* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

a {
  text-decoration: none;
  cursor: pointer;
  display: inline-block;
}

ul,
li {
  list-style: none;
}

.w {
  width: 1200px;
  margin: 0 auto;
}

.active::after {
  content: '';
  display: block;
  width: 100%;
  height: 3px;
  background: #f3efd4;
  border-radius: 2px;
}

.nav {
  height: 80px;
  background: #401600;
}

.nav .w {
  display: flex;
  align-items: center;
}

.nav h1 {
  font-size: 30px;
  font-family: PingFang SC;
  font-weight: 400;
  color: #f3efd4;
  line-height: 80px;
  display: flex;
  align-items: center;
  float: left;
  margin-right: 60px;
}

.nav h1::before {
  background: url(../images/pc/logo.png) no-repeat;
  background-size: contain;
  content: '';
  display: block;
  width: 38px;
  height: 44px;
  margin-right: 15px;
}

.nav ul {
  float: left;
}

.nav ul li {
  float: left;
  height: 100%;
  padding: 0 20px;
  line-height: 38px;
}

.nav ul li a {
  font-size: 16px;
  font-family: PingFang SC;
  font-weight: 400;
  color: #f3efd4;
}

.banner {
  background: url(../images/pc/download_banner.webp) no-repeat center;
  background-size: cover;
  height: 540px;
}

.section1 {
  background-color: #f8f0e3;
  padding-top: 73px;
  padding-bottom: 86px;
}

.section1 .title {
  width: 613px;
  height: 82px;
  object-fit: contain;
  display: block;
  margin: auto;
}

.section1 .row1 {
  margin: 0 auto;
  margin-top: 64px;
  display: flex;
  justify-content: center;
}

.section1 .row2 {
  margin: 0 auto;
  margin-top: 47px;
  display: flex;
  justify-content: center;
}

.section1 .reward {
  height: 293px;
  width: 393px;
  cursor: pointer;
  transition: all ease-in-out 0.3s;
}

.section1 .reward:hover {
  transform: scale(1.1);
}

.section .row1 .reward img+img,
.section .row2 .reward img+img {
  margin-left: 7px;
}

.section2 {
  background: url(/images/pc/section2-bg.webp) no-repeat;
  background-size: cover;
  padding-top: 77px;
  padding-bottom: 94px;
}

.section2 .title-banner {
  width: 593px;
  height: 82px;
  margin: 0 auto;
  display: block;
  margin-bottom: 80px;
}

.section4 .title-banner {
  width: 713px;
  height: 82px;
  margin: 0 auto;
  display: block;
  margin-bottom: 80px;
}

.section2 .content {
  padding: 16px;
}

.section4 .content {
  padding: 24px;
}

.section4 .grid,
.section2 .grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: 1200px;
  margin: auto;
}

.section4 .grid-item,
.section2 .grid-item {
  border-radius: 12px;
  width: 285px;
  height: 360px;
  background-color: #fff;
  transition: all ease-in-out 0.3s;
}

.section2 .grid-item:hover {
  transform: translateY(-10px);
}

.section2 .pic {
  width: 285px;
  height: 180px;
}

.section4 .title,
.section2 .title {
  color: #dc2a18;
  font-size: 30px;
  text-align: center;
  margin-bottom: 8px;
}

.section4 .title {
  margin-bottom: 16px;
}

.section4 .description,
.section2 .description {
  color: #888;
  font-size: 20px;
  text-align: center;
}

.section3 {
  background-color: #f8f0e3;
  padding-bottom: 78px;
  position: relative;
}

.section3 img.main {
  width: 100%;
  max-width: 1198px;
  height: 811px;
  object-fit: contain;
  display: block;
  margin: auto;
}

.section3 img.hint {
  width: 365px;
  height: 28px;
  display: block;
  margin: auto;
}

.section3 .buttons {
  display: flex;
  justify-content: center;
  margin-top: 34px;
}

/* .section3 .buttons img + img {
  margin-left: 55px;
} */

.section3 .buttons .btn-ios-download {
  margin-left: 55px;
}

.section3 .buttons img {
  width: 290px;
  height: 62px;
  cursor: pointer;
}

.section4 {
  background: url(../images/pc/section4-bg.webp) no-repeat center;
  background-size: cover;
  height: 666px;
  padding-top: 72px;
  padding-bottom: 90px;
}

.section4 .grid-item {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.center {
  background: url(../images/pc/about.png) no-repeat center;
  background-size: contain;
  width: 840px;
  height: 419px;
  margin: 120px auto 80px;
}

.bottom1 {
  height: 400px;
  background: #f9f9f9;
  text-align: center;
  padding-top: 50px;
}

.bottom1 h2 {
  font-size: 40px;
  font-family: PingFang SC;
  font-weight: 500;
  color: #220c00;
  line-height: 100px;
}

.bottom1 h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: #220c00;
  border-radius: 2px;
  margin: 0 auto;
}

.bottom1 p {
  padding-top: 40px;
  font-size: 24px;
  font-family: PingFang SC;
  font-weight: 400;
  color: #220c00;
  line-height: 36px;
  text-align: left;
}

.bottom {
  background: #f5f5f5;
  height: 300px;
  margin: 136px 0 74px;
  font-size: 16px;
  font-family: PingFang SC;
  font-weight: 400;
  color: #666666;
  line-height: 30px;
  text-align: center;
  padding-top: 100px;
}

