* {
  margin: 0;
  padding: 0;
  list-style: none;
  font-style: normal;
  box-sizing: border-box;
}

@font-face {
  font-family: Alibaba PuHuiTi;
  src: url("https://sp-1359645131.cos.ap-beijing.myqcloud.com/frontend/font/AlibabaPuHuiTi-3-55-Regular.ttf");
}

body {
  font-family: Alibaba PuHuiTi;
}

.relative {
  position: relative;
}

.flex {
  display: flex;
}

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

.justify-around {
  justify-content: space-around;
}

.justify-start {
  justify-content: flex-start;
}

.justify-end {
  justify-content: flex-end;
}

.align-center {
  align-items: center;
}

.align-start {
  align-items: flex-start;
}

.align-end {
  align-items: flex-end;
}

.flex-no-wrap {
  flex-wrap: nowrap;
}

.flex-wrap {
  flex-wrap: wrap;
}

.main {
  position: relative;
  overflow: hidden;
}

section {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.kv-content-1 {
  background: linear-gradient(to bottom, #86c5ff 0%, #fcfdff 100%);
}

.kv-content-2 {
  background: #fcfdff;
  padding-top: 150px;
}

.kv-content-3 {
  background: #f6faff;
  padding-top: 150px;
}

.kv-content-4 {
  padding-top: 80px;
}

.kv-content-7 {
  padding: 220px 0 260px;
}

.img {
  font-size: 0;
  text-align: center;
}
.t-img {
  width: 505px;
}
.p-img {
  width: 634px;
}
.img-1 {
  width: 690px;
  margin: 0 auto;
}
.f-img {
  width: 499px;
  margin-left: 20px;
}
.img img {
  width: 100%;
}

.content {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 20;
}

.ac-pc {
  width: 1147px;
  position: absolute;
  bottom: -0;
  left: 50%;
  transform: translateX(-50%);
}

.circle {
  position: absolute;
  width: 300px;
  height: 300px;
  background: #389eff;
  filter: blur(250px);
  border-radius: 50%;
  bottom: -30px;
  right: -30px;
  z-index: 10;
}

.kv-content-5 .circle {
  right: auto;
  left: -30px;
}

.title-box {
  padding-right: 190px;
}
.title {
  font-size: 106px;
  color: #172634;
  letter-spacing: -0.9px;
  font-weight: bold;
  line-height: 1;
}
.smail-title {
  font-size: 36px;
  color: #666666;
  letter-spacing: 4px;
  line-height: 1;
  margin: 20px 0 60px;
}
.qrcode {
  width: 120px;
  margin-right: 20px;
}
.btn {
  width: 180px;
  height: 50px;
  border-radius: 45px;
  font-size: 16px;
  color: #ffffff;
  text-decoration: none;
}
.android {
  background: #397eff;
  cursor: pointer;
}
.ios {
  background: #000000;
  margin-top: 15px;
}
.icon {
  width: 15px;
  margin-right: 7px;
}

nav {
  background: #86c5ff;
  padding: 30px 0;
  width: 100%;
  position: relative;
  transition: all 0.3s;
}

nav.fixed {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  padding: 10px 0;
}
.logo {
  width: 25px;
}
.logo-text {
  font-size: 20px;
  color: #000000;
  margin-left: 8px;
  font-weight: bold;
  letter-spacing: -0.27px;
}

.nav {
  font-size: 18px;
  line-height: 25px;
}
.nav a {
  color: #333333;
  text-decoration: none;
}
.nav .item {
  cursor: pointer;
  position: relative;
}
.nav .item::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 50%;
  height: 2px;
  background: transparent;
  border-radius: 2px;
}
.nav .item.active::after {
  background: #f3db49;
}
.nav .item:not(:first-child) {
  margin-left: 130px;
}

