html, body {
  margin: 0; padding: 0; height: 100%;
  background: #111;
  overflow: hidden;
  font-family: monospace;
  -webkit-user-select: none; user-select: none;
  touch-action: none;
}
#wrap {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
}
#game {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: #000;
  width: min(100vw, calc(100vh * 384 / 224));
  height: min(100vh, calc(100vw * 224 / 384));
}
#touch {
  position: absolute; inset: 0;
  pointer-events: none;
  display: none;
}
#touch.on { display: block; }
.tcluster { position: absolute; bottom: 18px; display: flex; gap: 14px; }
.tleft { left: 16px; }
.tright { right: 16px; }
.tbtn {
  pointer-events: auto;
  width: 58px; height: 58px;
  border-radius: 50%;
  background: rgba(255,255,255,0.14);
  border: 2px solid rgba(255,255,255,0.35);
  color: rgba(255,255,255,0.8);
  font-size: 20px; font-weight: bold;
  display: flex; align-items: center; justify-content: center;
  -webkit-tap-highlight-color: transparent;
}
.tbtn:active, .tbtn.down { background: rgba(255,255,255,0.35); }
.tsmall {
  position: absolute; top: 12px; right: 12px;
  width: 36px; height: 36px; font-size: 13px;
}