/* body {
  width: 1180px;
} */
/* 中间宽度 */
.page_w {
  margin: auto;
  width: 1180px;
}
@media screen and (max-width: 1366px) {
}
@media screen and (min-width: 1680px) {
  body {
    transform: scale(1.3);
    transform-origin: 0 0;
    width: calc(100% / 1.3); /* 保持原始布局比例 */
  }
}

:root {
  --primary: #cd2c48;
  --secondary: #2b38af;
  --text-color: #333;
}
.bg-primary {
  background: #cd2c48;
}
.pt20 {
  padding-top: 20px;
}
.pt30 {
  padding-top: 30px;
}
.ml-5 {
  margin-left: 30px;
}
.mb-5 {
  margin-bottom: 30px;
}
.text-center {
  text-align: center;
}
.btn {
  display: inline-block;
  margin-bottom: 0;
  font-weight: normal;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  touch-action: manipulation;
  cursor: pointer;
  background-image: none;
  border: 1px solid transparent;
  padding: 6px 12px;
  font-size: 14px;
  line-height: 1.43;
  border-radius: 4px;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}
.btn-primary-gradient {
  background: linear-gradient(to right, #cd2c48, #2b38af);
  color: white;
}
.btn-light {
  background: #d9d9d9;
}
.btn-wh {
  padding: 6px 30px;
}
.title-bottom-line {
  border-bottom: 1px solid #d9d9d9;
  display: flex;
  justify-content: space-between;
}
.title-bottom-line .title-text {
  font-size: 20px;
  padding: 4px 12px;
  border-bottom: 3px solid #cd2c48;
  letter-spacing: 2px;
}

.header {
  height: 86px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding-top: 0rem;
  flex-wrap: wrap;
}
.header_content {
  background: white;
  position: sticky;
  top: 0;
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}
.parent-container {
  height: calc(100vh - 100px); /* 示例高度 */
  overflow-y: auto;
}
.header_logo {
  padding-bottom: 15px;
}
.header_logo img {
  height: 64px;
  width: auto;
}
.header_more {
  display: flex;
  align-items: flex-end;
  padding-left: 15px;
  padding-bottom: 13px;
}
/* 顶部搜索按钮 */
.header_search {
  display: flex;
  align-items: flex-end;
  padding-left: 15px;
  padding-bottom: 13px;
  cursor: pointer;
}
/* 黑色背景叠加效果 */
.search_overlay {
  height: 100vh;
  width: 100%;
  display: none;
  position: fixed;
  z-index: 999999;
  top: 0;
  left: 0;
  background-color: rgb(0,0,0);
  background-color: rgba(0,0,0, 0.8); /* 黑色，有一点透视（或透明）的效果 */
}
.search_overlay_content {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  top: 46%;
  /* margin: auto; */
}
.search_overlay_content form {
  display: flex;
  justify-content: center;
  align-items: center;
}
/* 关闭按钮 */
.search_overlay .search_close_btn {
  position: absolute;
  top: 20px;
  right: 45px;
  font-size: 40px;
  cursor: pointer;
  color: white;
  transform: rotate(45deg);
}
.search_overlay .search_close_btn:hover {
  color: #cd2c48;
}
/* 设置搜索框的样式 */
.search_overlay input[type=text] {
  padding: 15px;
  font-size: 16px;
  border: none;
  float: left;
  width: 30%;
  background: white;
}
.search_overlay input[type=text]:hover {
  background: #f1f1f1;
}

/* 设置提交按钮的样式 */
.search_overlay .search_btn {
  width: 84px;
  height: 52px;
  background: #cd2c48;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
}
.search_overlay .search_btn:hover {
  background: #cd2c48;
}

/* 头部 导航栏 */
.header_nav {
  display: flex;
}
.navbar {
  /* width: 1200px; */
}
.nav {
  width: 100%;
  position: relative;
  z-index: 2;
}
.nav ul {
  display: flex;
  justify-content: flex-end;
  /* justify-content: space-around; */
}
.nav ul > li {
  position: relative;
}
.nav ul > li > a {
  display: block;
  padding: 0px 15px;
  font-size: 16px;
  text-align: center;
  line-height: 49px;
}

