.video-modal {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: #000;
  z-index: 999;
  display: none;
}
.video-modal .modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 58px;
  height: 58px;
  overflow: hidden;
  background: url('../images/video_close.png');
  cursor: pointer;
}
.video-modal .modal-close:hover {
  background-position-y: -68px;
}
.video .pic .content .play{
  width: 82px;
  height: 82px;
  margin: 0 auto;
}
.video .pic .content .play span{
  display: block;
  width: 100%;
  height: 100%;
  background: url(../images/play.png) no-repeat center center;
  background-size: 100%;
}

.banner {

  /* width: 100vw;
    height: 100vh; */
}

.banner .swiper-container {
  height: 100%;
}

.banner .swiper-container .swiper-wrapper {
  height: 100%;
}

.banner .swiper-container .swiper-slide {
  /* position: relative; */
  background: no-repeat center center /cover;
}
.banner .swiper-container .swiper-slide  .pic video {
height: auto;
width:100%;
}
.banner .swiper-container .swiper-slide  .pic video p{
color: #000;
}
.banner .swiper-container .swiper-slide .layout {
  position: absolute;
    left: 50%;
    bottom: 41px;
    transform: translatex(-50%);
width: 100%;
}

.banner .swiper-container .swiper-slide h3 {
  width: 100%;
  font-size: 28px;
  color: #fff;
  line-height: 82px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  overflow: hidden;
text-align: center;
}

.banner .swiper-container .swiper-slide a {
  display: block;
  width: 100%;
  height: 100%;
position: relative;
}
.banner .swiper-container .swiper-slide a .pic {
height: 100%;
}

.banner .swiper-container .swiper-pagination {
  bottom: 36px;
    bottom: 36px;
    top: auto;
    width: 17%;
    left: 50%;
    border-radius: 28px;
    transform: translateX(-50%);
}
.banner .swiper-button-prev {
left: 55px;
width: 20px;
height: 38px;
background: url(../images/slide_prev.png) no-repeat center center ;
}
.banner  .swiper-button-next {
right: 55px;
width: 20px;
height: 38px;
background: url(../images/slide_next.png) no-repeat center center ;
}
.banner .swiper-container .swiper-pagination-bullet {
  width: 103px;
  height: 3px;
  background-color: #fff;
  border-radius: 0;
  opacity: 1;
  margin: 0 15px;
}
.banner .swiper-container .swiper-pagination-progress .swiper-pagination-progressbar {
border-radius: 28px;

}
.banner .swiper-container .swiper-pagination-bullet-active {
  width: 233px;
  background-color: #951214;
}


/* 公用标题样式 */
.title-box {
  padding: 80px 0 60px 0;
  text-align: center;
}

.title-box .title h3 {
  display: block;
  font-size: 40px;
  font-weight: bold;
  color: #242728;

}

.title-box .title h3::after {
  content: "";
  display: block;
  width: 73px;
  height: 6px;
  background-color: #0a4cc1;
  margin: 21px auto;
}

.title-box .title .keyword {
  display: block;
  font-size: 18px;
  color: #999;

}
 .title-box .title .keyword a{
  color: #999;
   border-bottom: 1px dashed;
}
/* 关于我们 */
.about-box {
  position: relative;
  height: 583px;
}

.about-box .position1 {
  position: absolute;
  left: 0;
  top: 0;
  width: 117px;
  height: 362px;
  background: url(../images/position-bg1.png) no-repeat left top;
  z-index: 10;
  background-size: 100%;
}

.about-box .position2 {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 124px;
  height: 370px;
  background: url(../images/position-bg2.png) no-repeat right bottom;
  z-index: 10;
  background-size: 100%;
}

.about-box .about-list {
  width: 100%;
  height: 100%;
}
.about-box .about-list >div{
height: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}
.about-box .about-item {
  position: relative;
  float: left;
  height: 100%;
  transition: all 0.3s ease;
  -moz-transition: all 0.3s ease;
  -webkit-transition: all 0.3s ease;
  -o-transition: all 0.3s ease;
  -ms-transition: all 0.3s ease;
}

