:root{
  --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;
  --space-10:128px;

  /* Layout — deck geometry doubled to a 1920x1080 canvas */
  --slide-width:1920px;
  --slide-height:1080px;
  --slide-margin-x:110px;   /* deck copy starts at x=55 on 960 */
  --slide-margin-y:100px;
  --column-gap:64px;
  --stack-gap:20px;         /* gap between stacked tagline lines */
}