*{
  margin: 0;
  padding: 0;
}  
body{
  font-family: "Microsoft YaHei"; 
}      
.header{
  position: sticky;
  top: 0;
  height: .365rem;         
  background-color: rgb(215, 215, 215); 
  display: flex;
  justify-content: center;
  align-items: center;         
}
.wrap{
 width: 6.25rem; 
 display: flex;
 justify-content: space-between;
 align-items: center;         
}
.wrap>a{
  display: flex;
  width: .313rem;
  height: .313rem;
  justify-content: center;
  align-items: center;
}
.wrap>a>img{
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}        
.wrap ul{
  list-style: none;
  display: flex;
  gap: .313rem;
}
.wrap ul li{
  flex: 1;
  text-align: center;
}
.wrap ul li a{
  display: block;
  text-decoration: none;
  color: #333;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: .104rem;
}
.hamburger{
  display: none;
  background: none;
  border: none;
}
.hamburger .bar {
 display: block;
 width: .694rem;
 height: .083rem;
 margin: .139rem 0;
 background: black;
 transition: all 0.3s ease;
}
.service_support{
  height: 4.167rem;
  display: flex;
  justify-content: center;
  align-items: center;
}
.support_wrap{
  width: 6.25rem;
  height: 3.646rem;
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
  align-items: flex-start;
}
.driver_download h1{
  font-size: .208rem;
  line-height: .417rem;
}
.driver_download p{
  font-size: .104rem;
  line-height: .313rem;
}
.driver_download h3{
  font-size: .125rem;
  line-height: .313rem;
}
.driver_download ul li{
  font-size: .104rem;
  line-height: .208rem;
}
.driver_download h3:nth-of-type(2){
  padding-top: .208rem;
}

@media screen and (max-width: 768px){
  .header{
    position: relative;
    height: 1.944rem;
  }
  .wrap{
    justify-content: center;
  }
  .wrap>a{
    width: 1.389rem;
    height: 1.389rem;
  }
  .wrap ul{
    display: none;
  }
  .hamburger{
    display: block;
    position: absolute;
    top: .556rem;
    left: .556rem;
  }
   .hamburger.active .bar:nth-child(1) {
      transform: translateY(.222rem) rotate(45deg);
  }
   .hamburger.active .bar:nth-child(2) {
      opacity: 0;
  }
   .hamburger.active .bar:nth-child(3) {
      transform: translateY(-0.222rem) rotate(-45deg);
  }
  .wrap ul.active{
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 1.944rem;
    left: 0;
    background-color:  rgb(148, 171, 221);          
    gap: .278rem;
    padding: .278rem 0;          
  }
  .wrap ul.active li a{
    font-size: .556rem;
    width: 4.167rem;
  }
  .service_support{
    height: 15.278rem;
  }
  .support_wrap{
    width: 8.333rem;
    height: 13.889rem;
  }
  .driver_download h1{
    font-size: .556rem;
    line-height: .833rem;
  }
  .driver_download p{
    font-size: .444rem;
    line-height: .833rem;
  }
  .driver_download h3{
    font-size: .556rem;
    line-height: .833rem;
  }
  .driver_download ul li{
    font-size: .444rem;
    line-height: .694rem;
  } 
  .driver_download h3:nth-of-type(2){
    padding-top: .417rem;
  } 
  }