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



.banner-animate {
  position: absolute;
  top: 140px;
  left: 48.96%;
}

@media (min-width: 1280px) {
  .banner-animate {
    left: 41%;
  }
}

@media (min-width: 1281px) {
  .banner-animate {
    left: 48.96%;
  }
}

.banner-animate .banner-main {
  position: absolute;
  z-index: 12;
  top: 0;
  left: 0;
  width: 743px;
  height: 458px;
  background:
    url(https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/engineering-platform/banner-main.png) no-repeat center;
  background-size: contain;
}

.banner-animate .banner-main .section-1 {
  position: absolute;
  z-index: 14;
  top: 298px;
  right: 75px;
  width: 72px;
  height: 75px;
  background:
    url(https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/engineering-platform/banner-main-section-1.png) no-repeat center;
  background-size: contain;
}

.banner-animate .banner-main .section-2 {
  position: absolute;
  z-index: 15;
  top: 293px;
  right: 50px;
  width: 126px;
  height: 92px;
  background:
    url(https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/engineering-platform/banner-main-section-2.png) no-repeat center;
  background-size: contain;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

.banner-animate .banner-main .section-3 {
  position: absolute;
  z-index: 13;
  top: 263px;
  right: 50px;
  width: 126px;
  height: 92px;
  background:
    url(https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/engineering-platform/banner-main-section-3.png) no-repeat center;
  background-size: contain;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

.banner-animate .banner-main .section-4 {
  position: absolute;
  z-index: 16;
  top: 355px;
  right: 31px;
  width: 165px;
  height: 50px;
  background:
    url(https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/engineering-platform/banner-main-section-4.svg) no-repeat center;
  background-size: contain;
  transition: opacity 0.3s ease-in-out;
}

.banner-animate .banner-main .section-4.section-active {
  opacity: 0.3;
}

.banner-animate .banner-main .section-5 {
  position: absolute;
  z-index: 16;
  top: 336px;
  right: 31px;
  width: 165px;
  height: 52px;
  background:
    url(https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/engineering-platform/banner-main-section-5.svg) no-repeat center;
  background-size: contain;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

.banner-animate .banner-main .section-6 {
  position: absolute;
  z-index: 14;
  top: 275px;
  right: 147px;
  width: 149px;
  height: 77px;
  background:
    url(https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/engineering-platform/banner-main-section-6.png) no-repeat center;
  background-size: contain;
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

.banner-animate .banner-main .section-2.section-active,
.banner-animate .banner-main .section-3.section-active,
.banner-animate .banner-main .section-5.section-active,
.banner-animate .banner-main .section-6.section-active {
  opacity: 1;
}

.banner-introduce {
  margin-top: 218px;
}

.banner-title {
  display: flex;
}

.banner-title img {
  width: 384px;
  height: 83px;
  margin-left: -10px;
}

.banner-desc {
  width: 480px;
  margin-top: 12px;
  color: #5f5f5f;
  font-size: 22px;
  font-weight: 300;
  letter-spacing: 4px;
  line-height: 40px;
  text-align: justify;
}

.banner .mask {
  position: absolute;
  top: 452px;
  left: 0;
  width: 100%;
  height: 415px;
  background:
    url(https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/engineering-platform/mask.png) no-repeat center;
  background-size: 100% 100%;
}

/* main内容 */
.main {
  position: relative;
  z-index: 10;
  margin: 0 auto;
}

.main-section-1 {
  width: 1160px;
  margin: -50px auto 0 auto;
}

.main-section-1 .section-title {
  color: #333;
  font-size: 36px;
  font-weight: 600;
}

.main-section-1 .section-li {
  position: relative;
  display: flex;
  justify-content: space-between;
  margin-top: 64px;
  margin-bottom: 80px;
}

.main-section-1 .section-li li {
  position: relative;
  width: 370px;
  height: 265px;
  background-image: linear-gradient(180deg, #ebf9fd 0%, #fff 100%);
  border-radius: 8px;
  box-shadow: 0 2px 16px 0 #1b518714;
  text-align: center;
}

.main-section-1 .section-li-icon {
  width: 72px;
  height: 72px;
  margin: 56px auto 12px auto;
}

