/* Edu-biz通信 共通パーツ（column.js が差し込む部分の見た目）。色は DESIGN.md の10色の範囲で */

/* 各ページの display 指定より優先して隠す */
[data-backnumber-section][hidden], [data-related-section][hidden], #latest-slot[hidden], .grid-section[hidden], a[hidden] { display: none !important; }

/* ---- 最新号の案内（ヘッダー直下） ---- */
.latest-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 16px;
  padding: 13px 48px;
  background-color: #F7F5F0;
  border-bottom: 1px solid #E2DDD2;
  color: #2A2723;
  font-size: 13px;
}
.latest-bar:hover { color: #2A2723; }
.latest-label { color: #8B8578; font-size: 12px; font-weight: 700; letter-spacing: 0.16em; white-space: nowrap; }
.latest-title { color: #282828; font-weight: 700; min-width: 0; word-break: auto-phrase; }
.latest-bar:hover .latest-title { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.latest-go { color: #282828; font-weight: 700; white-space: nowrap; margin-left: auto; }

/* ---- セミナー ---- */
.seminar-section { display: flex; flex-direction: column; gap: 16px; margin-top: 96px; }
.seminar-card {
  border: 1px solid #D9D4CA;
  border-top: 3px solid #8CC63F;
  padding: 24px 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px 28px;
}
.seminar-text { display: flex; flex-direction: column; gap: 6px; flex: 1 1 380px; min-width: 0; }
.seminar-text p { margin: 0; }
.seminar-lead { font-size: 12px; color: #8B8578; letter-spacing: 0.04em; }
.seminar-title {
  font-family: 'Zen Old Mincho', 'Hiragino Mincho ProN', serif;
  font-size: clamp(18px, 4.2vw, 21px);
  font-weight: 700;
  line-height: 1.55;
  color: #282828;
  word-break: auto-phrase;
  text-wrap: balance;
}
.seminar-sub { font-size: 13px; line-height: 1.7; color: #4A463F; word-break: auto-phrase; }
.seminar-date {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  margin-top: 6px !important;
  font-size: 14px;
  font-weight: 700;
  color: #2A2723;
  font-variant-numeric: tabular-nums;
}
.seminar-more, .seminar-free { font-size: 12px; font-weight: 400; color: #8B8578; }
.seminar-summary { font-size: 14px; line-height: 1.85; color: #4A463F; text-wrap: pretty; margin-top: 4px !important; }
.seminar-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background-color: #F7931E;
  color: #282828;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 13px 26px;
  white-space: nowrap;
}
.seminar-btn:hover { color: #282828; filter: brightness(0.95); }
.seminar-foot { margin: 0; font-size: 12px; text-align: right; }
.seminar-foot a { color: #8B8578; border-bottom: 1px solid #D9D4CA; }
.seminar-foot a:hover { color: #282828; border-bottom-color: #8CC63F; }
.seminar-empty { margin: 0; font-size: 14px; line-height: 1.85; color: #4A463F; }
.seminar-empty a { margin-left: 6px; white-space: nowrap; }

/* ---- バックナンバー（行ごとリンク） ---- */
a.backnumber-row { color: inherit; }
a.backnumber-row:hover .backnumber-title { color: #282828; text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }

@media (max-width: 680px) {
  .latest-bar { padding: 12px 20px; }
  .latest-go { margin-left: 0; }
  .seminar-card { padding: 20px 18px; }
  .seminar-btn { width: 100%; }
  .seminar-foot { text-align: left; }
}

/* ---- セミナー：読者ごとに最大3段（2026-09-30） ---- */
.seminar-list { border-top: 3px solid #8CC63F; }
.seminar-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px 24px; align-items: center; padding: 18px 2px; border-bottom: 1px solid #D9D4CA; }
.seminar-item .seminar-text { gap: 4px; }
.seminar-aud { font-size: 12px; font-weight: 700; color: #282828; letter-spacing: 0.06em; padding-left: 10px; border-left: 4px solid #8CC63F; line-height: 1.4; margin-bottom: 4px !important; }
.seminar-item .seminar-title { font-size: clamp(16px, 3.8vw, 18px); }
.seminar-item .seminar-date { margin-top: 2px !important; font-size: 13.5px; }
@media (max-width: 680px) {
  .seminar-item { grid-template-columns: minmax(0, 1fr); }
  .seminar-item .seminar-btn { width: 100%; }
}

