:root{color-scheme:light;--ink:#203832;--muted:#62746c;--line:#dce6df;--blue:#126c64;--wash:#edf6f1;--mono:ui-monospace,SFMono-Regular,Consolas,monospace}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:25px}body{margin:0;color:var(--ink);background-color:#f7f9f6;background-image:linear-gradient(#edf1ed 1px,transparent 1px),linear-gradient(90deg,#edf1ed 1px,transparent 1px);background-size:20px 20px;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.65}a{color:inherit;text-underline-offset:3px}button{font:inherit;cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible,video:focus-visible{outline:3px solid var(--blue);outline-offset:4px}.page{width:min(1280px,calc(100% - 48px));margin:20px auto 36px}.hero,.replay,.paper,footer{background:#fff;border:1px solid var(--line)}.hero,.replay,.paper{border-radius:14px}.hero{overflow:hidden}.masthead{background:#183c35;display:flex;align-items:center;justify-content:space-between;color:white;padding:9px 16px;min-height:44px;font:10px var(--mono);text-transform:uppercase;letter-spacing:.08em}.brand{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:800;text-decoration:none;letter-spacing:0}.hero-body{padding:26px 28px 25px;background:linear-gradient(110deg,#fff 43%,#edf6f1)}h1{font-size:clamp(30px,3.8vw,49px);line-height:1.08;letter-spacing:-1.9px;font-weight:850;margin:4px 0 16px;max-width:1160px}.subtitle{font-size:clamp(18px,1.7vw,22px);line-height:1.45;color:var(--muted);margin:0 0 25px}.byline{display:flex;flex-wrap:wrap;column-gap:22px;row-gap:5px;font-size:14px;font-weight:650}.byline a{text-decoration:none}.byline a:hover{text-decoration:underline}sup{font-size:9px}.hero-meta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:12px;margin-top:7px;color:var(--muted)}.hero-meta a{color:var(--ink);font-weight:650}.replay{margin:18px 0;padding:18px 21px 10px}.replay-head{display:flex;gap:16px;align-items:center;justify-content:space-between;margin-bottom:13px}.eyebrow{font:11px var(--mono);text-transform:uppercase;letter-spacing:.06em}.replay-head button,.pair-controls button{border-radius:7px;border:1px solid var(--line);background:#fff;padding:5px 11px;font:11px var(--mono);min-height:34px}.replay-head button:hover,.pair-controls button:hover{background:var(--ink);color:#fff}.replay-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:20px}.scene{display:flex;flex-direction:column;align-self:center}.frame-label{border-radius:6px;display:flex;justify-content:space-between;gap:10px;border:1px solid var(--line);padding:6px 8px;font:10px/1.4 var(--mono);text-transform:uppercase;margin-bottom:6px}.scene video{border:1px solid var(--line)}video{display:block;width:100%;border-radius:9px;background:#111;aspect-ratio:16/9;object-fit:contain}.scene-foot{display:flex;align-items:baseline;gap:12px;padding:10px 2px;font:11px var(--mono)}#phase-name{flex:1;font-family:inherit;color:var(--blue)}.architecture{align-self:center}.agent-node{border-radius:10px;border:1px solid var(--line);padding:11px 14px;transition:background .18s,border-color .18s,box-shadow .18s}.agent-node.active{background:var(--wash);border-color:var(--blue);box-shadow:inset 3px 0 var(--blue)}.node-label{display:flex;align-items:center;gap:10px}.node-label>span:first-child{font:10px var(--mono);color:var(--muted)}.node-label h2{font-size:17px;letter-spacing:0;margin:0}.node-message{font-size:12px;line-height:1.5;border-top:1px solid var(--line);padding-top:7px;min-height:26px}.handoff-arrow{display:flex;align-items:center;justify-content:center;gap:9px;color:var(--muted);font:9px var(--mono);text-transform:uppercase;padding:6px 0}.handoff-arrow>span:first-child{font-size:19px;line-height:1}.handoff-arrow.active{color:var(--blue)}.phase-nav{border-radius:8px;display:flex;gap:1px;margin-top:15px;background:var(--line);border:1px solid var(--line)}.phase-nav button{border-radius:6px;flex:1;min-width:0;background:#fff;border:0;font:10px var(--mono);padding:9px 4px;min-height:35px}.phase-nav button.active{color:#fff;background:var(--blue)}.media-note,.note{font-size:12px;color:var(--muted);line-height:1.6;margin:10px 0}.paper{display:grid;grid-template-columns:200px minmax(0,1fr);column-gap:36px;padding:28px 28px 45px}.rail{border-radius:9px;grid-column:1;grid-row:1 / span 10;position:sticky;top:24px;align-self:start;display:flex;flex-direction:column;gap:1px;border:1px solid var(--line)}.rail a{display:flex;align-items:baseline;gap:9px;padding:10px 11px;text-decoration:none;font-size:12px;line-height:1.45;border-bottom:1px solid var(--line)}.rail a:first-child{border-radius:8px 8px 0 0}.rail a:last-child{border-bottom:0;border-radius:0 0 8px 8px}.rail a span{font-family:var(--mono);color:var(--muted)}.rail a:hover,.rail a[aria-current]{background:var(--wash);color:var(--blue)}.opening,.section{grid-column:2;min-width:0}.opening{padding:0 0 25px}.lead{font-size:22px;font-weight:650;line-height:1.5;margin:0 0 15px}.opening