:root{
  /* Shadows are cool-tinted (ink, never black) and shallow. */
  --shadow-none:none;
  --shadow-sm:0 1px 2px rgba(16,27,61,.06), 0 1px 1px rgba(16,27,61,.04);
  --shadow-md:0 4px 12px rgba(16,27,61,.08), 0 1px 3px rgba(16,27,61,.05);
  --shadow-lg:0 12px 32px rgba(16,27,61,.12), 0 2px 8px rgba(16,27,61,.06);
  --shadow-xl:0 28px 64px rgba(16,27,61,.18);
  --shadow-inset:inset 0 1px 0 rgba(255,255,255,.6);
  --glow-accent:0 0 0 1px rgba(46,107,250,.28), 0 6px 22px rgba(53,198,242,.28);
  --ring-focus:0 0 0 3px rgba(53,198,242,.45);
  --blur-veil:saturate(140%) blur(14px);
  --veil-light:rgba(255,255,255,.72);
  --veil-dark:rgba(13,23,48,.62);
}