:root{color-scheme:light;--paper:#f4f3ee;--white:#fffefa;--ink:#263635;--muted:#697773;--line:#d9ddd5;--blue:#276879;--gold:#b77b37;--green:#427761;--radius:14px;--sans:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--mono:ui-monospace,SFMono-Regular,Consolas,monospace}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.5 var(--sans)}button,input,select{font:inherit}button{cursor:pointer}button,select{color:inherit}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,canvas:focus-visible{outline:3px solid var(--blue);outline-offset:4px}a{color:inherit}.masthead,main,footer{max-width:1500px;margin:auto}.masthead{height:90px;display:flex;align-items:center;gap:28px;padding:0 48px;border-bottom:1px solid var(--line)}.brand{display:flex;gap:11px;align-items:center;text-decoration:none;font-size:17px;letter-spacing:.17em;font-weight:720}.brand svg{width:30px;fill:none;stroke:var(--ink);stroke-width:1.8;stroke-linejoin:round}.masthead-note{font-size:13px;color:var(--muted);border-left:1px solid var(--line);padding-left:26px}.status{display:flex;align-items:center;gap:8px;margin-left:auto;font:11px var(--mono);color:var(--muted)}.status>span{width:6px;height:6px;border-radius:50%;background:#b18c45}main{padding:38px 48px 0}.intro{display:flex;justify-content:space-between;gap:24px;align-items:flex-end;margin-bottom:27px}.eyebrow{font:10px/1.5 var(--mono);letter-spacing:.13em;margin:0 0 9px;color:var(--muted)}h1{font-size:clamp(26px,2.5vw,38px);line-height:1.18;font-weight:540;letter-spacing:-.045em;margin:0}.intro>p{font-size:13px;line-height:1.7;color:var(--muted);margin:0 0 2px}.explorer{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white);box-shadow:0 12px 35px #26363506}.explorer-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:0 22px}.tabs{display:flex;gap:27px}.tabs button{padding:20px 0 18px;background:none;border:0;border-bottom:2px solid transparent;color:#80908a;font:10px var(--mono)}.tabs button span{font:13px var(--sans);margin-left:7px}.tabs button[aria-selected=true]{color:var(--ink);border-bottom-color:var(--ink)}.tabs button:hover{color:var(--ink)}.geometry-note{font:10px var(--mono);color:var(--muted)}.geometry-note i{font-style:normal;padding:0 9px}.model-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;min-width:0}.viewport{height:510px;position:relative;overflow:hidden;background:radial-gradient(ellipse at 50% 55%,#fcfcf7,#eef0e9);min-width:0}.viewport-top{position:absolute;left:24px;right:24px;top:21px;display:flex;align-items:center;justify-content:space-between;pointer-events:none;gap:12px;z-index:1}.view-label{font:9px var(--mono);letter-spacing:.1em;color:#6b7d75}.model-note{font:10px var(--sans);padding:5px 9px;border:1px solid #c9d2c7;border-radius:20px;color:#65756d;background:#f7f8f0b0}canvas{display:none;width:100%;height:100%;touch-action:none;cursor:grab}.js-ready canvas{display:block}canvas:active{cursor:grabbing}.fallback{padding:30px;color:var(--muted);text-align:center}.fallback svg{width:100%;max-height:365px}.js-ready .fallback{display:none}.camera-controls{position:absolute;left:20px;bottom:20px;display:flex;gap:3px;background:#fffefae6;padding:4px;border:1px solid var(--line);border-radius:9px}.camera-controls button{border:0;background:none;border-radius:5px;padding:6px 10px;font-size:11px;color:var(--muted)}.camera-controls button[aria-pressed=true]{background:#e1e8e0;color:var(--ink)}.camera-controls