:root{
/* Spacing — derived from the brand's line-frame layouts (generous margins, contained frames) */
--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:48px;--space-8:64px;--space-9:96px;
--slide-margin:72px;       /* outer margin on 1280x720 slides */
--frame-inset:28px;        /* inset of the hairline frame from slide edge */
--radius-card:0px;         /* Legacy surfaces are square-cornered */
--radius-pill:999px;
--rule-weight:1px;         /* hairline rules / frames */
--shadow-card:0 10px 30px rgba(7,49,71,.12);
}