:root {
  color-scheme: light dark;
  --bg: #fdfcfa;
  --fg: #1a1a1a;
  --muted: #6b6b6b;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #141414; --fg: #f0f0f0; --muted: #9a9a9a; }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 1.0625rem/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 34rem; margin: 0 auto; padding: 3rem 1rem; }
h1 { font-size: 2rem; line-height: 1.15; margin: 0 0 0.75rem; }
p { margin: 0 0 0.75rem; }
.muted { color: var(--muted); }