* { margin: 0; padding: 0; box-sizing: border-box; }
html, body {
  height: 100%;
  background: #4a4a4a;
  overflow: hidden;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  overscroll-behavior: none;
}
#app {
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
#stage { position: relative; }
#game {
  display: block;
  touch-action: none;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
#mute {
  position: absolute;
  top: 8px;
  right: 8px;
  border: none;
  background: rgba(0,0,0,0.35);
  color: #fff;
  font-size: 18px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
}
.ad-slot { display: none; min-height: 50px; width: 320px; }
#privacy-link { color: #ccc; font-size: 12px; text-decoration: none; }