.banner-introduce {
  width: 600px;
  margin-top: 210px;
}



.banner-title .title-img {
  height: 82px;
  margin: auto 3px auto -10px;
}

.banner-desc {
  width: 480px;
  margin-top: 36px;
  color: #5f5f5f;
  font-size: 22px;
  font-weight: 300;
  letter-spacing: 4px;
  line-height: 40px;
  text-align: justify;
}

.banner-guide-li {
  display: flex;
  justify-content: space-between;
  margin-top: 60px;
}

.banner-guide-li li {
  overflow: hidden;
  height: 340px;
  width: 25%;
  backdrop-filter: blur(1px);
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
}

.banner-guide-li .banner-guide-item {
  background-size: contain;
  height: 340px;
  background-position: center top;
  background-repeat: no-repeat;
}

.banner-guide-li .banner-guide-item:nth-child(1) {
  background-image: url('https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/ai-solution/banner-guide-icon1.png');
}

.banner-guide-li .banner-guide-item:nth-child(2) {
  background-image: url('https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/ai-solution/banner-guide-icon2.png');
}

.banner-guide-li .banner-guide-item:nth-child(3) {
  background-image: url('https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/ai-solution/banner-guide-icon3.png');
}

.banner-guide-li .banner-guide-item:nth-child(4) {
  border-radius: 8px;
  background-image: url('https://cloudpnrcdn.oss-cn-shanghai.aliyuncs.com/hfwebsite/new-public/images/ai-solution/banner-guide-icon4.png');
}

.banner-guide-li .ai-family-title {
  margin-top: 25px;
  text-align: center;
  height: 30px;
  font-family: PingFangSC-Medium;
  font-weight: 500;
  font-size: 20px;
  color: #333333;
  letter-spacing: 0;
  margin-left: 40px;
}

.banner-guide-li .ai-family-desc {
  font-family: PingFangSC-Regular;
  font-weight: 400;
  font-size: 12px;
  color: #5F5F5F;
  letter-spacing: 0;
  margin-left: 37px;
  margin-right: 55px;
  text-align: left;
  line-height: 24px;
  position: absolute;
  bottom: 58px;
}


@media screen and (max-width: 1200px) {
  .banner-guide-li .ai-family-desc {
    bottom: 78px;
  }
}

.banner-guide-li li>img {
  width: 100px;
  height: 100px;
  margin: 26px auto 15px
}

.banner-guide-title {
  overflow: hidden;
  margin: 12px auto 0 auto;
  color: #333;
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0;
  line-height: 34px;
  text-align: center;
}

/* main内容 */


.main-section-2 {
  padding-top: 150px;
  padding-bottom: 120px;
  background-position: bottom;
  background-size: cover;
}

.main-section-2 .section-ul {
  position: relative;

  max-width: 1160px;
}

.main-section-2 .section-ul li {
  position: relative;
  z-index: 1;
  display: flex;
  width: 554px;
  height: 114px;
  align-items: center;
  margin-bottom: 16px;
  background-image: linear-gradient(228deg, #ebf3fd 1%, #f6fbff33 97%);
  border-radius: 8px;
  cursor: pointer;
}

.main-section-2 .section-ul .section-li-active {
  background-image: none;
}

.main-section-2 .section-ul .move-animate-bg {
  position: absolute;
  z-index: 0;
  border-radius: 8px;
}

.main-section-2 .section-ul .move-animate-bg-1 {
  position: absolute;
  top: 0;
  left: 0;
  width: 554px;
  height: 114px;
  background-image: linear-gradient(-76deg, #86bdfe 14%, #f6fbff33 100%);
  box-shadow: 0 10px 20px 0 #0000000a;
}

.main-section-2 .section-guide {
  position: relative;
  margin-top: 64px;
  width: 100%;
  height: 550px;
  margin: 0 auto;
}

.main-section-2 .section-guide-left {
  display: flex;
  flex-direction: row;

  padding: 0 65px;
  max-width: 1160px;
  margin: auto;
  margin-bottom: 20px;
}

.main-section-2 .section-guide-left-item {
  display: flex;
  flex-direction: column;
  margin-right: 56px;
}

.main-section-2 .section-guide-left-item-title {
  font-family: PingFangSC-Regular;
  font-weight: 400;
  font-size: 14px;
  color: #5F5F5F;
  letter-spacing: 0;
  line-height: 24px;
}

