/* Uniform three-column grid, images fitted and centred in a fixed cell.
   Proven in the Favorites build. Images keep their aspect ratio. NEVER crop. */
:root{
  --measure:62ch; /* @kind spacing */

  /* Grid cell — 500px square box, image fitted inside it.
     --grid-w is 3*cell + 2*gutter and must be kept in step with them;
     collection.css overrides all four together at each breakpoint. */
  --cell:500px;
  --grid-gutter:64px;
  --grid-w:1628px;
  --grid-row-gap:var(--s-8);
  --page-max:1680px;

  --radius:0px;         /* nothing is rounded except the 4px specimen panels */
  --radius-panel:4px;
  --border-hairline:1px solid var(--rule);
  --shadow:none;        /* there is no shadow system */

  --nav-h:72px;
  --thumb-w:500px;
  --lightbox-max:2560px;
  --lockup-min:180px;
}