.index_title {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.index_title span {
  font-weight: bold;
}
.index_title a {
  color: #909090;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}
.index_title a::after {
  content: "";
  display: block;
  width: 5px;
  height: 5px;
  background-color: transparent;
  border-right: 1px solid #909090;
  border-top: 1px solid #909090;
  -ms-transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  margin-left: 8px;
}
.index_title a:hover {
  color: #1F3997;
}
.index_title a:hover::after {
  border-color: #1F3997;
}

.science .flx {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.science .flx > div {
  width: calc((100% - 80px) / 2);
}
.science .l_img {
  position: relative;
  height: 0;
  padding-bottom: 56%;
  overflow: hidden;
  display: block;
  -webkit-transition: 0.5s;
  transition: 0.5s;
}
.science .l_img img {
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  -o-object-fit: cover;
     object-fit: cover;
}
.science .l_img:hover img {
  -webkit-transform: scale(1.05);
      -ms-transform: scale(1.05);
          transform: scale(1.05);
}
.science .top {
  position: relative;
}
.science .point {
  position: absolute;
  z-index: 2;
  width: 100%;
  left: 0;
  bottom: 20px;
}
.science .event_more {
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  font-weight: bold;
  margin-top: 10px;
  height: 3em;
}
.science .event_more a:hover {
  color: #1F3997;
}
.science .tag {
  color: #f06330;
}
.science .r {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.science .r > div {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.science .r_line {
  height: 1px;
  background: rgba(0, 0, 0, 0.1);
  margin: 20px 0;
}
.science .r_img {
  position: relative;
  height: 0;
  padding-bottom: 56%;
  overflow: hidden;
  display: block;
  -webkit-transition: 0.5s;
  transition: 0.5s;
  overflow: hidden;
}
.science .r_img img {
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  -o-object-fit: cover;
     object-fit: cover;
}
.science .r_img:hover img {
  -webkit-transform: scale(1.05);
      -ms-transform: scale(1.05);
          transform: scale(1.05);
}
.science .r_tit {
  margin-top: 15px;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.science .r_tit a {
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  font-weight: bold;
}
.science .r_tit a:hover {
  color: #1F3997;
}
.science .r_l {
  width: 250px;
}
.science .r_txt {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  width: calc(100% - 280px);
}
.science .r_txt .tag {
  line-height: 1;
  color: #737373;
}

.cooperation .list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}
.cooperation .list > div {
  width: calc((100% - 60px) / 3);
  margin-right: 30px;
}
.cooperation .list > div:last-child {
  margin-right: 0;
}
.cooperation .img {
  position: relative;
  height: 0;
  padding-bottom: 56%;
  overflow: hidden;
  display: block;
  -webkit-transition: 0.5s;
  transition: 0.5s;
}
.cooperation .img img {
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  -o-object-fit: cover;
     object-fit: cover;
}
.cooperation .img:hover img {
  -webkit-transform: scale(1.05);
      -ms-transform: scale(1.05);
          transform: scale(1.05);
}
.cooperation .txt {
  border: 1px solid #e5e5e5;
  border-top: none;
  padding: 30px 40px;
  height: 200px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.cooperation .tit {
  font-weight: bold;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.cooperation .tit a {
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
}
.cooperation .tit a:hover {
  color: #1F3997;
}

.scientific_research {
  background-size: cover;
  background-position: center;
}
.scientific_research .title {
  text-align: center;
  line-height: 1;
  color: #fff;
  font-weight: bold;
}
.scientific_research .flx {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: center;
}
.scientific_research .flx a {
    margin: 0 15px;
  width: calc((100% - 90px) / 4);
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  background: rgba(255, 255, 255, 0.9);
}
.scientific_research .flx a:hover {
  background: rgb(255, 255, 255);
  -webkit-box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
          box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  color: #1F3997;
}
.scientific_research .flx a:hover .ic img {
  -webkit-transform: scale(1.05);
      -ms-transform: scale(1.05);
          transform: scale(1.05);
}
.scientific_research .ic {
  height: 80px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}
.scientific_research .ic img {
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
}
.scientific_research .tit {
  font-weight: bold;
  line-height: 1;
}

