.topbg{
  height: 756px;
  position: relative;
  overflow: hidden;
}
.topbg img{
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  min-width: 100%;
  min-height: 100%;
}
.toptxt {
  height: 240px;
  width: 100%;
  position: absolute;
  bottom: 0;
  left: 0;
  background: rgba(255, 255, 255, 0.9)
}
.toptxt .wrap{
  display: flex;
  height: 240px;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
.toptxt .title{
  position: relative;
  padding-bottom: 12px;
  margin-bottom: 30px;
  border-bottom: 2px solid rgba(34, 53, 121, 0.9);
  color: #5F6464;
  font-size: 30px;
}
.toptxt p{
  color: #5F6464;
  font-size: 14px;
  line-height: 32px;
  text-align: center;
}
/* content */
.content {
  text-align: center;
  position: relative;
}
.content .title h5{
  color: #5F6464;
  margin-top: 60px;
  font-size: 30px;
  text-align: center;
}
.content .title h5 span {
  display: inline-block;
  position: relative;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(34, 53, 121, 0.9);
  color: #5F6464;
}
#aboutus{
  position: absolute;
  top: -300px;
}
.content .title p {
  color: #5F6464;
  margin-top: 30px;
  font-size: 20px;
  text-align: center;
  color: #5F6464;
}
.content .txt{
  margin-top: 30px;
  color: #5F6464;
  font-size: 14px;
  line-height: 32px;
  text-align: center;
}
.content ul li p{
  padding: 0 20px;
  font-size: 16px;
}
.content ul li{
  padding-bottom: 50px;
}
.content ul li:nth-child(2n){
  background: #FBFBFB;
}
.imgstyle1{
  margin: 50px auto 0;
  text-align: center;
}
.imgstyle1 img{
  width: 722px;
}
.imgstyle2 {
  display: flex;
  justify-content: space-between;
  padding: 0 50px;
  margin-top: 80px;
}
.imgstyle2 div{
  width: 33%;
  text-align: center;
}
.imgstyle2 p{
  font-size: 18px;
  margin-top: 20px;
  color: rgba(236, 69, 38, 1);
}
.imgstyle2 div:first-child p {
  color: rgba(55, 128, 198, 1);
}
.imgstyle2 div:last-child p {
  color: rgba(4, 174, 80, 1);
}
.imgstyle3 {
  position: relative;
  margin-top: 75px;
}
.imgstyle3 img{
  width: 100%;
}
.imgstyle3 .txtbox{
  position: absolute;
  bottom: 0;
  height: 100%;
  width: 30%;
  background: rgba(0,0,0,0.4);
}
.imgstyle3 .txtbox h5{
  margin-top: 80px;
  font-size: 34px;
  text-align: center;
  color: #fff;
}
.imgstyle3 .txtbox p{
  margin-top: 50px;
  font-size: 16px;
  color: #fff;
  line-height: 30px;
  padding: 0 30px;
}
.txtbox_r {
  right: 0;
}
.txtbox_l {
  left: 0;
}
.imgstyle4 img{
  margin: 90px auto 30px;
  width: 887px;
}
.imgstyle5 {
  display: flex;
  justify-content: space-between;
  margin: 90px 0;
}
.imgstyle5 div{
  width: 28%;
}
.imgstyle5 div img{
  width: 100%;
}

.text {
  margin: 110px 0 50px;
  color: #5F6464;
}
.text h5{
  font-size: 30px;
}
.text p{
  margin-top: 30px;
  line-height: 32px;
}
/* w_top */
.wonder_con {
  margin-bottom: 120px;
}
.w_top{
  margin-top: 70px;
}
.w_tab {
  display: flex;
  justify-content: space-between;
}
.w_tab a {
  position: relative;
  width: 33%;
  display: block;
  text-align: center;
  font-size: 30px;
  color: #5F6464;
}
.w_tab a span{
  display: inline-block;
  padding-bottom: 12px;
  border-bottom: 2px solid transparent;
}
.w_tab .active span{
  border-bottom: 2px solid #223579;
}
.w_con {
  display: none;
  text-align: center;
}
.w_con.active{
  display: block;
}
.w_con img{
  width: 100%;
  margin: 50px 0;
}
.w_con h5{
  font-size: 24px;
  color: #5F6464;
  margin-bottom: 30px;
}
.w_con p{
  font-size: 16px;
  line-height: 32px;
  color: #5F6464;
  padding: 0 20px;
}
.w_img{
  display: flex;
  height: 360px;
  margin-bottom: 30px;
}
.w_img a{
  display: block;
  position: relative;
  overflow: hidden;
}
.w_img img {
  min-height: 100%;
  min-width: 100%;
  margin: 0;
}
.w_img a:first-child{
  margin-right: 20px;
}
.w_img span{
  display: block;
  height: 60px;
  position: absolute;
  left: 0;
  bottom: 0;
  display: block;
  width: 100%;
  background: rgba(0,0,0,0.4);
  color: #fff;
  font-size: 25px;
  height: 60px;
  line-height: 60px;
  text-align: right;
  letter-spacing: 12px;
}
.w_t{
  margin-top: 50px;
}
/* 适配 */
@media screen and (max-width: 1440px) {
  .toptxt .wrap{
    max-width: 1160px;
    padding: 0 20px;
  }
  .w_img {
    height: 354px;
  }
  .content li{
    padding: 0 20px 50px;
  }
}
@media screen and (max-width: 900px) {
  .mobile .content .title h5 span{
    font-size: 4.8rem;
  }
  .mobile .toptxt p,.mobile .content ul li p,.mobile .w_con p{
    font-size: 2.7rem;
  }
  .mobile .content .title{
    margin: 0;
  }
  .mobile .content .title h5{
    margin-top: 5rem;
  }
  .mobile .content .title p{
    margin-top: 5rem;
    font-size: 3.8rem;
  }
  .mobile .content .txt{
    font-size: 2.7rem;
    padding: 0 20px;
  }
  .mobile .imgstyle1 img,.mobile .imgstyle4 img{
    width: 100%;
  }
  .mobile .imgstyle1{
    margin: 5rem auto 0;
  }
  .mobile .imgstyle2{
    margin-top: 5rem;
    padding: 0 5rem;
  }
  .mobile .imgstyle2 p{
    font-size: 2.7rem;
    line-height: 3.8rem;
  }
  .mobile .imgstyle3{
    margin-top: 20px;
  }
  .imgstyle3 .txtbox h5{
    margin-top: 0;
    padding-top: 30px;
    font-size: 4.8rem;
  }
  .mobile .imgstyle3 img{
    margin-top: 20px;
  }
  .mobile .imgstyle3 .txtbox p{
    padding: 10px 20px 20px;
    margin: 0;
  }
  .mobile .imgstyle3 .txtbox{
    position: relative;
    height: auto;
    width: 100%;
  }
  .mobile .text{
    margin-top: 12rem;
  }
  .mobile .imgstyle5{
    margin: 5rem 0;
  }
  .mobile .imgstyle4 img{
    margin: 5rem 0;
  }
  .mobile .w_tab a span,.mobile .w_con h5{
    font-size: 4.8rem;
  }
  /* .mobile .w_con img{
    margin: 5rem 0;
  } */
  .mobile .wonder_con{
    margin-bottom: 12rem;
  }
  .mobile .w_img{
    display: block;
    height: auto;
    width: 100%;
    margin: 0;
  }
  .mobile .w_img a{
    margin: 5rem 20px!important;
  }
  .mobile .w_img span{
    font-size: 4.2rem;
  }
}