* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  color: #333;
}
li {
  list-style-type: none;
}
a {
  text-decoration: none;
}
a:hover {
  color: #dc4637;
}
img {
  display: block;
  width: 100%;
}
.clear {
  clear: both;
}
.w1200 {
  width: 1200px;
  margin: auto;
}
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}
.top .logo img {
  height: 80px;
}
.top .nav {
  display: block;
}
.top .nav .navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 550px;
}
.top .nav .navbar .nli {
  position: relative;
}
.top .nav .navbar .nli a {
  display: block;
  line-height: 80px;
}
.top .nav .navbar .nli .nav_sub {
  display: none;
  position: absolute;
  top: 80px;
  left: 50%;
  z-index: 2;
  width: 200px;
  border-radius: 5px;
  box-shadow: #ccc 0 0 3px;
  background: #fff;
  transition: 0.2s;
  transform: translateX(-50%);
}
.top .nav .navbar .nli .nav_sub li {
  border-bottom: dashed 1px #ccc;
}
.top .nav .navbar .nli .nav_sub li:last-child {
  border-bottom: none;
}
.top .nav .navbar .nli .nav_sub li a {
  display: block;
  width: 100%;
  height: 100%;
  line-height: 2.5em;
  text-align: center;
}
.top .nav .navbar .nli:hover .nav_sub {
  display: block;
}
.top .mNav {
  display: none;
}
.banner .swiper-container {
  width: 100%;
  height: 100%;
}
.banner .swiper-slide {
  text-align: center;
  font-size: 18px;
  background: #fff;
  /* Center slide text vertically */
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
.title {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 40px;
}
.title span {
  width: 16px;
  height: 16px;
  background: #dc4637;
  transform: rotate(-45deg);
}
.title .before {
  position: relative;
}
.title .before::before {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border: solid 2px #dc4637;
  left: -6px;
  top: -6px;
}
.title .after {
  position: relative;
}
.title .after::before {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border: solid 2px #dc4637;
  left: 6px;
  top: 6px;
}
.title h1 {
  margin: 0 20px;
  font-size: 30px;
}
.b1 .b1_wrapper {
  margin: 40px auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.b1 .b1_wrapper .b1_item {
  width: 280px;
  height: 130px;
  border-radius: 20px;
  background-size: cover;
}
.b1 .b1_wrapper .b1_item a {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
}
.b1 .b1_wrapper .b1_item a .iconfont {
  color: #fff;
  font-size: 38px;
  margin-right: 10px;
}
.b1 .b1_wrapper .b1_item a span {
  color: #fff;
  font-size: 30px;
}
.b1 .b1_wrapper .b1_item:first-child {
  background: url(../img/b1_bg1.png) no-repeat;
}
.b1 .b1_wrapper .b1_item:nth-child(2) {
  background: url(../img/b1_bg2.png) no-repeat;
}
.b1 .b1_wrapper .b1_item:nth-child(3) {
  background: url(../img/b1_bg3.png) no-repeat;
}
.b1 .b1_wrapper .b1_item:nth-child(4) {
  background: url(../img/b1_bg4.png) no-repeat;
}
.b2 {
  margin: 80px 0;
}
.b2 .b2_wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.b2 .b2_wrapper .b2_pic {
  width: 500px;
  height: 300px;
}
.b2 .b2_wrapper .b2_con {
  width: 650px;
  line-height: 2em;
}
.b2 .b2_wrapper .b2_con .b2_btn {
  width: 160px;
  height: 30px;
  background: #dc4637;
  border-radius: 15px;
  margin-top: 30px;
}
.b2 .b2_wrapper .b2_con .b2_btn a {
  color: #fff;
  display: block;
  width: 100%;
  height: 100%;
  text-align: center;
  font-size: 14px;
}
.b3 {
  padding: 80px 0;
  background: url(../img/b3_bg.jpg) no-repeat;
  background-size: cover;
}
.b3 .title h1 {
  color: #fff;
}
.b3 .title span {
  background: #fff;
}
.b3 .title .before::before,