.teaching {
  background-image: url(/static/cn/img/teaching_bg.jpg);
  background-size: cover;
  background-position: bottom;
}
.teaching .title {
  text-align: center;
  line-height: 1;
  font-weight: bold;
}
.teaching .flx {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
}
.teaching .flx > div {
  width: 46.5%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.teaching .flx > div:nth-child(n+3){
    margin-top: 80px;
}
.teaching .img {
  width: 262px;
}
.teaching .img a {
  position: relative;
  height: 0;
  padding-bottom: 62.5%;
  overflow: hidden;
  display: block;
  -webkit-transition: 0.5s;
  transition: 0.5s;
}
.teaching .img a img {
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  -o-object-fit: cover;
     object-fit: cover;
}
.teaching .img a:hover img {
  -webkit-transform: scale(1.05);
      -ms-transform: scale(1.05);
          transform: scale(1.05);
}
.teaching .tit{
    overflow: hidden;
text-overflow: ellipsis;
display: -webkit-box;
-webkit-line-clamp: 1;
-webkit-box-orient: vertical;
}
.teaching .tit a{
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  font-weight: bold;
}
.teaching .tit a:hover{
  color: #1F3997;
}
.teaching .des {
  margin-top: 5px;
  color: #777777;
  line-height: 1.875;
  overflow: hidden;
text-overflow: ellipsis;
display: -webkit-box;
-webkit-line-clamp: 2;
-webkit-box-orient: vertical;
}
.teaching .teaching_more {
  color: #909090;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}
.teaching .teaching_more::after {
  content: "";
  display: block;
  width: 5px;
  height: 5px;
  background-color: transparent;
  border-right: 1px solid #909090;
  border-top: 1px solid #909090;
  -ms-transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
  transform: rotate(45deg);
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  margin-left: 8px;
}
.teaching .teaching_more:hover {
  color: #1F3997;
}
.teaching .teaching_more:hover::after {
  border-color: #1F3997;
}
.teaching .txt {
  width: calc(100% - 302px);
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
@media screen and (max-width: 1700px) {
    .science .flx > div {
    width: calc((100% - 40px) / 2);
    }
    .teaching .flx > div:nth-child(n+3) {
    margin-top: 50px;
    }
    .teaching .txt {
    width: calc(100% - 290px);
        
    }
    .scientific_research .ic{
        height: 60px;
    }
    .scientific_research .ic img{
        max-height: 100%;
    }
}
@media screen and (max-width: 1200px){
        .science .flx > div {
        width: calc((100% - 30px) / 2);
    }
    .science .r > .r_line {
        margin: 15px 0;
    }
    .teaching .img {
    width: 190px;
    }
        .teaching .txt {
        width: calc(100% - 215px);
    }
        .teaching .flx > div:nth-child(n+3) {
        margin-top: 30px;
    }
    .science .r_l {
    width: 210px;
    }
    .science .r_txt{
            width: calc(100% - 235px);
    }
}
@media screen and (max-width: 768px){
    .science .flx{
        display: block;
    }
    .science .flx > div{
        width: 100%;
    }
    .science .flx .r{
        margin-top: 5vw;
    }
    .science .flx .l .time{
        margin-top: 20px;
    }
    .science .r_tit {
    margin-top: 10px;
        
    }
    .science .event_more{
        height: auto;
        margin-top: 5px;
    }
    .scientific_research .flx{
        flex-direction: column;
    }
    .scientific_research .flx a{
        width: 100%;
        margin: 0;
    }
    .scientific_research .flx a:nth-child(n+2){
        margin-top: 15px;
    }
        .scientific_research .ic {
        height: 40px;
    }
    .teaching .flx{
        display: block;
    }
    .teaching .flx > div{
        width: 100%;
    }
        .teaching .flx > div:nth-child(n+2) {
        margin-top: 20px;
    }
    .teaching .txt {
        width: calc(100% - 210px);
    }
}