body,h1,h2,h3,p{
 padding: 0;
 margin: 0;  
}

body{
  font-family: "Avenir", "PingFang SC","Microsoft Yahei";
}

a{
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

.header-wrap{
  width: 100%;
  height: 54px;
}
.header{
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 100%;
  height: 54px;
  background: #fff;
  display: flex;
}
.header > .logo{
  flex: 1;
  padding: 17px 24px;
}

.header >.nav{
  width: 20px;
  height: 20px;
  padding: 17px;
}

.header >.nav >.nav-button{
  display: block;
  width: 20px;
  height: 20px;
  position: relative;
  transition: all .3s;
}


.header > .nav-open >.nav-button{
  transform: rotate(45deg);
} 

.nav-button::before{
  position: absolute;
  display: block;
  content: "";
  left: 0;
  top: 9px;
  width: 20px;
  height: 2px;
  background: #000;
}

.nav-button::after{
  position: absolute;
  display: block;
  content: "";
  left: 9px;
  top: 0;
  width: 2px;
  height: 20px;
  background: #000;
}


.nav-menu{
  position: fixed;
  z-index: 100;
  top: -326px;
  width: 100%;
  height: 326px;
  background: #fff;
  transition: top .3s;
  padding-top: 20px;
  box-sizing: border-box;
}

.nav-menu-open{
  top: 54px;
}

.memu-item{
  padding-left: 120px;
}

.memu-item > a{
  color: #2E2E2E;
  text-decoration: none;
  line-height: 36px;
  font-size: 12px;
}

.memu-item > a.memu-active{
  padding-bottom: 4px;
  border-bottom: 1px solid #707070;
}

.submenu{
  border-left: 1px solid #707070;
  margin-left: 10px;
}
.submenu > .submenu-item{
  padding-left: 10px;
}

.submenu-item > a{
  color: #2D2D2D;
  font-size: 12px;
  line-height: 26px;
  text-decoration: none;
}

.submenu-item > a.memu-active{
  padding-bottom: 4px;
  border-bottom: 1px solid #707070;
}

.cl-button{
  display: inline-block;
  background: #0B7EA1;
  height: 30px;
  line-height: 30px;
  padding: 0 20px;
  color: #fff;
  text-decoration: none;
  font-size: 12px;
  border-radius: 5px;
}


.footer{
  padding: 10px 0 20px;
  background: #EAEAEA;
}
.footer > .platform{
  text-align: center;
}

.platform>.icon{
  display: inline-block;
}
.platform >.icon+.icon{
  margin-left: 18px;
}

.footer > .copyright a {
  display: block;
  text-align: center;
  font-size: 10px;
  color: #333;
  text-decoration: none;
  line-height: 20px;
}