:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #1b1b1f;
  --muted: #6b7280;
  --brand: #2563eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0b0c;
    --fg: #e5e7eb;
    --muted: #9ca3af;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.5 -apple-system, system-ui, Segoe UI, Roboto, sans-serif;
}

.site-header {
  padding: 48px 20px 16px;
  border-bottom: 1px solid color-mix(in oklab, var(--fg) 12%, transparent);
}

.site-header h1 {
  margin: 0 0 6px;
  font-size: 28px;
}

.tagline {
  margin: 0;
  color: var(--muted);
}

.nav {
  display: flex;
  gap: 14px;
  padding: 10px 20px;
  border-bottom: 1px solid color-mix(in oklab, var(--fg) 12%, transparent);
}

.nav a {
  color: var(--brand);
  text-decoration: none;
}

main {
  max-width: 960px;
  margin: 24px auto;
  padding: 0 20px;
}

code {
  background: color-mix(in oklab, var(--fg) 8%, transparent);
  padding: 2px 6px;
  border-radius: 4px;
}