@media only screen and (min-width: 275px) {
  .bg-app {
    width: 100%;
  }
}
@media only screen and (min-width: 750px) {
  .bg-app {
    min-width: 750px;
    width: 100%;
  }
}

/* .main-img{
  width: 100%;
  height: auto;
} */

.down-button-img{
  margin: auto;
  display: block;
  width: 50%;
  height: 3.5rem;
  object-fit: contain;
}

.float-download-btn{
  position: sticky;
  bottom: 0px;
  width: 100%;
  height: 15rem;
  cursor: pointer;
  z-index: 1000;
}
.contact-service {
  /* position: fixed; */
  right: 10px;
  top: 0px;
  width: 80px;
}
.float-bar-container {
  width: 100%;
  position: fixed;
  bottom: 1.5rem;
  /* height: 3rem; */
  display: flex;
  flex-direction: row;
  justify-content: center;
  flex-wrap: wrap;
}
body {
  margin: 0;
  width: 100%;
  height: 100%;
  /* display: flex; */
  /* justify-content: center; */
  /* align-items: center; */
  background-color: black;
}

 .mask {
      position: fixed;
      inset: 0;
      background: rgba(0, 0, 0, 0.6);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 999;
    }

    /* 弹窗 */
    .modal {
      width: 90%;
      max-width: 600px;
      max-height: 80vh;
      background: #fff;
      border-radius: 8px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
    }

    /* 头部 */
    .modal-header {
      padding: 10px;
      border-bottom: 1px solid #eee;
      display: flex;
      justify-content: end;
      align-items: center;
    }

    .close-btn {
      cursor: pointer;
      font-size: 18px;
    }

    /* 内容区（可滚动） */
    .modal-body {
      flex: 1;
      overflow-y: auto;
      padding: 10px;
    }

    .modal-body img {
      width: 100%;
      height: auto;
      display: block;
    }