.about_a {
  background: #f5f5f5;
}
.about_a .wrap1600 {
  padding: 133px 5.2083% 145px;
  background: #fff;
  position: relative;
}
.about_a .wrap1600 .sekuai {
  position: absolute;
  width: 200px;
  right: -200px;
  top: 0;
  bottom: 0;
  background: #fff;
}
.about_a .wrap1600 .top {
  margin-bottom: 84px;
}
.about_a .wrap1600 .top .topltbox {
  float: left;
  width: 46.9285%;
}
.about_a .wrap1600 .top .topltbox .tl {
  font-size: 36px;
  color: #333333;
  margin-bottom: 22px;
}
.about_a .wrap1600 .top .topltbox .line {
  width: 200px;
  height: 1px;
  background-color: #e5e5e5;
  position: relative;
  margin-bottom: 57px;
}
.about_a .wrap1600 .top .topltbox .line::after {
  content: "";
  display: block;
  position: absolute;
  left: 0;
  bottom: 0;
  width: 50px;
  height: 2px;
  background-color: #eb6100;
}
.about_a .wrap1600 .top .topltbox .te {
  font-size: 16px;
  line-height: 30px;
  color: #666666;
  overflow: auto !important;
  height: 150px;
}
.about_a .wrap1600 .top .toprtbox {
  float: right;
  width: 42%;
}
.about_b {
  background: #f5f5f5;
  padding-bottom: 100px;
}
.about_b .intitle .tl {
  text-align: center;
}
.about_b .intitle .line {
  margin: 0 auto;
}
.about_b .intitle .line::after {
  left: 50%;
  -webkit-transform: translateX(-50%);
     -moz-transform: translateX(-50%);
      -ms-transform: translateX(-50%);
          transform: translateX(-50%);
}
.about_b .infobox {
  width: 912px;
  margin: 0 auto 67px;
  font-size: 16px;
  line-height: 32px;
  color: #666666;
  text-align: center;
}
.about_b .swiperbox #zt {
  overflow: visible;
  position: relative;
}
.about_b .swiperbox #zt .btn {
  position: absolute;
  top: 50%;
  margin-top: -30px;
  background-color: #444444;
  -webkit-transition: all .4s;
  -o-transition: all .4s;
  -moz-transition: all .4s;
  transition: all .4s;
  z-index: 20;
  cursor: pointer;
}
.about_b .swiperbox #zt .prev_zt {
  left: 0;
  -webkit-border-radius: 0 5px 5px 0;
     -moz-border-radius: 0 5px 5px 0;
          border-radius: 0 5px 5px 0;
}
.about_b .swiperbox #zt .next_zt {
  right: 0;
  -webkit-border-radius: 5px 0 0 5px;
     -moz-border-radius: 5px 0 0 5px;
          border-radius: 5px 0 0 5px;
}
.about_b .swiperbox #zt .btn:hover {
  background: #ee6639;
}
.about_b .swiperbox #zt .swiper-slide {
  position: relative;
  overflow: hidden;
  opacity: .3;
  -webkit-transition: all .4s;
  -o-transition: all .4s;
  -moz-transition: all .4s;
  transition: all .4s;
}
.about_b .swiperbox #zt .swiper-slide .text {
  line-height: 70px;
  position: absolute;
  left: 0;
  bottom: -70px;
  width: 100%;
  text-align: center;
  color: #fff;
  background-color: rgba(11, 11, 11, 0.5);
  -webkit-transition: all .4s;
  -o-transition: all .4s;
  -moz-transition: all .4s;
  transition: all .4s;
  font-size: 22px;
}
.about_b .swiperbox #zt .swiper-slide-active,
.about_b .swiperbox #zt .swiper-slide-next {
  opacity: 1;
}
.about_b .swiperbox #zt .swiper-slide-active .text,
.about_b .swiperbox #zt .swiper-slide-next .text {
  bottom: 0;
}
.about_c {
  padding-bottom: 140px;
}
.about_c .intitle .tl {
  text-align: center;
}
.about_c .intitle .line {
  margin: 0 auto;
}
.about_c .intitle .line::after {
  left: 50%;
  -webkit-transform: translateX(-50%);
     -moz-transform: translateX(-50%);
      -ms-transform: translateX(-50%);
          transform: translateX(-50%);
}
.about_c .infobox {
  margin: 0 auto 82px;
  width: 935px;
  text-align: center;
  font-size: 16px;
  line-height: 32px;
  color: #666666;
}
.about_c .infobox span {
  color: #eb6100;
}
.about_c .kjul {
  margin-bottom: 77px;
}
.about_c .kjul a {
  width: 32.5714%;
  float: left;
  display: block;
  margin: 1.1429% 1.1429% 0 0;
}
.about_c .kjul a .imgbox {
  position: relative;
