html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: #0b0b14;
  overflow: hidden;
  font-family: 'Press Start 2P', monospace;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}
#wrap {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
#game {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: #000;
  width: 320px;
  height: 240px;
}
#touch {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  display: flex;
  justify-content: space-between;
  padding: 12px;
  pointer-events: none;
}
#touch.hidden { display: none; }
.tgroup { display: flex; gap: 12px; pointer-events: auto; }
.tgroup button {
  width: 64px; height: 64px;
  font-family: inherit;
  font-size: 22px;
  color: #fff;
  background: rgba(40, 40, 70, 0.6);
  border: 3px solid #ccc;
  border-radius: 8px;
  touch-action: none;
}
.tgroup button:active { background: rgba(120, 120, 200, 0.8); }