:root{
  --radius-none:0;
  --radius-xs:2px;      /* default: almost square, editorial */
  --radius-sm:4px;      /* inputs, buttons */
  --radius-md:8px;      /* dialogs */
  --radius-pill:999px;  /* filter chips only */
  --radius-image:2px;

  --border-hairline:1px solid var(--line-hairline);
  --border-strong:1px solid var(--line-strong);
  --border-inverse:1px solid var(--line-on-dark);

  /* Shadows: barely there. Never a hard drop shadow. */
  --shadow-none:none;
  --shadow-soft:0 1px 2px rgba(36,29,24,.04),0 8px 24px rgba(36,29,24,.05);
  --shadow-lift:0 2px 4px rgba(36,29,24,.05),0 18px 40px rgba(36,29,24,.08);
  --shadow-dialog:0 24px 64px rgba(36,29,24,.16);
  --ring-focus:0 0 0 2px var(--surface-page),0 0 0 3px var(--focus-ring);
}