.main-section-2 .section-guide-left-item-desc {
  font-family: DINAlternate-Bold;
  font-weight: 700;
  font-size: 32px;
  color: #333333;
}

.left-item-desc-box {
  display: flex;
  flex-direction: row;
}

.main-section-2 .section-li-icon {
  width: 60px;
  height: 60px;
  margin: 9px 12px auto 12px;
}

.main-section-2 .section-li-title {
  margin-top: -10px;
  color: #333;
  font-size: 22px;
  font-weight: 600;
  line-height: 30px;
}

.main-section-2 .guide-li-desc {
  margin-top: 12px;
  color: #5f5f5f;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 24px;
}

.main-section-2 .guide-right {
  z-index: 10;
  max-width: 1160px;
  position: relative;
  right: 120px;
  top: -62px;
}

.main-section-2 .section-guide-sub {

  padding: 0 65px;
  display: flex;
  max-width: 1160px;
  position: relative;
  margin: auto;
}

.main-section-2 .guide-right>img {
  position: absolute;
  height: 455px;
  opacity: 0;
}

.main-section-2 .guide-right>img.img-active {
  opacity: 1;
}


@keyframes animation-opacity-img {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}



.main-section-2 .section-title {
  overflow: hidden;
  width: 1160px;
  height: 50px;
  margin: 0 auto;
  color: #333;
  font-size: 36px;
  font-weight: 600;
  letter-spacing: 0;
}

.main-section-2 .main-section-box .section-title {
  display: inline-block;
  overflow: hidden;
  height: 50px;
  margin-left: 350px;
  color: #333;
  font-size: 36px;
  font-weight: 600;
  letter-spacing: 0;
}

.main-section-2 .main-section-box {
  width: 100%;
}


.main-section-2 .main-section-box .section-guide .section-left {
  width: 280px;
  padding-top: 195px;
}


@keyframes shadowAnimation {
  0% {
    box-shadow: 0 0 0 rgba(0, 0, 0, 0);
    /* 初始状态，无阴影 */
  }

  50% {
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    /* 中间状态，添加阴影 */
  }

  100% {
    box-shadow: 0 0 0 rgba(0, 0, 0, 0);
    /* 结束状态，无阴影 */
  }
}


.section-guide-head {
  font-family: PingFangSC-Semibold;
  font-weight: 600;
  font-size: 36px;
  padding: 0 65px;
  margin: 0 auto;
  max-width: 1160px;
  color: #333333;
}

.section-guide-second-title {
  font-family: PingFangSC-Regular;
  font-weight: 400;
  font-size: 16px;
  padding: 0 65px;
  color: #0276FF;

  max-width: 1160px;

  margin: 25px auto 50px;
}


/* 淡入x轴移动左到右 */

@keyframes fadeInAndMoveLeftToRight {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* 淡入x轴移动右到左 */

@keyframes fadeInAndMoveRightToLeft {
  from {
    opacity: 0;
    transform: translateX(0);
  }

  to {
    opacity: 1;
    transform: translateX(-20px);
  }
}

.main-section-3 {
  display: flex;
  justify-content: center;
}

.main-section-3-bg {
  width: 1160px;
  height: 1300px;
  z-index: 10;
  background-size: contain;
}

.left-fadeinline {
  flex: 1;
  height: 93px;
  margin-right: -10px;
  transform: scaleX(-1);
  background-image: linear-gradient(90deg, #CFFAFF 0%, #f1feff00 100%);
}

.right-fadeinline {
  flex: 1;
  height: 96px;
  height: 93px;
  position: relative;
  left: -32px;
  opacity: 0.25;
  transform: scaleX(-1);
  background-image: linear-gradient(270deg, #FAB011 2%, #f9aa1000 100%);
}

.main-section-4 {
  width: 100%;
  margin-top: 120px;
  padding-bottom: 220px;
  background: #F7F9FF;
  background-image: linear-gradient(173deg, #fafbffb3 11%, #eaf1ff4a 65%, #f1f5ff03 99%);
}

.main-section-4-title {
  max-width: 1160px;
  padding: 60px 65px;
  margin: 0 auto;
  font-family: PingFangSC-Semibold;
  font-weight: 600;
  font-size: 36px;
  color: #333333;
}

.main-section-4-bg {
  max-width: 1160px;
  margin: 0 auto;
  height: 730px;
  background-size: contain;
}

.free-service {
  margin-top: -60px;
}