/* Article page layout and components for Japan Insights for Professionals */

.article-page {
  background: var(--light-bg);
  padding: 56px 0 72px;
}

.article-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

.article-breadcrumb {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 22px;
}

.article-breadcrumb a {
  color: var(--deep-blue);
  font-weight: 700;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 760px) 280px;
  gap: 36px;
  align-items: start;
}

.article-main {
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(16, 42, 67, 0.06);
  padding: 42px;
}

.article-category {
  display: inline-block;
  background: var(--soft-blue);
  color: var(--deep-blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 10px;
  margin-bottom: 18px;
}

.article-main h1 {
  margin: 0 0 16px;
  color: var(--navy);
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.article-meta-line {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.article-feature-image {
  margin: 0 0 32px;
  border: 1px solid var(--border);
  background: var(--light-bg);
}

.article-feature-image img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.article-feature-image figcaption {
  padding: 10px 14px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
  border-top: 1px solid var(--border);
  background: var(--white);
}

.article-lead {
  font-size: 1.18rem;
  color: #374151;
  line-height: 1.75;
  margin-bottom: 32px;
  border-top: 1px solid var(--border);
  padding-top: 28px;
}

.article-main h2 {
  color: var(--navy);
  font-size: 1.65rem;
  line-height: 1.25;
  margin-top: 42px;
  margin-bottom: 14px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.article-main h3 {
  color: var(--navy);
  font-size: 1.22rem;
  margin-top: 28px;
  margin-bottom: 10px;
}

.article-main p {
  margin: 0 0 18px;
  line-height: 1.78;
}

.article-main ul,
.article-main ol {
  margin: 0 0 22px;
  padding-left: 24px;
}

.article-main li {
  margin-bottom: 8px;
  line-height: 1.7;
}

.article-summary-box,
.article-note-box {
  border-left: 4px solid var(--accent);
  background: #fbf7ec;
  padding: 20px 22px;
  margin: 28px 0;
}

.article-summary-box h2,
.article-note-box h2 {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
  font-size: 1.35rem;
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  margin: 26px 0;
  font-size: 0.95rem;
}

.article-table th,
.article-table td {
  border: 1px solid var(--border);
  padding: 12px;
  text-align: left;
  vertical-align: top;
}

.article-table th {
  background: var(--soft-blue);
  color: var(--navy);
}

.article-sidebar {
  position: static;
}

.toc-box,
.sidebar-related-box {
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(16, 42, 67, 0.06);
  padding: 24px;
}

.sidebar-related-box {
  margin-top: 18px;
  padding: 20px;
}

.toc-box h2,
.sidebar-related-box h2 {
  margin: 0 0 14px;
  color: var(--navy);
  font-size: 1.1rem;
}

.toc-box ol {
  margin: 0;
  padding-left: 20px;
}

.toc-box li {
  margin-bottom: 10px;
  font-size: 0.94rem;
  line-height: 1.5;
}

.sidebar-related-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.sidebar-related-card {
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.sidebar-related-card:first-child {
  border-top: none;
  padding-top: 0;
}

.sidebar-related-thumb,
.read-next-thumb {
  display: block;
  background: var(--light-bg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.sidebar-related-thumb {
  margin-bottom: 8px;
}

.sidebar-related-thumb img,
.read-next-thumb img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 0.2s ease;
}

.sidebar-related-card:hover img,
.read-next-card:hover img {
  transform: scale(1.02);
}

.sidebar-related-card > a:not(.sidebar-related-thumb) {
  display: block;
  color: var(--deep-blue);
  font-weight: 800;
  font-size: 0.92rem;
  line-height: 1.45;
}

.read-next-box {
  margin: 42px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.read-next-box h2 {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
  font-size: 1.35rem;
}

.read-next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 16px;
}

.read-next-card {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  border: 1px solid var(--border);
  background: var(--white);
  padding: 14px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.read-next-card:hover {
  box-shadow: 0 8px 22px rgba(16, 42, 67, 0.08);
  transform: translateY(-1px);
}

.read-next-content a {
  display: block;
  color: var(--deep-blue);
  font-weight: 800;
  line-height: 1.45;
  margin-bottom: 6px;
}

.read-next-content p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.6;
}

.email-template {
  background: #f8fafc;
  border: 1px solid var(--border);
  padding: 20px 22px;
  margin: 26px 0;
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.75;
  white-space: normal;
}

.decision-grid,
.comparison-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 28px 0;
}

.decision-card,
.comparison-card {
  border: 1px solid var(--border);
  background: var(--white);
  padding: 20px;
}

.decision-card h3,
.comparison-card h3 {
  margin-top: 0;
}

.callout-sentence {
  font-size: 1.05rem;
  color: var(--navy);
  font-weight: 700;
  line-height: 1.65;
  margin: 30px 0;
  padding: 18px 20px;
  background: var(--soft-blue);
  border: 1px solid var(--border);
}

.article-footer-note {
  margin-top: 42px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
    order: -1;
  }

  .decision-grid,
  .comparison-box {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .article-page {
    padding: 36px 0 56px;
  }

  .article-main {
    padding: 28px 22px;
  }

  .article-container {
    padding: 0 20px;
  }

  .article-main h1 {
    font-size: 2rem;
  }

  .article-lead {
    font-size: 1.05rem;
  }

  .article-feature-image img {
    aspect-ratio: 4 / 3;
  }

  .read-next-card {
    grid-template-columns: 1fr;
  }
}