/* ============================================
   article.css : 記事ページ専用スタイル
   ============================================ */

.article {
  padding: 32px 0 60px;
}

/* パンくず */
.article__breadcrumb {
  font-size: 12px;
  color: var(--c-text-mute);
  margin-bottom: 20px;
}
.article__breadcrumb a {
  color: var(--c-navy-light);
  text-decoration: underline;
}
.article__breadcrumb a:hover { color: var(--c-navy); }
.article__breadcrumb span {
  margin: 0 6px;
  color: var(--c-text-light);
}

/* メタ情報 */
.article__meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--c-text-mute);
}
.article__cat {
  display: inline-block;
  background: var(--c-bg-soft);
  border: 1px solid var(--c-border);
  color: var(--c-navy);
  font-weight: 700;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 999px;
}
.article__date::before { content: "📅 "; opacity: 0.7; }

/* タイトル */
.article__title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: 0.005em;
  color: var(--c-text);
  margin-bottom: 20px;
}

/* リード */
.article__lead {
  font-size: 16px;
  line-height: 1.95;
  color: var(--c-text);
  background: var(--c-bg-soft);
  border-left: 4px solid var(--c-navy);
  padding: 18px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 28px;
}

/* ヒーロー画像 */
.article__hero {
  margin: 0 -8px 32px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--sh);
}
.article__hero img {
  width: 100%;
  aspect-ratio: 16 / 8;
  object-fit: cover;
  display: block;
}

/* 目次 */
.article__toc {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 36px;
}
.article__toc-title {
  font-size: 14px;
  font-weight: 800;
  color: var(--c-navy);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.article__toc-title::before { content: "📋 "; }
.article__toc ol {
  list-style: none;
  padding: 0;
  counter-reset: toc-counter;
}
.article__toc li {
  counter-increment: toc-counter;
  margin-bottom: 8px;
  padding-left: 32px;
  position: relative;
  font-size: 14px;
  line-height: 1.6;
}
.article__toc li::before {
  content: counter(toc-counter);
  position: absolute;
  left: 0;
  top: 1px;
  width: 22px;
  height: 22px;
  background: var(--c-navy);
  color: #fff;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  line-height: 22px;
  font-family: var(--font-num);
}
.article__toc a {
  color: var(--c-text);
  text-decoration: none;
}
.article__toc a:hover {
  color: var(--c-navy);
  text-decoration: underline;
}

/* 本文 */
.article__body {
  font-size: 16px;
  line-height: 1.95;
  color: var(--c-text);
}
.article__body h2 {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.5;
  margin: 48px 0 18px;
  padding: 14px 18px;
  background: linear-gradient(90deg, var(--c-navy) 0%, var(--c-navy-light) 100%);
  color: #fff;
  border-radius: var(--radius-sm);
  letter-spacing: 0.005em;
}
.article__body h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.55;
  margin: 32px 0 14px;
  padding-left: 14px;
  border-left: 4px solid var(--c-navy);
  color: var(--c-text);
}
.article__body h4 {
  font-size: 16px;
  font-weight: 700;
  margin: 20px 0 10px;
  color: var(--c-navy);
}
.article__body p {
  margin-bottom: 18px;
}
.article__body ul,
.article__body ol {
  padding-left: 24px;
  margin-bottom: 20px;
}
.article__body ul { list-style: disc; }
.article__body ol { list-style: decimal; }
.article__body li {
  margin-bottom: 8px;
  line-height: 1.85;
}
.article__body a {
  color: var(--c-navy-light);
  text-decoration: underline;
}
.article__body strong {
  font-weight: 700;
  background: linear-gradient(transparent 60%, var(--c-highlight) 60%);
  padding: 0 2px;
}
.article__body table {
  width: 100%;
  margin: 18px 0;
  border-collapse: collapse;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-size: 14px;
}
.article__body table th,
.article__body table td {
  padding: 12px 14px;
  border: 1px solid var(--c-border);
  text-align: left;
  vertical-align: top;
}
.article__body table th {
  background: var(--c-bg-section);
  font-weight: 700;
  white-space: nowrap;
}
.article__body table tr:nth-child(even) td { background: var(--c-bg-soft); }
.article__body blockquote {
  border-left: 4px solid var(--c-text-light);
  background: var(--c-bg-soft);
  padding: 14px 18px;
  margin: 18px 0;
  font-size: 15px;
  color: var(--c-text-mute);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* 注意ボックス */
.article__note {
  background: #FFF8E1;
  border: 1px solid #FFE082;
  border-radius: var(--radius);
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 14px;
  line-height: 1.8;
}
.article__note::before {
  content: "💡 ";
}
.article__note.is-warning {
  background: #FFF1F0;
  border-color: #FFCDD2;
}
.article__note.is-warning::before { content: "⚠️ "; }

