.all {
  color: #fff;
  position: relative;
  z-index: 2;
}

video {
  display: block;
}

.wrap {
  position: relative;
  z-index: 2;
}

.bg {
  position: absolute;
  width: 100%;
  top: 0;
  left: 0;
}

.intro .flx {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.intro .l {
  width: 45%;
}
.intro .img {
  position: relative;
  height: 0;
  padding-bottom: 63.6%;
  overflow: hidden;
  display: block;
  -webkit-transition: 0.5s;
  transition: 0.5s;
  border-radius: 10px;
}
.intro .img img, .intro .img video {
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
  -o-object-fit: cover;
     object-fit: cover;
}
.intro .img .video {
  z-index: 2;
}
.intro .r {
  width: 47%;
  padding-top: 1px;
}
.intro .tit {
  line-height: 1.38;
  font-weight: bold;
}
.intro .des {
  line-height: 1.77;
  opacity: 0.7;
}

.challenges {
  margin-top: 155px;
  position: relative;
}
.challenges .challenges_bg {
  position: absolute;
  width: 100%;
  left: 0;
  bottom: 0;
}
.challenges .challenges_phone {
  display: none;
}
.challenges .wrap {
  position: relative;
  z-index: 2;
}
.challenges .list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  margin-top: 130px;
}
.challenges .item {
  width: 33.33%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.challenges .item:nth-child(3n-1) {
  padding-right: 60px;
}
.challenges .item:nth-child(3n-2) {
  padding-right: 60px;
}
.challenges .l {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}
.challenges .l::after {
  width: 2px;
  height: 150px;
  content: "";
  display: block;
  margin-top: 16px;
  background: -webkit-gradient(linear, left top, left bottom, from(rgb(66, 112, 213)), to(rgba(66, 112, 213, 0)));
  background: linear-gradient(rgb(66, 112, 213), rgba(66, 112, 213, 0));
}
.challenges .r {
  width: calc(100% - 60px);
}
.challenges .box {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-pack: distribute;
      justify-content: space-around;
  -webkit-box-align: end;
      -ms-flex-align: end;
          align-items: flex-end;
}
.challenges .card{
        display: flex;
    flex-direction: column;
    align-items: center;
}
.challenges .top {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  position: relative;
  z-index: 2;
  text-align: center;
}
.challenges .top img {
  margin: 5px 0 10px;
}
.challenges .point {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid #fff;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}
.challenges .point::after {
  content: "";
  display: block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
}
.challenges .btm {
  margin-top: -14px;
  width: 212px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: end;
      -ms-flex-align: end;
          align-items: flex-end;
}
.challenges .btm > div {
    padding: 0 10px;
  width: 100%;
  height: 100%;
  padding-top: 40px;
  border-radius: 20px;
  background: -webkit-gradient(linear, left top, left bottom, from(rgb(66, 112, 213)), color-stop(50%, rgb(80, 81, 184)), color-stop(80%, rgba(66, 112, 213, 0)));
  background: linear-gradient(rgb(66, 112, 213), rgb(80, 81, 184) 50%, rgba(66, 112, 213, 0) 80%);
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}
.challenges .num {
  font-weight: bold;
  line-height: 1;
}
.challenges .tips {

  padding: 0 12px;
  margin-top: 5px;
  text-align: center;
}
.challenges .card:nth-child(1) .btm {
  height: 220px;
}
.challenges .card:nth-child(2) .btm {
  height: 320px;
}
.challenges .card:nth-child(3) .btm {
  height: 500px;
}

