@media only screen and (max-width: 479px) {
  body {
    min-width: auto;
    width: 100%;
    overflow-x: hidden;
  }
  .page_top {
    height: 50px;
    border-bottom: 1px solid #ccc;
  }
  .page_top .top_cont {
    position: relative;
    width: 100%;
    height: 50px;
    padding: 0 8px;
  }
  .page_top .top_cont .nav_cont {
    position: absolute;
    top: 50px;
    left: 0;
    z-index: 99;
    width: 100%;
    display: none;
  }
  .page_top .top_cont .nav_wrap {
    flex-direction: column;
    width: 100%;
    height: calc(100vh - 50px);
    background-color: rgba(0, 0, 0, 0.6);
  }
  .page_top .top_cont .nav_wrap .nav_list {
    width: 100%;
    height: 40px;
    margin: 0;
    border-radius: 0;
    box-sizing: border-box;
    text-align: center;
    border-top: 1px solid #dadada;
    background-color: #fff;
  }
  .page_top .top_cont .literature {
    height: 30px;
    padding: 0 8px;
  }
  .page_top .top_cont .literature .icon {
    width: 12px;
    height: 12px;
  }
  .page_top .top_cont .literature .txt {
    font-size: 12px;
  }
  .page_top .top_cont .nav_menu {
    display: block;
    width: 30px;
    height: 30px;
    position: absolute;
    right: 0;
  }
  .page_top .top_cont .nav_menu img {
    width: 30px;
    height: 30px;
  }
  .home_wrap {
    flex-direction: column-reverse;
    padding: 20px 12px;
    box-sizing: border-box;
  }
  .home_wrap .home_left {
    width: 100%;
    padding: 16px 0 0;
  }
  .home_wrap .home_left .title {
    font-size: 28px;
    line-height: 36px;
  }
  .home_wrap .home_left .tag {
    font-size: 12px;
    line-height: 20px;
    margin-top: 8px;
    white-space: nowrap;
  }
  .home_wrap .home_left .desc {
    font-size: 14px;
    line-height: 20px;
    margin-top: 10px;
  }
  .home_wrap .home_left .label_wrap {
    margin-top: 0;
    flex-wrap: wrap;
  }
  .home_wrap .home_left .label_wrap .label {
    margin-right: 8px;
    padding-right: 4px;
    margin-top: 12px;
  }
  .home_wrap .home_left .label_wrap .label .label_dot {
    margin-right: 4px;
  }
  .home_wrap .home_left .label_wrap .label .label_dot .txt {
    font-size: 11px;
    white-space: nowrap;
  }
  .home_wrap .home_left .label_wrap .label .str {
    white-space: nowrap;
    font-size: 10px;
  }
  .home_wrap .home_left .label_wrap .label:nth-child(2n) {
    margin-right: 0;
  }
  .home_wrap .home_left .icon_wrap {
    margin-top: 12px;
  }
  .home_wrap .home_left .icon_wrap .icon {
    width: 24px;
    height: 24px;
    margin-right: 12px;
  }
  .home_wrap .home_left .icon_wrap .icon img {
    width: 24px;
    height: 24px;
  }
  .home_wrap .home_right {
    width: 100%;
  }
  .home_wrap .home_right img {
    width: 100%;
  }
  .resume_wrap {
    width: 100%;
    margin: 16px 0;
    padding: 0 12px;
    box-sizing: border-box;
  }
  .resume_wrap .tag {
    font-size: 20px;
    line-height: 24px;
  }
  .research_wrap {
    width: 100%;
    margin: 16px 0;
    padding: 0 12px;
    box-sizing: border-box;
  }
  .research_wrap .tag {
    font-size: 20px;
    line-height: 24px;
  }
  .research_wrap .option_wrap {
    flex-direction: column;
    margin-top: 16px;
  }
  .research_wrap .option_wrap .left .title {
    font-size: 16px;
    line-height: 20px;
  }
  .research_wrap .option_wrap .right {
    margin-top: 10px;
  }
  .research_wrap .card_wrap {
    margin-top: 14px;
  }
  .research_wrap .card_wrap li {
    margin-top: 12px;
  }
  .research_wrap .card_wrap .card {
    padding: 12px;
  }
  .research_wrap .card_wrap .card .top {
    flex-direction: column-reverse;
