/* ===================================================
   TAXAVE（タクセーブ）- column.css
   コラム記事・コラム一覧ページ専用スタイル
   （common.css の読み込み後に使用）
=================================================== */

/* ===== 共通：コラム系ページ body背景 ===== */
body.column-page {
  background: var(--gray-50);
}

/* ===== メインレイアウト ===== */
.main-wrap {
  max-width: 1140px;
  margin: 32px auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px; /* minmax(0) で overflow 防止 */
  gap: 40px;
  align-items: start;
}

/* ===== 記事カード ===== */
.article-card {
  background: white;
  border-radius: 16px;
  padding: 48px 56px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

/* カテゴリ・メタ */
.article-meta-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.article-cat {
  background: rgba(255,107,53,0.1);
  color: var(--orange);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 99px;
}
.article-date { font-size: 13px; color: var(--gray-400); }
.article-supervised {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(27,42,74,0.06);
  color: var(--navy);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 99px;
}

/* タイトル */
.article-title {
  font-size: clamp(24px, 3.5vw, 34px);
  font-weight: 900;
  color: var(--navy);
  line-height: 1.35;
  margin-bottom: 12px;
}
.article-subtitle {
  font-size: 16px;
  color: var(--gray-600);
  margin-bottom: 32px;
  line-height: 1.7;
}

/* アイキャッチ帯 */
.eyecatch {
  background: linear-gradient(135deg, var(--navy) 0%, #2d4270 100%);
  border-radius: 12px;
  padding: 32px 36px;
  margin-bottom: 36px;
  position: relative;
  overflow: hidden;
}
.eyecatch::before {
  content: '';
  position: absolute;
  right: -40px; top: -40px;
  width: 200px; height: 200px;
  border-radius: 50%;
  background: rgba(255,107,53,0.08);
}
.eyecatch-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--yellow);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.eyecatch-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.eyecatch-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: rgba(255,255,255,0.9);
  font-size: 15px;
  font-weight: 600;
}
.eyecatch-check {
  color: var(--green);
  flex-shrink: 0;
  font-size: 15px;
  margin-top: 2px;
}

/* 本文スタイル */
.article-body h2 {
  font-size: clamp(20px, 2.5vw, 24px);
  font-weight: 900;
  color: var(--navy);
  margin: 56px 0 20px;
  padding-left: 16px;
  border-left: 4px solid var(--orange);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--navy);
  margin: 32px 0 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.article-body h3::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
  flex-shrink: 0;
}
.article-body p {
  margin-bottom: 18px;
  line-height: 1.9;
  font-size: 15.5px;
}
.article-body ul, .article-body ol {
  margin: 12px 0 18px 20px;
  line-height: 1.85;
}
.article-body li { margin-bottom: 6px; font-size: 15.5px; }
.article-body strong { color: var(--navy); font-weight: 800; }
.article-body a { color: var(--orange); }
.article-body a:hover { text-decoration: underline; }

/* 情報ボックス */
.info-box {
  background: rgba(27,42,74,0.04);
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  padding: 20px 24px;
  margin: 24px 0;
}
.info-box-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.info-box-title i { color: var(--navy); }
.info-box p { margin-bottom: 8px; font-size: 14.5px; color: var(--gray-600); }
.info-box p:last-child { margin-bottom: 0; }

.warn-box {
  background: rgba(245,158,11,0.06);
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: 10px;
  padding: 20px 24px;
  margin: 24px 0;
}
.warn-box-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--amber);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.warn-box p { font-size: 14.5px; color: var(--gray-600); margin-bottom: 8px; }
.warn-box p:last-child { margin-bottom: 0; }

.point-box {
  background: linear-gradient(135deg, rgba(255,107,53,0.05), rgba(255,107,53,0.02));
  border: 2px solid rgba(255,107,53,0.2);
  border-radius: 10px;
  padding: 20px 24px;
  margin: 24px 0;
}
.point-box-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--orange);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.point-box p { font-size: 14.5px; margin-bottom: 8px; }
.point-box p:last-child { margin-bottom: 0; }

