/* Standalone card page: one vertical flip card centered in the viewport. */
html { height:100%; }
body.card-page-body { min-height:100svh; margin:0; }
.card-page { min-height:100svh; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:34px; padding:40px 16px 52px; }
.card-page .flip-scene { width:min(330px,86vw); }
.card-page .stage-hint { color:var(--ink); }