.about-box .about-item h3 {
  float: left;
  font-size: 36px;
  color: #fff;
}

.about-box .about-item .content {
  display: none;
  padding-left: 192px;
}

.about-box .about-item .content .dec {
  font-size: 20px;
  color: #fff;
  line-height: 36px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}

.about-box .about-item .content .num {
  margin-top: 78px;
}

.about-box .about-item .content .num1,
.about-box .about-item .content .num2 {
  float: left;
  height: 75px;
  border-left: 1px solid #fff;
  padding-left: 28px;
}

.about-box .about-item .content .num1 {
  margin-right: 105px;
}

.about-box .about-item .content .num2 {
  float: left;
}

.about-box .about-item .content .num1 span:first-child,
.about-box .about-item .content .num2 span:first-child {
  display: block;
  font-size: 24px;
  color: #fff;
  line-height: 42px;
}

.about-box .about-item .content .num1 span:last-child,
.about-box .about-item .content .num2 span:last-child {
  display: block;
  color: #fff;
  font-weight: bold;
}

.about-box .about-item .content .more {
  margin-top: 54px;
  text-align:left;
}

.about-box .about-item .content .more a {
  font-size: 18px;
  line-height: 36px;
  color: #fff;

}

.about-box .about-list .about-item:nth-of-type(1) {
  width: 27.5%;
}

.about-box .about-list .about-item:nth-of-type(2) {
  width: 27.5%;
  margin-left: -3.6%;
}

.about-box .about-list .about-item:nth-of-type(3) {
  width: 27.5%;
  overflow: hidden;
  margin-left: -3.5%;
}

.about-box .about-list .about-item .pic {
  height: 100%;
  transform: skew(-18deg);
  overflow: hidden;
}

.about-box .about-list .about-item:nth-of-type(1) .pic {
  transform-origin: right top;
}

.about-box .about-list .about-item:nth-of-type(3) .pic {
  transform-origin: left bottom;
}

.about-box .about-list .about-item .pic .img1 {
  width: 171%;
  height: 100%;
  object-fit: cover;
transform: skewX(18deg);
margin-left: -98px;
}


.about-box .about-list .about-item .about-content {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translateX(-50%);
}

.about-box .about-list .about-item:nth-child(3) .about-content {
  transform: translateX(0);
}

.about-box .about-list .about-item.selected {
  width: 52%;
  transition: all 0.3s ease;
  -moz-transition: all 0.3s ease;
  -webkit-transition: all 0.3s ease;
  -o-transition: all 0.3s ease;
  -ms-transition: all 0.3s ease;
}

.about-box .about-list .about-item.selected .content {
  display: block;
}

.about-box .about-list .about-item.selected .about-content {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 732px;
  width: 75%;
}

.about-box .about-list .about-item:nth-child(3).selected .about-content {
  transform: translate(-42%, -39%);

}



/* 新闻动态 */
.news {
  padding-bottom: 102px;
}

.news .news-box {
  width: 100%;
  height: 548px;
}

.news .news-box .news-left {
  float: left;
  width: 844px;
  width: 54.45%;
  height: 543px;
}

.news .news-box .news-left .swiper-container {
  height: 543px;
}

.news .news-box .news-left .swiper-container .swiper-wrapper {
  height: 100%;
}

.news .news-box .news-left .swiper-container .swiper-wrapper .swiper-slide {
  position: relative;
  height: 100%;
}

.news .news-box .news-left .swiper-container .swiper-wrapper .swiper-slide .pic-content {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.news .news-box .news-left .swiper-container .swiper-wrapper .swiper-slide .pic-content .pic1 {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.5s ease;
}

.news .news-box .news-left .swiper-container .swiper-wrapper .swiper-slide .pic-content .pic1:hover {
  transform: scale(1.1);
  transition: all 0.5s ease;
}

.news .news-box .news-left .swiper-container .swiper-wrapper .swiper-slide .text-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  line-height: 80px;
  box-sizing: border-box;
  background-color: #003f88;
  padding: 0 20px;
  opacity: 0.84;
}

.news .news-box .news-left .swiper-container .swiper-wrapper .swiper-slide .text-content h3 {
  font-size: 20px;
  /* line-height: 35px; */
  color: #fff;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  overflow: hidden;
  padding-right: 160px;
}

