main[data-game="pixel-stack"] .game-surface{background:radial-gradient(ellipse at top,#322045,#100b18);padding:18px;min-height:0}.stack-layout{display:grid;grid-template-columns:minmax(0,300px) 110px;gap:20px;align-items:start;justify-content:center;width:100%}#stack-board{border:2px solid #8d70b0;border-radius:8px;box-shadow:0 0 32px #b39aff18;width:100%;height:auto;touch-action:none}.stack-rail h2{font-size:12px;letter-spacing:2px;color:#d4c0fa;margin:10px 0}.stack-rail p{font-size:11px;line-height:1.7;color:#ada0bd}.stack-rail canvas{width:100%;height:auto}.stack-controls{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:12px}.stack-controls button{touch-action:none;user-select:none;min-height:48px;font-weight:bold}.stack-drop{grid-column:1/-1}.stack-controls button:active{background:#e1d3ff;color:#221333}@media(max-width:480px){main[data-game="pixel-stack"] .game-surface{padding:8px}.stack-layout{grid-template-columns:minmax(0,1fr) 74px;gap:10px}.stack-rail p{font-size:10px}.stack-controls button{padding:8px}}