        .nav-links a {
            text-decoration: none;
            font-weight: 700;
            font-size: 1rem;
            color: #1a6c9e;
            padding-bottom: 4px;
            border-bottom: 2px solid transparent;
            display: inline-block;
            transition: color 0.2s;
        }
        .nav-links a:hover {
            color: #0d4668;
            border-bottom-color: #1a6c9e;
        }
        .nav-links a.active {
            color: #0d4668;
            border-bottom-color: #1a6c9e;
        }

        .menu-toggle {
            display: none;
            font-size: 1.6rem;
            background: none;
            border: none;
            cursor: pointer;
            color: #1f2a44;
        }

        /* 移动端响应式 */
        @media (max-width: 920px) {
            .nav-links {
                position: fixed;
                top: 72px;
                left: -100%;
                -ms-flex-direction: column;
                flex-direction: column;
                background: white;
                width: 70%;
                height: calc(100vh - 72px);
                padding: 2rem 1.5rem;
                box-shadow: 2px 0 12px rgba(0,0,0,0.1);
                transition: left 0.3s ease;
                z-index: 999;
                overflow-y: auto;
            }
            .nav-links.active {
                left: 0;
            }
            .nav-links li {
                margin-right: 0;
                margin-bottom: 1.8rem;
            }
            .nav-links li:last-child {
                margin-bottom: 0;
            }
            .menu-toggle {
                display: block;
            }
            .nav-container {
                padding: 0 20px;
            }
            .nav-links a {
                font-size: 1.2rem;
                display: block;
                padding: 6px 0;
            }
        }

        /* ----- Hero 区域 ----- */
        .hero {
            background: linear-gradient(120deg, #eef2f9 0%, #d9e3ef 100%);
            padding: 140px 0 90px;
            margin-top: 0;
        }
        .hero .container {
            display: -ms-flexbox;
            display: flex;
            -ms-flex-wrap: wrap;
            flex-wrap: wrap;
            -ms-flex-align: center;
            align-items: center;
            -ms-flex-pack: justify;
            justify-content: space-between;
        }
        .hero-content {
            -ms-flex: 1 1 300px;
            flex: 1 1 300px;
            padding-right: 20px;
        }
        .hero-content h2 {
            font-size: 3rem;
            font-weight: 700;
            color: #0b2b44;
            line-height: 1.2;
            margin-bottom: 1.2rem;
        }
        .hero-content p {
            font-size: 1.1rem;
            color: #2c3e4e;
            margin-bottom: 2rem;
            max-width: 550px;
        }
        .btn-primary {
            display: inline-block;
            background-color: #1e6f9f;
            color: white;
            padding: 12px 28px;
            border-radius: 40px;
            text-decoration: none;
            font-weight: 600;
            transition: 0.2s;
            box-shadow: 0 4px 8px rgba(0,0,0,0.05);
        }
        .btn-primary:hover {
            background-color: #0f567d;
            transform: translateY(-2px);
        }
        .hero-stats {
            -ms-flex: 0.8 1 250px;
            flex: 0.8 1 250px;
            background: rgba(255,255,255,0.5);
            border-radius: 32px;
            padding: 1.5rem;
            display: -ms-flexbox;
            display: flex;
            -ms-flex-pack: distribute;
            justify-content: space-around;
            -ms-flex-wrap: wrap;
            flex-wrap: wrap;
        }
        .stat-item {
            text-align: center;
            padding: 0 0.5rem;
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: #1e6f9f;
        }

        /* ----- 通用标题和间距 ----- */
        .section-padding {
            padding: 80px 0;
        }
        .section-title {
            text-align: center;
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 3rem;
            color: #0b2b44;
            position: relative;
        }
        .section-title:after {
            content: '';
            display: block;
            width: 70px;
            height: 4px;
            background: #2c7da0;
            margin: 12px auto 0;
            border-radius: 2px;
        }

        /* ----- 平台介绍（修复卡片居中及尺寸，添加 hover 效果） ----- */
        .about-grid {
            display: -ms-flexbox;
            display: flex;
            -ms-flex-wrap: wrap;
            flex-wrap: wrap;
            -ms-flex-pack: center;
            justify-content: center;
            margin-top: 2rem;
        }
        .about-card {
            background: white;
            padding: 2rem 1.5rem;
            border-radius: 28px;
            box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05);
            border: 1px solid #eef2f6;
            text-align: center;
            /* 关键修复：固定基础宽度，让 IE11 下尺寸一致且居中 */
            -ms-flex: 0 1 280px;
            flex: 0 1 280px;
            width: 280px;
            max-width: 100%;
            margin: 0 1rem 1.5rem 1rem;
            transition: all 0.25s ease;
        }
        .about-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 15px 30px -8px rgba(0,0,0,0.15);
            background: #fafcff;
        }
        .about-card i {
            font-size: 2.5rem;
            color: #1e6f9f;
            margin-bottom: 1rem;
            display: block;
        }
        .about-card h3 {
            margin-bottom: 0.75rem;
        }