.news .news-box .news-left .swiper-container .swiper-pagination {
  text-align: right;
  padding-right: 10px;
  box-sizing: border-box;
  bottom: 30px;
}

.news .news-box .news-left .swiper-container .swiper-pagination .swiper-pagination-bullet {
  width: 9px;
  height: 9px;
  opacity: 1;
  border: 1px solid #fff;
  background-color: transparent;

}

.news .news-box .news-left .swiper-container .swiper-pagination .swiper-pagination-bullet-active {
  background-color: #fff;
}

.news-right {
  float: left;
  width: 45.55%;
  height: 543px;
  background-color: #fafafa;
}

.news-list {
  padding: 0px 24px 0px 25px;
}

.news-list .list-item {
  width: 100%;
  height: 58px;
  border-bottom: 1px solid #d8d9db;
  box-sizing: border-box;
  transition: all 0.25s ease-in-out;
}

.news-list .list-item a {
  display: block;
}

.news-list .list-item .content {
  position: relative;
}

.news-list .list-item .content .info {
  /* float: left; */
  height: 62px;
  padding-left: 20px;
  padding-right: 100px;
  background: url(../images/cricle.png) no-repeat left center;
}

.news-list .list-item .content .time {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 16px;
  color: #999;
}

.news-list .list-item .content .info p {
  color: #333333;
  font-size: 18px;
  line-height: 62px;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 1;
  overflow: hidden;
}

.news-list .list-item:hover {
  padding-left:10px;
}
.news-list .list-item:hover .content .info p {
  color:#003f88;
}


/* 科学研究 */
.research {
  padding-bottom: 148px;
  background: url(../images/research-bg.png) no-repeat center center / cover;
}

.research .research-box .research-item {
  position: relative;
  float: left;
  width: 22.16%;
  height: 558px;
  transition: all 0.3s ease;
  -moz-transition: all 0.3s ease;
  -webkit-transition: all 0.3s ease;
  -o-transition: all 0.3s ease;
  -ms-transition: all 0.3s ease;
}
.research .research-box .research-item:nth-child(1){
  background: url(../images/research-bg1.png) no-repeat center center / cover;
}
.research .research-box .research-item:nth-child(2){
  background: url(../images/research-bg2.png) no-repeat center center / cover;
}
.research .research-box .research-item:nth-child(3){
  background: url(../images/research-bg3.png) no-repeat center center / cover;
}
.research .research-box .research-item:nth-child(4){
  background: url(../images/research-bg4.png) no-repeat center center / cover;
}
.research .research-box .research-item h3 {
  writing-mode: tb;
  font-size: 30px;
  font-weight: bold;
  color: #fff;
  position: absolute;
  top: 191px;
  left: 50%;
  transform: translateX(-50%);
}

.research .research-box .research-item .dec {
  display: none;
  font-size: 22px;
  color: #fff;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  -moz-text-overflow: ellipsis;
  -webkit-text-overflow: ellipsis;
  -o-text-overflow: ellipsis;
  -ms-text-overflow: ellipsis;
}

.research .research-box .research-item.selected {
  width: 54.52%;
  transition: all 0.3s ease;
  -moz-transition: all 0.3s ease;
  -webkit-transition: all 0.3s ease;
  -o-transition: all 0.3s ease;
  -ms-transition: all 0.3s ease;
}

.research .research-box .research-item.selected .content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 177px;
  padding: 50px 42px 42px 42px;
  background-image: linear-gradient(to top, #000000, transparent);
  opacity: 0.8;
  box-sizing: border-box;
}

.research .research-box .research-item.selected .dec {
  display: block;
}

.research .research-box .research-item.selected h3 {
  writing-mode: unset;
  position: unset;
  transform: unset;
  margin-bottom: 20px;
}

/* 核心团队 */
.mobile-group-box {
  display: none;
}

.group {
  background: url(../images/group-bg.png) no-repeat center bottom /cover;
}

.group-box {
  height: 498px;
  padding-bottom: 80px;

