.banner {
  width: 1200px;
}

.banner_title {
  display: flex;
  flex-direction: column;
}

.banner_title_item {
  font-size: 68px;
  font-weight: bold;
  font-family: Arial, Helvetica, sans-serif;
  color: #fff;
  margin: 0;
  margin-bottom: 50px;
}

.banner_subtitle {
  font-size: 20px;
  font-weight: bold;
  font-family: Arial, Helvetica, sans-serif;
  color: #563d7c;
  margin: 0;
}

.container {
  width: 1200px;
  max-width: 1200px;
  padding: 0;
  padding-bottom: 100px;
  /* background-color: #EEF7FF; */
}

.about {
  width: 100%;
  height: 100vh;
  background-image: url(../img/index/news_bg1.jpg);
  background-size: cover;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.about_box {
  display: flex;
  justify-content: space-between;
  width: 1200px;
  height: 100%;
}

.about_box_left {
  width: 35%;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.about_box_left_title {
  margin-top: 150px;
  font-size: 36px;
  font-weight: bold;
  color: rgba(1, 110, 226, 1);
  font-family: Arial, Helvetica, sans-serif;
  margin-bottom: 20px;
}

.about_box_left_remark {
  font-size: 14px;
  color: #fff;
  line-height: 1.5;
  text-align: justify;
  margin-bottom: 80px;
  padding: 10px 20px;
  background-color: rgba(1, 110, 226, 1);
  border-radius: 5px;
  width: fit-content;
}

.about_box_right {
  width: 45%;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

.about_box_right_info {
  margin-top: 150px;
  font-size: 16px;
  color: #333;
  line-height: 1.8;
  text-align: justify;
}

.about_box_right_bottom {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-gap: 30px;
  margin-top: 100px;
}

.about_box_right_bottom_item_num p {
  font-size: 18px;
  font-weight: bold;
  color: rgba(1, 110, 226, 1);
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  /* 文字倾斜 */
  font-style: italic;
  margin-bottom: 10px;
}

.about_box_right_bottom_item_num span {
  font-size: 13px;
  color: #999;
  line-height: 1.5;
  text-align: justify;
}

.news {
  width: 100%;
  height: 100vh;
  /* background-image: url(../img/index/bg1.png) !important;
  background-size: cover; */
  background-color: rgba(1, 110, 226, 0.05);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.news_title,
.community_title {
  width: 1200px;
  padding-top: 100px;
  margin-bottom: 80px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.community_title span.community_title_btn,
.news_title span.news_title_btn {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(50%);
  padding: 10px 20px;
  border: 1px solid rgba(1, 110, 226, 1);
  color: rgba(1, 110, 226, 1);
  font-size: 13px;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
}

.community_title span.community_title_btn:hover,
.news_title span.news_title_btn:hover {
  background-color: rgba(1, 110, 226, 1);
  color: #fff;
  cursor: pointer;
  transition: all 0.3s ease;
}


.news_title span,
.community_title span {
  font-size: 36px;
  font-weight: bold;
  color: rgba(1, 110, 226, 1);
  font-family: Arial, Helvetica, sans-serif;
}

span.news_title_en,
span.community_title_en {
  font-size: 24px;
  font-weight: bold;
  color: #666;
  font-family: Arial, Helvetica, sans-serif;
  position: relative;
  width: fit-content;
}

span.news_title_en::before,
span.community_title_en::before {
  content: "";
  position: absolute;
  width: 150px;
  height: 5px;
  /* 渐变背景 */
  background: linear-gradient(to right, rgba(1, 110, 226, 0), rgba(1, 110, 226, 1));
  top: 50%;
  left: 100px;
  transform: translateY(-50%);
}


.container_news {
  width: 1200px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-gap: 20px;
}

.container_news_item {
  display: flex;
  flex-direction: column;
  width: 100%;
  min-width: 0;
  overflow: hidden;
}

.container_news_item:first-child {
  grid-column: span 2;
  /* 占两列 */
}


.container_news_item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: all 0.3s ease;
}

.container_news_item img:hover {
  transform: scale(1.05);
  transition: all 0.3s ease;
}

.container_news_item .p-head {
  width: 100%;
  font-size: 16px;
  font-weight: bold;
  color: #fff;
  margin-bottom: 5px;
  padding: 10px;
  text-align: justify;
  background-color: rgba(1, 110, 226, 1);
  /* 只显示一行，溢出使用省略号 */
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;

}

.container_news_item p {
  width: 100%;
  font-size: 14px;
  color: #333;
  text-align: justify;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  /* 显示 2 行 */
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.container_box {
  display: flex;
}

.container_box_left {
  width: 60%;
  flex-shrink: 0;
  margin-right: 20px;
}

.container_box_left img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.course {
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-image: url(../img/index/bg1.png) !important;
  background-size: cover;
  background-repeat: no-repeat !important;
  position: relative;
  user-select: none;
}

.course::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  /* 从上到下的渐变：上面透明，下面不透明 */
  background: linear-gradient(to bottom, rgba(1, 110, 226, 1) 30%, rgba(1, 110, 226, 0) 100%);
  pointer-events: none;
  /* 不影响交互 */
}

.course_box {
  width: 100%;
  z-index: 1;
  display: flex;
  overflow-x: auto;
  cursor: grab;
  /* 默认小手 */
}

.course_box:active {
  cursor: grabbing;
  /* 按住时抓取效果 */
}

.course_title {
  width: 1200px;
  margin-bottom: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 1;
  font-size: 36px;
  font-weight: bold;
  color: rgba(255, 255, 255, 1);
  font-family: Arial, Helvetica, sans-serif;
  user-select: none;
}

