:root{
  --radius-field:10px;   /* fields, chips, avatar */
  --radius:12px;         /* buttons, cards (shadcn --radius) */
  --radius-sheet:16px;   /* sheets, dialogs */
  --radius-pill:999px;   /* nav pills, filter chips */
  --radius-tile:22%;     /* steel tiles */
  --radius-public-field:14px; /* 56 px fields on the steel hero */
  --radius-photo:0;      /* photos are evidence: square */
}