:root{
  /* Soft, low-contrast, green-tinted shadows — never grey/black hard drops */
  --shadow-xs:0 1px 2px rgba(10,19,16,.05);
  --shadow-sm:0 1px 3px rgba(10,19,16,.06),0 1px 2px rgba(10,19,16,.04);
  --shadow-md:0 4px 12px rgba(10,19,16,.07),0 1px 3px rgba(10,19,16,.04);
  --shadow-lg:0 12px 32px rgba(10,19,16,.09),0 2px 8px rgba(10,19,16,.04);
  --shadow-xl:0 28px 64px rgba(10,19,16,.13),0 6px 16px rgba(10,19,16,.05);
  --shadow-brand:0 10px 26px rgba(20,147,101,.24);
  --shadow-inset-hair:inset 0 0 0 1px var(--border-subtle);
  --shadow-inset-top:inset 0 1px 0 rgba(255,255,255,.6);
  --ring-focus:0 0 0 3px rgba(20,147,101,.22);
  --ring-focus-danger:0 0 0 3px rgba(226,84,58,.22);
}