/* 背景 */
@media all and (max-width:1920px) {
  .bg {
    height: 56rem;
  }

  .bg .bg-item {
    height: 56rem;
  }
}

@media all and (min-width:1921px) {
  .bg {
    height: 1140px;
  }

  .bg .bg-item {
    height: 1140px;
  }
}

.bg {
  position: relative;
  overflow: hidden;
}

.bg .pointer {
  z-index: 10;
  position: absolute;
  right: 20px;
  top: 0;
  display: flex;
  align-items: center;
  width: 10px;
  height: 100%;
}

.bg .pointer>div>div {
  width: 10px;
  height: 10px;
  margin: 1rem 0;
  background-color: #fff;
  border-radius: 5px;
  cursor: pointer;
}

.bg .pointer>div>div:hover {
  background-color: #eab42e;
}

.bg .pointer>div>.active {
  background-color: #eab42e;
}

.bg .bg-carousel {
  transition: all 0.5s;
}

.bg .bg-item {
  display: block;
  background-color: #fecc6b;
  overflow: hidden;
}

.bg .bg-item img,
.bg .bg-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 产品标题和菜单 */

.product .product-title {
  display: flex;
  flex-direction: row;
  height: 11rem;
}

.product .product-title .title {
  margin: 3rem 2.5rem;
  line-height: 2.5rem;
}

.product .product-title .title>div:first-child {
  font-family: ArialMT;
  font-size: 2.5rem;
  font-weight: normal;
  font-stretch: normal;
}

.product .product-title .title>div:last-child {
  font-family: SourceHanSansCN-Medium;
  font-size: 1.8rem;
  font-weight: normal;
  font-stretch: normal;
}

.product .product-title .line {
  width: 1px;
  height: 6rem;
  margin: 2.5rem 0;
  background-color: #1b1b1b;
}

.product .product-title .nav {
  flex: 1;
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  align-items: center;
}

.product .product-title .nav>div {
  height: 4rem;
  margin: 2rem 0;
  font-family: SourceHanSansCN-Normal;
  font-size: 1rem;
  font-weight: normal;
  font-stretch: normal;
  text-align: center;
  cursor: pointer;
}

.product .product-title .nav>.active {
  color: #e8ac16;
}

.product .product-title .nav>div:not(.active)>div:first-child>img:nth-child(1) {
  display: block;
}

.product .product-title .nav>div:not(.active)>div:first-child>img:nth-child(2) {
  display: none;
}

.product .product-title .nav>.active>div:first-child>img:nth-child(1) {
  display: none;
}

.product .product-title .nav>.active>div:first-child>img:nth-child(2) {
  display: block;
}

.product .product-title .nav>div>div:first-child {
  display: flex;
  justify-content: center;
  height: 2rem;
}

.product .product-title .nav>div>div img {
  width: auto;
  height: 2rem;
}

.product .product-title .nav>div>div:last-child {
  height: 20px;
  line-height: 4rem;
}

/* 产品轮播图 */
.product-img {
  position: relative;
  width: 100%;
  overflow: hidden;
}

@media all and (min-width:1921px) {
  .product-img>div:not(.btn) {
    height: 57rem !important;
  }
}

.product-img>div:not(.btn) {
  width: 1000%;
  max-width: 1000%;
  height: 47rem;
  overflow: hidden;
  transition: all 0.3s;
}

.product-img>div:not(.btn)>a {
  position: relative;
  display: block;
  float: left;
  width: 100vw;
  height: 100%
}

.product-img>div:not(.btn)>a img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-img .btn {
  z-index: 99;
  position: absolute;
  top: 50%;
  width: 3.25rem;
  height: 3.25rem;
  line-height: 3.25rem;
  border-radius: 50%;
  text-align: center;
  cursor: pointer;
}

.product-img .btn img {
  width: 100%;
  height: 100%;
}

.product-img .left {
  left: 0;
  margin-left: 5px;
}

.product-img .left span {
  display: inline-block;
  margin: 0 0 0 -2px;
}

.product-img .right {
  right: 0;
  margin-right: 5px;
}

.product-img .right span {
  display: inline-block;
  margin: 0 -2px 0 0;
}

/* 解决方案 */
.advantage {
  position: relative;
  width: 100%;
  height: 68rem;
  margin: 4vw 0 0 0;
  overflow: hidden;
}

.advantage>img {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: auto;
}

.advantage-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 90%;
  text-align: center;
}

/* .advantage-content>.title_ch {
  line-height: 5rem;
  color: #080606;
  font-family: SourceHanSansCN-Medium;
  font-size: 3rem;
  font-weight: normal;
  font-stretch: normal;
  letter-spacing: 5px;
}

.advantage-content>.title_us {
  line-height: 2vw;
  font-family: ArialMT;
  font-size: 1.3rem;
  font-weight: normal;
  font-stretch: normal;
} */

.advantage-content .advantage-img {
  display: flex;
  flex-flow: row wrap;
  justify-content: space-between;
  margin: 0 auto;
  transition: all 0.5s;
  opacity: 0;
}

