<style>
        *{margin:0;padding:0;box-sizing:border-box;font-family:system-ui,sans-serif}
        body{background:#fff;color:#1e1e1e;font-size:18px;line-height:1.5}
        .container{max-width:1280px;margin:0 auto;padding:0 24px}
        header{background:#fff;box-shadow:0 4px 12px rgba(0,0,0,0.02);}
        .header-wrap{display:flex;align-items:center;justify-content:space-between;padding:12px 0;}
        .logo{display:flex;align-items:center;gap:10px;}
        .logo-icon{background:#f90;width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:bold;font-size:24px;}
        nav{display:flex;gap:28px;}
        nav a{text-decoration:none;color:#333;font-size:18px;}
        .btn-download{background:#f90;color:#fff;padding:12px 24px;border-radius:40px;font-weight:600;text-decoration:none;}
        .btn-outline{background:transparent;border:2px solid #f90;color:#f90;padding:12px 28px;border-radius:40px;font-weight:600;text-decoration:none;}
        .section-title{font-size:38px;margin:40px 0 30px;}
        .version-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
        .version-card{background:#fff;border:1px solid #eee;border-radius:32px;padding:32px 20px;text-align:center;}
        .version-icon{background:#f90;width:64px;height:64px;border-radius:24px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;color:#fff;}
        .faq-list details{border-bottom:1px solid #eee;padding:24px 0;}
        .step-row{display:flex;gap:20px;}
        .step{background:#faf5f0;border-radius:28px;padding:28px;flex:1;text-align:center;}
        .step-number{background:#f90;width:56px;height:56px;border-radius:30px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;color:#fff;font-size:28px;}
        footer{background:#1e1e1e;color:#ccc;padding:50px 0;margin-top:60px;}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;}
        .footer-links a{color:#aaa;text-decoration:none;display:block;margin:10px 0;}
        @media(max-width:900px){.version-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:600px){.version-grid{grid-template-columns:1fr}}
    </style>