p:last-child{margin-bottom:0}.section{margin-top:30px}.section-heading{display:flex;align-items:baseline;gap:15px;border-bottom:1px solid var(--line);padding-bottom:13px;margin-bottom:23px}.section-heading>span{font:21px var(--mono);color:var(--blue)}h2{font-size:25px;line-height:1.2;letter-spacing:-.6px;margin:0}.section-body>p{margin:16px 0}figure{margin:0}figcaption{font-size:13px;color:var(--muted);line-height:1.5;margin-top:9px}figcaption small{display:block;font-size:11px;margin-top:3px}h3{font-size:16px;line-height:1.4;margin:7px 0}details{border-radius:9px;border:1px solid var(--line);padding:12px 15px;margin:18px 0;font-size:14px}summary{cursor:pointer;font-weight:600}details p{color:var(--muted)}.pair{border-radius:10px;overflow:hidden;border:1px solid var(--line);margin:25px 0}.pair-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding:10px 13px;border-bottom:1px solid var(--ink)}.pair-head h3{margin:0}.pair-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line)}.pair-grid figure{background:#fff;padding:10px}.status{font:10px var(--mono);text-transform:uppercase;display:flex;justify-content:space-between;margin:0 0 7px}.status .failure{color:#b13b30}.status .success{color:#157747}.pair>p{padding:0 13px}.stats{border-radius:10px;overflow:hidden;display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--line);margin:23px 0}.stats>div{padding:17px;border-right:1px solid var(--line)}.stats>div:last-child{border:0}.stats strong{display:block;font-size:32px;line-height:1.3;letter-spacing:-1px}.stats span{font:11px var(--mono);color:var(--muted);text-transform:uppercase}.table-scroll{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:13px;white-space:nowrap}caption{text-align:left;font-size:14px;font-weight:650;margin:8px 0 12px}th,td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:right;font-variant-numeric:tabular-nums}th:first-child,td:first-child{text-align:left}thead th{font-size:11px;color:var(--muted);border-bottom:1px solid var(--ink)}tr.ours{background:var(--wash);font-weight:700}td.barcell{width:39%}.barcell span{border-radius:3px;display:block;height:7px;background:#b5bdc7;width:calc(var(--rate)*1%);margin-top:6px}.ours .barcell span{background:var(--blue)}.physical-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin:23px 0}.physical-grid video{aspect-ratio:1280/840}.physical-grid h3{margin:0 0 9px}.code-block{border-radius:10px;overflow:hidden;border:1px solid var(--line);background:#f5f8f6;margin:20px 0}.code-head{display:flex;justify-content:space-between;align-items:center;gap:12px;background:var(--ink);color:white;padding:8px 13px;font:11px var(--mono)}.copy{border:0;background:transparent;color:white;font:11px var(--mono);padding:5px;min-height:30px}pre{overflow-x:auto;margin:0;padding:18px;font:12px/1.85 var(--mono)}.text-link{color:var(--blue);font-weight:650}.resource-links{display:flex;flex-wrap:wrap;gap:12px 23px;margin:18px 0;font-size:14px}footer{border-radius:0 0 14px 14px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 20px;border-top:0;padding:17px 28px;font-size:11px}footer p{margin:0;color:var(--muted)}footer .brand{font-size:12px}.skip{position:absolute;top:-100px;left:20px;background:white;padding:12px;z-index:10}.skip:focus{top:20px}
@media(max-width:1000px){.paper{grid-template-columns:155px minmax(0,1fr);column-gap:24px;padding:23px}.rail a{font-size:11px;padding:9px}.replay-grid{grid-template-columns:1.25fr 1fr;gap:12px}.hero-body{padding:24px}.byline{column-gap:15px}.node-label h2{font-size:15px}.agent-node{padding:8px 10px}}
@media(max-width:760px){.page{width:calc(100% - 24px);margin:12px auto}.hero-body{padding:22px 18px}h1{letter-spacing:-1px}.byline{font-size:12px;column-gap:14px}.hero-meta{font-size:10px}.masthead{padding:8px 12px;font-size:8px}.replay{padding:14px}.replay-head{align-items:flex-start}.eyebrow{font-size:9px}.replay-grid{grid-template-columns:1fr}.frame-label{font-size:9px}.architecture{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;align-self:start}.agent-node{padding:9px 7px}.node-label{display:block}.node-label h2{font-size:13px;margin:3px 0}.node-message{font-size:10px}.handoff-arrow{display:none}.scene-foot{font-size:10px}.phase-nav{flex-wrap:wrap}.phase-nav button{flex:1 1 22%;font-size:9px}.paper{display:block;padding:18px}.rail{position:static;margin-bottom:28px;display:grid;grid-template-columns:1fr 1fr}.rail a{font-size:11px;min-height:43px}.rail a:last-child{grid-column:1/-1}.lead{font-size:20px}.opening{padding-bottom:5px}.section{margin-top:35px}h2{font-size:23px}.section-heading{gap:10px}.pair-grid,.physical-grid{grid-template-columns:1fr}.stats strong{font-size:25px}.stats>div{padding:12px}.stats span{font-size:9px}th,td{padding:9px}.pair-head{align-items:flex-start}.pair-head h3{font-size:14px}footer{padding:17px 18px;align-items:flex-start;flex-direction:column}pre{font-size:11px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.agent-node{transition:none}}

