/* ════════════════════════════════════════════════
   うっかり企画 — コラム共通スタイル
   column.html / column-XX-*.html で使用
   ════════════════════════════════════════════════ */

/* ── コラム一覧 ── */
.column-list { max-width: 900px; margin: 0 auto; }

.column-card {
  display: block;
  border: 1px solid var(--border);
  background: rgba(13,17,23,0.6);
  padding: 36px 38px;
  margin-bottom: 24px;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
  transition: all 0.4s;
}
.column-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 2px; height: 0;
  background: linear-gradient(180deg, var(--accent), transparent);
  transition: height 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.column-card:hover {
  border-color: rgba(74,144,232,0.4);
  background: var(--surface);
  transform: translateY(-2px);
}
.column-card:hover::before { height: 100%; }

.column-meta {
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.column-date {
  font-family: 'Share Tech Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}
.column-tag {
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--accent);
  border: 1px solid rgba(74,144,232,0.3);
  padding: 3px 10px;
}
.column-card h2 {
  font-family: 'Zen Old Mincho', serif;
  font-size: 23px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.03em;
  margin-bottom: 14px;
}
.column-card:hover h2 { color: var(--text-primary); }
.column-excerpt {
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 2;
  letter-spacing: 0.03em;
}
.column-more {
  margin-top: 18px;
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--accent);
  text-transform: uppercase;
  transition: letter-spacing 0.3s;
}
.column-card:hover .column-more { letter-spacing: 0.32em; }

/* カテゴリ見出し */
.column-section-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--gold);
  text-transform: uppercase;
  margin: 48px 0 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.column-section-label:first-of-type { margin-top: 0; }

/* ── 記事本文 ── */
.article { max-width: 760px; margin: 0 auto; }

.article-meta {
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.article-date {
  font-family: 'Share Tech Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
}
.article-tag {
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--accent);
  border: 1px solid rgba(74,144,232,0.3);
  padding: 3px 10px;
}

/* 目次 */
.toc {
  border: 1px solid var(--border);
  background: rgba(13,17,23,0.6);
  padding: 28px 32px;
  margin-bottom: 48px;
}
.toc .toc-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.toc ol { padding-left: 20px; }
.toc li { font-size: 13.5px; line-height: 2.1; color: var(--text-secondary); }
.toc a { color: var(--text-secondary); text-decoration: none; transition: color 0.3s; }
.toc a:hover { color: var(--accent); }

/* 見出し・本文 */
.article h2 {
  font-family: 'Zen Old Mincho', serif;
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 900;
  line-height: 1.5;
  letter-spacing: 0.03em;
  margin: 56px 0 24px;
  padding-left: 18px;
  border-left: 3px solid var(--accent);
}
.article h3 {
  font-family: 'Zen Old Mincho', serif;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: 0.03em;
  margin: 36px 0 16px;
  color: var(--text-primary);
}
.article p {
  font-size: 14.5px;
  line-height: 2.2;
  color: var(--text-secondary);
  letter-spacing: 0.04em;
  margin-bottom: 24px;
}
.article p strong { color: var(--text-primary); font-weight: 700; }
.article .lead {
  font-size: 15.5px;
  line-height: 2.2;
  color: var(--text-primary);
  margin-bottom: 40px;
}

/* 表 */
.price-table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0 32px;
  font-size: 13.5px;
}
.price-table th, .price-table td {
  border: 1px solid var(--border);
  padding: 14px 16px;
  text-align: left;
  line-height: 1.8;
}
.price-table th {
  background: rgba(74,144,232,0.08);
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: 0.05em;
}
.price-table td { color: var(--text-secondary); }
.price-table td strong { color: var(--gold); }

/* 箇条書き */
.article ul.points { list-style: none; margin: 20px 0 28px; }
.article ul.points li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 2;
  letter-spacing: 0.03em;
  padding-left: 26px;
  position: relative;
  margin-bottom: 10px;
}
.article ul.points li::before {
  content: '▸';
  position: absolute; left: 0;
  color: var(--accent);
}
.article ul.points li strong { color: var(--text-primary); }

