<style>
        *{margin:0;padding:0;box-sizing:border-box;}
        body{font-family:'Segoe UI','PingFang SC',sans-serif;background:#f8faff;color:#1e2a3e;}
        .container{max-width:1400px;margin:0 auto;padding:0 32px;}
        .header{background:#fff;box-shadow:0 1px 0 #eef2f6;position:sticky;top:0;z-index:100;}
        .nav-bar{display:flex;justify-content:space-between;align-items:center;padding:16px 0;flex-wrap:wrap;}
        .logo-area{display:flex;align-items:center;gap:10px;}
        .logo-icon{background:#0066ff;width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:bold;font-size:20px;}
        .logo-text h1{font-size:1.8rem;font-weight:700;background:linear-gradient(135deg,#0066ff,#00a6ff);-webkit-background-clip:text;background-clip:text;color:transparent;}
        .nav-links{display:flex;gap:32px;align-items:center;}
        .nav-links a{text-decoration:none;font-weight:500;color:#2c3e50;transition:0.2s;}
        .nav-links a:hover,.nav-links .active{color:#0066ff;}
        .btn-download-mini{background:#0066ff;color:#fff;padding:8px 20px;border-radius:40px;}
        .btn-primary{background:#0066ff;color:#fff;border:none;padding:14px 40px;border-radius:60px;font-size:1.2rem;font-weight:600;cursor:pointer;display:inline-block;text-decoration:none;box-shadow:0 8px 20px rgba(0,102,255,0.3);transition:0.2s;}
        .btn-primary:hover{background:#0052cc;transform:translateY(-3px);}
        .download-section{background:#fff;border-radius:48px;padding:48px;margin:60px 0;text-align:center;}
        .platform-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px;margin:48px 0;}
        .platform-card{background:#f8faff;border-radius:32px;padding:32px;transition:0.2s;border:1px solid #eef2ff;}
        .platform-card h3{font-size:1.8rem;margin:16px 0 8px;}
        .btn-down{background:#0066ff;color:#fff;padding:10px 24px;border-radius:40px;display:inline-block;margin-top:20px;text-decoration:none;font-weight:600;}
        .faq-item{background:#fff;border-radius:20px;margin-bottom:16px;border:1px solid #e9edf2;}
        .faq-question{background:none;font-weight:600;padding:20px 28px;cursor:pointer;width:100%;text-align:left;font-size:1.1rem;border:none;display:flex;justify-content:space-between;}
        .faq-answer{padding:0 28px 20px 28px;color:#4a5b6e;display:none;line-height:1.5;}
        .faq-item.active .faq-answer{display:block;}
        .extra-download{background:linear-gradient(110deg,#0066ff,#3b82f6);border-radius:48px;padding:48px;text-align:center;color:#fff;margin:60px 0;}
        .footer{background:#0f172a;color:#cbd5e1;padding:48px 0 32px;margin-top:60px;}
        .keyword-tags{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0;}
        .keyword-tags a{background:#1e293b;padding:6px 16px;border-radius:40px;color:#94a3b8;text-decoration:none;font-size:0.85rem;}
        @media (max-width:800px){.container{padding:0 20px;}}
    </style>