.single_page .single_ttl {
  padding-bottom: 3.6rem;
  border-bottom: 0.2rem solid var(--color-blue);
  margin-bottom: 5rem;
}
.single_page .single_ttl .data {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-bottom: 4rem;
}
.single_page .single_ttl .data .tags {
  margin: 0;
}
.single_page .single_ttl .data time {
  font-size: 1.5rem;
  font-weight: var(--regular);
  font-family: var(--font-en);
  letter-spacing: 0.05em;
  color: var(--color-blue);
}
.single_page .single_ttl .ttl_h2 {
  font-size: 2.4rem;
  font-weight: var(--bold);
  letter-spacing: 0.04em;
}
.single_contents img {
  max-width: 100%;
  margin: 5rem 0 4.8rem;
}
.single_contents p {
  margin: 4.8rem 0 6rem;
  font-size: 1.6rem;
  font-weight: var(--regular);
  line-height: 2;
  letter-spacing: 0.04em;
}
.single_contents h2 {
  margin: 6rem 0 4.8rem;
  font-size: 2.4rem;
  font-weight: var(--bold);
  padding: 1rem 2rem;
  letter-spacing: 0.04em;
  background: rgb(17 19 221 / 0.15);
}
.single_contents h3 {
  position: relative;
  margin: 6rem 0 4.8rem;
  padding-bottom: 2rem;
  font-size: 2.2rem;
  letter-spacing: 0.04em;
  font-weight: var(--bold);
  border-bottom: 0.3rem solid rgb(17 19 221 / 0.15);
}
.single_contents h3::before {
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  content: "";
  display: block;
  width: 6rem;
  height: 0.3rem;
  background: var(--color-blue);
}
.single_contents h4 {
  margin: 6rem 0 4.8rem;
  border-left: 0.4rem solid var(--color-blue);
  padding-left: 2rem;
  font-size: 2rem;
  font-weight: var(--bold);
  letter-spacing: 0.04em;
}
.single_contents ul,
.single_contents ol {
  margin: 5rem 0;
  padding-left: 1.5em;
}
.single_contents li {
  font-size: 1.6rem;
  font-weight: var(--regular);
  line-height: 2;
  letter-spacing: 0.04em;
}
.single_contents ul li {
  list-style: disc;
}
.single_contents ul li::marker {
  content: "・ ";
  font-size: 1.6rem;
  color: var(--color-blue);
}
.single_contents ol {
  padding-left: 2em;
}
.single_contents ol li {
  list-style: auto;
}
.single_contents ol li::marker {
  color: var(--color-blue);
  font-weight: var(--bold);
}
.single_contents blockquote {
  padding: 3.5rem 6.5rem;
  margin: 5rem 0;
  background: url(../img/common/icon_blockquote_top.png) top 2rem left 2.4rem/2.3rem auto no-repeat,
              url(../img/common/icon_blockquote_bottom.png) bottom 2rem right 2.4rem /2.3rem auto no-repeat;
  background-color: #e5ebf0;
}
.single_contents blockquote p {
  margin: 0 !important;
}
.single_contents blockquote cite {
  display: block;
  margin-top: 2.5rem;
  font-size: 1.5rem;
  font-style: italic;
  letter-spacing: 0.04em;
  opacity: 0.7;
}
.single_contents blockquote cite a {
  color: var(--color-blue);
  margin: 0 !important;
}
.single_page .button {
  margin: 9rem auto 0;
  box-shadow: none;
  border: 1px solid var(--color-blue);
  color: var(--color-blue);
  text-shadow: none;
}
.single_page .button span::after {
  background-image: url(../img/common/icon_arrow_blue.png);
}
@media screen and (max-width: 767px) {
  .single_page .single_ttl .data {
    gap: 1.6rem;
    margin-bottom: 3.4rem;
  }
  .single_page .single_ttl .data time {
    font-size: 1.3rem;
  }
  .single_page .single_ttl {
    padding-bottom: 3rem;
    margin-bottom: 3rem;
  }
  .single_page .single_ttl .ttl_h2 {
    font-size: 2.2rem;
  }
  .single_contents *:first-child {
    margin-top: 3rem;
  }
  .single_contents img {
    margin: 4.7rem 0;
  }
  .single_contents p {
    margin: 5rem 0;
    font-size: 1.4rem;
  }
  .single_contents h2 {
    margin: 5rem 0 3.7rem;
    font-size: 2rem;
    padding: 1rem 1.7rem;
  }
  .single_contents h2 + p,
  .single_contents h3 + p,
  .single_contents h4 + p {
    margin-top: 3.7rem;
  }
  .single_contents h3 {
    padding-bottom: 1.8rem;
    font-size: 1.8rem;
  }
  .single_contents h4 {
    padding-left: 1.8rem;
    font-size: 1.6rem;
  }
  .single_contents ul, 
  .single_contents ol {
    margin: 4rem 0;
  }
  .single_contents li {
    font-size: 1.4rem;
  }
  .single_contents blockquote {
    padding: 4.5rem 3rem;
    background-size: 1.9rem auto;
    background-position: top 1.5rem left 1.5rem, bottom 1.5rem right 1.5rem;
  }
  .single_contents blockquote cite {
    font-size: 1.3rem;
  }
  .single_page .button {
    margin-top: 7rem;
  }
}