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

.bg {
  position: fixed;
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  top: 0;
  left: 0;
}

.phone_bg {
  display: none;
}

.why .why_phone {
  display: none;
}
.why .box {
  -webkit-box-shadow: 0 0 30px 20px rgba(83, 43, 231, 0.3);
          box-shadow: 0 0 30px 20px rgba(83, 43, 231, 0.3);
  background: #0a0c35;
  border-radius: 10px;
}
.why .flx {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  position: relative;
}
.why .relative {
  position: relative;
}
.why .relative img{
        transform: scale(0.8);
}
.why .item {
  position: absolute;
  width: 300px;
}
.why .item:nth-child(1) {
  top: 0;
  left: 70px;
}
.why .item:nth-child(1) .des {
  display: block;
}
.why .item:nth-child(2) {
  top: 0;
  right: 70px;
}
.why .item:nth-child(3) {
  top: 50%;
  left: 70px;
}
.why .item:nth-child(4) {
  top: 50%;
  right: 70px;
}
.why .des {
  display: none;
  opacity: 0.7;
  line-height: 1.77;
  margin-top: 15px;
}
.why .tit {
  line-height: 1.35;
  cursor: pointer;
}
.why .why_point div {
  width: 23px;
  height: 23px;
  border-radius: 50%;
  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;
  position: absolute;
  background: #fff;
}
.why .why_point div::after {
  content: "";
  display: block;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: linear-gradient(45deg, #4270d5, #5c57c7);
}
.why .why_point div:nth-child(1) {
  top: 32.5%;
  left: 36%;
}
.why .why_point div:nth-child(2) {
  top: 32.5%;
  left: 61%;
}
.why .why_point div:nth-child(3) {
  top: 64.5%;
  left: 36%;
}
.why .why_point div:nth-child(4) {
  top: 64.5%;
  left: 61%;
}
.why .why_point .act::before {
  border-radius: 50%;
  content: "";
  display: block;
  width: 200%;
  height: 200%;
  background: rgba(255, 255, 255, 0.1);
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
      -ms-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}
.why .intro {
  padding-top: 210px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}
.why .intro .img {
  position: relative;
  height: 0;
  padding-bottom: 60.6%;
  overflow: hidden;
  display: block;
  -webkit-transition: 0.5s;
  transition: 0.5s;
  border-radius: 10px;
}
.why .intro .img img {
  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;
}
.why .intro .img video {
  position: absolute;
  z-index: 2;
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
      -ms-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  display: block;
}
.why .l {
  width: 650px;
}
.why .r {
  width: calc(100% - 720px);
}
.why .intro_tit{
    font-weight: bold;
}
.why .intro_des {
  opacity: 0.7;
  line-height: 1.77;
}

.key {
  padding-top: 155px;
}
.key .flx {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
}
.key .flx > div {
  width: 33.33%;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}
.key .flx > div:nth-child(3n) {
  border-right: none;
  padding-left: 55px;
}
.key .flx > div:nth-child(3n-2) {
  padding-right: 55px;
}
.key .flx > div:nth-child(3n-1) {
  padding: 0 55px;
}
.key .flx > div:hover .icon {
  -webkit-box-shadow: 0 0 20px 10px rgba(168, 145, 255, 0.3);
          box-shadow: 0 0 20px 10px rgba(168, 145, 255, 0.3);
}
.key .flx .icon {
  width: 50px;
  height: 50px;
  border-radius: 10px;
  border: 1px solid #669ab3;
  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;
  background: #120e34;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
}
.key .flx .icon img{
    max-height: 50%;
    max-width: 50%;
}
.key .flx .tit {
  line-height: 1.35;
}
.key .flx .des {
  opacity: 0.7;
}

.system {
  padding-top: 175px;
}
.system .flx {
  text-align: center;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
.system .tit {
  line-height: 1;
}
.system .des {
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50px;
  padding: 5px 30px;
  margin-top: 10px;
}
.system .summary {
  color: #8e8eff;
  text-align: center;
}
.system .box {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}
.system .box > div {
  position: relative;
}
.system .name {
  position: absolute;
}
.system .name:nth-child(1) {
  left: 50%;
  -webkit-transform: translateX(-50%);
      -ms-transform: translateX(-50%);
          transform: translateX(-50%);
  bottom: 100%;
}
.system .name:nth-child(2) {
  left: 102%;
  top: 36%;
}
.system .name:nth-child(3) {
  top: 100%;
  left: 76%;
}
.system .name:nth-child(4) {
  top: 100%;
  left: 14%;
}
.system .name:nth-child(5) {
  right: 102%;
  top: 36%;
}
.system .tips {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  margin-top: 115px;
}
.system .tips div {
  margin: 0 20px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}
.system .tips div::before {
  content: "";
  display: block;
  width: 33px;
  height: 13px;
  margin-right: 7px;
  background: #fff;
  border-radius: 30px;
}
.system .tips div:first-child:before {
  background: #5c57c7;
}
.system .con {
  color: #8e8eff;
  text-align: center;
}

