:root{
  /* The brand is squarish-soft: generous radii on cards and pills, never fully round
     except on avatars, coins and the pill CTA. */
  --radius-xs:6px;
  --radius-sm:10px;
  --radius-md:16px;
  --radius-lg:24px;
  --radius-xl:32px;
  --radius-card:20px;
  --radius-app-icon:24%;   /* squircle-ish app icon */
  --radius-pill:999px;

  --border-width-hairline:1px;
  --border-width-regular:2px;
  --border-width-bold:3px;   /* outline style used in brand illustration */
}