:root{
  --radius-pill:999px;   /* all CTAs are pill-shaped */
  --radius-xs:2px;
  --radius-sm:4px;       /* cards, inputs — established, not playful */
  --radius-md:8px;
  --radius-lg:12px;      /* photo frames only */
  --radius-circle:50%;   /* icon containers */
  --border-width:1px; /* @kind spacing */
  --border-width-strong:2px; /* @kind spacing */
  --rule-accent:3px; /* @kind spacing */     /* gold rule under section headings */
  --icon-stroke:1.5; /* @kind other */     /* line icons only, never filled */
}