.products {
  margin-top: 115px;
  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;
}

@media screen and (max-width: 1700px) {
  .why .item:nth-child(1), .why .item:nth-child(3) {
    left: 45px;
  }
  .why .item:nth-child(2), .why .item:nth-child(4) {
    right: 45px;
  }
  .why .relative {
    width: 80%;
  }
  .why .relative img {
    width: 100%;
  }
  .why .intro {
    padding-top: 14.58%;
  }
  .why .l {
    width: 570px;
  }
  .why .r {
    width: calc(100% - 610px);
  }
  .key {
    padding-top: 8%;
  }
  .key .flx > div:nth-child(3n-1) {
    padding: 0 35px;
  }
  .key .flx > div:nth-child(3n-2) {
    padding-right: 35px;
  }
  .key .flx > div:nth-child(3n) {
    padding-left: 35px;
  }
  .system {
    padding-top: 9%;
  }
  .system .des {
    padding: 5px 15px;
  }
  .system .box img {
    width: 500px;
  }
  .system .tips {
    margin-top: 7.98%;
  }
  .products {
    margin-top: 6%;
  }
  .products .icon {
    height: 70px;
    margin-left: 40px;
  }
  .products .txt {
    padding: 60px 40px 40px;
    height: 480px;
  }
}
@media screen and (max-width: 1200px) {
  .key .flx > div:nth-child(3n-1) {
    padding: 0 30px;
  }
  .key .flx > div:nth-child(3n-2) {
    padding-right: 30px;
  }
  .key .flx > div:nth-child(3n) {
    padding-left: 30px;
  }
  .products .txt {
    height: 420px;
    left: 0;
  }
  .products .icon {
    margin-left: 40px;
  }
  .products .point {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
  }
  .why .l {
    width: 470px;
  }
  .why .r {
    width: calc(100% - 500px);
  }
  .system .flx {
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
  }
  .system .flx > div {
    width: 48%;
    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;
  }
  .system .flx > div:nth-child(n+3) {
    margin-top: 30px;
  }
  .system .box img {
    width: 300px;
  }
  .why .flx {
    display: none;
  }
  .why .why_phone {
    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;
  }
  .why .why_phone img {
    width: 60%;
  }
  .why .list {
    width: 100%;
    padding: 30px 30px 0;
  }
  .why .des {
    display: block;
    margin-top: 10px;
  }
  .phone_item:nth-child(n+2) {
    margin-top: 30px;
  }
}
@media screen and (max-width: 768px) {
  .bg {
    display: none;
  }
  .phone_bg {
    display: block;
    position: absolute;
    width: 100%;
    bottom: 0;
    left: 0;
  }
  .key .flx {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
  }
  .key .flx > div {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 5vw 0 !important;
  }
  .key .flx > div:first-child {
    padding-top: 0px !important;
  }
  .products .txt {
    height: auto;
    padding: 60px 30px 30px;
  }
  .products .txt > div:last-child {
    margin-top: 8vw;
  }
  .products .box {
    margin-top: 15px;
  }
  .why .box {
    padding: 40px 30px;
  }
  .why .list {
    padding: 30px 0 0;
  }
  .why .why_phone {
    margin-top: 25px;
  }
  .why .intro {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
  }
  .why .l {
    width: 100%;
  }
  .why .r {
    margin-top: 5vw;
    width: 100%;
  }
  .system .box img {
    width: 180px;
  }
  .system .tips {
    margin-top: 60px;
  }
  .system .tips div {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    text-align: center;
    margin: 0 10px;
  }
  .system .tips div::before {
    margin-right: 0;
    margin-bottom: 10px;
  }
  .why .intro .img video {
    display: none;
  }
}
@media screen and (max-width: 410px) {
  .system .flx > div {
    width: 100%;
  }
  .system .flx > div:nth-child(n+2) {
    margin-top: 30px;
  }
}