:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #e3e6eb;
  --text: #111827;
  --text-2: #4b5563;
  --muted: #6b7280;
  --accent: #2a78d6;
  --accent-soft: #e6f0fb;
  --accent-text: #1d5fae;
  --on-accent: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1116;
    --surface: #161a21;
    --border: #272d38;
    --text: #e8ebf0;
    --text-2: #b4bcc8;
    --muted: #8a93a3;
    --accent: #3987e5;
    --accent-soft: #14233a;
    --accent-text: #7db4f2;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent-text); }
.bar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; padding: 12px 24px; background: var(--surface); border-bottom: 1px solid var(--border); }
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
.tagline { color: var(--muted); flex: 1; }
.cta { display: inline-block; padding: 8px 16px; border-radius: 6px; background: var(--accent); color: var(--on-accent); font-weight: 600; text-decoration: none; }
main { max-width: 760px; margin: 0 auto; padding: 32px 24px 64px; }
h1 { font-size: 28px; line-height: 1.25; margin: 0 0 8px; }
.lead { color: var(--text-2); margin: 0 0 8px; }
.langs { color: var(--muted); font-size: 14px; }
.toc { display: flex; flex-wrap: wrap; gap: 6px 14px; padding: 16px 0; margin: 0; list-style: none; border-bottom: 1px solid var(--border); font-size: 14px; }
.term { padding: 16px 0; border-bottom: 1px solid var(--border); }
.term h2 { font-size: 18px; margin: 0 0 4px; }
.term h2 a { color: var(--text); text-decoration: none; }
.term p { margin: 0 0 10px; }
.desc { font-weight: 600; }
.docs, .crumbs { color: var(--muted); font-size: 14px; }
.docs-list { padding-left: 20px; }
.section { font-size: 18px; margin: 24px 0 8px; }
.cards { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 16px; }
.card { padding: 16px 20px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.card h2 { font-size: 18px; margin: 0 0 6px; }
.card p { margin: 0; color: var(--text-2); }
.callout { margin-top: 40px; padding: 24px; border: 1px solid var(--border); border-radius: 10px; background: var(--accent-soft); }
.callout h2 { font-size: 20px; margin: 0 0 8px; }