.article-shell{max-width:680px;margin:0 auto}.article-meta{color:var(--brand-text-soft);font-size:.94rem;margin-bottom:28px}.article-content{font-size:1.06rem}.article-content h2,.article-content h3{margin-top:32px;color:var(--brand-primary-dark)}.post-nav{display:flex;justify-content:space-between;gap:18px;padding-top:24px;margin-top:34px;border-top:1px solid var(--brand-border)}