/* 二三级菜单项通用样式 */
.nav ol > li > a {
  display: block;
  padding: 0 15px;
  line-height: 32px;
  text-align: center;
  font-size: 14px;
  white-space: nowrap;
  background-color: rgba(255, 255, 255, 0.85);
}

/* 二级三级菜单默认隐藏 */
.nav ol {
  display: none;
  position: absolute;
  transition: 0.3s;
}
/* 二级菜单位置 */
.nav ul > li > ol {
  left: 0;
  top: 100%;
}
/* 三级菜单位置 */
.nav > ul > li > ol > li > ol {
  left: 100%;
  top: 0;
}
/* 悬停显示子菜单 */
.nav li:hover > ol {
  display: block;
}

.nav ul ol > li > a:hover,
.nav ul > li > ol > li:hover > a {
  background: #cd2c48;
  color: white;
}
.nav ul > li:hover ol > li:nth-child(1) {
  border-top: 2px solid #cd2c48;
}

#m_nav {
  z-index: 999 !important;
  position: fixed;
  background: #fff;

  width: 100%;
  height: 100vh;
  right: -105%;
  top: 0;
  display: none;
  padding: 0;
  overflow: hidden;
  transition: all 0.3s ease-out;
  -webkit-transition: all 0.3s ease-out;
  -moz-transition: all 0.3s ease-out;
  -o-transition: all 0.3s ease-out;
  -ms-transition: all 0.3s ease-out;
  display: flex;
  justify-content: space-between;
}
#m_nav .left {
  flex-grow: 1;
  padding: 30px;
  position: relative;
}
#m_nav .left .logo {
  padding-left: 10rem;
  margin-bottom: 3rem;
}
#m_nav .left > ul {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  margin: 0% 6% 0% 10rem;
  width: 80%;
  height: 70%;
  min-height: 400px;
}
#m_nav .left > ul > li {
  line-height: 1.8;
  padding: 0 10px;
  -moz-page-break-inside: avoid;
  -webkit-column-break-inside: avoid;
  break-inside: avoid;
  border-left: 1px solid;
  height: auto;
  width: 32%;
  margin-bottom: 30px;
  overflow: hidden;
}
#m_nav .left > ul > li > a {
  font-size: 1.3em;
  font-weight: bold;
}
#m_nav .left ol a:hover {
  font-weight: bold;
  color: #cd2c48;
}
#m_nav .left .fw-lg {
  font-weight: bold;
  font-size: 1.1em;
}
#m_nav .right {
  padding: 15px;
  width: 100px;
  text-align: center;
  background: #cd2c48;
}

/* 顶部大轮播区域 */
.top_swiper {
  width: 100%;
  min-width: 1180px;
  height: 600px;
  margin-bottom: 45px;
}
.top_swiper .swiper-slide > img {
  object-fit: cover;
  width: 100%;
  height: 600px;
}

.swiper_video {
  width: 100%;
  height: 600px;
}

.top-bullet {
  background-color: #d9d9d9 !important;
  opacity: 1 !important;
}
.top-bullet-active {
  background-color: #cd2c48 !important;
  opacity: 1 !important;
}

/* 更多符号 */
.more_tag {
  display: inline-block;
  font-size: 24px;
  text-align: center;
  color: #2b38af;
  width: 32px;
  height: 32px;
  line-height: 32px;
  transition: transform 0.4s cubic-bezier(0.25, 0.75, 0.5, 1.25);
}
.more_tag:hover {
  background: #2b38af;
  color: white;
  border-radius: 100%;
  transform: scale(1.1);
  line-height: 30px;
}

