.article-shell{padding:126px 0 84px}.article-title{color:var(--brand-primary-dark);font-size:2.55rem;line-height:1.14;margin-bottom:14px}.article-body{color:var(--brand-text);font-size:1.02rem}.article-body img{display:block;margin:28px 0;background:var(--brand-bg-alt)}.toc-panel{position:sticky;top:104px;padding:22px;border-left:4px solid var(--brand-accent);background:var(--brand-bg-alt)}.article-nav{display:flex;justify-content:space-between;gap:20px;padding-top:28px;margin-top:34px;border-top:1px solid var(--brand-border)}