/* 通用样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  min-height: 100vh;
  overflow-x: hidden;
  font-family: "Microsoft Yahei", sans-serif;
  background: #FFFFFF;
}
img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
ul, li {
  list-style: none;
}
a {
  text-decoration: none;
  color: inherit;
}

/* 导航 */
.index_navigation {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
  width: 100%;
  height: 3.15rem;
  transition: all 0.3s ease;
  background-image: url(./img/bj2.jpg);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 100% 100%;
}
.nav_content {
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}
/* .nav-logo {
  width: 15.3rem;
  padding-top: 0.69rem;
  margin-bottom: 0.7rem;
} */
.nav-logo{
	width: 15.3rem;
	display: flex;
	align-items: center;
	padding-top: 0.36rem;
}
.nav-logo img{
	width: 3.74rem;
	height:0.95rem;
	margin-right: 0.24rem;
}
.nav-logo div{
	font-family: Source Han Serif CN, Source Han Serif CN;
	font-weight: 500;
	font-size: 0.48rem;
	color: #007A3F;
}
.Educational{
	width: 15.3rem;
	font-family: Source Han Serif CN, Source Han Serif CN;
	font-weight: 400;
	font-size: 0.48rem;
	color: #DFAE69;
	text-align: right;
	margin-top: 0.1rem;
	margin-bottom: 0.41rem;
}
.custom-nav {
  width: 15.3rem;
  display: flex;
  justify-content:space-between;
  align-items: center;
  flex-wrap: nowrap;
  position: relative;
  padding-bottom: 0.2rem;
}
.custom-nav > li {
  position: relative;
  height: 0.40rem;
  display: flex;
  align-items: center;
  cursor: pointer;
}
.custom-nav > li > a {
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 500;
  font-size:0.28rem;
  color: #333333;
  transition: color 0.3s ease;
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 2px;
}
.custom-nav > li > a:hover,
.custom-nav > li.active > a {
 color: #007A3F;
}
/* 一级导航下划线hover效果 */
.custom-nav > li > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: #007A3F;
  border-radius: 1px;
  transform: scaleX(0);
  transition: transform 0.3s ease;
}
.custom-nav > li > a:hover::after,
.custom-nav > li.active > a::after {
  transform: scaleX(1);
}
/* 二级下拉菜单 */
.custom-nav .sub-nav {
  position: absolute;
  top: calc(100% );
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.8);
  border-radius: 4px;
  padding: 10px 0;
  min-width: 120px;
  display: none;
  z-index: 9999;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* 三角箭头 */
/* .custom-nav .sub-nav::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 8px solid rgba(255, 255, 255, 0.8);
} */
.custom-nav .sub-nav li {
  text-align: center;
  padding: 6px 15px;
}
.custom-nav .sub-nav li a {
  font-family: Source Han Serif CN, Source Han Serif CN;
  font-weight: 500;
  font-size: 0.16rem;
  color: #000000;
  transition: background 0.3s ease, color 0.3s ease;
  display: block;
  border-radius: 2px;
}
.custom-nav .sub-nav li a:hover {
  font-family: Source Han Serif CN, Source Han Serif CN;
  font-weight: 500;
  font-size: 0.16rem;
  color: #007A3F;
}
/* 鼠标悬浮显示二级菜单 */
.custom-nav > li:hover .sub-nav {
  display: block;
}
/* 中间主体 */
.main-container{
	width: 100%;
	/* height:7.2rem; */
	background: rgba(255, 255, 255, 1);
	margin-top: 3.15rem;
	
}
.academicexchange{
	width: 15.3rem;
	/* display: flex;
	justify-content:space-between;
	align-items: center; */
	margin: 0 auto;
	padding: 0.64rem 0;
	
}
.exchange{
	width: 5.06rem;
	height: 0.47rem;
	background-image: url(./img/bj1.png);
	background-repeat: no-repeat;
	background-position: center center;
	background-size: 100% 100%;
	text-align: center;
	line-height:  0.47rem;
	font-family: Source Han Sans CN, Source Han Sans CN;
	font-weight: bold;
	font-size: 0.32rem;
	color: #1A1A1A;
	margin: 0 auto;
}
/* =====================学术交流轮播模块 ===================== */
.exchange-banner-wrap {
  width: 15.3rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-top: 0.48rem;
  gap: 0.8rem;
}
/* 左侧轮播区域 */
.banner-left {
  width: 6.54rem;
}
.banner-box {
  position: relative;
  width: 100%;
  height: 4.27rem;
  overflow: hidden;
}
.banner-list {
  width: 100%;
  height: 100%;
  display: flex;
  transition: transform 0.4s ease;
}
.banner-item {
  width: 100%;
  height: 100%;
  flex-shrink: 0;
}
.banner-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
/* 底部标题 */
.banner-title {
  margin-top: 0.3rem;
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 400;
  font-size: 0.24rem;
  color: #333333;
  position: relative;
  width: 100%;
  height: 0.3rem; /* 固定行高 */
  line-height: 0.3rem;
}
/* 文字加省略号 */
.banner-title .title-text {
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
/* 绿条正常显示，不会被切掉！ */
.banner-title::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.16rem;
  width: 0.48rem;
  height: 0.06rem;
  background: #007A3F;
  border-radius: 0.08rem;
}