.b3 .title .after::before {
  border: solid 2px #fff;
}
.b3 .b3_list .hd {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 500px;
  margin: 0 auto 40px auto;
}
.b3 .b3_list .hd li {
  color: #fff;
  cursor: pointer;
}
.b3 .b3_list .hd .active {
  position: relative;
}
.b3 .b3_list .hd .active::before {
  content: "";
  position: absolute;
  display: block;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background: #fff;
}
.b3 .b3_list .bd {
  overflow: hidden;
}
.b3 .b3_list .bd .b3_pic {
  background: #fff;
  width: 100%;
  height: 100%;
}
.b3 .b3_list .bd .b3_con {
  margin: 10px 0;
  width: 100%;
}
.b3 .b3_list .bd .b3_con p {
  color: #fff;
  font-size: 14px;
}
.b3 .b3_list .bd .b3_con p i {
  color: #fff;
  margin-left: 10px;
  font-size: 14px;
  font-weight: 300;
}
.b3 .b3_list .bd .b3_con p:first-child {
  font-size: 24px;
  font-weight: 600;
}
.b3 .b3_list .bd .swiper-container1 {
  width: 100%;
  height: 100%;
  display: block;
}
.b3 .b3_list .bd .swiper-slide {
  justify-content: space-between;
  flex-direction: column;
  /* Center slide text vertically */
  display: -webkit-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  -webkit-justify-content: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  -webkit-align-items: center;
  align-items: center;
}
.b3 .b3_list .bd .swiper-container2 {
  width: 100%;
  height: 100%;
  display: none;
}
.b3 .b3_list .bd .swiper-container3 {
  width: 100%;
  height: 100%;
  display: none;
}
.b4 {
  margin: 80px 0;
}
.b4 .b4_wrapper {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.b4 .b4_wrapper .b4_title {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding-bottom: 5px;
  margin-bottom: 10px;
}
.b4 .b4_wrapper .b4_title::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: #dc4637;
}
.b4 .b4_wrapper .b4_title h1 {
  position: relative;
  padding-left: 50px;
  font-size: 30px;
}
.b4 .b4_wrapper .b4_title h1::before {
  content: "";
  position: absolute;
  width: 16px;
  height: 28px;
  background: #dc4637;
  transform: skew(-20deg) translatey(-50%);
  top: 50%;
  left: 0;
}
.b4 .b4_wrapper .b4_title h1::after {
  content: "";
  position: absolute;
  width: 6px;
  height: 28px;
  background: #dd6f64;
  transform: skew(-20deg) translatey(-50%);
  top: 50%;
  left: 20px;
}
.b4 .b4_wrapper .b4_title a {
  font-size: 14px;
}
.b4 .b4_wrapper .b4_left {
  width: 560px;
}
.b4 .b4_wrapper .b4_right {
  width: 560px;
}
.b4 .b4_wrapper .b4_list li {
  border-bottom: dashed 1px #ccc;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}
.b4 .b4_wrapper .b4_list li .b4_con p {
  line-height: 1.5em;
}
.b4 .b4_wrapper .b4_list li .b4_con span {
  font-size: 14px;
  color: #999;
}
.b4 .b4_wrapper .b4_list li .b4_btn {
  width: 20px;
  height: 20px;
  background: #dc4637;
  text-align: center;
  line-height: 20px;
  border-radius: 50%;
}
.b4 .b4_wrapper .b4_list li .b4_btn a {
  display: block;
  width: 100%;
  height: 100%;
  color: #fff;
}
footer {
  background: #dc4637;
  font-size: 14px;
}
footer .f_wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  position: relative;
}
footer .f_wrapper::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: #dd6f64;
}
footer .f_wrapper .f_logo img {
  width: 200px;
}
footer .f_wrapper .f_logo p {
  font-size: 30px;
  color: #fff;
  margin-top: 10px;
}
footer .f_wrapper .f_contact {
  /* display: flex;
            justify-content: space-between;
            align-items: center;
             */
}
footer .f_wrapper .f_contact .f_erweima {
  text-align: center;
