.wh {
  position: relative;
}

.wh .box-fill {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
}

.wh .box-fill video,
.wh .box-fill img {
  display: block;
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
}

.row {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  width: 100%;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
}

.l-grid {
  display: grid !important;
}
.l-grid.col-1 {
  grid-template-columns: repeat(1, 1fr);
}
.l-grid.col-2 {
  grid-template-columns: repeat(2, 1fr);
}
.l-grid.col-3 {
  grid-template-columns: repeat(3, 1fr);
}
.l-grid.col-4 {
  grid-template-columns: repeat(4, 1fr);
}
@media screen and (max-width: 480px) {
  .l-grid.col-xxs-1 {
    grid-template-columns: repeat(1, 1fr);
  }
}
@media screen and (max-width: 480px) {
  .l-grid.col-xxs-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media screen and (max-width: 480px) {
  .l-grid.col-xxs-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media screen and (max-width: 480px) {
  .l-grid.col-xxs-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}
@media screen and (max-width: 768px) {
  .l-grid.col-xs-1 {
    grid-template-columns: repeat(1, 1fr);
  }
}
@media screen and (max-width: 768px) {
  .l-grid.col-xs-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media screen and (max-width: 768px) {
  .l-grid.col-xs-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media screen and (max-width: 768px) {
  .l-grid.col-xs-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}
@media screen and (max-width: 992px) {
  .l-grid.col-sm-1 {
    grid-template-columns: repeat(1, 1fr);
  }
}
@media screen and (max-width: 992px) {
  .l-grid.col-sm-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media screen and (max-width: 992px) {
  .l-grid.col-sm-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media screen and (max-width: 992px) {
  .l-grid.col-sm-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}
@media screen and (max-width: 1200px) {
  .l-grid.col-md-1 {
    grid-template-columns: repeat(1, 1fr);
  }
}
@media screen and (max-width: 1200px) {
  .l-grid.col-md-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media screen and (max-width: 1200px) {
  .l-grid.col-md-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media screen and (max-width: 1200px) {
  .l-grid.col-md-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.l-container {
  width: 100%;
  /*max-width: 1920px;*/
  margin: 0 auto;
  overflow: hidden;
}
.l-container.screen{
    height: 100vh;
    display: flex;
     flex-direction: column;
}
.l-container.screen .header{
    position: relative;
    flex: none;
}
.l-container.screen .fill{
    flex: 1;
        display: flex;
     flex-direction: column;
     overflow: hidden;
}
.l-container.screen .fill .floor{
    height: 100%;
        display: flex;
     flex-direction: column;
     overflow: hidden;
}
.l-container.screen .fill .floor-title.list-title{
    flex: none;
    margin: 3%;
}
.l-container.screen .fill .video-container{
    height: auto;
    flex: 1;
    overflow: hidden;
    margin-bottom: 30px;
}
.l-container .w {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}
@media screen and (max-width: 1200px) {
    .l-container .w {
      width: 95%;
    }
}
.header {
  width: 100%;
  position: fixed;
  left: 50%;
  top: 0;
  -webkit-transform: translate(-50%, 0);
          transform: translate(-50%, 0);
  z-index: 9999;
  background-color: rgba(0, 0, 0, 0.1);
}
.header.ss{
   background-color: #fff; 
   border-bottom: #eee 1px solid;
}
.header .w{
    width: 95%;
    max-width: unset;
}
.header .floor {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  padding: 4px 0 !important;
}
.header .logo {
  margin: 0 0 0 0;
  width: 7.5%;
}
.header.ss .search{
      border: #999 1px solid ;
}
.header .search {
 min-width: 300px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  font-size: 18px;
  width: 20%;
  height: 2em;
  border-radius: 1.3888888889em;
  background-color: #fff;
overflow: hidden;
}
.header .search-btn {
  -webkit-box-flex: 0;
      -ms-flex: 0 0 2.7777777778em;
          flex: 0 0 2.7777777778em;
  height: 100%;
  background: url(../images/search-btn.png) no-repeat center center;
  background-size: 60%;
  margin: 0 0 0 0.5555555556em;
  cursor: pointer;
}
.header .search-ipt {
  -webkit-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
  font-family: SourceHanSansCN-Medium;
  color: #535353;
  padding: 0 20px;
}
.header .nav {
  margin: 1% auto 0 30px;
  height: 100%;
}
.header .nav ul {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  height: 100%;
  gap: 2em;
}
.header .nav ul > li {
  position: relative;
}
.header .nav ul > li.have-sub > a::after {
  content: "";
  display: block;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  margin-left: 6px;
  width: 6px;
  height: 6px;
  background: url(../images/sj.png) no-repeat;
}
.header .nav ul > li > a {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  line-height: 3;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  text-align: center;
  font-family: SourceHanSansCN-Medium;
  font-size: 17px;
  font-weight: normal;
  font-stretch: normal;
  letter-spacing: 0px;
  color: #535353;
}
.header .nav ul > li > a:hover {
  color: #e7380d;
}
.header .nav ul > li:hover .sub-nav {
  opacity: 1;
  visibility: visible;
  -webkit-transform: translate(-50%, 100%);
          transform: translate(-50%, 100%);
}
.header .nav ul > li:hover a::after {
  -webkit-transform: rotate(180deg);
          transform: rotate(180deg);
}
.header .nav .sub-nav {
  opacity: 0;
  visibility: hidden;
  background-color: #fff;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  padding: 0 15px;
  position: absolute;
  left: 50%;
  bottom: 0;
  -webkit-transform: translate(-50%, calc(100% + 20px));
          transform: translate(-50%, calc(100% + 20px));
}
.header .nav .sub-nav a {
  display: block;
  white-space: nowrap;
  line-height: 3;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  text-align: center;
  font-family: SourceHanSansCN-Medium;
  font-size: 15px;
  font-weight: normal;
  font-stretch: normal;
  letter-spacing: 0px;
  color: #535353;
}
.header .nav .sub-nav a:hover {
  color: #e7380d;
}

