@font-face{font-family:Plex;src:url(plex-sans-400.ttf);font-weight:400;font-display:swap}@font-face{font-family:Plex;src:url(plex-sans-500.ttf);font-weight:500;font-display:swap}@font-face{font-family:Plex;src:url(plex-sans-600.ttf);font-weight:600;font-display:swap}@font-face{font-family:PlexMono;src:url(plex-mono.ttf);font-weight:400;font-display:swap}
:root{--ground:#f7f6f2;--surface:#fff;--raised:#f5f5f1;--ink:#171916;--muted:#62645b;--rule:#e8e8e0;--control:#c8c9c0;--active:#9f8700;--signal:#fff9d9;--positive:#216340;--negative:#a72828;--focus:#9b8000;--hover:#ecece5;--radius:6px;--gap:8px;--page:clamp(16px,3vw,48px)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--ground);color:var(--ink);font:400 16px/1.6 Plex,Arial,sans-serif;font-variant-numeric:tabular-nums}::selection{background:var(--signal);color:var(--ink)}input,textarea{caret-color:var(--focus)}*{scrollbar-color:var(--control) var(--ground)}a{color:inherit;text-underline-offset:.22em;text-decoration-thickness:1px}a:hover{text-decoration-color:var(--active)}button,input,select,textarea{font:inherit;color:inherit}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.45;cursor:default}:focus-visible{outline:3px solid var(--focus);outline-offset:3px}h1,h2,h3,p{margin-top:0}h1,h2,h3{text-wrap:balance}h1{font-size:clamp(32px,4vw,52px);line-height:1.13;letter-spacing:-.025em;font-weight:600;margin-bottom:28px}h2{font-size:28px;line-height:1.25;letter-spacing:-.02em;font-weight:600;margin-bottom:20px}h3{font-size:18px;font-weight:600;line-height:1.35;margin-bottom:8px}p{margin-bottom:20px;max-width:74ch}strong{font-weight:600}.lead{font-size:20px;line-height:1.6;max-width:66ch}.small{font-size:13px;color:var(--muted)}.mono,code,pre{font-family:PlexMono,monospace}.mono,code{font-size:14px}pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px;background:var(--raised);padding:20px}code{overflow-wrap:anywhere}header{padding:20px var(--page);display:flex;align-items:center;gap:36px;border-bottom:1px solid var(--rule)}.wordmark{font-size:29px;line-height:1.1;font-weight:600;letter-spacing:-.025em;text-decoration:none;white-space:nowrap}.wordmark span{font-weight:400;font-size:14px;letter-spacing:0;display:block;margin-top:4px;color:var(--muted)}nav{display:flex;gap:4px;flex:1;flex-wrap:wrap}nav a,.source-link{padding:10px 12px;text-decoration:none;font-size:14px;min-height:44px;display:inline-flex;align-items:center}nav a:hover,nav a[aria-current=page]{background:var(--hover);border-radius:var(--radius)}nav a[aria-current=page]{font-weight:600}.source-link{white-space:nowrap}.skip{position:absolute;z-index:10;top:-90px;left:16px;background:var(--ink);color:var(--surface);padding:12px}.skip:focus{top:8px}main{max-width:1600px;margin:0 auto;padding:var(--gap) var(--page) 72px}.board{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}.board>*{min-width:0}.name-cell{grid-column:span 8;background:var(--surface);padding:44px 40px}.scope-cell{grid-column:span 4;padding:36px 32px;background:var(--raised)}.scope-cell h2{font-size:20px}.scope-cell p{font-size:16px}.rail{grid-column:span 12;display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap)}.rail a{background:var(--surface);text-decoration:none;min-height:64px;padding:18px 24px;font-size:16px;font-weight:500;display:flex;align-items:center}.rail a:hover{background:var(--signal)}.mechanism-cell{grid-column:span 8;background:var(--surface);padding:28px}.rfc-cell{grid-column:span 4;background:var(--signal);padding:32px}.rfc-cell h2{font-size:24px}.rfc-cell>a:last-child{display:block;margin-top:24px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:11px 18px;border:1px solid var(--ink);border-radius:var(--radius);background:var(--ink);color:var(--surface);font-weight:500;text-decoration:none;font-size:16px}.button:hover{background:#3b3d35}.button.secondary{background:var(--surface);color:var(--ink);border-color:var(--control)}.button.secondary:hover{background:var(--hover)}.trace-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.trace-heading