@media screen and (max-width: 1920px) {
  html, body {
    font-size: 20px;
  }
}

@media screen and (max-width: 1872px) {
  html, body {
    font-size: 19.5px;
  }
}

@media screen and (max-width: 1824px) {
  html, body {
    font-size: 19px;
  }
}

@media screen and (max-width: 1776px) {
  html, body {
    font-size: 18.5px;
  }
}

@media screen and (max-width: 1728px) {
  html, body {
    font-size: 18px;
  }
}

@media screen and (max-width: 1680px) {
  html, body {
    font-size: 17.5px;
  }
}

@media screen and (max-width: 1632px) {
  html, body {
    font-size: 17px;
  }
}

@media screen and (max-width: 1584px) {
  html, body {
    font-size: 16.5px;
  }
}

@media screen and (max-width: 1536px) {
  html, body {
    font-size: 16px;
  }
}

@media screen and (max-width: 1488px) {
  html, body {
    font-size: 15.5px;
  }
}

@media screen and (max-width: 1440px) {
  html, body {
    font-size: 15px;
  }
}

@media screen and (max-width: 1395px) {
  html, body {
    font-size: 14.5px;
  }
}

@media screen and (max-width: 1344px) {
  html, body {
    font-size: 14px;
  }
}

@media screen and (max-width: 1296px) {
  html, body {
    font-size: 13.5px;
  }
}

@media screen and (max-width: 1248px) {
  html, body {
    font-size: 13px;
  }
}

main .banners {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  background-image: url(../images/optical/banner_img01.png);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  font-size: 1.2rem;
}

main .banners p {
  width: 89.635%;
  font-size: 2.5em;
  font-family: Source Han Sans CN, Source Han Sans CN-Bold;
  font-weight: 700;
  text-align: left;
  color: #ffffff;
  margin: 14.35rem 0 13.55rem 0;
}

main .banners ul {
  width: 89.635%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

main .banners ul li {
  width: 19.75%;
  background: rgba(0, 0, 0, 0.6);
}

main .banners ul li:hover {
  background: #4271ee;
}

main .banners ul li a {
  width: 100%;
  padding: 1.33em 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1em;
  font-family: Source Han Sans SC, Source Han Sans SC-Bold;
  font-weight: 700;
  text-align: left;
  color: #ffffff;
}

main .banners ul li.active {
  background-color: #4271ee;
}

main .optical {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 1rem;
  padding-top: 4.07em;
  padding-bottom: 7.62em;
}

main .optical .optic_box {
  width: 89.635%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  position: relative;
}

main .optical .optic_box .optical_nav {
  display: flex;
  flex-direction: column;
  width: 21.38%;
  position: sticky;
  top: 20%;
}

main .optical .optic_box .optical_nav .optical_list {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  background: #f5f5f5;
  margin-bottom: 1px;
}

main .optical .optic_box .optical_nav .optical_list .title {
  width: 100%;
  height: 3.75em;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

main .optical .optic_box .optical_nav .optical_list .title:hover {
  cursor: pointer;
  background-color: #d6d6d6;
}

main .optical .optic_box .optical_nav .optical_list .title p {
  font-size: 1.1em;
  font-family: Source Han Sans SC, Source Han Sans SC-Bold;
  font-weight: 700;
  text-align: left;
  color: #000000;
  margin-left: 8.69%;
}

main .optical .optic_box .optical_nav .optical_list .title span {
  width: .8em;
  height: .1em;
  position: relative;
  margin-right: 10.19%;
}

main .optical .optic_box .optical_nav .optical_list .title span::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: auto;
  background-color: #000000;
  transition-duration: .5s;
}

main .optical .optic_box .optical_nav .optical_list .title span::before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: auto;
  background-color: #000000;
  transform: rotate(90deg);
  transition-duration: .5s;
}

main .optical .optic_box .optical_nav .optical_list .shrink {
  width: 100%;
  display: none;
}

main .optical .optic_box .optical_nav .optical_list .shrink ul {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: 1.42em;
}

main .optical .optic_box .optical_nav .optical_list .shrink ul li {
  width: 81.98%;
  margin-top: 1.22em;
}

main .optical .optic_box .optical_nav .optical_list .shrink ul li a {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1em;
  font-family: Source Han Sans SC, Source Han Sans SC-Bold;
  font-weight: 700;
  text-align: left;
  color: #666666;
}

main .optical .optic_box .optical_nav .optical_list .shrink ul li a div {
  width: .35em;
  height: .5em;
  background-image: url(../images/optical/fanhui_img01.png);
  background-size: 100%;
  background-position: center;
  background-repeat: no-repeat;
}

main .optical .optic_box .optical_nav .optical_list.active .title {
  background-color: #4271ee;
}

main .optical .optic_box .optical_nav .optical_list.active .title p {
  color: #FFFFFF;
}

main .optical .optic_box .optical_nav .optical_list.active .title span::after {
  background-color: #FFFFFF;
  transform: rotate(180deg);
}

main .optical .optic_box .optical_nav .optical_list.active .title span::before {
  background-color: #FFFFFF;
  transform: rotate(0deg);
}

main .optical .optic_box .optical_inner {
  width: 74.95%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

main .optical .optic_box .optical_inner .opt_tit {
  width: 100%;
  border-bottom: 2px solid #dddddd;
  padding-bottom: 2.95em;
}

main .optical .optic_box .optical_inner .opt_tit p {
  font-size: 1.6em;
  font-family: Source Han Sans CN, Source Han Sans CN-Bold;
  font-weight: 700;
  text-align: left;
  color: #4271ee;
  margin-bottom: 1.59em;
}