}
.group-box>div{
  height:100%;
}

.group-box .swiper-container {
  height: 100%;
}

.group-box .swiper-container .swiper-wrapper {

  height: 100%;
}

.group-box .swiper-container .swiper-wrapper .swiper-slide {
  height: 100%;
  transition: all 0.3s ease;
  -moz-transition: all 0.3s ease;
  -webkit-transition: all 0.3s ease;
  -o-transition: all 0.3s ease;
  -ms-transition: all 0.3s ease;
}

.group-box .swiper-container .swiper-wrapper .swiper-slide .pic {
  position: relative;
  height: 488px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);

}

.group-box .swiper-container .swiper-wrapper .swiper-slide .pic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.group-box .swiper-container .content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 179px;
  background: url(../images/group-content-bg.png) no-repeat center bottom /cover;
  text-align: center;
}

.group-box .swiper-container .content .zhiwei1 {
  font-size: 22px;
  color: #333;
  margin-top: 70px;
  line-height: 50px;
}

.group-box .swiper-container .content .zhiwei2 {
  font-size: 20px;
  color: #999999;
}

.group-box .swiper-container .swiper-slide:hover {
  transition: all 0.3s ease;
  -moz-transition: all 0.3s ease;
  -webkit-transition: all 0.3s ease;
  -o-transition: all 0.3s ease;
  -ms-transition: all 0.3s ease;
}

.group-box .swiper-container .swiper-slide:hover .content {
  background: url(../images/group-content-bg-hover.png) no-repeat center bottom;
}

.group-box .swiper-container .swiper-slide:hover .content .zhiwei1,
.group-box .swiper-container .swiper-slide:hover .content .zhiwei2 {
  color: #fff;
}

/* 视频 */
.video {
  width: 100%;
  height: 400px;
}

.video .pic {
  position: relative;
  width: 100%;
  height: 100%;
}

.video .pic .img {
  width: 100%;
  height:100%;
  object-fit: cover;
}

.video .pic video {
  position: absolute;
  left: 0;
  top: 0;
  display: none;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video .pic .content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.video .pic .content p {
  font-size: 18px;
  color: #fff;
  margin-top: 25px;
}

@media screen and (max-width:1600px) {


  .title-box .title h3 {
    font-size: 36px;
  }

  .title-box {
    padding: 60px 0 45px 0;
    text-align: center;
  }

  .about-box .about-item .content {
    padding-left: 180px;
  }

  .about-box .about-item .content .num1 {
    margin-right: 91px;
  }

  .about-box .about-item h3 {
    font-size: 32px;
  }

  .about-box .about-item .content .num1 span:first-child,
  .about-box .about-item .content .num2 span:first-child {
    font-size: 22px;
  }

  .research .research-box .research-item h3 {
    font-size: 28px;
  }
}

@media screen and (max-width:1500px) {
  .about-box {
    height: 500px;
  }

  .about-box .position1 {
    width: 100px;
    height: 320px;
  }

  .about-box .position2 {
    width: 105px;
    height: 330px;
  }

  .about-box .about-item .content .num {
    margin-top: 50px;
  }

  .about-box .about-item .content .num1 {
    margin-right: 60px;
  }

  .about-box .about-list .about-item.selected .about-content {
    width: 70%;
  }

  .research .research-box .research-item {
    height: 500px;
  }
}

@media screen and (max-width:1400px) {




  .title-box {
    padding: 50px 0 35px 0;
    text-align: center;
  }

  .title-box .title h3 {
    font-size: 34px;
  }

  .title-box .title h3::after {
    margin: 15px auto;
  }

  .about-box .about-item .content .num1 {
    float: none;
  }

  .about-box .about-item .content .num {
    margin-top: 0;
  }

  .about-box .about-item .content .num1,
  .about-box .about-item .content .num2 {
    margin-top: 25px;
  }

  .about-box .about-item .content .more {
    margin-top: 30px;
  }

  .about-box .about-list .about-item .about-content {
    top: 19%;
  }

  .about-box .about-list .about-item.selected .about-content {
    transform: translate(-50%, -47%);
  }

  .about-box .about-item h3 {
    font-size: 28px;
  }

  .about-box .about-list .about-item:nth-child(3).selected .about-content {
    transform: translate(-42%, -46%);
  }

