html {
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
}

.site-shell {
  min-height: 100%;
}

.site-header-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-24);
  padding: var(--space-24) 0;
  border-bottom: var(--border-width-hairline) solid var(--border-hairline);
}

.site-header-links,
.site-footer-links,
.content-meta,
.inline-link-list {
  display: flex;
  align-items: center;
  gap: var(--space-16);
  flex-wrap: wrap;
}

.site-header-links a,
.site-footer-links a {
  color: var(--text-secondary);
}

.site-header-links .btn,
.cta-actions .btn,
.article-prose .cta-card .btn {
  text-decoration: none;
}

.site-header-links .btn-primary,
.cta-actions .btn-primary,
.article-prose .cta-card .btn-primary {
  color: var(--text-inverted);
}

.site-header-links .btn-secondary,
.cta-actions .btn-secondary,
.article-prose .cta-card .btn-secondary {
  color: var(--text-primary);
}

.site-header-links a:hover,
.site-footer-links a:hover,
.inline-link-list a:hover,
.article-prose a:hover,
.toc-card a:hover {
  text-decoration: underline;
}

.site-header-links .btn:hover,
.cta-actions .btn:hover,
.article-prose .cta-card .btn:hover {
  text-decoration: none;
}

.content-page-main {
  padding: var(--space-48) 0 var(--space-96);
}

.content-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(280px, 0.9fr);
  gap: var(--space-32);
  align-items: start;
  padding-bottom: var(--space-48);
}

.eyebrow {
  color: var(--accent-mark);
  margin-bottom: var(--space-16);
}

.content-hero h1 {
  margin-bottom: var(--space-24);
}

.content-lead {
  max-width: 48rem;
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.content-meta {
  margin-top: var(--space-24);
}

.content-meta .chip {
  background: var(--surface-raised);
}

.toc-card,
.cta-card,
.callout-card,
.placeholder-card,
.media-card,
.resource-card,
.comparison-card,
.checklist-card,
.guide-list-card,
.faq-item {
  border: var(--border-width-hairline) solid var(--border-hairline);
  background: rgba(249, 249, 248, 0.92);
}

.toc-card,
.cta-card,
.callout-card,
.comparison-card,
.checklist-card,
.guide-list-card {
  padding: var(--space-24);
}

.toc-card {
  position: sticky;
  top: var(--space-24);
}

.toc-card ol {
  margin: var(--space-16) 0 0;
  padding-left: var(--space-16);
}

.toc-card li {
  margin-bottom: var(--space-12);
  color: var(--text-secondary);
}

.toc-card a {
  color: var(--text-primary);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(280px, 0.9fr);
  gap: var(--space-32);
}

.article-prose {
  min-width: 0;
}

.article-prose section {
  padding: var(--space-32) 0;
  border-top: var(--border-width-hairline) solid var(--border-hairline);
}

.article-prose h2 {
  font-size: clamp(1.7rem, 2vw, 2.15rem);
  margin-bottom: var(--space-16);
}

.article-prose h3 {
  font-size: 1.2rem;
  margin: var(--space-24) 0 var(--space-12);
}

.article-prose p,
.article-prose ul,
.article-prose ol,
.article-prose blockquote,
.article-prose table,
.article-prose figure {
  margin-bottom: var(--space-20, 1.25rem);
}

.article-prose p,
.article-prose li {
  color: var(--text-secondary);
  line-height: 1.72;
}

.article-prose ul,
.article-prose ol {
  padding-left: var(--space-24);
}

.article-prose li + li {
  margin-top: var(--space-8);
}

.article-prose strong,
.article-prose h2,
.article-prose h3 {
  color: var(--text-primary);
}

.article-prose code {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-mono);
  background: var(--surface-raised);
  padding: 0.125rem 0.375rem;
}

.article-prose a {
  color: var(--accent-mark);
}

.callout-card {
  position: relative;
  padding: var(--space-24);
  margin: var(--space-24) 0;
  border-left: 3px solid var(--accent-mark);
}

.callout-card p:last-child,
.cta-card p:last-child,
.checklist-card p:last-child,
.guide-list-card p:last-child,
.resource-card p:last-child {
  margin-bottom: 0;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-24);
}

.media-card,
.placeholder-card {
  padding: var(--space-16);
}

.media-card img {
  width: 100%;
  height: auto;
  border: var(--border-width-regular) solid rgba(17, 17, 17, 0.16);
  background: #111111;
}

.placeholder-frame {
  display: grid;
  place-items: center;
  min-height: 280px;
  border: 1px dashed rgba(74, 93, 139, 0.6);
  background:
    linear-gradient(135deg, rgba(74, 93, 139, 0.08), rgba(74, 93, 139, 0.02)),
    var(--surface-raised);
  color: var(--text-secondary);
  text-align: center;
  padding: var(--space-24);
}

