<style>
        *{margin:0;padding:0;box-sizing:border-box;}
        body{font-family:'Segoe UI','Microsoft YaHei',sans-serif;background:#f5f7fa;color:#1e1f2a;line-height:1.6;font-size:16px;}
        a{text-decoration:none;color:inherit;}
        .container{max-width:1280px;margin:0 auto;padding:0 24px;}
        /* Header */
        .header{background:#fff;box-shadow:0 2px 12px rgba(0,0,0,0.04);position:sticky;top:0;z-index:100;}
        .header-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 0;flex-wrap:wrap;}
        .logo-area{display:flex;align-items:center;gap:12px;}
        .logo-icon{width:44px;height:44px;background:linear-gradient(135deg,#1890ff,#0066cc);border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:20px;}
        .logo-text{font-size:24px;font-weight:700;color:#1e1f2a;}
        .logo-text span{color:#1890ff;}
        .nav-menu{display:flex;gap:36px;font-size:18px;font-weight:500;}
        .nav-menu a:hover{color:#1890ff;}
        .btn-download-sm{background:#1890ff;color:#fff;padding:10px 24px;border-radius:30px;font-weight:600;font-size:16px;transition:all 0.2s;}
        .btn-download-sm:hover{background:#0066cc;}
        .menu-toggle{display:none;font-size:28px;cursor:pointer;}
        /* Banner */
        .banner{background:linear-gradient(145deg,#0a1628 0%,#1a2a4a 100%);color:#fff;padding:72px 0 80px;}
        .banner h1{font-size:48px;font-weight:800;line-height:1.2;margin-bottom:24px;}
        .banner h1 span{color:#1890ff;}
        .banner p{font-size:20px;opacity:0.9;max-width:700px;margin-bottom:36px;}
        .banner-btns{display:flex;gap:20px;margin-bottom:48px;}
        .btn-primary{background:#1890ff;color:#fff;padding:16px 40px;border-radius:40px;font-weight:700;font-size:18px;transition:all 0.2s;}
        .btn-primary:hover{background:#0066cc;}
        .btn-outline{border:2px solid rgba(255,255,255,0.3);color:#fff;padding:16px 40px;border-radius:40px;font-weight:700;font-size:18px;transition:all 0.2s;}
        .btn-outline:hover{background:rgba(255,255,255,0.1);border-color:#fff;}
        .stats{display:flex;gap:48px;}
        .stat-item{text-align:center;}
        .stat-num{font-size:32px;font-weight:800;}
        .stat-label{opacity:0.75;font-size:16px;}
        .stars{color:#ffc107;font-size:22px;letter-spacing:2px;}
        /* Section通用 */
        .section{padding:72px 0;}
        .section-title{font-size:36px;font-weight:700;text-align:center;margin-bottom:16px;}
        .section-subtitle{font-size:18px;text-align:center;color:#666;margin-bottom:48px;}
        /* 功能卡片 */
        .feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
        .feature-card{background:#fff;border-radius:20px;padding:32px 24px;box-shadow:0 4px 20px rgba(0,0,0,0.04);transition:transform 0.2s;}
        .feature-card:hover{transform:translateY(-4px);}
        .feature-icon{width:56px;height:56px;background:#e6f0ff;border-radius:16px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:#1890ff;font-size:28px;font-weight:700;}
        .feature-card h3{font-size:22px;font-weight:700;margin-bottom:12px;}
        .feature-card p{color:#555;font-size:16px;}
        /* 版本下载 */
        .platform-grid{display:flex;justify-content:center;gap:40px;flex-wrap:wrap;margin-bottom:48px;}
        .platform-card{background:#fff;border-radius:20px;padding:36px 40px;box-shadow:0 4px 20px rgba(0,0,0,0.04);text-align:center;min-width:220px;}
        .platform-icon{font-size:48px;margin-bottom:16px;}
        .platform-card h4{font-size:22px;font-weight:700;margin-bottom:8px;}
        .platform-desc{color:#666;margin-bottom:20px;font-size:15px;}
        .btn-platform{background:#1890ff;color:#fff;padding:12px 28px;border-radius:30px;font-weight:600;display:inline-block;}
        /* 版本对比 */
        .pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
        .pricing-card{background:#fff;border-radius:24px;padding:36px 24px;box-shadow:0 4px 24px rgba(0,0,0,0.04);text-align:center;position:relative;}
        .pricing-card.featured{border:2px solid #1890ff;}