button:hover{background:#ecf0e7}.orbit-hint{position:absolute;bottom:28px;right:23px;font:9px var(--mono);color:#718076;pointer-events:none}.orbit-hint span{padding:0 6px}.inspector{border-left:1px solid var(--line);padding:26px 23px;display:flex;flex-direction:column;min-width:0;background:#fffefa}.inspector-heading{display:flex;justify-content:space-between;gap:10px}.inspector-heading .eyebrow{font-size:9px}.step-count{font:9px var(--mono);color:var(--muted)}.inspector h2{font-weight:550;font-size:23px;line-height:1.25;letter-spacing:-.035em;margin:13px 0 12px;min-height:56px}.inspector>p{margin:0;font-size:12px;line-height:1.75;color:var(--muted);min-height:68px}.stage-list{display:flex;flex-direction:column;margin:21px 0 12px;gap:3px}.stage-list button{border:0;background:none;border-radius:6px;display:flex;align-items:center;gap:11px;padding:7px 8px;text-align:left;color:#89958d;font-size:11px}.stage-list button span{font:9px var(--mono);color:#97a198}.stage-list button[aria-current=step]{color:var(--ink);background:#eef1e9}.stage-list button[aria-current=step] span{color:var(--green)}.stage-list button:hover{background:#f3f4ee;color:var(--ink)}.display-options{display:flex;flex-direction:column;gap:9px;margin-top:auto;padding-top:16px}.display-options label{display:flex;align-items:center;gap:8px;font-size:11px;color:#5c7066;cursor:pointer}.display-options input{accent-color:var(--blue);width:13px;height:13px;margin:0}.legend{border-top:1px solid var(--line);margin-top:20px;padding-top:15px;display:grid;grid-template-columns:1fr 1fr;gap:9px 4px;font-size:9px;color:var(--muted)}.legend>span{display:flex;align-items:center;gap:6px}.swatch{width:7px;height:7px;border-radius:2px}.swatch.shell{background:#9fa8a1}.swatch.spine{background:var(--blue)}.swatch.cable{background:#bc8b3b}.swatch.lock{background:var(--green)}.playback{display:flex;align-items:center;gap:24px;padding:19px 25px 13px;border-top:1px solid var(--line)}.play-button{min-width:110px;display:flex;align-items:center;justify-content:center;gap:10px;border:1px solid var(--ink);border-radius:7px;padding:12px 14px;font-size:12px;background:var(--ink);color:var(--white)}.play-button:hover{background:#3a5047}.play-button>span:first-child{width:12px;font-size:13px}.timeline{flex:1;min-width:0}.timeline>label{font:10px var(--mono);color:var(--muted);display:block;margin-bottom:1px}.timeline input{display:block;width:100%;height:18px;accent-color:var(--green);cursor:pointer;margin:0}.timeline-ends{display:flex;justify-content:space-between;font:9px var(--mono);color:#89968d;margin-top:2px}.speed{display:flex;flex-direction:column;gap:4px;color:var(--muted);font-size:9px}.speed select{border:1px solid var(--line);border-radius:5px;background:var(--white);padding:6px 5px;font-size:11px}.model-disclaimer{margin:0;padding:0 25px 16px 159px;font-size:10px;line-height:1.6;color:#7a867e}.reading-key{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;padding:31px 0}.reading-key article{display:flex;gap:14px}.key-number{font:11px var(--mono);color:#8b9b8d;padding-top:2px}.reading-key h2{font-size:12px;font-weight:600;margin:0 0 5px}.reading-key p{font-size:11px;color:var(--muted);margin:0;max-width:290px}footer{padding:20px 48px 28px;display:flex;justify-content:space-between;gap:20px;font:9px var(--mono);color:#8b968d}footer i{font-style:normal;color:#b4bcb1;margin:0 9px}.detail-options{display:flex;flex-direction:column;gap:7px;margin:23px 0 17px}.detail-options[hidden]{display:none}.detail-options button{border:1px solid var(--line);background:none;border-radius:6px;padding:9px 10px;text-align:left;font-size:11px}.detail-options button[aria-pressed=true]{background:#eaf0e7;border-color:#bccbbb;color:var(--ink)}.detail-options button:hover{border-color:#9bada0}.skip-link{position:fixed;top:8px;left:8px;transform:translateY(-160%);padding:9px 15px;background:white;z-index:10}.skip-link:focus{transform:none}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}[hidden]{display:none!important}
