@font-face {
  font-family: "PP Mondwest";
  src: url("fonts/PPMondwest-Regular.otf") format("opentype");
}

html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
}

canvas {
  display: block;
  overflow: hidden;
}

#overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6); /* 半透明黑色遮罩 */
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

#startButton {
  font-family: "PP Mondwest", sans-serif;
  font-size: 300px;
  padding: 20px 40px;
  border: none;
  background-color: #ffffff00;
  color: #ffffff;
  border-radius: 5px;
  cursor: pointer;
  margin-bottom: 20px;
}

#overlay p {
  font-family: "PP Mondwest", sans-serif;
  font-size: 50px;
  color: #fff;
}