@media all and (max-width:1440px) {
  .advantage-content .advantage-img>div {
    width: 24rem;
    height: 24rem;
  }

  .advantage-content .advantage-img>.img:hover>div {
    width: 25rem;
    height: 25rem;
  }
}

@media all and (min-width:1441px) {
  .advantage-content .advantage-img>div {
    width: 22rem;
    height: 22rem;
  }

  .advantage-content .advantage-img>.img:hover>div {
    width: 23rem;
    height: 23rem;
  }
}

@media all and (min-width:1921px) {
  .advantage {
    height: 78rem !important;
  }
}

.advantage-content .advantage-img>div {
  position: relative;
  float: left;
  margin: 0.5rem 0;
  /* perspective: 800; */
  /* -webkit-perspective: 800; */
  /* Safari 和 Chrome */
  overflow: hidden;
}

.advantage-content .advantage-img>div:not(.img)>div {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  transform-style: preserve-3d;
  transition: all 0.3s;
}

.advantage-content .advantage-img>div:not(.img)>div>div {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #212529;
}

.advantage-content .advantage-img>div:not(.img)>div>div:not(.other) {
  z-index: 1;
}

.advantage-content .advantage-img>div:not(.img)>div>.other {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #212529;
  color: #fff;
  /* transform: translateZ(-1px); */
  transform: rotateY(180deg);
}

.advantage-content .advantage-img>div:not(.img)>div>.other>div {
  padding: 4rem;
  line-height: 2rem;
  text-align: center;
}

.advantage-content .advantage-img>div:not(.img):hover>div {
  transform: rotateY(180deg);
}

.advantage-content .advantage-img>div:not(.img):hover>div .other {
  z-index: 2;
}

.advantage-content .advantage-img>.img {
  position: relative;
  overflow: hidden;
}

.advantage-content .advantage-img>div .icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 45%;
  margin: 10% 0 0 0;
}

.advantage-content .advantage-img>div .title_ch {
  height: 4rem;
  line-height: 4rem;
  color: #e8ac16;
  font-size: 2.08rem;
  text-align: center;
}

.advantage-content .advantage-img>div .title_us {
  height: 2rem;
  line-height: 2rem;
  color: #fde8b5;
  font-size: 1.04rem;
  text-align: center;
  overflow: hidden;
}

.advantage-content .advantage-img>div:not(.img) img {
  width: 26%;
  height: auto;
}

.advantage-content .advantage-img>.img>div {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: all 0.3s;
}

.advantage-content .advantage-img>.img:hover>div {
  margin: -0.5rem 0 0 -0.5rem;
}

.advantage-content .advantage-img>.img>div img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 新闻中心 */
.news-center {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  height: 33rem;
  padding: 0 0 50px 0;
}

.news-center>div {
  display: flex;
  flex-direction: column;
  width: 33%;
  background-color: #f8f8f8;
}

.news-center>div>div {
  position: relative;
  flex: 1;
  overflow: hidden;
}

.news-center>div>.news-img>div {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: all 0.3s;
}

.news-center>div:hover>.news-img>div {
  width: 102%;
  height: 102%;
  margin: -0.25% 0 0 -0.25%;
}

.news-center>div>.news-img>div>img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.news-center .news-main {
  margin-left: 2.5rem;
  margin-right: 2.5rem;
}

.news-center .content-line {
  border-bottom: 1px solid #aaaaaa;
}

.news-center .news-title {
  display: block;
  height: 5rem;
  line-height: 5rem;
  font-family: SourceHanSansCN-Medium;
  font-size: 1.37rem;
  font-weight: normal;
  font-stretch: normal;
}

.news-center .news-time {
  font-family: SourceHanSansCN-Normal;
  font-size: 1rem;
  font-weight: normal;
  font-stretch: normal;
  color: #949494;
  white-space: nowrap;
  overflow: hidden;
}

.news-center .news-content {
  max-height: 6.24rem;
  line-height: 2.08rem;
  margin-top: 1vw;
  margin-bottom: 1vw;
  font-family: SourceHanSansCN-Normal;
  font-size: 1rem;
  font-weight: normal;
  font-stretch: normal;
  color: #5d5d5d;
}

.more-ellipsis {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}

.more {
  max-height: 35px;
  line-height: 35px;
  margin: 0 1.5vw;
  font-size: 12px;
}

/* 公司 */
.company-info {
  position: relative;
  height: 680px;
  overflow: hidden;
}

.company-info img {
  width: 100%;
  height: auto;
  vertical-align: bottom;
}

.company-info>div {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.company-info>div>.company-name {
  height: 5rem;
  line-height: 5rem;
  margin-top: 7rem;
  font-size: 2.2rem;
}

.company-info>div>.company-name>div {
  float: right;
  width: 40%;
}

.company-info>div>.company-info-content>div {
  text-indent: 2rem;
  float: right;
  width: 40%;
}

.company-info>div>div:not(.company-name) {
  line-height: 3rem;
  font-size: 1.2rem;
}

/* 战略合作 */
.strategic img {
  width: 100%;
  height: auto;
  margin-bottom: 11rem;
}