.replay-intro{margin:3px 0 0;font-size:17px;font-weight:600;line-height:1.4}.architecture{display:grid;grid-template-columns:minmax(0,1fr) 30px minmax(0,1fr) 30px minmax(0,1fr);gap:0;align-items:stretch;margin-bottom:0}.agent-node{padding:10px 13px}.node-message{font-size:11px;min-height:37px;margin-top:5px}.handoff-arrow{font-size:21px;padding:0}.handoff-arrow>span:first-child{font-size:25px}.flow-label{color:var(--blue);font:11px/1.5 var(--mono);margin:8px 0 15px}.replay-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:17px;align-items:start}.scene{align-self:start}.frame-label{min-height:29px;align-items:center}.visual-evidence{min-width:0}.visual-evidence a{display:block;text-decoration:none}.evidence-frame{position:relative;aspect-ratio:16/9;border-radius:9px;border:1px solid var(--line);background:#f5f8f6;overflow:hidden}.evidence-frame img{display:block;width:100%;height:100%;object-fit:contain}.visual-evidence figcaption{margin:10px 0 0;font-size:13px;line-height:1.5;color:var(--ink)}.visual-evidence figcaption strong{font-weight:650;display:block}.visual-evidence figcaption>span{display:block;font-size:11px;color:var(--muted);margin-top:4px}.phase-nav{flex-wrap:wrap}.phase-nav button{min-height:39px;font-size:10px}.handoff-story{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px;margin:25px 0}.handoff-story>button{border-radius:10px;overflow:hidden;min-width:0;border:1px solid var(--line);background:#fff;padding:0;text-align:left;color:inherit}.handoff-story>button:hover{border-color:var(--blue);background:var(--wash)}.handoff-story img{display:block;width:100%;aspect-ratio:16/9;object-fit:contain;background:#f8fafc}.story-number{display:block;margin:12px 12px 0;color:var(--blue);font:10px var(--mono);text-transform:uppercase}.handoff-story h3{margin:6px 12px;font-size:14px}.handoff-story p{font-size:12px;line-height:1.5;margin:0 12px 13px;color:var(--muted)}.learning-aside{font-size:13px;margin-top:27px}.learning-aside summary{font-size:14px}.learning-aside .pair{margin-bottom:5px}
@media(max-width:1000px){.architecture{grid-template-columns:minmax(0,1fr) 22px minmax(0,1fr) 22px minmax(0,1fr)}.node-message{font-size:10px}.replay-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}}
@media(max-width:760px){.replay-intro{font-size:14px;max-width:240px}.architecture{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.agent-node{padding:7px}.node-label h2{font-size:12px}.node-label>span:first-child{font-size:9px}.node-message{min-height:45px;font-size:9px;line-height:1.4}.flow-label{font-size:9px;margin-bottom:12px}.replay-grid{grid-template-columns:1fr;gap:14px}.evidence-frame{aspect-ratio:16/9}.visual-evidence figcaption{font-size:12px}.phase-nav button{flex:1 1 17%;padding:8px 4px;min-height:40px}.handoff-story{grid-template-columns:1fr}.handoff-story h3{font-size:16px}.handoff-story p{font-size:13px}.rail a:last-child{grid-column:auto}.replay-head button{font-size:10px}.frame-label{font-size:8px;min-height:28px}.scene-foot{padding-bottom:0}}