.sy_tit {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.55rem;
  width: 100%;
  position: relative;
}
.sy_tit .bt {
  position: relative;
  display: flex;
  align-items: center;
  transition: transform 0.4s cubic-bezier(0.25, 0.75, 0.5, 1.25);
}
.sy_tit .bt .z1 {
  font-size: 24px;
  color: #3e3e3e;
  width: 24px;
  margin-right: 10px;
  line-height: 24px;
}
.sy_tit .bt .z2 {
  font-size: 48px;
  color: #3e3e3e;
  font-weight: bold;
}
.sy_tit .bt .z3 {
  font-size: 20px;
  color: #555555;
  line-height: 20px;
}
.sy_tit .bt .line {
  width: 1px;
  height: 38px;
  background: #999999;
  margin: 0 15px;
}
.sy_tit .bt::after {
  content: " ";
  position: absolute;
  top: 0;
  right: -15px;
  width: 10px;
  height: 10px;
  border-right: 4px solid #cd2c48;
  border-top: 4px solid #cd2c48;
}
.sy_tit .bt:hover {
  transform: scale(1.05);
}
.sy_tit .bt-sm {
  transform: scale(0.9);
  margin-top: 30px;
}
.sy_tit .bt-sm:hover {
  transform: scale(0.95);
}

/* 新闻区域 */
.news {
  margin-bottom: 30px;
}
.news_left {
  width: 820px;
  float: left;
}
.news_head {
  height: 64px;
  width: 100%;
  position: relative;
  margin-bottom: 20px;
}
.news_card .img_box {
  overflow: hidden;
}

.news_head > img {
  height: 100%;
}
.news_head > a {
  display: block;
  position: absolute;
  right: 0px;
  top: 50%;
  transform: translateY(5%);
}

/* 新闻card */
.important_news {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}
.important_news > li {
  width: 398px;
  height: 330px;
  position: relative;
}
.important_news li a {
  display: block;
}
.news_card {
  position: relative;
}
.news_card:after {
  content: "";
  display: block;
  width: 0;
  height: 2px;
  background: #cd2c48;
  transition: 0.4s;
  position: absolute;
  top: 100%;
  left: 0;
}
.news_card img {
  width: 100%;
  height: 246px;
  object-fit: cover;
  transition: 0.4s;
}
.news_card .time {
  position: absolute;
  top: 230px;
  right: 0px;
  padding: 4px 12px;
  border-top-left-radius: 16px;
  color: white;
  background: #666666;
}
.news_card .title {
  padding: 15px 0;
  font-size: 16px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.news_content li:hover img {
  transform: scale(1.02);
}
.news_content li:hover .title {
  color: black;
  font-weight: bold;
}
.news_content li:hover .time {
  background: linear-gradient(to right, #cd2c48, #2b38af);
}
.news_content li:hover .news_card:after {
  width: 100%;
}

/* 公告tab */
.news_right {
  width: 330px;
  float: right;
}
.notice {
  height: 364px;
  /* background-color: gray; */
}
.notice_tab {
  position: relative;
  height: 64px;
  margin-bottom: 12px;
}
.notice_tab > a {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(5%);
}
.notice_tab > ul {
  position: absolute;
  display: flex;
  align-items: center;
  left: 0;
  top: 50%;
  transform: translateY(5%);
}
.notice_tab > ul > span {
  font-weight: 600;
  padding: 0 12px;
}
.notice_tab li {
  cursor: pointer;
}
.notice_tab li:hover {
  transform: scale(1.05);
}
.notice_tab li > span,
.notice_tab li > em {
  font-size: 18px;
  font-weight: 600;
  vertical-align: middle;
  color: gray;
}

.notice_tab li.notice_tab_active > span {
  color: black;
}
.notice_tab li.notice_tab_active > em {
  color: #cd2c48;
}
.notice_tab_content {
  display: none;
}
.notice_tab_content_active {
  display: block;
}
.notice_tab_img_no_active {
  display: none;
}
/* 通知公告 */
#notice_announce ul {
  height: 340px;
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  justify-content: space-between;
}
#notice_announce li {
  width: 100%;
  height: 68px;
}
.notice_announce_item {
  display: flex;
  flex-direction: column;
  padding: 4px 8px;
  cursor: pointer;
}
.notice_announce_item:hover {
  color: white;
  background: linear-gradient(to right, #cd2c48, #2b38af);
}
.notice_announce_item > h3 {
  height: 42px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.notice_announce_item > div {
  display: flex;
  align-items: center;
  gap: 12px;
}
.notice_announce_item > div hr {
  height: 1px;
  border: 1px dashed gray;
  border-bottom: 0px;
  flex: 1;
}