  overflow: hidden;
  background: rgba(0, 0, 0, 0);
  -webkit-transition: all .4s;
  -o-transition: all .4s;
  -moz-transition: all .4s;
  transition: all .4s;
}
.about_c .kjul a .imgbox img {
  -webkit-transition: all .4s;
  -o-transition: all .4s;
  -moz-transition: all .4s;
  transition: all .4s;
}
.about_c .kjul a .imgbox::after {
  content: "";
  display: block;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  border: 3px solid transparent;
  border-bottom: none;
  -webkit-transition: all .4s;
  -o-transition: all .4s;
  -moz-transition: all .4s;
  transition: all .4s;
}
.about_c .kjul a .text {
  line-height: 70px;
  font-size: 18px;
  color: #333333;
  text-align: center;
  background: #f5f5f5;
  -webkit-transition: all .4s;
  -o-transition: all .4s;
  -moz-transition: all .4s;
  transition: all .4s;
}
.about_c .kjul a:nth-child(1),
.about_c .kjul a:nth-child(2),
.about_c .kjul a:nth-child(3) {
  margin-top: 0;
}
.about_c .kjul a:nth-child(3n) {
  margin-right: 0;
}
.about_c .kjul a:hover .imgbox {
  background: #000000;
}
.about_c .kjul a:hover .imgbox img {
  opacity: .8;
  -webkit-transform: scale(1.1);
     -moz-transform: scale(1.1);
      -ms-transform: scale(1.1);
          transform: scale(1.1);
}
.about_c .kjul a:hover .imgbox::after {
  border-color: #ee6639;
}
.about_c .kjul a:hover .text {
  background: #ee6639;
  color: #fff;
}
@media (max-width: 1440px) {
  .about_a .wrap1600 {
    padding: 120px 5.2083% 80px;
  }
  .about_a .wrap1600 .top {
    margin-bottom: 58px;
  }
  .about_b {
    padding-bottom: 80px;
  }
  .about_b .swiperbox #zt .swiper-slide .text {
    font-size: 16px;
  }
  .about_c {
    padding-bottom: 80px;
  }
  .about_c .kjul {
    margin-bottom: 60px;
  }
  .about_c .kjul a .text {
    font-size: 16px;
  }
  .about_c .infobox {
    margin: 0 auto 60px;
  }
}
@media (max-width: 1366px) {
  .about_a .wrap1600 .top .topltbox .tl {
    font-size: 30px;
  }
}
@media (max-width: 1280px) {
  .about_a .wrap1600 {
    padding-bottom: 60px;
  }
  .about_a .wrap1600 .top {
    margin-bottom: 60px;
  }
  .about_a .wrap1600 .top .topltbox .tl {
    font-size: 24px;
    margin-bottom: 20px;
  }
  .about_a .wrap1600 .top .topltbox .line {
    margin-bottom: 30px;
  }
  .about_a .wrap1600 .top .topltbox .te {
    font-size: 14px;
    line-height: 26px;
  }
  .about_b,
  .about_c {
    padding-bottom: 60px;
  }
  .about_b .infobox,
  .about_c .infobox {
    margin: 0 auto 40px;
  }
  .about_b .swiperbox #zt .swiper-slide .text {
    font-size: 14px;
    line-height: 50px;
  }
  .about_c .kjul a .text {
    font-size: 16px;
    line-height: 50px;
  }
  .about_c .infobox {
    margin: 0 auto 60px;
  }
}
@media (max-width: 1024px) {
  .about_c .kjul {
    margin-bottom: 40px;
  }
  .about_c .kjul a .text {
    line-height: 50px;
    font-size: 16px;
  }
}
@media (max-width: 768px) {
  .about_a {
    background: #fff;
  }
  .about_a .wrap1600 .sekuai {
    display: none;
  }
  .about_a .wrap1600 .top {
    margin-bottom: 40px;
  }
  .about_a .wrap1600 .top .topltbox,
  .about_a .wrap1600 .top .toprtbox {
    float: none;
    width: 100%;
  }
  .about_a .wrap1600 .top .topltbox {
    margin-bottom: 20px;
  }
  .about_b,
  .about_c {
    padding-bottom: 60px;
  }
  .about_b .infobox,
  .about_c .infobox {
    width: 90%;
    line-height: 26px;
    font-size: 14px;
  }
  .about_b .swiperbox #zt {
    padding-bottom: 40px;
  }
  .about_b .swiperbox #zt .swiper-slide .text {
    line-height: 50px;
    font-size: 14px;
  }
  .about_c .kjul a {
    width: 100%;
    margin-right: 0;
    margin-top: 20px;
  }
  .about_c .kjul a:nth-child(2),
  .about_c .kjul a:nth-child(3) {
    margin-top: 20px;
  }
  .about_c .moreBtn {
    margin: 0 auto;
  }
}