@media (max-width: 992px) {
  html {
    font-size: 20px;
  }
}
@media (max-width: 512px) {
  html {
    font-size: 10px;
  }
}
@keyframes a-fadeIn-bottom {
  from {
    opacity: 0;
    transform: translateY(100px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes a-fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
.mainCont {
  background-color: #f6f7f9;
}
.mainCont .zIndex1 {
  position: relative;
  z-index: 3;
}
.mainCont .module-header {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.mainCont .module-header .module-title {
  position: relative;
  font-size: 34px;
  color: #313642;
}
.mainCont .module-header .module-title::before, .mainCont .module-header .module-title::after {
  content: "";
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 80px;
  height: 2px;
  background-color: #ea4731;
}
.mainCont .module-header .module-title::before {
  left: -122px;
}
.mainCont .module-header .module-title::after {
  right: -122px;
}
.mainCont .module-header .module-desc {
  position: relative;
  margin-top: 15px;
  padding: 0 36px;
  line-height: 68px;
  font-size: 24px;
  color: #3f4657;
}
.mainCont .module-header .module-desc p {
  z-index: 1;
}
.mainCont .module-header .module-desc::before, .mainCont .module-header .module-desc::after {
  z-index: 0;
  content: "";
  position: absolute;
  width: 43px;
  height: 36px;
  background-size: 100% 100%;
}
.mainCont .module-header .module-desc::before {
  background: url("../../images/aboutUs/aboutSandStone/quotation_mark_left.png");
  left: 0;
  top: 0;
}
.mainCont .module-header .module-desc::after {
  background: url("../../images/aboutUs/aboutSandStone/quotation_mark_right.png");
  right: 0;
  bottom: 0;
}
.mainCont .box-banner {
  height: 500px;
  background: -moz-linear-gradient(left, #171924, #141C33);
  background: -webkit-linear-gradient(left, #171924, #141C33);
  background: -o-linear-gradient(left, #171924, #141C33);
  background: -ms-linear-gradient(left, #171924, #141C33);
  background: linear-gradient(to right, #171924, #141C33);
  display: flex;
  justify-content: flex-start;
  align-items: center;
}
.mainCont .box-banner img {
  left: 50%;
  transform: translateX(-50%);
  top: 0;
}
.mainCont .box-banner img.img-banner {
  display: block;
}
.mainCont .box-banner img.img-banner-m {
  display: none;
}
.mainCont .box-banner .box-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  animation: a-fadeIn-bottom 1s ease-in-out forwards;
}
.mainCont .box-banner .box-text::after {
  content: "";
  width: 78px;
  height: 4px;
  background-color: #fff;
  margin-top: 97px;
}
.mainCont .box-banner .box-text .banner-title {
  font-size: 48px;
  color: #fff;
  margin-bottom: 26px;
}
.mainCont .box-banner .box-text .banner-subTitle {
  font-size: 24px;
  color: rgba(223, 236, 255, 0.6);
}
.mainCont .box-tool-bar {
  height: 78px;
  box-shadow: 10px 0 50px rgba(56, 40, 38, 0.1);
}
.mainCont .box-tool-bar .box-tool-bar-cont {
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}
.mainCont .box-tool-bar .box-tool-bar-cont .tab-bar {
  font-size: 0;
}
.mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li {
  position: relative;
  padding-bottom: 26px;
  display: inline-block;
  font-size: 18px;
  color: #313642;
}
.mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background-color: transparent;
}
.mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li:nth-child(n+2) {
  margin-left: 54px;
}
.mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li:hover {
  cursor: pointer;
  color: #e94730;
}
.mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li:hover::after {
  background-color: #e94730;
}
.mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li.tab-active {
  color: #e94730;
}
.mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li.tab-active::after {
  background-color: #e94730;
}
.mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li.tab-active a {
  color: #e94730;
}
.mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li a {
  font-size: 18px;
  color: #313642;
}
.mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li a:hover {
  color: #e94730;
}
.mainCont .box-cont-all {
  overflow: hidden;
}
.mainCont .box-cont-all.hide-cont {
  max-height: 1000px;
}
.mainCont .box-cont-all .box-look-more {
  background: linear-gradient(-180deg, rgba(246, 247, 249, 0) 0%, #f6f7f9 30%);
  left: 0;
  bottom: 0;
  height: 200px;
  z-index: 2;
}
.mainCont .box-cont-all .box-look-more p {
  font-size: 18px;
  color: #9b9ca0;
  bottom: 84px;
}
.mainCont .box-cont-all .box-certificate {
  padding: 68px 0;
}
@keyframes scrollAniUp {
  from {
    top: 200px;
    opacity: 0;
  }
  to {
    top: 0;
    opacity: 1;
  }
}
.mainCont .box-cont-all .box-certificate.content-item {
  max-width: 1220px;
}
.mainCont .box-cont-all .box-certificate .list-certificate {
  margin-top: 67px;
