main{
  line-height: 1.5;

  h1 {
    text-align: center;
    font-size: 32.4px;
    font-weight: normal;
    margin: 0;
  }

  h2 {
    margin: 10px 0 25px 0;
    font-size: 17.25px;
    font-weight: normal;
    color: rgb(216, 56, 0);
    text-align: center;
  }

  h1 + p{
    font-size: 17.25px;
    text-align: center;
  }
  ul, ol {
    padding-left: 12px;
  }
  li {
    padding-left: 0;
    a {
      font-size: 15px;
    }
  }
  #chapter-index{
    list-style: inside square;
    padding-left: 50px;
    a{
      font-size: 18.75px;
    }
  }
  #faq-list > li{
    font-size: 24px;
    > ul{
      padding-top: 12px;
    }
  }
  li:has(.accordion){
    list-style: none;
  }
  .accordion{
    font-size: 16px;
    font-weight: bold;
  }
  .accordion::before{
    content: "＋";
    color: rgb(128, 128, 128);
    font-size: 17.25px;
    font-weight: bold;
    padding-right: 12px;
  }
  .accordion:has(input:checked)::before{
    content: "ー";
  }
  .accordion + div{
    font-size: 15px;
    list-style: outside;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: 0.8s;
    margin: 5px 0 15px 30px;
    ol, ul {
      padding-left: 24px;
    }
  }
  .accordion:has(input:checked) + div{
    max-height: none;
    opacity: 1;
  }
  .accordion > input {
    display: none;
    margin: 0;
  }
  img{
    max-width: 100%;
    vertical-align: middle;
  }
}