.inv3 .article-page{padding-block:calc(var(--header-h) + clamp(28px, 4vw, 56px)) clamp(56px,8vw,100px)}.inv3 .article-shell{width:100%;max-width:var(--maxw,1200px);margin-inline:auto;padding-inline:var(--gutter,24px)}.inv3 .article-inner{max-width:72ch;margin-inline:auto}.inv3 .article-crumb{margin-bottom:26px;font-size:13px}.inv3 .article-meta{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-bottom:20px}.inv3 .article-title{margin:0 0 24px}.inv3 .article-back{display:inline-flex;gap:8px;align-items:center;margin-top:52px}.inv3 .article-video-preview{position:fixed;z-index:20;display:grid;gap:3px;width:min(220px,calc(100vw - 24px));padding:10px 12px;border:1px solid var(--border-strong);border-radius:9px;background:var(--bg-elevated);color:var(--fg);box-shadow:0 8px 24px rgba(11,11,10,.16);font-size:12px;line-height:1.45}.inv3 .article-video-preview span{color:var(--fg-muted)}.inv3 .article-video-preview .article-video-title{color:var(--fg);font-weight:700}.inv3 .article-video-preview a{color:var(--accent);font-weight:700;text-decoration:underline;text-underline-offset:3px}