.header,
.header-phone{
  background-color: #101012;
}
.banner{
  height: 400px;
  margin: 120px 0 0 0;
  background-image: url(../imgs/img-erjibanner.png);
}
.main{
  padding: 90px 0 150px 0;
  background-color: #1d1e23;
}
.main .about{
  background-image: url(../imgs/biaotisekuai02.png);
  background-position: top center;
  background-size: auto 109px;
  background-repeat: no-repeat;
  max-width: 1200px;
  margin: 0 auto;
}
.main .about h1{
  font-size: 28px;
  color: #fff;
  text-align: center;
  margin: 0;
  padding: 20px 0 0 0;
}
.main .about p{
  font-size: 24px;
  color: #fff;
  text-align: center;
  margin: 0;
  padding: 100px 140px 0 140px;
  line-height: 48px;
}
.main .about .address{
  text-align: center;
  font-size: 30px;
  color: #ffd981;
  padding: 50px 0 90px 0;
  border-bottom: 2px solid #d5b36b;
  max-width: 1200px;
  margin: 0 auto;
}
.main .about .address::before{
  content: "公司地址：";
}
.main .content{
  max-width: 1200px;
  margin: 0 auto;
}
.main .content .title{
  text-align: center;
  font-size: 38px;
  color: #d5b36b;
  padding: 68px 0 44px 0;
}

.main .content .items ul{
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}
.main .content .items ul li{
  flex-grow: 1;
  text-align: center;
  width: 200px;
}
.main .content .items ul li .icon{
  width: 200px;
  height: 200px;
  display: inline-block;
  border-radius: 50%;
  background-color: #1d1e23;
  background-position: center;
  background-repeat: no-repeat;
  background-size: 90px 90px;
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.3);
}
.main .content .items ul li.product .icon{
  background-image: url(../imgs/icon-01.png);
}
.main .content .items ul li.team .icon{
  background-image: url(../imgs/icon-02.png);
}
.main .content .items ul li.service .icon{
  background-image: url(../imgs/icon-03.png);
}
.main .content .items ul li.reliable .icon{
  background-image: url(../imgs/icon-04.png);
}
.main .content .items ul li .title-small{
  font-size: 26px;
  color: #d5b36b;
  padding: 40px 0 10px 0;
}
.main .content .items ul li p{
  font-size: 16px;
  color: rgba(255, 255, 255, 0.3);
  margin: 0;
  line-height: 36px;
  padding: 0 10px;
}

@media(max-width: 1200px){
  .main{
    padding-left: 10px;
    padding-right: 10px;
  }
}
@media(max-width: 940px){
  .banner{
    margin-top: 90px;
  }
  .main .content .items ul li{
    width: 160px;
  }
  .main .content .items ul li .icon{
    width: 160px;
    height: 160px;
  }
}
@media(max-width: 760px){
  .main .about p{
    padding-left: 20px;
    padding-right: 20px;
  }
}
@media(max-width: 680px){
  .main .content .items ul li{
    width: 220px;
  }
}