.solution-banner {
  background: url("../images/solution-banner1.png") center top no-repeat;
  background-size: auto 100%;
  position: relative;
}
.solution-banner.b2 {
  background: url("../images/solution-banner2.png") center top no-repeat;
  background-size: auto 100%;
}
.solution-banner.b3 {
  background: url("../images/solution-banner3.png") center top no-repeat;
  background-size: auto 100%;
}
.solution-banner.b4 {
  background: url("../images/solution-banner4.png") center top no-repeat;
  background-size: auto 100%;
}

.recommend {
  padding: 220px 0 100px 0;
}

.nav li.on ul {
  display: block;
  position: absolute;
  top: 80px;
  right: 0;
  display: flex;
  flex-wrap: nowrap;
}
.nav li.on ul::before {
  content: "";
  position: absolute;
  top: 0px;
  right: -999px;
  left: -999px;
  height: 54px;
  background-color: rgba(0, 0, 0, 0.05);
}
.nav li.on ul li {
  display: inline-block;
  vertical-align: top;
  white-space: nowrap;
  position: relative;
}
.nav li.on ul li a {
  color: #666;
  padding: 10px 0;
  display: inline-block;
  vertical-align: top;
  font-size: 16px;
}
.nav li.on ul li a::after {
  bottom: 16px;
}
.nav li.on ul li a.on::before {
  bottom: 16px;
}

.mnav {
  display: none;
}

.banner-text-warp {
  width: 1200px;
  margin: 0 auto;
  position: absolute;
  top: 0;
  left: calc(50% - 600px);
  bottom: 0;
  display: flex;
  align-items: center;
}
.banner-text-warp .box {
  height: 50%;
  width: 680px;
  background-color: #fff;
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  justify-content: center;
  padding-left: 70px;
}
.banner-text-warp .t1 {
  font-size: 38px;
  line-height: 54px;
}
.banner-text-warp .t2 {
  font-size: 24px;
  line-height: 34px;
  padding-top: 20px;
}

.sol-col {
  padding: 80px 0 180px 0;
  color: #000;
}
.sol-col .t1 {
  font-size: 24px;
  line-height: 32px;
}
.sol-col .t2 {
  font-size: 38px;
  line-height: 54px;
  padding: 15px 0 40px 0;
}
.sol-col .tit {
  font-size: 18px;
  color: #949494;
}
.sol-col .conn {
  padding-top: 20px;
  font-size: 18px;
  line-height: 30px;
}
.sol-col .sol-list {
  display: flex;
  justify-content: space-between;
}
.sol-col .sol-left {
  width: 550px;
}
.sol-col .sol-right {
  width: 480px;
}
.sol-col .list {
  padding-top: 20px;
}
.sol-col .list li {
  display: inline-block;
  vertical-align: top;
  width: 49%;
  font-size: 18px;
  line-height: 30px;
  padding-bottom: 30px;
  padding-left: 24px;
  position: relative;
  box-sizing: border-box;
}
.sol-col .list li::before {
  position: absolute;
  top: 9px;
  left: 0;
  content: "";
  width: 12px;
  height: 12px;
  background-color: #FFDE02;
  border-radius: 50%;
}
.sol-col .list li.l1 {
  width: 100%;
}
.sol-col .list.list-r li {
  width: 100%;
}
.sol-col .list.list3 {
  margin-right: -200px;
}
.sol-col .list.list3 li {
  width: 32%;
}
.sol-col .tit2 {
  margin-top: 70px;
}

.about-case {
  padding-bottom: 215px;
}

.tit-sec {
  font-size: 68px;
  padding: 0 0 60px 0;
  text-align: center;
  font-weight: bold;
}