/* テーブル */
.table-wrap { overflow-x: auto; margin: 24px 0; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 480px;
}
th {
  background: var(--navy);
  color: white;
  padding: 12px 16px;
  text-align: left;
  font-weight: 700;
  font-size: 13px;
}
td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--gray-200);
  vertical-align: top;
  line-height: 1.6;
}
tr:nth-child(even) td { background: var(--gray-50); }
tr:hover td { background: rgba(255,107,53,0.03); }

/* チェックリスト */
.checklist {
  list-style: none;
  margin: 16px 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background: var(--gray-50);
  border-radius: 8px;
  font-size: 15px;
}
.cl-check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--green);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  flex-shrink: 0;
  margin-top: 1px;
}
.cl-ng { background: var(--red); }

/* ステップ */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 24px 0;
}
.step-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.step-num {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--orange);
  color: white;
  font-size: 18px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.step-title { font-size: 16px; font-weight: 800; color: var(--navy); margin-bottom: 6px; }
.step-desc { font-size: 14.5px; color: var(--gray-600); line-height: 1.75; }

/* SVG図解コンテナ */
.figure-wrap {
  margin: 28px 0;
  background: var(--gray-50);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  overflow-x: auto; /* 大きなSVGは横スクロールで対応 */
  -webkit-overflow-scrolling: touch;
}
.figure-caption {
  font-size: 13px;
  color: var(--gray-400);
  margin-top: 12px;
  text-align: center;
}

/* 目次 */
.toc {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  padding: 24px 28px;
  margin: 32px 0 40px;
}
.toc-title {
  font-size: 15px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.toc-title i { color: var(--orange); }
.toc-list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.toc-list > li > a {
  font-size: 14px;
  font-weight: 700;
  color: var(--navy);
  display: block;
  padding: 4px 0;
}
.toc-list > li > a:hover { color: var(--orange); text-decoration: none; }
.toc-sub {
  list-style: none;
  padding-left: 16px;
  margin-top: 2px;
}
.toc-sub a {
  font-size: 13px;
  color: var(--gray-600);
  display: block;
  padding: 2px 0;
}
.toc-num { color: var(--orange); font-weight: 900; margin-right: 6px; }

/* FAQ（記事内） */
.article-faq-item {
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-q {
  display: flex;
  gap: 14px;
  padding: 18px 22px;
  background: var(--gray-50);
  align-items: flex-start;
}
.faq-q-icon { color: var(--orange); font-size: 18px; font-weight: 900; flex-shrink: 0; }
.faq-q-text { font-size: 15px; font-weight: 700; color: var(--navy); line-height: 1.5; }
.faq-a {
  display: flex;
  gap: 14px;
  padding: 16px 22px;
  background: white;
  border-top: 1px solid var(--gray-200);
}
.faq-a-icon { color: var(--navy); font-size: 18px; font-weight: 900; flex-shrink: 0; opacity: 0.4; }
.faq-a-text { font-size: 14.5px; color: var(--gray-600); line-height: 1.75; }

/* 監修者ボックス */
.supervisor-box {
  border: 2px solid var(--navy);
  border-radius: 14px;
  padding: 28px 32px;
  margin: 48px 0 32px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}
.supervisor-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
  color: var(--navy);
}
.supervisor-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}
.supervisor-name {
  font-size: 18px;
  font-weight: 900;
  color: var(--navy);
  margin-bottom: 4px;
}
.supervisor-credentials {
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 12px;
}
.supervisor-bio {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.75;
}

/* 免責事項 */
.disclaimer-box {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  padding: 20px 24px;
  margin: 32px 0;
}
.disclaimer-box p {
  font-size: 12.5px;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 記事内CTA */
.article-cta {
  background: linear-gradient(135deg, var(--orange), #FF8C5A);
  border-radius: 14px;
  padding: 32px 36px;
  margin: 40px 0;
  text-align: center;
}
.article-cta-title {
  font-size: 20px;
  font-weight: 900;
  color: white;
  margin-bottom: 8px;
}
.article-cta-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 20px;
}
.article-cta-btn {
  display: inline-block;
  background: white;
  color: var(--orange);
  font-size: 15px;
  font-weight: 800;
  padding: 14px 36px;
  border-radius: 8px;
  transition: all 0.2s;
}
.article-cta-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  text-decoration: none;
}
.article-cta-note {
  font-size: 12px;
  color: rgba(255,255,255,0.65);
  margin-top: 10px;
}