}
footer .f_wrapper .f_contact .f_erweima img {
  width: 100px;
  height: 100px;
}
footer .f_wrapper .f_contact .f_erweima span {
  color: #fff;
  margin-top: 5px;
  display: inline-block;
}
footer .f_wrapper_01 {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
footer .f_wrapper_01 .f_info {
  padding: 20px 0;
}
footer .f_wrapper_01 .f_info .friendlink {
  color: #fff;
}
footer .f_wrapper_01 .f_info .friendlink a {
  color: #fff;
  display: inline-block;
  margin: 0 5px;
}
footer .f_wrapper_01 .f_info .f_copyright {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
footer .f_wrapper_01 .f_info .f_copyright p {
  color: #fff;
  line-height: 1.5em;
}
footer .f_wrapper_01 .f_info .f_copyright p a {
  color: #fff;
}
footer .f_wrapper_01 .f_contact_con {
  /* width: 300px;
            margin-right: 20px; */
}
footer .f_wrapper_01 .f_contact_con p {
  color: #fff;
  line-height: 2em;
}
.n1 {
  margin: 80px 0;
}
.n1 .n1_wrapper .n1_pic {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.n1 .n1_wrapper .n1_pic .n1_left {
  width: 540px;
  height: 360px;
}
.n1 .n1_wrapper .n1_pic .n1_left img {
  width: 540px;
  height: 360px;
}
.n1 .n1_wrapper .n1_pic .n1_right {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  width: 650px;
  height: 360px;
}
.n1 .n1_wrapper .n1_pic .n1_right img {
  width: 320px;
  height: 175px;
}
.n1 .n1_wrapper .n1_con {
  line-height: 2em;
}
.n2 {
  margin: 80px 0;
}
.n2 .n2_wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.n2 .n2_wrapper .n2_item {
  width: 210px;
  height: 270px;
  background: #fff1f0;
  border-radius: 20px;
}
.n2 .n2_wrapper .n2_item .n2_title {
  background: #dc4637;
  border-radius: 20px;
  width: 100%;
  height: 40px;
  text-align: center;
  margin-bottom: 20px;
}
.n2 .n2_wrapper .n2_item .n2_title span {
  color: #fff;
  line-height: 40px;
  font-size: 18px;
  font-weight: 600;
}
.n2 .n2_wrapper .n2_item .n2_con {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-direction: column;
  height: 210px;
}
.n2 .n2_wrapper .n2_item .n2_txt {
  padding: 0 20px;
  line-height: 1.5em;
  text-align: center;
}
.n2 .n2_wrapper .n2_item .n2_no {
  padding-bottom: 10px;
}
.n2 .n2_wrapper .n2_item .n2_no span {
  font-size: 66px;
  background: linear-gradient(0deg, #fff1f0, #dc4434);
  background-clip: text;
  color: transparent;
}
.n3 {
  margin: 80px 0;
}
.n3 img {
  width: 800px;
  margin: 0 auto;
}
.news {
  margin: 80px 0;
}
.news .news_wrapper .news_list li {
  padding: 20px 40px;
  position: relative;
  border-bottom: dashed 1px #ccc;
}
.news .news_wrapper .news_list li::before {
  content: "";
  position: absolute;
  width: 15px;
  height: 15px;
  top: 25px;
  left: 0;
  background: #dc4434;
  border-radius: 50%;
}
.news .news_wrapper .news_list li a {
  display: block;
  width: 100%;
  height: 100%;
}
.news .news_wrapper .news_list li a h3 {
  font-size: 18px;
  transition: 0.2s;
}
.news .news_wrapper .news_list li a p {
  font-size: 14px;
  line-height: 1.5em;
  margin: 8px 0;
}
.news .news_wrapper .news_list li a .news_date span {
  font-size: 14px;
  color: #737373;
}
.news .news_wrapper .news_list li a .news_date span:last-child {
  color: #dc4434;
  margin-left: 40px;
}
.news .news_wrapper .news_list li:hover h2 {
  color: #dc4434;
}
.news .news_wrapper .bread {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  width: 100%;
  padding: 10px 0;
}
.news .news_wrapper .bread li a {
  color: #737373;
  font-size: 12px;
}
.news .news_wrapper .news_content .news_title {
  text-align: center;
