body {
  margin: 0;
  padding: 0;
  font-family: 'Microsoft YaHei', sans-serif;
  overflow: hidden;
  touch-action: none;
}

#map {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.moving-image {
  position: absolute;
  width: 40px;
  height: 40px;
  background-size: contain;
  background-repeat: no-repeat;
  z-index: 1000;
  pointer-events: none;
  transition: left 0.3s, top 0.3s;
}

#runner {
  background-image: url('images/runner.png');
}

#chaser {
  background-image: url('images/chaser.png');
}

#controls {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1001;
  background: rgba(255, 255, 255, 0.9);
  padding: 10px 15px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  display: flex;
  gap: 10px;
}

button {
  padding: 8px 15px;
  border: none;
  border-radius: 4px;
  background: #4a6fa5;
  color: white;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  background: #3a5a8c;
}

button:active {
  transform: scale(0.98);
}

#pauseBtn {
  background: #e67e22;
}

#pauseBtn:hover {
  background: #d35400;
}