  .about-box .about-item .content {
    padding-left: 160px;
  }

  .about-box .about-item .content .dec {
    font-size: 18px;
  }

  .about-box .about-item .content .num1,
  .about-box .about-item .content .num2 {
    height: 70px;
  }

  .about-box .about-item .content .num1 span:first-child,
  .about-box .about-item .content .num2 span:first-child {
    font-size: 20px;
  }

  .news {
    padding-bottom: 80px;
  }

  .news .news-box {
    height: 460px;
  }
.news .news-box .news-left {
height: 460px;
}
.news .news-box .news-left .swiper-container {
height: 460px;
}
.news-right {
height: 460px;
}

  .news-list .list-item,
  .news-list .list-item .content .info {
    height: 52px;
  }

  .news-list .list-item .content .info p {
    font-size: 16px;
    line-height: 52px;
  }

  .news .news-box .news-left .swiper-container .swiper-wrapper .swiper-slide .text-content h3 {
    font-size: 18px;
  }

  .research {
    padding-bottom: 100px;
  }

  .research .research-box .research-item h3 {
    font-size: 26px;
  }

  .research .research-box .research-item .dec {
    font-size: 20px;
  }

  .group-box {
    height: 450px;
  }

  .group-box .swiper-container .swiper-wrapper .swiper-slide .pic {
    height: 440px;
  }

  .group-box .swiper-container .content .zhiwei1 {
    font-size: 20px;
  }

  .group-box .swiper-container .content .zhiwei2 {
    font-size: 18px;
  }
}

@media screen and (max-width:1300px) {


  .about-box {
    height: 460px;
  }

  .research .research-box .research-item {
    height: 460px;
  }

  .about-box .about-list .about-item.selected .about-content {
    transform: translate(-50%, -44%);
  }

  .about-box .about-list .about-item:nth-child(3).selected .about-content {
    transform: translate(-42%, -44%);
  }

  .about-box .about-item h3 {
    font-size: 26px;
  }

  .about-box .about-item .content {
    padding-left: 140px;
  }

  .about-box .about-list .about-item .about-content {
    transform: translateX(-30%);
  }
}

@media screen and (max-width:1200px) {


  .group-box {
    height: 480px;
  }

  .group-box .swiper-container .swiper-wrapper .swiper-slide .pic {
    height: 470px;
  }

  .about-box .about-list .about-item:nth-of-type(1) {
    width: 28%;
  }

  .about-box .about-list .about-item:nth-of-type(2) {
    width: 28%;
    margin-left: -4.2%;
  }

  .about-box .about-list .about-item:nth-of-type(3) {
    width: 28%;
    margin-left: -4%;
  }

  .about-box .about-list .about-item.selected {
    width: 52%;
  }

  .about-box .about-list .about-item:nth-child(3).selected .about-content {
    transform: translate(-35%, -44%);
  }

  .video .pic .content .play {
    width: 70px;
    height: 70px;
  }
}

@media screen and (max-width:1100px) {
  .title-box .title h3 {
    font-size: 30px;
  }

  .about-box {
    height: 410px;
  }

  .about-box .about-item .content .num1,
  .about-box .about-item .content .num2 {
    margin-top: 15px;
  }

  .about-box .about-item .content .more {
    margin-top: 15px;
  }

  .news .news-box {
    height: 410px;
  }

  .news-list .list-item,
  .news-list .list-item .content .info {
    height: 46px;
  }

  .news-list .list-item .content .info p {
    line-height: 46px;
  }

  .research .research-box .research-item {
    height: 410px;
  }

  .research .research-box .research-item h3 {
    top: 120px;
    font-size: 24px;
  }

  .research .research-box .research-item .dec {
    font-size: 18px;
  }

  .banner .swiper-container .swiper-slide h3 {
    font-size: 26px;
    line-height: 50px;
  }

  .banner .swiper-container .swiper-pagination {
    bottom: 40px;
  }




}

@media screen and (max-width:1000px) {

  .banner .swiper-container .swiper-pagination-bullet {
    width: 70px;
    margin: 0 10px;
  }

