body {
  font-size: 12px;
}
.fl {
  float: left;
}
.fr {
  float: right;
}
/* index1 */
.container-fisrt-content {
  height: 100%;
  width: 100%;
}
.container-fisrt-content img {
  position: fixed;
  left: 0;
  right: 0;
  margin: 0 auto;
  top: 100%;
  opacity: 0;
  width: 50%;
}

.container-header {
  width: 100%;
  font-size: 12px;
}
.container-header .item {
  width: 100%;
  position: relative;
}
.container-header .item .arrow1 {
  position: absolute;
  bottom: -1px;
  right: 69px;
}
.container-header .item .arrow2 {
  position: absolute;
  bottom: -1px;
  left: 69px;
}
.container-header .item img {
  display: block;
}
.container-header .item2 {
  background: #ff4a4a;
  color: #fff;
  overflow: hidden;
  padding: 0 13px;
  padding-bottom: 20px;
}
.container-header .item3 {
  background: #ff8800;
}
.container-header .item2 .metallurgy-title {
  margin-top: 0;
  font-size: 24px;
  opacity: 0;
  font-weight: bold;
}
.container-header .item2 .js-metallurgy {
  margin-top: 30px;
  opacity: 0;
}
.container-header .item2 a {
  margin-top: 16px;
  width: 85px;
  height: 24px;
  line-height: 24px;
  background-color: #fff;
  display: block;
  color: #ff8800;
  padding-left: 8px;
  font-weight: bold;
  background-image: url(../img/jiantou1.png);
  background-position: 58px 8px;
  background-size: 20px 10px;
  background-repeat: no-repeat;
}
.container-header .item3 a {
  color: #ff4a4a;
  background-image: url(../img/jiantou2.png);
}

/* index2 */
.header {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 99;
  width: 100%;
  height: 50px;
  background-color: rgba(0, 0, 0, 0.3);
  padding: 13px;
}
.header .search {
  margin-right: 32px;
}
.banner {
  width: 100%;
  height: 360px;
  color: #fff;
  overflow: hidden;
}
.banner .title {
  font-size: 16px;
  margin-top: 60px;
  font-weight: bold;
  padding: 0 30px;
}

.banner .content {
  margin-top: 10px;
  padding: 0 30px;
}
.banner .contentApp {
  padding: 0 30px;
}
.logo-style{

  padding: 10px 30px 0px 30px;
}

.banner a {
  margin-top: 16px;
  width: 115px;
  height: 24px;
  line-height: 24px;
  background-color: #ff8800;
  display: block;
  color: #fff;
  padding-left: 8px;
  font-weight: bold;
  background-position: 88px 8px;
  background-size: 20px 10px;
  background-repeat: no-repeat;
  margin-left: 30px;
}
.product {
  width: 100%;
  height: auto;
  background-color: #00122e;
  /*background: url(../img/bg.png) no-repeat center;*/
  background-size: 375px 100%;
  padding: 10px 0;
}
.product .title {
  font-size: 16px;
  color: #ffffff;
  font-weight: bold;
  padding: 0 10px;
}
.product .choice {
  padding: 0 10px;
  position: relative;
  z-index: 5;
}
.product .choice dl {
  width: 100%;
  height: 30px;
  background-color: #00122e;
  box-shadow: 2px 2px 6px 1px rgba(182, 182, 182, 0.5);
  position: relative;
  background-image: url(../img/product-arrow.png);
  background-position: 95% center;
  background-size: 5px 9px;
  background-repeat: no-repeat;
  margin-top: 16px;
  z-index: 2;
}
.product .choice .vote {
  background-image: url(../img/product-arrow2.png);
  background-size: 9px 5px;
  background-position: 95% center;
  z-index: 5;
}
.product .choice dl dt {
  width: 280px;
  height: 20px;
  position: absolute;
  line-height: 20px;
  left: 2%;
  top: 5px;
  font-size: 12px;
  border-left: 5px solid #ff8800;
  padding-left: 10px;
}
.product .choice dl dd {
  position: absolute;
  z-index: 3;
  width: 100%;
  background-color: #00122e;
  left: 0;
  top: 30px;
  display: none;
}
.product .choice dl dd ul li {
  height: 40px;
  line-height: 40px;
  padding-left: 9%;
  border-top: 1px solid #efefef;
}

.list {
  overflow: auto;
  width: 100%;
  height: 170px;
  margin-top: 20px;
  position: relative;
  z-index: 1;
}

.list_in {
  height: 170px;
}

.list a {
  margin-left: 10px;
  width: 180px;
  height: 170px;
  overflow: hidden;
  float: left;
  display: block;
}

.list a:nth-last-of-type(1) {
  margin-right: 10px;
}

.list a dl {
  width: 180px;
  height: 170px;
  background-color: #fff;
  text-align: center;
}

