.banner {
  height: 0;
  padding-bottom: 56.25%;
  width: 100%;
  position: relative;
  overflow: hidden;
}
.banner .banner_wrap {
  position: absolute;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.banner .banner_ul {
  height: 100%;
  -webkit-transform: translate3d(0, 0, 0);
  transform: translate3d(0, 0, 0);
  overflow: hidden;
}
.banner .banner_li {
  position: relative;
}
.banner .banner_li img {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}
.banner .banner_li .onbanner_wrap {
  position: absolute;
  width: 100%;
  top: -50px;
  visibility: hidden;
  opacity: 0;
  -webkit-transition: 0.5s all ease;
  transition: 0.5s all ease;
  height: 100%;
  left: 0;
}
.banner .banner_li .onbanner_wrap.cur {
  top: 0;
  visibility: visible;
  opacity: 1;
}
.banner .banner_li .onbanner_wrap .left_text {
  position: absolute;
  top: 23.6%;
  left: 12.5%;
}
.banner .banner_li .onbanner_wrap .top_tit {
  font-size: 72px;
  color: #fff;
  font-style: italic;
}
.banner .banner_li .onbanner_wrap .span_wb {
  font-weight: bold;
}
.banner .banner_li .onbanner_wrap .span_ob {
  font-weight: bold;
  color: #eb8d10;
}
.banner .banner_li .onbanner_wrap .bottom_txt {
  color: rgba(255, 255, 255, 0.7);
  font-size: 18px;
  line-height: 36px;
  font-style: italic;
}
.banner .banner_li .onbanner_wrap .bottom_txt > span {
  color: #fff;
}
.banner .banner_li .onbanner_wrap .right_text {
  position: absolute;
  bottom: 18.9%;
  right: 12.5%;
  color: #fff;
  font-size: 20px;
  font-weight: bold;
}
.banner .banner_li .onbanner_wrap .right_text:before {
  content: "";
  display: block;
  position: absolute;
  right: 0;
  bottom: -25px;
  width: 100px;
  height: 1px;
  background: #d8d8d8;
}
.banner .banner_li .onbanner_wrap .right_text:after {
  content: "";
  display: block;
  width: 37px;
  height: 5px;
  background: #eb8d10;
  position: absolute;
  right: 0;
  bottom: -27px;
}
.banner .banner_nav {
  position: absolute;
  left: 12.5%;
  bottom: 15.7%;
  z-index: 2;
}
.banner .banner_nav .bn_item {
  display: block;
  color: #fff;
  padding: 8px 0;
  cursor: pointer;
  max-width: 100px;
  opacity: 0.5;
}
.banner .banner_nav .bn_item.cur {
  position: relative;
  font-style: italic;
  opacity: 1;
}
.banner .banner_nav .bn_item.cur:after {
  content: "";
  display: block;
  position: absolute;
  top: 12px;
  left: -12px;
  width: 3px;
  height: 14px;
  background: #fff;
  -webkit-transform: rotateZ(14deg);
  transform: rotateZ(14deg);
}
.intro {
  height: 287px;
  background: url('../img/intro_bac.png') no-repeat center;
  background-size: cover;
}
.intro .wrap {
  height: 100%;
}
.intro .intro_ul {
  height: 100%;
}
.intro .intro_li {
  float: left;
  width: 33.3%;
  text-align: center;
  display: table;
  height: 100%;
}
.intro .intro_li .txt_wrap {
  display: table-cell;
  vertical-align: middle;
}
.intro .intro_li .num {
  font-size: 60px;
  margin-bottom: 33px;
  position: relative;
}
.intro .intro_li .num:after {
  content: "";
  display: block;
  width: 30px;
  height: 2px;
  background: #eb8d10;
  position: absolute;
  left: 50%;
  margin-left: -15px;
  bottom: -16px;
}
.intro .intro_li .name {
  font-size: 16px;
}
.pro {
  padding: 129px 0 85px 0;
}
.pro .onpic_div {
  position: absolute;
  bottom: 30px;
  left: 0;
  width: 100%;
  color: #fff;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  padding-left: 40px;
}
.pro .onpic_div .onpic_tit {
  font-size: 30px;
  font-weight: bold;
  line-height: 1.4em;
}
.pro .onpic_div .onpic_dec {
  font-size: 20px;
  line-height: 1.4em;
}
.pro .left_area {
  width: 49%;
  float: left;
}
.pro .left_area .rect_l {
  width: 100%;
  padding-bottom: 115.25%;
  position: relative;
}
