.pagination-list {
  display: flex;
  justify-content: center;
}
.pagination-item {
  width: 40px;
  height: 40px;
  margin-right: 30px;
  color: #333;
  font-size: 16px;
  line-height: 40px;
  text-align: center;
  background: #fff;
  border: 1px solid #dfe1e6;
  border-radius: 2px;
}
.pagination-item:hover {
  color: #00a4c5;
  border: 1px solid #00a4c5;
}
.pagination-item:last-child {
  margin-right: 0;
}
.pagination-item.active {
  background: none;
  border: 1px solid #0000;
}
.pagination-item.disabled .pagination-icon {
  cursor: not-allowed;
  opacity: 0.3;
}
.pagination-item.disabled:hover {
  border: 1px solid #dfe1e6;
}
.pagination-item a {
  display: block;
  width: 100%;
  height: 100%;
}
.pagination-icon img {
  display: block;
  width: 40px;
  height: 40px;
}
.about-us .banner {
  position: relative;
  height: 400px;
  overflow: hidden;
  color: #fff;
  text-align: center;
}
.about-us .banner .banner-bg {
  position: absolute;
  top: -72px;
  left: 0;
  width: 100%;
  height: 100%;
  margin-top: 72px;
}
.about-us .banner img {
  filter: blur(7px);
}
.about-us .banner .banner-mask {
  background-image: linear-gradient(0deg, rgba(0, 41, 87, 0.6) 0%, rgba(3, 19, 51, 0.6) 100%);
}
.about-us .banner h2 {
  position: absolute;
  top: 192px;
  left: 50%;
  z-index: 1;
  font-size: 44px;
  line-height: 48px;
  transform: translateX(-50%);
}
.about-us .banner p {
  position: absolute;
  top: 254px;
  left: 50%;
  z-index: 1;
  font-size: 18px;
  line-height: 26px;
  transform: translateX(-50%);
}
.about-us .news-banner {
  width: 100%;
  height: 550px;
  background: url(https://download5.qingteng.cn/frontendcdn/www/assets/images/e6ce416db417d4d0693f204c4b78e038.jpg) center top no-repeat;
  background-size: auto 550px;
  position: relative;
}
.about-us .news-banner img {
  position: absolute;
  left: 50%;
  width: auto;
  max-width: none;
  height: 100%;
  transform: translateX(-50%);
}
.about-us .news-banner .banner-body {
  position: absolute;
  left: 50%;
  z-index: 2;
  box-sizing: border-box;
  width: 1200px;
  padding: 260px 600px 0 0;
  transform: translateX(-50%);
}
.about-us .news-banner .banner-body h1 {
  color: #1a1b20;
  font-size: 40px;
  font-weight: bold;
  line-height: 56px;
}
.about-us .news-banner .banner-body .zzm99999 {
  color: #1a1b20;
  font-size: 40px;
  font-weight: bold;
  line-height: 56px;
}
.about-us .news-banner .banner-body div.text {
  padding-top: 8px;
  color: #666;
  font-size: 24px;
}
.about-us .news-banner .banner-body div.button {
  display: flex;
  justify-content: flex-start;
  padding-top: 38px;
}
.about-us .news-banner .banner-body div.button a {
  box-sizing: border-box;
  height: 32px;
  margin-right: 30px;
  padding: 0 40px;
  color: #00A4C5;
  font-size: 14px;
  line-height: 30px;
  text-align: center;
  border: 1px solid #00A4C5;
  border-radius: 4px;
  cursor: pointer;
}
.about-us .news-banner .banner-body div.button a:hover {
  color: white;
  background: #00A4C5;
}
.about-us .news-details-banner {
  background-size: auto 360px;
  height: 360px;
}
.about-us .news-details-banner .banner-body {
  padding-top: 160px;
}
.about-us .tab {
  height: 70px;
  background: #f7f9fc;
}
.about-us .tab .container {
  position: relative;
}
.about-us .tab ul {
  height: 70px;
}
.about-us .tab li {
  position: absolute;
  top: 0;
  width: 264px;
  height: 70px;
  color: #1a1b20;
  font-size: 20px;
  line-height: 70px;
  letter-spacing: 0.38px;
  text-align: center;
  cursor: pointer;
}
.about-us .tab li.active {
  color: #0daade;
}
.about-us .tab li:first-child {
  left: 0;
}
.about-us .tab li:nth-child(2) {
  left: 308px;
}
.about-us .tab li:nth-child(3) {
  left: 616px;
}
