.secondary-navigation {
  margin: 140px 0 120px 0;
}

.secondary-navigation ul {
  display: flex;
  margin-left: 0px;
}

.secondary-navigation ul li a {
  position: relative;
  padding-bottom: 12px;
  font-size: 1rem;
  font-weight: 700;
  color: #323338;
  margin: 0 25px;
  letter-spacing: 0;
}

.secondary-navigation ul li a::before {
  content: "|";
  position: absolute;
  left: -25px;
  color: rgba(0, 0, 0, 0.1);
}

.secondary-navigation ul li a::after {
  content: "";
  width: 0;
  height: 2px;
  opacity: 1;
  color: #ff9e00;
  background: #ff9e00;
  position: absolute;
  left: 50%;
  bottom: 0;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
}

.secondary-navigation ul li:hover a::after {
  width: 85%;
}

.secondary-navigation ul li .parent::after {
  width: 85%;
}

.secondary-navigation li:nth-child(1) a::before {
  display: none;
}

.secondary-navigation .selected a::after {
  content: "";
  width: 85%;
  height: 2px;
  opacity: 1;
  color: #ff9e00;
  background: #ff9e00;
  position: absolute;
  left: 50%;
  bottom: 0;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  -webkit-transform: translateX(-50%);
  transform: translateX(-50%);
}

.third-navigation > ul {
  width: 100%;
  position: absolute;
  z-index: 1;
  left: 0;
  padding: 18px 0;
  background: #ffeccc;
  display: flex;
  justify-content: center;
  margin-left: unset;
}
@media screen and (max-width: 1258px) {
 .third-navigation > ul  {
 width: 900px;
 max-width: 900px;
}
}
.third-navigation > ul > li {
  margin-right: 48px;
}

.third-navigation > ul > li:last-child {
  margin-right: unset;
}

.third-navigation > ul > li > a {
  font-size: 1rem;
  font-weight: 400;
  color: #606366;
  position: unset;
  padding-bottom: unset;
}

.third-navigation > ul > li > a::after {
  display: none;
}

.third-navigation > ul > li > a::before {
  display: none;
}

.third-navigation .selected > a {
  color: #ff9e00;
}

.profile {
  display: flex;
  height: 242px;
  background: #f2f3f4;
}

.profile > img {
  height: 100%;
  width: unset;
  object-fit: cover;
}

.profile .pro_r {
  padding-top: 40px;
  padding-left: 60px;
}

.profile .pro_r > p {
  margin-bottom: 33px;
  font-size: 28px;
  font-weight: 500;
  color: #272727;
  line-height: 40px;
}

.profile .pro_r > p::after {
  content: "";
  display: block;
  width: 27px;
  height: 2px;
  background: #ffbe17;
  margin-top: 7px;
}

.profile .pro_r span {
  font-size: 14px;
  font-weight: 400;
  color: #303133;
  line-height: 28px;
}

.articlecontent h3 {
  margin-bottom: 20px;
  margin-left: 0;
  font-size: 20px;
  font-weight: 600;
  color: #272727;
  line-height: 28px;
}

.articlecontent h3::before {
  content: '';
  width: 6px;
  height: 6px;
  background-color: #004cbd;
  display: inline-block;
  transform: translateY(-50%);
  margin-right: 10px;
}

.articlecontent p {
  margin-bottom: 15px;
  font-size: 14px;
  font-weight: 400;
  color: #383838;
  line-height: 28px;
}

.articlecontent img {
  max-width: 100%;
}

.introduction:first-child > .content {
  margin-top: unset;
}

.content {
  margin-top: 60px;
}

.content h3 {
  margin-bottom: 19px;
  font-size: 20px;
  font-weight: 600;
  color: #272727;
  line-height: 28px;
}

.content h3::before {
  content: '';
  width: 6px;
  height: 6px;
  background-color: #004cbd;
  display: inline-block;
  transform: translateY(-50%);
  margin-right: 10px;
}

.content p {
  font-size: 14px;
  font-weight: 400;
  color: #383838;
  line-height: 28px;
}

.content ol {
  margin-left: 20px;
}

.content ol li {
  list-style-type: decimal;
  margin-bottom: 35px;
}

.content ol li:last-child {
  margin-bottom: unset;
}

.content > img {
  margin-top: 40px;
}

.team h3 {
  display: inline-block;
  margin-left: 13px;
  margin-bottom: 40px;
  font-size: 32px;
  font-weight: 500;
  color: #2c2d31;
  line-height: 45px;
}

.team .articlecontent h3 {
  margin-bottom: 20px;
  margin-left: 0;
  font-size: 20px;
  font-weight: 600;
  color: #272727;
  line-height: 28px;
}

.team .articlecontent h3::before {
  content: '';
  width: 6px;
  height: 6px;
  background-color: #004cbd;
  display: inline-block;
  transform: translateY(-50%);
  margin-right: 10px;
}

.icon {
  position: relative;
  z-index: 2;
  top: -10px;
  display: inline-block;
}

