.pillar-hero{background-color:#fff;padding:calc(64px + 4rem) 0 3rem;position:relative;text-align:center}.pillar-hero__title{color:var(--color-gray-900);font-size:clamp(2rem,5vw,3rem);font-weight:600;letter-spacing:-.025em;margin-bottom:var(--spacing-md)}.pillar-hero__subtitle{color:var(--color-gray-600);font-size:1.125rem;line-height:1.75;margin:0 auto;max-width:680px}.pillar{display:flex;gap:3rem;margin:0 auto;max-width:1080px;padding:3rem var(--spacing-lg)}.pillar__toc{align-self:flex-start;flex-shrink:0;max-height:calc(100vh - 100px);overflow-y:auto;position:sticky;top:80px;width:220px}.pillar__toc-title{color:var(--color-gray-400);font-size:.75rem;font-weight:600;letter-spacing:.1em;margin-bottom:var(--spacing-md);text-transform:uppercase}.pillar__toc-list{list-style:none;margin:0;padding:0}.pillar__toc-item{margin-bottom:var(--spacing-xs)}.pillar__toc-link{border-left:2px solid transparent;color:var(--color-gray-500);display:block;font-size:.85rem;line-height:1.5;padding:4px 0 4px 12px;text-decoration:none;transition:all var(--transition-fast)}.pillar__toc-link--active,.pillar__toc-link:hover{color:var(--color-primary)}.pillar__toc-link--active{border-left-color:var(--color-primary)}.pillar__toc-link--h3{font-size:.8rem;padding-left:24px}.pillar__content{flex:1;max-width:760px;min-width:0}.pillar__content h2{color:var(--color-gray-900);font-size:1.75rem;font-weight:600;margin:3rem 0 1rem;padding-top:1rem}.pillar__content h2:first-child{margin-top:0}.pillar__content h3{color:var(--color-gray-900);font-size:1.375rem;font-weight:600;margin:2rem 0 .75rem}.pillar__content p{color:var(--color-gray-700);font-size:1.0625rem;line-height:1.8;margin-bottom:1.5rem}.pillar__content a{color:var(--color-primary);text-decoration:underline}.pillar__content a:hover{color:var(--color-primary-dark)}.pillar__content strong{color:var(--color-gray-900);font-weight:600}.pillar__content ol,.pillar__content ul{margin-bottom:1.5rem;padding-left:1.5rem}.pillar__content li{color:var(--color-gray-700);font-size:1.0625rem;line-height:1.8;margin-bottom:.5rem}.pillar__callout{background:rgba(166,50,255,.05);border-left:4px solid var(--color-primary);border-radius:0 8px 8px 0;margin:2rem 0;padding:1.5rem}.pillar__callout p{font-size:1rem;margin-bottom:.75rem}.pillar__callout p:last-child{margin-bottom:0}.pillar__source{color:var(--color-gray-400);font-size:.8rem;font-style:italic}.pillar__related{border-top:1px solid var(--color-gray-200);margin:0 auto;max-width:1080px;padding:4rem var(--spacing-lg)}.pillar__related-title{color:var(--color-gray-900);font-size:1.5rem;font-weight:600;margin-bottom:2rem}.pillar__related-grid{display:grid;gap:1.5rem;grid-template-columns:1fr}@media (min-width:768px){.pillar__related-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:1024px){.pillar__related-grid{grid-template-columns:repeat(3,1fr)}}.pillar__related-card{background:var(--color-gray-100);border-radius:var(--radius-lg);padding:1.5rem;text-decoration:none;transition:all var(--transition-normal)}.pillar__related-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.pillar__related-card h4{color:var(--color-gray-900);font-size:1rem;font-weight:600;margin-bottom:.5rem}.pillar__related-card p{color:var(--color-gray-600);font-size:.875rem;line-height:1.6;margin:0}@media (max-width:768px){.pillar{flex-direction:column;padding:2rem var(--spacing-lg)}.pillar__toc{border-bottom:1px solid var(--color-gray-200);margin-bottom:var(--spacing-lg);max-height:none;padding-bottom:var(--spacing-md);position:static;width:100%}.pillar__toc-link{padding:4px 0 4px 12px}.pillar__toc-link--h3{padding-left:24px}.pillar__content h2{font-size:1.5rem;margin:2rem 0 .75rem}.pillar__content h3{font-size:1.25rem;margin:1.5rem 0 .5rem}.pillar-hero{padding:calc(64px + 2rem) 0 2rem}}