        /* ----- 信息动态（选项卡） ----- */
        .dynamic-tabs {
            background: white;
            border-radius: 32px;
            box-shadow: 0 10px 25px -5px rgba(0,0,0,0.05);
            overflow: hidden;
        }
        .tab-headers {
            display: -ms-flexbox;
            display: flex;
            border-bottom: 1px solid #e2e8f0;
            background: #f8fafc;
        }
        .tab-btn {
            -ms-flex: 1;
            flex: 1;
            padding: 1rem;
            font-weight: 600;
            background: none;
            border: none;
            font-size: 1rem;
            cursor: pointer;
            color: #4b5563;
            border-bottom: 3px solid transparent;
            transition: 0.2s;
        }
        .tab-btn.active {
            color: #1e6f9f;
            border-bottom-color: #1e6f9f;
            background: white;
        }
        .tab-content {
            padding: 2rem;
        }
        .news-list {
            display: -ms-flexbox;
            display: flex;
            -ms-flex-direction: column;
            flex-direction: column;
        }
        .news-item {
            border-bottom: 1px solid #edf2f7;
            padding: 0.8rem 1rem;
            cursor: pointer;
            transition: background 0.2s;
            border-radius: 12px;
            margin-bottom: 0.5rem;
        }
        .news-item:last-child {
            margin-bottom: 0;
            border-bottom: none;
        }
        .news-item:hover {
            background: #f0f4fa;
        }
        .news-date {
            font-size: 0.8rem;
            color: #6c757d;
            margin-bottom: 0.3rem;
        }
        .news-title {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 0.4rem;
        }
        .more-link {
            display: inline-block;
            margin-top: 1.5rem;
            color: #1a6c9e;
            font-weight: 600;
            text-decoration: none;
        }
        .more-link:hover {
            text-decoration: underline;
        }

        /* ----- 业务种类（修复卡片居中及尺寸） ----- */
        .services-grid {
            display: -ms-flexbox;
            display: flex;
            -ms-flex-wrap: wrap;
            flex-wrap: wrap;
            -ms-flex-pack: center;
            justify-content: center;
        }
        .service-card {
            background: white;
            border-radius: 24px;
            padding: 2rem 1.5rem;
            border: 1px solid #eef2f6;
            text-align: center;
            transition: all 0.3s ease;
            /* 与 about-card 保持一致修复方案 */
            -ms-flex: 0 1 280px;
            flex: 0 1 280px;
            width: 280px;
            max-width: 100%;
            margin: 0 1rem 1.5rem 1rem;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 30px -12px rgba(0,0,0,0.1);
        }
        .service-icon {
            font-size: 2.8rem;
            color: #1e6f9f;
            margin-bottom: 1rem;
            display: block;
        }
        .service-card h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }

        /* ----- 客户服务 ----- */
        .service-wrapper {
            display: -ms-flexbox;
            display: flex;
            -ms-flex-wrap: wrap;
            flex-wrap: wrap;
        }
        .faq-box {
            -ms-flex: 1.5 1 300px;
            flex: 1.5 1 300px;
            background: white;
            border-radius: 28px;
            padding: 1.8rem;
            border: 1px solid #eef2f6;
            margin-right: 1.5rem;
            margin-bottom: 1rem;
        }
        .online-box {
            -ms-flex: 1 1 250px;
            flex: 1 1 250px;
            background: white;
            border-radius: 28px;
            padding: 1.8rem;
            text-align: center;
            border: 1px solid #eef2f6;
        }
        .faq-item {
            border-bottom: 1px solid #e9ecef;
            padding: 0.8rem 0;
            cursor: pointer;
            border-radius: 8px;
            transition: 0.2s;
            margin-bottom: 0.3rem;
        }
        .faq-item:last-child {
            border-bottom: none;
            margin-bottom: 0;
        }
        .faq-item:hover {
            background: #f0f4fa;
            padding-left: 0.5rem;
        }
        .faq-question {
            display: -ms-flexbox;
            display: flex;
            -ms-flex-pack: justify;
            justify-content: space-between;
            font-weight: 600;
        }
        .chat-link {
            display: inline-block;
            background-color: #1e6f9f;
            color: white;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            text-decoration: none;
            margin: 20px 0 16px;
            transition: 0.2s;
        }
        .chat-link:hover {
            background-color: #0f567d;
            transform: translateY(-2px);
        }
        .online-contact {
            margin-top: 1rem;
        }

