* {
  margin: 0;
  padding: 0;
}

a {
  text-decoration: none;
}

body {
  width: 100vw;
  height: calc(var(--vh, 1vh) * 100);
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  background: url(../images/background_pc.webp) no-repeat center #666;
  background-size: cover;
}

header {
  width: 100%;
  display: flex;
  flex-direction: row;
  align-items: center;
  padding: 2rem;
  box-sizing: border-box;
  position: relative;
  z-index: 9;
}

header .logo {
  flex: 1;
}

header .logo img {
  height: 5vw;
}

header .contact-container {
  display: flex;
  flex-direction: row;
  align-items: center;
}

header .contact-container a {
  display: block;
  margin-left: 2rem;
}

header .contact-container a img {
  height: 3vw;
}

section {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

section .content-container {
  margin-left: 2rem;
}

section .content-container img {
  height: 20vw;
}

section .qrcode-container {
  margin-left: 8rem;
  padding: 2rem 1rem;
  display: flex;
  flex-direction: row;
  align-items: center;
}

section .qrcode-container .qrcode {
  text-align: center;
  margin-right: 1rem;
  position: relative;
  padding: 5px;
}

section .qrcode-container .qrcode #code {
  box-sizing: border-box;
  position: absolute;
  top: 0.65vw;
  left: 1.3vw;
  right: 1.3vw;
  bottom: 4.6vw;
}

section .qrcode-container .qrcode .bg {
  width: 13vw;
}

section .qrcode-container .qrcode #code canvas {
  width: 100%;
  height: 100%;
  vertical-align: middle;
}

section .qrcode-container .downloads {
  display: flex;
  flex-direction: column;
}

section .qrcode-container .downloads a {
  margin-bottom: 1rem;
}

section .qrcode-container .downloads a img {
  height: 5vw;
}

footer {
  width: 100vw;
  text-align: center;
}

footer .download-container {
  display: none;
}

.spinner-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 999;
  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;
  background-color: rgba(0, 0, 0, 0.5);
}

.spinner {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 9px solid;
  border-color: rgba(0, 0, 0, 0.5);
  border-right-color: #6183fc;
  -webkit-animation: spinner-zp9dbg 1s infinite linear;
  animation: spinner-zp9dbg 1s infinite linear;
}

@-webkit-keyframes spinner-zp9dbg {
  to {
    -webkit-transform: rotate(1turn);
    transform: rotate(1turn);
  }
}

@keyframes spinner-zp9dbg {
  to {
    -webkit-transform: rotate(1turn);
    transform: rotate(1turn);
  }
}

@media screen and (max-width: 768px) {
  body {
    background-image: url(../images/background.webp);
  }

  footer {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
  }

  header {
    padding: 1rem;
  }

  header .logo img {
    height: 14vw;
  }

  header .contact-container a {
    margin-left: 1rem;
  }

  header .contact-container a img {
    height: 12.5vw;
  }

  section {
    flex: 1;
    justify-content: start;
  }

  section .content-container {
    margin: 0 1rem;
    padding-top: 0;
  }

  section .content-container img {
    width: 100%;
    height: auto;
    margin-top: -3.5rem;
  }

  section .qrcode-container {
    display: none;
  }

  footer .tips-container img {
    height: 10vw;
  }

  footer .download-container {
    display: flex;
    flex-direction: row;
    text-align: center;
    padding: 1rem 0;
  }

  footer .download-container a {
    width: 50%;
    display: block;
  }

  footer .download-container a img {
    width: 85%;
  }
}

@media screen and (max-width: 480px) {
}