/* ------------------------------
    mixin
------------------------------ */
/* ------------------------------
    topics
------------------------------ */
#page_topics .column2,
#page_topics_detail .column2 {
  display: flex;
  justify-content: space-between;
  gap: 8rem;
}
@media screen and (max-width: 767px) {
  #page_topics .column2,
  #page_topics_detail .column2 {
    flex-direction: column;
    gap: 0;
  }
  #page_topics .column2 .side,
  #page_topics_detail .column2 .side {
    display: contents;
  }
  #page_topics .column2 .side .order1,
  #page_topics_detail .column2 .side .order1 {
    order: 1;
  }
  #page_topics .column2 .side .order2,
  #page_topics_detail .column2 .side .order2 {
    order: 2;
    margin-top: 0;
    margin-bottom: 4rem;
  }
  #page_topics .column2 .main,
  #page_topics_detail .column2 .main {
    order: 3;
  }
}
#page_topics .column2 .main,
#page_topics_detail .column2 .main {
  flex: 1 1 auto;
}
#page_topics .column2 .side,
#page_topics_detail .column2 .side {
  flex: 0 0 auto;
  width: 26rem;
}
@media screen and (max-width: 767px) {
  #page_topics .column2 .side,
  #page_topics_detail .column2 .side {
    width: 100%;
  }
}
#page_topics .column2 .side .ttl,
#page_topics_detail .column2 .side .ttl {
  font-family: "Lato", sans-serif;
  font-size: 4.5rem;
  line-height: 1.4;
  font-weight: 500;
  margin-bottom: 0.5em;
}
@media screen and (max-width: 767px) {
  #page_topics .column2 .side .ttl,
  #page_topics_detail .column2 .side .ttl {
    margin-bottom: 0.3em;
  }
  #page_topics .column2 .side .category,
  #page_topics_detail .column2 .side .category {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.8rem 0;
  }
}
#page_topics .column2 .side .category li,
#page_topics_detail .column2 .side .category li {
  font-size: 1.2rem;
  padding: 0.2em 0;
}
@media screen and (max-width: 767px) {
  #page_topics .column2 .side .category li,
  #page_topics_detail .column2 .side .category li {
    font-size: 1.4rem;
    padding: 0;
  }
  #page_topics .column2 .side .category li a,
  #page_topics_detail .column2 .side .category li a {
    display: block;
    min-width: 0;
    width: 100%;
    padding: 0.6em 0.3em;
    line-height: 1.4;
    text-align: center;
  }
}
#page_topics .column2 .side .category li a,
#page_topics_detail .column2 .side .category li a {
  display: inline-block;
  min-width: 10em;
  padding: 0 1em;
}
#page_topics .column2 .side .category .active a,
#page_topics_detail .column2 .side .category .active a {
  background: #707E88;
  color: #fff;
  pointer-events: none;
}
#page_topics .column2 .side .archive,
#page_topics_detail .column2 .side .archive {
  width: 40%;
  margin-top: 3rem;
}
@media screen and (max-width: 767px) {
  #page_topics .column2 .side .archive,
  #page_topics_detail .column2 .side .archive {
    width: 100%;
    margin-top: 2.5rem;
  }
}
#page_topics .column2 .side .archive .sttl,
#page_topics_detail .column2 .side .archive .sttl {
  font-size: 1.2rem;
  line-height: 1.4;
  padding-bottom: 0.5em;
  padding-left: 1em;
  margin-bottom: 0.5em;
  border-bottom: 1px solid #aaa;
}
@media screen and (max-width: 767px) {
  #page_topics .column2 .side .archive .sttl,
  #page_topics_detail .column2 .side .archive .sttl {
    font-size: 1.4rem;
    padding-left: 0;
  }
  #page_topics .column2 .side .archive .list,
  #page_topics_detail .column2 .side .archive .list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5em 1.5em;
  }
}
#page_topics .column2 .side .archive .list li,
#page_topics_detail .column2 .side .archive .list li {
  font-size: 1.2rem;
  padding: 0.2em 0;
}
@media screen and (max-width: 767px) {
  #page_topics .column2 .side .archive .list li,
  #page_topics_detail .column2 .side .archive .list li {
    font-size: 1.4rem;
    padding: 0;
  }
  #page_topics .column2 .side .archive .list li a,
  #page_topics_detail .column2 .side .archive .list li a {
    padding-left: 0;
