.home-head{
  position: fixed;
  top: 0;
  left: 0;
  z-index: 99;
  width: 100%;
  color: #fff;
  padding: 20px;
  padding-right: 55px;
}
.home-head.on{
  background: rgba(0,0,0,0.7);
}
.home-head .logo{
  float: left;
}
.home-head .menu-btn{
  float: right;
  cursor: pointer;
}
.home-head .menu-btn i{
  display: inline-block;
  line-height: 24px;
  padding-right: 10px;
}

.menu{
  position: fixed;
  top: 0;
  left: 100%;
  z-index: 199;
  width: 100%;
  height: 100%;
  background: #171431;
  color: #fff;
  -webkit-transition: 0.6s left cubic-bezier(.66,.3,.1,.92);
  -moz-transition: 0.6s left cubic-bezier(.66,.3,.1,.92);
  -ms-transition: 0.6s left cubic-bezier(.66,.3,.1,.92);
  -o-transition: 0.6s left cubic-bezier(.66,.3,.1,.92);
  transition: 0.6s left cubic-bezier(.66,.3,.1,.92);
}
.menu.offset100{
  left: 0;
}
.menu > div{
  float: left;
  height: 100%;
}
.menu-case{
  width: 30%;
}
.menu-contain{
  width: 63%;
}
.menu-close{
  width: 7%;
}
.menu-case-wrap{
  height: 20%;
}
.menu-case1{
  background: url(../image/service_img_01.jpg) center no-repeat;
  background-size: cover;
}
.menu-case2{
  background: url(../image/service_img_02.jpg) center no-repeat;
  background-size: cover;
}
.menu-case3{
  background: url(../image/service_img_03.jpg) center no-repeat;
  background-size: cover;
}
.menu-case4{
  background: url(../image/service_img_04.jpg) center no-repeat;
  background-size: cover;
}
.menu-case5{
  background: url(../image/service_img_05.jpg) center no-repeat;
  background-size: cover;
}
.menu-contain{
  padding: 8% 0 0 12%;
}
.menu-contain li a{
  display: block;
  width: 250px;
  height: 60px;
  line-height: 60px;
  font-size: 20px;
  color: #fff;
  position: relative;
}
.menu-contain li a:before{
  content: '';
  display: block;
  width: 0;
  height: 8px;
  background: #fff;
  position: absolute;
  top: 50%;
  left: -75px;
  margin-top: -4px;
  -webkit-transition: 0.3s width cubic-bezier(.66,.3,.1,.92);
  -moz-transition: 0.3s width cubic-bezier(.66,.3,.1,.92);
  -ms-transition: 0.3s width cubic-bezier(.66,.3,.1,.92);
  -o-transition: 0.3s width cubic-bezier(.66,.3,.1,.92);
  transition: 0.3s width cubic-bezier(.66,.3,.1,.92);
}
.menu-contain li a:hover:before{
  width: 60px;
}
.menu-contain li a i{
  font-size: 16px;
}
.menu-close{
  border-left: 1px solid #2d2753;
}
.close-wrap{
  width: 24px;
  cursor: pointer;
  margin: 40px auto auto;
}
.close-icon{
  width: 24px;
  height: 24px;
  margin: 0 auto auto;
  background: url(../image/close.png) center no-repeat;
}
.close-title{
  width: 14px;
  margin: 20px auto auto;
  text-align: center;
}