#mainvisual.sub {
  display: flex;
  align-items: center;
  height: 39vw;
  margin-top: 72px;
}
#mainvisual.sub .sub_img {
  width: 49vw;
  height: 22vw;
  flex-shrink: 0;
  overflow: hidden;
  border-top-right-radius: 64px;
  border-bottom-right-radius: 64px;
}
#mainvisual.sub .sub_img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
#mainvisual.sub .mainvisual__ttl {
  position: relative;
  font-size: 2.8rem;
  line-height: 1;
  font-weight: 600;
  text-align: center;
  flex: 1;
  min-width: 0;
}
#mainvisual.sub .mainvisual__ttl span {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9.2vw;
  font-weight: 700;
  line-height: 0.8;
  text-align: center;
  letter-spacing: -0.06em;
  color: #ede9e0;
  z-index: -1;
}
@media (max-width: 1000px) {
  #mainvisual.sub {
    flex-direction: column;
    align-items: flex-start;
    height: 95vw;
  }
  #mainvisual.sub .sub_img {
    width: 96vw;
    height: 42vw;
    border-top-right-radius: 7vw;
    border-bottom-right-radius: 7vw;
  }
  #mainvisual.sub .mainvisual__ttl {
    font-size: 7.5vw;
    margin: 0 auto;
    margin-top: 12vw;
  }
  #mainvisual.sub .mainvisual__ttl span {
    font-size: 18vw;
    top: -12vw;
  }
}

.single_post__intro .sub_page__box {
  padding-bottom: 80px;
}
.single_post__intro .single_post__meta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 12px;
}
.single_post__intro .single_post__date {
  color: #45514b;
}
.single_post__intro .single_post__cat {
  display: inline-block;
  background-color: #da6211;
  color: #f5f3ee;
  font-size: 14px;
  text-align: center;
  line-height: 1.4;
  padding: 2px 16px;
  white-space: nowrap;
}
.single_post__intro .single_post__ttl {
  font-size: 28px;
  font-weight: 600;
  line-height: 1.6;
  margin-top: -12px;
  border-bottom: solid 1px #45514b;
  padding-bottom: 24px;
  margin-bottom: 34px;
}
.single_post__intro .single_post__content {
  line-height: 2;
}
.single_post__intro .single_post__content h1,
.single_post__intro .single_post__content h2,
.single_post__intro .single_post__content h3,
.single_post__intro .single_post__content h4,
.single_post__intro .single_post__content h5,
.single_post__intro .single_post__content h6 {
  font-weight: 600;
  line-height: 1.6;
  color: #da6211;
  margin: 1.6em 0 0.8em;
}
.single_post__intro .single_post__content h2 {
  font-size: 26px;
}
.single_post__intro .single_post__content h3 {
  font-size: 22px;
}
.single_post__intro .single_post__content h4 {
  font-size: 18px;
}
.single_post__intro .single_post__content p {
  margin-bottom: 1.4em;
}
.single_post__intro .single_post__content a {
  color: #da6211;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.single_post__intro .single_post__content ul,
.single_post__intro .single_post__content ol {
  margin: 0 0 1.4em 1.4em;
}
.single_post__intro .single_post__content ul li {
  list-style: disc;
}
.single_post__intro .single_post__content ol li {
  list-style: decimal;
}
.single_post__intro .single_post__content img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 1em 0;
}
.single_post__intro .single_post__content blockquote {
  border-left: 4px solid #ede9e0;
  padding-left: 1.2em;
  margin: 1.4em 0;
  color: #45514b;
}

.single_post__nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid #ede9e0;
}
.single_post__nav_item {
  max-width: 45%;
}
.single_post__nav_item a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #45514b;
}
.single_post__nav_prev a {
  justify-content: flex-start;
}
.single_post__nav_next {
  margin-left: auto;
}
.single_post__nav_next a {
  justify-content: flex-end;
  text-align: right;
}
.single_post__nav_arrow {
  flex-shrink: 0;
  color: #da6211;
  font-size: 20px;
}
.single_post__nav_ttl {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.single_post__back {
  text-align: center;
  padding: 60px 0 100px;
}
.single_post__back .cbtn {
  display: inline-flex;
  margin-bottom: 5vw;
}

@media (max-width: 1000px) {
  .single_post__intro .sub_page__box {
    padding-bottom: 12vw;
  }
  .single_post__intro .single_post__meta {
    gap: 4vw;
    margin-bottom: 3vw;
  }
  .single_post__intro .single_post__ttl {
    font-size: 5.4vw;
    padding-bottom: 4vw;
    margin-bottom: 6vw;
  }
  .single_post__intro .single_post__content h2 {
    font-size: 5vw;
  }
  .single_post__intro .single_post__content h3 {
    font-size: 4.4vw;
  }
  .single_post__intro .single_post__content h4 {
    font-size: 3.8vw;
  }
  .single_post__nav {
    margin-top: 8vw;
    padding-top: 5vw;
    gap: 4vw;
  }
  .single_post__nav_item {
    max-width: 48%;
  }
  .single_post__nav_ttl {
    font-size: 3.2vw;
  }
  .single_post__back {
    padding: 10vw 0 16vw;
  }
}