.product_bg {
  background: url(../../static/img/wulian/product_banner.png) no-repeat center center;
}

.section-1 {
  padding: 100px 0;
  text-align: center;
  background-color: #f2f2f2;
}

.section-1 .title {
  text-align: center;
}

.section-1 .title span {
  font-size: 34px;
  color: #333333;
}

.section-1 .title p {
  font-size: 18px;
  color: #666666;
  margin-top: 24px;
}

.section-1 .content {
  margin-top: 39px;
}

.section-1 .content .item {
  background-color: #fff;
  text-align: center;
  padding: 60px 0;
  height: 189px;
  overflow: hidden;
}

.section-1 .content .item span {
  display: block;
  font-size: 24px;
  color: #333;
  margin-top: 19px;
}

.section-1 .content .item p {
  padding: 0 5%;
  font-size: 14px;
  color: #999;
  line-height: 22px;
  margin-top: 40px;
}

.section-2 {
  display: flex;
  flex-direction: column;
}

.section-2 .section-bg .content {
  display: flex;
  justify-content: space-between;
  padding: 100px 0;
}

.section-2 .section-bg .content .left {
  display: flex;
  width: 49%;
  text-align: left;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}

.section-2 .section-bg .content .left span {
  font-size: 34px;
  color: #333;
}

.section-2 .section-bg .content .left p {
  font-size: 16px;
  line-height: 24px;
}

.section-2 .section-bg .content .left a {
  font-size: 18px;
  color: #2a58e5;
}

.section-2 .section-bg .content .right {
  width: 49%;
}

.section-2 .section-bg .content .right img {
  width: 100%;
}

.section-2 .section-bg:nth-child(2n) {
  background-color: #f2f2f2;
}

.section-2 .section-bg:nth-child(2n) .content {
  flex-direction: row-reverse;
}

.section-3 {
  background-color: #f2f2f2;
  padding: 100px 0;
}

.section-3 .title {
  text-align: center;
}

.section-3 .title span {
  font-size: 34px;
  color: #333333;
}

.section-3 .title p {
  font-size: 18px;
  color: #666666;
  margin-top: 24px;
}

.section-3 .content {
  margin-top: 39px;
}

.section-3 .content .item a {
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.section-3 .content .item a img {
  width: 100%;
}

@media screen and (max-width: 768px) {
  .section-2 .section-bg .content {
    padding: 50px 0;
    flex-direction: column;
    align-items: center;
  }
  .section-2 .section-bg .content .left {
    width: 90%;
    margin-bottom: 20px;
  }
  .section-2 .section-bg .content .left span {
    text-align: center;
    margin-bottom: 20px;
  }
  .section-2 .section-bg .content .left p {
    margin-bottom: 20px;
  }
  .section-2 .section-bg .content .left a {
    text-align: right;
  }
  .section-2 .section-bg .content .right {
    width: 90%;
  }
  .section-2 .section-bg:nth-child(2n) {
    background-color: #f2f2f2;
  }
  .section-2 .section-bg:nth-child(2n) .content {
    flex-direction: column;
  }
}