/* 読者ごとの色分け（2026-09-30）。色はすららのサイトで実際に使われている値から選んだ
   既存塾＝塾教材『すらら』(jukusurala.jp)の青緑 #00ACBA／フリースクール＝すらら緑 #8CC63F／開業＝すららの差し色 #F7931E
   ラベルは「薄い地＋左の太線＋濃い文字」。明るい色の上に白文字を載せない（読みにくい） */
.seminar-item { border-left: 3px solid transparent; padding-left: 16px; }
.seminar-aud {
  display: inline-block;
  font-size: 13px;
  padding: 5px 12px 5px 10px;
  border-left-width: 6px;
  letter-spacing: 0.04em;
  margin-bottom: 8px !important;
}
.seminar-item--kizon { border-left-color: #00ACBA; }
.seminar-item--kizon .seminar-aud { background-color: #E4F8FA; border-left-color: #00ACBA; }
.seminar-item--freeschool { border-left-color: #8CC63F; }
.seminar-item--freeschool .seminar-aud { background-color: #D9ECBF; border-left-color: #8CC63F; }
.seminar-item--kaigyo { border-left-color: #F7931E; }
.seminar-item--kaigyo .seminar-aud { background-color: #FFF2C7; border-left-color: #F7931E; }
@media (max-width: 680px) { .seminar-item { padding-left: 12px; } .seminar-aud { font-size: 12.5px; } }
/* ラベルは文字の長さぶんだけ（段の幅いっぱいに伸ばさない） */
.seminar-item .seminar-aud { align-self: flex-start; }

/* ---- コラム内の移動用の帯（2026-09-30）：左に最新号の案内、右に「すべての記事」「バックナンバー」 ---- */
.subnav { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0 24px; background-color: #F7F5F0; border-bottom: 1px solid #E2DDD2; padding: 0 48px; }
.subnav .latest-bar { background: none; border: none; padding: 12px 0; flex: 1 1 420px; min-width: 0; }
.subnav .latest-go { margin-left: 12px; }
.subnav-name { font-family: 'Zen Old Mincho', 'Hiragino Mincho ProN', serif; font-size: 14px; font-weight: 700; color: #282828; padding: 12px 0; flex: 1 1 auto; }
.subnav-links { display: flex; align-items: stretch; flex-shrink: 0; }
.subnav-links a { display: inline-flex; align-items: center; padding: 12px 0 12px 18px; font-size: 13px; font-weight: 700; color: #282828; white-space: nowrap; }
.subnav-links a + a { margin-left: 18px; border-left: 1px solid #D9D4CA; }
.subnav-links a::before { content: ""; width: 6px; height: 6px; background-color: #8CC63F; margin-right: 8px; }
.subnav-links a:hover { text-decoration: underline; text-decoration-color: #8CC63F; text-underline-offset: 5px; text-decoration-thickness: 2px; }

/* ---- トップページ：最新号のカード ---- */
.issue-card { display: flex; flex-direction: column; gap: 8px; border: 1px solid #D9D4CA; border-top: 4px solid #8CC63F; padding: 22px 26px; color: inherit; }
.issue-card:hover { color: inherit; }
.issue-card-vol { font-size: 12.5px; font-weight: 700; color: #8B8578; letter-spacing: 0.08em; }
.issue-card-title { font-family: 'Zen Old Mincho', 'Hiragino Mincho ProN', serif; font-size: clamp(20px, 4.6vw, 26px); font-weight: 700; line-height: 1.5; color: #282828; word-break: auto-phrase; text-wrap: balance; }
.issue-card-go { align-self: flex-start; margin-top: 6px; background-color: #8CC63F; color: #282828; font-size: 14px; font-weight: 700; padding: 9px 18px; }
.issue-card-go::after { content: "　→"; }
.issue-card:hover .issue-card-go { background-color: #73AD00; }

