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

header {
  padding: 40px 40px;
  font-size: 0;
  overflow: hidden;
}

.logo {
  margin-right: 12px;
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.title {
  display: inline-block;
  color: #000;
  font-family: PingFang SC;
  font-style: normal;
  font-weight: 600;
  vertical-align: bottom;
  font-size: 16px;
  height: 32px;
  line-height: 32px;
}

.button {
  text-align: center;
}

.button .img {
  display: inline-block;
  cursor: pointer;
}

.button .img img {
  width: 100%;
  height: 100%;
}

.round {
  position: absolute;
}

.mm-name,
.pc-name {
  position: relative;
}

footer {
  padding: 0.5em 0 3em;
  text-align: center;
}

footer span {
  color: #999;
  padding: 0 0.5em;
}

footer a {
  color: #999;
}

@media only screen and (min-width: 961px) {
  body {
    background: url(../assets/bg.png) center center no-repeat;
    background-size: cover;
  }

  .content {
    padding-bottom: 68px;
    margin: 0 auto;
    background-clip: padding-box;
    display: flex;
    outline: 0;
    pointer-events: auto;
    position: relative;
    border-radius: 12px;
    flex-shrink: 0;
    width: 903px;
    flex-shrink: 0;
  }

  .mm-name {
    display: none;
  }

  .pc-name {
    color: #000;
    font-family: PingFang SC;
    font-size: 48px;
    font-style: normal;
    font-weight: 600;
    line-height: 60px;
    padding-bottom: 255.48px;
  }

  .video {
    width: 320px;
    flex-shrink: 0;
    overflow: hidden;
    border-radius: 34px;
    border: 16px solid #000;
    background-color: #000;
  }

  video {
    border-radius: 34px;
    margin-top: -1px;
    overflow: hidden;
    object-fit: cover;
    backface-visibility: hidden;
    transform: translate3d(0, 0, 0);
  }

  .button {
    text-align: left;
  }

  .button .img {
    width: 234.617px;
    height: 65.926px;
    flex-shrink: 0;
    cursor: pointer;
    border-radius: 12px;
    overflow: hidden;
  }

  .button .img:first-child {
    margin-right: 10px;
  }

  .pc-right {
    padding-left: 67px;
    padding-top: 100px;
  }
}

@media only screen and (max-width: 960px) {
  body {
    background: url(../assets/bg.mm.png) no-repeat;
    background-size: 10rem 16.133333rem;
  }

  header {
    padding: 0.4rem 0.4rem 0.24rem;
    height: 0.853333rem;
  }

  .logo {
    margin-right: 0.16rem;
    width: 0.853333rem;
    height: 0.853333rem;
    border-radius: 0.08rem;
  }

  .title {
    font-size: 0.426667rem;
    height: 0.853333rem;
    line-height: 0.853333rem;
  }

  .pc-right {
    padding-bottom: 0;
  }

  .pc-name {
    display: none;
  }

  .mm-name {
    color: #000;
    font-family: PingFang SC;
    font-style: normal;
    font-weight: 600;
    text-align: left;
    font-size: 0.64rem;
    line-height: 0.746667rem;
    padding-left: 2.2rem;
  }

  .video {
    margin: 0.4rem auto 0.48rem;
    width: 4.68rem;
    height: 10.12rem;
    border-radius: 0.44rem;
    overflow: hidden;
    border: 0.213333rem solid #000;
    border-bottom-width: 0.162rem;
    background-color: #000;
  }

  video {
    border-radius: 0.313333rem;
    overflow: hidden;
    object-fit: cover;
    backface-visibility: hidden;
    transform: translate3d(0, 0, 0);
  }

  .button {
    padding-bottom: 1rem;
  }

  .button .img {
    margin: 0 0.1rem;
    width: 3.611947rem;
    height: 1.01492rem;
    border-radius: 0.18rem;
    overflow: hidden;
  }

  .round {
    position: absolute;
    display: block;
    width: 1.173333rem;
    height: 3.946667rem;
    top: 1.366667rem;
    left: 0.96rem;
    background: url(./round.mm.png) no-repeat;
    background-size: 100% 100%;
    transform: rotate(-2deg);
  }
}