:root{
  --s-1:4px; --s-2:8px; --s-3:12px; --s-4:16px;
  --s-6:24px; --s-8:32px; --s-12:48px;

  /* Softening pass (founder decision): air, not decoration. */
  --card-padding:28px;   /* was --s-6 */
  --card-gap:20px;       /* was --s-4 */
  --section-gap:40px;    /* was --s-8 */
  --control-padding-x:20px;
}