.icon .icon1 {
  width: 8px;
  height: 8px;
  background: #004cbd;
}

.icon .icon2 {
  position: absolute;
  top: 75%;
  left: 75%;
  z-index: -1;
  width: 8px;
  height: 8px;
  background: #ff9e00;
  -webkit-transform: translate(-25%, -25%);
  transform: translate(-25%, -25%);
}

.icon .icon3 {
  width: 8px;
  height: 8px;
  background: #ffffff;
}

.member {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

.member li {
  width: calc(100% / 2 - 30px);
  display: flex;
  margin-right: 30px;
  margin-bottom: 30px;
}

.member li:nth-child(2n) {
  margin-right: unset;
}

.member li a > img {
  width: 140px;
  height: 100%;
  object-fit: cover;
}

.int_member {
  flex: 1;
  padding: 28px 24px 19px;
  background: #3b3b3b;
}

.int_member .name {
  margin-right: 8px;
  font-size: 20px;
  font-weight: 500;
  color: #ffffff;
  line-height: 28px;
}

.int_member .name a {
  color: #ffffff;
}

.int_member span {
  font-size: 18px;
  font-weight: 500;
  line-height: 20px;
  color: #ffffff;
}

.int_member span a {
  display: inline-block;
  color: #ffffff;
}

.int_member .abstract {
  font-size: 14px;
  font-weight: 400;
  line-height: 20px;
}

.int_member p {
  margin: 20px 0;
  opacity: 0.7;
  font-size: 14px;
  font-weight: 400;
  line-height: 22px;
  color: #ffffff;
}

.int_member p a {
  color: #ffffff;
}

.int_member .more {
  text-align: left;
  font-size: 16px;
  font-weight: 400;
  color: #ff9e00;
  line-height: 19px;
}

.int_member .more::after {
  content: "";
  margin-left: 9px;
  display: inline-block;
  vertical-align: middle;
  height: 12px;
  width: 12px;
  background: url(/_upload/tpl/0e/90/3728/template3728/images/arrow.png);
  background-size: contain;
  background-repeat: no-repeat;
}

.ot_member {
  flex: 1;
  padding: 28px 24px 19px;
  background: #f1f1f1;
}

.ot_member span {
  margin-right: 8px;
  font-size: 20px;
  font-weight: 500;
  color: #3b3b3b;
  line-height: 28px;
}

.ot_member span a {
  color: #3b3b3b;
  display: inline-block;
}

.ot_member .abstract {
  font-size: 14px;
  font-weight: 400;
  color: #3b3b3b;
  line-height: 20px;
}

.ot_member .abstract a {
  display: inline-block;
  color: #3b3b3b;
}

.ot_member p {
  margin-top: 20px;
  opacity: 0.7;
  font-size: 14px;
  font-weight: 400;
  color: #404040;
  line-height: 22px;
}

.ot_member p a {
  color: #404040;
}

.overview-wrap {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/banner1.jpg);
  background-repeat: no-repeat;
  background-position: top;
}

.overview-wrap1 {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/banner-1.jpg);
}

.overview-wrap2 {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/banner-2.jpg);
}

.overview-wrap3 {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/banner-3.jpg);
}

.overview-wrap4 {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/banner-4.jpg);
}

.graduate_img {
  margin-top: 110px;
  margin-bottom: 120px;
}

.graduate_img .en_white {
  display: none;
  width: 75%;
  padding-top: 70px;
  margin: 0 23px 20px 60px;
  opacity: 0.5;
  font-size: 42px;
  font-family: Gilroy, Gilroy-Bold;
  font-weight: 700;
  text-align: left;
  color: #ffffff;
  line-height: 51px;
}

.graduate_img .cn_white {
  margin-left: 60px;
  font-size: 36px;
  font-family: PingFang SC, PingFang SC-Semibold;
  font-weight: 600;
  text-align: left;
  color: #ffffff;
  line-height: 50px;
  text-shadow: 0px 2px 4px 0px rgba(0, 0, 0, 0.09);
}

.graduate_content {
  width: 80%;
  z-index: 3;
  background: #ffffff;
  padding: 50px 60px 40px 0;
}

.graduate_content .en {
  display: none;
  visibility: hidden;
  margin-bottom: 16px;
  opacity: 0.3;
  font-size: 32px;
  font-family: Gilroy, Gilroy-Semibold;
  font-weight: 600;
  text-align: left;
  color: #2c2d31;
  line-height: 38px;
}

.graduate_content .cn {
  font-size: 32px;
  font-family: PingFang SC, PingFang SC-Semibold;
  font-weight: 600;
  text-align: left;
  color: #2c2d31;
  line-height: 45px;
}

.graduate_content p {
  margin-top: 32px;
  font-size: 14px;
  font-family: PingFang SC, PingFang SC-Regular;
  font-weight: 400;
  text-align: left;
  color: #383838;
  line-height: 28px;
}

.graduate_content h3 {
  display: inline-block;
  margin-left: 9px;
  font-size: 32px;
  font-family: PingFang SC, PingFang SC-Medium;
  font-weight: 500;
  text-align: left;
  color: #2c2d31;
  line-height: 45px;
}

