:root {
  /* Slide geometry (1280×720 reference frame, from PPTX layouts) */
  --slide-w: 1280px;
  --slide-h: 720px;
  --slide-margin-x: 59px;        /* left/right content edge */
  --slide-title-y: 37px;         /* title block top */
  --slide-rule-top-y: 97px;      /* orange hairline under title */
  --slide-rule-bottom-y: 662px;  /* orange hairline above footer */

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;

  /* Shape */
  --radius-none: 0px;            /* the brand uses square corners throughout */
  --rule-weight: 1.5px;          /* orange hairlines */
}