:root { color-scheme: light; --bg: #f4f3ef; --card: #ffffff; --line: #dddcd6; --ink: #0b0b0b; --muted: #52514e; }
@media (prefers-color-scheme: dark) {
  :root { color-scheme: dark; --bg: #121211; --card: #1a1a19; --line: #383835; --ink: #f0efec; --muted: #c3c2b7; }
}
body { font: 16px/1.5 system-ui, sans-serif; margin: 0; background: var(--bg); color: var(--ink); }
main { max-width: 720px; margin: auto; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 16px; margin: 12px 0; }
.big { font-size: 32px; font-weight: 700; font-variant-numeric: tabular-nums; }
small { color: var(--muted); }