/* ============================================================
   1hour (원아워) — Shadows & Elevation
   Four neutral steps dropped from cool ink, plus one mint glow
   reserved for primary CTAs ("the action you should take").
   No inner shadows. No colored shadows other than the mint glow.
   ============================================================ */
:root {
  --shadow-xs:   0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm:   0 2px 6px rgba(0, 0, 0, 0.06);
  --shadow-md:   0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg:   0 24px 48px -12px rgba(0, 0, 0, 0.18);
  --shadow-mint: 0 12px 32px -8px rgba(16, 185, 167, 0.35);
}