.placeholder-frame strong {
  display: block;
  margin-bottom: var(--space-8);
  color: var(--text-primary);
}

.media-card figcaption,
.placeholder-card figcaption {
  margin-top: var(--space-12);
  color: var(--text-secondary);
  font-size: var(--font-size-body-sm);
}

.comparison-card {
  overflow-x: auto;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
}

.comparison-table caption {
  caption-side: top;
  text-align: left;
  margin-bottom: var(--space-16);
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-12) var(--space-16);
  border-top: var(--border-width-hairline) solid var(--border-hairline);
  vertical-align: top;
  text-align: left;
}

.comparison-table th {
  color: var(--text-primary);
  font-weight: var(--font-weight-semibold);
}

.comparison-table td {
  color: var(--text-secondary);
}

.comparison-table thead th {
  border-top: none;
}

.comparison-table tbody tr td:nth-child(3) {
  color: var(--text-primary);
}

.checklist-card ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: 0;
}

.checklist-card li {
  position: relative;
  padding-left: var(--space-24);
}

.checklist-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 10px;
  height: 10px;
  border: 1px solid var(--accent-mark);
  background: rgba(74, 93, 139, 0.12);
}

.resource-grid,
.guide-grid,
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-24);
}

.resource-card,
.faq-item {
  padding: var(--space-24);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.resource-card:hover,
.faq-item:hover {
  transform: translateY(-2px);
  border-color: rgba(17, 17, 17, 0.22);
  box-shadow: 0 14px 32px rgba(17, 17, 17, 0.04);
}

.resource-card h3,
.faq-item h3 {
  margin-bottom: var(--space-12);
}

.resource-card p,
.faq-item p {
  color: var(--text-secondary);
}

.cta-card {
  margin-top: var(--space-16);
  background:
    linear-gradient(135deg, rgba(74, 93, 139, 0.08), rgba(74, 93, 139, 0.02)),
    var(--surface-base);
}

.cta-actions {
  display: flex;
  gap: var(--space-16);
  flex-wrap: wrap;
  margin-top: var(--space-24);
}

.guide-list {
  list-style: none;
  padding: 0;
  margin: var(--space-16) 0 0;
}

.guide-list li + li {
  margin-top: var(--space-16);
  padding-top: var(--space-16);
  border-top: var(--border-width-hairline) solid var(--border-hairline);
}

.guide-list a,
.faq-item a,
.resource-card a,
.article-prose .cta-card a {
  color: var(--accent-mark);
}

.content-footer {
  padding: var(--space-32) 0;
  border-top: var(--border-width-hairline) solid var(--border-hairline);
}

.content-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-16);
  flex-wrap: wrap;
}

.guide-nav {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  gap: var(--space-16);
  padding: var(--space-32) 0;
  border-top: var(--border-width-hairline) solid var(--border-hairline);
}

.guide-nav-link {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-16) var(--space-20);
  border: var(--border-width-hairline) solid var(--border-hairline);
  background: rgba(249, 249, 248, 0.92);
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  min-width: 0;
  max-width: calc(50% - var(--space-8));
}

.guide-nav-link:hover {
  transform: translateY(-2px);
  border-color: rgba(17, 17, 17, 0.22);
  box-shadow: 0 14px 32px rgba(17, 17, 17, 0.04);
  text-decoration: none;
}

.guide-nav-link--prev {
  text-align: left;
}

.guide-nav-link--next {
  text-align: right;
  margin-left: auto;
}

.guide-nav-direction {
  font-size: var(--font-size-body-sm);
  color: var(--text-tertiary);
}

.guide-nav-title {
  color: var(--accent-mark);
  font-weight: var(--font-weight-medium);
  line-height: 1.4;
}

.related-guides {
  padding: var(--space-32) 0;
  border-top: var(--border-width-hairline) solid var(--border-hairline);
}

.related-guides h2 {
  font-size: clamp(1.7rem, 2vw, 2.15rem);
  margin-bottom: var(--space-16);
  color: var(--text-primary);
}

.related-guides > p {
  color: var(--text-secondary);
  line-height: 1.72;
  margin-bottom: var(--space-24);
}

@media (max-width: 960px) {
  .content-hero,
  .article-layout {
    grid-template-columns: 1fr;
  }

  .toc-card {
    position: static;
  }

  .content-hero {
    padding-bottom: var(--space-32);
  }
}

@media (max-width: 768px) {
  .content-page-main {
    padding-top: var(--space-32);
    padding-bottom: var(--space-64);
  }

  .site-header-nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-header-links {
    width: 100%;
    justify-content: space-between;
  }

  .media-grid,
  .resource-grid,
  .guide-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .placeholder-frame {
    min-height: 220px;
  }

  .guide-nav {
    flex-direction: column;
  }

  .guide-nav-link {
    max-width: 100%;
  }

  .guide-nav-link--next {
    margin-left: 0;
  }
}