  .banner .swiper-container .swiper-pagination-bullet-active {
    width: 160px;
  }

  .about-box {
    height: auto;
  }

  .about-box .position1,
  .about-box .position2 {
    display: none;
  }

  .about-box .about-list .about-item .pic {
    height: 100%;
    transform: skew(0);
  }

  .about-box .about-list .about-item {
    width: 100% !important;
    margin-left: 0 !important;
  }

  .about-box .about-list .about-item.selected .about-content {
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;

  }

  .about-box .about-item .content .num1,
  .about-box .about-item .content .num2 {
    margin-top: 15px;
    float: left;
  }

  .about-box .about-list .about-item.selected {
    height: 450px;
  }

  .news .news-box {
    height: auto;
  }

  .news .news-box .news-left {
    width: 100%;
height: 100%;
    margin-bottom: 20px;
  }
.news .news-box .news-left .swiper-container .swiper-wrapper .swiper-slide .pic-content .pic1 {

    object-fit: cover;
}
  .news-right {
    width: 100%;
height: 100%;
  }

  .news-list {
    padding: 0;

  }

  .news-list .list-item .content .info {
    background: url(../images/cricle.png) no-repeat 10px center;
    padding-left: 30px;
    padding-right: 120px;
  }

  .news-list .list-item .content .time {
    right: 10px;
  }

  .research .research-box .research-item.selected {
    width: 100%;
  }

  .group-box {
    height: 440px;
  }

  .group-box .swiper-container .swiper-wrapper .swiper-slide .pic {
    height: 430px;
  }

  .group-box .swiper-container .content {
    height: 150px;
    background: url(../images/group-content-bg.png) no-repeat center top;

  }

  .group-box .swiper-container .content .zhiwei1 {
    margin-top: 50px;
  }
}

@media screen and (max-width:850px) {
  .banner .swiper-container .swiper-slide h3 {
    font-size: 22px;
    line-height: 40px;
  }



  .title-box .title h3 {
    font-size: 26px;
  }

  .title-box .title .keyword {
    font-size: 16px;
  }

  .about-box .about-item h3,
  .research .research-box .research-item h3 {
    font-size: 22px;
  }

  .about-box .about-item .content .dec {
    font-size: 16px;
    line-height: 2;
  }

  .about-box .about-item .content .num1 span:first-child,
  .about-box .about-item .content .num2 span:first-child {
    font-size: 18px;
  }

  .about-box .about-item .content .more a,
  .research .research-box .research-item .dec {
    font-size: 16px;
  }

  .about-box .about-item .content .more img {
    width: 18px;
    height: 18px;
  }

  .research .research-box .research-item.selected .content {
    height: 140px;
    padding: 35px 30px 30px 30px
  }

  .research .research-box .research-item.selected h3 {
    margin-bottom: 10px;
  }

  .group-box {
    height: 400px;
  }

  .group-box .swiper-container .swiper-wrapper .swiper-slide .pic {
    height: 390px;
  }

}

@media screen and (max-width:850px) {
  .group-box {
    height: 430px;
  }

  .group-box .swiper-container .swiper-wrapper .swiper-slide .pic {
    height: 420px;
  }
  .video{
    height: 300px;
  }

}

@media screen and (max-width:650px) {
  .banner .swiper-container .swiper-slide h3 {
    font-size: 20px;
    line-height: 35px;
  }
.banner .swiper-container .swiper-slide .layout {
padding: 0;
}


  .banner .swiper-container .swiper-pagination-bullet {
    width: 50px;
    margin: 0 5px;
  }

  .banner .swiper-container .swiper-pagination-bullet-active {
    width: 120px;
  }

  .title-box {
    padding: 35px 0 25px 0;
    text-align: center;
  }

  .title-box .title h3 {
    font-size: 22px;
  }

  .title-box .title h3::after {
    width: 60px;
    height: 5px;
    margin: 10px auto;
  }

  .about-box .about-item .content {
    padding-left: 120px;
  }

  .about-box .about-item h3,
  .research .research-box .research-item h3 {
    font-size: 20px;
  }

