.top-logo {
  height: 120px;
}



.header.head{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: #fff;
  z-index: 99999;
}
.header-comm {
  height: 40px;
  background-color: #f9f9f9;
}

.header-comm .header_cong {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 40px;
}

.header-comm .header_cong>div:nth-child(1) {
  display: flex;
  align-items: center;
}

.header-comm .header_cong>div:nth-child(1) a {
  color: #068dcb;
}

.header-comm .header-right>ul {
  display: flex;
  align-items: center;
}

.header-comm .header-right>ul li {
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid #d2d2d2;
  cursor: pointer;
}

.header-comm .header-right>ul li img {
  margin-right: 10px;
}

.header-comm .header-right>ul li:nth-child(1) {
  width: 85px;
}

.header-comm .header-right>ul li:nth-child(2) {
  width: 95px;
}

.header-comm .header-right>ul li:nth-child(3) {
  width: 107px;
}

    .header-comm .header-right > ul li:nth-child(4) {
        width: 97px;
    }
    .header-comm .header-right > ul li:nth-child(5) {
        width: 65px;
        border: 0px;
    }

.header-comm .header-right>ul li .icon_l {
  margin: 0 0 0 5px;
}

.top-logo {
  display: flex;
}

.top-logo>div:nth-child(2) {
  display: flex;
  padding-top: 35px;
  margin-left: 195px;
  align-items: center;
}

.top-logo>div:nth-child(2) .inpu_search {
  width: 588px;
  height: 50px;
  border: 1px solid #0686ce;
  border-radius: 3px;
  display: flex;
}

.top-logo>div:nth-child(2) .inpu_search input {
  width: 485px;
  height: 48px;
  padding-left: 10px;
}

.top-logo>div:nth-child(2) .inpu_search div {
  width: 101px;
  height: 48px;
  background-color: #0686ce;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  cursor: pointer;
}

.top-logo>div:nth-child(2) .inpu_search div img {
  margin-right: 8px;
}

.top-logo>div:nth-child(2) .menu {
  display: flex;
  height: 80px;
  align-items: center;
  padding-left: 46px;
  font-size: 16px;
}

.top-logo>div:nth-child(2) .menu>div {
  display: flex;
  align-items: center;
  cursor: pointer;
}

.top-logo>div:nth-child(2) .menu>div:nth-child(1) {
  margin-right: 59px;
}

.top-logo>div:nth-child(2) .menu img {
  margin-left: 4px;
}

.but-foo {
  background: url(../images/biology_02.png);
  background-size: cover;
}

.bot-father {
  margin-top: 100px;

  border-top: 1px solid #dcdcdc;
  border-bottom: 1px solid #dcdcdc;
}

.bot-father .bot-gy {
  padding-top: 49px;
  height: 412px;
  position: relative;

}

.bot-father .bot-gy .explain>ul {
  display: flex;
}

.bot-father .bot-gy .explain>ul>li:nth-child(1) {
  color: #666666;
  width: 338px;
  line-height: 23px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(1)>div {
  font-size: 14px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(1)>div:nth-child(3) {
  margin-top: 25px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(2) {
  line-height: 24px;
  width: 238px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(2)>div {
  font-size: 14px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(2)>div:nth-child(2) {
  margin-top: 25px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(3) {
  line-height: 24px;
  width: 231px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(3)>div {
  font-size: 14px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(3)>div:nth-child(2) {
  margin-top: 50px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(4) {
  width: 242px;
  line-height: 24px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(4)>div {
  font-size: 14px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(4)>div:nth-child(2) {
  margin-top: 25px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(5) {
  line-height: 24px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(5)>div {
  font-size: 14px;
}

.bot-father .bot-gy .explain>ul>li:nth-child(5)>div:nth-child(2) {
  margin-top: 30px;
  text-align: center;
}

