/* A small shared scale keeps grouped information compact and page rhythm calm.
   Breakpoints live beside layout rules: 720px for columns, 480px for controls.
   CSS variables cannot be used in standard media-query conditions. */
:root {
  --color-paper: #fafbf9;
  --color-surface: #f0f4f4;
  --color-ink: #25343b;
  --color-muted: #596a72;
  --color-accent: #2b5e72;
  --color-rule: #d6dfe1;
  --color-focus: #116b90;
  --font-body: system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-heading: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --radius: 5px;
  --content-width: 1040px;
  --text-width: 72ch;
  --text-small: 0.8125rem;
}