.list a dl dt {
  width: 180px;
  height: 110px;
}
.product .list a dl dt img {
  width: 180px;
  height: 102px;
}
.project .list a dl dt img {
  width: 180px;
  height: 135px;
}
.list a dl dd {
  margin-top: 14px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}
.project {
  width: 100%;
  height: 560px;
  background: url(../img/project.png) no-repeat center;
  background-size: 375px 560px;
  padding: 10px 0;
}
.project .title {
  font-size: 16px;
  color: #fff;
  font-weight: bold;
  padding: 0 10px;
  padding-top: 10px;
}

.project .list {
  overflow: auto;
  width: 100%;
  height: 195px;
  margin-top: 10px;
  margin-bottom: 10px;
}

.project .list_in {
  height: 195px;
}

.project .list a {
  margin-left: 10px;
  width: 180px;
  height: 195px;
  overflow: hidden;
  float: left;
  display: block;
}

.list a dl {
  width: 180px;
  height: 195px;
  background-color: #fff;
  text-align: center;
}

.project .list a dl dd {
  padding: 0 10px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}
.project .list a dl dt {
  width: 180px;
  height: 133px;
  margin-bottom: 10px;
}

.industry {
  width: 355px;
  height: 100px;
  margin: 0 auto;
  margin-top: 18px;
  background: url(../img/512.png) no-repeat center;
  background-size: 355px 100px;
  color: #fff;
  overflow: hidden;
}

.industry .top {
  text-align: center;
  margin-top: 28px;
  margin-bottom: 15px;
}
.industry a {
  width: 70px;
  height: 20px;
  background-color: #ff5000;
  display: block;
  margin: 0 auto;
  color: #fff;
  line-height: 20px;
  text-align: center;
}
.federation {
  width: 355px;
  height: 100px;
  margin: 0 auto;
  margin-top: 18px;
  background: url(../img/5121.png) no-repeat center;
  background-size: 355px 100px;
  color: #fff;
  overflow: hidden;
}

.federation .top {
  text-align: center;
  margin-top: 28px;
  font-size: 14px;
  margin-bottom: 15px;
}
.federation a {
  width: 70px;
  height: 20px;
  background-color: #ff5000;
  display: block;
  margin: 0 auto;
  color: #fff;
  line-height: 20px;
  text-align: center;
}

.contact {
  width: 100%;
  height: 212px;
  background: url(../img/512451.png) no-repeat center;
  background-size: 375px 212px;
  color: #fff;
  overflow: hidden;
}

.contact .title {
  font-size: 16px;
  text-align: center;
  margin-top: 27px;
  font-weight: bold;
}
.contact .sendImg {
  width: 21px;
  height: 21px;
  margin: 0 auto;
  margin-top: 37px;
  margin-bottom: 4px;
}

.contact .send {
  font-size: 14px;
  text-align: center;
}

.contact .call {
  width: 250px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-top: 10px;
}

.contact .call dl {
  display: flex;
  margin-top: 10px;
}
.contact .call dl dt {
  margin-right: 5px;
}

.follow {
  width: 100%;
  background-color: #000000;
  height: 130px;
  color: #fff;
  overflow: hidden;
}

.follow .title {
  margin-top: 14px;
  text-align: center;
  font-size: 14px;
  font-weight: bold;
}

.follow ul {
  width: 115px;
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  margin-top: 14px;
}
.follow ul li {
  width: 22px;
}
.follow .content {
  color: #6b6b6b;
  font-size: 12px;
  text-align: center;
}

.menuDia {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.3);
  z-index: 100;
  display: none;
}
.menu_in {
  height: 100%;
  width: 295px;
  padding: 15px;
  background-color: #222222;
  position: absolute;
  right: 0;
  top: 0;
}

.menu_in .close {
  height: 20px;
  width: 100%;
}

.menu_in ul {
  width: 100%;
  margin-top: 20px;
}

.menu_in ul li {
  width: 100%;
  height: 40px;
  line-height: 40px;
  border-bottom: solid 1px #979797;
}

.menu_in ul li a {
  width: 100%;
  height: 40px;
  line-height: 40px;
  color: #fff;
  font-size: 16px;
  display: block;
}

.menu_in dl {
  margin: 0 auto;
  margin-top: 120px;
  text-align: center;
}

.menu_in dl dd {
  font-size: 16px;
  color: #fff;
  margin-top: 10px;
}
.swiper-item {
  position: relative;
}
.swiper-item img {
  position: absolute;
  left: 0;
  top: 0;
  z-index: 1;
  width: 100%;
  height: 360px;
}
.swiper-item>*{
  position: relative;
  z-index: 2;
}