<style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: #f0f8ff;
            color: #1a2a3a;
            line-height: 1.6;
        }
        a {
            text-decoration: none;
            color: #2B6FDF;
            transition: color 0.2s ease;
        }
        a:hover { color: #1a4f9e; }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header */
        .header {
            background: linear-gradient(135deg, #1a4f9e 0%, #2B6FDF 100%);
            padding: 16px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
        }
        .header .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: white;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: bold;
            color: #2B6FDF;
        }
        .logo h1 {
            font-size: 24px;
            font-weight: 700;
            color: white;
        }
        .logo span {
            font-weight: 400;
            font-size: 14px;
            color: rgba(255,255,255,0.8);
        }
        .nav {
            display: flex;
            gap: 32px;
        }
        .nav a {
            color: white;
            font-weight: 500;
            padding: 8px 0;
            border-bottom: 2px solid transparent;
        }
        .nav a:hover, .nav a.active {
            border-bottom-color: white;
        }
        /* Buttons */
        .btn-primary {
            background: linear-gradient(135deg, #FF8C00, #FF6B00);
            color: white;
            padding: 14px 36px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 18px;
            border: none;
            cursor: pointer;
            display: inline-block;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 4px 12px rgba(255,107,0,0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255,107,0,0.4);
            color: white;
        }
        .btn-secondary {
            background: transparent;
            border: 2px solid #2B6FDF;
            color: #2B6FDF;
            padding: 12px 32px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 16px;
            display: inline-block;
        }
        .btn-secondary:hover {
            background: #2B6FDF;
            color: white;
        }
        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, #e8f4ff 0%, #d4eaff 100%);
            padding: 80px 0;
            text-align: center;
        }
        .hero h2 {
            font-size: 48px;
            color: #1a2a3a;
            margin-bottom: 20px;
            font-weight: 700;
        }
        .hero p {
            font-size: 20px;
            color: #4a5a6a;
            max-width: 700px;
            margin: 0 auto 40px;
        }
        .hero-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 60px;
        }
        .stats {
            display: flex;
            justify-content: center;
            gap: 60px;
            flex-wrap: wrap;
        }
        .stat-card {
            text-align: center;
        }
        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: #2B6FDF;
        }
        .stat-label {
            color: #6a7a8a;
            margin-top: 8px;
        }
        .stars {
            color: #FFB800;
            font-size: 20px;
            letter-spacing: 2px;
        }
        /* Section通用 */
        .section {
            padding: 80px 0;
        }
        .section-title {
            font-size: 36px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 16px;
            color: #1a2a3a;
        }
        .section-sub {
            text-align: center;
            color: #6a7a8a;
            margin-bottom: 48px;
            font-size: 18px;
        }
        /* 功能卡片网格 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }
        .card {
            background: white;
            border-radius: 24px;
            padding: 32px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.05);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 32px rgba(0,0,0,0.1);
        }
        .card-icon {
            font-size: 48px;
            margin-bottom: 20px;
        }
        .card h3 {
            font-size: 22px;
            margin-bottom: 16px;
            color: #1a2a3a;
        }
        .card p {
            color: #5a6a7a;
            line-height: 1.7;
        }
        /* 产品介绍长文案 */
        .intro-text {
            background: white;
            border-radius: 24px;
            padding: 48px;
            margin-top: 20px;
        }
        .intro-text h3 {
            font-size: 24px;
            margin: 24px 0 16px;
            color: #1a2a3a;
        }
        .intro-text h3:first-child { margin-top: 0; }
        .intro-text p {
            color: #4a5a6a;
            margin-bottom: 16px;
            line-height: 1.8;
        }
        /* 平台下载卡片 */
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
        }
        .platform-card {
            background: white;
            border-radius: 20px;
            padding: 28px;
            text-align: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        }
        .platform-card .icon {
            font-size: 48px;
            margin-bottom: 16px;
        }
        .platform-card h4 {
            font-size: 20px;
            margin-bottom: 8px;
        }
        .platform-card .version {
            color: #2B6FDF;
            font-size: 14px;
            font-weight: 500;
        }
        /* FAQ折叠 */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            background: white;
            border-radius: 16px;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
        }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 18px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: white;
            transition: background 0.2s;
        }
        .faq-question:hover {
            background: #f8faff;
        }
        .faq-question .num {
            color: #2B6FDF;
            margin-right: 16px;
            font-weight: 700;
        }
        .faq-question .q-text {
            flex: 1;
        }
        .faq-question .arrow {
            font-size: 20px;
            transition: transform 0.2s;
        }
        .faq-item.active .faq-question .arrow {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s;
            background: #fafcff;
            border-top: 1px solid #eef2f8;
            color: #5a6a7a;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            padding: 20px 24px;
            max-height: 400px;
        }
        /* 资讯版块 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .news-card {
            background: white;
            border-radius: 20px;
            padding: 24px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        }
        .news-date {
            color: #2B6FDF;
            font-size: 14px;
            margin-bottom: 12px;
            font-weight: 500;
        }
        .news-card h4 {
            font-size: 18px;
            margin-bottom: 12px;
        }
        .news-card p {
            color: #6a7a8a;
            font-size: 14px;
        }
        /* 友情链接 */
        .friend-links {
            background: #eef4fa;
            border-radius: 24px;
            padding: 32px 40px;
        }
        .friend-links h3 {
            font-size: 20px;
            margin-bottom: 20px;
            color: #1a2a3a;
        }
        .link-group {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }
        .link-group a {
            color: #4a5a6a;
        }
        .link-group a:hover {
            color: #2B6FDF;
        }
        /* Footer */
        .footer {
            background: #1a2a3a;
            color: #aab4c0;
            padding: 60px 0 30px;
        }
        .footer .container {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
        }
        .footer-logo p {
            margin-top: 16px;
            font-size: 14px;
            line-height: 1.6;
        }
        .footer-links h4, .footer-nav h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 18px;
        }
        .footer-links a, .footer-nav a {
            display: block;
            color: #aab4c0;
            margin-bottom: 12px;
            font-size: 14px;
        }
        .footer-links a:hover, .footer-nav a:hover {
            color: white;
        }
        .keywords {
            margin-top: 40px;
            padding-top: 30px;
            border-top: 1px solid #2a3a4a;
            text-align: center;
            font-size: 13px;
            color: #7a8a9a;
        }
        @media (max-width: 768px) {
            .header .container { flex-direction: column; gap: 16px; }
            .nav { gap: 24px; }
            .hero h2 { font-size: 32px; }
            .section { padding: 48px 0; }
            .footer .container { grid-template-columns: 1fr; gap: 32px; }
            .stats { gap: 30px; }
        }
    </style>