:root{
--radius-xs:3px;--radius-sm:6px;--radius-md:10px;--radius-lg:18px;--radius-xl:28px;--radius-pill:999px;--radius-circle:50%;
--border-width-hair:1px;--border-width-thick:2px;--border-width-rule:3px;

/* Shadows are warm-tinted and shallow: paper on limestone, never floating glass */
--shadow-xs:0 1px 2px rgba(34,31,26,.06);
--shadow-sm:0 1px 3px rgba(34,31,26,.07),0 1px 1px rgba(34,31,26,.04);
--shadow-md:0 4px 14px rgba(34,31,26,.08),0 1px 2px rgba(34,31,26,.05);
--shadow-lg:0 18px 44px rgba(6,34,47,.13),0 2px 6px rgba(34,31,26,.06);
--shadow-inset-hair:inset 0 0 0 1px var(--border-subtle);
--shadow-inset-press:inset 0 2px 4px rgba(6,34,47,.16);
--focus-ring:0 0 0 3px rgba(46,156,196,.38);
}