:root {
  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 22px;
  --space-6: 28px;
  --space-7: 40px;
  --space-8: 56px;
  --space-9: 72px;

  /* Radii — soft, never pill. The mark uses ~18–28px on its square. */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 18px;
  --radius-mark: 22px;

  /* Elevation — low, cool, navy-tinted. Never black. */
  --shadow-card: 0 1px 3px rgba(20, 32, 58, 0.08);
  --shadow-raised: 0 6px 24px rgba(20, 32, 58, 0.10);

  /* Borders */
  --border-width: 1px;
}