.China-box{
  margin-top:46px;
}
.china-box-content{
  display:flex;
  justify-content:space-between;
  width:100%;
  margin-top:22px;
}
.china-box-content-right{
  height:100%;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  height: 653.38px;
}
.c2-video{
  height:382px;
  margin-top: 40px;
  width:410px;
}
@media (max-width:1400px){
  .China-box{
    margin-top:3.5vw;
  }
  .china-box-content{
    margin-top:1.5vw;
  }
  .china-box-content-right{
    height:49.3vw;
  }
  .c2-video{
    height:calc( 29vw * 382 / 410 );
    margin-top: 4vw;
    width:29vw;
  }
}
@media (max-width:1099px){
  .china-box-content-right{
    height:51vw;
  }
}
@media (max-width:900px){
  .china-box-content-right{
    height:52.5vw;
  }
  .China-box .da-box-list-4,.c2-video{
    margin-top:0;
  }
}
@media (max-width:767px){
  .China-box{
    margin-top:7.87vw;
  }
  .china-box-content{
    display:block;
  }
  .china-box-content-right{
    height:unset;
  }
  .China-box .da-box-list-4{
    margin-top:7.33vw;
  }
  .China-box .common-column-list-col-1.common-column-list-ur .common-column-list-unit{
    display:block;
    margin-top:6.53vw;
  }
  .China-box .common-column-list-col-1.common-column-list-ur .common-column-list-unit:first-of-type{
    margin-top:6.53vw;
  }
  .China-box .common-column-list-ur .common-column-list-unit{
    width:45.47vw;
  }
  .China-box .common-column-list-ur .common-column-list-unit-img{
    height:26vw;
    width:100%;
  }
  .China-box .common-column-list-ur .common-column-list-unit-title{
    -webkit-line-clamp: 3;
    height: 15.3vw;
  }
  .China-box .common-column-list.common-column-list-col-1.common-column-list-ur{
    margin-top:0;
  }
  .c2-video{
    height:calc( ( 100vw - 1.87vw - 1.87vw ) * 382 / 410 );
    margin-top:7.33vw;
    width:calc(100vw - 1.87vw - 1.87vw);
  }
}