:root{
/* Shadows are cool navy, never neutral grey. Low and wide, like light on water. */
--shadow-none:none;
--shadow-sm:0 1px 2px rgba(0,22,47,.06),0 1px 1px rgba(0,22,47,.04);
--shadow-md:0 4px 16px rgba(0,22,47,.08),0 1px 2px rgba(0,22,47,.05);
--shadow-lg:0 18px 48px rgba(0,22,47,.14),0 2px 6px rgba(0,22,47,.06);
--shadow-inset-line:inset 0 0 0 1px var(--line-hairline);
--focus-ring:0 0 0 2px var(--paper),0 0 0 4px var(--navy-500);
--focus-ring-inverse:0 0 0 2px var(--navy-1000),0 0 0 4px var(--navy-200);
}