:root {
  --detail-surface: #ffffff;
  --detail-surface-muted: #f8fafc;
  --detail-border: rgba(15, 23, 42, 0.08);
  --detail-title: #0b1b3b;
  --detail-text: #4b5563;
  --detail-muted: #6b7280;
  --detail-accent: #f97316;
}

.post-detail-page {
  padding: 44px 0 72px;
}

.detail-heading {
  margin-bottom: 32px;
}

.detail-eyebrow {
  margin-bottom: 12px;
  color: var(--detail-accent);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.detail-title {
  max-width: 14ch;
  margin: 0;
  color: var(--detail-title);
  font-size: clamp(2.3rem, 4vw, 3.4rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.detail-summary {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--detail-text);
  font-size: 18px;
  line-height: 1.75;
}

.detail-inline-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 18px;
  color: var(--detail-muted);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.detail-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(280px, 0.9fr);
  gap: 32px;
  align-items: start;
}

.detail-main-surface,
.detail-sidebar-section,
.sidebar-related-card,
.detail-empty-state {
  background: var(--detail-surface);
  border: 1px solid var(--detail-border);
  border-radius: 18px;
  box-shadow: 0 2px 12px rgba(15, 23, 42, 0.05);
}

.detail-shell.no-sidebar {
  grid-template-columns: minmax(0, 1fr);
}

.detail-main-surface {
  overflow: hidden;
}

.detail-figure {
  margin: 0;
  background: var(--detail-surface-muted);
  border-bottom: 1px solid var(--detail-border);
}

.detail-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.detail-content {
  padding: 34px;
}

.detail-body {
  max-width: 720px;
  color: var(--detail-text);
  font-size: 16px;
  line-height: 1.9;
}

.detail-body p {
  margin: 0 0 1.2em;
}

.detail-sidebar {
  display: grid;
  gap: 0;
}

.detail-sidebar-section {
  padding: 24px;
}

.detail-sidebar-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 18px;
}

.detail-sidebar-header h2 {
  margin: 0 0 6px;
  color: var(--detail-title);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}

.detail-sidebar-header p {
  margin: 0;
  color: var(--detail-text);
  font-size: 14px;
  line-height: 1.75;
}

.sidebar-related-list {
  display: grid;
  gap: 14px;
}

.sidebar-related-link {
  display: block;
  color: inherit;
}

.sidebar-related-link:hover {
  color: inherit;
  text-decoration: none;
}

.detail-link {
  color: var(--detail-accent);
  font-size: 14px;
  font-weight: 700;
}

.detail-link:hover {
  color: #ea580c;
  text-decoration: none;
}

.sidebar-related-card {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 10px;
  border-radius: 14px;
}

.sidebar-related-thumb {
  width: 84px;
  height: 84px;
  object-fit: cover;
  display: block;
  border-radius: 10px;
  background: var(--detail-surface-muted);
}

.sidebar-related-content {
  min-width: 0;
}

.sidebar-related-meta {
  margin-bottom: 8px;
  color: var(--detail-muted);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.sidebar-related-content h3 {
  margin: 0;
  color: var(--detail-title);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.35;
}

.detail-empty-state {
  padding: 34px;
  margin-bottom: 40px;
}

.detail-empty-state h1 {
  margin: 0 0 12px;
  color: var(--detail-title);
  font-size: 34px;
  font-weight: 800;
  line-height: 1.1;
}

.detail-empty-state p {
  max-width: 620px;
  margin: 0 0 22px;
  color: var(--detail-text);
  font-size: 16px;
  line-height: 1.75;
}

@media (max-width: 991px) {
  .detail-shell {
    grid-template-columns: 1fr;
  }

  .detail-sidebar {
    margin-top: 8px;
  }
}

@media (max-width: 767px) {
  .post-detail-page {
    padding: 28px 0 56px;
  }

  .detail-title {
    max-width: none;
    font-size: 2rem;
  }

  .detail-summary {
    font-size: 16px;
  }

  .detail-content,
  .detail-sidebar-section,
  .detail-empty-state {
    padding: 22px;
  }

  .sidebar-related-card {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 12px;
  }

  .sidebar-related-thumb {
    width: 72px;
    height: 72px;
  }
}