.banner {
  width: 100%;
  max-height: 350px;
  margin-bottom: 20px;
}
.banner img {
  width: 100%;
  height: 350px;
}
.about-box .right .video-list {
  padding: 30px 40px 60px 40px;
}
.about-box .right .video-list a {
  display: block;
  background-color: #fff;
  float: left;
  margin: 0 7px;
  margin-bottom: 10px;
}
.about-box .right .video-list a video {
  width: 264px;
  height: 200px;
}
.about-box .right .video-list a .pic {
  width: 2.64rem;
  height: 2rem;
}
.about-box .right .video-box {
  width: 100%;
  position: relative;
}
.about-box .right .video-box video {
  width: 1024px;
  height: 576px;
}
.about-box .right .video-box .play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
}
.about-box .right .certificate-box {
  padding: 30px 40px 0 40px;
}
.about-box .right .certificate-box .item {
  float: left;
  display: block;
  position: relative;
  margin: 0 7px;
  margin-bottom: 20px;
}
.about-box .right .certificate-box .item .pic {
  width: 2.64rem;
  height: 3.7rem;
}
.about-box .right .certificate-box .item .title {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 2.64rem;
  height: 50px;
  background: #333333;
  opacity: 0.6;
  padding: 0 10px;
  text-align: center;
  font-size: 18px;
  font-weight: bold;
  color: #FFFFFF;
  line-height: 50px;
}
.about-box .right .news-list {
  padding: 30px 50px;
}
.about-box .right .news-list .item {
  margin-bottom: 20px;
}
.about-box .right .news-list .item .pic {
  width: 2.3rem;
  height: 1.54rem;
}
.about-box .right .news-list .item .right {
  width: 8.6rem;
}
.about-box .right .news-list .item .right .title {
  font-size: 20px;
  font-weight: bold;
  margin-bottom: 15px;
}
.about-box .right .news-list .item .right p {
  font-size: 14px;
  color: #666666;
  line-height: 24px;
  -webkit-line-clamp: 2!important;
}
.about-box .right .news-list .item .right .date {
  margin-bottom: 9px;
}
.about-box .right .news-list .item .right .date span {
  margin-left: 6px;
  font-size: 14px;
  color: #999999;
}
.about-box .right .news-list .item .right .date img {
  margin-top: 1px;
}
.about-box .right .news-list .item .right .more {
  font-size: 16px;
  color: #017AD5;
}
.timeline-box .main-title {
  font-size: 30px;
  margin-top: 40px;
  margin-bottom: 25px;
}
.timeline-box .year {
  margin-top: 25px;
  position: relative;
  height: 37px;
}
.timeline-box .year img {
  width: 37px;
  height: 37px;
}
.timeline-box .year span {
  position: absolute;
  font-size: 24px;
  font-weight: bold;
  color: #017AD5;
  line-height: 37px;
  left: -105px;
}
.timeline-box .timeline ul {
  display: block;
  width: 680px;
  padding-top: 40px;
  background: url(../images/about/timeline_bg.png) center repeat-y;
}
.timeline-box .timeline ul li:hover {
  background: url(../images/about/time_dot_active.png) center no-repeat;
}
.timeline-box .timeline ul li:hover .item {
  background: #017AD5;
  color: #FFFFFF;
}
.timeline-box .timeline ul li:hover .item::before {
  content: "";
  width: 0;
  height: 0;
  position: absolute;
  top: 50%;
  transform: translate(0, -50%);
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
}
.timeline-box .timeline ul li:hover .item .title {
  position: relative;
}
.timeline-box .timeline ul li:hover .item .title::after {
  position: absolute;
  content: "";
  width: 19px;
  height: 21px;
  background: url(../images/about/date_active.png) center no-repeat;
  top: 50%;
  margin-left: 10px;
  transform: translate(0, -50%);
}
.timeline-box .timeline ul li:hover:nth-child(odd) .item::before {
  left: -20px;
  border-left: 10px solid transparent;
  border-right: 10px solid #017AD5;
}
.timeline-box .timeline ul li:hover:nth-child(even) .item::before {
  right: -20px;
  border-left: 10px solid #017AD5;
  border-right: 10px solid transparent;
}
.timeline-box .timeline ul li {
  display: flex;
  align-items: center;
  cursor: pointer;
  height: 87px;
  background: url(../images/about/time_dot.png) center no-repeat;
}
.timeline-box .timeline ul li:nth-child(odd) {
  padding-left: 390px;
  padding-right: 0;
}
.timeline-box .timeline ul li:nth-child(odd) .item::before {
  left: -20px;
  border-left: 10px solid transparent;
  border-right: 10px solid #fff;
}
.timeline-box .timeline ul li:nth-child(even) {
  padding-left: 0;
  padding-right: 390px;
}
.timeline-box .timeline ul li:nth-child(even) .item::before {
  right: -20px;
  border-left: 10px solid #fff;
  border-right: 10px solid transparent;
}
.timeline-box .timeline ul li .item {
  position: relative;
  box-shadow: 2px 4px 15px 1px rgba(102, 102, 102, 0.1);
  background-color: #fff;
  padding: 25px;
}
.timeline-box .timeline ul li .item::before {
  content: "";
  width: 0;
  height: 0;
  position: absolute;
  top: 50%;
  transform: translate(0, -50%);
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
}
.timeline-box .timeline ul li .item .des {
  width: 234px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  overflow: hidden;
  text-overflow: ellipsis;
  -webkit-box-orient: vertical;
  margin-top: 7px;
  font-size: 18px;
  line-height: 24px;
}
.timeline-box .timeline ul li .item .title {
  font-size: 24px;
  font-weight: bold;
  line-height: 37px;
  position: relative;
}
.timeline-box .timeline ul li .item .title::after {
  position: absolute;
  content: "";
  width: 19px;
  height: 21px;
  background: url(../images/about/date.png) center no-repeat;
  top: 50%;
  margin-left: 10px;
  transform: translate(0, -50%);
}