:root{color-scheme:dark;font-family:system-ui,"Microsoft YaHei",sans-serif;color:#f4ebd6;background:#102e2b}*{box-sizing:border-box}body{margin:0;min-height:100svh;display:grid;place-items:center;padding:28px 20px;background:radial-gradient(ellipse at 50% 15%,#275049 0,transparent 65%)}.gate{width:min(100%,430px);border:1px solid #bba67555;border-radius:20px;background:#173936;padding:38px 32px;box-shadow:0 25px 80px #0003}.seal{display:grid;place-items:center;width:48px;height:48px;border:1px solid #c5ad7f;border-radius:12px;color:#e6cc98;font-size:27px;font-family:serif}.eyebrow{color:#c5ad7f;font-size:13px;letter-spacing:.12em;margin-top:25px}h1{font-size:clamp(23px,5vw,28px);line-height:1.4;margin:14px 0}.intro{color:#bdc9bf;font-size:14px;line-height:1.9;margin-bottom:28px}label{display:block;font-size:14px;margin-bottom:9px}input,button{width:100%;font:inherit;border-radius:8px;min-height:48px}input{padding:12px;background:#0e2927;border:1px solid #809285;color:#f4ebd6}button{border:0;background:#dbc397;color:#173936;font-weight:700;cursor:pointer}button:disabled{opacity:.6;cursor:wait}input:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid #e6cc98;outline-offset:4px}#error{color:#ffbdad;line-height:1.5;font-size:14px;min-height:21px;margin:10px 0}a{display:block;text-align:center;margin-top:25px;color:#c5cdbf;font-size:13px;text-underline-offset:4px}@media(max-width:420px){.gate{padding:30px 24px}}