.approach {
  margin-top: 190px;
  position: relative;
}
.approach .approach_bg {
  display: none;
}
.approach .flx {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  position: relative;
}
.approach .flx > img {
  display: none;
}
.approach .flx video {
  width: 60%;
  margin: auto;
}
.approach .item {
  position: absolute;
  width: 54px;
}
.approach .item:nth-child(1) {
  top: 38%;
  left: 10%;
}
.approach .item:nth-child(2) {
  top: 70%;
  left: 42%;
}
.approach .item:nth-child(3) {
  top: 30%;
  left: 62%;
}
.approach .icon {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: #fff;
  -webkit-box-shadow: 0 0 10px 10px rgba(0, 108, 239, 0.1);
          box-shadow: 0 0 10px 10px rgba(0, 108, 239, 0.1);
  position: relative;
  z-index: 2;
  cursor: pointer;
}
.approach .icon img {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
}
.approach .minus {
  opacity: 0;
}
.approach .act {
  z-index: 3;
}
.approach .act .minus {
  opacity: 1;
}
.approach .act .plus {
  opacity: 0;
}
.approach .txt {
  position: absolute;
  max-width: 590px;
  top: 50%;
  -webkit-transform: translateY(-50%);
      -ms-transform: translateY(-50%);
          transform: translateY(-50%);
  left: 27px;
  background: rgba(10, 12, 53, 0.8);
  padding: 36px 36px 36px 47px;
  border-radius: 20px;
  -webkit-box-shadow: 0 0 10px 10px rgba(83, 43, 231, 0.28);
          box-shadow: 0 0 10px 10px rgba(83, 43, 231, 0.28);
}
.approach .tit {
  cursor: pointer;
  white-space: nowrap;
}
.approach .des {
  opacity: 0.7;
  line-height: 1.6;
  margin-top: 15px;
  display: none;
}

.products {
  position: relative;
  z-index: 2;
}
.products .point {
  display: none;
}
.products .icon {
  height: 96px;
  margin-left: 60px;
}
.products .icon img {
  height: 100%;
}
.products .box {
  position: relative;
}
.products .txt {
  -webkit-box-shadow: 0 0 5px 5px rgba(83, 43, 231, 0.3);
          box-shadow: 0 0 5px 5px rgba(83, 43, 231, 0.3);
  padding: 20px;
  height: 515px;
  padding: 85px 60px 42px;
  border-radius: 10px;
  margin-top: -48px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  background: #0a0c35;
}
.products .list > div {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  line-height: 1.77;
  -webkit-box-align: baseline;
      -ms-flex-align: baseline;
          align-items: baseline;
}
.products .list > div img {
  width: 14px;
  height: 10px;
  margin-right: 15px;
}
.products .list > div div {
  opacity: 0.7;
}
.products .swiper {
  padding: 20px;
}
.products .des {
  opacity: 0.7;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.interconnects {
  margin-top: 285px;
  position: relative;
  z-index: 2;
}
.interconnects .box {
  background-size: cover;
  background-position: center;
  background-image: url(../img/interconnects.png);
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  border-radius: 10px;
  text-align: center;
  padding-left: 5%;
  padding-right: 5%;
}
.interconnects .tit {
  line-height: 1.2;
}
.interconnects .des {
  line-height: 1.6;
  opacity: 0.7;
  margin-top: 15px;
}
.interconnects .flx {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}
.interconnects a {
  width: auto;
  padding: 0 24px;
  margin: 0 10px;
}

.bg_video {
  position: relative;
  padding-bottom: 120px;
}
.bg_video .bg {
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
}
.bg_video .phone_bg {
  display: none;
}

