.scroll-scene {
  position: relative;
  overflow-anchor: none;
}
.scroll-stage {
  position: relative;
  min-height: 100svh;
  overflow: clip;
}
.scroll-active {
  height: calc(100svh + var(--scroll-travel, 2)*100svh);
}
.scroll-active .scroll-stage {
  position: sticky;
  top: 0;
  height: 100svh;
}