/* 单独处理头部样式 */
.main .header-box {
  background: transparent;
  transition: background-color 0.8s;
  -ms-transition: background-color 0.8s; /* IE 9 */
  -moz-transition: background-color 0.8s; /* Firefox */
  -webkit-transition: background-color 0.8s; /* Safari 和 Chrome */
  -o-transition: background-color 0.8s; /* Opera */
}
.banner {
  height: 520px;
  background: url('../../images/site/banner-bg-1.png') no-repeat center / cover;
}
.banner .container {
  position: relative;
  width: 1200px;
  height: 100%;
  margin: auto;
  padding-top: 168px;
  box-sizing: border-box;
}
.banner .container > .title {
  font-family: PingFangSC-Medium;
  font-weight: 700;
  font-size: 48px;
  color: #17294D;
  line-height: 68px;
  letter-spacing: 2px;
}
.banner .container > .desc {
  font-size: 24px;
  color: #555555;
  line-height: 33px;
  margin-top: 20px;
}
.banner .container > .btn {
  width: 160px;
  height: 48px;
  background: #3377FF;
  box-shadow: 0 10px 20px 0 #3377ff33;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  letter-spacing: 1px;
  cursor: pointer;
  margin-top: 62px;
}
/* 营销 */
.marketing {
  background: #E4EEFF;
}
.marketing .container {
  width: 1200px;
  margin: 0 auto;
  padding: 80px 0;
}
.marketing .container > .title {
  font-family: PingFangSC-Medium;
  font-weight: 700;
  font-size: 36px;
  color: #17294D;
  letter-spacing: 1px;
  text-align: center;
  line-height: 50px;
  margin-bottom: 60px;
}
.marketing .container .list {
  width: 100%;
  display: flex;
  justify-content: space-between;
}
.marketing .container .list .item {
  width: 260px;
  height: 417px;
  background: #FFFFFF;
  border-radius: 8px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 40px;
}
.marketing .container .list .item .icon {
  width: 88px;
  height: 88px;
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  margin-bottom: 24px;
}
.marketing .container .list .item:nth-child(1) .icon {
  background-image: url('../../images/site/marketing-ic-1.png');
}
.marketing .container .list .item:nth-child(2) .icon {
  background-image: url('../../images/site/marketing-ic-2.png');
}
.marketing .container .list .item:nth-child(3) .icon {
  background-image: url('../../images/site/marketing-ic-3.png');
}
.marketing .container .list .item:nth-child(4) .icon {
  background-image: url('../../images/site/marketing-ic-4.png');
}
.marketing .container .list .item .type {
  font-family: PingFangSC-Medium;
  font-weight: 700;
  font-size: 18px;
  color: #17294D;
  letter-spacing: 0;
  text-align: center;
  line-height: 25px;
  margin-bottom: 20px;
}
.marketing .container .list .item .desc {
  font-family: PingFangSC-Regular;
  font-weight: 400;
  font-size: 14px;
  color: #5A5C5F;
  letter-spacing: 0;
  text-align: center;
  margin-bottom: 20px;
}
/* 介绍矩阵 */
.matrix {
  background: #F3F7FF
}
.matrix .part {
  display: flex;
  align-items: center;
}
.matrix .part:nth-child(2n) {
  background: #E4EEFF;
}
.matrix .part:nth-child(2n + 1) .intro {
  flex-direction: row-reverse;
}
.matrix .part:nth-child(1) {
  padding: 80px 0 50px;
}
.matrix .part:nth-child(2) {
  padding: 80px 0;
}
.matrix .part:nth-child(3) {
  padding: 80px 0;
}
.matrix .part:nth-child(4) {
  padding: 80px 0;
}
.matrix .part .intro {
  width: 1200px;
  height: 410px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.matrix .part .intro .img {
  display: block;
}
.matrix .part .intro .img.first {
  width: 550px;
  height: 342px;
}
.matrix .part .intro .img.second {
  width: 590px;
  height: 400px;
}
.matrix .part .intro .img.third {
  width: 490px;
  height: 400px;
}
.matrix .part .intro .img.fourth {
  width: 427px;
  height: 383px;
  margin-left: 60px;
}
.matrix .part .intro .detail {
  width: 400px;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 100px 0;
  box-sizing: border-box;
}
.matrix .part .intro .detail .title {
  font-family: PingFangSC-Medium;
  font-weight: 700;
  font-size: 24px;
  color: #17294D;
  line-height: 33px;
  margin-bottom: 20px;
}
.matrix .part .intro .detail .desc {
  font-family: PingFangSC-Regular;
  font-weight: 400;
  font-size: 14px;
  color: #636B7B;
  line-height: 20px;
}
.matrix .part .intro .detail .fake {
  flex: 1;
}
.matrix .part .intro .detail .btn-wrapper {
  display: flex;
}
.matrix .part .intro .detail .btn-wrapper .btn {
  width: 136px;
  height: 48px;
  border: 1px solid #3377FF;
  border-radius: 4px;
  cursor: pointer;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #3377FF;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1px;
}
.matrix .part .intro .detail .btn-wrapper .btn.active {
  background: #3377FF;
  color: #fff;
  margin-right: 24px;
  box-shadow: 0 10px 20px 0 #3377ff33;
}
/* 评测 */
.survey {
  height: 411px;
  padding-top: 93px;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: url('../../images/site/survey-bg-1.png') no-repeat center / cover;
}
.survey > .title {
  font-family: PingFangSC-Medium;
  font-weight: 700;
  font-size: 36px;
  color: #17294D;
  letter-spacing: 0;
  text-align: center;
  line-height: 50px;
  margin-bottom: 24px;
}
.survey > .desc {
  font-family: PingFangSC-Regular;
  font-weight: 400;
  font-size: 20px;
  color: #535E75;
  letter-spacing: 0;
  text-align: center;
  line-height: 28px;
  margin-bottom: 75px;
}
.survey .btn-wrapper {
  display: flex;
  justify-content: center;
}
.survey .btn-wrapper .btn {
  width: 136px;
  height: 48px;
  border: 1px solid #3377FF;
  border-radius: 4px;
  cursor: pointer;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #3377FF;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 1px;
}
.survey .btn-wrapper .btn.active {
  background: #3377FF;
  color: #fff;
  margin-right: 24px;
  box-shadow: 0 10px 20px 0 #3377ff33;
}