/* Horizontal alignment is measured by scene-space-alignment.js from the actual
   collapsed rail and copy column. Preserve the chapter's artwork scale. */
.lesson-mode .construction-sketch-workspace:not(.ex-workspace) .lesson-svg {
  min-width: 0;
  transform: none;
}
.construction-sketch-workspace:not(.ex-workspace) .object-toolbar {
  left: 50%;
  margin-left: 0;
  transform: translateX(-50%);
}