@media screen and (max-width: 1700px) {
  .intro .r {
    padding-top: 0;
  }
  .challenges .item:nth-child(3n-1) {
    padding-right: 30px;
  }
  .challenges .item:nth-child(3n-2) {
    padding-right: 30px;
  }
  .challenges {
    margin-top: 8%;
  }
  .challenges .list {
    margin-top: 6%;
  }
  /*.challenges .card:nth-child(1) .btm {
    height: 170px;
  }
  .challenges .card:nth-child(2) .btm {
    height: 270px;
  }
  .challenges .card:nth-child(3) .btm {
    height: 400px;
  }*/
  .approach {
    margin-top: 9.8%;
  }
  .approach .txt {
    max-width: inherit;
    width: 400px;
    padding: 20px 20px 20px 35px;
    border-radius: 10px;
    left: 20px;
  }
  .approach .tit {
    white-space: inherit;
  }
  .approach .icon {
    width: 40px;
    height: 40px;
  }
  .products .icon {
    height: 70px;
    margin-left: 40px;
  }
  .products .txt {
    padding: 60px 40px 40px;
    height: 480px;
  }
  .interconnects {
    margin-top: 14.8%;
  }
  .bg_video {
    padding-bottom: 8.33%;
  }
}
@media screen and (max-width: 1200px) {
    .bg_video{
        margin-top: 10%;
    }
  .challenges .btm {
    width: 180px;
  }
  .challenges .r {
    width: calc(100% - 40px);
  }
  .challenges .l::after {
    height: 170px;
  }
  .approach .item {
    position: relative;
    top: inherit !important;
    left: inherit !important;
    width: auto;
  }
  .approach .item:nth-child(n+2) {
    margin-top: 20px;
  }
  .approach .des {
    display: block;
  }
  .approach .txt {
    position: relative;
    width: 100%;
    -webkit-transform: inherit;
        -ms-transform: inherit;
            transform: inherit;
    top: inherit;
    left: 0;
  }
  .approach .flx {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
  }
  .approach .list {
    padding: 0 5%;
  }
  .products .txt {
    height: 420px;
    left: 0;
  }
  .products .icon {
    margin-left: 40px;
  }
  .approach .icon {
    display: none;
  }
  .products .point {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
  }
}
@media screen and (max-width: 768px) {
  .intro .flx {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
  }
  .intro .l {
    width: 100%;
  }
  .intro .r {
    width: 100%;
    margin-top: 6vw;
  }
  .challenges .list {
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
  }
  .challenges .item {
    width: 100%;
  }
  .challenges .item:nth-child(n+2) {
    margin-top: 20px;
  }
  .challenges .l::after {
    height: 90px;
  }
  .challenges .card {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
  }
  .challenges .btm {
    width: 110px;
  }
  .challenges .btm > div {
    border-radius: 10px;
  }
  .challenges .box {
    margin-top: 15px;
  }
  .interconnects .flx {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
  }
  .interconnects a {
    margin: 5px 0;
  }
  .products .txt {
    height: auto;
    padding: 60px 30px 30px;
  }
  .products .txt > div:last-child {
    margin-top: 8vw;
  }
  .challenges .top {
    position: relative;
  }
  .card_tit {
    white-space: nowrap;
    position: absolute;
    left: 50%;
    -webkit-transform: translateX(-50%);
        -ms-transform: translateX(-50%);
            transform: translateX(-50%);
    bottom: 100%;
  }
  .intro .img video {
    display: none;
  }
  .challenges .challenges_bg {
    display: none;
  }
  .challenges .challenges_phone {
    display: block;
    width: 100%;
    position: absolute;
    bottom: 0;
  }
  .approach .flx video {
    display: none;
  }
  .approach_bg .challenges_phone {
    display: block;
    width: 100%;
  }
  .approach .plus {
    opacity: 0;
  }
  .approach .minus {
    opacity: 1;
  }
  .challenges {
    margin-top: 12vw;
  }
  .approach {
    margin-top: 12vw;
  }
  .bg_video {
    margin-top: 12vw;
    padding-bottom: 12vw;
  }
  .interconnects {
    margin-top: 11vw;
  }
  .bg_video .bg {
    display: none;
  }
  .bg_video .phone_bg {
    display: block;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    -o-object-fit: cover;
       object-fit: cover;
    position: absolute;
  }
  .products .box {
    margin-top: 15px;
  }
}
@media screen and (max-width: 500px) {
  .challenges .tips {
    font-size: 10px;
  }
  .challenges .box {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
  }
  .card_tit {
    position: relative;
    left: 0;
    -webkit-transform: inherit;
        -ms-transform: inherit;
            transform: inherit;
  }
  .challenges .card {
    width: 100%;
  }
  .challenges .btm {
    height: 140px !important;
    width: 100%;
  }
  .challenges .btm > div {
    padding-top: 25px;
  }
}