        .pricing-name{font-size:26px;font-weight:700;margin-bottom:8px;}
        .pricing-price{font-size:28px;font-weight:800;color:#1890ff;margin-bottom:16px;}
        .pricing-desc{color:#666;margin-bottom:24px;font-size:16px;}
        .pricing-features{list-style:none;text-align:left;margin-bottom:28px;}
        .pricing-features li{padding:10px 0;border-bottom:1px solid #eee;font-size:16px;}
        .pricing-features li::before{content:"✓";color:#52c41a;font-weight:700;margin-right:10px;}
        .btn-pricing{background:#1890ff;color:#fff;padding:14px 28px;border-radius:30px;font-weight:700;display:inline-block;width:100%;}
        /* 安装步骤 */
        .steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
        .step-card{background:#fff;border-radius:20px;padding:28px 20px;box-shadow:0 4px 20px rgba(0,0,0,0.04);text-align:center;}
        .step-num{width:52px;height:52px;background:#1890ff;color:#fff;border-radius:52px;display:flex;align-items:center;justify-content:center;font-size:26px;font-weight:800;margin:0 auto 20px;}
        .step-card h4{font-size:22px;font-weight:700;margin-bottom:12px;}
        .step-card p{color:#555;font-size:16px;}
        /* 用户评论 */
        .reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
        .review-card{background:#fff;border-radius:20px;padding:28px;box-shadow:0 4px 20px rgba(0,0,0,0.04);}
        .review-stars{color:#ffc107;font-size:22px;margin-bottom:12px;}
        .review-text{font-size:17px;margin-bottom:16px;color:#333;}
        .review-author{color:#666;font-size:16px;}
        /* FAQ折叠 */
        .faq-list{max-width:900px;margin:0 auto;}
        .faq-item{border-bottom:1px solid #e0e0e0;}
        .faq-question{padding:20px 0;font-size:18px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;}
        .faq-question:hover{color:#1890ff;}
        .faq-answer{padding:0 0 20px 0;color:#555;font-size:16px;display:none;}
        .faq-item.active .faq-answer{display:block;}
        .faq-more{text-align:center;margin-top:40px;}
        /* 教程区 */
        .tutorial-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
        .tutorial-card{background:#fff;border-radius:16px;padding:24px;box-shadow:0 4px 20px rgba(0,0,0,0.04);}
        .tutorial-card h4{font-size:20px;font-weight:700;margin-bottom:8px;}
        .tutorial-card p{color:#666;font-size:16px;}
        /* CTA */
        .cta-box{background:linear-gradient(135deg,#1890ff,#0066cc);border-radius:28px;padding:56px 40px;text-align:center;color:#fff;}
        .cta-box h3{font-size:36px;font-weight:700;margin-bottom:20px;}
        .cta-box .btn-white{background:#fff;color:#1890ff;padding:16px 48px;border-radius:40px;font-weight:700;font-size:18px;display:inline-block;margin-top:16px;}
        /* Footer */
        .footer{background:#1e1f2a;color:#fff;padding:48px 0 28px;}
        .footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:36px;margin-bottom:40px;}
        .footer-col h5{font-size:20px;margin-bottom:20px;}
        .footer-col ul{list-style:none;}
        .footer-col li{margin-bottom:12px;font-size:16px;opacity:0.8;}
        .footer-col li:hover{opacity:1;}
        .footer-bottom{text-align:center;padding-top:28px;border-top:1px solid rgba(255,255,255,0.1);opacity:0.7;font-size:14px;}
        /* 响应式 */
        @media (max-width:768px){
            .nav-menu{display:none;width:100%;flex-direction:column;gap:16px;padding:20px 0;}
            .nav-menu.active{display:flex;}
            .menu-toggle{display:block;}
            .header-inner{flex-wrap:wrap;}
            .btn-download-sm{margin-left:auto;}
            .banner h1{font-size:34px;}
            .stats{flex-wrap:wrap;gap:24px;}
            .feature-grid{grid-template-columns:1fr;}
            .pricing-grid{grid-template-columns:1fr;}
            .steps-grid{grid-template-columns:1fr;}
            .reviews-grid{grid-template-columns:1fr;}
            .footer-grid{grid-template-columns:1fr;}
            .tutorial-grid{grid-template-columns:1fr;}
        }
    </style>