html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background-color: black;
}

.page-wrapper {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.content {
  position: relative;
  width: 100%;
  height: 100%;
  max-width: 1080px;
  max-height: 1920px;
}

.bg-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.hotspot {
  position: absolute;
  bottom: 110px;  
  left: 60%;
  transform: translateX(-50%);
  width: 200px;   /* 热区宽度 */
  height: 90px;   /* 热区高度 */
  z-index: 20;
}