.sec:nth-child(2n) {
  background: #F9FAFF;
}

.btn-solid {
  margin: 35px auto;
}

.sec1 {
  text-align: center;
}

.sec2 .item-box {
  padding-top: 80px;
}

.sec2 .item {
  width: 260px;
  height: 270px;
  float: left;
  margin-right: 53px;
  background: linear-gradient(0deg, #ABCEFF 0%, #4E96FF 100%);
  border-radius: 16px;
  padding: 101px 18px 0;
  position: relative;
}

.sec2 .item:nth-child(4n) {
  margin-right: 0;
}

.sec2 .item .img-box {
  width: 150px;
  position: absolute;
  left: 50%;
  top: 0;
  transform: translate(-50%, -50%);
}

.sec2 .item .title {
  font-size: 20px;
  color: #fff;
  text-align: center;
}

.sec2 .item .desc {
  font-size: 14px;
  color: #fff;
  line-height: 22px;
  margin-top: 20px;
  text-align: center;
}

.sec3 .item {
  width: 260px;
  height: 321px;
  margin-right: 53px;
  margin-top: 53px;
  background-clip: padding-box, border-box;
  background-origin: padding-box, border-box;
  background-image: linear-gradient(0deg, #fff, #fff), linear-gradient(90deg, #4490FF, #0048E1);
  border: 1px transparent solid;
  border-radius: 10px;
  float: left;
  text-align: center;
}

.sec3 .item:nth-child(4n) {
  margin-right: 0;
}

.sec3 .item:nth-child(-n+4) {
  margin-top: 0;
}

.sec3 .item .img-box {
  width: 100%;
  height: 190px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.sec3 .item .title {
  font-size: 20px;
  color: #333;
  line-height: 32px;
}

.sec3 .item .desc {
  font-size: 14px;
  color: #666;
  line-height: 20px;
  margin-top: 20px;
}

.sec4 {
  text-align: center;
}

.sec4 .title {
  font-size: 18px;
  font-weight: 500;
  color: #333;
  line-height: 32px;
  margin-bottom: 30px;
}

.sec5, .sec5 .sec-content {
  padding: 0;
}

.sec5 .item:nth-child(2n) {
  background: #F9FAFF;
}

.sec5 .item .common-title {
  margin-top: 30px;
  margin-bottom: 10px;
}

.sec5 .item .wh1200 {
  height: 600px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sec5 .item .wh1200 .img-box {
  flex-shrink: 0;
}

.sec5 .item:nth-child(1) .img-box {
  margin-right: 96px;
}

.sec5 .item:nth-child(2) .img-box {
  margin-left: 20px;
}

.sec5 .item .wh1200 .title {
  font-size: 18px;
  color: #333;
  line-height: 30px;
}

.sec5 .item .wh1200 .desc {
  font-size: 16px;
  color: #666;
  margin-top: 10px;
  line-height: 30px;
}