/* Reveal mechanics only. Each approved page supplies card appearance. */
[data-stack-surface] [data-stack-reveal]{display:grid;grid-template-rows:0fr;transition:grid-template-rows 240ms ease}
[data-stack-surface] [data-stack-inner]{min-height:0;overflow:hidden}
[data-stack-surface] [data-stack-card][data-stack-open=true] [data-stack-reveal]{grid-template-rows:1fr}
[data-stack-surface] [data-stack-reveal][aria-hidden=true] [data-stack-full-link]{visibility:hidden}
@media(prefers-reduced-motion:reduce){[data-stack-surface] [data-stack-reveal]{transition:none}}