.floor-title {
  text-align: center;
}
.floor-title span {
  font-family: SourceHanSansCN-Medium;
  font-size: 22px;
  font-weight: normal;
  font-stretch: normal;
  letter-spacing: 0px;
  color: #000000;
}
@media screen and (min-width: 768px) {
  .floor-title span {
    font-size: 24px;
  }
}
@media screen and (min-width: 992px) {
  .floor-title span {
    font-size: 31px;
  }
}
@media screen and (min-width: 1200px) {
  .floor-title span {
    font-size: 38px;
  }
}
.floor-title p {
  font-size: 16px;
  font-weight: normal;
  font-stretch: normal;
  line-height: 2.5238095238;
  letter-spacing: 0px;
  color: #535353;
}
@media screen and (min-width: 992px) {
  .floor-title p {
    font-size: 17px;
  }
}
@media screen and (min-width: 1200px) {
  .floor-title p {
    font-size: 21px;
  }
}
.floor-title.white span,
.floor-title.white p {
  color: #fff;
}

.floor-title2 {
  text-align: center;
}
.floor-title2 span {
  font-family: SourceHanSansCN-Bold;
  font-size: 20px;
  font-weight: normal;
  font-stretch: normal;
  letter-spacing: 0px;
  color: #000000;
}
@media screen and (min-width: 992px) {
  .floor-title2 span {
    font-size: 21px;
  }
}
@media screen and (min-width: 1200px) {
  .floor-title2 span {
    font-size: 26px;

  }
}
@media screen and (min-width: 1400px) {
  .floor-title2 span {
    font-size: 30px;

