:root {
  --bg: #0b1120;
  --card: #141c2f;
  --text: #f2f5fa;
  --muted: #a9b4c7;
  --line: #2c3953;
  --accent: #4f8cff;
  --error: #ff8a8a;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f3f5f9; --card: #ffffff; --text: #111827; --muted: #4b5563; --line: #cbd2dd; --accent: #1d5fd6; --error: #b42318; color-scheme: light; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.page { max-width: 34rem; margin: 0 auto; padding: 16px 16px 40px; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; margin: 0; font-weight: 750; font-size: 1.15rem; letter-spacing: -.01em; }
h1 { font-size: 1.4rem; margin: 8px 0 16px; }
h2 { font-size: 1.15rem; margin: 0 0 8px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 16px; margin-bottom: 16px; }
label { display: block; margin: 14px 0 6px; font-weight: 600; }
input[type=text], input[type=url], input[type=password] {
  width: 100%; min-height: 48px; padding: 10px 12px; font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--line); border-radius: 10px;
}
input:focus-visible, button:focus-visible, select:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
input[aria-invalid=true] { border-color: var(--error); }
#codeInput { font-size: 1.4rem; letter-spacing: .12em; text-transform: uppercase; }
fieldset { border: 0; margin: 12px 0 0; padding: 0; }
legend { font-weight: 600; margin-bottom: 6px; }
.choice { display: flex; align-items: center; gap: 10px; font-weight: 400; margin: 6px 0; min-height: 44px; }
.choice input { width: 22px; height: 22px; }
button { font: inherit; border-radius: 10px; min-height: 48px; padding: 10px 18px; cursor: pointer; }
.primary { width: 100%; margin-top: 18px; background: var(--accent); color: #fff; border: 0; font-weight: 700; }
.primary:disabled { opacity: .6; }
.secondary, .lang { background: transparent; color: var(--text); border: 1px solid var(--line); }
.lang { min-height: 40px; padding: 6px 10px; font: inherit; font-size: .9rem; border-radius: 10px; max-width: 45%; }
select.lang { appearance: auto; background: var(--card); }
.muted, .hint, .privacy, .foot { color: var(--muted); }
.hint { font-size: .9rem; margin: 6px 0 0; }
.privacy { font-size: .9rem; margin: 16px 0 0; }
.error { color: var(--error); font-weight: 600; margin: 10px 0 0; }
.sas { font-size: 2.6rem; font-weight: 800; letter-spacing: .3em; text-align: center; margin: 12px 0; font-variant-numeric: tabular-nums; }
.foot { font-size: .85rem; text-align: center; }
[hidden] { display: none !important; }