:root{
  --font-sans:'Source Sans 3','Segoe UI',system-ui,-apple-system,sans-serif;
  --font-mono:'IBM Plex Mono','SFMono-Regular',ui-monospace,'Menlo',monospace;

  /* Weights */
  --fw-regular:400; /* @kind font */
  --fw-medium:500; /* @kind font */
  --fw-semibold:600; /* @kind font */
  --fw-bold:700; /* @kind font */
  --fw-black:900; /* @kind font */

  /* Type scale (1.25 major-third-ish, tuned for institutional density) */
  --fs-display:3rem;     /* 48 */
  --fs-h1:2.25rem;       /* 36 */
  --fs-h2:1.75rem;       /* 28 */
  --fs-h3:1.375rem;      /* 22 */
  --fs-h4:1.125rem;      /* 18 */
  --fs-body-lg:1.125rem; /* 18 */
  --fs-body:1rem;        /* 16 */
  --fs-body-sm:0.875rem; /* 14 */
  --fs-caption:0.75rem;  /* 12 */

  --lh-tight:1.15; /* @kind font */
  --lh-snug:1.3; /* @kind font */
  --lh-normal:1.55; /* @kind font */
  --lh-relaxed:1.7; /* @kind font */

  --ls-tight:-0.01em;
  --ls-normal:0; /* @kind font */
  --ls-wide:0.04em;      /* eyebrows / labels */
}