.bot-father .bot-gy .explain>ul>li .headline {
  font-size: 16px;
  color: #333;
  margin-bottom: 22px;
}

.take {
  position: absolute;
  width: 1200px;
  top: -101px;
  left: 0;
  height: 100px;
  z-index: 80;
}

.take ul {
  display: flex;
}

.take ul li {
  width: 240px;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100px;
}

.take ul li>div {
  font-size: 16px;
}

.take ul li .take_img {
  width: 50px;
  height: 50px;
  border: 1px solid #9ab5ed;
  display: flex;
  justify-content: center;
  align-items: center;
  border-radius: 50%;
  margin-right: 10px;
}

.take ul li .discolor {
  margin-top: 6px;
  color: #666666;
}

.base {
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.product_center {
  height: 90px;
  display: flex;
  align-items: center;
}

.product_center .product_home {
  height: 30px;
  width: 100%;
  border: 1px solid #ebebeb;
  display: flex;
  align-items: center;
}

.product_center .product_home>div {
  margin-left: 5px;
}

.product_center .product_home img {
  margin-left: 10px;
}

.product_center .product_home span {
  font-family: "宋体";
  font-size: 12px;
  color: #9b9b9b;
  margin: 0 5px;
}

.left_menu {
  width: 200px;
  height: 570px;
  border: 1px solid #eeeeee;
  margin-right: 20px;
}

.left_menu .menu1 {
  padding-bottom: 7px;
  border-bottom: 1px solid #e5e5e5;
}

.left_menu .menu1 ul li {
  position: relative;
  margin-bottom: 14px;
  height: 20px;
  padding-left: 29px;
  cursor: pointer;
  user-select: none;
  font-size: 14px;
}

.left_menu .menu1 ul .on:hover {
  color: #0066b3;
}

.left_menu .menu1 ul .on:hover::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 20px;
  background-color: #0066b3;
}

.left_menu .menu1 ul .selct {
  color: #0066b3;
}

.left_menu .menu1 ul .selct::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 20px;
  background-color: #0066b3;
}

.left_menu .menu2 {
  padding-bottom: 7px;
  border-bottom: 1px solid #e5e5e5;
}

.left_menu .menu2 ul li {
  position: relative;
  margin-bottom: 14px;
  height: 20px;
  padding-left: 29px;
  cursor: pointer;
  user-select: none;
  font-size: 14px;
}

.left_menu .menu2 ul .on:hover {
  color: #0066b3;
}

.left_menu .menu2 ul .on:hover::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 20px;
  background-color: #0066b3;
}

.left_menu .menu2 ul .selct {
  color: #0066b3;
}

.left_menu .menu2 ul .selct::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 20px;
  background-color: #0066b3;
}

.left_menu .menu3 {
  padding-bottom: 6px;
}

.left_menu .ment_zh {
  font-size: 16px;
  font-weight: 700;
  padding: 29px 0 18px 29px;
  height: auto;
}

.left_menu .menu3 ul li {
  position: relative;
  margin-bottom: 14px;
  height: 20px;
  padding-left: 29px;
  cursor: pointer;
  user-select: none;
  font-size: 12px;
}

.left_menu .menu3 ul .on:hover {
  color: #0066b3;
}

.left_menu .menu3 ul .on:hover::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 20px;
  background-color: #0066b3;
}

.left_menu .menu3 ul .selct {
  color: #0066b3;
}

.left_menu .menu3 ul .selct::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 2px;
  height: 20px;
  background-color: #0066b3;
}

.setting_hh {
    border-bottom: 1px solid #eeeeee;
    padding-bottom: 80px;
    margin-top: 20px;
}


.paging {
  display: flex;
  justify-content: flex-end;
  margin-top: 39px;
  padding-right: 48px;
}

.paging .paging_page {
  min-width: 620px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.paging .number {
  display: flex;
}