.c-first .content {
  padding-bottom: 200px;
  border-bottom: 1px solid #d8d8d8;
}
.contact-txt {
  width: 720px;
  font-size: 24px;
  color: #899aa8;
  text-align: justify;
}
.contact-title {
  font-size: 60px;
  color: #172634;
  font-weight: bold;
  margin-bottom: 30px;
}
.c-qrdode {
  width: 295px;
  font-size: 30px;
  text-align: center;
  color: #666666;
  position: relative;
  top: 100px;
}
.c-qrdode .img {
  margin-bottom: 35px;
}

.qr-box {
  text-align: center;
  font-size: 24px;
  color: #666666;
}

.qr-box .img {
  margin-bottom: 35px;
  border-radius: 16px;
  box-shadow: 0px 4px 60px 0px rgba(113, 177, 255, 0.3);
}

.qr-box:last-child {
  margin-top: 100px;
}

.c-second {
  padding: 40px 0;
}
.c-second .content {
  gap: 30px;
}
.c-second .content > div {
  flex: 1;
  background: #ffffff;
  border-radius: 60px;
  padding: 50px 30px;
}
.c-second .content:last-child > div {
  background: none;
}
.c-second .content .icon {
  width: 80px;
  margin: 0 auto 40px;
  border-radius: 50%;
}

.kv-content-1 .content {
  padding-bottom: 170px;
}

.txt-box {
  width: 505px;
}
.txt-box h2 {
  font-size: 60px;
  color: #3d3d3d;
  padding-bottom: 45px;
  position: relative;
}
.txt-box h2::after {
  content: "";
  position: absolute;
  bottom: 20px;
  left: 0;
  width: 89px;
  height: 10px;
  border-radius: 200px;
  background: #f3db49;
}
.txt-box1 {
  text-align: center;
  margin: 0 auto 40px;
}
.txt-box1 h1::after {
  left: 50%;
  transform: translateX(-50%);
}
.txt-box h3 {
  font-size: 24px;
  font-weight: normal;
  color: #666666;
}

@media only screen and (max-width: 1200px) {
  .content {
    max-width: 992px;
  }
  .kv-content-2 {
    padding-top: 123px;
  }
  .kv-content-3 {
    padding-top: 123px;
  }
  .kv-content-4 {
    padding-top: 65.5px;
  }
  .kv-content-7 {
    padding: 180px 0 213px;
  }
  .kv-content-1 .content {
    padding-bottom: 140px;
  }
  .ac-pc {
    width: 990px;
  }
  .f-img {
    width: 409px;
  }
  .t-img {
    width: 414px;
  }
  .p-img {
    width: 520px;
  }
  .img-1 {
    width: 558px;
  }

  .title-box {
    padding-right: 155px;
  }
  .title {
    font-size: 87px;
  }
  .smail-title {
    font-size: 29px;
    margin: 16px 0 50px;
  }
  .txt-box {
    width: 400px;
  }
  .txt-box h2 {
    font-size: 48px;
  }
  .txt-box h3 {
    font-size: 20px;
  }
}

@media only screen and (max-width: 992px) {
  .content {
    max-width: 768px;
  }

  .kv-content-1 .content {
    padding-bottom: 110px;
  }
  .kv-content-2 {
    padding-top: 96px;
  }
  .kv-content-3 {
    padding-top: 96px;
  }
  .kv-content-4 {
    padding-top: 51px;
  }
  .kv-content-7 {
    padding: 140px 0 166px;
  }
  .ac-pc {
    width: 790px;
  }
  .f-img {
    width: 319px;
  }
  .t-img {
    width: 323px;
  }
  .p-img {
    width: 406px;
  }
  .img-1 {
    width: 420px;
  }

  .title-box {
    padding-right: 40px;
  }
  .title {
    font-size: 58px;
  }
  .smail-title {
    font-size: 22px;
    margin: 12px 0 38px;
  }

  .c-second .content .icon {
    width: 60px;
  }

  .txt-box {
    width: 340px;
  }
  .txt-box h2 {
    font-size: 40px;
  }
  .txt-box h3 {
    font-size: 16px;
  }
}