/* 関連記事 */
.related-articles {
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--gray-200);
}
.related-title { font-size: 18px; font-weight: 800; color: var(--navy); margin-bottom: 20px; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.related-card {
  background: var(--gray-50);
  border-radius: 10px;
  padding: 18px;
  border: 1px solid var(--gray-200);
  transition: box-shadow 0.2s;
  display: block;
  text-decoration: none;
}
.related-card:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.08); }
.related-cat { font-size: 11px; font-weight: 700; color: var(--orange); margin-bottom: 8px; }
.related-headline { font-size: 13px; font-weight: 700; color: var(--navy); line-height: 1.5; }

/* ===== サイドバー ===== */
.sidebar { position: sticky; top: 24px; }
.sidebar-card {
  background: white;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  margin-bottom: 20px;
}
.sidebar-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--orange);
}
.sidebar-toc { list-style: none; }
.sidebar-toc li {
  border-bottom: 1px solid var(--gray-100);
}
.sidebar-toc a {
  display: block;
  padding: 8px 0;
  font-size: 13px;
  color: var(--gray-600);
  line-height: 1.5;
}
.sidebar-toc a:hover { color: var(--orange); text-decoration: none; }
.sidebar-cta {
  background: var(--orange);
  border-radius: 10px;
  padding: 20px;
  text-align: center;
}
.sidebar-cta-title { font-size: 14px; font-weight: 800; color: white; margin-bottom: 8px; line-height: 1.4; }
.sidebar-cta-btn {
  display: block;
  background: white;
  color: var(--orange);
  font-size: 13px;
  font-weight: 800;
  padding: 10px;
  border-radius: 7px;
  margin-top: 14px;
  text-align: center;
}
.sidebar-cta-btn:hover { text-decoration: none; background: var(--gray-100); }
.sidebar-cta-note { font-size: 11px; color: rgba(255,255,255,0.7); margin-top: 8px; }

/* ===== コラム一覧ページ ===== */
.column-index-wrap {
  max-width: 1140px;
  margin: 32px auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 40px;
  align-items: start;
}

.column-index-header {
  background: linear-gradient(135deg, var(--navy) 0%, #2d4270 100%);
  padding: 56px 24px;
  text-align: center;
}
.column-index-header .section-label { color: var(--yellow); }
.column-index-header .section-title { color: white; margin-bottom: 12px; }
.column-index-header .section-desc {
  color: rgba(255,255,255,0.65);
  margin-bottom: 0;
}

/* カテゴリタブ */
.category-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.cat-tab {
  padding: 8px 20px;
  border-radius: 99px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  border: 2px solid var(--gray-200);
  background: white;
  color: var(--gray-600);
  transition: all 0.15s;
}
.cat-tab.active, .cat-tab:hover {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(255,107,53,0.05);
}

/* 注目記事 */
.featured-article {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--orange);
  margin-bottom: 32px;
  display: flex;
  gap: 28px;
  align-items: flex-start;
  position: relative;
  overflow: hidden;
}
.featured-article::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--amber));
}
.featured-badge {
  position: absolute;
  top: 16px; right: 16px;
  background: var(--orange);
  color: white;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
}
.featured-icon {
  width: 80px;
  height: 80px;
  border-radius: 16px;
  background: rgba(255,107,53,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--orange);
  flex-shrink: 0;
}
.featured-cat {
  font-size: 12px;
  font-weight: 700;
  color: var(--orange);
  margin-bottom: 8px;
}
.featured-title {
  font-size: 20px;
  font-weight: 900;
  color: var(--navy);
  margin-bottom: 10px;
  line-height: 1.4;
}
.featured-desc {
  font-size: 14px;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 16px;
}
.featured-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--gray-400);
}
.featured-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
}

/* 記事グリッド */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}
.article-list-card {
  background: white;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: box-shadow 0.2s, transform 0.15s;
  text-decoration: none;
  color: inherit;
  display: block;
}
.article-list-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
}
.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(255,107,53,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--orange);
  flex-shrink: 0;
  margin-bottom: 12px;
}
.card-cat {
  font-size: 11px;
  font-weight: 700;
  color: var(--orange);
  margin-bottom: 6px;
}
.card-title {
  font-size: 15px;
  font-weight: 800;
  color: var(--navy);
  line-height: 1.5;
  margin-bottom: 8px;
}
.card-desc {
  font-size: 13px;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 12px;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  color: var(--gray-400);
  flex-wrap: wrap;
}
.card-badge {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 99px;
}
.badge-new { background: rgba(46,204,138,0.12); color: var(--green); }
.badge-popular { background: rgba(255,107,53,0.1); color: var(--orange); }
.badge-recommended { background: rgba(27,42,74,0.08); color: var(--navy); }