.js-ready .viewport{height:auto;min-height:510px}.js-ready canvas{position:absolute;inset:0}.play-button:disabled{opacity:.42;cursor:default}
@media(min-width:1500px){.js-ready .viewport{min-height:560px}}
@media(max-width:1050px){.masthead{padding:0 28px}main{padding:29px 28px 0}.intro>p{display:none}.model-layout{grid-template-columns:minmax(0,1fr) 250px}.inspector{padding:22px 19px}.viewport{height:500px}.geometry-note{display:none}.orbit-hint{display:none}.inspector h2{font-size:21px}footer{padding-left:28px;padding-right:28px}}
@media(max-width:720px){.masthead{height:68px;padding:0 19px}.brand{font-size:14px;gap:8px}.brand svg{width:25px}.masthead-note{display:none}.status{font-size:9px;gap:6px}main{padding:25px 14px 0}.intro{padding:0 5px;margin-bottom:21px}.eyebrow{font-size:9px}h1{font-size:27px;max-width:310px}.explorer-top{padding:0 15px}.tabs{width:100%;justify-content:space-between;gap:10px}.tabs button{padding:17px 0 14px;font-size:9px}.tabs button span{font-size:12px;margin-left:4px}.model-layout{display:flex;flex-direction:column}.viewport{height:365px}.viewport-top{left:16px;right:16px;top:16px}.view-label{font-size:8px}.model-note{font-size:9px;padding:4px 7px}.camera-controls{left:12px;bottom:12px}.camera-controls button{padding:5px 8px}.inspector{border-left:0;border-top:1px solid var(--line);padding:17px 18px 16px;display:block}.inspector h2{font-size:20px;min-height:0;margin:9px 0 6px}.inspector>p{min-height:0;font-size:12px;max-width:550px}.stage-list{flex-direction:row;margin:14px 0 0;gap:5px;justify-content:space-between}.stage-list button{padding:6px 7px;font-size:0;flex:1;justify-content:center;border:1px solid var(--line)}.stage-list button span{font-size:10px}.stage-list button[aria-current=step]{border-color:#94ac99}.display-options{flex-direction:row;flex-wrap:wrap;gap:11px 17px;padding-top:15px}.display-options label{font-size:10px}.legend{display:flex;flex-wrap:wrap;gap:9px 14px;margin-top:14px;padding-top:12px;font-size:9px}.playback{gap:13px;padding:15px 14px 10px}.play-button{min-width:82px;padding:10px 9px;gap:7px;font-size:11px}.speed{font-size:8px}.speed select{font-size:10px;padding:5px 2px}.timeline>label{font-size:8px}.timeline-ends{font-size:8px}.model-disclaimer{padding:0 14px 14px;font-size:9px}.reading-key{grid-template-columns:1fr;gap:18px;padding:25px 6px}.reading-key article{gap:13px}.reading-key p{max-width:100%}footer{padding:8px 20px 23px;font-size:8px;flex-wrap:wrap;gap:8px}.detail-options{flex-direction:row;flex-wrap:wrap;gap:6px;margin:13px 0 0}.detail-options button{font-size:10px;padding:7px 9px}.inspector-heading .eyebrow{margin-bottom:0}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
@media(max-width:1050px){.js-ready .viewport{min-height:500px}}
@media(max-width:720px){.js-ready .viewport{height:365px;min-height:365px;flex-shrink:0}}

/* The design guide shares the explorer's paper, ink and diagram palette. */