h2{font-size:24px;margin-bottom:0}.trace>p{margin-top:16px}.badge{display:inline-block;font-size:13px;background:var(--raised);color:var(--muted);padding:4px 8px;border-radius:4px;white-space:nowrap}.badge.pass{color:var(--positive);background:#e9f3ec}.badge.warn{color:#735400;background:#fff6d8}.badge.fail{color:var(--negative);background:#fff0ec}.trace svg{width:100%;display:block;margin:28px 0 12px}.trace svg rect{fill:var(--surface);stroke:var(--control);stroke-width:1.5}.trace svg text{fill:var(--ink);font:16px Plex,Arial,sans-serif}.trace svg text.node-title{font-size:20px;font-weight:600}.trace svg text.id{font:12px PlexMono,monospace;fill:var(--muted)}.trace svg .edge{stroke:var(--active);stroke-width:2;fill:none;color:var(--active)}.trace-mobile{display:none}.trace-controls{display:flex;gap:6px;flex-wrap:wrap}.trace-controls button{border:1px solid var(--control);border-radius:var(--radius);background:var(--surface);padding:10px 12px;min-height:44px;font-size:14px}.trace-controls button:hover{background:var(--hover)}.trace-controls button[aria-pressed=true]{background:var(--signal);border-color:var(--focus)}#trace-detail{padding-top:24px;min-height:145px}#trace-detail p{margin-bottom:12px}.section{margin-top:8px;padding:48px 40px;background:var(--surface);scroll-margin-top:24px}.section-intro{display:grid;grid-template-columns:minmax(210px,1fr) 2fr;gap:40px;margin-bottom:28px}.section-intro p{margin:0}.experiment-rows>a{display:grid;grid-template-columns:1.2fr 1.5fr auto;align-items:center;gap:24px;text-decoration:none;border-top:1px solid var(--rule);padding:24px 0}.experiment-rows>a:hover strong{text-decoration:underline;text-underline-offset:.22em}.experiment-rows>a>span:not(.badge){color:var(--muted)}.record{display:grid;grid-template-columns:140px 1fr auto 20px;gap:24px;padding:24px 0;border-top:1px solid var(--rule);align-items:center;text-decoration:none}.record:hover strong{text-decoration:underline;text-underline-offset:.22em}.record .mono{color:var(--muted)}.page-title{padding:56px 40px 40px;background:var(--surface);margin-bottom:8px}.page-title h1{max-width:27ch}.page-title .lead{margin-bottom:0}.page-title+.trace{background:var(--surface);padding:40px}.prose{background:var(--surface);padding:44px 40px 28px;margin:8px 0}.prose>p,.measure{max-width:74ch}.stages{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin:32px 0 0;padding:0;list-style:none}.stages li{min-width:0}.stages h3{margin-bottom:16px}.facts{display:flex;gap:48px;flex-wrap:wrap;margin:28px 0}.facts>div{display:flex;flex-direction:column;gap:8px}.facts strong{font-size:28px;font-weight:500}.facts span{font-size:14px;color:var(--muted)}.result-panel{padding:24px;background:var(--raised);margin-top:24px}.result-panel table{border-collapse:collapse;width:100%;font-size:14px}.result-panel th,.result-panel td{text-align:left;padding:14px 12px;border-bottom:1px solid var(--control)}.result-panel th:first-child,.result-panel td:first-child{padding-left:0}.result-panel .scroll-table{overflow-x:auto}#llm-transcript details{border-bottom:1px solid var(--rule);padding:12px 0}summary{cursor:pointer;min-height:44px;display:list-item;padding:10px 0;font-weight:500}.publication{display:block;background:var(--surface);padding:36px 40px;margin-top:8px;text-decoration:none}.publication:hover{background:var(--raised)}.publication p{color:var(--muted);margin-bottom:12px}.publication span{text-decoration:underline;text-underline-offset:.22em}.join-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:8px}.join-grid>section,.join-grid>aside{background:var(--surface);padding:40px}.join-grid>aside{background:var(--raised)}form{display:grid;gap:10px;max-width:650px}label{margin-top:12px;font-weight:500}input,select,textarea{width:100%;padding:12px;border:1px solid var(--control);border-radius:var(--radius);background:var(--surface)}textarea{resize:vertical}input::placeholder,textarea::placeholder{color:var(--muted)}form .button{justify-self:start;margin-top:16px}.join-steps{padding-left:22px}.join-steps li{margin-bottom:20px}.rfc-prose{background:var(--surface);padding:32px 40px 48px}.rfc-prose h2{margin-top:40px}.rfc-prose>p{max-width:74ch}.rfc-prose+p{padding:24px 40px;background:var(--surface);margin:8px 0 0}footer{border-top:1px solid var(--rule);padding:40px var(--page);display:grid;grid-template-columns:1fr 2fr;gap:20px 40px}footer p{margin:0}footer>div{display:flex;gap:24px;flex-wrap:wrap}footer .small{max-width:82ch}main> .record{background:var(--surface);padding-left:40px;padding-right:40px}.note{padding:20px;background:var(--signal)}