/* ページネーション */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}
.page-btn {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  border: 1px solid var(--gray-200);
  background: white;
  color: var(--gray-600);
  cursor: pointer;
  transition: all 0.15s;
}
.page-btn.active {
  background: var(--orange);
  color: white;
  border-color: var(--orange);
}
.page-btn:hover:not(.active) {
  border-color: var(--orange);
  color: var(--orange);
}

/* 一覧サイドバー */
.index-sidebar { position: sticky; top: 24px; }
.index-sidebar .sidebar-card {
  background: white;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  margin-bottom: 20px;
}
.index-sidebar .sidebar-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--navy);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--orange);
}
.cat-list { list-style: none; }
.cat-list li {
  border-bottom: 1px solid var(--gray-100);
}
.cat-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  font-size: 13px;
  color: var(--gray-600);
  font-weight: 600;
}
.cat-list a:hover { color: var(--orange); text-decoration: none; }
.cat-count {
  background: var(--gray-100);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 99px;
  color: var(--gray-600);
}
.popular-list { list-style: none; }
.popular-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 0;
  border-bottom: 1px solid var(--gray-100);
}
.popular-num {
  font-size: 18px;
  font-weight: 900;
  color: var(--gray-200);
  line-height: 1;
  flex-shrink: 0;
  width: 24px;
}
.popular-title {
  font-size: 13px;
  color: var(--navy);
  font-weight: 700;
  line-height: 1.5;
}
.popular-title a { color: inherit; }
.popular-title a:hover { color: var(--orange); text-decoration: none; }

/* ===== コラム一覧：記事リストカード（ヨコ並び） ===== */
.article-list-card {
  background: white;
  border-radius: 14px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 180px 1fr;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  border: 1px solid var(--gray-200);
  transition: box-shadow 0.2s, transform 0.2s;
  text-decoration: none;
  color: inherit;
}
.article-list-card:hover {
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  transform: translateY(-2px);
  text-decoration: none;
}
.article-list-card.featured {
  grid-template-columns: 1fr;
  border: 2px solid var(--orange);
  position: relative;
}
.article-list-card.featured::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--amber));
}
.article-thumb {
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: var(--orange);
  min-height: 140px;
}
.article-list-card.featured .article-thumb {
  min-height: 180px;
  font-size: 64px;
  background: linear-gradient(135deg, rgba(255,107,53,0.06), rgba(255,107,53,0.02));
}
.article-info {
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
}
.article-list-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.article-cat-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
}
.cat-kitei  { background: rgba(255,107,53,0.1); color: var(--orange); }
.cat-nozei  { background: rgba(46,204,138,0.1); color: var(--green); }
.cat-niccho { background: rgba(27,42,74,0.08); color: var(--navy); }
.cat-chosa  { background: rgba(245,158,11,0.1); color: var(--amber); }
.cat-denchoho { background: rgba(79,70,229,0.1); color: #4F46E5; }
.cat-other  { background: var(--gray-100); color: var(--gray-600); }
.article-list-date { font-size: 12px; color: var(--gray-400); }
.article-supervised-tag {
  font-size: 11px;
  font-weight: 700;
  color: var(--navy);
  background: rgba(27,42,74,0.06);
  padding: 2px 8px;
  border-radius: 99px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.featured-badge {
  background: var(--orange);
  color: white;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 99px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.article-list-title {
  font-size: 17px;
  font-weight: 800;
  color: var(--navy);
  line-height: 1.4;
  margin-bottom: 10px;
}
.article-list-desc {
  font-size: 13.5px;
  color: var(--gray-600);
  line-height: 1.7;
  flex: 1;
}
.article-list-footer {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.read-more {
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* コラム一覧ヒーロー */
.column-hero {
  background: linear-gradient(135deg, var(--navy), #243658);
  padding: 56px 24px 48px;
  text-align: center;
}
.column-hero-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--yellow);
  letter-spacing: 0.12em;
  margin-bottom: 14px;
}
.column-hero-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 900;
  color: white;
  margin-bottom: 14px;
  line-height: 1.3;
}
.column-hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.65);
  max-width: 560px;
  margin: 0 auto;
}