/* 番号付きリスト */
.article ol.steps { margin: 20px 0 28px; padding-left: 22px; }
.article ol.steps li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 2;
  letter-spacing: 0.03em;
  margin-bottom: 12px;
}
.article ol.steps li strong { color: var(--text-primary); }

/* 注意ボックス */
.note-box {
  border: 1px dashed rgba(200,168,75,0.35);
  background: rgba(200,168,75,0.03);
  padding: 26px 30px;
  margin: 32px 0;
}
.note-box .note-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.note-box p { margin-bottom: 0; font-size: 13.5px; }

/* 記事内CTA */
.inline-cta {
  border: 1px solid rgba(200,168,75,0.3);
  background: rgba(13,17,23,0.7);
  padding: 32px 34px;
  margin: 48px 0;
  text-align: center;
}
.inline-cta h3 {
  font-family: 'Zen Old Mincho', serif;
  font-size: 20px;
  font-weight: 900;
  margin-bottom: 14px;
  letter-spacing: 0.04em;
  color: var(--text-primary);
}
.inline-cta p { font-size: 13.5px; margin-bottom: 24px; line-height: 2; }
.inline-cta .price-hl { color: var(--gold); font-weight: 700; font-size: 15px; }

/* 記事末ナビ */
.article-footer-nav {
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.article-footer-nav a {
  font-family: 'Share Tech Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s;
}
.article-footer-nav a:hover { color: var(--accent); }

/* 関連記事 */
.related {
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.related .related-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.4em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.related ul { list-style: none; }
.related li { margin-bottom: 12px; }
.related a {
  font-size: 13.5px;
  color: var(--text-secondary);
  text-decoration: none;
  line-height: 1.9;
  transition: color 0.3s;
}
.related a::before { content: '▸ '; color: var(--accent); }
.related a:hover { color: var(--text-primary); }

/* 記事ヒーロー見出し */
.article-hero-title {
  font-family: 'Zen Old Mincho', serif;
  font-size: clamp(26px, 4.5vw, 44px);
  font-weight: 900;
  line-height: 1.5;
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, #e8eaf2 0%, #8892a4 50%, #4a90e8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* サブCTA */
.sub-cta {
  text-align: center;
  padding: 100px 48px;
  border-top: 1px solid var(--border);
  margin-top: 80px;
}
.sub-cta-label {
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.5em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 24px;
}
.sub-cta-title {
  font-family: 'Zen Old Mincho', serif;
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}
.sub-cta-sub {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 2;
  margin-bottom: 36px;
}
.sub-cta-buttons {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── レスポンシブ ── */
@media (max-width: 900px) {
  .column-card { padding: 28px 24px; }
  .column-card h2 { font-size: 20px; }
  .toc { padding: 22px 22px; }
  .article p { font-size: 14px; line-height: 2.1; }
  .price-table { font-size: 12.5px; }
  .price-table th, .price-table td { padding: 11px 10px; }
  .inline-cta { padding: 26px 22px; }
  .sub-cta { padding: 70px 20px; }
  .sub-cta-buttons { flex-direction: column; align-items: stretch; max-width: 320px; margin: 0 auto; }
  .sub-cta-buttons a { width: 100%; text-align: center; }
  .article-footer-nav { flex-direction: column; gap: 14px; }
}

@media (max-width: 600px) {
  .column-card { padding: 24px 20px; }
  .column-card h2 { font-size: 18px; }
  .price-table, .price-table tbody, .price-table tr, .price-table td, .price-table th {
    display: block; width: 100%;
  }
  .price-table thead { display: none; }
  .price-table tr { margin-bottom: 16px; border: 1px solid var(--border); }
  .price-table td {
    border: none;
    border-bottom: 1px solid var(--border);
    padding: 10px 14px;
  }
  .price-table td:last-child { border-bottom: none; }
  .price-table td::before {
    content: attr(data-label);
    display: block;
    font-size: 10px;
    color: var(--accent);
    font-family: 'Share Tech Mono', monospace;
    letter-spacing: 0.15em;
    margin-bottom: 4px;
  }
}