/* Grid — CSS alone, no script: the stage's own grid, centred in its cell */
.bsl-iso.is-grid .bsl-iso-stage {
  display: grid;
  grid-template-columns: repeat(var(--bsl-iso-cols), minmax(0, 1fr));
  gap: var(--bsl-iso-gap, 10px);
  align-items: center;
}