:root {
  color-scheme: light dark;
  font-family: "SF Pro Text", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --link: #0066cc;
  --bg: #ffffff;
  --border: #d2d2d7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #f5f5f7;
    --muted: #a1a1a6;
    --link: #2997ff;
    --bg: #000000;
    --border: #424245;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 24px;
}

h1 {
  font-size: 2rem;
  margin: 0 0 8px;
}

h2 {
  font-size: 1.25rem;
  margin: 32px 0 12px;
}

p,
li {
  color: var(--text);
}

.muted {
  color: var(--muted);
}

a {
  color: var(--link);
}

footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em;
}