html{scroll-behavior:smooth;scroll-padding-top:24px}.main-nav{display:flex;gap:25px;margin-left:35px;font-size:12px;color:var(--muted)}.main-nav a{text-decoration:none;padding:12px 0}.main-nav a:hover{color:var(--ink)}
.intro{align-items:center;margin:8px 0 30px}.intro h1{font-size:clamp(35px,3.8vw,55px);line-height:1.05;letter-spacing:-.055em}.intro-copy{max-width:350px}.intro-copy>p{font-size:15px;line-height:1.7;color:var(--muted);margin:0 0 14px}.text-link{display:inline-flex;align-items:center;gap:20px;font-size:12px;color:var(--blue);text-decoration:none;font-weight:570;padding:6px 0}.text-link span{font-size:17px}.text-link:hover{text-decoration:underline;text-underline-offset:4px}
.dimensions{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);margin:0 0 30px;padding:20px 0 0;gap:25px}.dimensions>div{border-left:1px solid var(--line);padding-left:24px}.dimensions>div:first-child{border:0;padding-left:0}.dimensions dt{font:9px var(--mono);color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:6px}.dimensions dd{margin:0;font-size:27px;line-height:1.2;letter-spacing:-.04em}.dimensions dd span{font-size:12px;letter-spacing:0;color:var(--muted);margin-left:4px}
.js-ready .viewport{min-height:620px}.tabs{gap:25px}.inspector{padding:24px 21px}.inspector h2{font-size:22px}.inspector>p{min-height:85px;font-size:11px}.stage-list{margin:14px 0 10px}.stage-list button{padding:5px 8px}.legend{margin-top:16px;padding-top:13px}.swatch.floor{background:#9db69b}.display-options{padding-top:12px}.reading-key{padding:28px 0 40px}.reading-key h2{font-size:13px}.reading-key p{font-size:12px;line-height:1.65}.model-disclaimer{padding-bottom:15px}
.chapter{padding:62px 0;border-top:1px solid var(--line);scroll-margin-top:20px}.chapter-heading{display:grid;grid-template-columns:1.15fr 1fr;align-items:end;gap:70px;margin-bottom:28px}.chapter-heading h2{font-size:clamp(25px,2.4vw,34px);font-weight:530;line-height:1.18;letter-spacing:-.04em;margin:0}.chapter-heading>p{font-size:13px;line-height:1.8;color:var(--muted);margin:0;max-width:430px}.layout-grid,.drive-layout{display:grid;grid-template-columns:1fr 1.05fr;gap:22px}.drawing{margin:0;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.drawing svg{display:block;width:100%;height:auto}.drawing text,.plan-svg text,.layer-svg text{font:12px var(--mono);fill:#546e62}.drawing .drawing-large{font:29px var(--sans);fill:var(--ink);letter-spacing:-1px}.drawing .drawing-small,.plan-svg .drawing-small,.layer-svg .drawing-small{font:9px var(--mono);letter-spacing:.04em}.dimension-line{stroke:#9eafa0;stroke-width:1;fill:none}.cross-section svg{height:360px;margin:10px 0}.drawing figcaption{border-top:1px solid var(--line);padding:17px 23px}.drawing figcaption>span{font:9px var(--mono);letter-spacing:.07em;color:var(--muted)}.drawing figcaption p{font-size:12px;line-height:1.7;color:var(--muted);margin:6px 0 0;max-width:680px}.floor-plan-card{background:#e9ede2;border:1px solid #d2dacb;border-radius:var(--radius);padding:25px 28px;display:flex;flex-direction:column}.plan-heading{display:flex;justify-content:space-between;gap:10px;align-items:center}.plan-heading .eyebrow{margin:0}.plan-heading>span{font-size:10px;color:var(--muted)}.plan-svg{width:100%;height:auto;margin:14px 0 8px}.floor-strip-key{display:flex;gap:18px;font-size:9px;color:var(--muted)}.floor-strip-key span{display:flex;align-items:center;gap:6px}.floor-strip-key i{width:8px;height:8px;background:#cfddc7}.floor-strip-key span:nth-child(2) i{background:#edf1e6;border:1px