/* 学院映像 */
.academy_video_head {
  height: 64px;
  width: 100%;
  position: relative;
  margin-bottom: 30px;
}
.academy_video_head > img {
  height: 45px;
  position: absolute;
  left: 0px;
  top: 50%;
  transform: translateY(5%);
}
.academy_video_head > a {
  display: block;
  position: absolute;
  right: 0px;
  top: 50%;
  transform: translateY(5%);
}
.academy_video_content {
  width: 320px;
}
.academy_video_content > img,
.academy_video_content > video {
  width: 100%;
  height: 100%;
  object-fit: fill;
}

/* 科教成果 */
.kxyj {
  margin-bottom: 30px;
}
.kxyj_head {
  height: 64px;
  width: 100%;
  position: relative;
  margin-bottom: 12px;
}
.kxyj_head > img {
  height: 100%;
  position: absolute;
  left: 0px;
  top: 0px;
}
.kxyj_head > a {
  display: block;
  position: absolute;
  right: 0px;
  top: 50%;
  transform: translateY(5%);
}
/* 科学研究轮播图 */
#kxyj_swiper {
  height: 360px;
}
#kxyj_swiper img {
  height: 320px;
  width: 100%;
  object-fit: cover;
}
.kxyj-bullet {
  background-color: #d9d9d9 !important;
  opacity: 1 !important;
}
.kxyj-bullet-active {
  background-color: #cd2c48 !important;
  opacity: 1 !important;
}

/* 艺周思享绘 */
.yzsxh {
  height: 480px;
  margin-bottom: 30px;
  background: url("../images/yzsxh_bg.png") no-repeat;
  background-position: bottom 0 left 0;
  background-size: 100% 200px;
}
.yzsxh_head {
  height: 64px;
  width: 100%;
  position: relative;
  margin-bottom: 12px;
}
.yzsxh_head > img {
  height: 100%;
  position: absolute;
  left: 0px;
  top: 0px;
}
.yzsxh_head > a {
  display: block;
  position: absolute;
  right: 0px;
  top: 50%;
  transform: translateY(5%);
}
.yzsxh_swiper_content {
  height: 400px;
  display: flex;
  align-items: center;
}
/* 艺周思享绘轮播图 */
#yzsxh_swiper {
  height: 360px;
}
#yzsxh_swiper img {
  height: 320px;
}
/* 居中轮播图 */
#yzsxh_swiper .swiper-slide {
  text-align: center;
  /* display: flex;
  justify-content: center;
  align-content: center;
  padding-top: 4px; */
}
.yzsxh-bullet {
  background-color: #d9d9d9 !important;
  opacity: 1 !important;
}
.yzsxh-bullet-active {
  background-color: #cd2c48 !important;
  opacity: 1 !important;
}

/* 先锋人物 */
.xfrw {
  width: 100%;
  min-width: 1180px;
  height: 480px;
  background: url("../images/xfrw_bg.png") no-repeat;
  background-position: bottom 0 left 0;
  /* background-size: 100% 200px; */
  margin-bottom: 30px;
}
.xfrw_head {
  height: 64px;
  width: 100%;
  position: relative;
  margin-bottom: 12px;
}
.xfrw_head > img {
  height: 100%;
  position: absolute;
  left: 0px;
  top: 0px;
}
.xfrw_head > a {
  display: block;
  position: absolute;
  right: 0px;
  top: 50%;
  transform: translateY(5%);
}
/* 先锋人物轮播图 */
.xfrw_swiper_content {
  height: 400px;
  display: flex;
  align-items: center;
}
#xfrw_swiper {
  height: 360px;
}
/* #xfrw_swiper img {
  height: 320px;
  width: 100%;
  object-fit: cover;
} */
#xfrw_swiper .swiper-slide {
  /* width: 70%; */
  display: flex;
  justify-content: center;
  align-content: center;
}
.xfrw_card {
  width: 240px;
  height: 320px;
  /* background-color: gray; */
  position: relative;
  transition: transform 0.4s cubic-bezier(0.25, 0.75, 0.5, 1.25);
}
.xfrw_card:hover {
  transform: translateY(-2%);
}
.xfrw-bullet {
  background-color: #d9d9d9 !important;
  opacity: 1 !important;
}
.xfrw-bullet-active {
  background-color: #cd2c48 !important;
  opacity: 1 !important;
}