.about-us .tab li:nth-child(4) {
  left: 924px;
}
.about-us .tab .tab-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 264px;
  height: 4px;
  background: #0daade;
  transition: left 0.3s ease;
}
.about-us .tab-content .company-introduction h3 {
  color: #1a1b20;
  font-size: 34px;
  letter-spacing: 0.53px;
}
.about-us .tab-content .company-introduction h4 {
  color: #515767;
  font-size: 20px;
  letter-spacing: 0.62px;
  text-align: justify;
}
.about-us .tab-content .company-introduction .company-profile {
  margin-top: 80px;
}
.about-us .tab-content .company-introduction .company-profile .profile {
  margin-top: 60px;
  color: #515767;
  font-size: 14px;
  line-height: 24px;
  letter-spacing: 0.44px;
  text-align: justify;
}
.about-us .tab-content .company-introduction .company-profile .profile .empty {
  height: 14px;
  line-height: 14px;
}
.about-us .tab-content .company-introduction .company-profile .profile-video {
  width: 1200px;
  height: 640px;
  margin: 24px auto 0 auto;
  background-color: black;
}
.about-us .tab-content .company-introduction .company-profile .profile-video video {
  width: 100%;
  height: 100%;
}
.about-us .tab-content .company-introduction .business-founder {
  margin-top: 160px;
}
.about-us .tab-content .company-introduction .business-founder .ceo-introduction {
  width: 560px;
  height: 460px;
  margin-top: 81px;
  padding: 60px 80px 62px 80px;
  background: url(https://download5.qingteng.cn/frontendcdn/www/assets/images/b325db708abea29c31ceb8722b414c10.png) no-repeat;
  background-size: cover;
}
.about-us .tab-content .company-introduction .business-founder .ceo-introduction .ceo-name {
  color: #1a1b20;
  font-size: 28px;
  letter-spacing: 0.44px;
}
.about-us .tab-content .company-introduction .business-founder .ceo-introduction .ceo-name span {
  margin-left: 12px;
  color: #1a1b20;
  font-size: 14px;
  letter-spacing: 0.22px;
}
.about-us .tab-content .company-introduction .business-founder .ceo-introduction p {
  margin-top: 45px;
  color: #515767;
  font-size: 14px;
  line-height: 24px;
  letter-spacing: 0.44px;
  text-align: justify;
}
.about-us .tab-content .company-introduction .business-founder .ceo-introduction .line {
  width: 92px;
  height: 2px;
  margin-top: 40px;
  background: #0daade;
}
.about-us .tab-content .company-introduction .business-founder .ceo-photo {
  width: 640px;
  height: 460px;
  margin-top: 81px;
}
.about-us .tab-content .company-introduction .company-vision {
  height: 228px;
  margin-top: 159px;
  background: url(https://download5.qingteng.cn/frontendcdn/www/assets/images/8511acb08b3addbf32351ce0857f6906.png) no-repeat;
  background-size: cover;
}
.about-us .tab-content .company-introduction .company-vision h3 {
  color: #1a1b20;
  font-size: 34px;
  letter-spacing: 0.53px;
  text-align: center;
}
.about-us .tab-content .company-introduction .company-vision h4 {
  color: #515767;
  font-size: 20px;
  line-height: 28px;
  letter-spacing: 0.62px;
  text-align: center;
}
.about-us .tab-content .company-introduction .company-vision img {
  display: block;
  width: 305px;
  height: 19px;
  margin: 48px auto 0 auto;
}
.about-us .tab-content .company-introduction .company-vision .line {
  width: 160px;
  height: 1px;
  margin: 8px auto 0 auto;
  background: #1a1b20;
}
.about-us .tab-content .company-introduction .company-active {
  margin-top: 160px;
}
.about-us .tab-content .company-introduction .company-active .slider {
  width: 1200px;
  height: 588px;
  margin-top: 80px;
  overflow: hidden;
}
.about-us .tab-content .company-introduction .company-active .slider ul {
  position: relative;
}