solid #b4c4ae}.floor-strip-key span:nth-child(3) i{background:var(--blue)}.floor-equation{display:grid;grid-template-columns:1fr .9fr 1fr;gap:6px;margin-top:28px;text-align:center;font:15px var(--mono);color:#6e8b73}.floor-equation span,.floor-equation b{border-top:3px solid #b4c6ac;padding-top:10px;font-weight:400}.floor-equation b{border-color:#6f8b73;color:var(--ink)}.floor-equation-caption{display:grid;grid-template-columns:1fr .9fr 1fr;text-align:center;font-size:9px;color:var(--muted);margin:5px 0 14px}.card-copy{font-size:12px;line-height:1.8;color:var(--muted);margin:8px 0 12px}.card-copy strong{font-weight:600;color:var(--ink)}.floor-plan-card .text-link{margin-top:auto;align-self:flex-start}
.drive-layout{grid-template-columns:1.1fr 1fr;align-items:center}.drive-drawing svg{max-height:330px;padding:18px}.drive-explanation{padding:10px 15px 10px 30px}.function-row{display:flex;gap:17px;margin-bottom:23px}.function-icon{width:36px;height:36px;flex-shrink:0;display:grid;place-items:center;font-size:27px;border:1px solid #dbc6a6;border-radius:9px;color:#a77a3d;background:#f0eadb}.function-icon.clamp{color:var(--blue);border-color:#b6cbd0;background:#e3eceb}.function-icon.hold{color:var(--green);border-color:#b8cbb7;background:#e3ecde}.function-row h3{font-weight:550;font-size:14px;margin:0 0 5px}.function-row p{font-size:12px;line-height:1.75;color:var(--muted);margin:0;max-width:360px}.wide-detail{margin-top:23px;border:1px solid var(--line);border-radius:9px;background:#eeefe6}.wide-detail summary{padding:16px 20px;font-size:13px;cursor:pointer}.wide-detail>div{padding:0 20px 12px;display:grid;grid-template-columns:1fr 1fr;gap:28px}.wide-detail p{font-size:12px;line-height:1.8;color:var(--muted);margin:0 0 6px}
.wall-layout{display:grid;grid-template-columns:1.12fr 1fr;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white)}.layer-list{display:flex;flex-direction:column;border-right:1px solid var(--line)}.layer-list button{background:none;border:0;border-bottom:1px solid var(--line);padding:19px 23px;display:flex;align-items:center;gap:15px;text-align:left;min-height:80px}.layer-list button:last-child{border-bottom:0}.layer-list button[aria-pressed=true]{background:#eaf0e5;box-shadow:inset 3px 0 var(--green)}.layer-list button:hover{background:#f0f2e9}.layer-list strong{display:block;font-size:13px;font-weight:550}.layer-list small{display:block;font-size:10px;color:var(--muted);margin-top:4px;line-height:1.6}.layer-number{font:10px var(--mono);color:#8d9a8c}.layer-swatch{width:10px;height:32px;flex-shrink:0;margin-left:auto;border-radius:3px}.layer-swatch.optical{background:#b29e72}.layer-swatch.gap{background:#d9e5e2;border:1px dashed #99b6ae}.layer-swatch.pressure{background:#bd8f73}.layer-swatch.ribs{background:#9bb4a4}.layer-swatch.shield{background:#72878a}.layer-swatch.cabin{background:#c7c4b1}.wall-detail{background:#eef0e7;padding:22px 28px;display:flex;flex-direction:column}.layer-svg{width:100%;max-height:235px;display:block;margin:0 auto 16px}.layer-svg [data-slice]{opacity:.55}.layer-svg [data-slice].selected{opacity:1;filter:drop-shadow(0 4px 3px #28453d38)}.layer-svg .selected>path:first-child{stroke:#486556;stroke-width:2}.layer-copy h3{font-size:21px;letter-spacing:-.025em;font-weight:550;margin:6px 0 10px}.layer-copy>p:last-child{font-size:12px;line-height:1.8;color:var(--muted);margin:0}.small-note{font-size:10px;line-height:1.8;color:var(--muted);border-top:1px solid #d3dbcc;margin:20px 0 0;padding-top:14px}.wall-detail .small-note{margin-top:auto;padding-top:16px}
