/**
 *
 *  Devices
 *
**/

@media ( max-width: 1440px ) {

  #infobox {
    display: none;
  }

}

@media ( max-width: 1080px ) {

  .mobile main {
    flex-direction: column;
    align-items: center;
    height: auto;
  }

  .mobile main::before {
    position: fixed;
    background-image: url('../images/bg_glacier_lake_mobile.jpg'),
                      var(--bg-gradient-site);
  }

  .mobile header.site {
    width: 100%;
    max-width: 600px;
    min-height: 100vh;
    max-height: 100vh;
    background-image: url('../images/yangmiao_zhang_mobile.jpg'),
                      var(--bg-gradient-miao);
    box-shadow: 0 0 4px rgb(0, 0, 0, 0.56);
  }

  .mobile header.site nav {
    position: sticky; top: 8px;
  }

  .mobile article {
    z-index: 96;
    margin-top: -64px;
    padding-top: 16px;
    max-width: 600px;
  }

  .mobile article h3 {
    margin-bottom: 64px;
  }

  section.intro {
    display: none;
  }

  footer.site {
    display: block;
    position: relative; bottom: auto; right: auto;
    margin: 0 auto;
    padding: 16px;
    max-width: 600px;
    text-align: center;
    color: var(--color-text);
    background-color: var(--bg-fade);
    border-radius: 0;
    border-top: 1px solid var(--bg-fade-dark);
  }

}

@media ( max-width: 640px ) {

  .mobile header.site {
    font-size: 64%;
  }

  .mobile header.site nav ul {
    gap: 4px;
  }

  .mobile header.site h2 {
    font-size: 160%;
  }

}

@media ( min-height: 800px ) {

  .mobile header.site {
    min-height: 800px;
    max-height: 800px;
  }

}