  .about-box .about-item .content .dec {
    margin-top: -5px;
  }

  .group-box .swiper-container .content .zhiwei1 {
    font-size: 18px;
  }

  .group-box .swiper-container .content .zhiwei2 {
    font-size: 16px;
  }

  .video .pic .content .play {
    width: 60px;
    height: 60px;
  }

  .video .pic .content p {
    font-size: 16px;
  }
}

@media screen and (max-width:600px) {
.banner .swiper-button-prev,.banner .swiper-button-next {
display: none;
}
.banner .swiper-container .swiper-slide .layout {
bottom: 54px;
width: 95%;
}
  .about-box .about-item h3 {
    float: none;
    margin-bottom: 20px;
  }

  .about-box .about-item .content {
    padding-left: 0;
  }

  .research .research-box .research-item {
    height: 360px;
  }

  .research .research-box .research-item.selected .content {
    height: 120px;
  }
  .about-box .about-list .about-item.selected{
    height: 350px;
  }
  .news,.group-box{
    padding-bottom: 50px;
  }
  .research{
    padding-bottom: 60px;
  }
 
}

@media screen and (max-width:550px) {
  .group-box {
    height: 380px;
  }
.banner .swiper-container .swiper-slide h3 {
font-size: 12px;
}
  .group-box .swiper-container .swiper-wrapper .swiper-slide .pic {
    height: 370px;
  }


}

@media screen and (max-width:500px) {
  .title-box .title h3 {
    font-size: 20px;
  }

  .title-box .title .keyword  {
    font-size: 14px;
  }

  .banner .swiper-container .swiper-slide a {
    font-size: 14px;
  }

  .banner .swiper-container .swiper-pagination-bullet-active {
    width: 100px;
  }

  .news .news-box .news-left .swiper-container .swiper-wrapper .swiper-slide .text-content {
    height: 50px;
    line-height: 50px;

  }

  .news .news-box .news-left .swiper-container .swiper-pagination {
    bottom: 13px;
  }

  .video .pic .content .play {
    width: 60px;
    height: 60px;
  }

  .research .research-box .research-item {
    height: 300px;
  }

  .about-box .about-item h3,
  .research .research-box .research-item h3 {
    font-size: 18px;
  }

  .about-box .about-item .content .num1 span:first-child,
  .about-box .about-item .content .num2 span:first-child,
  .news .news-box .news-left .swiper-container .swiper-wrapper .swiper-slide .text-content h3 {
    font-size: 16px;
  }

  .about-box .about-item .content .dec,
  .about-box .about-item .content .more a,
  .research .research-box .research-item .dec,.news-list .list-item .content .time {
    font-size: 14px;
  }
  .news-list .list-item .content .info{
    padding-right: 100px;
  }

  .research .research-box .research-item.selected .content {
    padding: 35px 20px 30px 20px;
  }
  .news-list .list-item .content .info p{
    font-size: 14px;
  }
  .video{
    height: 250px;
  }
  .about-box .about-list .about-item.selected .about-content {
    width: 80%;
}
}

@media screen and (max-width:480px) {
  .pc-group-box {
    display: none;
  }

  .mobile-group-box {
    display: block;
    height: auto;
  }

  .mobile-group-box .swiper-container .swiper-wrapper {
    display: block;

  }

  .mobile-group-box .swiper-container .swiper-wrapper .swiper-slide .pic {
    height: auto;
  }

  .mobile-group-box .swiper-container .content {
    height: 180px;
    background-size: cover;
  }

  .mobile-group-box .swiper-container .content .zhiwei1 {
    margin-top: 70px;
  }

  .mobile-group-box .swiper-container .swiper-wrapper .swiper-slide {
    margin-bottom: 30px;
    padding: 0 10px;
    box-sizing: border-box;
  }

  .mobile-group-box .swiper-container .swiper-wrapper .swiper-slide:last-child {
    margin-bottom: 10px;
  }
}

@media screen and (max-width:450px) {
  .research .research-box .research-item {
    height: 260px;
  }
}

@media screen and (max-width:400px) {
  .mobile-group-box .swiper-container .content {
    height: 150px;
    background-size: cover;
  }

  .mobile-group-box .swiper-container .content .zhiwei1 {
    margin-top: 50px;
  }
}