body {
  background: #F2F2F2;
}

.about .about-nav {
  width: 1100px;
  margin: 0 auto;
  background: #FFFFFF;
  margin-top: 16px;
  margin-bottom: 50px;
}

.about .about-nav .zuo {
  float: left;
  width: 250px;
  margin-left: 20px;
  padding-top: 27px;
}

.about .about-nav .zuo .net ul h1 {
  width: 250px;
  height: 36px;
  line-height: 36px;
  margin-bottom: 6px;
  border: 1px solid #979797;
  border-radius: 14px;
  box-sizing: border-box;
  background: #67696C;
  color: #fff;
  text-indent: 2em;
  font-family: PingFangSC-Regular;
  font-size: 16px;
}

.about .about-nav .zuo .net ul li {
  width: 250px;
  margin-bottom: 6px;
}

.about .about-nav .zuo .net ul li .li-top {
  width: 250px;
  margin-bottom: 6px;
  border: 1px solid #979797;
  border-radius: 14px;
  box-sizing: border-box;
  background: #FFFFFF;
  position: relative;
}

.about .about-nav .zuo .net ul li .li-top a {
  display: block;
  border-radius: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.about .about-nav .zuo .net ul li .li-top a span {
  display: block;
  height: 34px;
  width: 70%;
  line-height: 34px;
  margin-left: 34px;
  font-family: PingFangSC-Regular;
  font-size: 16px;
  color: #7C7C7C;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;

}

.about .about-nav .zuo .net ul li .li-top a.active {
  background: #F3F3F3;
}

.about .about-nav .zuo .net ul li .li-top .t {
  width: 14px;
  height: 14px;
  position: absolute;
  top: 0;
  right: 13px;
}

.about .about-nav .zuo .net ul li .li-top .t i {
  display: block;
  width: 14px;
  height: 14px;
  margin-top: 10px;
  line-height: 11px;
  text-align: center;
  background: url(../images/jiagd.png) no-repeat 0 center;
}

.about .about-nav .zuo .net ul li .li-top .t.hover i {
  background: url(../images/jianzk.png) no-repeat 0 center;
}

.about .about-nav .zuo .net ul li .li-top:hover {
  background: #F3F3F3;
}

.about .about-nav .zuo .net ul li .txt {
  display: none;
  width: 83%;
  margin-left: 18%;
}

.about .about-nav .zuo .net ul li .txt .txt-nav {
  margin-top: 6px;
  border: 1px solid #979797;
  border-radius: 14px;
  box-sizing: border-box;
  background: #F3F3F3;
}

.about .about-nav .zuo .net ul li .txt .txt-nav a {
  display: block;
  text-indent: 2em;
  line-height: 36px;
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #7C7C7C;
}

.about .about-nav .zuo .meb {
  margin-top: 34px;
}

.about .about-nav .zuo .meb h1 {
  width: 250px;
  height: 36px;
  border: 1px solid #979797;
  border-radius: 14px;
  box-sizing: border-box;
  margin-bottom: 6px;
  line-height: 34px;
  font-family: PingFangSC-Regular;
  font-size: 16px;
  color: #fff;
  text-indent: 2em;
  background: #67696C;
}

.about .about-nav .zuo .meb .meb-nav {
  width: 250px;
  background: #FFFFFF;
  border: 1px solid #B7B7B7;
  border-radius: 14px;
  box-sizing: border-box;
  padding-bottom: 16px;
}

.about .about-nav .zuo .meb .meb-nav .nav-one {
  width: 179px;
  margin: 0 auto;
  margin-top: 14px;
}

.about .about-nav .zuo .meb .meb-nav .nav-one p {
  margin-bottom: 22px;
  line-height: 22px;
  font-family: PingFangSC-Regular;
  font-size: 16px;
  color: #464646;
  letter-spacing: 0;
}

.about .about-nav .zuo .meb .meb-nav .nav-one p:nth-child(3) {
  margin-bottom: 0;
}

.about .about-nav .zuo .meb .meb-nav .nav-two {
  margin-top: 14px;
}

.about .about-nav .zuo .meb .meb-nav .nav-two .conimg {
  float: left;
  width: 30px;
  height: 30px;
  line-height: 27px;
  text-align: center;
  margin-left: 30px;
}

.about .about-nav .zuo .meb .meb-nav .nav-two .conimg img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  vertical-align: middle;
}

.about .about-nav .zuo .meb .meb-nav .nav-two span {
  float: left;
  margin-left: 12px;
  margin-top: 4px;
  line-height: 22px;
  font-family: PingFangSC-Regular;
  font-size: 16px;
  color: #464646;
  letter-spacing: 0;
}

.about .about-nav .you {
  float: left;
  width: 72%;
  margin-top: 25px;
  margin-left: 34px;
}

.about .about-nav .you .list span {
  line-height: 17px;
  font-family: PingFangSC-Regular;
  font-size: 12px;
  color: #272727;
  letter-spacing: 0;
}

.about .about-nav .you .list span:last-child {
  color: #2D85AE;
}

.about .about-nav .you .key {
  width: 100%;
  height: 1px;
  background: #E4E4E4;
  margin-top: 12px;
  margin-bottom: 20px;
}

.about .about-nav .you .cont ul li {
  float: left;
  margin-right: 13px;
  margin-bottom: 14px;
  width: 250px;
  background: #FFFFFF;
  border: 1px solid #3D3D3D;
  box-sizing: border-box;
}

.about .about-nav .you .cont ul li a {
  display: block;
}

.about .about-nav .you .cont ul li a .aboutli-img {
  width: 210px;
  height: 170px;
  line-height: 167px;
  text-align: center;
  margin: 0 auto;
  margin-top: 20px;
}

.about .about-nav .you .cont ul li a .aboutli-img img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  vertical-align: middle;
}

.about .about-nav .you .cont ul li a .ping {
  margin-top: 26px;
  padding-bottom: 14px;
  width: 210px;
  height: 40px;
  margin: 0 auto;
}

.about .about-nav .you .cont ul li a .ping p {
  max-height: 40px;
  line-height: 20px;
  text-align: center;
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #515151;
  letter-spacing: 0;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

.about .about-nav .you .cont ul li:hover {
  background: #D8D8D8;
  border: 1px solid #3D3D3D;
}

.about .about-nav .you .fenye {
  margin-top: 30px;
  margin-bottom: 30px;
}