.bottom a {
  color: #666666;
}

.phone {
  display: none;
}

#download {
  position: absolute;
  top: 190px;
}

.buttons .qr-wrapper {
  width: 8.333vw;
  height: 9.375vw;
  border-radius: 0.521vw;
  padding: 0.677vw 0.625vw 0.469vw 0.625vw;
  position: absolute;
  top: -183px;
  left: 50%;
  transform: translateX(-50%);
  display: grid;
  place-items: center;
  box-shadow: 0px 4px 4px 0px rgba(0, 0, 0, 0.25);
  -webkit-box-shadow: 0px 4px 4px 0px rgba(0, 0, 0, 0.25);
  -moz-box-shadow: 0px 4px 4px 0px rgba(0, 0, 0, 0.25);
  display: none;
  z-index: 2;
  background: linear-gradient(360deg,
      rgba(255, 251, 240, 1) 0%,
      rgba(255, 237, 205, 1) 100%);
  color: #666666;
  font-size: 0.625vw;
  text-align: center;
}

.buttons .qr-wrapper.inverted {
  top: 3.5vw;
}

.buttons .qr-wrapper.left {
  left: -140%;
  top: 0;
}

.buttons .qrcode>* {
  width: 7.083vw !important;
  height: 7.083vw !important;
}

.button-item {
  position: relative;
}

.button-item:hover .qr-wrapper {
  display: block;
}

@media (max-width: 1080px) {
  .w {
    width: 100%;
    margin: 0 auto;
  }

  .active::after {
    content: '';
    display: block;
    width: 100%;
    height: 3px;
    background: #f3efd4;
    border-radius: 2px;
  }

  .nav {
    height: 11.1111vw;
    background: #401600;
  }

  .nav .w {
    display: flex;
    align-items: center;
    padding: 0 3.7037vw;
  }

  .nav h1 {
    font-size: 3.3333vw;
    font-family: PingFang SC;
    font-weight: 400;
    color: #f3efd4;
    line-height: 11.1111vw;
    display: flex;
    align-items: center;
    float: left;
    margin-right: 5.5556vw;
  }

  .nav h1::before {
    background: url(../images/pc/logo.png) no-repeat;
    background-size: contain;
    content: '';
    display: block;
    width: 4.0741vw;
    height: 4.6296vw;
    margin-right: 1.4815vw;
  }

  .nav ul {
    float: left;
  }

  .nav ul li {
    float: left;
    height: 100%;
    padding: 0 1.8519vw;
    line-height: 6.4815vw;
  }

  .nav ul li a {
    font-size: 2.7778vw;
    font-family: PingFang SC;
    font-weight: 400;
    color: #f3efd4;
  }

  .banner {
    background: url(../images/phone/download_banner.webp) no-repeat center;
    background-size: cover;
    width: 100%;
    height: 148.147vw;
  }

  .center {
    background: url(../images/phone/about.png) no-repeat center;
    background-size: contain;
    width: 77.7778vw;
    height: 41.2037vw;
    margin: 12.963vw auto 14.8148vw;
  }

  .bottom1 {
    height: 48.1481vw;
    background: #f9f9f9;
    text-align: center;
    padding-top: 7.4074vw;
  }

  .bottom1 h2 {
    font-size: 3.2037vw;
    font-family: PingFang SC;
    font-weight: 500;
    color: #220c00;
    line-height: 11.1111vw;
  }

  .bottom1 h2::after {
    content: '';
    display: block;
    width: 5.5556vw;
    height: 4px;
    background: #220c00;
    border-radius: 2px;
    margin: 0 auto;
  }

  .bottom1 p {
    font-size: 2.4074vw;
    font-family: PingFang SC;
    font-weight: 400;
    color: #220c00;
    line-height: 3.7037vw;
    text-align: left;
    padding: 3.2037vw 3.7037vw 0;
  }

  .bottom {
    background: #f5f5f5;
    height: 35.1852vw;
    margin: 13.1481vw 0 7.4074vw;
    font-size: 2.2222vw;
    font-family: PingFang SC;
    font-weight: 400;
    color: #666666;
    line-height: 3.3333vw;
    text-align: center;
    padding-top: 12.963vw;
  }

  .bottom a {
    color: #666666;
  }

  .pc {
    display: none;
  }

  .phone {
    display: block;
    background: url(/images/phone/download_bg.webp) no-repeat;
    height: 577.056vw;
    background-size: contain;
    margin-top: -28vw;
  }

  .section1 img {
    height: 138.889vw;
    width: 92.592vw;
    display: block;
    margin: auto;
  }

  .section2 img {
    height: 138.889vw;
    width: 92.592vw;
    display: block;
    margin: auto;
  }

  .phone .section1 a {
    position: absolute;
    bottom: 5.186vw;
    transform: translateX(-50%);
    left: 50%;
  }

  .phone .section1 img.download-btn {
    width: 62.222vw;
    height: 13.889vw;
  }

  .phone .section1 {
    background-color: unset;
    position: relative;
    padding: 0;
    padding-top: 30vw;
  }

  .phone .section2 {
    background: url(../images/phone/download-section2.webp) no-repeat;
    background-size: contain;
    margin: auto;
    margin-top: 8.703vw;
    height: 139.536vw;
    width: 92.592vw;
  }

  .phone .section3 {
    width: 100%;
    padding: 0;
    margin-top: 11.019vw;
  }

  .phone .section3 img {
    height: 85.369vw;
    width: 100%;
  }

  .phone .section3 .buttons {
    margin: 0 6.667vw;
    display: flex;
    justify-content: space-between;
    margin-top: 5.925vw;
  }

  .phone .section3 .buttons img {
    width: 39.814vw;
    height: 8.519vw;
  }

  .phone .section4 {
    background: unset;
  }

  .phone .section4 img {
    width: 100%;
    height: 146.667vw;
  }
}