.structure-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.structure-card{background:var(--white);border:1px solid var(--line);padding:25px;border-radius:var(--radius);display:flex;flex-direction:column}.card-index{font:9px var(--mono);letter-spacing:.08em;color:var(--muted)}.structure-card h3{font-size:21px;line-height:1.3;letter-spacing:-.025em;font-weight:530;margin:24px 0 13px;max-width:240px}.structure-card p{font-size:12px;line-height:1.85;color:var(--muted);margin:0 0 21px}.structure-card .text-link{margin-top:auto;font-size:11px;gap:12px}.load-path{margin-top:20px;display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;padding:17px 23px;border:1px dashed #bdcdbd;border-radius:9px;font:10px var(--mono);color:#617d69}.load-path b{font-size:18px;font-weight:400;color:#9bae9c}.enclosure-drawing svg{max-height:280px;padding:12px 22px}.enclosure-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:35px;padding:23px 8px 0}.enclosure-notes p{font-size:12px;line-height:1.8;color:var(--muted);margin:0}.enclosure-notes strong{display:block;font-size:13px;color:var(--ink);font-weight:550;margin-bottom:6px}
.build-steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:0;margin:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white)}.build-steps li{padding:25px;border-left:1px solid var(--line)}.build-steps li:first-child{border-left:0}.build-symbol{display:block;width:44px;height:44px;margin:2px 0 30px;font-size:39px;line-height:1;color:#789780}.build-steps .eyebrow{display:block;font-size:9px}.build-steps h3{font-size:16px;line-height:1.4;letter-spacing:-.02em;font-weight:550;margin:12px 0 10px}.build-steps p{font-size:12px;line-height:1.8;color:var(--muted);margin:0}.status-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin:7px 0 26px}.status-label{font:9px var(--mono);border-radius:20px;padding:6px 10px;display:inline-block}.status-label.selected{background:#e0e9db;color:#53734f}.status-label.proposed{background:#dfe9e8;color:#477579}.status-label.open{background:#eee5d4;color:#8d7546}.status-grid p{font-size:12px;line-height:1.85;color:var(--muted);max-width:345px}.questions{border-top:1px solid var(--line)}.questions details{border-bottom:1px solid var(--line)}.questions summary{padding:18px 2px;cursor:pointer;font-size:13px}.questions p{font-size:12px;line-height:1.9;color:var(--muted);max-width:790px;margin:0 20px 20px}.closing-link{display:flex;justify-content:space-between;align-items:center;padding-top:32px;font-size:14px;color:var(--muted)}footer{border-top:1px solid var(--line);padding-top:23px}
html:not(.js-ready) .tabs,html:not(.js-ready) .playback,html:not(.js-ready) .display-options,html:not(.js-ready) .camera-controls{display:none}
@media(min-width:1500px){.js-ready .viewport{min-height:650px}}
@media(max-width:1050px){.main-nav{margin-left:0;gap:20px}.intro-copy{max-width:300px}.intro-copy>p{font-size:13px}.chapter-heading{gap:32px}.layer-list button{padding:17px;gap:11px}.wall-detail{padding:21px}.structure-card{padding:21px}.build-steps li{padding:21px}.tabs{gap:22px}.tabs button span{font-size:12px}.js-ready .viewport{min-height:650px}.dimensions dd{font-size:26px}.load-path{justify-content:center;font-size:9px}.floor-plan-card{padding:23px}.floor-strip-key{gap:12px}.drive-explanation{padding-left:12px}}
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