:root{
  /* The brand's geometry is bands, circles and squared photo panels.
     Radii stay small; the only large curve is the full circle. */
  --radius-0:0px; --radius-1:2px; --radius-2:4px; --radius-3:8px; --radius-4:12px;
  --radius-pill:999px; --radius-circle:50%;
  --border-w-hairline:1px; --border-w-strong:2px; --border-w-band:4px;
}