body {
  background-color: #000;
  margin: 0;
  overflow: hidden;
  background-repeat: no-repeat;
  position: relative;
}

.heart-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 24px;
  color: #fff;
  text-align: center;
  z-index: 100;
  font-family: 'Source Han Rounded', '思源柔黑体', 'Noto Sans CJK Rounded', sans-serif;
  font-weight: bold;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
  pointer-events: none;
  white-space: nowrap;
}

.bottom-text {
  position: absolute;
  bottom: 20px;
  width: 100%;
  font-size: 16px;
  color: #fff;
  text-align: center;
  z-index: 100;
  font-family: 'Source Han Rounded', '思源柔黑体', 'Noto Sans CJK Rounded', sans-serif;
  font-weight: bold;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
  white-space: nowrap;
}