.blog-hero {
  max-width: 58rem;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.35rem;
}

.post-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  background: var(--surface);
  box-shadow: 0 1.2rem 3.5rem rgba(11, 52, 44, 0.07);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 1.7rem 4.5rem rgba(11, 52, 44, 0.12);
}

.post-card__image {
  display: block;
  width: 100%;
  height: 18rem;
  object-fit: cover;
}

.post-card__body {
  display: flex;
  flex: 1;
  padding: 1.35rem;
  flex-direction: column;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  color: var(--copy);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.66rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.post-card h2 {
  margin: 0.9rem 0 0.7rem;
  font-size: 1.55rem;
  line-height: 1.08;
}

.post-card p {
  color: var(--copy);
  font-size: 0.9rem;
}

.post-card__link {
  display: inline-flex;
  min-height: 2.75rem;
  margin-top: auto;
  align-items: center;
  color: var(--brand);
  font-size: 0.84rem;
  font-weight: 750;
  text-decoration: none;
}

.breadcrumbs {
  display: flex;
  margin: 0 0 2rem;
  padding: 0;
  flex-wrap: wrap;
  gap: 0.4rem;
  color: var(--copy);
  font-size: 0.78rem;
  list-style: none;
}

.breadcrumbs li:not(:last-child)::after {
  margin-left: 0.4rem;
  content: "/";
  opacity: 0.45;
}

.article-hero {
  display: grid;
  margin-bottom: 2rem;
  grid-template-columns: minmax(0, 1.05fr) minmax(18rem, 0.95fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
}

.article-hero h1 {
  max-width: 18ch;
  font-size: clamp(2.45rem, 6vw, 4.35rem);
}

.article-hero__image {
  width: 100%;
  height: clamp(22rem, 40vw, 34rem);
  border-radius: 1.7rem;
  object-fit: cover;
  box-shadow: 0 1.8rem 5rem rgba(11, 52, 44, 0.16);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 15rem;
  gap: 3rem;
  align-items: start;
}

.article-body {
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-radius: 1.7rem;
  background: var(--surface);
  box-shadow: 0 1.8rem 5rem rgba(11, 52, 44, 0.08);
}

.article-body h2 {
  margin: 2.6rem 0 0.85rem;
  font-size: clamp(1.65rem, 3vw, 2.15rem);
  line-height: 1.15;
}

.article-body h2:first-child {
  margin-top: 0;
}

.article-body h3 {
  margin: 1.8rem 0 0.65rem;
  font-size: 1.3rem;
}

.article-body p,
.article-body li {
  color: #36554d;
}

.article-body a {
  color: var(--brand);
  font-weight: 700;
  text-underline-offset: 0.2em;
}

.article-body blockquote {
  margin: 2rem 0;
  padding: 1.2rem 1.35rem;
  border-left: 4px solid var(--brand);
  border-radius: 0 1rem 1rem 0;
  background: rgba(11, 52, 44, 0.06);
  color: var(--brand);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.18rem;
}

.article-toc {
  position: sticky;
  top: 1.5rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: rgba(244, 250, 247, 0.78);
}

.article-toc h2 {
  margin-bottom: 0.8rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.article-toc ol {
  margin: 0;
  padding-left: 1.1rem;
}

.article-toc li + li {
  margin-top: 0.55rem;
}

.article-toc a {
  color: var(--copy);
  font-size: 0.78rem;
  text-decoration: none;
}

.article-cta {
  margin-top: 2.8rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border-radius: 1.5rem;
  background: linear-gradient(135deg, var(--brand), #165246, #141414);
  color: white;
}

.article-cta h2,
.article-cta p {
  color: white;
}

.article-cta p {
  opacity: 0.78;
}

.article-cta .primary-link {
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.12);
}

.related-posts {
  margin-top: 3rem;
}

.related-posts > h2 {
  font-size: 2rem;
}

@media (max-width: 900px) {
  .blog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .blog-grid,
  .article-hero {
    grid-template-columns: 1fr;
  }

  .article-hero__image {
    height: 22rem;
  }

  .post-card__image {
    height: 15rem;
  }
}