:root{
/* Deck & artifact charts only. The app's Usage chart stays single-hue Prussian Blue.
   Series order is fixed so two decks never disagree. */
--chart-1:#003153;   /* Prussian Blue — the subject, always series 1 */
--chart-2:#1A6FA0;   /* Light Prussian */
--chart-3:#40826D;   /* Verdigris */
--chart-4:#DAA520;   /* Refine Gold */
--chart-muted:rgba(0,49,83,0.28);  /* comparison / "everyone else" bars */
--chart-grid:rgba(0,49,83,0.08);
--chart-baseline:rgba(0,49,83,0.22);
--chart-label:#6B6B68;
}