:root{
/* ── Scale: multiples of 8 ──────────────── */
--s-1:8px;--s-2:16px;--s-3:24px;--s-4:32px;
--s-5:48px;--s-6:64px;--s-7:96px;--s-8:128px;

/* ── Slide geometry · 1920 × 1080 ───────── */
--slide-pad-x:104px;
--slide-pad-top:80px;
--slide-pad-bottom:168px;   /* reserved so content never meets the footer */
--chrome-offset:76px;        /* footer baseline from the bottom edge */
--mark-size:104px;           /* fox mark, top-left */

/* ── Print geometry ─────────────────────── */
--page-pad-x:0.8in;
--page-pad-y:0.62in;
--page-mark:0.4in; /* @kind spacing */

/* ── Rules ──────────────────────────────── */
--rule-w:1px;
--rule-heavy:2.5px;
--rule-accent-len:88px;      /* the short ink rule under a title */

/* ── Radius & elevation: there is none ──── */
--radius:0;
--shadow:none;

/* ── Motion: fades only, never movement ─── */
--ease:cubic-bezier(0.4,0,0.2,1); /* @kind other */
--dur-fast:120ms; /* @kind other */
--dur:200ms; /* @kind other */
}