.xfrw_card_img {
  position: absolute;
  top: 0;
  right: 0px;
  height: 280px;
  width: 220px;
  object-fit: cover;
  background-color: transparent;
  border-top-left-radius: 25px;
  border-bottom-right-radius: 25px;
  z-index: 100;
}
.xfrw_card_info {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 280px;
  width: 220px;
  background-color: #cd2c48;
  border-top-left-radius: 25px;
  border-bottom-right-radius: 25px;
}
.xfrw_card_info > div {
  position: absolute;
  bottom: 6px;
  left: 20px;
  color: #fff;
}
.xfrw_card_info > div > em {
  font-size: 20px;
  font-weight: 600;
  padding-right: 8px;
}

/* 优秀校友 */
.yxxy {
  width: 100%;
  min-width: 1180px;
  height: 480px;
  background: url("../images/yxxy_bg.jpg") no-repeat;
  background-position: bottom 0 left 0;
}
.yxxy_head {
  height: 64px;
  width: 100%;
  position: relative;
  margin-bottom: 12px;
}
.yxxy_head > img {
  height: 100%;
  position: absolute;
  left: 0px;
  top: 0px;
}
.yxxy_head > a {
  display: block;
  position: absolute;
  right: 0px;
  top: 50%;
  transform: translateY(5%);
}
.yxxy_swiper_content {
  height: 400px;
  display: flex;
  align-items: center;
}
/* 优秀校友轮播图 */
#yxxy_swiper {
  width: 100%;
  height: 360px;
}
#yxxy_swiper .swiper-slide {
  display: flex;
  justify-content: center;
  align-content: center;
}
.yxxy_card {
  width: 160px;
  height: 200px;
  /* background-color: gray; */
  position: relative;
}
.yxxy_card img {
  width: 100%;
  border-radius: 50%;
}
.yxxy_card div {
  color: black;
  text-align: center;
  padding: 4px 0;
}
#yxxy_swiper .swiper-slide:nth-child(odd) .yxxy_card {
  transform: translateY(100px);
}
/* #yxxy_swiper .swiper-slide:nth-child(even) {
} */
.yxxy-bullet {
  background-color: #d9d9d9 !important;
  opacity: 1 !important;
}
.yxxy-bullet-active {
  background-color: #cd2c48 !important;
  opacity: 1 !important;
}

/* 页面底部 */
.footer {
  width: 100%;
  min-width: 1180px;
  /* height: 316px; */
  /* background-color: lightblue; */
  padding-top: 30px;
  background: url("../images/footer_bg.png") no-repeat,
    linear-gradient(to right, #cd2c48, #2b38af);
  background-position: bottom 0 left 0;
  background-size: 100% 100%;
}
.footer_top {
  width: 100%;
  height: 50px;
  /* background-color: blue; */
  display: flex;
  justify-content: space-between;
}
.footer_top_left {
  display: flex;
  justify-content: space-between;
  gap: 80px;
}
.footer_top_right {
  line-height: 50px;
  color: #d9d9d9;
}
.footer_top_right a {
  color: #d9d9d9;
}

.footer_top_right span:nth-child(even) {
  padding: 0 12px;
}

.footer_mid {
  width: 100%;
  height: 200px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  /* margin: 30px auto; */
}
.footer_mid_center span:nth-child(1) {
  color: #e8e6ec;
}
.footer_mid_center span:nth-child(2) {
  color: white;
}
.footer_mid_right div {
  float: right;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #d9d9d9;
  padding-top: 30px;
}
.footer_mid_right div:nth-child(2) {
  margin-right: 20px;
}
.footer_mid_right img {
  width: 90px;
  height: 90px;
}
.footer_mid_right p {
  text-align: center;
}

