body {
  min-height: 100vh;
}

.pic {
  overflow: hidden;
}

.header {
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  background-color: #fff;
  z-index: 999;
}
.header .w {
  max-width: calc(100% - 100px);
  width: calc(100% - 100px);
}
.header .floor {
  padding: 17px 0 12px;
  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;
}
.header .logo {
  display: block;
  -webkit-box-flex: 0;
      -ms-flex: 0 0 17.4545454545%;
          flex: 0 0 17.4545454545%;
  min-width: 82px;
}
.header .logo a {
  display: block;
  width: 100%;
}
.header .logo a img {
  display: block;
}

.nav .top-column {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
}
.nav .top-column>li {
  position: relative;
  font-size: var(--fs18);
  line-height: 2.6666666667;
  margin: 0 1.8em;
  font-family: PingFangSC, PingFang SC;
  font-weight: 500;
  position: relative;
}
.nav .top-column>li::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  -webkit-transform: translate(-50%, 0);
          transform: translate(-50%, 0);
  width: 0;
  height: 2px;
  background: #00A3F5;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}
.nav .top-column>li:hover::after {
  width: 100%;
}
.nav .top-column>li:hover .sec-column {
  visibility: visible;
  opacity: 1;
  -webkit-transform: translate(-50%, calc(100% + 10px));
          transform: translate(-50%, calc(100% + 10px));
}
.nav .top-column>li.active::after {
  width: 100%;
}
.nav .top-column>li.active>a {
  color: #00A3F5;
}
.nav .top-column>li a {
  color: #333333;
}
.nav .top-column>li a:hover {
  color: #00A3F5;
}
.nav .top-column .sec-column {
  position: absolute;
  left: 50%;
  bottom: 0;
  -webkit-transform: translate(-50%, calc(100% + 30px));
          transform: translate(-50%, calc(100% + 30px));
  background-color: #fff;
  visibility: hidden;
  opacity: 0;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}
.nav .top-column .sec-column li a {
    display: block;
    padding: 0 1em;
  white-space: nowrap;
  font-size: 16px;
}
.nav .top-column .sec-column li::after {
  display: none;
}

.floor-tit {
  text-align: center;
}
.floor-tit span {
  font-size: var(--fs42);
  line-height: 1.4047619048;
  font-family: PingFangSC, PingFang SC;
  font-weight: 600;
  color: #333333;
  font-style: normal;
}
.floor-tit p {
  font-size: var(--fs42);
  line-height: 1.4047619048;
  font-family: PingFangSC, PingFang SC;
  font-weight: 100;
  color: #000000;
  font-style: normal;
}
.floor-tit.white span,
.floor-tit.white p {
  color: #fff;
}
.floor-tit.text-left {
  text-align: left;
}
.floor-tit.gray p {
  color: #333;
}

.footer {
  background: #141414;
  color: #fff;
}
.footer .t {
  padding: 5.8333333333% 0 4.5833333333%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
}
.footer .t .footer-link {
  -webkit-box-flex: 1;
      -ms-flex: 1 0 73.3333333333%;
          flex: 1 0 73.3333333333%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  padding: 0 3% 0 0;
}
.footer .t .footer-link dl dt {
  margin-bottom: 16px;
}
.footer .t .footer-link dl dt a {
  font-size: var(--fs18);
  line-height: 2.5555555556;
  font-family: PingFangSC, PingFang SC;
  font-weight: 500;
  color: #FFFFFF;
  text-align: left;
  font-style: normal;
}
.footer .t .footer-link dl dt a:hover {
  color: #00A3F5;
}
.footer .t .footer-link dl dd a {
  font-size: var(--fs16);
  line-height: 2.75;
  font-family: PingFangSC, PingFang SC;
  font-weight: 400;
  color: #CCCCCC;
  text-align: left;
  font-style: normal;
}
.footer .t .footer-link dl dd a:hover {
  color: #64cafe;
}
.footer .t .footer-lx {
  border-left: 1px dashed #979797;
  -webkit-box-flex: 0;
      -ms-flex: 0 0 auto;
          flex: 0 0 auto;
  padding: 0 0 0 3%;
}
.footer .t .footer-lx .pic {
  margin: 0 0 24px 41px;
  width: 109px;
  max-width: 40%;
}
.footer .t .footer-lx ul {
  white-space: nowrap;
}
.footer .t .footer-lx ul li {