  }
}
#page_topics .column2 .side .archive .list li a,
#page_topics_detail .column2 .side .archive .list li a {
  padding-left: 1em;
}
#page_topics .column2 .side .archive .list .active a,
#page_topics_detail .column2 .side .archive .list .active a {
  color: #707E88;
  text-decoration: underline;
  pointer-events: none;
}
#page_topics .column2 .side .search,
#page_topics_detail .column2 .side .search {
  margin-top: 3rem;
}
@media screen and (max-width: 767px) {
  #page_topics .column2 .side .search,
  #page_topics_detail .column2 .side .search {
    margin-top: 2.5rem;
  }
  #page_topics .column2 .side .search label,
  #page_topics_detail .column2 .side .search label {
    flex: 0 0 4.8rem;
    padding: 0;
  }
  #page_topics .column2 .side .search input,
  #page_topics_detail .column2 .side .search input {
    min-height: 4.8rem;
    padding: 0 1em;
  }
}
#page_topics .column2 .side .search form,
#page_topics_detail .column2 .side .search form {
  display: flex;
  align-items: stretch;
}
#page_topics .column2 .side .search label,
#page_topics_detail .column2 .side .search label {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  background: #707E88;
  padding: 0.5em 1em;
}
#page_topics .column2 .side .search label img,
#page_topics_detail .column2 .side .search label img {
  display: block;
  width: 1.8rem;
}
#page_topics .column2 .side .search input,
#page_topics_detail .column2 .side .search input {
  flex: 1 1 auto;
  display: block;
  width: auto;
  min-width: 0;
  border: 1px solid #aaa;
  font-size: 1.4rem;
  padding: 0 0.5em;
}

#page_topics #sec_archives .archives {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem 2rem;
}
@media screen and (max-width: 767px) {
  #page_topics #sec_archives .archives {
    grid-template-columns: 1fr;
  }
}
#page_topics #sec_archives .archives .item a {
  display: block;
}
#page_topics #sec_archives .archives .item .img {
  width: 100%;
  aspect-ratio: 1.6243654822;
  overflow: hidden;
}
#page_topics #sec_archives .archives .item .img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
#page_topics #sec_archives .archives .item .txt {
  font-size: 1.4rem;
  line-height: 1.4;
  margin: 1em 0 0.5em;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  -webkit-line-clamp: 2;
}
#page_topics #sec_archives .archives .item .date {
  color: #5F5F5F;
  display: inline-block;
  font-family: "Lato", sans-serif;
  font-size: 1.4rem;
  line-height: 1.4;
  margin-right: 1em;
}
#page_topics #sec_archives .archives .item .category {
  display: inline-block;
}
#page_topics #sec_archives .archives .item .category span {
  background: #707E88;
  color: #fff;
  display: inline-block;
  font-size: 1rem;
  line-height: 1.4;
  padding: 0.2em 0.5em;
  border-radius: 3px;
}

#page_topics_detail #sec_post .post_header {
  padding-bottom: 1rem;
  margin-bottom: 5rem;
  border-bottom: 1px solid #aaa;
}
#page_topics_detail #sec_post .post_header .ttl {
  font-size: 1.8rem;
  line-height: 1.6;
  font-weight: 500;
  margin-bottom: 1em;
}
#page_topics_detail #sec_post .post_header .date {
  color: #5F5F5F;
  display: inline-block;
  font-family: "Lato", sans-serif;
  font-size: 1.4rem;
  line-height: 1.4;
  margin-right: 1em;
}
#page_topics_detail #sec_post .post_header .category {
  display: inline-block;
}
#page_topics_detail #sec_post .post_header .category span {
  background: #707E88;
  color: #fff;
  display: inline-block;
  font-size: 1rem;
  line-height: 1.4;
  padding: 0.2em 0.5em;
  border-radius: 3px;
}
#page_topics_detail #sec_post .post_footer {
  padding-top: 8rem;
  margin-top: 5rem;
  border-top: 1px solid #aaa;
}
#page_topics_detail #sec_post .post_footer .share {
  text-align: center;
}
#page_topics_detail #sec_post .post_footer .share .ttl {
  font-size: 1.2rem;
  margin-bottom: 1em;
}
#page_topics_detail #sec_post .post_footer .share .sns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}