.about .about-nav {
  width: 1100px;
  margin: 0 auto;
  margin-top: 20px;
}

.about .about-nav .zuo {
  float: left;
  width: 250px;
}

.about .about-nav .zuo .zuo-nav {
  margin-bottom: 24px;
}

.about .about-nav .zuo .zuo-nav h1 {
  width: 100%;
  height: 44px;
  background: #656565;
  border-top: 10px solid #7F050F;
}

.about .about-nav .zuo .zuo-nav h1 span {
  display: block;
  height: 22px;
  margin-top: 11px;
  margin-left: 10px;
  font-family: PingFangSC-Medium;
  font-size: 16px;
  color: #FFFFFF;
  letter-spacing: 0;
}

.about .about-nav .zuo .zuo-nav .zuo-to {
  background: #DDDFE0;
  padding-top: 20px;
  padding-bottom: 20px;
}

.about .about-nav .zuo .zuo-nav .zuo-to ul li .li-top a {
  display: block;
  margin-left: 15px;
  margin-bottom: 6px;
  width: 220px;
  height: 40px;
  background-image: linear-gradient(-180deg, #ffffff 0%, #fafafa 50%, #dbd9da 100%);
  border: 1px solid #C0BABB;
  box-sizing: border-box;
}

.about .about-nav .zuo .zuo-nav .zuo-to ul li .li-top a span {
  width: 85%;
  display: block;
  margin-top: 8px;
  margin-left: 16px;
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #5E5E5E;
  letter-spacing: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;

}

.about .about-nav .zuo .zuo-nav .zuo-to ul li .li-top a.active {
  background: #7F050F;
  border: 1px solid #C0BABB;
  box-sizing: border-box;
}

.about .about-nav .zuo .zuo-nav .zuo-to ul li .li-top a.active span {
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #FFFFFF;
  letter-spacing: 0;
}

.about .about-nav .zuo .zuo-nav .zuo-to ul li .li-top a:hover {
  background: #7F050F;
  border: 1px solid #C0BABB;
  box-sizing: border-box;
}

.about .about-nav .zuo .zuo-nav .zuo-to ul li .li-top a:hover span {
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #FFFFFF;
  letter-spacing: 0;
}

.about .about-nav .zuo .zuo-nav .zuo-to ul li .txt {
  display: none;
}

.about .about-nav .zuo .zuo-nav .zuo-to ul li .txt .txt-nav a {
  display: block;
  margin-left: 55px;
  margin-bottom: 6px;
  width: 180px;
  height: 40px;
  background: #A3A3A3;
  border: 1px solid #C0BABB;
  box-sizing: border-box;
}

.about .about-nav .zuo .zuo-nav .zuo-to ul li .txt .txt-nav a span {
  display: block;
  margin-top: 8px;
  margin-left: 16px;
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #FFFFFF;
  letter-spacing: 0;
}

.about .about-nav .zuo .zuo-nav .zuo-to ul li .txt .txt-nav a:hover {
  background: #7F050F;
  border: 1px solid #C0BABB;
  box-sizing: border-box;
}

.about .about-nav .zuo .zuo-nav .zuo-to ul li .txt .txt-nav a:hover span {
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #FFFFFF;
  letter-spacing: 0;
}

.about .about-nav .zuo .zuo-nav .zuo-to p {
  display: block;
  margin-left: 30px;
  margin-right: 30px;
  line-height: 22px;
  margin-bottom: 10px;
  font-family: PingFangSC-Regular;
  font-size: 16px;
  color: #464646;
  letter-spacing: 0;
}

.about .about-nav .zuo .zuo-nav .zuo-to p span {
  font-family: PingFangSC-Regular;
  font-size: 16px;
  color: #464646;
  letter-spacing: 0;
}

.about .about-nav .you {
  float: left;
  width: 826px;
  margin-left: 24px;
}

.about .about-nav .you .conxt {
  margin-top: 20px;
}

.about .about-nav .you .conxt ul li {
  float: left;
  margin-left: 15px;
  margin-bottom: 20px;
  width: 260px;
  background: #FFFFFF;
  box-shadow: 0 1px 4px 0 rgba(0, 0, 0, 0.1);
}

.about .about-nav .you .conxt ul li .aboutli-img {
  width: 234px;
  height: 190px;
  line-height: 187px;
  text-align: center;
  margin: 0 auto;
  margin-top: 13px;
}

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

.about .about-nav .you .conxt ul li .ping {
  margin: 16px 13px 10px 13px;
  height: 40px;
}

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

.about .about-nav .you .conxt ul li span {
  display: block;
  width: 120px;
  line-height: 25px;
  height: 27px;
  background: #FFFFFF;
  border: 1px solid #979797;
  box-sizing: border-box;
  margin: 0 auto;
  margin-bottom: 14px;
}

.about .about-nav .you .conxt ul li span a {
  display: block;
  text-align: center;
  font-family: PingFangSC-Regular;
  font-size: 14px;
  color: #515151;
  letter-spacing: 0;
}

.about .about-nav .you .conxt ul li span:hover {
  background: #7F050F;
}

.about .about-nav .you .conxt ul li span:hover a {
  color: #FFFFFF;
}

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