.course_subtitle {
  font-size: 20px;
  color: rgba(255, 255, 255, .5);
  font-family: Arial, Helvetica, sans-serif;
  margin-bottom: 60px;
  z-index: 1;
  user-select: none;
}

.course_box_item {
  width: 300px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  padding: 50px 30px;
  background-color: rgba(255, 255, 255, .1);
  margin-right: 50px;
  transition: all 0.3s ease !important;
  user-select: none;
}

.course_box_item_year {
  font-size: 60px;
  font-weight: bold;
  color: rgba(1, 110, 226, 1);
  font-family: Arial, Helvetica, sans-serif;
  margin-bottom: 20px;
  user-select: none;
}

.course_box_item_title {
  font-size: 20px;
  font-weight: bold;
  color: rgba(255, 255, 255, .6);
  font-family: Arial, Helvetica, sans-serif;
  margin-bottom: 20px;
  user-select: none;
}

.course_box_item_subtitle {
  font-size: 14px;
  color: rgba(255, 255, 255, .5);
  line-height: 1.5;
  text-align: justify;
  user-select: none;
}

.course_box_item:hover {
  background-color: rgba(255, 255, 255, 1);
  cursor: grab;
  transition: all 0.3s ease;
}

.course_box_item:active {
  cursor: grabbing;
}

.course_box_item:hover .course_box_item_title {
  color: rgba(1, 110, 226, 1);
}

.course_box_item:hover .course_box_item_subtitle {
  color: rgba(51, 51, 51, 1);
}

.container_box_right {
  color: #fff;
}


.community {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.community_box {
  width: 1200px;
  display: flex;
  align-items: center;
}

.community_box_list {
  width: 300px !important;
  flex-shrink: 0;
  display: flex;
  flex-direction: row;
  transform: scale(1);
  transition: all 0.8s ease;
  position: relative;
}

.community_box_list_item {
  display: flex;
  flex-direction: column;
  justify-content: center;
  background-color: #f8f8f8;
  padding: 80px 30px;
}

.community_box_list_item_number {
  font-size: 60px;
  font-weight: bold;
  color: rgba(1, 110, 226, .1);
  font-family: Arial, Helvetica, sans-serif;
  margin-bottom: 20px;
}

.community_box_list_item_title {
  font-size: 20px;
  font-weight: bold;
  color: #333;
  font-family: Arial, Helvetica, sans-serif;
  margin-bottom: 40px;
  position: relative;
}

.community_box_list_item_title::before {
  content: "";
  position: absolute;
  width: 50px;
  height: 4px;
  background-color: rgba(1, 110, 226, 1);
  left: 0;
  bottom: -10px;
}


.community_box_list_item_text {
  font-size: 14px;
  color: #666;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
  text-align: justify;
}

.community_box .swiper-slide-active {
  width: 600px !important;
  flex-shrink: 0;
  display: flex;
  flex-direction: row;
  background-color: rgba(1, 110, 226, 1);
  /* padding: 0 30px;
  padding-bottom: 30px;
  border: 1px solid rgba(1, 110, 226, 1);
  box-sizing: border-box; */
  transform: scale(1);
  transition: all 0.8s ease;
  z-index: 99;
}

.community_box_list_img {
  width: 100%;
  height: 100%;
  font-size: 0;
  overflow: hidden;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
  opacity: 0.05;
}

.community_box_list_img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.swiper-slide-active .community_box_list_item {
  width: 300px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 30px;
  padding-right: 0;
  background-color: rgba(0, 0, 0, 0);
}

.swiper-slide-active .community_box_list_item_title::before {
  background-color: rgba(255, 255, 255, 1);
}

.swiper-slide-active .community_box_list_item_number {
  color: rgba(255, 255, 255, .1);
}

.swiper-slide-active .community_box_list_item_title {
  color: #fff;
}

.swiper-slide-active .community_box_list_item_text {
  color: rgba(255, 255, 255, .8);
}

.swiper-slide-active .community_box_list_item_btn {
  width: 100%;
  padding: 10px 0;
  border: 1px solid #fff;
  color: #fff;
  font-size: 13px;
  font-weight: bold;
  text-align: center;
  border-radius: 5px;
  cursor: pointer;
  margin-top: 20px;
}

.collaboration {
  /* width: 100vw; */
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.collaboration_box {
  width: 100%;
  height: 100%;
  padding-top: 90px;
  overflow: hidden;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  position: relative;
}

.collaboration_box_item {
  font-size: 0;
}

.collaboration_box_item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 0.3s ease;
  /* 加滤镜 变暗 */
  filter: brightness(0.5);
}

.collaboration_box_item img:hover {
  filter: brightness(1);
  transition: all 0.3s ease;
}

.collaboration_box_bottom {
  position: absolute;
  /* 上下左右居中 */
  bottom: 50%;
  left: 50%;
  transform: translateX(-50%) translateY(50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 30px 60px;
  background-color: rgba(255, 255, 255, .5);
  backdrop-filter: blur(2px);
  border-radius: 2px;
}

.collaboration_box_bottom_title {
  font-size: 36px;
  font-weight: bold;
  color: rgb(255, 255, 255);
  font-family: Arial, Helvetica, sans-serif;
}

.collaboration_box_bottom_btn {
  padding: 10px 20px;
  border: 1px solid rgb(255, 255, 255);
  color: rgb(255, 255, 255);
  font-size: 13px;
  font-weight: bold;
  text-align: center;
  transition: all 0.3s ease;
  margin-top: 30px;
}

.collaboration_box_bottom_btn:hover {
  background-color: rgb(255, 255, 255);
  color: rgba(1, 110, 226, 1);
  cursor: pointer;
  transition: all 0.3s ease;
}