.graduate_position {
  width: 100%;
  background: #2854c8;
}

.position_content {
  padding: 60px 0;
}

.position_content h3 {
  display: inline-block;
  margin-left: 9px;
  font-size: 32px;
  font-family: PingFang SC, PingFang SC-Medium;
  font-weight: 500;
  text-align: left;
  color: #ffffff;
  line-height: 45px;
}

.materials {
  display: flex;
  margin: 40px 0;
}

.materials li {
  width: calc(100% / 4 - 30px);
  margin-right: 30px;
  padding: 90px 0;
  font-size: 20px;
  font-family: PingFang SC, PingFang SC-Semibold;
  font-weight: 600;
  text-align: center;
  color: #ffffff;
  line-height: 28px;
}

.materials li:last-child {
  margin-right: unset;
}

.materials .air {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/air.png);
}

.materials .liquid {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/liquid.png);
}

.materials .coalescence {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/coalescence.png);
}

.materials .adsorption {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/adsorption.png);
}

.materials .anti-counterfeiting {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/anti-counterfeiting.png);
}

.materials .preparation {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/preparation.png);
}

.materials .bamboo {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/bamboo.png);
}

.materials .grinding {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/grinding.png);
}

.materials .honeycomb {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/honeycomb.png);
}

.materials .high-frequency {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/high-frequency.png);
}

.materials .battery {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/battery.png);
}

.materials .insulating {
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/scientific-research/insulating.png);
}

.graduate_more {
  margin: 0 auto;
  padding: 14px 33px;
  width: 170px;
  border: 2px solid #ff9e00;
}

.graduate_more .more_cn {
  font-size: 16px;
  font-family: PingFang SC, PingFang SC-Regular;
  font-weight: 400;
  text-align: center;
  color: #ff9e00;
  line-height: 22px;
}

.graduate_more .more_cn::after {
  content: "";
  margin-left: 8px;
  display: inline-block;
  vertical-align: middle;
  background-image: url(/_upload/tpl/0e/90/3728/template3728/images/arrow.png);
  background-repeat: no-repeat;
  background-size: cover;
  width: 12px;
  height: 12px;
}

.graduate_more:hover {
  transition: all 0.2s linear 0s;
  box-shadow: 0.3125rem 0.3125rem 0 #f06e00;
  transform: translate(-0.3125rem, -0.3125rem);
}
@media screen and (max-width: 1344px) {
.third-navigation > ul {
 width: 1000px;
 margin-top: 100px;
}
}
@media screen and (max-width: 1258px) {
  .third-navigation > ul {
    width: 900px;
    margin-top: 100px;
    justify-content: space-around;
  }
}
@media screen and (max-width: 768px) {
  section {
    padding-top: 60px;
  }
  .secondary-navigation {
    margin-top: 35px;
  }
  .secondary-navigation > ul {
    margin-left: unset;
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .secondary-navigation > ul li {
    width: calc(47%);
    margin-bottom: 10px;
    margin-right: 0;
  }
  .secondary-navigation > ul li a {
    font-size: 14px;
    margin: 0;
    padding-bottom: unset;
    -webkit-line-clamp: 1;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    text-overflow: ellipsis;
    overflow: hidden;
  }
  .secondary-navigation > ul li a::before {
    display: none;
  }
  .secondary-navigation > ul li a::after {
    display: none;
  }
  .third-navigation > ul {
    width: 100%;
    margin-top: 100px;
    justify-content: space-around;
    position: absolute;
    top:250px;
  }
  .third-navigation > ul > li {
    margin-right: 0;
    width: auto;
    margin-bottom: 0;
  }
  .third-navigation > ul > li > a {
    font-size: 12px;
  }
  .graduate_img {
    padding-bottom: 20px;
    height: unset;
    margin-top: 80px;
    margin-bottom: 50px;
  }
  .graduate_img .en_white {
    padding-top: 55px;
    font-size: 28px;
  }
  .graduate_img .cn_white {
    font-size: 24px;
    margin-left: 5%;
  }
  .graduate_content {
    width: 100%;
    bottom: unset;
    padding: 30px 0;
  }
  .graduate_content h3 {
    font-size: 26px;
  }
  .graduate_content .cn {
    font-size: 26px;
  }
  .member li {
    width: 100%;
    margin-right: unset;
  }
  .team h3 {
    font-size: 26px;
  }
  .content > img {
    margin-top: 20px;
    width: 100%;
    object-fit: cover;
  }
  .content p > img {
    width: 100%;
    object-fit: cover;
  }
  .profile {
    height: 100%;
  }
  .profile .pro_r {
    padding-top: unset;
    padding-left: 10px;
  }
  .profile .pro_r > p {
    margin-bottom: unset;
  }
  .materials {
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .materials li {
    width: 48%;
    margin-bottom: 10px;
    margin-right: 0;
    padding: 40px 0;
    font-size: 18px;
  }
}