nav {
  position: absolute;
}

.banner {
  position: relative;
  z-index: 9;
  top: 0;
  overflow: hidden;
  width: 100%;
  height: 670px;
  background: url() no-repeat center;
  background-size: cover;
}

.banner::after {
  position: absolute;
  bottom: -155px;
  left: 0;
  display: block;
  width: 100%;
  height: 340px;
  background: url('https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/common/banner-mask.png') no-repeat center;
  content: '';
}

.banner-section {
  padding: 0;
}

.banner-introduce {
  margin-top: 182px;
}

.banner-title img {
  width: 445px;
}

.banner-desc {
  margin-top: 30px;
  color: #5f5f5f;
  font-size: 19px;
  font-weight: 300;
  letter-spacing: 1px;
  line-height: 32px;
}

.intro-features {
  position: relative;
  z-index: 10;
  display: flex;
  width: 1160px;
  align-items: center;
  justify-content: space-around;
  margin: -130px auto 60px;
}

.intro-item {
  position: relative;
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.intro-item::after {
  position: absolute;
  top: 15px;
  right: 0;
  width: 1px;
  height: 68px;
  background-color: #979797;
  content: '';
}

.intro-item:last-child::after {
  display: none;
}

.intro-item img {
  height: 40px;
}

.intro-item p {
  margin-top: 10px;
  color: #5f5f5f;
  font-size: 19px;
  font-weight: 300;
  letter-spacing: 1px;
  line-height: 32px;
}

/* main内容 */

.main-section-1 {
  width: 1160px;
  padding-top: 120px;
  margin: 0 auto;
  text-align: center;
}

.section-title {
  margin-bottom: 8px;
  color: #333;
  font-size: 34px;
  font-weight: 600;
  text-align: left;
}

.section-desc {
  margin-bottom: 60px;
  color: #666;
  font-size: 15px;
  font-weight: 300;
  letter-spacing: 2px;
  line-height: 29px;
  text-align: center;
}

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

.main-section-1 .section-guide {
  display: flex;
  width: 1160px;
  justify-content: space-between;
}

.main-section-1 .section-ul {
  width: 485px;
  margin-top: 30px;
}

.main-section-1 .section-ul li {
  display: flex;
  padding: 30px 0;
  border-bottom: 1px solid #d6d6da;
  text-align: left;
}

.main-section-1 .section-ul li .section-li-icon {
  width: 49px;
  height: 49px;
  margin-right: 42px;
}

.main-section-1 .section-ul li .section-li-title {
  color: #333;
  font-size: 21px;
  font-weight: 600;
}

.main-section-1 .section-ul li .guide-li-desc {
  margin-top: 21px;
  color: #5f5f5f;
  font-size: 13px;
  letter-spacing: 0;
  line-height: 23px;
}

.main-section-1 .guide-right img {
  width: 615px;
  height: 562px;
}

.main-section-2 {
  width: 1160px;
  margin: 145px auto 0;
  text-align: left;
}

.main-section-2 .section-title {
  margin-bottom: 60px;
}

.main-section-2 img {
  width: 1160px;
}

.main-section-3 {
  width: 100%;
  height: 663px;
  margin-top: 190px;
  background: url('https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/api-sdk/section3-bg.png') no-repeat center center;
  background-size: contain;
}

.main-section-3 .section-title {
  width: 1160px;
  margin: 0 auto;
}

.main-section-3 img {
  width: 1160px;
  margin: 60px auto 0;
}

.main-section-4 {
  width: 1160px;
  margin: 80px auto 0;
}

.main-section-4 .section-box img {
  width: 100%;
  margin-top: 60px;
}

.main-section-4 .section-ul {
  display: flex;
  margin-top: 150px;
  gap: 30px;
}

.main-section-4 .section-li {
  display: flex;
  width: 564px;
  height: 251px;
  box-sizing: border-box;
  padding: 53px 46px;
  background-image: linear-gradient(0deg, #f3fbfe 0%, #fff 100%);
  border-radius: 8px;
  gap: 39px;
}

.main-section-4 .section-li-icon {
  width: 144px;
  height: 144px;
}

.main-section-4 .section-li-title {
  display: flex;
  margin-top: 16px;
  margin-bottom: 10px;
}

.main-section-4 .section-li-num {
  height: 53px;
}

.main-section-4 .section-li-arrow {
  height: 47px;
  margin-left: 8px;
}

.main-section-4 .guide-li-desc1 {
  color: #5f5f5f;
  font-size: 19px;
  font-weight: 300;
  letter-spacing: 1px;
  line-height: 32px;
}

.main-section-4 .guide-li-desc2 {
  margin-top: 6px;
  color: #666;
  font-size: 15px;
  letter-spacing: 0;
  line-height: 29px;
}

.main-section-4 .guide-li-desc2 span {
  color: #000;
  font-size: 21px;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 29px;
}

.main-section-5 {
  width: 1160px;
  margin: 152px auto 170px;
}

.main-section-5 .section-ul {
  display: flex;
  margin-top: 60px;
  gap: 30px
}

.main-section-5 .section-li {
  display: flex;
  width: 366px;
  height: 252px;
  box-sizing: border-box;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 46px 0;
  background-image: linear-gradient(180deg, #ebf9fd 0%, #fff 100%);
  border-radius: 8px;
  box-shadow: 0 2px 15px 0 #1b518714;
}

.main-section-5 .section-li-icon {
  width: 68px;
  height: 68px;
  margin-bottom: 23px;
}

.main-section-5 .section-li-title {
  margin-bottom: 14px;
  color: #333;
  font-size: 21px;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 32px;
  text-align: center;
}

.main-section-5 .guide-li-desc {
  color: #5f5f5f;
  font-size: 13px;
  letter-spacing: 0;
  line-height: 23px;
  text-align: center;
}