  padding: 15px 0;
  border-bottom: dashed 1px #ccc;
}
.news .news_wrapper .news_content .news_title h3 {
  line-height: 3em;
  font-size: 20px;
}
.news .news_wrapper .news_content .news_title .news_info {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 14px;
}
.news .news_wrapper .news_content .news_title .news_info span {
  color: #737373;
}
.news .news_wrapper .news_content .news_title .news_info div {
  margin: 0 40px;
}
.news .news_wrapper .news_content .news_con {
  padding: 15px 0;
}
.news .news_wrapper .news_content .news_con img {
  max-width: 1200px;
  width: auto;
}
.news .news_wrapper .number_type {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 40px 0;
}
.news .news_wrapper .number_type li {
  margin: 0 30px;
}
.news .news_wrapper .number_type .active {
  position: relative;
}
.news .news_wrapper .number_type .active a {
  color: #dc4434;
  font-weight: 600;
}
.news .news_wrapper .number_type .active::before {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 2px;
  background: #dc4434;
}
.news .news_wrapper .number_list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.news .news_wrapper .number_list .number_item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  background: #f3f5f7;
  padding: 15px;
}
.news .news_wrapper .number_list .number_item .number_pic {
  width: 200px;
  height: 200px;
}
.news .news_wrapper .number_list .number_item .number_con {
  width: 350px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-direction: column;
}
.news .news_wrapper .number_list .number_item .number_con .number_name h3 {
  display: inline-block;
  font-size: 24px;
  margin-right: 10px;
  line-height: 1.5em;
}
.news .news_wrapper .number_list .number_item .number_con .number_name i {
  font-size: 12px;
  color: #737373;
}
.news .news_wrapper .number_list .number_item .number_con .number_name span {
  display: block;
  font-size: 14px;
}
.news .news_wrapper .number_list .number_item .number_con .number_text {
  margin: 15px 0;
  font-size: 14px;
}
.news .news_wrapper .number_list .number_item .number_con .number_btn {
  align-self: flex-end;
  padding-right: 20px;
}
.news .news_wrapper .number_list .number_item .number_con .number_btn a {
  color: #dc4434;
  font-size: 14px;
  position: relative;
}
.news .news_wrapper .number_list .number_item .number_con .number_btn a .iconfont {
  width: 18px;
  height: 18px;
  border: solid 1px #dc4434;
  border-radius: 50%;
  display: block;
  position: absolute;
  top: 50%;
  right: -20px;
  transform: translate(0, -50%);
}
.news .news_wrapper .number_list .number_item .number_con .number_btn a .icon-jiantou {
  color: #dc4434;
  font-size: 12px;
}
.news .news_wrapper .number_list .number_item .number_con .number_btn a .icon-jiantou::before {
  position: absolute;
  top: 7px;
  right: 1px;
  transform: translateY(-50%);
}
.news .news_wrapper .number_content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.news .news_wrapper .number_content .num_left {
  width: 400px;
  height: 400px;
  background: #dc4434;
  padding: 20px;
  transform: rotate(2deg);
}
.news .news_wrapper .number_content .num_left img {
  transform: rotate(-2deg);
}
.news .news_wrapper .number_content .num_right {
  width: 750px;
}
.news .news_wrapper .number_content .num_right .num_name {
  padding-bottom: 10px;
  border-bottom: solid 1px #dc4434;
}
.news .news_wrapper .number_content .num_right .num_name h3 {
  display: inline-block;
  font-size: 36px;
  color: #dc4434;
  margin-right: 20px;
}
