.knowledge-shell{background:linear-gradient(180deg,#f8fafc 0,#fff 320px);min-height:70vh}.knowledge-hero,.knowledge-article{width:100%;max-width:900px;margin:0 auto;padding-left:var(--container-padding);padding-right:var(--container-padding)}.knowledge-hero{padding-top:var(--space-20);padding-bottom:var(--space-14)}.knowledge-kicker{color:var(--accent-primary);font-size:var(--text-body-sm);font-weight:800;letter-spacing:.08em;margin-bottom:var(--space-4);text-transform:uppercase}.knowledge-hero h1{font-size:clamp(2.25rem,6vw,4.5rem);margin-bottom:var(--space-6)}.knowledge-lead{font-size:var(--text-lead);line-height:var(--leading-relaxed);max-width:760px}.knowledge-grid{display:grid;gap:var(--space-6);grid-template-columns:repeat(2,minmax(0,1fr));padding-bottom:var(--space-20)}.knowledge-card{display:flex;flex-direction:column;gap:var(--space-3);background:#fff;border:1px solid var(--border-subtle);border-radius:var(--radius-xl);padding:var(--space-8)}.knowledge-card:hover{border-color:var(--accent-border);box-shadow:var(--shadow-md)}.knowledge-card__meta,.knowledge-meta{color:var(--text-muted);font-size:var(--text-body-sm)}.knowledge-card h2,.knowledge-card h3{font-size:var(--text-heading-md)}.knowledge-article{padding-top:var(--space-14);padding-bottom:var(--space-24)}.knowledge-breadcrumbs{display:flex;flex-wrap:wrap;gap:var(--space-2);color:var(--text-muted);font-size:var(--text-body-sm);margin-bottom:var(--space-8)}.knowledge-article__header h1{font-size:clamp(2rem,5vw,3.5rem);margin:var(--space-4) 0 var(--space-5)}.knowledge-origin{margin:var(--space-8) 0 var(--space-5);padding:var(--space-5) var(--space-6);border-left:3px solid var(--accent-primary);background:#fff}.knowledge-origin__label{margin:0 0 var(--space-2);font-size:var(--text-body-sm);font-weight:800;color:var(--text-primary)}.knowledge-origin p:last-child{margin:0;color:var(--text-secondary);line-height:var(--leading-relaxed)}.knowledge-answer{margin:var(--space-5) 0 var(--space-8);padding:var(--space-6);border:1px solid var(--accent-border);border-radius:var(--radius-lg);background:var(--accent-subtle);color:var(--text-primary);font-size:var(--text-body-lg);line-height:var(--leading-relaxed)}.knowledge-body{margin-top:var(--space-10);font-size:1.05rem;line-height:1.9}.knowledge-body h2{margin-top:var(--space-14);margin-bottom:var(--space-5);font-size:var(--text-heading-lg)}.knowledge-body h3{margin-top:var(--space-10);margin-bottom:var(--space-4);font-size:var(--text-heading-md)}.knowledge-body p,.knowledge-body ul,.knowledge-body ol,.knowledge-body pre,.knowledge-body blockquote{margin-bottom:var(--space-5)}.knowledge-body ul,.knowledge-body ol{padding-left:1.5rem;color:var(--text-secondary)}.knowledge-body a{color:var(--accent-primary);text-decoration:underline;text-underline-offset:.18em}.knowledge-body code{font-family:var(--font-mono);background:var(--bg-tertiary);border-radius:var(--radius-sm);padding:.1em .35em}.knowledge-body pre{overflow-x:auto;padding:var(--space-6);border-radius:var(--radius-lg);background:#20272d;color:#f3f6f8;-webkit-overflow-scrolling:touch}.knowledge-body pre code{display:block;min-width:max-content;padding:0;background:transparent;border-radius:0;color:inherit;line-height:1.75;white-space:pre}.knowledge-related{margin-top:var(--space-16);padding-top:var(--space-10);border-top:1px solid var(--border-subtle)}.knowledge-related h2{margin-bottom:var(--space-6)}.knowledge-related__grid{display:grid;gap:var(--space-4);grid-template-columns:repeat(2,minmax(0,1fr))}.knowledge-related__item{border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:var(--space-5)}.knowledge-product{margin-top:var(--space-10);padding:var(--space-6);border-radius:var(--radius-lg);background:var(--bg-dark-accent);color:var(--text-inverse)}.knowledge-product h2,.knowledge-product strong{color:var(--text-inverse)}.knowledge-product p{color:var(--text-inverse-muted)}@media(max-width:720px){.knowledge-grid,.knowledge-related__grid{grid-template-columns:1fr}.knowledge-hero{padding-top:var(--space-14)}.knowledge-card,.knowledge-answer{padding:var(--space-5)}}