*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:#0f111a;color:#fff;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.wrap{width:100%;max-width:480px;text-align:center}
.logo{width:88px;height:88px;border-radius:18px;box-shadow:0 8px 24px rgba(255,77,79,.35);margin-bottom:20px}
h1{font-size:22px;font-weight:700;margin-bottom:6px;line-height:1.3}
.sub{color:#888;font-size:13px;margin-bottom:28px}
.btn{display:block;background:#ff4d4f;color:#fff;padding:16px;border-radius:12px;font-size:18px;font-weight:700;text-decoration:none;margin-bottom:12px;transition:opacity .2s}
.btn:hover{opacity:.88}
.url{background:rgba(255,255,255,.08);border:1px dashed rgba(255,77,79,.5);border-radius:10px;padding:11px 14px;font-family:monospace;font-size:15px;color:#ff4d4f;margin-bottom:24px}
h2{font-size:14px;font-weight:600;color:#ccc;margin-bottom:8px;text-align:left}
.tips{text-align:left;font-size:13px;color:#888;line-height:1.8;border-top:1px solid rgba(255,255,255,.08);padding-top:20px;margin-bottom:24px}
.tips b{color:#bbb}
.content{text-align:left;border-top:1px solid rgba(255,255,255,.08);padding-top:20px;margin-top:4px}
.content h2{margin-top:16px;margin-bottom:6px}
.content p{font-size:13px;color:#888;line-height:1.8;margin-bottom:4px}
.content strong{color:#ccc}
.foot{margin-top:24px;font-size:11px;color:#444;padding-bottom:10px}