/* ---- トップページ：すべての記事 ---- */
.article-filter { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.filter-btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border: 1px solid #D9D4CA; background-color: #FFFFFF; color: #4A463F; font-size: 13px; cursor: pointer; }
.filter-btn.is-active { background-color: #8CC63F; border-color: #8CC63F; color: #282828; font-weight: 700; }
.filter-count { font-size: 11px; color: #8B8578; }
.filter-btn.is-active .filter-count { color: #282828; }
.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 26px 22px; }
.article-card { display: flex; flex-direction: column; gap: 8px; color: inherit; }
.article-card:hover { color: inherit; }
.article-card img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; display: block; }
.article-card-meta { font-size: 11.5px; color: #8B8578; }
.article-card-title { font-size: 14.5px; font-weight: 700; line-height: 1.6; color: #282828; word-break: auto-phrase; }
.article-card:hover .article-card-title { text-decoration: underline; text-decoration-color: #8CC63F; text-underline-offset: 4px; text-decoration-thickness: 2px; }

@media (max-width: 680px) {
  .subnav { padding: 0 16px; }
  .subnav .latest-bar { padding: 10px 0 4px 0; flex-basis: 100%; }
  .subnav-name { padding: 10px 0 4px 0; flex-basis: 100%; font-size: 13px; }
  .subnav-links { width: 100%; padding-bottom: 4px; }
  .subnav-links a { padding: 8px 0 10px 0; font-size: 12.5px; }
  .subnav-links a + a { padding-left: 14px; margin-left: 14px; }
  .issue-card { padding: 18px 18px; }
  .article-grid { grid-template-columns: minmax(0, 1fr); }
}
/* トップページの節の間隔 */
.articles-section, .backnumber-top { display: flex; flex-direction: column; gap: 16px; margin-top: 56px; }
.lead-section #latest-issue-slot { margin-top: 12px; }
/* PC幅では最新号の案内を1行に収める（長い号タイトルは末尾を省略） */
@media (min-width: 681px) {
  .subnav .latest-bar { flex-wrap: nowrap; }
  .subnav .latest-title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; flex: 1 1 auto; }
  .subnav .latest-label, .subnav .latest-go { flex-shrink: 0; }
}
@media (min-width: 681px) and (max-width: 980px) { .subnav .latest-label { display: none; } }

/* ---- トップページ（記事を中心に見せる）2026-09-30 ---- */
.top-section { display: flex; flex-direction: column; gap: 16px; margin-top: 56px; }
.top-section:first-child { margin-top: 8px; }
.article-card-body { display: flex; flex-direction: column; gap: 6px; }
.article-card-summary { font-size: 13.5px; line-height: 1.75; color: #4A463F; text-wrap: pretty; }

/* 今週の3本 */
.weekly-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; margin-bottom: 4px; }
.weekly-vol { font-size: 12.5px; font-weight: 700; color: #8B8578; letter-spacing: 0.06em; }
.weekly-title { font-family: 'Zen Old Mincho', 'Hiragino Mincho ProN', serif; font-size: 17px; font-weight: 700; color: #282828; flex: 1 1 auto; min-width: 0; word-break: auto-phrase; }
.weekly-toc { font-size: 12.5px; color: #4A463F; border-bottom: 1px solid #D9D4CA; white-space: nowrap; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.feature-card { display: flex; flex-direction: column; gap: 10px; color: inherit; border-top: 4px solid #8CC63F; padding-top: 12px; }
.feature-card:hover { color: inherit; }
.feature-card img { width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; display: block; }
.feature-card .article-card-title { font-size: 15.5px; }
.feature-card:hover .article-card-title { text-decoration: underline; text-decoration-color: #8CC63F; text-underline-offset: 4px; text-decoration-thickness: 2px; }

