.download-banner {
  position: relative;
  width: 100%;
  height: 400px;
}
.download-banner .feature-banner-mask {
  background-image: linear-gradient(0deg, #002957 0%, #001d49 100%);
  opacity: 0.7;
}
.download-banner .feature-banner-img,
.download-banner .feature-banner-mask {
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
}
.download-banner .feature-banner-title-content {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  color: #fff;
  text-align: center;
  transform: translate(-50%, -50%);
}
.download-banner .feature-banner-title-content h2 {
  margin-bottom: 20px;
  font-weight: 500;
  font-size: 40px;
  line-height: 48px;
}
.download-banner .feature-banner-title-content p {
  font-size: 16px;
  line-height: 22px;
  opacity: 0.8;
}

.customer-case .container{
    width: 1200px;
    margin: 0 auto;
}
.customer-case .tab {
  height: 70px;
  background: #f7f9fc;
}
.customer-case .tab .container {
  position: relative;
}
.customer-case .tab ul {
  height: 70px;
}
.customer-case .tab li {
  position: absolute;
  top: 0;
  width: 214px;
  height: 70px;
  color: #1a1b20;
  font-size: 20px;
  line-height: 70px;
  letter-spacing: 0.38px;
  text-align: center;
  cursor: pointer;
}
.customer-case .tab li.active {
  color: #0daade;
  border-bottom: solid 4px #0daade;
}
.customer-case .tab li:first-child {
  left: 0;
}
.customer-case .tab li:nth-child(2) {
  left: 214px;
}
.customer-case .tab li:nth-child(3) {
  left: 428px;
}
.customer-case .tab li:nth-child(4) {
  left: 642px;
}
.customer-case .tab li:nth-child(5) {
  left: 856px;
}
.customer-case .tab .tab-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 264px;
  height: 4px;
  background: #0daade;
  transition: left 0.3s ease;
}

.customer-case .feature-banner-mask {
  display: none;
}
.customer-case h3.title {
  color: #1a1b20;
  font-weight: 500;
  font-size: 32px;
  text-align: center;
}
.customer-case p.sub-title {
  color: #9ca1ad;
  font-size: 18px;
  text-align: center;
}
.customer-case .video-list {
  padding: 60px 0 0 0;
  background: #f9fafb;
  box-shadow: 0 0 20px 0 rgb(19 27 5.5%) inset;
}
.customer-case .video-list p.sub-title {
  margin: 10px 0 10px;
}
.customer-case .video-list ul {
  display: flex;
  flex-wrap: wrap;
  width: 1200px;
  margin: 0 auto;
}
.customer-case .video-list li {
  width: 560px;
  height: 400px;
  margin: 20px;
  background: #fff;
  border: 1px solid rgba(19, 27, 33, 0.1);
  transition: all 0.3s ease-in-out;
}
.customer-case .video-list li:hover {
  box-shadow: 0 0 10px 0 rgba(24, 32, 41, 0.1);
  transform: translateY(-10px);
}
.customer-case .video-list li > a > img {
  display: block;
  width: 100%;
  height: 330px;
}
.customer-case .video-list .video-title {
  display: flex;
  padding: 8px 16px;
}
.customer-case .video-list .video-title img {
  display: inline-block;
  width: 54px;
  height: 54px;
}
.customer-case .video-list .video-title span {
  margin-left: 20px;
  font-size: 16px;
  line-height: 54px;
}
.customer-case .customer-pagination {
  width: 100%;
  min-height: 40px;
  background: #f9fafb;
}
.customer-case .customer-pagination .pagination {
  background: #f9fafb;
}
.customer-case .customer-pagination .pagination-list {
  padding-top: 20px;
  padding-bottom: 60px;
}
.customer-case .case-list {
  width: 1200px;
  margin: 0 auto;
  padding-top: 80px;
}
.customer-case .case-list p.sub-title {
  margin: 12px 0 30px;
}
.customer-case .case-list ul {
  display: flex;
  flex-wrap: wrap;
  max-height: 730px;
  overflow: hidden;
}
.customer-case .case-list li > a {
  display: flex;
  width: 560px;
  height: 118px;
  margin: 10px 20px;
  padding: 20px;
  background-color: #fff;
  border: 1px solid #dfe1e6;
  transition: all 0.3s ease-in-out;
}
.customer-case .case-list li > a:hover {
  box-shadow: 0 0 20px 0 rgba(19, 27, 33, 0.1);
}
.customer-case .case-list li > a:hover .container > .case-title {
  color: #1bacca;
}
.customer-case .case-list li > a img {
  width: 210px;
  height: 75px;
  object-fit: scale-down;
}
.customer-case .case-list li > a .container {
  width: 290px;
  margin-left: 20px;
}
.customer-case .case-list li > a .container .case-title {
  width: 100%;
  margin-bottom: 10px;
  overflow: hidden;
  color: #1a1b20;
  font-weight: bold;
  font-size: 20px;
}
.customer-case .case-list li > a .container .rich-text {
  margin-top: 10px;
  overflow: hidden;
  color: #666;
  font-weight: 400;
  font-size: 14px;
  line-height: 20px;
  word-break: break-all;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
.customer-case .case-list .view-more {
  display: flex;
  justify-content: center;
  margin-top: 48px;
  color: #0daade;
  font-size: 14px;
  line-height: 20px;
}
.customer-case .case-list .view-more span {
  cursor: pointer;
}
.customer-case .case-list .view-more i {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-left: 4px;
}
.customer-case .case-list .view-more i.more {
  background: url(https://download.qingteng.cn/frontendcdn/assets/images/79a794965b60d0a6f553d003e4fe82ef.png) top center / cover no-repeat;
}
.customer-case .case-list .view-more i.collapse {
  background: url(https://download.qingteng.cn/frontendcdn/assets/images/68c19dbe004fdb5c37012f3ccb38ea8f.png) top center / cover no-repeat;
}
.customer-case .case-list .view-more .hidden {
  display: none;
}
.customer-case .case-pagination {
  width: 100%;
  min-height: 120px;
  background: #fff;
}
.customer-case .case-pagination .pagination-list {
  padding-top: 30px;
  padding-bottom: 120px;
}
.customer-case .mask {
  position: fixed;
  top: 0;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  transform: translateX(-120%);
}
.customer-case .close {
  width: 780px;
  height: 40px;
  text-align: right;
}
.customer-case .close i {
  display: inline-block;
  width: 40px;
  height: 40px;
  background: url(https://download.qingteng.cn/frontendcdn/assets/images/2c2e26f8a54c6c121a9a380df08e18c7.png) top center / cover no-repeat;
}
.customer-case .close i:hover {
  cursor: pointer;
}
.customer-case .rich-text p {
  color: #666 !important;
}

