:root {
  /* ---- Spacing scale (px) ---- */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --space-10: 128px;
  --space-11: 160px;

  /* ---- Layout ---- */
  --content-max-width: 1440px;
  --grid-margin: 96px;       /* wide premium margins */
  --grid-margin-mobile: 24px;
  --grid-gutter: 32px;
  --grid-columns: 12; /* @kind other */

  /* ---- Radii — sharp edges with subtle chamfer only ---- */
  --radius-none: 0px;
  --radius-chamfer: 2px;
  --radius-sm: 3px;

  /* ---- Borders ---- */
  --border-hairline: 1px solid var(--color-border);
  --border-hairline-inverse: 1px solid var(--color-border-inverse);
  --border-strong: 2px solid var(--color-border-strong);
  --border-accent: 2px solid var(--color-accent);

  /* ---- Shadow (minimal — flat industrial cards) ---- */
  --shadow-card: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-card-hover: 0 4px 16px rgba(15, 23, 42, 0.10);
  --shadow-overlap: 0 12px 32px rgba(13, 43, 88, 0.16);

  /* ---- Motion ---- */
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1); /* @kind other */
  --duration-fast: 150ms; /* @kind other */
  --duration-standard: 280ms; /* @kind other */
  --duration-slow: 480ms; /* @kind other */
}