.news .news_wrapper .number_content .num_right .num_name i {
  color: #737373;
}
.news .news_wrapper .number_content .num_right .num_name span {
  display: block;
  line-height: 1.5em;
}
.news .news_wrapper .number_content .num_right .num_con {
  padding-top: 10px;
}
.news .news_wrapper .lecture_list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.news .news_wrapper .lecture_list li {
  border: solid 1px #ccc;
  border-radius: 10px;
  overflow: hidden;
  /* box-shadow: 0 0 3px #ccc; */
  transition: 0.2s;
}
.news .news_wrapper .lecture_list li .lecture_pic {
  width: 100%;
  height: 160px;
  overflow: hidden;
}
.news .news_wrapper .lecture_list li .lecture_con {
  text-align: center;
}
.news .news_wrapper .lecture_list li .lecture_con p {
  padding: 10px;
}
.news .news_wrapper .lecture_list li:hover {
  box-shadow: 0 0 10px #ccc;
  border: solid 1px transparent;
}
.news .news_wrapper .lecture_list li:hover p {
  color: #dc4434;
}
.news .news_wrapper .download_list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  margin: 20px;
  box-shadow: 0 0 10px #ccc;
  border-radius: 10px;
  transition: 0.3s;
}
.news .news_wrapper .download_list li:hover {
  transform: translateY(-10px);
}
.news .news_wrapper .download_list li img {
  width: 50px;
}
.news .news_wrapper .download_list li .download_tit {
  flex-grow: 2;
  margin-left: 20px;
}
.news .news_wrapper .download_list li .download_tit h3 {
  font-size: 18px;
  font-weight: 500;
}
.news .news_wrapper .download_list li .download_tit span {
  font-size: 14px;
  color: #737373;
}
.news .news_wrapper .download_list li .download_btn a {
  display: block;
  font-size: 14px;
  line-height: 24px;
}
.news .news_wrapper .download_list li .download_btn a .iconfont {
  margin-right: 10px;
  font-size: 24px;
}
.news .page .pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-left: 0;
  margin: 20px 0;
  border-radius: 4px;
}
.news .page .pagination > li {
  display: inline;
}
.news .page .pagination > li > a,
.news .page .pagination > li > span {
  position: relative;
  float: left;
  padding: 6px 12px;
  line-height: 1.42857;
  text-decoration: none;
  color: #dc4434;
  background-color: #fff;
  border: 1px solid #ddd;
  margin-left: -1px;
}
.news .page .pagination > li:first-child > a,
.news .page .pagination > li:first-child > span {
  margin-left: 0;
  border-bottom-left-radius: 4px;
  border-top-left-radius: 4px;
}
.news .page .pagination > li:last-child > a,
.news .page .pagination > li:last-child > span {
  border-bottom-right-radius: 4px;
  border-top-right-radius: 4px;
}
.news .page .pagination > li > a:hover,
.news .page .pagination > li > a:focus,
.news .page .pagination > li > span:hover,
.news .page .pagination > li > span:focus {
  z-index: 2;
  color: #dc4434;
  background-color: #eeeeee;
  border-color: #ddd;
}
.news .page .pagination > .active > a,
.news .page .pagination > .active > a:hover,
.news .page .pagination > .active > a:focus,
.news .page .pagination > .active > span,
.news .page .pagination > .active > span:hover,
.news .page .pagination > .active > span:focus {
  z-index: 3;
  color: #fff;
  background-color: #dc4434;
  border-color: #dc4434;
  cursor: default;
}
@media screen and (max-width: 768px) {
  .w1200 {
    width: 100%;
  }
  .top {
    height: 50px;
    padding: 2%;
  }
  .top .logo img {
    height: 40px;
  }
  .top .nav {
    display: none;
  }
  .top .mNav {
    display: block;
  }
  .top .mNav .mNav_icon {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-direction: column;
    width: 30px;
