*{
  margin:0;
  padding:0;
  box-sizing:border-box;/*�����ܿ�=margin+width*/
}
ul,li{
  list-style:none;
  padding: 0;
  margin: 0;
}
body{
  font-family: "PingFang SC","Microsoft YaHei","Helvetica Neue",Helvetica,"Hiragino Sans GB",Arial,SimSun,sans-serif;
  background-size: cover;
  height: 100%;
  background: url(/img/index.jpg) center center no-repeat fixed;
}
.header,.main,.footer{
  width: 100%;
  margin: 0 auto;
  text-align: center;
}
.header-nav{
  position: absolute;
  top: 9%;
  font-size: 0;
  left: 0;
  right: 0;
}
.header-nav span{
  font-size: 36px;
  color: #fff;
  letter-spacing: 7px;
  vertical-align: middle;
  font-weight: 300;
}
.header-nav span.dot{
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #fcfcfc;
  border-radius: 50%;
  margin: 0 19px;
  margin-left: 13px;
}
.header-main{
  width: 100%;
  position: absolute;
  top: 35%;
}
.header-main img{
  width: 128px;
}
.main{
  position: absolute;
  top: 60%;
  left: 0;
}
.main .logo li,.main .content li{
  width: 6%;
  display: inline-block;
  margin: 0 2.5%;
}
.main .logo li a{
  display: inline-block;
  width: 100%;
  padding: 5px;
  transform:scale(1);
  transition: transform 1s ease;
  border: 1px solid transparent;
}
.main .logo li:hover a{
  border: 1px solid #E7511A;
  border-color: rgba(231, 81, 26, 0.5);
  background: rgba(0,0,0,0.5);
  border-radius: 50%;
  transform:scale(1.3);
  transition: transform 1s ease;
}
.main .logo li a img{
  width: 100%;
}
.main .content{
  margin-top: 3%;
}
.main .content li a{
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
}
.footer{
  color: rgba(255, 255, 255, 0.6);
  position: absolute;
  bottom: 2.5%;
  left: 0;
  font-size: 12px;
}
.model{
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.9);
  display: none;
}
.andios-box,.weixin-box{
  width: 200px;
  margin:0 auto;
  margin-top: 150px;
  display: none;
}
.andios-box img,.weixin-box img{
  width: 100%;
}
.model p{
  color: #fff;
  text-align: center;
  margin-top: 10px;
}
@media (min-width: 768px) and (max-width: 992px) {
  .header-nav span{
    font-size: 20px;
  }
  .main .content li a{
    font-size: 14px;
  }
}
@media (min-width: 992px) and (max-width: 1200px){
  .header-nav span{
    font-size: 28px;
  }
  .main .content li a{
    font-size: 14px;
  }
}
@media (min-width: 1200px){
  .main .content li a{
    font-size: 16px;
  }
}