.stack-briefing{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}.stack-art{padding:12px}.stack-rules ol{list-style:none;padding:0;margin:28px 0 32px}.stack-rules li{display:grid;grid-template-columns:32px 1fr;gap:16px;margin:20px 0}.stack-rules li b{font:13px monospace;color:var(--acid);padding-top:4px}.stack-rules p{font-size:16px;line-height:1.7;margin:0}.stack-rules .fine-print{margin-top:24px}html.stack-playing{position:fixed;top:var(--stack-scroll);left:0;width:100%;overflow:hidden}#stack-dialog{box-sizing:border-box;position:fixed;inset:0;width:min(1100px,100vw);height:100dvh;max-width:100vw;max-height:100dvh;margin:auto;padding:0;color:#f4f0e8;border:3px solid #13151a;background:#13151a;overflow:hidden;overscroll-behavior:contain}#stack-dialog::backdrop{background:#13151aee}#stack-dialog .stack-shell{height:100%;display:grid;grid-template-rows:auto minmax(0,1fr) auto;padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom)}.stack-hud{display:flex;align-items:center;gap:24px;padding:12px 20px;border-bottom:3px solid #13151a}.stack-wordmark{font:28px/.95 Impact,Arial Black,sans-serif;letter-spacing:-1px;white-space:nowrap}.stack-wordmark span{color:#dfff00}.stack-counter{display:flex;flex-direction:column;gap:2px;min-width:42px}.stack-counter>span{font:10px monospace}.stack-counter strong{font:700 22px/1.1 monospace;font-variant-numeric:tabular-nums}.stack-controls{margin-left:auto;display:flex;gap:8px}.stack-controls button{min-height:44px;padding:8px 12px;background:#24262e;border:2px solid #62656d;color:#f4f0e8;font:700 12px monospace;cursor:pointer}.stack-controls button:disabled{opacity:.5;cursor:default}.stack-play-area{position:relative;min-height:0;overflow:hidden;background:#f4f0e8}#stack-arena{width:100%;height:100%}#stack-arena canvas{width:100%;height:100%;display:block;touch-action:none;user-select:none;-webkit-user-select:none}#stack-arena canvas:focus-visible{outline:3px solid #a30070;outline-offset:-5px}.stack-meter{position:absolute;top:14px;left:50%;transform:translate(-50%);display:flex;flex-direction:column;align-items:center;gap:5px;pointer-events:none;color:#13151a;font:700 11px monospace}.stack-meter progress{width:136px;height:8px;border:1px solid #13151a;background:#f4f0e8;accent-color:#13151a;border-radius:0}.stack-meter progress::-webkit-progress-bar{background:#f4f0e8}.stack-meter progress::-webkit-progress-value{background:#13151a}.stack-meter progress::-moz-progress-bar{background:#13151a}#stack-overlay{position:absolute;inset:0;display:grid;place-items:center;padding:24px;background:#13151a44;overflow:auto}#stack-overlay[hidden]{display:none}.stack-overlay-card{max-width:460px;padding:32px;background:#13151a;color:#f4f0e8;border:3px solid #f4f0e8;box-shadow:8px 8px #dfff00}.stack-overlay-card h2{font-size:clamp(28px,5vw,48px);margin:18px 0}.stack-overlay-card>p:not(.tag){font-size:16px;line-height:1.6;margin:16px 0 24px}.stack-game-footer{display:flex;justify-content:space-between;gap:12px;padding:12px 20px;font:11px/1.5 monospace}.stack-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}#stack-dialog :is(button,a):focus-visible{outline:3px solid #dfff00;outline-offset:4px}@media (max-width:760px){.stack-briefing{grid-template-columns:1fr;gap:48px}.stack-art{max-width:440px;width:100%;justify-self:center}}@media (max-width:580px){.stack-hud{gap:12px;padding:10px;flex-wrap:wrap}.stack-wordmark{font-size:22px}.stack-counter{min-width:32px}.stack-counter strong{font-size:19px}.stack-best-counter{display:none}.stack-controls{gap:6px}.stack-controls button{padding:8px}.stack-game-footer{padding:10px;font-size:10px;flex-wrap:wrap}.stack-overlay-card{padding:24px}.stack-overlay-card .tag{font-size:10px}}@media (max-height:480px){.stack-hud,.stack-game-footer{padding:4px 12px}.stack-overlay-card{max-width:550px;padding:16px 24px}.stack-overlay-card h2{margin:10px 0;font-size:30px}.stack-overlay-card>p:not(.tag){margin:10px 0 14px;font-size:14px}.stack-overlay-card .button{min-height:44px;padding:10px 18px}}