    height: 30px;
  }
  .top .mNav .mNav_icon li {
    width: 30px;
    height: 2px;
    background: #dc4434;
    transition: 0.3s;
  }
  .top .mNav .mNav_active li {
    transform-origin: 0;
  }
  .top .mNav .mNav_active li:nth-child(1) {
    transform: rotate(44deg);
  }
  .top .mNav .mNav_active li:nth-child(2) {
    opacity: 0;
  }
  .top .mNav .mNav_active li:nth-child(3) {
    transform: rotate(-44deg);
  }
  .top .mNav .mNav_list {
    display: none;
    width: 100vw;
    position: absolute;
    top: 50px;
    left: 0;
    z-index: 999;
  }
  .top .mNav .mNav_list li {
    line-height: 4em;
    text-align: center;
    background: #dc4434;
    border-bottom: dashed 1px #ccc;
  }
  .top .mNav .mNav_list li:last-child {
    border: none;
  }
  .top .mNav .mNav_list li a {
    display: block;
    width: 100%;
    height: 100%;
    color: #fff;
  }
  .top .mNav .mNav_list .mNav_erweima {
    line-height: 1em;
    padding: 2% 0;
  }
  .top .mNav .mNav_list .mNav_erweima img {
    width: 100px;
    height: 100px;
    margin: 2% auto;
  }
  .top .mNav .mNav_list .mNav_erweima span {
    color: #fff;
    line-height: 1em;
  }
  .b1 .b1_wrapper {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2%;
    padding: 0 2%;
    margin: 5% 0;
  }
  .b1 .b1_wrapper .b1_item {
    width: 100%;
    height: 80px;
  }
  .b1 .b1_wrapper .b1_item a {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
  }
  .b1 .b1_wrapper .b1_item a .iconfont {
    font-size: 32px;
    margin-right: 0;
  }
  .b1 .b1_wrapper .b1_item a span {
    font-size: 14px;
  }
  .title {
    margin-bottom: 5%;
  }
  .title h1 {
    font-size: 20px;
  }
  .title .before {
    width: 14px;
    height: 14px;
  }
  .title .before::before {
    width: 10px;
    height: 10px;
  }
  .title .after {
    width: 14px;
    height: 14px;
  }
  .title .after::before {
    width: 10px;
    height: 10px;
  }
  .b2 {
    margin: 10% 0;
  }
  .b2 .b2_wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-direction: column;
    padding: 0 2%;
  }
  .b2 .b2_wrapper .b2_pic {
    width: 100%;
    height: auto;
  }
  .b2 .b2_wrapper .b2_con {
    width: 100%;
    line-height: 1.5em;
    margin-top: 5%;
  }
  .b2 .b2_wrapper .b2_con .b2_btn {
    width: 80%;
    margin: 5% auto;
  }
  .b2 .b2_wrapper .b2_con .b2_btn a {
    line-height: 2em;
  }
  .b3 {
    padding: 10% 2%;
  }
  .b3 .b3_list {
    width: 100%;
  }
  .b3 .b3_list .hd {
    width: 100%;
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
  }
  .b4 {
    margin: 10% 0;
  }
  .b4 .b4_wrapper {
    flex-direction: column;
    padding: 0 2%;
  }
  .b4 .b4_wrapper .b4_title h1 {
    font-size: 20px;
    padding-left: 35px;
  }
  .b4 .b4_wrapper .b4_title h1::before {
    width: 12px;
    height: 22px;
  }
  .b4 .b4_wrapper .b4_title h1::after {
    width: 6px;
    height: 22px;
    left: 16px;
  }
  .b4 .b4_wrapper .b4_left {
    width: 100%;
  }
  .b4 .b4_wrapper .b4_right {
    width: 100%;
    margin-top: 10%;
  }
  footer {
    padding: 0 2%;
  }
  footer .f_wrapper {
    font-size: 14px;
    display: none;
  }
  footer .f_wrapper .f_logo {
    display: none;
  }
  footer .f_wrapper .f_erweima {
    display: none;
  }
  footer .f_wrapper .f_contact .f_contact_con {
    width: 100%;
    text-align: center;
  }
  footer .f_wrapper_01 {
    flex-direction: column;
  }
  footer .f_wrapper_01 .f_info {
    text-align: center;
    padding: 5% 0 0 0;
  }
  footer .f_wrapper_01 .f_info .f_copyright {
    flex-direction: column;
  }
  footer .f_wrapper_01 .f_contact_con {