.about-us .tab-content .company-introduction .company-active .slider li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-content: space-between;
  float: left;
  width: 1200px;
  height: 588px;
}
.about-us .tab-content .company-introduction .company-active .slider li div:hover img {
  transform: scale(1.1);
  transition: transform 0.5s ease;
}
.about-us .tab-content .company-introduction .company-active .slider li div img {
  transform: scale(1);
  transition: transform 0.5s ease;
}
.about-us .tab-content .company-introduction .company-active .slider .active-info {
  background: #03172f;
}
.about-us .tab-content .company-introduction .company-active .slider .active-info h4 {
  margin-top: 49px;
  color: #fff;
  font-size: 24px;
  letter-spacing: 0.75px;
  text-align: center;
}
.about-us .tab-content .company-introduction .company-active .slider .active-info .line {
  width: 128px;
  height: 1px;
  margin: 0 auto;
  background-color: #fff;
}
.about-us .tab-content .company-introduction .company-active .slider .active-info h5 {
  color: #fff;
  font-size: 14px;
  letter-spacing: 0.44px;
  text-align: center;
}
.about-us .tab-content .company-introduction .company-active .slider .active-info p {
  width: 208px;
  margin: 18px auto 0 auto;
  color: #fff;
  font-size: 12px;
  line-height: 17px;
  letter-spacing: 0.38px;
}
.about-us .tab-content .company-introduction .company-active .slider div {
  width: 288px;
  height: 288px;
  overflow: hidden;
}
.about-us .tab-content .company-introduction .company-active .rect {
  position: relative;
  height: 4px;
  margin-top: 32px;
  margin-bottom: 120px;
}
.about-us .tab-content .company-introduction .company-active .rect ul {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.about-us .tab-content .company-introduction .company-active .rect ul li {
  float: left;
  width: 32px;
  height: 4px;
  margin-right: 8px;
  background-color: #e1e4eb;
  cursor: pointer;
}
.about-us .tab-content .company-introduction .company-active .rect ul:last-child {
  margin-right: 0;
}
.about-us .tab-content .company-introduction .company-active .rect ul li.active {
  background-color: #888f9e;
}
.about-us .tab-content .develop-history h2 {
  margin-top: 80px;
  color: #1a1b20;
  font-size: 34px;
  letter-spacing: 0.53px;
}
.about-us .tab-content .develop-history .history {
  margin-top: 80px;
  margin-bottom: 240px;
  padding-left: 40px;
}
.about-us .tab-content .develop-history .history-year-content {
  display: flex;
  margin-top: 40px;
  margin-bottom: 64px;
}
.about-us .tab-content .develop-history .history-line {
  position: relative;
  width: 2px;
  margin: 4px 155px 0 39px;
  background: #0daade;
}
.about-us .tab-content .develop-history .history-line::before {
  position: absolute;
  bottom: 0;
  left: 50%;
  display: block;
  width: 12px;
  height: 12px;
  background-color: #0daade;
  border-bottom: 0;
  transform: translateX(-50%);
  content: '';
}
.about-us .tab-content .develop-history .history-year {
  color: #1a1b20;
  font-size: 36px;
  letter-spacing: 0.56px;
}
.about-us .tab-content .develop-history .history-month {
  color: #1a1b20;
  font-size: 28px;
  letter-spacing: 0.44px;
}
.about-us .tab-content .develop-history .history-month span {
  color: #515767;
  font-size: 14px;
  line-height: 24px;
  letter-spacing: 0.44px;
  text-align: justify;
}
.about-us .tab-content .develop-history .history-event {
  margin-bottom: 64px;
}
.about-us .tab-content .develop-history .history-event-content {
  margin-top: 20px;
  color: #1a1b20;
  font-size: 20px;
  letter-spacing: 0.31px;
}
.about-us .tab-content .develop-history .history-event-des {
  margin-top: 4px;
  color: #515767;
  font-size: 14px;
  line-height: 24px;
  letter-spacing: 0.44px;