.main-section-1 .section-li-title {
  height: 30px;
  color: #333;
  font-size: 22px;
  font-weight: 600;
  letter-spacing: 0;
  text-align: center;
}

.main-section-1 .section-li-desc {
  margin: 15px auto;
  color: #5f5f5f;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 24px;
}

.main-section-2 {
  margin-top: 150px;
}

.main-section-2 .section-head {
  width: 1160px;
  margin: 0 auto;
  color: #333;
}

.main-section-2 .section-head .section-title {
  font-size: 36px;
  font-weight: 600;
}

.main-section-2 .section-head .section-desc {
  margin-top: 24px;
  font-size: 16px;
  font-weight: 300;
}

.main-section-2 .section-guide {
  width: 1160px;
  margin: 0 auto;
}

.main-section-2 .section-guide .section-guide-img {
  width: 1160px;
  max-width: 100%;
  padding-top: 60px;
  margin: 0 auto;
}

.main-section-3 {
  margin-top: 150px;
}

.main-section-3 .section-box {
  width: 1160px;
  margin: 144px auto 0 auto;
}

.main-section-3 .section-title {
  overflow: hidden;
  height: 50px;
  color: #333;
  font-size: 36px;
  font-weight: 600;
}

.main-section-3 .section-video {
  text-align: center;
}

.main-section-4 {
  height: 784px;
  padding-top: 150px;
  background:
    url(https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/engineering-platform/section2-section-bg1.png) no-repeat center;
}

.main-section-4 .section-title {
  overflow: hidden;
  width: 1160px;
  height: 50px;
  margin: 0 auto;
  color: #333;
  font-size: 36px;
  font-weight: 600;
}

.main-section-4 .section-box {
  width: 1160px;
  margin: 60px auto 0;
  background: url(https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/engineering-platform/section4-bg.png) no-repeat;
  background-size: cover;
}

.main-section-4 .section-box .section-guide {
  display: flex;
  width: 1160px;
  height: 420px;
  justify-content: flex-end;
  margin-top: 64px;

  /* box-shadow: -10px 0 25px 0 rgba(0, 0, 0, 0.04); */
  border-radius: 8px;
}

.main-section-4 .section-box .section-guide .section-right {
  display: flex;
  width: 550px;
  height: 420px;
  box-sizing: border-box;
  flex-direction: column;
  justify-content: center;
  padding-right: 60px;
}

.main-section-4 .section-box .section-guide .section-right .title {
  display: flex;
  margin-bottom: 17px;
  color: #333;
  font-size: 30px;
  font-weight: 500;
}

.main-section-4 .section-box .section-guide .section-right img {
  width: 46px;
  height: 46px;
  margin-right: 16px;
}

.main-section-4 .section-box .section-guide .section-right .content {
  padding-bottom: 14px;
  color: #5f5f5f;
  font-size: 16px;
  letter-spacing: 0;
  line-height: 30px;
}

.main-section-4 .section-box .section-guide .section-right .content:last-of-type {
  padding-bottom: 0;
}

.default-video {
  width: 885px;
  height: 498px;
  margin: 64px auto 0 auto;
  background: #d8d8d8;
  border-radius: 8px;
  box-shadow: 0 24px 80px 0 rgba(6, 59, 121, 0.16);
}

.plyr--video {
  width: 885px;
  height: 498px;
  margin: 64px auto 0 auto;
  background: #d8d8d8;
  border-radius: 8px;
  box-shadow: 0 24px 80px 0 rgba(6, 59, 121, 0.16);
}

.plyr__video-wrapper {
  background: #d8d8d8 !important;
}

.plyr--full-ui.plyr--video .plyr__control--overlaid {
  width: 120px;
  height: 120px;
  border: 1px solid #fff;
  background: #0000004d;
}

.plyr--full-ui.plyr--video .plyr__control--overlaid:hover {
  border: 1px solid #fff;
  background: #0000004d;
}

.plyr--full-ui.plyr--video .plyr__control--overlaid svg {
  left: 30px;
  width: 40px;
  height: 48px;
}

.free-service {
  margin-top: -64px;
}