.kb-shell{display:grid;grid-template-columns:280px minmax(0,1fr);gap:2rem;background:radial-gradient(900px 360px at 100% 0%,rgba(120,180,140,.12),transparent 55%),radial-gradient(700px 280px at 0% 8%,rgba(120,170,210,.1),transparent 50%),transparent;width:min(1180px,calc(100% - 2rem));margin:0 auto;padding:6.5rem 0 4rem}.kb-sidebar{position:sticky;top:5.25rem;align-self:start;max-height:calc(100vh - 6rem);overflow:auto;border:1px solid var(--hp-border, #e5e5e5);border-radius:12px;background:var(--hp-surface, #fff);padding:1rem}.kb-kicker{margin:0 0 .75rem;color:var(--hp-muted, #737373);font-size:.72rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase}.kb-nav-link{display:block;border-radius:12px;color:var(--hp-muted, #737373);font-size:.875rem;font-weight:500;padding:.6rem .75rem;text-decoration:none;transition:background-color .18s ease,color .18s ease}.kb-nav-link:hover{background:var(--hp-bg, #f5f5f5);color:var(--hp-text, #171717)}.kb-nav-link.active{background:#0a0a0a;color:#fff}.kb-content{min-width:0}.kb-hero{position:relative;border:1px solid var(--hp-border, #e5e5e5);border-radius:16px;margin-bottom:2.5rem;padding:1.75rem 1.5rem 2rem;background:linear-gradient(180deg,#ffffffeb,#f7f9fcfa),radial-gradient(600px 220px at 0% 0%,rgba(99,140,255,.1),transparent 70%),radial-gradient(480px 180px at 100% 0%,rgba(56,189,148,.08),transparent 65%);overflow:hidden}.kb-hero h1,.kb-chapter h2{color:var(--hp-text, #171717);font-family:Georgia,Times New Roman,Times,serif;font-weight:400;letter-spacing:-.02em}.kb-hero h1{font-size:clamp(2rem,5vw,2.75rem);line-height:1.15;margin:0}.kb-hero>p:last-child{color:var(--hp-muted, #737373);font-size:1rem;line-height:1.7;margin:1rem 0 0;max-width:720px}.kb-layout{display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:3rem}.kb-article{display:grid;gap:3.5rem;max-width:880px}.kb-chapter{scroll-margin-top:6.5rem}.kb-chapter h2{font-size:clamp(1.35rem,3vw,1.75rem);line-height:1.25;margin:0 0 1rem}.kb-prose{color:var(--hp-muted, #737373);font-size:.9375rem;line-height:1.75}.kb-prose p,.kb-prose ul,.kb-prose ol,.kb-prose dl{margin-bottom:1rem}.kb-prose ul,.kb-prose ol{padding-left:1.25rem}.kb-prose li{margin-bottom:.45rem}.kb-prose strong,.kb-prose dt{color:var(--hp-text, #171717);font-weight:650}.kb-prose a{color:var(--hp-text, #171717);text-decoration:underline;text-underline-offset:4px}.kb-prose code{background:var(--hp-bg, #f5f5f5);border-radius:6px;color:var(--hp-text, #171717);font-size:.875em;padding:.12rem .35rem}.kb-prompt,.kb-callout{border:1px solid var(--hp-border, #e5e5e5);border-radius:12px;margin:1.25rem 0;padding:1rem}.kb-prompt{background:var(--hp-bg, #f5f5f5)}.kb-prompt span{color:var(--hp-muted, #737373);display:block;font-size:.72rem;font-weight:700;letter-spacing:.12em;margin-bottom:.45rem;text-transform:uppercase}.kb-prompt code{background:transparent;display:block;font-size:.875rem;padding:0;white-space:normal}.kb-callout{background:var(--hp-surface, #fff)}.kb-callout p{margin:.35rem 0 0}.kb-glossary{display:grid;gap:.8rem}.kb-glossary dd{margin-left:0}.kb-toc{position:sticky;top:5.25rem;align-self:start;border:1px solid var(--hp-border, #e5e5e5);border-radius:12px;background:var(--hp-surface, #fff);padding:1rem}.kb-toc a{color:var(--hp-muted, #737373);display:block;font-size:.8125rem;margin:.55rem 0;text-decoration:none}.kb-toc a:hover{color:var(--hp-text, #171717)}@media (max-width: 991.98px){.kb-shell{display:block;padding-top:5.75rem}.kb-sidebar{position:static;max-height:none;margin-bottom:2rem}.kb-sidebar nav{display:flex;gap:.5rem;overflow:auto;padding-bottom:.15rem}.kb-nav-link{white-space:nowrap}.kb-layout{display:block}.kb-toc{display:none}}