main .optical .optic_box .optical_inner .opt_tit div {
  width: 3.15em;
  height: .3em;
  background: #38be86;
}

main .optical .optic_box .optical_inner .opt_tit span {
  opacity: 0.78;
  font-size: 1em;
  font-family: Source Han Sans SC, Source Han Sans SC-Normal;
  font-weight: normal;
  text-align: left;
  color: #666666;
  line-height: 1.5em;
  margin-top: 1.3em;
  display: inline-block;
}

main .optical .optic_box .optical_inner .opt_list {
  margin-top: 2.2em;
  width: 100%;
}

main .optical .optic_box .optical_inner .opt_list:hover a .opt_img img {
  transform: scale(1.06);
}

main .optical .optic_box .optical_inner .opt_list:hover a .opt_li_inn::before {
  left: 0;
}

main .optical .optic_box .optical_inner .opt_list:hover a .opt_li_inn p {
  color: #365bc9;
}

main .optical .optic_box .optical_inner .opt_list:hover a .opt_li_inn .move i {
  color: #365bc9;
}

main .optical .optic_box .optical_inner .opt_list:hover a .opt_li_inn .move div {
  background-image: url(../images/optical/move_img01.png);
}

main .optical .optic_box .optical_inner .opt_list a {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

main .optical .optic_box .optical_inner .opt_list a .opt_img {
  width: 33.33%;
  height: 100%;
  overflow: hidden;
}

main .optical .optic_box .optical_inner .opt_list a .opt_img img {
  width: 100%;
  height: 100%;
  display: inline-block;
  transition-duration: 1s;
}

main .optical .optic_box .optical_inner .opt_list a .opt_li_inn {
  width: 61.7%;
  display: flex;
  flex-direction: column;
  padding-bottom: 2.6em;
  position: relative;
  overflow: hidden;
}

main .optical .optic_box .optical_inner .opt_list a .opt_li_inn::after {
  position: absolute;
  content: "";
  width: 100%;
  height: 2px;
  background-color: #dddddd;
  left: 0;
  bottom: 0;
}

main .optical .optic_box .optical_inner .opt_list a .opt_li_inn::before {
  position: absolute;
  content: "";
  width: 100%;
  height: 2px;
  background-color: #365bc9;
  left: -100%;
  bottom: 0;
  transition-duration: 1s;
  z-index: 20;
}

main .optical .optic_box .optical_inner .opt_list a .opt_li_inn p {
  font-size: 1.3em;
  font-family: Source Han Sans SC, Source Han Sans SC-Bold;
  font-weight: 700;
  text-align: left;
  color: #000000;
  margin-bottom: .85em;
}

main .optical .optic_box .optical_inner .opt_list a .opt_li_inn span {
  opacity: 0.78;
  font-size: 1em;
  font-family: Source Han Sans SC, Source Han Sans SC-Normal;
  font-weight: normal;
  text-align: left;
  color: #666666;
  line-height: 1.5em;
  width: 91.85%;
  display: inline-block;
  margin-bottom: 3.15em;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
}

main .optical .optic_box .optical_inner .opt_list a .opt_li_inn .move {
  display: flex;
  align-items: center;
}

main .optical .optic_box .optical_inner .opt_list a .opt_li_inn .move i {
  opacity: 0.78;
  font-size: 1em;
  font-family: Source Han Sans SC, Source Han Sans SC-Normal;
  font-weight: normal;
  text-align: left;
  color: #000000;
  line-height: 1.5em;
}

main .optical .optic_box .optical_inner .opt_list a .opt_li_inn .move div {
  width: 1.2em;
  height: 1.2em;
  background-image: url(../images/optical/move_img02.png);
  background-size: 100%;
  background-position: center;
  background-repeat: no-repeat;
  margin-left: .5em;
}
.pagination{text-align: center;  display: block; margin: 0px; padding:20px 0px;}
.pagination a{padding: 0px;}
.pagination>li>a, .pagination>li>span{padding: 0px;}
.pagination ul li >a{ color:#333 !important; width: 46px; height: 46px; cursor: pointer; display: block; line-height: 46px; border-radius:3px!important; font-weight:bold; background:#FFF; border:1px solid #e0e0e0 !important;}
.pagination ul li >a.pagination_but{width: auto; padding: 0px 20px;}
.pagination ul li >span{border:1px solid #365bc9 !important;border-radius:0 !important;  font-weight:bold; color:#333 !important; width: 46px; height: 46px; cursor: pointer; display: block; line-height: 46px; border-radius:3px!important;}
.pagination ul li .fa{ font-weight:bold; font-size:18px; vertical-align:middle; line-height: 46px; display: inline-block; margin-top: -5px;}
.pagination ul li .fa-angle-left{ margin-right:10px;}
.pagination ul li .fa-angle-right{ margin-left:10px;}
.pagination ul li:hover .fa-angle-left, .pagination ul li:hover .fa-angle-right{color:#fff}
.pagination > .active > a, .pagination > .active > a:focus, .pagination > .active > a:hover, .pagination > .active > span, .pagination > .active > span:focus, .pagination > .active > span:hover{ background:#365bc9; color:#FFF !important;}
.pagination > li > a:focus, .pagination > li > a:hover, .pagination > li > span:focus, .pagination > li > span:hover{background:#365bc9;color:#FFF !important;}
.pagination > li > a, .pagination > li > span{border:none !important;}
.pagination > li{display:inline-block; margin:0 3px; vertical-align:middle;}