/* テーマで探す */
.theme-block { display: flex; flex-direction: column; gap: 12px; padding: 18px 0 22px 0; border-bottom: 1px solid #E2DDD2; }
.theme-block:first-child { padding-top: 4px; }
.theme-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px 12px; }
.theme-name { font-size: 15px; font-weight: 700; color: #282828; padding-left: 10px; border-left: 4px solid #8CC63F; }
.theme-more { font-size: 13px; font-weight: 700; color: #282828; background: none; border: none; padding: 4px 0; cursor: pointer; border-bottom: 2px solid #8CC63F; }
.theme-more:hover { color: #73AD00; }
.article-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* よく読まれている記事 */
.popular-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid #D9D4CA; }
.popular-list li { border-bottom: 1px solid #D9D4CA; }
.popular-item { display: flex; align-items: flex-start; gap: 14px; padding: 14px 2px; color: inherit; }
.popular-item:hover { color: inherit; }
.popular-item:hover .article-card-title { text-decoration: underline; text-decoration-color: #8CC63F; text-underline-offset: 4px; text-decoration-thickness: 2px; }
.num-block.popular-num { width: 32px; height: 32px; font-size: 15px; }
.popular-text { display: flex; flex-direction: column; gap: 4px; min-width: 0; }

@media (max-width: 860px) {
  .feature-grid { grid-template-columns: minmax(0, 1fr); }
  .feature-card { display: grid; grid-template-columns: 140px minmax(0, 1fr); gap: 12px; align-items: start; }
  .article-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
  .feature-card { grid-template-columns: 120px minmax(0, 1fr); }
  .feature-card .article-card-summary { display: none; }
  .article-grid--3 { grid-template-columns: minmax(0, 1fr); }
  .article-grid--3 .article-card { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 12px; align-items: start; }
}

/* ---- 記事を探す（キーワード検索＋テーマのプルダウン）2026-09-30 ---- */
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.article-search { display: grid; grid-template-columns: minmax(0, 1fr) 15em; gap: 10px; }
.search-box, .theme-select { position: relative; display: block; }
.search-box input, .theme-select select {
  width: 100%; height: 46px; font: inherit; font-size: 14.5px; color: #282828;
  border: 1px solid #D9D4CA; border-radius: 0; background-color: #FFFFFF; padding: 0 14px;
  -webkit-appearance: none; appearance: none;
}
.search-box input { padding-left: 40px; }
.search-box::before { /* 虫めがね */
  content: ""; position: absolute; left: 14px; top: 50%; width: 12px; height: 12px; margin-top: -8px;
  border: 2px solid #8B8578; border-radius: 50%;
}
.search-box::after { content: ""; position: absolute; left: 25px; top: 50%; width: 6px; height: 2px; margin-top: 4px; background-color: #8B8578; transform: rotate(45deg); }
.theme-select::after { content: ""; position: absolute; right: 16px; top: 50%; width: 8px; height: 8px; margin-top: -6px; border-right: 2px solid #282828; border-bottom: 2px solid #282828; transform: rotate(45deg); pointer-events: none; }
.theme-select select { padding-right: 40px; cursor: pointer; font-weight: 700; }
.search-box input:focus, .theme-select select:focus { outline: none; border-color: #8CC63F; box-shadow: inset 0 0 0 1px #8CC63F; }
.article-count { margin: 4px 0 6px 0; font-size: 13px; color: #8B8578; }
.article-more { display: block; margin: 28px auto 0; padding: 12px 28px; border: 1px solid #282828; background-color: #FFFFFF; color: #282828; font: inherit; font-size: 14px; font-weight: 700; letter-spacing: 0.04em; cursor: pointer; }
.article-more:hover { background-color: #D9ECBF; }
.article-more[hidden] { display: none; }
.article-empty { grid-column: 1 / -1; margin: 0; padding: 22px 18px; background-color: #F7F5F0; font-size: 14px; line-height: 1.8; color: #4A463F; }
@media (max-width: 680px) { .article-search { grid-template-columns: minmax(0, 1fr); } }
/* スマホでは記事の一覧もサムネ＋タイトルの横並びにして、縦に長くなりすぎないようにする */
@media (max-width: 680px) {
  #article-results.article-grid { gap: 16px; }
  #article-results .article-card { display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 12px; align-items: start; }
  #article-results .article-card-title { font-size: 14px; }
  .search-box input::placeholder { font-size: 13px; }
}