@media screen and (max-width: 767.999px) {
  main {
    padding: 10px 20px 40px;
  }
  main .link {
    margin-top: 16px;
    padding: 0;
  }
  main .link a {
    padding: 18px 24px;
    border-radius: 80px;
    font-size: 16px;
    line-height: 1.2;
  }
  main .link a::after {
    right: 15px;
  }
  #title_area {
    margin-top: 37px;
  }
  #title_area .en {
    font-size: 12px;
    font-weight: 800;
  }
  #title_area h1 {
    font-size: 24px;
    margin-top: 3px;
    font-weight: 700;
    letter-spacing: 0.024em;
  }
  #contents_wapper {
    font-size: 14px;
    line-height: 1.75;
  }
  #contents_wapper .intro,
  #contents_wapper section.box {
    border-radius: 20px;
    box-shadow: 0px 1px 8px 0px rgba(0, 0, 0, 0.08);
    padding: 30px 30px;
    margin-top: 27px;
  }
  #contents_wapper .intro h2,
  #contents_wapper section.box h2 {
    font-size: 20px;
    line-height: 1.75;
    letter-spacing: 0.008em;
    text-align: center;
    margin-bottom: 30px;
  }
  section.full, section.full-white {
    margin: 0 -20px;
    padding: 40px 20px 40px;
  }
  section.intro h2,
  section.box h2,
  section.full h2,
  section.full-white h2 {
    font-size: 20px;
    line-height: 1.75;
    letter-spacing: 0.008em;
    text-align: center;
    margin-bottom: 30px;
  }
  section.intro h2:nth-of-type(n+2),
  section.box h2:nth-of-type(n+2),
  section.full h2:nth-of-type(n+2),
  section.full-white h2:nth-of-type(n+2) {
    margin-top: 40px;
    margin-bottom: 20px;
  }
  section.intro h2 + .description,
  section.box h2 + .description,
  section.full h2 + .description,
  section.full-white h2 + .description {
    margin-top: -10px;
  }
  section.intro h2 + .description.center,
  section.box h2 + .description.center,
  section.full h2 + .description.center,
  section.full-white h2 + .description.center {
    text-align: center;
  }
  .full:last-child, .full-white:last-child {
    padding-bottom: 50px;
    margin-bottom: -40px;
  }
  .spscroll {
    overflow-x: scroll;
    scroll-behavior: smooth;
  }
}