/* Visibility only: keep chapter geometry, pins and native scrolling intact. */
.chapter-focus-item{opacity:var(--chapter-focus-opacity,1);transition:opacity 140ms ease-out}
.chapter-focus-item.is-focus-hidden,.chapter-focus-item.is-focus-hidden *{pointer-events:none!important}
@media(prefers-reduced-motion:reduce){
  .chapter-focus-item{transition:none}
}
@media print{
  .chapter-focus-item{opacity:1!important}
}