        /* ----- APP下载（修复二维码间距） ----- */
        .app-download {
            background: linear-gradient(135deg, #11212e 0%, #1b3b4f 100%);
            color: white;
            border-radius: 48px;
            padding: 2rem 2.5rem;
        }
        .app-flex {
            display: -ms-flexbox;
            display: flex;
            -ms-flex-wrap: wrap;
            flex-wrap: wrap;
            -ms-flex-align: center;
            align-items: center;
            -ms-flex-pack: justify;
            justify-content: space-between;
        }
        .app-info {
            -ms-flex: 1.2 1 250px;
            flex: 1.2 1 250px;
            padding-right: 20px;
        }
        .app-info h3 {
            font-size: 1.8rem;
            margin-bottom: 0.5rem;
        }
        .app-buttons {
            display: -ms-flexbox;
            display: flex;
            -ms-flex-wrap: wrap;
            flex-wrap: wrap;
            margin-top: 1rem;
        }
        .btn-app {
            background: rgba(255,255,255,0.15);
            padding: 10px 22px;
            border-radius: 40px;
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: 0.2s;
            margin-right: 1rem;
            margin-bottom: 0.5rem;
        }
        .btn-app:last-child {
            margin-right: 0;
        }
        .btn-app:hover {
            background: white;
            color: #1b3b4f;
        }
        .qr-codes {
            display: -ms-flexbox;
            display: flex;
            -ms-flex-wrap: wrap;
            flex-wrap: wrap;
            -ms-flex-pack: center;
            justify-content: center;
        }
        .qr-item {
            text-align: center;
            background: rgba(255,255,255,0.1);
            padding: 1rem;
            border-radius: 28px;
            margin-right: 1.8rem;
            margin-bottom: 0.5rem;
        }
        .qr-item:last-child {
            margin-right: 0;
        }
        .qr-square {
            width: 130px;
            height: 130px;
            background: white;
            border-radius: 20px;
            display: -ms-flexbox;
            display: flex;
            -ms-flex-align: center;
            align-items: center;
            -ms-flex-pack: center;
            justify-content: center;
            margin-bottom: 12px;
        }
        .qr-square img {
            width: 100%;
            height: auto;
            border-radius: 16px;
            display: block;
        }
        .qr-item span {
            display: block;
            font-weight: 600;
            font-size: 0.9rem;
            color: white;
            margin-top: 8px;
        }

        /* ----- 模态框 ----- */
        .modal-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            z-index: 2000;
            -ms-flex-align: center;
            align-items: center;
            -ms-flex-pack: center;
            justify-content: center;
            padding: 20px;
        }
        .modal-overlay.active {
            display: -ms-flexbox;
            display: flex;
        }
        .modal-box {
            background: white;
            max-width: 640px;
            width: 100%;
            max-height: 90vh;
            border-radius: 32px;
            padding: 2rem;
            box-shadow: 0 30px 60px rgba(0,0,0,0.3);
            position: relative;
            animation: slideUp 0.3s ease;
            display: -ms-flexbox;
            display: flex;
            -ms-flex-direction: column;
            flex-direction: column;
        }
        @keyframes slideUp {
            from { transform: translateY(30px); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }
        .modal-close {
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 1.8rem;
            background: none;
            border: none;
            cursor: pointer;
            color: #6c757d;
            z-index: 10;
        }
        .modal-close:hover {
            color: #1f2937;
        }
        .modal-title {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: #0b2b44;
            padding-right: 40px;
        }
        .modal-date {
            font-size: 0.9rem;
            color: #6c757d;
            margin-bottom: 1.2rem;
        }
        .modal-body {
            font-size: 1rem;
            color: #1f2937;
            line-height: 1.7;
            overflow-y: auto;
            max-height: 60vh;
            padding-right: 4px;
        }
        .modal-body img {
            max-width: 100% !important;
            height: auto !important;
            border-radius: 12px;
            margin: 12px 0;
        }
        .modal-body p {
            margin-bottom: 1rem;
        }

        footer {
            background: #0f1a24;
            color: #b0c4d9;
            padding: 2rem 0;
            text-align: center;
        }
        .foot {
            color: #FFFFFF;
        }

        /* 移动端优化 */
        @media (max-width: 760px) {
            .hero-content h2 { font-size: 2rem; }
            .section-padding { padding: 60px 0; }
            .app-flex { -ms-flex-direction: column; flex-direction: column; text-align: center; }
            .app-info { padding-right: 0; }
            .logo-img { width: 32px; height: 32px; }
            .logo h1 { font-size: 1.2rem; }
            .qr-square { width: 110px; height: 110px; }
            .modal-box { padding: 1.5rem; max-height: 95vh; }
            .modal-body { max-height: 50vh; }
            .faq-box { margin-right: 0; }
            /* 移动端卡片改为占满 */
            .about-card, .service-card {
                -ms-flex: 0 1 100%;
                flex: 0 1 100%;
                width: auto;
                max-width: 360px;
                margin: 0 auto 1.5rem;
            }
        }
    </style>