.blog-hero { padding: 56px 0 32px; text-align: center; }
.blog-hero h1 { margin-bottom: 12px; }
.blog-hero p { max-width: 640px; margin: 0 auto; font-size: 1.05rem; }
.post-grid {
  display: grid; gap: 20px;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 32px;
}
@media (max-width: 900px) { .post-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .post-grid { grid-template-columns: 1fr; } }
.post-card {
  display: flex; flex-direction: column;
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: box-shadow var(--t-med), border-color var(--t-med), transform var(--t-med);
}
.post-card:hover { text-decoration: none; border-color: #CFDDF3; box-shadow: var(--shadow); transform: translateY(-1px); }
.post-card__body { padding: 20px 22px; }
.post-card__tag {
  display: inline-block; font-size: .72rem; font-weight: 600;
  letter-spacing: .04em; text-transform: uppercase;
  color: var(--blue-deep); background: var(--info-bg);
  padding: 3px 8px; border-radius: 999px; margin-bottom: 10px;
}
.post-card h3 { font-size: 1.05rem; color: var(--text); margin-bottom: 8px; }
.post-card p { font-size: .9rem; color: var(--text-body); margin: 0; }
.post-card__meta {
  font-size: .78rem; color: var(--text-body);
  margin-top: 12px; padding-top: 12px;
  border-top: 1px solid var(--border);
}
.article-wrap { max-width: 780px; margin: 0 auto; padding: 24px 0 64px; }
.article-wrap h1 { margin-bottom: 16px; }
.article-wrap h2 { margin-top: 40px; }
.article-wrap h3 { margin-top: 28px; }
.article-wrap p, .article-wrap li { font-size: 1.02rem; line-height: 1.7; }
.article-wrap ul, .article-wrap ol { padding-left: 1.4em; margin-bottom: 1em; }
.article-wrap li { margin-bottom: 8px; }
.article-meta {
  color: var(--text-body); font-size: .9rem;
  padding-bottom: 16px; margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.article-toc {
  background: var(--bg-pale); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 24px; margin: 24px 0 32px;
}
.article-toc h3 { margin: 0 0 10px; font-size: .95rem; }
.article-toc ol { margin: 0; padding-left: 1.4em; }
.article-toc li { margin-bottom: 6px; font-size: .92rem; }