* {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  min-width: 0;
  height: 100%;
  overflow-x: hidden;
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", Arial, sans-serif;
  color: #0f172a;
  background-color: #ffffff;
}

body {
  min-height: 100%;
  min-height: 100vh;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  background: #ffffff url("./images/background.png") no-repeat center top;
  -webkit-background-size: cover;
  background-size: cover;
}

.page-main {
  -webkit-box-flex: 1;
  -ms-flex: 1;
  flex: 1;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  text-align: center;
  padding: 42px 24px 58px;
}

.hero {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
  -ms-flex-direction: column;
  flex-direction: column;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  text-align: center;
}

.logo-wrap {
  margin-bottom: 100px;
}

.hero-logo {
  width: 470px;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.hero-subtitle {
  margin: 0;
  font-size: 22px;
  line-height: 1.65;
  letter-spacing: 0.02em;
  color: #646464;
}

.hero-actions {
  margin-top: 25px;
}

.download-btn {
  width: 290px;
  height: 60px;
  margin: 0 auto;
  border-radius: 25px;
  background: #6edfff;
  background: -webkit-linear-gradient(left, #6de2ff 0%, #3f91ff 100%);
  background: linear-gradient(115deg, #6de2ff 0%, #3f91ff 100%);
  color: #ffffff;
  text-decoration: none;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-shadow: 0 10px 22px rgba(88, 186, 255, 0.35);
  box-shadow: 0 10px 22px rgba(88, 186, 255, 0.35);
}

.download-btn:hover,
.download-btn:focus,
.download-btn:active,
.download-btn:visited {
  color: #ffffff;
  text-decoration: none;
}

.download-btn-icon {
  width: 30px;
  height: 30px;
  margin-right: 12px;
  display: block;
}

.download-btn-text {
  font-size: 16px;
  line-height: 1;
  font-weight: 600;
}

.hero-product {
  width: 100%;
  max-width: 1000px;
  height: auto;
  display: block;
  margin: 0 auto;
}

.page-footer {
  width: 100%;
  background: #051a3a;
  color: rgba(255, 255, 255, 0.65);
  text-align: center;
  font-size: 13px;
  line-height: 1.6;
  min-height: 100px;
  padding: 16px 24px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
}

.footer-line {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  max-width: 100%;
}

.footer-item {
  white-space: nowrap;
}

.footer-sep {
  display: inline-block;
  margin: 0 10px;
  white-space: nowrap;
}

.page-footer a,
.page-footer a:visited,
.page-footer a:hover,
.page-footer a:active,
.page-footer a:focus {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  cursor: pointer;
  text-decoration: underline;
}

@media screen and (max-width: 1366px) {
  .hero-logo {
    width: 420px;
  }

  .hero-subtitle {
    font-size: 20px;
  }

  .download-btn-text {
    font-size: 16px;
  }
}

@media screen and (max-width: 1200px) {
  .page-main {
    padding-top: 34px;
    padding-bottom: 42px;
  }

  .hero-logo {
    width: 380px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .download-btn {
    width: 260px;
    height: 54px;
    border-radius: 20px;
  }

  .download-btn-text {
    font-size: 16px;
  }
}

@media screen and (max-height: 780px) {
  .page-main {
    padding-top: 28px;
    padding-bottom: 34px;
  }

  .logo-wrap {
    margin-bottom: 40px;
  }
}

@media screen and (max-width: 450px) {
  .page-main {
    padding-top: 24px;
    padding-bottom: 24px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-logo {
    width: 280px;
    max-width: 88%;
  }

  .hero-subtitle {
    font-size: 16px;
    line-height: 1.5;
  }

  .download-btn {
    width: 220px;
    height: 46px;
    border-radius: 20px;
  }

  .download-btn-icon {
    width: 20px;
    height: 20px;
    margin-right: 8px;
  }

  .download-btn-text {
    font-size: 16px;
  }

  .logo-wrap {
    margin-bottom: 16px;
  }

  .page-footer {
    padding-left: 12px;
    padding-right: 12px;
    font-size: 12px;
    min-height: 100px;
  }

  .footer-sep {
    margin: 0 6px;
  }
}