/* 关于我们 */
/* banner */
/* .child .banner {
  background-image: url('../images/banner_about.png');
} */
.child .banner-cn span:last-child {
  text-align: center;
}
.child .banner-cn span b:before {
  position: absolute;
  display: block;
  width: 100px;
  height: 100px;
}
.child .banner-cn span b:before { 
  position: absolute;
  display: inline-block;
  top: -3px;
  left: 33%;
  content: '';
  background: no-repeat url('../images/banner-icon.png');
  background-size: 25%;
}
/* 内容 */
.about-us-title {
  background: no-repeat url('../images/bg_about_bg11.png') center 330px;
}
.about-us-two {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  padding-bottom: 100px;
  width: 100%;
  background-color: #f9f5f2;
  color: #fff;
}
.about-us-list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  max-width: 1400px;
  width: 90%;
}
.about-us-list li {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  margin-right: 2px;
  margin-bottom: 2px;
  padding-top: 7%;
  padding-left: 6%;
  width: 49%;
  height: 270px;
  background-color: #434343;
  background-size: 88%;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}
.about-us-list li:nth-child(1) {
  background: url('../images/bg_about_bg201.png');
}
.about-us-list li:nth-child(2) {
  background: url('../images/bg_about_bg202.png');
}
.about-us-list li:nth-child(3) {
  background: url('../images/bg_about_bg203.png');
}
.about-us-list li:nth-child(4) {
  background: url('../images/bg_about_bg204.png');
}
.about-us-list li i {
  color: #eba267;
  font-size: 80px;
  transition:.6s
}
.about-us-list li:hover i{transform:translateY(-30px);transition:.6s}
.about-us-list li:hover div{transform:translateY(-30px);transition:.6s}
.about-us-list li div {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  margin-top: 20px;
  transition:.6s
}
.about-us-list li div strong {
  margin-left: 25px;
  font-size: 24px;
  margin-bottom: 30px;
}
.about-us-list li div span {
  margin-left: 25px;
  font-size: 16px;
}
.about-device {
  background-image: none;
}
.about-device-ls {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-start;
  max-width: 1400px;
  width: 100%;
}
.about-device-ls li {
  box-sizing: border-box;
  margin-bottom: 30px;
  margin-right: 37px;
  width: 31.5%;
  height: 300px;
  background-color: #f9f9f9;
  overflow: hidden;
}
.about-device-ls li:nth-child(3n) {
  margin-right: 0;
}
.about-device-ls li img {
  display: block;
  width: 100%;
  height: 100%;
}
.about-device .about-us-des {
  padding-bottom: 0;
}
.about-process {
  padding-bottom: 90px!important;
}
.about-device ul li,
.about-process ul li {
  position: relative;
  text-align: center;
  color: #333;
  font-size: 16px;
}
.about-device ul li img,
.about-process ul li img {
  transition: all .5s;
}
.about-device ul li:hover img,
.about-process ul li:hover img {
  transform: scale(1.2);
}
.about-process-ls li {
  height: 350px;
}
.about-process-img {
  position: relative;
  height: 300px;
  overflow: hidden;
}
.video-icon {
  position: absolute;
  left: 10px;
  top: -7px;
  box-sizing: border-box;
  width: 95%;
  height: 91%;
  background: no-repeat url('../images/about_video_icon.png') center;
  border: 1px solid #fff;
}
.about-process ul li span {
  display: block;
  margin-right: 37px;
  margin-top: 20px;
}
.video-modal {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  display: none;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,.5);
  z-index: 2;
}
.video-modal.show {
  display: flex;
}
.video-modal-inner {
  width: 750px;
  height: 450px;
  background-color: #fff;
}
.video-modal-inner .video-modal-title {
  display: flex;
  justify-content: space-between;
  box-sizing: border-box;
  padding: 0 20px;
  width: 100%;
  height: 45px;
  line-height: 45px;
  background-color: #000;
  color: #fff;
  font-size: 16px;
}
.video-modal-inner .video-modal-title span {
  font-size: 14px;
  cursor: pointer;
}
.video-modal-inner .video-modal-content {
  width: 100%;
  height: 405px;
}
.video-modal-inner .video-modal-content video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  -ms-object-fit: cover;
  outline: none;
}
@media all and (max-width: 1440px) {
  .about-us-list li {
    background-size: 100%;
  }
  .about-device-ls li {
    width: 30%;
    height: 260px;
  }
  .about-process ul li {
    height: 350px;
  }
  .about-process ul li .about-process-img {
    height: 230px;
  }
}
@media(max-width:990px){
  .about-us-list{display:flex;flex-direction: column;}
  .about-us-list li{width:100%;}
  .about-device-ls{display:flex;justify-content: space-between;}
  .about-device-ls li{height:auto;margin:0;width:48%;}
  .about-process ul li{height:auto}
  .about-process ul li .about-process-img{height:auto}
  .about-process ul li span{margin:0}
  .video-icon{width:80%;left:50%;top:50%;transform:translate(-50%,-50%)}
}