:root{
--shadow-sm:0 1px 2px rgba(20,20,15,0.06);
--shadow-card:0 1px 3px rgba(20,20,15,0.05);
--shadow-card-hover:0 12px 28px rgba(20,20,15,0.10);
--shadow-popover:0 16px 40px rgba(20,20,15,0.16);
--shadow-inset-line:inset 0 -1px 0 var(--line);
}