.news main {
  padding-top: 16rem;
}

.news .news_archive,
.news .news_article {
  padding: 8rem 0 12rem;
}

.news .news_wrap {
  max-width: 112rem;
  margin: 0 auto;
}

.news .news_archive_layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 11rem;
  gap: 4rem;
  align-items: start;
}

.news .news_archive_main {
  min-width: 0;
}

.news .news_month_sections .month_block:not(:last-child) {
  margin-bottom: 6.4rem;
}

.news .news_month_sections .month_heading {
  margin-bottom: 2.4rem;
  padding-left: 1.3rem;
  border-left: 5px solid #3c5488;
  font-size: 2.8rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.news .news_content .item {
  padding: 2rem 0;
  border-bottom: 1px solid #a5aab4;
}

.news .news_content .item_head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: 1rem;
}

.news .news_content .date {
  letter-spacing: 0;
  font-feature-settings: 'tnum' 1;
}

.news .news_content .category {
  padding: 0.16em 1.4em;
  background: #f3f4ff;
  font-size: 1.3rem;
  font-weight: bold;
  color: #3c5488;
  border-radius: 0.5rem;
}

.news .news_content .title {
  font-size: 2.2rem;
  line-height: 1.45;
}

.news .news_content .summary {
  margin-top: 1.2rem;
  line-height: 1.8;
  color: #4f4f4f;
  word-break: break-word;
}

.news .news_content .summary a {
  color: #3c5488;
  text-decoration: underline;
}

.news .news_content .summary a:hover {
  opacity: 0.7;
}

.news .news_load_sentinel {
  height: 1px;
}

.news .news_month_nav_wrap {
  position: sticky;
  top: 14rem;
  max-height: calc(100vh - 16rem);
  min-width: 0;
}

.news .month_nav_title {
  margin-bottom: 1.3rem;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #5c6472;
}

.news .news_month_nav {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  max-height: calc(100vh - 21rem);
  overflow-y: auto;
  padding-right: 0.4rem;
}

.news .month_nav_btn {
  border: 1px solid #c5cedd;
  background: #f9fbff;
  padding: 0.72rem 1rem;
  border-radius: 0.8rem;
  font-size: 1.3rem;
  font-weight: 500;
  line-height: 1.3;
  text-align: center;
  color: #2e3440;
  cursor: pointer;
  transition: all 0.2s;
}

.news .month_nav_btn:hover {
  border-color: #3c5488;
  color: #3c5488;
}

.news .month_nav_btn.is-active {
  border-color: #3c5488;
  background: #3c5488;
  color: #fff;
}

.news .news_item_link {
  color: inherit;
  text-decoration: none;
}

.news .news_item_link:hover {
  color: #947fb1;
}

.news .news_empty {
  padding: 2rem 0;
}

.news .preview_entry {
  margin-bottom: 2.4rem;
  padding: 1.8rem 2rem;
  border: 1px solid #d2d7e1;
  border-radius: 1rem;
  background: #f9fbff;
}

.news .preview_entry_title {
  margin-bottom: 1rem;
  font-weight: 700;
}

.news .preview_entry_label {
  display: block;
  margin-bottom: 0.8rem;
  font-size: 1.3rem;
  color: #5c6472;
}

.news .preview_entry_row {
  display: flex;
  gap: 1rem;
}

.news .preview_entry_row input {
  flex: 1;
  min-width: 0;
  height: 4rem;
  padding: 0 1.2rem;
  border: 1px solid #c5cedd;
  border-radius: 0.8rem;
  background: #fff;
}

.news .preview_entry_btn {
  border: none;
  border-radius: 999px;
  padding: 0.8rem 1.6rem;
  background: #3c5488;
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
}

.news .news_article .article_head {
  padding-bottom: 2.4rem;
  border-bottom: 1px solid #a5aab4;
}

.news .news_article .article_title {
  margin-top: 1rem;
  font-size: 3.2rem;
  line-height: 1.45;
}

.news .news_article .article_body {
  margin-top: 3.6rem;
  line-height: 1.9;
}

.news .news_article .article_body > *:not(:last-child) {
  margin-bottom: 2rem;
}

.news .news_article .article_body img {
  max-width: 100%;
  height: auto;
}

.news .news_article .news_back {
  margin-top: 4rem;
}

.news .news_article .news_back a {
  text-decoration: underline;
}

.news .preview_notice {
  margin-bottom: 1.6rem;
  padding: 1.2rem 1.4rem;
  border-radius: 0.8rem;
  background: #fff4d9;
  color: #765c00;
}

.news .preview_gate {
  padding: 2rem;
  border: 1px solid #d2d7e1;
  border-radius: 1rem;
}

.news .preview_gate p {
  margin-bottom: 1.4rem;
}

.news .preview_login_btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 999px;
  padding: 0.8rem 1.6rem;
  background: #3c5488;
  color: #fff;
  font-size: 1.4rem;
  cursor: pointer;
}

@media screen and (max-width: 768px) {
  .news main {
    padding-top: 11rem;
  }

  .news .news_archive,
  .news .news_article {
    padding: 4rem 0 8rem;
  }

  .news .news_wrap {
    max-width: none;
  }

  .news .news_archive_layout {
    display: block;
  }

  .news .news_month_nav_wrap {
    position: static;
    margin-top: 2.8rem;
    max-height: none;
  }

  .news .month_nav_title {
    margin-bottom: 1.1rem;
  }

  .news .news_month_nav {
    flex-direction: row;
    gap: 0.8rem;
    max-height: none;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 0 0 0.4rem;
  }

  .news .month_nav_btn {
    flex: 0 0 auto;
    text-align: center;
  }

  .news .news_month_sections .month_block:not(:last-child) {
    margin-bottom: 4rem;
  }

  .news .news_month_sections .month_heading {
    margin-bottom: 2rem;
    font-size: 2.2rem;
  }

  .news .news_content .title {
    font-size: 2rem;
  }

  .news .news_content .summary {
    font-size: 1.5rem;
  }

  .news .preview_entry {
    padding: 1.6rem;
  }

  .news .preview_entry_row {
    flex-direction: column;
    gap: 0.8rem;
  }

  .news .preview_entry_btn {
    width: 100%;
    padding: 1rem 1.6rem;
  }

  .news .news_article .article_title {
    font-size: 2.5rem;
  }

  .news .news_article .article_body {
    font-size: 1.5rem;
  }
}