.case-list ul > li {
  padding-bottom: 50px;
}
.case-list .case-box {
  overflow: hidden;
  width: 100%;
  height: 100%;
  display: flex;
  position: relative;
  color: #fff;
}
.case-list .case-box img {
  width: 100%;
}
.case-list .case-box .tit {
  position: absolute;
  left: 30px;
  bottom: 40px;
}
.case-list .case-box .tit span {
  display: inline-block;
  position: relative;
}
.case-list .case-box .tit span::after {
  position: absolute;
  left: 0;
  width: 0;
  bottom: -4px;
  content: "";
  height: 8px;
  background-color: #FFDE02;
  transition: all 0.5s;
}
.case-list .case-box .name {
  font-size: 28px;
  line-height: 40px;
}
.case-list .case-box .desc {
  font-size: 24px;
  line-height: 32px;
}
.case-list .case-box:hover img {
  transform: scale(1.1);
  transition: all 0.5s;
}
.case-list .case-box:hover .tit span::after {
  width: 100%;
}

.img-warp img {
  width: 100%;
}

.solution-timg {
  position: relative;
  line-height: 0;
}
.solution-timg img {
  width: 100%;
}
.solution-timg .text {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1;
  padding-left: 68px;
}
.solution-timg h3 {
  padding-bottom: 10px;
}
.solution-timg h3 span {
  font-size: 28px;
  line-height: 53px;
  color: #fff;
  display: inline-block;
  vertical-align: top;
  position: relative;
}
.solution-timg h3 span::after {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  content: "";
  height: 8px;
  background-color: #FFDE02;
}
.solution-timg h4 {
  font-size: 54px;
  line-height: 96px;
  color: #fff;
}
.solution-timg .alist {
  padding: 10px 0 80px 0;
}
.solution-timg .alist span {
  display: inline-flex;
  vertical-align: top;
  font-size: 18px;
  align-items: center;
  justify-content: center;
  height: 38px;
  padding: 0 16px;
  border: 1px #fff solid;
  color: #fff;
  border-radius: 4px;
  margin-right: 22px;
  cursor: default;
}
.solution-timg .alist span:hover {
  background-color: #fff;
  color: #000;
}

.solution-conn {
  display: flex;
  flex-direction: row;
  align-items: center;
  padding: 70px 0 120px 0;
}
.solution-conn .left {
  width: 50%;
  padding-right: 5%;
}
.solution-conn .left h3 {
  font-size: 26px;
  line-height: 32px;
  color: #000;
  padding-bottom: 32px;
}
.solution-conn .left p {
  font-size: 18px;
  line-height: 30px;
  color: #666;
}
.solution-conn .right {
  width: 50%;
  padding-left: 15%;
}
.solution-conn .right p {
  font-size: 18px;
  line-height: 30px;
  padding: 10px 0 10px 24px;
  position: relative;
  color: #000;
}
.solution-conn .right p::before {
  position: absolute;
  top: 0;
  left: 5px;
  bottom: 0;
  content: "";
  width: 1px;
  background-color: #FFDE02;
}
.solution-conn .right p::after {
  position: absolute;
  left: 0;
  top: 19px;
  content: "";
  width: 12px;
  height: 12px;
  background-color: #FFDE02;
  border-radius: 50%;
}

@media screen and (max-width: 750px) {
  .recommend {
    padding: 150px 50px 20px 50px;
  }
  .recommend .tit {
    font-size: 24px;
  }
  .recommend .text {
    font-size: 36px;
  }
  .nav li.on ul::before {
    background: none;
  }
  .solution-content {
    padding: 0 50px;
  }
  .solution-timg .text {
    padding-left: 30px;
  }
  .solution-timg h4 {
    font-size: 48px;
    line-height: 70px;
    padding-bottom: 40px;
  }
  .solution-conn {
    flex-direction: column;
  }
  .solution-conn .left {
    width: 100%;
  }
  .solution-conn .right {
    width: 100%;
    padding-left: 0;
    padding-top: 50px;
  }
  .mnav {
    display: block;
    padding: 50px 50px 55px 50px;
  }
  .mnav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .mnav li {
    display: inline-block;
    vertical-align: top;
    margin: 15px 0;
    width: calc((100% - 30px) / 3);
    text-align: center;
  }
  .mnav a {
    width: 160px;
    height: 78px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: #999;
    background-color: #f8f8f8;
    border-radius: 20px;
  }
  .mnav a.on {
    color: #000;
    background-color: #FFDE02;
    position: relative;
  }
  .solution-timg {
    border-radius: 20px;
    overflow: hidden;
  }
  .solution-timg .alist {
    display: none;
  }
}