* {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
    outline: none;
  }
  a,li,ul {
    list-style: none;
    text-decoration: none;
  }

  html {
    font-size: 50px;
  }

  body {
    font-size: 14px;
    min-width: 320px;
    max-width: 750px;
    margin: auto;
    position: relative;
  }
  .data-value {
    display: none;
    opacity: 0;
  }
  .card-show {
    height: var(--height, 100vh);
  }
  .mask-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    z-index: 1;
  }
  .card-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 0.36rem 0.36rem 7vh;
    z-index: 10;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }
  .player-container {
    width: 100%;
    height: 100%;
    font-size: 0;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
  }
  .card-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
  }
  .card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .card-logo-left {
    min-width: 2.56rem;
    min-height: 1rem;
    background-image: url("https://os.j.cctv.cn/common/channel/qiye/lingshi/img/logo.png");
    background-repeat: no-repeat;
    background-size: 100% auto;
  }
  .card-logo-right {
    min-width: 2rem;
    min-height: 1rem;
    background-image: url("https://os.j.cctv.cn/common/channel/qiye/lingshi/img/home_df.png");
    background-repeat: no-repeat;
    background-size: 2rem auto;
  }
  .card-textImg {
    text-align: center;
  }
  .card-textImg img {
    height: 32vh;
  }
  .card-btn {
    text-align: center;
  }
  .btn1-step,
  .btn2-step {
    position: relative;
    display: inline-block;
    padding: 0 0.68rem 0;
    height: 0.88rem;
    line-height: 0.88rem;
    color: #fff;
    font-size: 0.32rem;
    border: 1px solid #fff;
    border-radius: 0.44rem;
    cursor: pointer;
  }
  .btn1-step:hover,
  .btn2-step:hover {
    opacity: 0.8;
  }
  .btn2-step {
    display: none;
  }
  .btn-placeholder {
    float: right;
    width: 0.5rem;
    height: 100%;
  }
  .btn-arrow {
    position: absolute;
    right: 0.78rem;
    top: 0;
    width: 0.4rem;
    height: 100%;
    background-image: url("https://os.j.cctv.cn/common/channel/qiye/lingshi/img/arrow.png");
    background-repeat: no-repeat;
    background-position: right center;
    background-size: 100% auto;
    transform: translateX(0.2rem);
    will-change: transform;
    animation: smallbounce 0.8s ease-in-out infinite alternate;
  }
  @keyframes smallbounce {
    0% {
      transform: translateX(0.2rem);
    }

    100% {
      transform: translateX(0.4rem);
    }
  }