:root{color-scheme:dark;--bg:#0b0c10;--card:#15171d;--line:#2b2e38;--text:#f5f5f7;--muted:#9da2b2;--accent:#d04a65;--ok:#55c692;--bad:#ff7b7b}
.warning{color:#ffc971;background:#2d2412;border:1px solid #6e5420;border-radius:12px;padding:12px}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at 80% 0,#311824 0,transparent 35%),var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif}
main{width:min(760px,100%);margin:auto;padding:34px 16px 80px}header{padding:26px 4px 20px}h1{font-size:42px;margin:8px 0}h2{font-size:20px;margin:0 0 20px}.eyebrow{color:#f08ba0;letter-spacing:.16em;font-size:12px}p,small{color:var(--muted);line-height:1.7}.card{background:rgba(21,23,29,.94);border:1px solid var(--line);border-radius:18px;padding:22px;margin:14px 0;box-shadow:0 14px 45px rgba(0,0,0,.2)}label{display:grid;gap:8px;margin:12px 0}input,textarea{width:100%;background:#0e1015;border:1px solid var(--line);border-radius:12px;color:var(--text);padding:13px;font:inherit}button{border:0;border-radius:12px;background:var(--accent);color:white;padding:13px 18px;font-weight:700;font-size:15px;cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}.question{padding:18px 0;border-top:1px solid var(--line)}.question:first-child{border-top:0}.question strong{display:block;margin-bottom:12px}.option{display:flex;grid-template-columns:auto 1fr;align-items:center;gap:8px;color:#d8dae2;margin:8px 0}.option input{width:auto}.result{min-height:1.4em}.ok{color:var(--ok)}.bad{color:var(--bad)}.locked{opacity:.48;pointer-events:none}.unlocked{opacity:1;pointer-events:auto}.upload{border-top:1px solid var(--line);padding:14px 0}.upload:first-of-type{border-top:0}.code{font-size:24px;font-weight:800;letter-spacing:.08em;padding:18px;background:#0e1015;border-radius:12px;margin:12px 0}.success{background:#10291f;border:1px solid #286a4e;border-radius:14px;padding:18px;margin-top:16px}.success b{font-size:24px;color:#8ce0b9}