.knowledge-hub{max-width:1200px;margin:auto;padding:20px 5% 64px}.knowledge-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:32px}.knowledge-card{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--surface)}.knowledge-card img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;display:block}.knowledge-card-content{padding:22px}.knowledge-card h2{font-size:23px;line-height:1.5;margin:0 0 12px}.knowledge-card p{font-size:16px;line-height:1.8}.knowledge-card a{color:inherit}.knowledge-card-content>a{font-weight:600;text-decoration:underline}.knowledge-article{max-width:850px;margin:auto;padding:0 24px 64px;font-size:19px;line-height:1.95}.knowledge-article figure{margin:24px 0}.knowledge-article img{width:100%;height:auto;border-radius:12px}.knowledge-article figcaption,.article-meta,.article-source{font-size:14px;color:var(--muted,var(--ink))}.knowledge-article h2{font-size:28px;line-height:1.5;margin-top:38px}.knowledge-article a{text-underline-offset:4px}.article-toc,.article-next{padding:24px;background:var(--surface);border:1px solid var(--line);border-radius:10px}.article-toc ol{padding-left:24px;margin-bottom:0}.knowledge-article section{scroll-margin-top:100px}.article-next{margin:36px 0}.article-next h2{margin-top:0}.article-next .actions{flex-wrap:wrap}.article-lead{font-size:22px}.knowledge-intro{max-width:720px;font-size:20px;line-height:1.8}@media(max-width:900px){.knowledge-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.knowledge-grid{grid-template-columns:1fr}.knowledge-article{padding:0 20px 36px;font-size:18px}.knowledge-article h2{font-size:25px}.article-toc,.article-next{padding:18px}}

.article-real-machine{max-width:460px;margin:32px auto!important}.article-real-machine img{max-height:640px;object-fit:contain;background:var(--surface)}

.knowledge-article p{font-weight:400}.knowledge-article strong{font-weight:700}.knowledge-article section p a,.article-source a,.article-next li a{color:var(--ink);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}.knowledge-article section p a:hover,.article-next li a:hover{color:var(--gold)}.knowledge-article a:focus-visible{outline:2px solid currentColor;outline-offset:4px}.article-next li{margin:10px 0}