*{
  box-sizing: border-box;
}
body{
    font-size: 14px;
    margin: 0;
    padding: 0;
    width: 100vw;
    overflow: hidden auto;

  }
  a{
    text-decoration: none;
  }
  h1,h3,h2{
    text-align: center;
    margin: 0;
  }
  h1{
    font-size: 48px;
  }
  .nav{
    background: #F4F7FA;
    height: 52px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 6;
  }
  .nav .top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-width: 375px;
    width: 80vw;
    max-width: 866px;
    height: 100%;
    padding: 0 15px;
  }
  .top .left{
    display: flex;
    align-items: center;
    color: #666;
  }
  .top .right{
    font-size: 12px;
  }
  .top .right{
    display: flex;
    height: 100%;
  }
  .right span{
    display: flex;
    align-items: center;
    padding: 0 10px;
    cursor: pointer;
  }
  .right span:first-child{
    margin-right: 10px;
  }
  .right span.active{
    background: #E8EDF1;
  }
  .line{
    height: 2px;
    background: linear-gradient( 270deg, #8DFFBD 0%, #CDFF9F 100%);
    position: relative;
    z-index: 6;
  }
  .about{padding-top: 80px;}
  .contact{
    background: url(../images/bg.png) no-repeat center center;
    background-size: cover;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .about,.contact{
    height: calc(100vh - 104px);
    position: relative;
    width: 100vw;
    overflow: hidden auto;
    display: none;
  }

  
  .content{
    min-width: 375px;
    width: 80vw;
    max-width: 880px;
    margin: 0 auto;
    position: relative;
    z-index: 6;
  }
  .intds{
    text-align: center;
    width: 90%;
    margin: 20px auto 24px;
    color: rgba(0,0,0,0.6);

  }
  h3{
    margin-bottom: 36px;
    font-size: 20px;
  }
  .load{
    display: flex;
    justify-content: center;
  }
  .load a{
    width: 134px;
    height: 40px;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
    border-radius: 4px;
    color: #fff;
    cursor: pointer;
  }
  .load img{
    margin-right: 4px;
  }
  .load .android{
    background: #EAEAEA;
    color: #000;
    margin-left: 20px;
  }
  .footer{
    text-align: center;
    height: 50px;
    background: #fff;
    padding: 0 15px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .footer a{
    color: #3D3D3D;
  }
  .footer a:first-child{
    margin-right: 20px;
  }
  .big{
    width: 90vw;
    height: 90vw;
    border-radius: 50%;
    background: #F4F7FA;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -45%);
    min-width: 880px;
    min-height: 880px;
    max-width: 1630px;
    max-height: 1630px;
  }
  .yuan{
    position: absolute;
    bottom: -20%;
    width: 60vw;
    height: 60vw;
    max-width: 1630px;
    max-height: 1630px;
    left: 50%;
    transform: translate(-50%, 0);
  }
  .yuan>div{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transform-origin: 0% 0%;

  }
  .tong{
    width: 60vw;
    height: 60vw;
    border-radius: 50%;
    max-width: 1630px;
    max-height: 1630px;
    border: 1px solid #f4f7fa;
  }
  .tong2{
    width: 48vw;
    height: 48vw;
    border-radius: 50%;
    max-width: 916px;
    max-height: 916px;
    border: 1px solid #f4f7fa;
    animation: forbit 15s linear infinite;

  }
  .tong3{
    width: 36vw;
    height: 36vw;
    border-radius: 50%;
    max-width: 674px;
    max-height: 674px;
    background: rgba(255,255,255,0.3);
    box-shadow: 0px 4px 16px 0px rgba(0,0,0,0.06);
    
    animation: orbit 15s linear infinite;
  }
  .tong4{
    width: 24vw;
    height: 24vw;
    border-radius: 50%;
    max-width: 434px;
    max-height: 434px;
    background: rgba(255,255,255,0.3);
    box-shadow: 0px 4px 16px 0px rgba(0,0,0,0.06);
  }
  .tong5{
    width: 12vw;
    height: 12vw;
    border-radius: 50%;
    max-width: 206px;
    max-height: 206px;
    background: #126BFF;
  }
  .cyuan{
    width: 9vw;
    height: 9vw;
    border-radius: 50%;
    max-width: 164px;
    max-height: 164px;
    background: #FED736;
    position: absolute;
    top: 60%;
    left: 4%;
  }
  .gyuan{
    width: 14vw;
    height: 14vw;
    border-radius: 50%;
    max-width: 278px;
    max-height: 278px;
    background: #FED736;
    position: absolute;
    top: 40%;
    right: -3%;
  }
  .lyuan{
    width: 13vw;
    height: 13vw;
    border-radius: 50%;
    max-width: 236px;
    max-height: 236px;
    background: #00D985;
    position: absolute;
    bottom: -3%;
    left: 50%;
  }
  
  .qrbox{
    width: 100%;
    height: 55%;
    background: #fff;
    border-radius: 20px;
    display: flex;
    padding: 6%;
  }
  .qrbox>div{
    width: 50%;
    height: 100%;
  }
  .qrbox h2{
    text-align: left;
    font-size: 32px;
    line-height: 45px;
  }
  .qrbox .left{
    border-right: 1px solid #EAEAEA;
  }
  .qrbox .left img{
    width: 52%;
  }
  .qrbox .right{
    padding-left: 6%;
  }
  .about.active{
    display: block;
  }
  .contact.active{
    display: flex;
  }
  .hide{opacity: 0;}
  @keyframes orbit {
    from { transform: rotate(0deg) translate(-50%, -50%); }
    to { transform: rotate(360deg) translate(-50%, -50%); }
  }
  @keyframes forbit {
    from { transform: rotate(0deg) translate(-50%, -50%); }
    to { transform: rotate(-360deg) translate(-50%, -50%); }
  }
  /* 媒体查询，小于700像素时 */
  @media screen and (max-width: 700px) {
    .qrbox{
      flex-direction: column;
    }
    .qrbox h2{
      text-align: center;
    }
    .qrbox .left, .qrbox .right{
      width: 100%;
      height: 50%;
      text-align: center;
      border: none;
    }
    .qrbox h2{
      font-size: 24px;
    }
    .yuan{
      bottom: 0;
    }
    h1{
      font-size: 36px;
    }
    h3{
      font-size: 18px;
    }
  }
  @media screen and (min-width: 1020px) {
    .qrbox{
      height: 600px;
    }
  }
  @media screen and (min-width: 1300px) {
    .yuan{
      bottom: -30%;
    }
  }
  @media screen and (min-width: 1500px) {
    .yuan{
      bottom: -40%;
    }
  }
  @media screen and (min-width: 1920px) {
    .yuan{
      bottom: -50%;
    }
  }