  }
  .research_wrap .card_wrap .card .top .text_cont .title {
    line-height: 20px;
  }
  .research_wrap .card_wrap .card .top .text_cont .desc {
    font-size: 12px;
    margin-top: 6px;
  }
  .research_wrap .card_wrap .card .top .text_img {
    width: 100%;
    height: auto;
    margin: 0;
    margin-bottom: 12px;
  }
  .research_wrap .card_wrap .card .top .text_img img {
    width: 100%;
    height: auto;
  }
  .research_wrap .card_wrap .card .img_wrap {
    flex-wrap: wrap;
    margin-top: 0;
  }
  .research_wrap .card_wrap .card .img_wrap .img {
    width: 47%;
    height: auto;
    margin-top: 12px;
    margin-right: 6%;
  }
  .research_wrap .card_wrap .card .img_wrap .img:nth-child(2n) {
    margin-right: 0;
  }
  .teaching_wrap {
    width: 100%;
    margin: 16px 0;
    padding: 0 12px;
    box-sizing: border-box;
  }
  .teaching_wrap .tag {
    font-size: 20px;
    line-height: 24px;
  }
  .teaching_wrap .tab_content .tags {
    margin-top: 16px;
    font-size: 16px;
    line-height: 20px;
  }
  .teaching_wrap .tab_content .course_tab_wrap {
    margin-top: 10px;
  }
  .teaching_wrap .iframe {
    margin-top: 16px;
  }
  .teaching_wrap .card_wrap {
    margin-top: 14px;
  }
  .teaching_wrap .card_wrap li {
    margin-top: 12px;
  }
  .teaching_wrap .card_wrap .card {
    padding: 12px;
  }
  .teaching_wrap .card_wrap .card .top {
    flex-direction: column-reverse;
  }
  .teaching_wrap .card_wrap .card .top .text_cont .title {
    line-height: 20px;
  }
  .teaching_wrap .card_wrap .card .top .text_cont .desc {
    font-size: 12px;
    margin-top: 6px;
  }
  .teaching_wrap .card_wrap .card .top .text_img {
    width: 100%;
    height: auto;
    margin: 0;
    margin-bottom: 12px;
  }
  .teaching_wrap .card_wrap .card .top .text_img img {
    width: 100%;
    height: auto;
  }
  .teaching_wrap .card_wrap .card .img_wrap {
    flex-wrap: wrap;
    margin-top: 0;
  }
  .teaching_wrap .card_wrap .card .img_wrap .img {
    width: 47%;
    height: auto;
    margin-top: 12px;
    margin-right: 6%;
  }
  .teaching_wrap .card_wrap .card .img_wrap .img:nth-child(2n) {
    margin-right: 0;
  }
  .service_wrap {
    width: 100%;
    margin: 16px 0;
    padding: 0 12px;
    box-sizing: border-box;
  }
  .service_wrap .tag {
    font-size: 20px;
    line-height: 24px;
  }
  .service_wrap .card_wrap {
    margin-top: 0;
    flex-wrap: unset;
    flex-direction: column;
  }
  .service_wrap .card_wrap li {
    margin-right: 0;
  }
  .service_wrap .card_wrap .card {
    width: 100%;
    margin-top: 16px;
  }
  .service_wrap .card_wrap .card .img {
    width: 100%;
    height: auto;
  }
  .service_wrap .card_wrap .card .date {
    font-size: 12px;
    line-height: 16px;
    margin-top: 10px;
  }
  .service_wrap .card_wrap .card .title {
    font-size: 16px;
    line-height: 20px;
  }
  .service_wrap .card_wrap .card .desc {
    font-size: 12px;
    line-height: 16px;
  }
  .tab_wrap {
    margin-top: 12px;
  }
  .tab_wrap .tab_list {
    font-size: 12px;
    white-space: nowrap;
    margin-right: 8px;
  }
  .course_tab_wrap {
    margin-top: 12px;
  }
  .page_wrap {
    margin-top: 32px;
    padding: 12px;
    box-sizing: border-box;
  }
  .page_wrap .page_cont {
    height: auto;
  }
  .page_wrap .page_cont .page_list {
    width: 24px;
    height: 24px;
  }
  .page_wrap .handle {
    font-size: 12px;
  }
  .page_wrap .handle .icon {
    width: 16px;
    height: 16px;
  }
  .page_wrap .handle .prev {
    margin-right: 3px;
  }
  .page_wrap .handle .next {
    margin-left: 3px;
  }
}