:root {
  --teal: #00897B;
  --teal-dark: #00695C;
  --bg: #FAFAFA;
  --surface: #FFFFFF;
  --text: #1A1C1A;
  --text-muted: #5F6360;
  --border: #E4E7E4;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0F1210;
    --surface: #171B18;
    --text: #E8EAE7;
    --text-muted: #A6ABA6;
    --border: #2A2F2B;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--teal); }
a:hover { color: var(--teal-dark); }

header.site {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

header.site img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
}

header.site .name {
  font-weight: 700;
  font-size: 1.15rem;
}

header.site nav {
  margin-left: auto;
  display: flex;
  gap: 20px;
  font-size: 0.95rem;
}

main.doc {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

main.doc h1 {
  margin-top: 0;
  font-size: 1.9rem;
}

main.doc h2 {
  font-size: 1.25rem;
  margin-top: 2.2em;
  border-top: 1px solid var(--border);
  padding-top: 1.2em;
}

main.doc .meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 2em;
}

main.doc code {
  background: var(--border);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
}

.callout {
  background: color-mix(in srgb, var(--teal) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--teal) 25%, transparent);
  border-radius: 12px;
  padding: 16px 18px;
  margin: 1.5em 0;
}

footer.site {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 32px 24px 48px;
}

footer.site a { color: var(--text-muted); text-decoration: underline; }