:root{
/* Warm, low, brown-black shadows — paper resting on paper, never grey UI drop shadows. */
--shadow-0:none;
--shadow-1:0 1px 2px rgba(48,34,20,.06);
--shadow-2:0 2px 6px rgba(48,34,20,.08), 0 1px 1px rgba(48,34,20,.04);
--shadow-3:0 8px 20px rgba(48,34,20,.10), 0 2px 4px rgba(48,34,20,.05);
--shadow-4:0 18px 44px rgba(30,20,10,.18);
--shadow-inset-line:inset 0 0 0 1px var(--line-hairline);
--shadow-gold-ring:0 0 0 1px var(--line-gold);
--focus-ring:0 0 0 2px var(--paper-000), 0 0 0 4px rgba(188,148,64,.70);
}