/* .about-us-banner start */
.about-us-banner {
  height: 667px;
  background: url("../images/index/banner.jpg") no-repeat center center;
  background-size: cover;
  color: #fff;
  text-align: center;
}
.about-us-banner .banner-box {
  margin: 200px auto 0;
  color: #fff;
}
.about-us-banner .banner-box h4 {
  width: 100%;
  font-size: 82px;
  margin-top: 0;
  margin-bottom: 35px;
  text-align: center;
  font-weight: normal;
}
.about-us-banner .banner-box p {
  width: 100%;
  line-height: 48px;
  font-size: 24px;
  text-align: left;
}
/* .about-us-banner end */
/* .about-us-banner-bottom start */
.about-us-banner-bottom {
  height: 824px;
  background: url("../images/about_us/bg_2.jpg") no-repeat center center;
  background-size: cover;
}
.about-us-banner-bottom h4 {
  font-size: 52px;
  color: #fff;
  margin: 28px auto 4px;
  text-align: center;
}
.about-us-banner-bottom hr {
  display: block;
  width: 73px;
  border: 3px solid transparent;
  border-top-color: #0074c3;
  margin: 0 auto;
}
.about-us-banner-bottom p {
  width: 990px;
  margin: 550px auto 0;
  font-size: 22px;
  line-height: 42px;
}
/* .about-us-banner-bottom end */
/* .company-introduction start */
.company-introduction {
  background: #f6f6f6;
  /*div {

    a {
      display: inline-block;
      width: 280px;
      height: 270px;
      text-align: center;
      margin-right: 17px;
      border-right: 1px solid #c3c3c3;
      position: relative;
    }
    a:nth-child(1) {
      background: url("../images/about_us/zhongjiang.jpg") no-repeat;
      border-bottom: 1px solid #c3c3c3;
    }
    a:nth-child(1)::before {
      content: '';
      display: inline-block;
      width: 17px;
      height: 20px;
      position: absolute;
      left: 0;
      bottom: -10px;
      background: #f6f6f6;
    }
    a:nth-child(1)::after {
      content: '';
      display: inline-block;
      width: 34px;
      height: 20px;
      position: absolute;
      right: -17px;
      bottom: -10px;
      background: #f6f6f6;
    }
    a:nth-child(2) {
      background: url("../images/about_us/zhongrong.jpg") no-repeat;
      border-bottom: 1px solid #c3c3c3;
    }
    a:nth-child(2)::after {
      content: '';
      display: inline-block;
      width: 34px;
      height: 20px;
      position: absolute;
      right: -17px;
      bottom: -10px;
      background: #f6f6f6;
    }
    a:nth-child(3) {
      background: url("../images/about_us/guomin.jpg") no-repeat;
      border-bottom: 1px solid #c3c3c3;
    }
    a:nth-child(3)::after {
      content: '';
      display: inline-block;
      width: 34px;
      height: 20px;
      position: absolute;
      right: -17px;
      bottom: -10px;
      background: #f6f6f6;
    }
    a:nth-child(4) {
      background: url("../images/about_us/guangda.jpg") no-repeat;
      margin-right: 0;
      border-right: none;
      border-bottom: 1px solid #c3c3c3;
    }
    a:nth-child(4)::after {
      content: '';
      display: inline-block;
      width: 17px;
      height: 20px;
      position: absolute;
      right: 0px;
      bottom: -10px;
      background: #f6f6f6;
    }
    a:nth-child(5) {
      background: url("../images/about_us/zhongxing.jpg") no-repeat;
    }
    a:nth-child(6) {
      background: url("../images/about_us/fangzheng.jpg") no-repeat;
    }
    a:nth-child(7) {
      background: url("../images/about_us/huaxing.jpg") no-repeat;
    }
    a:nth-child(8) {
      background: url("../images/about_us/zhongtai.jpg") no-repeat;
      margin: 0;
      border-right: none;
    }

  }*/
}
.company-introduction > div {