.pro .left_area .rect_l > img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.pro .right_area {
  width: 49%;
  float: right;
}
.pro .right_area .right_wrap {
  width: 100%;
  padding-bottom: 115.25%;
  position: relative;
}
.pro .right_area .top_area {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 48.53%;
}
.pro .right_area .bottom_area {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 48.53%;
}
.pro .right_area .rect_t,
.pro .right_area .rect_b {
  width: 100%;
  padding-bottom: 55.93%;
  position: relative;
}
.pro .right_area .rect_t > img,
.pro .right_area .rect_b > img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.pro .rect_area {
  overflow: hidden;
  cursor: pointer;
}
.pro .rect_area > img {
  -webkit-transition: 0.3s all ease;
  transition: 0.3s all ease;
}
.pro .rect_area .onpic_div {
  -webkit-transition: 0.3s all ease;
  transition: 0.3s all ease;
}
.pro .rect_area:hover > img {
  -webkit-transform: scale(1.2, 1.2);
  transform: scale(1.2, 1.2);
}
.pro .rect_area:hover .onpic_div {
  -webkit-transform: translateY(-20px);
  transform: translateY(-20px);
}
.zzs {
  text-align: center;
  padding-bottom: 172px;
  margin-bottom: 20px;
}
@media only screen and (max-width: 1600px) {
  .banner .banner_li .onbanner_wrap .top_tit {
    font-size: 54px;
  }
  .banner .banner_li .onbanner_wrap .bottom_txt {
    font-size: 20px;
  }
}
@media only screen and (max-width: 1440px) {
  .banner .banner_li .onbanner_wrap .top_tit {
    font-size: 44px;
  }
  .banner .banner_li .onbanner_wrap .bottom_txt {
    font-size: 16px;
  }
  .banner .banner_nav .bn_item {
    font-size: 12px;
  }
}
@media only screen and (max-width: 1300px) {
  .intro .intro_li .num {
    font-size: 50px;
  }
}
@media only screen and (max-width: 1024px) {
  .banner .banner_li .onbanner_wrap .top_tit {
    font-size: 32px;
  }
  .banner .banner_li .onbanner_wrap .bottom_txt {
    font-size: 14px;
  }
  .intro .intro_li .num {
    font-size: 40px;
  }
  .intro {
    height: 180px;
  }
}
@media only screen and (max-width: 900px) {
  .banner .banner_nav .bn_item {
    padding: 4px 0;
  }
  .banner .banner_li .onbanner_wrap .right_text {
    font-size: 14px;
  }
  .banner .banner_li .onbanner_wrap .top_tit {
    font-size: 24px;
  }
  .banner .banner_li .onbanner_wrap .bottom_txt {
    font-size: 12px;
  }
}
@media only screen and (max-width: 700px) {
  .banner .banner_nav {
    display: none;
  }
  .banner .banner_li .onbanner_wrap .right_text {
    font-size: 12px;
  }
  .banner .banner_li .onbanner_wrap .top_tit {
    font-size: 18px;
  }
  .intro .intro_li .num {
    font-size: 24px;
  }
  .intro .intro_li .name {
    font-size: 12px;
  }
  .intro .intro_li .num:after {
    bottom: -7px;
  }
  .intro .intro_li .num {
    margin-bottom: 14px;
  }
  .intro {
    height: 110px;
  }
  .pro {
    padding: 60px 0 60px 0;
  }
  .pro .onpic_div .onpic_tit {
    font-size: 16px;
  }
  .pro .onpic_div .onpic_dec {
    font-size: 12px;
  }
  .pro .onpic_div {
    padding-left: 15px;
    bottom: 10px;
  }
  .zzs {
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    padding: 0 2%;
  }
  .zzs img {
    max-width: 100%;
  }
}
@media only screen and (max-width: 450px) {
  .banner .banner_li .onbanner_wrap .left_text {
    left: 4.5%;
    top: 24.6%;
  }
  .banner .banner_li .onbanner_wrap .right_text {
    right: 4.5%;
  }
  .intro .intro_li .num {
    font-size: 14px;
  }
  .banner .banner_li .onbanner_wrap .bottom_txt {
    display: none;
  }
  .pro .left_area {
    width: 100%;
    margin-bottom: 3%;
  }
  .pro .left_area .rect_l {
    padding-bottom: 57.625%;
  }
  .pro .left_area .rect_l > img {
    height: 200%;
  }
  .pro .onpic_div {
    padding-left: 20px;
    bottom: 20px;
  }
  .pro .right_area {
    width: 100%;
  }
}