  text-align: justify;
}
.about-us .tab-content .select-type {
  width: 100%;
  height: 64px;
  margin: 40px 0;
  background: #f7f9fc;
  border-radius: 4px;
}
.about-us .tab-content .select-type a {
  display: inline-block;
  margin-left: 24px;
  font-size: 20px;
  line-height: 64px;
  letter-spacing: 0.31px;
}
.about-us .tab-content .select-type-sign {
  position: relative;
  top: 4px;
  display: inline-block;
  width: 1px;
  height: 24px;
  margin-left: 24px;
  background-color: #9ca1ad;
}
.about-us .tab-content .select-type-text {
  color: #565d6e;
  cursor: pointer;
}
.about-us .tab-content .select-type-text-active {
  color: #00a4c5;
}
.about-us .tab-content .hide {
  display: none;
}
.about-us .tab-content .company-news h2 {
  margin-top: 80px;
  color: #1a1b20;
  font-size: 34px;
  letter-spacing: 0.53px;
}
.about-us .tab-content .company-news .news li {
  position: relative;
  height: 144px;
  margin-top: 80px;
  padding-left: 320px;
}
.about-us .tab-content .company-news .news li:last-child {
  margin-bottom: 80px;
}
.about-us .tab-content .company-news .news li img {
  position: absolute;
  top: 0;
  left: 0;
  width: 240px;
  height: 144px;
  border: 1px solid #e1e3e6;
}
.about-us .tab-content .company-news .news li a {
  color: #1a1b20;
  font-size: 20px;
  letter-spacing: 0.5px;
}
.about-us .tab-content .company-news .news li a:hover {
  color: #0daade;
}
.about-us .tab-content .company-news .news li dd {
  margin-top: 8px;
  color: #515767;
  font-size: 14px;
  line-height: 24px;
  letter-spacing: 0.44px;
  text-align: justify;
}
.about-us .tab-content .company-news .news li .time {
  margin-top: 12px;
  color: #9ca1ad;
  font-size: 14px;
  line-height: 24px;
  letter-spacing: 0.44px;
  text-align: justify;
}
.about-us .tab-content .company-news .pagination {
  margin-bottom: 100px;
}
.about-us .tab-content .contact-us h2 {
  margin-top: 80px;
  color: #1a1b20;
  font-size: 34px;
  letter-spacing: 0.53px;
}
.about-us .tab-content .contact-us .contact-ways {
  display: flex;
  margin-top: 60px;
}
.about-us .tab-content .contact-us .contact-ways li {
  flex: 1;
  width: 276px;
}
.about-us .tab-content .contact-us .contact-ways li img {
  display: block;
  width: 80px;
  height: 80px;
  margin: 0 auto;
}
.about-us .tab-content .contact-us .contact-ways li p {
  margin-top: 24px;
  color: #1a1b20;
  font-size: 20px;
  letter-spacing: 0.5px;
  text-align: center;
}
.about-us .tab-content .contact-us .contact-ways li p:last-child {
  margin-top: 8px;
  color: #515767;
  font-size: 14px;
  line-height: 24px;
  letter-spacing: 0.44px;
}
.about-us .tab-content .contact-us .company-address h2 {
  margin-top: 160px;
  color: #1a1b20;
  font-size: 34px;
  letter-spacing: 0.53px;
}
.about-us .tab-content .contact-us .company-address ul {
  margin-top: 80px;
}
.about-us .tab-content .contact-us .company-address ul li {
  height: 300px;
  margin-bottom: 48px;
}
.about-us .tab-content .contact-us .company-address ul li:last-child {
  margin-bottom: 160px;
}
.about-us .tab-content .contact-us .company-address ul li .map {
  width: 560px;
  height: 300px;
  overflow: hidden;
}
.about-us .tab-content .contact-us .company-address ul li .map:hover img {
  transform: scale(1.1);
  transition: all 0.5s ease;
}
.about-us .tab-content .contact-us .company-address ul li img {
  display: block;
  width: 560px;
  height: 300px;
  transition: all 0.5s ease;
}
.about-us .tab-content .contact-us .company-address ul li .address {
  margin-top: 90px;
  margin-left: 160px;
}
.about-us .tab-content .contact-us .company-address ul li .address p {
  color: #1a1b20;
  font-size: 20px;
  letter-spacing: 0.5px;
}