/* カテゴリタブ（一覧用） */
.category-tabs-sticky {
  background: white;
  border-bottom: 2px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 10;
}
.category-tabs-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 0;
  overflow-x: auto;
}
.cat-tab-btn {
  padding: 16px 22px;
  font-size: 14px;
  font-weight: 700;
  color: var(--gray-600);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
}
.cat-tab-btn:hover { color: var(--navy); }
.cat-tab-btn.active { color: var(--orange); border-bottom-color: var(--orange); }

/* 一覧メインレイアウト */
.column-main-wrap {
  max-width: 1100px;
  margin: 40px auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px; /* minmax(0) で overflow 防止 */
  gap: 40px;
  align-items: start;
}
.articles-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.articles-count { font-size: 14px; color: var(--gray-600); }
.article-list-grid { display: grid; gap: 20px; }

/* 一覧サイドバー */
.column-sidebar { position: sticky; top: 72px; }
.sidebar-cat-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sidebar-cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: 7px;
  background: var(--gray-50);
  cursor: pointer;
  transition: background 0.15s;
}
.sidebar-cat-item:hover { background: rgba(255,107,53,0.06); }
.sidebar-cat-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--navy);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-cat-count {
  font-size: 12px;
  color: var(--gray-400);
  background: white;
  padding: 2px 8px;
  border-radius: 99px;
  border: 1px solid var(--gray-200);
}
.sidebar-popular-list { list-style: none; }
.sidebar-popular-list li { border-bottom: 1px solid var(--gray-100); }
.sidebar-popular-list a {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  font-size: 13px;
  color: var(--gray-800);
  transition: color 0.15s;
}
.sidebar-popular-list a:hover { color: var(--orange); text-decoration: none; }
.popular-rank {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--orange);
  color: white;
  font-size: 10px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}
.popular-rank.r2 { background: var(--gray-400); }
.popular-rank.r3 { background: var(--amber); }
.popular-rank.r4, .popular-rank.r5 { background: var(--gray-200); color: var(--gray-600); }

/* ===== レスポンシブ（column固有） ===== */
@media (max-width: 900px) {
  .main-wrap { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .article-card { padding: 32px 24px; }
  .related-grid { grid-template-columns: 1fr; }
  .supervisor-box { flex-direction: column; gap: 16px; }
  .column-index-wrap { grid-template-columns: 1fr; }
  .index-sidebar { display: none; }
  .articles-grid { grid-template-columns: 1fr; }
  .featured-article { flex-direction: column; gap: 16px; }
  /* 一覧ページ */
  .column-main-wrap { grid-template-columns: 1fr; }
  .column-sidebar { display: none; }
  .article-list-card { grid-template-columns: 1fr; }
  .article-list-card .article-thumb { min-height: 120px; }
}
@media (max-width: 600px) {
  .article-card { padding: 24px 18px; }
  .eyecatch { padding: 24px 20px; }
  .article-list-card.featured .article-thumb { min-height: 140px; }
}

/* ===== サービスバナーカード ===== */
.service-banner {
  margin: 48px 0;
  border-radius: 14px;
  overflow: hidden;
  background: linear-gradient(135deg, #FF6B35 0%, #e55a28 100%);
  box-shadow: 0 4px 20px rgba(255,107,53,0.3);
}
.service-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 28px;
}
.service-banner-label {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.8);
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: .04em;
}
.service-banner-title {
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 6px;
}
.service-banner-sub {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.75);
}
.service-banner-btn {
  display: inline-block;
  background: #fff;
  color: #FF6B35;
  font-weight: 800;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: 8px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: transform .15s, box-shadow .15s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}
.service-banner-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
}
@media (max-width: 600px) {
  .service-banner-inner {
    flex-direction: column;
    text-align: center;
    padding: 20px;
    gap: 16px;
  }
  .service-banner-btn { width: 100%; text-align: center; }
}