:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  line-height: 1.6;
  --accent: #2468a9;
  --surface: color-mix(in srgb, Canvas 94%, var(--accent) 6%);
  --border: color-mix(in srgb, CanvasText 15%, transparent);
}

* { box-sizing: border-box; }
body { margin: 0; background: Canvas; color: CanvasText; }
header, main, footer { width: min(760px, calc(100% - 40px)); margin: 0 auto; }
header { padding: 56px 0 24px; }
main { padding-bottom: 56px; }
footer { border-top: 1px solid var(--border); padding: 20px 0 40px; color: GrayText; }
h1 { margin: 0 0 8px; font-size: clamp(2rem, 7vw, 3.5rem); line-height: 1.08; }
h2 { margin-top: 2rem; font-size: 1.25rem; }
p, li { max-width: 68ch; }
a { color: var(--accent); }
nav { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.language { display: flex; align-items: center; gap: 10px; margin-top: 20px; color: GrayText; }
.language select { font: inherit; color: CanvasText; background: Canvas; border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; }
nav a, .card { border: 1px solid var(--border); border-radius: 16px; padding: 14px 18px; background: var(--surface); }
nav a { text-decoration: none; font-weight: 600; }
.card { margin: 18px 0; }
.eyebrow { color: var(--accent); font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.muted { color: GrayText; }
code { font-family: ui-monospace, "SF Mono", monospace; }