  }
}
/*.floor-title3 {*/
/*  text-align: center;*/
/*}*/
.floor-title3 span {
  font-family: SourceHanSansCN-Medium;
  font-size: 24px;
  font-weight: normal;
  font-stretch: normal;
  letter-spacing: 0px;
  color: #000000;
}
@media screen and (min-width: 768px) {
  .floor-title3 span {
    font-size: 24px;
  }
}
@media screen and (min-width: 992px) {
  .floor-title3 span {
    font-size: 31px;
  }
}
@media screen and (min-width: 1200px) {
  .floor-title3 span {
    font-size: 38px;
  }
}

.footer {
  text-align: center;
  background-color: #282828;
  color: #fff;
  padding: 1% 0 2%;
}
.footer .c {
  margin: 0.5% 0 1%;
  font-family: SourceHanSansCN-Regular;
  font-size: 15px;
  font-weight: normal;
  font-stretch: normal;
  line-height: 25px;
  letter-spacing: 0px;
  color: #ffffff;
}
.footer .b {
  font-family: SourceHanSansCN-ExtraLight;
  font-size: 13px;
  font-weight: normal;
  font-stretch: normal;
  line-height: 20px;
  letter-spacing: 0px;
  color: #ffffff;
}

.video-container {
  position: relative;
  width: 100%;
  height: 100vh;
  background-color: #000;
}
.video-container .v-gb {
  position: absolute;
  display: block;
  right: 20px;
  top: 20px;
  width: 40px;
  height: 40px;
  background: url(../images/gban.png) no-repeat center;
  background-size: 60%;
  z-index: 1;
}
.video-container video {
  display: block;
  width: 100%;
  height: 100%;
  -o-object-fit: contain;
     object-fit: contain;
}

@media screen and (max-width: 1200px) {
  .floor {
    padding-left: 2% !important;
    padding-right: 2% !important;
  }
}
@media screen and (max-width: 768px) {
  .header .search {
    display: none;
  }
  .l-container.screen .fill .floor{
    height: auto;
}
}
.header .mnav-btn {
  display: none;
}


@media screen and (max-width: 768px) {
  .header {
    padding: 0 2.5%;
    height: 12vmin;
  }
  .header .logo {
    width: auto;
  }
  .header .logo img {
    height: 8vmin;
    width: auto;
  }
  .header .nav {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100vh;
    background-color: #fff;
    z-index: 99990;
    margin: 0;
    -webkit-transform: translateX(-100%);
    transform: translateX(-100%);
    -webkit-transition: all 0.5s;
    transition: all 0.5s;
  }
  .header .nav.active {
    -webkit-transform: translateX(0);
    transform: translateX(0);
  }
  .header .nav ul {
    padding: 6%;
    height: 100%;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    text-align: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
  }
  .header .nav ul > li > a {
    font-size: 18px !important;
    line-height: 2;
    font-weight: bold !important;
  }
  .header .nav .sub-nav {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    opacity: 1;
    visibility: visible;
    background-color: #fff;
    -webkit-transition: all 0.5s;
    transition: all 0.5s;
    padding: 0 15px;
    position: relative;
    left: auto;
    bottom: auto;
    -webkit-transform: translate(0);
    transform: translate(0);
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    -webkit-box-pack: start;
        -ms-flex-pack: start;
            justify-content: flex-start;
    gap: 10px;
  }
  .header .mnav-btn {
    display: block;
    position: absolute;
    right: 10px;
    top: 50%;
    -webkit-transform: translateY(-50%);
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    background-color: #fff;
    background: url(../images/nav-meaun.png) no-repeat center;
    background-size: 80%;
  }
  .header .mnav-btn.close {
    top: 10px;
    -webkit-transform: translate(0);
    transform: translate(0);
    background: url(../images/gb.png) no-repeat center;
    background-size: 50%;
    z-index: 99991;
  }
  .bg {
    background: url(../images/bg.png) no-repeat top center;
    background-size: 100% 100%;
  }
  .header .nav ul > li:hover .sub-nav {
      opacity: 1;
      visibility: visible;
      -webkit-transform: translate(0);
              transform: translate(0);
    }
}