.about-us .tab-content .contact-us .company-address ul li .address p:nth-child(2) {
  margin-top: 20px;
  color: #515767;
  font-size: 14px;
  line-height: 24px;
  letter-spacing: 0.44px;
  text-align: justify;
}
.about-us .tab-content .contact-us .company-address ul li .address p:nth-child(3) {
  margin-top: 8px;
  color: #515767;
  font-size: 14px;
  line-height: 24px;
  letter-spacing: 0.44px;
  text-align: justify;
}
.about-us .news-detail {
  width: 1184px;
  margin: auto;
  display: flex;
}
.about-us .cleft {
  padding-left: 24px;
  box-sizing: border-box;
  flex: 1;
  padding-top: 80px;
}
.about-us .cleft .list-body {
  position: sticky;
  top: 86px;
  padding-bottom: 80px;
}
.about-us .cleft .download {
  width: 100%;
  border-radius: 8px;
  overflow: hidden;
  background-color: white;
  margin-bottom: 7px;
}
.about-us .cleft .download .title {
  width: 100%;
  display: flex;
  border-bottom: 1px solid;
  border-image: linear-gradient(90deg, #b6eefa, #ffffff) 1 1;
  margin-bottom: 17px;
}
.about-us .cleft .download .title span {
  font-weight: 500;
  font-size: 24px;
  color: #1A1B20;
  line-height: 28px;
  width: 200px;
  padding: 16px 0;
}
.about-us .cleft .download .title a {
  line-height: 28px;
  font-weight: 400;
  font-size: 16px;
  color: #666666;
  text-align: right;
  padding: 16px 0;
  flex: 1;
  background: url(https://download5.qingteng.cn/frontendcdn/www/assets/images/0fd4af46e2ec605d22fb9534eb689132.png) right center no-repeat;
  padding-right: 14px;
  background-size: 10px auto;
}
.about-us .cleft .download .title a:hover {
  color: #00A4C5;
}
.about-us .cleft .download > a {
  display: flex;
  width: 100%;
  margin-bottom: 18px;
}
.about-us .cleft .download a:hover h1 {
  color: #00A4C5;
}
.about-us .cleft .download a:hover .zzm99999 {
  color: #00A4C5;
}
.about-us .cleft .download img {
  width: 124px;
  height: 74px;
  border-radius: 8px;
  object-fit: cover;
}
.about-us .cleft .download .text {
  padding: 0 0 0 14px;
  flex: 1;
  display: flex;
  align-items: center;
}
.about-us .cleft .download .text h1 {
  font-weight: 400;
  font-size: 14px;
  color: #1A1B20;
  line-height: 22px;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.about-us .cleft .download .text .zzm99999 {
  font-weight: 400;
  font-size: 14px;
  color: #1A1B20;
  line-height: 22px;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}
.about-us .cleft .service {
  width: 100%;
  height: 174px;
  background: url(https://download5.qingteng.cn/frontendcdn/www/assets/images/6a9e9f2f620036826d34f3e44655b252.png) center center no-repeat;
  background-size: cover;
  padding: 32px 16px;
  border-radius: 8px;
  overflow: hidden;
}
.about-us .cleft .service:hover {
  box-shadow: 0px 10px 20px 0px #F3F3F3;
}
.about-us .cleft .service h1 {
  font-size: 18px;
  font-weight: 500;
  color: #666;
  line-height: 24px;
  padding-bottom: 8px;
}
.about-us .cleft .service .zzm99999 {
  font-size: 18px;
  font-weight: 500;
  color: #666;
  line-height: 24px;
  padding-bottom: 8px;
}
.about-us .cleft .service h2 {
  font-size: 24px;
  font-weight: 500;
  color: #00A4C5;
  line-height: 34px;
  padding-bottom: 24px;
}
.about-us .cleft .service span {
  display: inline-block;
  width: 88px;
  height: 26px;
  line-height: 26px;
  text-align: center;
  background: #FFFFFF;
  border-radius: 8px;
  border: 1px solid #00A4C5;
  font-size: 14px;
  font-weight: 500;
  color: #00A4C5;
}
.about-us .cleft .service span:hover {
  background-color: #00A4C5;
  color: white;
}
.about-us .news {
  width: 876px;
  margin: 0px auto 24px auto;
}
.about-us .news .breadcrumb {
  display: flex;
  width: 1184px;
  margin: 0 auto;
  padding-top: 24px;
  line-height: 20px;
}
.about-us .news .breadcrumb a {
