.stack{--stage:max(100svh, 620px);position:relative}.stack__sec{height:var(--sec-h,calc(var(--stage) * 2));position:relative}.stack__sec+.stack__sec{margin-top:calc(var(--stage) * -1)}.stack__layer{top:var(--pin,0px);min-height:var(--stage);position:sticky;overflow:hidden}.stack__slab{transform:rotate(var(--rot,0deg)) scale(var(--cover,1));transform-origin:0 0;will-change:transform;backface-visibility:hidden;filter:brightness();transition:filter .3s;position:relative}.stack__layer:hover .stack__slab{filter:brightness(1.02)}.stack__slab>*{min-height:var(--stage)}@media (prefers-reduced-motion:reduce){.stack__slab{transition:none;transform:none;filter:brightness()!important}.stack__layer:hover .stack__slab{filter:brightness()}}