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.mainCont .box-cont-all .box-certificate .list-certificate .item-certificate {
  position: relative;
  margin: 0 10px 24px 10px;
  width: 285px;
  height: 180px;
  box-shadow: 4px 4px 10px rgba(60, 66, 79, 0.06);
  background-color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
}
.mainCont .box-cont-all .box-certificate .list-certificate .item-certificate:hover {
  cursor: pointer;
  box-shadow: 8px 8px 20px rgba(235, 97, 67, 0.3);
  background-color: #eb6143;
}
.mainCont .box-cont-all .box-certificate .list-certificate .item-certificate:hover .item-text-title, .mainCont .box-cont-all .box-certificate .list-certificate .item-certificate:hover .item-text-year {
  color: #fff;
}
.mainCont .box-cont-all .box-certificate .list-certificate .item-certificate .item-mark-certificate {
  left: 0;
  top: 0;
  background-color: transparent;
}
.mainCont .box-cont-all .box-certificate .list-certificate .item-certificate .item-text-title {
  margin-bottom: 22px;
  min-height: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #404755;
  text-align: center;
  font-size: 22px;
  line-height: 30px;
}
.mainCont .box-cont-all .box-certificate .list-certificate .item-certificate .item-text-year {
  margin-bottom: 30px;
  font-size: 18px;
  color: #9b9c9f;
  text-align: center;
}
.mainCont .box-cont-all .box-certificate .list-certificate .item-certificate .box-img-certificate {
  display: none;
  top: 0;
  padding: 24px;
  background-color: rgba(0, 0, 0, 0.71);
  z-index: 2;
  text-align: center;
  animation: a-fadeIn 0.5s linear forwards;
}
.mainCont .box-cont-all .box-certificate .list-certificate .item-certificate .box-img-certificate img {
  max-height: 339px;
}
.mainCont .box-cont-all .box-certificate .list-certificate .item-certificate .box-img-certificate.img-certificate-fixed {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
}
.mainCont .box-cont-all .box-business {
  padding: 68px 0;
  background-color: #fff;
}
.mainCont .box-cont-all .box-business .list-business {
  margin-top: 67px;
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.mainCont .box-cont-all .box-business .list-business.content-item {
  max-width: 1220px;
}
.mainCont .box-cont-all .box-business .list-business .item-business {
  position: relative;
  margin: 0 10px 24px 10px;
  padding: 0 26px;
  width: 285px;
  height: 180px;
  border: 1px solid #edeff2;
  box-shadow: 4px 4px 10px rgba(60, 66, 79, 0.06);
  background-color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.mainCont .box-cont-all .box-business .list-business .item-business:hover {
  cursor: pointer;
  border: none;
  box-shadow: 8px 8px 20px rgba(235, 97, 67, 0.3);
  background-color: #eb6143;
}
.mainCont .box-cont-all .box-business .list-business .item-business:hover .box-item-text p {
  color: #fff;
}
.mainCont .box-cont-all .box-business .list-business .item-business .item-mark-business {
  left: 0;
  top: 0;
  background-color: transparent;
}
.mainCont .box-cont-all .box-business .list-business .item-business .box-item-text p {
  width: 100%;
  font-size: 22px;
  color: #404755;
  line-height: 30px;
  text-align: center;
}
.mainCont .box-cont-all .box-business .list-business .item-business .box-img-business {
  display: none;
  top: 0;
  padding: 24px;
  background-color: rgba(0, 0, 0, 0.71);
  z-index: 2;
  text-align: center;
  animation: a-fadeIn 0.5s linear forwards;
}
.mainCont .box-cont-all .box-business .list-business .item-business .box-img-business img {
  max-height: 339px;
}
.mainCont .box-cont-all .box-business .list-business .item-business .box-img-business.img-business-fixed {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
}
.mainCont .box-cont-all .box-patent {
  padding: 68px 0;
}
.mainCont .box-cont-all .box-patent.content-item {
  max-width: 1300px;
}
.mainCont .box-cont-all .box-patent .list-patent {
  margin-top: 67px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.mainCont .box-cont-all .box-patent .list-patent .item-patent {
  margin: 0 22px 34px;
  height: 365px;
}
.mainCont .box-cont-all .box-patent .list-patent .item-patent .box-img {
  box-shadow: 10px 10px 30px rgba(221, 221, 221, 0.3);
}

@media (max-width: 992px) {
  .mainCont .module-header .module-title::before, .mainCont .module-header .module-title::after {
    display: none;
  }
  .mainCont .box-banner {
    height: 90.6666666667vw;
    align-items: flex-start;
  }
  .mainCont .box-banner img {
    width: 100%;
    height: 100%;
  }
  .mainCont .box-banner img.img-banner {
    display: none;
  }
  .mainCont .box-banner img.img-banner-m {
    display: block;
  }
  .mainCont .box-banner .box-text {
    margin-top: 17.8666666667vw;
    align-items: center;
    justify-content: center;
  }
  .mainCont .box-banner .box-text::after {
    display: none;
  }
  .mainCont .box-banner .box-text .banner-title {