@media(max-width:1050px){header{gap:16px;flex-wrap:wrap}nav{order:3;flex-basis:100%}.source-link{margin-left:auto}.name-cell{padding:32px}.scope-cell{padding:28px}.rfc-cell{padding:28px}.rail a{padding:16px}.section,.prose,.page-title,.rfc-prose{padding-left:28px;padding-right:28px}.stages{grid-template-columns:1fr 1fr}.join-grid{grid-template-columns:1fr 1fr}.join-grid>section,.join-grid>aside{padding:28px}.section-intro{grid-template-columns:1fr 1.5fr;gap:24px}}
@media(max-width:700px){body{font-size:16px}h1{font-size:32px}h2{font-size:24px}.lead{font-size:18px}header{padding:16px;gap:12px}nav{flex-wrap:nowrap;overflow-x:auto;margin:0 -16px;padding:0 16px;gap:0}nav a{white-space:nowrap;font-size:14px}main{padding:8px 8px 40px}.name-cell,.scope-cell,.mechanism-cell,.rfc-cell{grid-column:span 12;padding:24px 20px}.name-cell h1{max-width:14ch}.scope-cell{background:var(--raised)}.scope-cell p{margin-bottom:12px}.rail{grid-template-columns:1fr 1fr}.rail a{font-size:14px;min-height:64px;padding:14px 16px}.trace-heading h2{font-size:22px}.trace svg{margin:20px 0 14px;min-height:140px}.trace svg text.id{display:none}.trace-controls{display:grid;grid-template-columns:1fr 1fr}.trace-controls button{padding:10px 6px}.trace-controls+div{min-height:170px}.section,.prose,.page-title,.rfc-prose,.page-title+.trace{padding:32px 20px}.section-intro{display:block;margin-bottom:24px}.section-intro p{margin-top:20px}.experiment-rows>a{grid-template-columns:1fr auto;gap:8px 16px;padding:20px 0}.experiment-rows>a>span:not(.badge){grid-row:2;grid-column:1/-1;font-size:14px}.experiment-rows>a .badge{font-size:12px}.record,main>.record{grid-template-columns:1fr auto;gap:8px 12px;padding:20px}.record .mono{grid-column:1}.record strong{grid-row:2;grid-column:1/-1}.record .badge{grid-row:1;grid-column:2}.record>span:last-child{display:none}.stages{grid-template-columns:1fr;gap:12px}.facts{gap:24px}.facts strong{font-size:24px}.join-grid{grid-template-columns:1fr}.join-grid>section,.join-grid>aside{padding:24px 20px}.publication{padding:28px 20px}.rfc-prose+p{padding:24px 20px}.rfc-prose h2{font-size:24px}footer{grid-template-columns:1fr;padding:32px 20px;gap:24px}.result-panel{padding:16px;margin-left:-8px;margin-right:-8px}.result-panel table{font-size:13px;min-width:560px}.result-panel th,.result-panel td{padding:12px 10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}

@media(max-width:700px){.trace svg{display:none}.trace-mobile{display:block;margin:24px 0}.trace-mobile>div{border:1px solid var(--control);border-radius:8px;padding:16px}.trace-mobile strong,.trace-mobile span{display:block}.trace-mobile span{font-size:14px;color:var(--muted);margin-top:4px}.trace-mobile>p{font-size:14px;color:var(--muted);margin:8px 0 8px 16px}}
.measurement{margin:36px 0;background:var(--surface)}.measurement img{display:block;width:100%;height:auto}.measurement figcaption{font-size:13px;color:var(--muted);padding-top:8px}.hypotheses details{border-top:1px solid var(--rule)}.hypotheses summary{padding:18px 0}.hypotheses details p{padding-bottom:12px}table caption{text-align:left;font-size:14px;font-weight:500;margin-bottom:16px}
.scroll-hint{display:none;font-size:13px;color:var(--muted)}@media(max-width:850px){.scroll-hint{display:block}.measurement picture{display:block}.measurement img{height:auto}}
@media(min-width:701px) and (max-width:1050px){.mechanism-cell,.rfc-cell{grid-column:span 12}}