/* 轮播指示点（可点击） */
.banner-dots {
  position: absolute;
  bottom: 0.3rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.2rem;
  z-index: 10;
}
.dot {
  width: 0.2rem;
  height: 0.2rem;
  background: rgba(255,255,255,0.6);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
}
.dot.active {
  background: #fff;
}

/* 右侧列表区域 */
.banner-right {
  width: 7.2rem;
}

/* 右侧列表项*/
.banner-right-list li {
  width: 7.2rem;      /* 固定宽 */
  height: 1.24rem;    /* 固定高 */
  background-image: url(./img/icon.png); 
  background-repeat: no-repeat;
  background-size: cover; /* 铺满 */
  background-position: center; /* 居中 */
  
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding-left: 0.3rem;
  box-sizing: border-box;
  margin-bottom: 0.3rem;
}

/* 日期 */
.banner-right-list li .date {
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: bold;
  font-size: 0.28rem;
  color: #DFAE69;
  margin-bottom: 0.06rem;
  white-space: nowrap;
}

/* 标题超出省略 */
.banner-right-list li a {
  width: 100%;
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 400;
  font-size: 0.24rem;
  color: #1A1A1A;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
/* 更多按钮 */
.more-link {
  text-align: right;
  margin-top: 0.29rem;
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 400;
  font-size: 0.2rem;
  color: #007A3F;
}

/*  */
.Dynamic_Announcement{
	width: 100%;
	/* height: 5.14rem; */
	background: #F7F7F7;
	border-radius: 0px 0px 0px 0px;
	background-image: url(./img/bj3.jpg);
	  background-repeat: no-repeat;
	  background-position: center center;
	  background-size: cover;
	  padding: 0.48rem 0;
}

.da-wrap {
  width: 15.3rem;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;

}
.da-left,.da-right {
 width: 6.4rem;
}


/* 基地动态标题  */
.da-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.6rem;
  width: 100%;
}

/* 左侧标题整体*/
.color-text {
  /* 祥云背景图 */
  background-image: url(./img/notice_bg.png);
  background-repeat: no-repeat;
  background-position: left center;
  background-size: auto 100%;
  padding-left: 0.7rem; 
  
  position: relative;
  left: -0.7rem;
}
.color-text div{
	position: relative;
	top: 0.16rem;
}
/* 基地：黑色 */
.color-text {
 font-family: Source Han Sans CN, Source Han Sans CN;
 font-weight: 500;
 font-size: 0.32rem;
 color: #DFAE69;
}

.colorspan1 {
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 500;
  font-size: 0.32rem;
  color: #1A1A1A;
}

/* 右侧更多按钮 */
.da-more {
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 400;
  font-size: 0.2rem;
  color: #007A3F;
  font-weight: normal;
}
/* ========== 左侧基地动态列表 ========== */
.da-left-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.24rem;
  position: relative;
  padding-left: 0.35rem;
  
}
/* 左侧黑色圆点 */
.da-left-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 0.16rem;
  height: 0.16rem;
  background: #000;
  border-radius: 50%;
}
.da-left-list li a {
  flex: 1;
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 400;
  font-size: 0.24rem;
  color: #000000;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.da-left-list li .da-date {
  font-size: 0.24rem;
  color: #999;
  white-space: nowrap;
  margin-left: 0.3rem;
}

