/* Restored page-fold motion: no scroll-frame calculations, so the lower sections stay smooth. */
.reveal{position:relative;opacity:0;transform:perspective(1500px) rotateX(-44deg) translateY(78px) scale(.975);transform-origin:50% 0;filter:brightness(.74);will-change:transform,opacity,filter;transition:opacity .48s ease,transform 1.05s cubic-bezier(.16,.9,.2,1),filter .8s ease}
.reveal:after{content:"";position:absolute;z-index:-1;left:3%;right:3%;top:0;height:42%;border-radius:24px;background:linear-gradient(180deg,#0900218c,transparent);transform:translateZ(-1px);opacity:.72;transition:opacity .75s ease}
.reveal.is-visible{opacity:1;transform:perspective(1500px) rotateX(0) translateY(0) scale(1);filter:none}.reveal.is-visible:after{opacity:0}
@media(max-width:720px){.reveal{transform:perspective(1200px) rotateX(-30deg) translateY(48px) scale(.98)}}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;filter:none}.reveal:after{display:none}}