.footer_cpy {
  height: 50px;
  width: 100%;
  text-align: center;
  line-height: 50px;
  color: #e8e6ec;
  background-color: rgb(0, 0, 0, 0.2);
}

/* drop菜单 */
.dropdown {
  width: 200px;
  position: relative;
}
.dropdown_menu {
  position: absolute;
  cursor: pointer;
  height: 50px;
  line-height: 50px;
  width: 200px;
  border: 1px solid #e8e6ec;
  display: flex;
  justify-content: space-around;
  align-items: center;
  color: #d9d9d9;
}
.dropdown_menu img {
  width: 32px;
  height: 32px;
}
.dropdown_content {
  position: absolute;
  width: 400px;
  top: 54px;
  left: 0px;
  /* display: flex; */
  flex-wrap: wrap;
  gap: 5px;
  justify-content: space-between;
  display: none;
  background-color: rgb(0, 0, 0, 0.75);
  border-radius: 5px;
  padding: 12px;
  /* border: 1px solid black; */
}
.dropdown_content a {
  padding: 5px 20px;
  color: #d9d9d9;
  font-size: 14px;
  /* background: linear-gradient(to right, #CD2C48, #2B38AF); */
}
.dropdown_content a:hover {
  background: #cd2c48;
}
/* 显示下拉菜单（当用户点击下拉菜单按钮时，使用 JS 将此类添加到 .dropdown-content 容器中） */
.dropdown_content_show {
  display: flex;
}
.biger {
  transition: transform 0.4s cubic-bezier(0.25, 0.75, 0.5, 1.25);
}
.biger:hover {
  transform: scale(1.06);
}

/*媒体查询*/
@media (max-width: 650px) {
  .page_w {
    width: 100%;
  }
  .header_logo img {
    height: 60px;
  }
  .header_nav > .navbar {
    display: none;
  }
  #m_nav {
  }
  #m_nav .left {
    margin: 0;
    height: 90vh;
    overflow-x: hidden;
    overflow-y: scroll;
  }
  #m_nav .left .logo {
    padding-left: 0;
    margin-bottom: 15px;
  }
  #m_nav .left > ul {
    margin: 0;
    width: 35%;
    height: 100%;
  }
  #m_nav .left > ul > li {
    width: 25%;
  }
  #m_nav .right {
    width: 60px;
    flex-shrink: 0;
  }
}

/* 列表页背景色 */
.lby_bg {
  background-color: #f1f1f1;
  min-height: 600px;
  padding-top: 20px;
  padding-bottom: 30px;
}
/* 头部区域 */
.lby_heading {
  display: flex;
  gap: 54px;
  padding: 12px 0;
}
/* 头部-左边页面标题 */
.lby_title {
  width: 274px;
  display: flex;
  justify-content: center;
  gap: 8px;
}
.lby_title > span {
  line-height: 35px;
  font-size: 16px;
}
.lby_title > span:nth-child(1) {
  color: #333;
}
/* 头部右边菜单路径 */
.lby_menu_path {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}
.lby_menu_path > span {
  line-height: 35px;
}
/* 列表页导航和内容区域 */
.lby {
  display: flex;
  gap: 54px;
}
/* 左边导航菜单 */
.lby_left {
  width: 274px;
}
.lby_left > ul {
  background-color: white;
  padding: 12px 0;
}
.lby_left > ul > li > a {
  display: block;
  width: 100%;
  height: 54px;
  line-height: 54px;
  font-size: 16px;
  text-align: center;
  color: #333;
}
/* 左边导航高亮 */
.lby_left > ul > li.lby_left_active {
  background: linear-gradient(to right, #cd2c48, #2b38af);
}
.lby_left > ul > li.lby_left_active > a {
  color: white;
}
/* 右边内容 */
.lby_right {
  flex: 1;
  min-height: 600px;
  background-color: white;
  padding: 64px;
}