:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1f2328;
  --heading: #1f2328;
  --muted: #59636e;
  --link: #0969da;
  --rule: #d1d9e0;
  --surface: #f6f8fa;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --fg: #e6edf3;
    --heading: #f0f6fc;
    --muted: #9198a1;
    --link: #4493f8;
    --rule: #3d444d;
    --surface: #161b22;
  }
}

body {
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
  max-width: 46rem;
  background: var(--bg);
  color: var(--fg);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Helvetica,
    Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

#title-block-header {
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--rule);
}

h1.title {
  margin: 0;
  font-family:
    ui-monospace,
    SFMono-Regular,
    "SF Mono",
    Menlo,
    Consolas,
    monospace;
  font-size: 1.5rem;
}

h1,
h2 {
  margin: 2rem 0 0.5rem;
  color: var(--heading);
  font-size: 1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h2 {
  margin-left: 1rem;
  color: var(--muted);
  text-transform: none;
}

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

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

pre {
  overflow-x: auto;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  background: var(--surface);
  line-height: 1.45;
}

body > p,
body > ul,
body > dl,
body > pre {
  margin-left: 1rem;
}

dt {
  margin-top: 1rem;
  font-family:
    ui-monospace,
    SFMono-Regular,
    "SF Mono",
    Menlo,
    Consolas,
    monospace;
  font-size: 0.9rem;
}

dt em {
  color: var(--muted);
}

dd {
  margin-left: 2rem;
}