/* 著者・更新情報 */
.article__author {
  margin-top: 48px;
  padding: 24px;
  background: var(--c-bg-soft);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--c-text-mute);
  line-height: 1.85;
}
.article__author strong { color: var(--c-text); }

/* 関連記事 */
.article__related {
  margin-top: 48px;
}
.article__related-title {
  font-size: 18px;
  font-weight: 800;
  border-left: 4px solid var(--c-navy);
  padding-left: 12px;
  margin-bottom: 18px;
}
.article__related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.article__related-card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 18px;
  display: block;
  transition: transform 0.15s, box-shadow 0.15s;
}
.article__related-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh);
  border-color: var(--c-navy);
}
.article__related-cat {
  font-size: 11px;
  font-weight: 700;
  color: var(--c-navy);
  background: var(--c-bg-soft);
  border: 1px solid var(--c-border);
  padding: 2px 8px;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 10px;
}
.article__related-name {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-text);
}

/* 記事一覧ページ */
.articles-list {
  padding: 40px 0 60px;
}
.articles-list__title {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 28px;
  border-left: 4px solid var(--c-navy);
  padding-left: 14px;
  line-height: 1.5;
}
.articles-list__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 22px;
}
.articles-list__card {
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 22px;
  transition: transform 0.15s, box-shadow 0.15s;
  display: block;
}
.articles-list__card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh);
  border-color: var(--c-navy);
}
.articles-list__cat {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--c-navy);
  background: var(--c-bg-soft);
  border: 1px solid var(--c-border);
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.articles-list__name {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--c-text);
  margin-bottom: 8px;
}
.articles-list__desc {
  font-size: 13px;
  color: var(--c-text-mute);
  line-height: 1.75;
}

/* SP対応 */
@media (max-width: 767px) {
  .article { padding: 24px 0 40px; }
  .article__title { font-size: 22px; line-height: 1.4; }
  .article__lead { font-size: 15px; padding: 14px 16px; }
  .article__hero { margin: 0 -8px 24px; }
  .article__hero img { aspect-ratio: 16 / 9; }
  .article__toc { padding: 16px 18px; margin-bottom: 28px; }
  .article__body { font-size: 15px; }
  .article__body h2 { font-size: 19px; padding: 12px 14px; margin: 36px 0 16px; }
  .article__body h3 { font-size: 17px; margin: 24px 0 12px; }
  .article__body table { font-size: 13px; }
  .article__body table th,
  .article__body table td { padding: 10px 12px; }
  .articles-list__title { font-size: 20px; }
  .articles-list__card { padding: 18px; }
}

/* ============================================
   記事末尾「PR｜サービス例」セクション
   （個人事業主向け記事からLPへの自然な動線）
   ============================================ */
.article__sponsored {
  margin-top: 56px;
  padding: 28px 28px 24px;
  background: var(--c-bg-soft);
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
}
.article__sponsored-label {
  font-size: 11px;
  color: var(--c-text-mute);
  letter-spacing: 0.12em;
  margin: 0 0 6px 0;
  font-weight: 700;
  text-transform: uppercase;
}
.article__sponsored-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--c-text);
  margin: 0 0 6px 0;
  border: none;
  padding: 0;
}
.article__sponsored-lead {
  font-size: 13px;
  color: var(--c-text-mute);
  line-height: 1.75;
  margin: 0 0 18px 0;
}
.article__sponsored-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}
.article__sponsored-card {
  display: flex;
  flex-direction: column;
  padding: 18px 18px 16px;
  background: #fff;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: all 0.15s;
}
.article__sponsored-card:hover {
  border-color: var(--c-navy);
  transform: translateY(-2px);
  box-shadow: var(--sh-sm);
}
.article__sponsored-card__name {
  font-weight: 800;
  font-size: 15px;
  color: var(--c-navy);
  margin-bottom: 6px;
  line-height: 1.4;
}
.article__sponsored-card__desc {
  font-size: 13px;
  color: var(--c-text-mute);
  line-height: 1.7;
  margin: 0 0 12px 0;
  flex-grow: 1;
}
.article__sponsored-card__cta {
  font-size: 13px;
  color: var(--c-navy);
  font-weight: 700;
  margin-top: auto;
}
.article__sponsored-card__cta::after {
  content: " ›";
}

@media (max-width: 600px) {
  .article__sponsored { padding: 22px 20px 18px; }
  .article__sponsored-title { font-size: 16px; }
  .article__sponsored-grid { gap: 12px; }
  .article__sponsored-card { padding: 16px; }
}