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.dark-section{background:#0b151b}.architecture-grid{display:grid;grid-template-columns:1fr minmax(210px,.8fr) 1fr;gap:20px;align-items:stretch}.arch-sources{display:grid;gap:11px}.arch-sources article{border:1px solid #2b4445;border-radius:9px;padding:18px 20px;background:#132429;display:flex;flex-direction:column;gap:4px}.arch-sources small{color:var(--lime);font:800 12px ui-monospace,monospace;letter-spacing:.08em}.arch-sources strong{font-size:20px;letter-spacing:-.035em}.arch-sources span{color:#a2b7ac;font-size:13px}.arch-center{display:flex;align-items:center;justify-content:center;gap:12px}.arch-arrow{color:var(--lime);font-size:28px}.arch-core{border-radius:50%;border:1px solid #8cc38b7e;aspect-ratio:1;width:min(100%,236px);display:flex;flex-direction:column;align-items:center;justify-content:center;background:radial-gradient(circle,#2e493b,#132b2b);text-align:center;box-shadow:0 0 50px #d4ff8b0b}.arch-core span{font-size:32px;color:var(--lime)}.arch-core strong{font-size:15px;margin:8px 0 10px}.arch-core small{font-size:12px;color:#b4cdbb;line-height:1.7}.arch-out{display:grid;gap:11px}.arch-out div{padding:17px;border-bottom:1px solid #36514b;display:flex;flex-direction:column;gap:4px}.arch-out div:first-child{border-top:1px solid #36514b}.arch-out div>span{color:var(--lime);font:750 12px ui-monospace,monospace}.arch-out strong{font-size:19px}.arch-out small{color:#a0b7aa;font-size:13px}.footnote{font-size:13px;color:#90a79b;max-width:1000px;margin-top:30px;line-height:1.65}
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@media(max-width:350px){.hero h1{font-size:46px}.case-mark{display:none}.arch-center{gap:3px}.arch-core{width:160px}.hero-network{height:300px}.network-node{padding:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}
/* Keep wide permissions table within its own scrollable surface on narrow screens. */
.policy-grid{grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr)}
.policy-main,.policy-side{min-width:0}
@media(max-width:1160px){.policy-grid{grid-template-columns:minmax(0,1fr)}}


/* Persistent chapter compass: navigation expresses the question answered by the visible section. */
:root{--sticky-header:129px}
html{scroll-padding-top:calc(var(--sticky-header) + 12px)}
.topbar-inner .header-spacer{flex:1;min-width:0}
.topbar-inner .nav-cta{margin-left:auto}
.chapter-bar{border-top:1px solid #ffffff12;border-bottom:1px solid #ffffff17;background:#0d191eea;backdrop-filter:blur(20px)}
.chapter-inner{min-height:67px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center}
.chapter-current{min-width:0;padding:8px 0;overflow:hidden}
.chapter-meta{display:flex;align-items:center;gap:9px;color:#a6c8b7;font:750 10px/1.3 ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.095em;white-space:nowrap}
.chapter-meta-dot{width:6px;height:6px;flex:none;transform:rotate(45deg);background:var(--lime)}
.chapter-meta #chapterCounter{color:var(--lime);font-weight:850;letter-spacing:.02em}
.chapter-question{margin:3px 0 0;color:#f4f9f4;line-height:1.2;font-size:clamp(15px,1.35vw,19px);font-weight:690;letter-spacing:-.03em;transition:opacity .17s ease,transform .17s ease;will-change:transform,opacity}
.chapter-question.is-swapping{opacity:0;transform:translateY(7px)}
.chapter-nav{display:flex;align-items:stretch;height:67px;gap:3px;margin-left:0!important}
.chapter-link{position:relative;min-width:73px;padding:14px 12px 12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;border-bottom:3px solid transparent;border-radius:3px 3px 0 0;color:#91a99e!important;background:transparent;transition:background .23s ease,color .23s ease,border-color .23s ease}
.chapter-link:hover{background:#e7ffbb0d;color:#f1ffd3!important}
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.chapter-link-no{font:800 11px/1.2 ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:.07em}
.chapter-link-label{font-size:11px;font-weight:700;white-space:nowrap;letter-spacing:-.015em}
.chapter-link.is-current .chapter-link-no{color:var(--lime)}
.chapter-link:focus-visible{outline-offset:-4px}
@media(max-width:1160px){.chapter-inner{gap:8px}.chapter-link{min-width:62px;padding-left:7px;padding-right:7px}.chapter-link-label{font-size:10px}.chapter-question{font-size:15px}}
@media(max-width:820px){.chapter-inner{grid-template-columns:minmax(0,1fr);gap:0;padding-top:6px}.chapter-current{padding:1px 0 6px}.chapter-question{font-size:15px}.chapter-nav{height:42px;display:grid!important;grid-template-columns:repeat(5,minmax(0,1fr));gap:4px;margin:0!important}.chapter-link{min-width:0;padding:4px 2px 5px;gap:1px}.chapter-link-no{font-size:10px}.chapter-link-label{font-size:10px}}
@media(max-width:420px){.chapter-inner{padding-top:6px}.chapter-meta{font-size:9px}.chapter-question{font-size:13px;letter-spacing:-.02em}.chapter-link-label{font-size:9px}.chapter-link-no{font-size:10px}.chapter-nav{height:40px}.chapter-link{padding-left:0;padding-right:0}}
@media(prefers-reduced-motion:reduce){.chapter-question,.chapter-link{transition:none!important}.chapter-question.is-swapping{opacity:1;transform:none}}

/* On the narrowest viewports the full question remains visible; numbered
   chapter tabs take over rather than forcing 8 px labels into six columns. */
@media(max-width:350px){.chapter-link-label{display:none}.chapter-link-no{font-size:12px}.chapter-nav{height:34px}.chapter-link{padding:7px 0}.chapter-question{font-size:14px}}

/* Five real content anchors; labels match visible section headings. */
.chapter-link{min-width:0}
.chapter-link-label{white-space:normal;text-align:center;line-height:1.15;max-width:126px}
@media(max-width:1160px){.chapter-link{padding-left:8px;padding-right:8px}.chapter-link-label{max-width:100px;font-size:10px}.chapter-inner{gap:12px}}
@media(max-width:820px){.chapter-nav{grid-template-columns:repeat(5,minmax(0,1fr))}.chapter-link-label{max-width:none;font-size:10px}}
@media(max-width:600px){.chapter-link-label{font-size:9px}}
@media(max-width:420px){.chapter-link-label{font-size:9px;letter-spacing:-.025em}}
@media(max-width:350px){.chapter-link-label{display:none}}