/* ========== 右侧通知公告========== */
.da-right-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
}
/* 右侧每个公告卡片背景图  */
.da-right-item {
  padding: 0.16rem ;
  border-radius: 0.1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  width: 3.24rem;
  height: 1rem;
  background: #FFFFFF;
  box-shadow: 0px 3px 6px 1px rgba(0,0,0,0.16);
  border-radius: 0.08rem;
}
.da-right-item a {
  display: block;
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 400;
  font-size: 0.24rem;
  color: #1A1A1A;
  /* line-height: 1.4; */
  /* 两行文字超出省略 */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
/* 公告前面小图标 */
.da-right-item a::before {
  content: '';
  display: inline-block;
  width: 0.22rem;
  height: 0.22rem;
  background-image: url(./img/gonggao.png);
  background-size: contain;
  background-repeat: no-repeat;
  margin-right: 0.12rem;
  vertical-align: middle;
}
.Theoretical_Frontiers{
	width: 100%;
	height: 9.5rem;
	background: #FFFFFF;
	background-image: url(./img/bj4.jpg);
	background-repeat: no-repeat;
	background-position: center center;
	background-size: cover;
	padding-top: 0.7rem;
}
.Theoretical_Frontiers .exchange {
  width: 5.06rem;
  height: 0.47rem;
  background-image: url(./img/bj1.png);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 100% 100%;
  text-align: center;
  line-height: 0.47rem;
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: bold;
  font-size: 0.32rem;
  color: #1A1A1A;
  margin: 0 auto;
}

/* 外层容器：用来放左右箭头 */
.tf-wrap {
  width: 15.3rem;
  margin: 0.48rem auto 0;
  position: relative;
}

/* 箭头按钮：定位在内容外 */
.tf-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 0.71rem;
  height: 1.24rem;
  cursor: pointer;
  z-index: 10;
}
.tf-prev {
  left: -1.2rem;
}
.tf-next {
  right: -1.2rem;
}
.tf-arrow img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* 卡片列表容器 */
.tf-list-wrap {
  overflow: hidden;
  width: 100%;
}
.tf-list {
  display: flex;
  justify-content: space-between;
 
  transition: transform 0.4s ease;
}

/* 单个卡片 */
.tf-item {
  width: 3.24rem;
  height: 3.64rem;
  background: #FFFFFF;
  box-shadow: 0px 3px 6px 1px rgba(0,0,0,0.16);
  border-radius: 0.08rem;
  overflow: hidden;
}
.tf-img {
  width: 100%;
  height: 2.34rem;
  display: flex;
  justify-content: center;
  padding-top: 0.16rem;
}
.tf-img img {
  width: 2.92rem;
  height: 100%;
  object-fit: cover;
  
}
.tf-text {
  padding: 0.2rem;
}
.tf-text p {
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 400;
  font-size: 0.2rem;
  color: #1A1A1A;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.friendlylink{
	width: 15.3rem;
	margin: 0.48rem auto 0;
}

.friend-link-content {
  width: 15.23rem;
  height: 1.87rem;
  display: flex;
  flex-wrap: wrap;
  /* background: rgba(255, 247, 237, 0.6); */
  padding: 0.3rem ;
  margin-top: 0.7rem;
  background-image: url(./img/bj5.jpg);
  background-repeat: no-repeat;
  background-position: left center;
  background-size: auto 100%;
}

.friend-link-item {
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 400;
  font-size: 0.2rem;
  color: #000000;
  margin-right: 0.6rem;
  margin-bottom: 0.36rem;
}
/* 底部 */
.footer-wrap {
  width: 100%;
  height: 2.63rem;
 
  background-image: url(./img/bj6.jpg);
  background-repeat: no-repeat;
  background-position: center center;
  background-size: 100% 100%;
}
.logo{
  width: 14.40rem;
  margin: 0 auto; 
  padding-top: 0.36rem;
  display: flex;
}
	
.logo div{
	font-family: Source Han Serif CN, Source Han Serif CN;
	font-weight: 500;
	font-size: 0.48rem;
	color: #007A3F;
}
.footer-logo {
  width: 3.74rem;
  height: 0.95rem;     
  margin-right: 0.2rem;     
  object-fit: contain;
}
.contact-info {
	width: 14.40rem;
	margin: 0 auto;   
  color: #fff;
  font-family: Source Han Sans CN;
}
.contact-title {
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 400;
  font-size: 0.2rem;
  color: #666666;
  margin-bottom: 0.2rem;
  letter-spacing: 0.06rem;
  display: flex;
  align-items: center;
  margin-top: 0.35rem;
}
.contact-title img{
	width: 0.19rem;
	height: 0.19rem;
}
.contact-detail{
	display: flex;
}
.contact-detail p {
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 400;
  font-size: 0.16rem;
  color: #666666;
  white-space: nowrap;
  margin-right: 0.8rem;
}

/* 底部版权信息 */
.copyright {
  width: 100%;
  height:0.64rem;
  background: rgba(0, 122, 63, 1);
  border-radius: 0px 0px 0px 0px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: Source Han Sans CN, Source Han Sans CN;
  font-weight: 300;
  font-size: 0.16rem;
  color: rgba(255, 255, 255, 1);
}
.copyright p{
	margin-left: 0.2rem;
	margin-right: 0.2rem;
}