*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%;background:#0f1820;color:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;overflow:hidden;user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:transparent}#app{position:relative;width:100vw;height:100vh;overflow:hidden}#game{display:block;width:100%;height:100%;touch-action:none}#hud{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}#preset-bar{position:absolute;bottom:12px;left:50%;transform:translate(-50%);display:flex;gap:6px;flex-wrap:wrap;justify-content:center;padding:8px;background:#0009;border-radius:8px;pointer-events:auto;max-width:95vw}.preset-btn{font:inherit;font-size:13px;padding:6px 10px;background:#ffffff0d;color:#ddd;border:1px solid rgba(255,255,255,.15);border-radius:6px;cursor:pointer;transition:background .15s}.preset-btn:hover{background:#ffffff1f}.preset-btn.active{background:#2d5a8a;border-color:#4a90e2;color:#fff}#preset-desc{position:absolute;bottom:70px;left:50%;transform:translate(-50%);font-size:12px;color:#aaa;background:#00000080;padding:4px 10px;border-radius:4px;max-width:90vw;text-align:center}