.memory-board{position:absolute;inset:58px 16px 16px;display:grid;grid-template-columns:repeat(4,1fr);gap:10px;align-content:center;max-width:560px;margin:auto}.memory-card{aspect-ratio:1;border:1px solid #253043;border-radius:14px;background:#101722;color:transparent;font-size:34px;font-weight:900;cursor:pointer;transition:.2s;transform:translateZ(0)}.memory-card span{opacity:0;transition:.15s}.memory-card.open,.memory-card.done{background:#8bff36;color:#071007;transform:rotateY(180deg)}.memory-card.open span,.memory-card.done span{opacity:1;display:inline-block;transform:rotateY(180deg)}.memory-card.done{opacity:.55}@media(max-width:620px){.memory-board{grid-template-columns:repeat(3,1fr);gap:8px;inset:58px 10px 10px}.memory-card{border-radius:11px;font-size:28px}}
.external-stage{background:#020407;overflow:hidden}
.external-game{position:absolute;inset:0;width:100%;height:100%;border:0;background:#020407;display:block}
.external-stage .game-hud[hidden]{display:none!important}
@media(max-width:620px){.external-stage{aspect-ratio:9/14}}