.handoff-arrow.active>span{animation:handoff-pulse 1.3s ease-in-out infinite}@keyframes handoff-pulse{0%,100%{opacity:.4}50%{opacity:1}}@media(max-width:760px){.architecture{position:sticky;top:8px;background:white;z-index:2;padding:4px 0}.handoff-arrow{display:none}}@media(prefers-reduced-motion:reduce){.handoff-arrow.active>span{animation:none}}

.architecture{position:sticky;top:8px;background:white;z-index:2;padding:5px 0}

.phase-nav{margin:0 0 14px}@media(max-width:760px){.phase-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;margin-bottom:12px}.phase-nav button{font-size:9px;min-height:36px;padding:8px 3px}}
.case-nav{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 9px}.case-nav button,.view-handoff{border-radius:7px;border:1px solid var(--line);background:#fff;padding:8px 12px;font:11px var(--mono);color:var(--ink);min-height:37px}.case-nav button.active{border-color:var(--blue);color:var(--blue);background:var(--wash)}.case-goal{font-size:15px;line-height:1.5;margin:10px 0 14px}.capture-label{font:10px/1.5 var(--mono);color:var(--muted);margin:5px 0 0}.candidate-nav{display:flex;gap:6px;margin-top:7px}.candidate-nav:empty{display:none}.candidate-nav button{border-radius:7px;overflow:hidden;flex:1;min-width:0;border:1px solid var(--line);background:white;padding:3px;text-align:center}.candidate-nav img{display:block;width:100%;aspect-ratio:16/9;object-fit:contain}.candidate-nav span{display:block;font:9px/1.5 var(--mono);margin:3px 0}.candidate-nav .recorded-selection{border:2px solid var(--blue);background:var(--wash)}.original-link{display:inline-block!important;font-size:11px;margin-top:8px;color:var(--blue)}.view-handoff{margin:0 0 9px;color:var(--blue);cursor:pointer}.case-nav button:hover,.view-handoff:hover{background:var(--wash)}
@media(max-width:760px){.case-nav button{flex:1;font-size:9px;padding:7px 4px}.case-goal{font-size:12px}.candidate-nav span{font-size:8px}.capture-label{font-size:9px}.replay-intro{max-width:230px}}

.node-kind{color:var(--blue);font:10px/1.5 var(--mono);margin:6px 0}.node-message{font-size:14px;line-height:1.45;min-height:42px;margin-top:0;color:var(--ink)}[data-node="main"] .node-message{font-weight:650}.recorded-language{font-size:12px;margin:14px 0 0;padding:9px 12px}.recorded-direction{color:var(--blue);font:11px var(--mono);margin:16px 0 7px}.recorded-language blockquote{border-left:2px solid var(--line);margin:0 0 15px;padding:0 12px;color:var(--muted);line-height:1.6}
@media(max-width:760px){.node-kind{font-size:8px;line-height:1.4;min-height:23px}.node-message{font-size:10px;min-height:58px}.recorded-language{font-size:11px}}

.explainer{border-radius:14px;background:#fff;border:1px solid var(--line);margin:18px 0;padding:18px 21px}.explainer h2{margin-bottom:15px}.explainer video{border:1px solid var(--line)}.explainer-links{display:flex;flex-wrap:wrap;gap:9px 23px;margin-top:12px;font-size:12px;color:var(--blue)}@media(max-width:760px){.explainer{padding:14px}.explainer h2{font-size:22px}.explainer-links{font-size:11px}}

.node-label{flex-wrap:wrap}.node-role{margin-left:auto;color:var(--blue);font:9px/1.4 var(--mono);letter-spacing:.05em}@media(max-width:760px){.node-role{display:block;margin:4px 0 0;font-size:9px}}