    padding-bottom: 5%;
  }
  .n1 {
    margin: 0;
    padding: 10% 2%;
  }
  .n1 .n1_wrapper {
    width: 100%;
  }
  .n1 .n1_wrapper .n1_pic {
    margin-bottom: 5%;
  }
  .n1 .n1_wrapper .n1_pic .n1_left {
    width: 100%;
    height: auto;
    margin-bottom: 2%;
  }
  .n1 .n1_wrapper .n1_pic .n1_left img {
    width: 100%;
    height: auto;
  }
  .n1 .n1_wrapper .n1_pic .n1_right {
    width: 100%;
    height: auto;
  }
  .n1 .n1_wrapper .n1_pic .n1_right img {
    width: 50%;
    height: auto;
    padding: 1%;
  }
  .n2 {
    margin: 0;
    padding: 10% 2%;
  }
  .n2 .n2_wrapper {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2%;
  }
  .n2 .n2_wrapper .n2_item {
    width: 100%;
    height: auto;
  }
  .n2 .n2_wrapper .n2_item .n2_con {
    height: 190px;
  }
  .n2 .n2_wrapper .n2_item .n2_con .n2_txt {
    padding: 0 2%;
  }
  .n2 .n2_wrapper .n2_item .n2_con .n2_txt p {
    font-size: 14px;
  }
  .n2 .n2_wrapper .n2_item:last-child {
    grid-column: 1/3;
  }
  .n2 .n2_wrapper .n2_item:last-child .n2_con {
    height: 150px;
  }
  .n3 {
    margin: 0;
    padding: 10% 2%;
  }
  .n3 .n3_con img {
    width: 100%;
  }
  .news {
    margin: 0;
    padding: 10% 2%;
  }
  .news .news_wrapper .bread {
    justify-content: flex-start;
  }
  .news .news_wrapper .news_list li {
    padding: 2% 0 2% 5%;
  }
  .news .news_wrapper .news_list li::before {
    top: 10%;
    width: 10px;
    height: 10px;
  }
  .news .news_wrapper .news_list li .news_date {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .news .news_wrapper .news_content .news_title h3 {
    line-height: 1.25em;
    font-size: 16px;
    text-align: left;
    margin-bottom: 2%;
  }
  .news .news_wrapper .news_content .news_title .news_info {
    justify-content: space-around;
  }
  .news .news_wrapper .news_content .news_title .news_info div {
    margin: 0;
  }
  .news .news_wrapper .news_content .news_con img {
    max-width: 100%;
  }
  .news .news_wrapper .number_type {
    margin: 2% 0;
    justify-content: space-around;
  }
  .news .news_wrapper .number_type li {
    margin: 0;
  }
  .news .news_wrapper .number_list {
    margin: 5% 0;
  }
  .news .news_wrapper .number_list .number_item {
    flex-direction: column;
    padding: 5%;
  }
  .news .news_wrapper .number_list .number_item .number_pic {
    width: 100%;
    height: 20vh;
  }
  .news .news_wrapper .number_list .number_item .number_con {
    width: 100%;
  }
  .news .news_wrapper .number_list .number_item .number_con .number_name h3 {
    font-size: 18px;
  }
  .news .news_wrapper .number_list .number_item .number_con .number_text {
    display: none;
  }
  .news .news_wrapper .number_content {
    flex-direction: column;
  }
  .news .news_wrapper .number_content .num_left {
    transform: rotate(0);
    width: 100%;
    height: auto;
  }
  .news .news_wrapper .number_content .num_left img {
    transform: rotate(0);
  }
  .news .news_wrapper .number_content .num_right {
    width: 100%;
    margin-top: 5%;
  }
  .news .news_wrapper .lecture_list {
    grid-template-columns: repeat(2, 1fr);
  }
  .news .news_wrapper .lecture_list li .lecture_pic {
    height: 12vh;
  }
  .news .news_wrapper .lecture_list li .lecture_con p {
    line-height: 1.25em;
    font-size: 14px;
    padding: 5%;
  }
  .news .news_wrapper .download_list li {
    padding: 5% 2%;
    margin: 5% 0;
  }
  .news .news_wrapper .download_list li .download_tit h3,
  .news .news_wrapper .download_list li .download_tit span {
    font-size: 14px;
  }
}