  color: #666;
  font-size: 14px;
  cursor: pointer;
}
.about-us .news .breadcrumb span {
  color: #00A4C5;
  font-size: 14px;
}
.about-us .news .breadcrumb i {
  width: 12px;
  height: 12px;
  margin: 4px 4px 0;
  background: url(https://download5.qingteng.cn/frontendcdn/www/assets/images/0fd4af46e2ec605d22fb9534eb689132.png) top center / cover no-repeat;
}
.about-us .news-title {
  padding-top: 40px;
  padding-bottom: 10px;
  color: #1a1b20;
  font-size: 34px;
  line-height: 48px;
}
.about-us .news-message {
  display: flex;
  padding-bottom: 30px;
  color: #565d6e;
  font-size: 14px;
  line-height: 28px;
}
.about-us .news-time {
  padding-right: 20px;
}
.about-us .news-source-link:hover {
  color: #00a4c5;
}
.about-us .news-content {
  color: #414652;
  padding-bottom: 46px;
  border-bottom: 1px solid #D7DEE4;
}
.about-us .news-content h2,
.about-us .news-content h4,
.about-us .news-content h3 {
  margin-bottom: 18px;
  padding-top: 4px;
  color: #1d0022;
  line-height: 28px;
}
.about-us .news-content h2 {
  font-size: 20px;
}
.about-us .news-content h3 {
  font-size: 18px;
}
.about-us .news-content h4 {
  font-size: 16px;
}
.about-us .news-content p {
  margin-bottom: 24px;
  font-size: 14px;
  line-height: 24px;
}
.about-us .news-content img {
  margin-bottom: 34px;
  padding-top: 16px;
}
.about-us .news-content .alignleft {
  text-align: left;
}
.about-us .news-content .aligncenter {
  text-align: center;
}
.about-us .news-content .alignright {
  text-align: right;
}
.about-us .news-content .ql-align-left {
  text-align: left;
}
.about-us .news-content .ql-align-center {
  text-align: center;
}
.about-us .news-content .ql-align-right {
  text-align: right;
}
.about-us .news-content .ql-video {
  display: block;
  max-width: 100%;
}
.about-us .news-content .ql-video.ql-align-center {
  margin: 0 auto;
}
.about-us .news-page {
  width: 100%;
  padding-top: 34px;
  padding-bottom: 130px;
}
.about-us .news-page a {
  display: block;
  font-weight: 500;
  font-size: 16px;
  color: #1A1B20;
  line-height: 24px;
  padding-left: 14px;
}
.about-us .news-page a:nth-child(1) {
  margin-bottom: 16px;
  background: url(https://download5.qingteng.cn/frontendcdn/www/assets/images/1a2740429cb354c4faf58bdb77bb32b5.png) left center no-repeat;
  background-size: auto 10px;
}
.about-us .news-page a:nth-child(1).alink:hover {
  color: #00A4C5;
  text-decoration: underline;
  background-image: url(https://download5.qingteng.cn/frontendcdn/www/assets/images/b16c6aa5d9cbb4bb73d8568ce099870f.png);
}
.about-us .news-page a:nth-child(2) {
  background: url(https://download5.qingteng.cn/frontendcdn/www/assets/images/d19c8a9fa66b61d223da1544cd5001c5.png) left center no-repeat;
  background-size: auto 10px;
}
.about-us .news-page a:nth-child(2).alink:hover {
  color: #00A4C5;
  text-decoration: underline;
  background-image: url(https://download5.qingteng.cn/frontendcdn/www/assets/images/759083147ae6b101cc3d8fe55925a98c.png);
}
.about-us .view-more {
  display: flex;
  margin: 40px 0 100px 240px;
  color: #0daade;
  font-size: 20px;
  line-height: 10px;
  cursor: pointer;
}
.about-us .view-more i {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-left: 4px;
}
.about-us .view-more i.more {
  background: url(https://download5.qingteng.cn/frontendcdn/www/assets/images/79a794965b60d0a6f553d003e4fe82ef.png) top center / cover no-repeat;
}
.about-us .view-more i.collapse {
  background: url(https://download5.qingteng.cn/frontendcdn/www/assets/images/68c19dbe004fdb5c37012f3ccb38ea8f.png) top center / cover no-repeat;
}
.about-us .hidden {
  display: none;
}
.about-us .company-vision-max-height {
  max-height: 2170px;
  overflow: hidden;
}