:root{--bg:#f5f5f7;--card:#fff;--fg:#1d1d1f;--muted:#6e6e73;--hair:#d2d2d7;--accent:#0071e3;--accent-hover:#0058b0;--tint:#e5f0fd;--ok:#0b7a3b;--okbg:#e3f4ea;--bad:#c00019}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.4 -apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Helvetica Neue",Helvetica,Arial,sans-serif;letter-spacing:-0.022em;-webkit-font-smoothing:antialiased}
.page{max-width:480px;margin:0 auto;padding:40px 20px 32px;min-height:100vh;display:flex;flex-direction:column;gap:22px}
h1{margin:0;font-size:34px;line-height:1.08;font-weight:700;letter-spacing:-0.035em;text-wrap:balance}
p{margin:0}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.brand{display:inline-flex;align-items:center;gap:8px;font-weight:700;letter-spacing:-0.03em}
.mark{width:24px;height:24px;border-radius:7px;background:var(--accent);display:grid;place-items:center;color:#fff}
.form{display:grid;gap:22px}
.intro{display:grid;gap:10px}
.sub{color:var(--muted)}
.hint{font-size:13px;color:var(--muted)}
.opts{border:0;margin:0;padding:0;display:grid;gap:12px;min-width:0}
.opt{background:var(--card);border-radius:22px;padding:18px;display:grid;gap:14px;position:relative;box-shadow:0 0 0 1px rgba(0,0,0,.04)}
.opt:has(input[type=radio]:checked){box-shadow:0 0 0 2px var(--accent)}
.head{display:grid;grid-template-columns:44px 1fr 22px;gap:14px;align-items:center;cursor:pointer;min-height:44px}
.head input{position:absolute;opacity:0;width:1px;height:1px}
.head:has(input:focus-visible){outline:3px solid rgba(0,113,227,.4);outline-offset:4px;border-radius:12px}
.ico{width:44px;height:44px;border-radius:12px;background:var(--tint);color:var(--accent);display:grid;place-items:center}
.head b{display:block;font-size:19px;font-weight:600;letter-spacing:-0.02em}
.head small{display:block;font-size:14px;color:var(--muted)}
.dot{width:22px;height:22px;border-radius:50%;border:2px solid #c7c7cc}
.opt:has(input[type=radio]:checked) .dot{border:7px solid var(--accent)}
.more{display:none;gap:10px}
.opt:has(input[type=radio]:checked) .more{display:grid}
label{font-size:15px;font-weight:500}
input[type=text],input[type=email]{min-height:50px;border-radius:12px;border:1px solid var(--hair);padding:0 14px;font:inherit;width:100%;background:#fff;color:var(--fg);-webkit-appearance:none;appearance:none}
input[type=text]:focus-visible,input[type=email]:focus-visible{outline:3px solid rgba(0,113,227,.4);outline-offset:1px;border-color:var(--accent)}
input[aria-invalid=true]{border-color:var(--bad)}
.email{display:grid;gap:8px}
.trap{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}
.error{color:var(--bad);font-size:15px;font-weight:500}
.btn{display:flex;align-items:center;justify-content:center;min-height:52px;width:100%;border:0;border-radius:999px;background:var(--accent);color:#fff;font:inherit;font-weight:600;cursor:pointer}
.btn:hover{background:var(--accent-hover)}
.btn:focus-visible{outline:3px solid rgba(0,113,227,.4);outline-offset:3px}
.btn[disabled]{opacity:.6;cursor:default}
.done{display:grid;gap:14px;justify-items:start;padding-top:12px}
.done:focus{outline:0}
.tick{width:48px;height:48px;border-radius:50%;background:var(--okbg);color:var(--ok);display:grid;place-items:center}
[hidden]{display:none!important}
.foot{margin-top:auto;text-align:center;font-size:13px;color:var(--muted)}
@media (prefers-color-scheme:dark){
  :root{--bg:#000;--card:#1c1c1e;--fg:#f5f5f7;--muted:#a1a1a6;--hair:#3a3a3c;--accent:#2997ff;--accent-hover:#5ab0ff;--tint:#10253d;--ok:#5fd68a;--okbg:#12301f;--bad:#ff6b6b}
  input[type=text],input[type=email]{background:#2c2c2e}
  .opt{box-shadow:0 0 0 1px rgba(255,255,255,.06)}
  .btn{color:#001428}
  .dot{border-color:#636366}
  .mark{color:#001428}
}