    position: relative;
    font-size: 2.4rem;
    font-weight: bold;
    margin-bottom: 2.9333333333vw;
  }
  .mainCont .box-banner .box-text .banner-title::after {
    content: "";
    position: absolute;
    top: 6.9rem;
    left: 50%;
    transform: translateX(-50%);
    width: 5.7rem;
    height: 0.25rem;
    background-color: #fff;
    margin-top: 2.45rem;
  }
  .mainCont .box-banner .box-text .banner-subTitle {
    font-size: 1.5rem;
  }
  .mainCont .box-banner .box-text .banner-subTitle p {
    display: block;
    text-align: center;
  }
  .mainCont .box-tool-bar {
    padding: 0 2.6rem 0 3.85rem;
    height: 5rem;
    box-shadow: 0.5rem 0 2.5rem rgba(56, 40, 38, 0.1);
  }
  .mainCont .box-tool-bar .box-tool-bar-cont {
    padding: 0;
    overflow-x: auto;
  }
  .mainCont .box-tool-bar .box-tool-bar-cont .tab-bar {
    white-space: nowrap;
    font-size: 0;
  }
  .mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li {
    padding-bottom: 1.4rem;
    font-size: 1.4rem;
    white-space: nowrap;
  }
  .mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li::after {
    height: 0.2rem;
  }
  .mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li:nth-child(n+2) {
    margin-left: 2.7rem;
  }
  .mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li:hover::after {
    background-color: transparent;
  }
  .mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li.tab-active {
    color: #e94730;
  }
  .mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li.tab-active::after {
    background-color: #e94730;
  }
  .mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li.tab-active a {
    color: #e94730;
  }
  .mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li.tab-active a:hover {
    color: #e94730;
  }
  .mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li a {
    font-size: 1.4rem;
  }
  .mainCont .box-tool-bar .box-tool-bar-cont .tab-bar li a:hover {
    color: #313642;
  }
  .mainCont .box-tool-bar .box-tool-bar-cont::-webkit-scrollbar {
    display: none;
  }
  .mainCont .box-cont-all.hide-cont {
    max-height: 53.2rem;
  }
  .mainCont .box-cont-all .box-look-more {
    height: 34.6666666667vw;
  }
  .mainCont .box-cont-all .box-look-more p {
    bottom: 17.8666666667vw;
  }
  .mainCont .box-cont-all .box-certificate {
    padding: 3.4rem 0;
  }
  .mainCont .box-cont-all .box-certificate .list-certificate {
    position: relative;
    top: 30%;
    margin-top: 3.2rem;
  }
  .mainCont .box-cont-all .box-certificate .list-certificate .item-certificate {
    margin: 0 0.5rem 1.7rem 0.5rem;
    width: 42.6666666667vw;
    height: 26.6666666667vw;
  }
  .mainCont .box-cont-all .box-certificate .list-certificate .item-certificate:hover {
    cursor: pointer;
    box-shadow: 4px 4px 10px rgba(60, 66, 79, 0.06);
    background-color: #fff;
  }
  .mainCont .box-cont-all .box-certificate .list-certificate .item-certificate:hover .item-text-title {
    color: #404755;
  }
  .mainCont .box-cont-all .box-certificate .list-certificate .item-certificate:hover .item-text-year {
    color: #9b9c9f;
  }
  .mainCont .box-cont-all .box-certificate .list-certificate .item-certificate .item-mark-certificate {
    display: none;
  }
  .mainCont .box-cont-all .box-certificate .list-certificate .item-certificate .item-text-title {
    margin-bottom: 2.9333333333vw;
    min-height: 8vw;
    font-size: 2.4vw;
    line-height: 1.5;
  }
  .mainCont .box-cont-all .box-certificate .list-certificate .item-certificate .item-text-year {
    margin-bottom: 4vw;
    font-size: 2.1333333333vw;
  }
  .mainCont .box-cont-all .box-certificate .list-certificate .item-certificate .box-img-certificate.img-certificate-fixed {
    width: 100%;
    height: 100%;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 100;
  }
  .mainCont .box-cont-all .box-certificate .list-certificate .item-certificate .box-img-certificate.img-certificate-fixed img {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    max-width: 100%;
    max-height: 90%;
  }
  .mainCont .box-cont-all .box-business {
    padding: 3.4rem 0;
  }
  .mainCont .box-cont-all .box-business .list-business .item-business:hover {
    border: 1px solid #edeff2;
    box-shadow: 4px 4px 10px rgba(60, 66, 79, 0.06);
    background-color: #fff;
  }
  .mainCont .box-cont-all .box-business .list-business .item-business:hover .box-item-text p {
    color: #404755;
  }
  .mainCont .box-cont-all .box-business .item-mark-business {
    display: none;
  }
  .mainCont .box-cont-all .box-business .box-img-business.img-business-fixed {
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
  }
  .mainCont .box-cont-all .box-business .box-img-business.img-business-fixed img {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    max-width: 100%;
    max-height: 90%;
  }
  .mainCont .box-cont-all .box-patent {
    padding: 3.4rem 0;
  }
}