.customer-case-detail {
  padding-top: 0;
}
.customer-case-detail .breadcrumb {
  display: flex;
  width: 1200px;
  margin: 0 auto;
  padding-top: 48px;
  line-height: 20px;
}
.customer-case-detail .breadcrumb a {
  color: #1bacca;
  font-size: 14px;
  cursor: pointer;
}
.customer-case-detail .breadcrumb span {
  color: #666;
  font-size: 14px;
}
.customer-case-detail .breadcrumb i {
  width: 12px;
  height: 12px;
  margin: 4px 4px 0;
  background: url(https://download.qingteng.cn/frontendcdn/assets/images/0fd4af46e2ec605d22fb9534eb689132.png) top center / cover no-repeat;
}
.customer-case-detail .case-content {
  display: flex;
  justify-content: space-between;
  width: 1200px;
  margin: 0 auto;
}
.customer-case-detail .case-content .content {
  width: 900px;
}
.customer-case-detail .case-content .content .title {
  height: 42px;
  margin: 60px 0;
  color: #000;
  font-weight: 500;
  font-size: 30px;
  line-height: 42px;
}
.customer-case-detail .case-content .detail-content {
  margin-bottom: 80px;
  color: #414652;
}
.customer-case-detail .case-content .detail-content h2,
.customer-case-detail .case-content .detail-content h3,
.customer-case-detail .case-content .detail-content h4 {
  margin-bottom: 18px;
  padding-top: 4px;
  color: #1a1b20;
  line-height: 28px;
}
.customer-case-detail .case-content .detail-content h2 {
  font-size: 20px;
}
.customer-case-detail .case-content .detail-content h3 {
  font-size: 18px;
}
.customer-case-detail .case-content .detail-content h4 {
  font-size: 16px;
}
.customer-case-detail .case-content .detail-content p {
  margin-bottom: 24px;
  font-size: 14px;
  line-height: 24px;
}
.customer-case-detail .case-content .detail-content .alignleft {
  text-align: left;
}
.customer-case-detail .case-content .detail-content .aligncenter {
  text-align: center;
}
.customer-case-detail .case-content .detail-content .alignright {
  text-align: right;
}
.customer-case-detail .case-content .detail-content .ql-align-left {
  text-align: left;
}
.customer-case-detail .case-content .detail-content .ql-align-center {
  text-align: center;
}
.customer-case-detail .case-content .detail-content .ql-align-right {
  text-align: right;
}
.customer-case-detail .case-content .detail-content .ql-video {
  display: block;
  max-width: 100%;
}
.customer-case-detail .case-content .detail-content .ql-video.ql-align-center {
  margin: 0 auto;
}
.customer-case-detail .case-content .list {
  width: 240px;
  padding-top: 60px;
}
.customer-case-detail .case-content .list .title {
  margin-bottom: 4px;
  color: #000;
  font-weight: 500;
  font-size: 24px;
  line-height: 33px;
}
.customer-case-detail .case-content .list ul li {
  display: flex;
  margin: 16px 0;
}
.customer-case-detail .case-content .list ul li a {
  flex: 1;
  color: #333;
  font-size: 14px;
  line-height: 20px;
  cursor: pointer;
}
.customer-case-detail .case-content .list ul li a:hover {
  color: #1bacca;
}
.customer-case-detail .case-content .product {
  margin-top: 90px;
}