  width: 1150px;
  margin: 0 auto;
  padding-bottom: 80px;
}
.company-introduction h2 {
  height: 50px;
  line-height: 50px;
  font-size: 36px;
  padding-left: 20px;
  margin: 40px auto;
  border-left: 3px solid #0074c3;
}
.company-introduction .gudong-list {
  margin: 0 auto;
}
.company-introduction .gudong-list li {
  float: left;
  width: 33.33%;
  text-align: center;
}
.company-introduction .gudong-list li > div {
  padding: 0 50px 60px;
  border-right: 1px solid #c3c3c3;
}
.company-introduction .gudong-list li h4 {
  font-size: 24px;
  color: #000;
  line-height: 75px;
}
.company-introduction .gudong-list li h6 {
  font-size: 18px;
  color: #666666;
  margin: 10px 0 20px;
}
.company-introduction .gudong-list li p {
  line-height: 27px;
  font-size: 15px;
  color: #000;
  text-align: left;
}
.company-introduction .gudong-list li:last-child > div {
  border-right: 0;
}
.company-introduction .friend-list a {
  float: left;
  position: relative;
  width: 25%;
  height: 287.5px;
  border-top: 1px solid #c3c3c3;
  background-repeat: no-repeat;
  background-position: center center;
}
.company-introduction .friend-list a:before {
  content: '';
  position: absolute;
  width: 0;
  height: 100%;
  border-left: 1px solid #c3c3c3;
}
.company-introduction .friend-list a:after {
  content: '';
  position: absolute;
  width: 40px;
  height: 40px;
  background: #f6f6f6;
  bottom: -20px;
  right: -20px;
  z-index: 1;
}
.company-introduction .friend-list a:nth-child(4n+1):before {
  border-left: 0;
}
.company-introduction .friend-list a:nth-child(1),
.company-introduction .friend-list a:nth-child(2),
.company-introduction .friend-list a:nth-child(3),
.company-introduction .friend-list a:nth-child(4) {
  border-top: 0;
}
/* .company-introduction end */
/* .address-map */
.address-map {
  height: 575px;
  width: 100%;
  background: url("../images/about_us/map.jpg") no-repeat center center;
  background-size: cover;
}
.address-map > div {
  width: 1200px;
  height: 100%;
  margin: 0 auto;
}
.address-map > div > div {
  margin: 150px 0 0 240px;
  width: 291px;
  height: 207px;
  padding: 32px 18px 0;
  background: #fff;
  position: relative;
}
.address-map > div > div span {
  display: inline-block;
  width: 66px;
  height: 66px;
  border-radius: 50%;
  background: #121e2c;
  position: absolute;
  left: 9px;
  top: 18px;
  text-align: center;
}
.address-map > div > div span img {
  margin-top: 18px;
}
.address-map > div > div h4 {
  font-size: 36px;
  color: #444444;
  line-height: 46px;
  margin-left: 64px;
}
.address-map > div > div hr {
  display: block;
  width: 149px;
  border: none;
  border-bottom: 1px solid #a9a9a9;
  margin: 5px auto 20px;
}
.address-map > div > div p {
  font-size: 18px;
  color: #828282;
  line-height: 24px;
}
.address-map > div > div h3 {
  font-size: 25px;
  color: #fb2274;
  margin-top: 20px;
}
/* .address-map */
@media screen and (min-width: 769px) {
  body .company-introduction > div,
  body .about-us-banner .banner-box {
    width: 990px;
  }
  body .company-introduction .friend-list a {
    width: 247.5px;
    height: 247.5px;
  }
}
@media screen and (min-width: 1281px) {
  body .company-introduction > div,
  body .about-us-banner .banner-box {
    width: 1150px;
  }
  body .company-introduction .friend-list a {
    width: 287.5px;
    height: 287.5px;
  }
}
@media screen and (min-width: 1441px) {
  body .company-introduction > div,
  body .about-us-banner .banner-box {
    width: 1360px;
  }
  body .company-introduction .friend-list a {
    width: 340px;
    height: 340px;
  }
}
