:root{
  /* Warm-tinted shadows — never neutral black */
  --shadow-hairline:0 1px 0 rgba(48,43,38,.06);
  --shadow-sm:0 1px 2px rgba(48,43,38,.06),0 2px 6px -2px rgba(48,43,38,.08);
  --shadow-md:0 2px 4px rgba(48,43,38,.05),0 10px 24px -8px rgba(48,43,38,.14);
  --shadow-lg:0 4px 8px rgba(48,43,38,.05),0 22px 48px -14px rgba(48,43,38,.20);
  --shadow-inner:inset 0 1px 2px rgba(48,43,38,.08);
  --shadow-focus:var(--focus-ring);
  --border-hairline:1px solid var(--border-subtle);
}