:root {
  color-scheme: light dark;
  --bg: #eeede9;
  --fg: #151515;
  --muted: #5f5f63;
  --accent: #4a4ab0;
  --on-accent: #fff;
  --code: #f8f7f3;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #141517; --fg: #ededeb; --muted: #9a9aa0; --accent: #9a9ae6; --on-accent: #141517; --code: #1d1e21; }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.55 system-ui, sans-serif;
}
main { max-width: 40rem; margin: 0 auto; padding: 3rem 1rem; }
h1 { margin-top: 0; }
h2 { margin-top: 2rem; font-size: 1.3rem; }
pre, code { font-family: ui-monospace, monospace; font-size: 0.9em; }
pre { background: var(--code); padding: 0.75rem 1rem; border-radius: 6px; overflow-x: auto; }
.muted { color: var(--muted); }
button {
  font: inherit;
  padding: 0.6rem 1.2rem;
  margin-right: 0.5rem;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: var(--on-accent);
  cursor: pointer;
}
button.secondary { background: transparent; color: var(--accent); }