  font-size: var(--fs18);
  line-height: 1.5;
  font-family: PingFangSC, PingFang SC;
  font-weight: 400;
  color: #FFFFFF;
  text-align: left;
  font-style: normal;
  padding: 0.5em 0;
    padding-left: 2.8333333333em;
}
.footer .t .footer-lx ul li:nth-child(1) {
  background: url(../images/footer-dianhua.png) no-repeat left top 0.7em;
  background-size: 1.3333333333em auto;
}
.footer .t .footer-lx ul li:nth-child(2) {
  background: url(../images/footer-youxiang-2.png) no-repeat left center;
  background-size: 1.3333333333em auto;
}
.footer .t .footer-lx ul li:nth-child(3) {
  background: url(../images/footer-lianjiewangzhi.png) no-repeat left center;
  background-size: 1.3333333333em auto;
}
.footer .site-info {
  background: #020001;
  padding: 1em 0;
  font-size: var(--fs16);
  line-height: 1.5;
  text-align: center;
  font-family: PingFangSC, PingFang SC;
  font-weight: 400;
  color: #CCCCCC;
  font-style: normal;
}
.footer .site-info a {
  color: #fff;
}
.footer .site-info a:hover {
  color: #64cafe;
}

.more-btn {
  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;
  width: 136px;
  height: 36px;
  border-radius: 18px;
  border: 1px solid #BDBDBD;
  font-family: PingFangSC, PingFang SC;
  font-weight: 400;
  font-size: 14px;
  color: #333333;
  line-height: 20px;
  text-align: left;
  font-style: normal;
  background-color: #fff;
}
.more-btn:hover {
  background-color: #00A3F5;
  color: #fff;
  border: 1px solid #00A3F5;
}
@media screen and (max-width: 1600px){
    .footer .w{
        width: 80%;
    }
}
@media screen and (max-width: 1300px) {
    .footer .w{
        width: 90%;
    }
  .nav .top-column>li {
    margin: 0 0.5em;
  }
}
.m-meau,
.m-meaugb {
  display: none;
}

@media screen and (max-width: 1200px) {
  .header .w {
    width: 90%;
    max-width: 95%;
  }
  .footer .t {
    padding: 4% 0;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
  }
  .footer .t .footer-lx {
    margin-top: 3%;
    padding: 0;
    -webkit-box-flex: 0;
        -ms-flex: 0 0 auto;
            flex: 0 0 auto;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    border-left: none;
  }
  .footer .t .footer-lx .pic {
    margin: 0 2% 0 0;
  }
}
.m-meau,
.m-meaugb {
  display: none;
}

@media screen and (max-width: 992px) {
  .nav {
    position: fixed;
    left: 0;
    top: 0;
    -webkit-transform: translate(-100%, 0);
            transform: translate(-100%, 0);
    width: 100%;
    height: 100vh;
    background-color: #fff;
    z-index: 9999;
    -webkit-transition: all 0.5s;
    transition: all 0.5s;
  }
  .nav.active {
    -webkit-transform: translate(0%, 0);
            transform: translate(0%, 0);
  }
  .nav ul {
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-align: start;
        -ms-flex-align: start;
            align-items: flex-start;
  }
  .nav .top-column .sec-column {
    position: relative;
    left: 0;
    top: 0;
    bottom: auto;
    -webkit-transform: translate(0);
            transform: translate(0);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    visibility: visible;
    opacity: 0.8;
    -webkit-box-orient: horizontal;
    -webkit-box-direction: normal;
        -ms-flex-direction: row;
            flex-direction: row;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
  }
  .nav .top-column .sec-column li {
    -webkit-box-flex: 0;
        -ms-flex: 0 0 28%;
            flex: 0 0 28%;
  }
  .m-meaugb {
    position: absolute;
    right: 10px;
    top: 10px;
  }
  .m-meau,
  .m-meaugb {
    display: block;
  }
  .m-meau .iconfont,
  .m-meaugb .iconfont {
    font-size: 30px;
  }
}
@media screen and (max-width: 768px) {
  .footer .t .footer-link {
    display: none;
  }
}
@media screen and (max-width: 480px) {
  .footer .site-info {
    font-size: 12px;
  }
  .m-meau,
  .m-meaugb {
    display: block;
  }
  .m-meau .iconfont,
  .m-meaugb .iconfont {
    font-size: 24px;
  }
}