.paging .number>div {
  width: 40px;
  height: 40px;
  border: 1px solid #dcdcdc;
  color: #dcdcdc;
  line-height: 40px;
  text-align: center;
  color: #666666;
  margin-right: 2px;
  cursor: pointer;
}

.paging .number>div>a {
  display: block;
}

.paging .number .on {
  border: 0px;
  background-color: #0066b3;
  color: #fff;
}

.paging .number .more {
  border: 0px;
}

.paging .number .arrows {
  font-family: "宋体";
  text-align: center;
  font-size: 26px;
  color: #aaaaaa;
  line-height: 40px;
  cursor: pointer;
  margin: 0 5px;
}


.top-logo>div:nth-child(2) .menu>div {
  display: flex;
  align-items: center;
  position: relative;
  cursor: pointer;
  height: 80px;
  transition: all 1s;
}

.top-logo>div:nth-child(2) .menu>div:hover .serve_menu {
  display: block;
}

.top-logo>div:nth-child(2) .menu>div:hover .serve_nav {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: flex-start;
}

.serve_nav {
  display: none;
  width: 80vw;
  height: auto;
  position: absolute;
  top: 80px;
  left: -50vw;
  z-index: 99;
  flex-direction: row;
  justify-content: space-between;
  align-items: flex-start;
}

.serve_nav .nav_left .leftlist {
  display: flex;
  flex-direction: column;
  width: 200px;
  color: #fff;
  background-color: #0686ce;
  height: 558px;
}

.serve_nav .nav_right {
  width: 100%;
  background: #c9ebfb;
  height: 558px;
}

.serve_nav .nav_right .cons {
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  align-items: center;
  padding: 0 50px;
}

.serve_nav .nav_right .cons .con {
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  align-items: center;
  width: 20%;
  line-height: 50px;
  font-size: 14px;
}

.serve_nav .nav_right .cons .con .icon {
  margin-right: 20px;
}

.serve_nav .nav_right .tit {
  line-height: 60px;
  font-size: 18px;
  font-weight: 700;
  color: #0686ce;
  padding: 0 50px;
}

.serve_nav .nav_left .leftlist .li {
  line-height: 50px;
  padding: 0 50px;
  border-bottom: dashed 1px #83c3e7;
  font-size: 16px;
}

.serve_nav .nav_left .leftlist .li .text {
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  align-items: center;
}

.serve_nav .nav_left .leftlist .li.ind .text img {
  transform: rotate(180deg);
}

.serve_nav .nav_left .leftlist .li .sub {
  display: none;
  flex-direction: column;
  padding: 0 10px;
  font-size: 14px;
  height: auto;
  transition: all .3s;
}

.serve_nav .nav_left .leftlist .li.ind .sub {
  display: flex;
}

.serve_nav .nav_left .leftlist .li:last-child {
  border: none;
}

.serve_menu {
  display: none;
  width: 170px;
  height: 256px;
  position: absolute;
  top: 80px;
  left: -40px;
  z-index: 99;

}

.serve_nav::before {
  content: "";
  display: block;
  background: url("../images/icon003.png");
  position: absolute;
  top: -4px;
  right: 27vw;
  transform: translate(-50%, -50%);
  width: 17px;
  height: 9px;
}

.serve_menu::before {
  content: "";
  display: block;
  background: url("../images/icon003.png");
  position: absolute;
  top: -4px;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 17px;
  height: 9px;
}

.serve_menu .serve_li {
  width: 170px;
  height: 204px;
  /* background-color: #84ccc9; */
  background-color: #0686ce;
  color: #fff;
}

.serve_menu .serve_li ul li {
  height: 51px;
  border-bottom: 1px dashed #c2e6e4;
  text-align: center;
  line-height: 51px;
}

.serve_menu .serve_li ul li a:hover {
  color: #0686ce;
}

.serve_menu .serve_li ul li:last-child {
  border-bottom: 0;
}

.serve_menu .serve_li ul li a {
  color: #fff;
}