@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Libre+Caslon+Display&display=swap');
:root{--paper:#f7f6f1;--ink:#203c39;--muted:#63736b;--line:#d9dfd5;--green:#24564b;--lime:#d9e6a9;--blue:#248fba}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.6 'DM Sans',Arial,sans-serif}button,select{font:inherit}button,a,select,input{touch-action:manipulation}button{cursor:pointer;border:1px solid var(--line);background:transparent;color:var(--ink);padding:9px 14px;border-radius:5px}button:hover{background:#e7ecdf}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid var(--blue);outline-offset:3px}a{color:inherit}header{max-width:1440px;margin:auto;padding:28px 5%;display:flex;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{text-decoration:none;letter-spacing:2px;font-size:12px;font-weight:700}.brand span:last-child{color:#8a998d;margin-left:15px}.drop{font-size:24px;vertical-align:middle;margin-right:12px}nav{display:flex;gap:30px;font-size:12px}nav a{text-decoration:none}main{max-width:1440px;margin:auto;padding:0 5%}.intro{padding:65px 0 50px;display:grid;grid-template-columns:1.1fr 1fr;gap:8%;align-items:center}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2px;margin:0 0 20px;color:var(--muted)}h1,h2{font-family:'Libre Caslon Display',Georgia,serif;font-weight:400;letter-spacing:-2px;line-height:1.03}h1{font-size:76px;margin:0 0 22px}h1 em{font-weight:400;color:#62816c}h2{font-size:46px;margin:0}h3{font-size:15px;margin:0 0 10px}.lead{max-width:480px;color:var(--muted);font-size:16px;margin-bottom:30px}.primary{background:var(--green);color:white;text-decoration:none;display:inline-flex;align-items:center;gap:30px;padding:13px 20px;border-radius:5px;border:0}.primary:hover{background:#326c5f}.hero-photo{margin:0;height:390px;position:relative;overflow:hidden;border-radius:4px}.hero-photo img{width:100%;height:100%;object-fit:cover;object-position:center 58%}.hero-photo figcaption{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,#102c29bb);color:#fff;padding:35px 22px 14px;font-size:12px}.photo-pin{position:absolute;top:50%;left:49%;background:var(--lime);border:6px solid #d9e6a94d;border-radius:40px;font-size:12px;padding:7px}.photo-pin span{position:absolute;left:42px;top:3px;background:var(--paper);white-space:nowrap;padding:5px 10px;border-radius:3px;color:var(--ink)}.finding{display:grid;grid-template-columns:160px 1fr 190px;gap:24px;background:#e8eddf;border-top:1px solid #c9d1bf;padding:26px}.finding p{margin:0;font-size:14px}.finding .eyebrow{margin-top:5px}.confidence{font-size:11px;border-left:1px solid #c8d1bf;padding-left:24px;color:var(--muted)}.confidence b{color:var(--green)}.section{padding:70px 0 0}.section-title{display:flex;justify-content:space-between;align-items:end;margin-bottom:28px;gap:25px}.section-title .eyebrow{margin-bottom:12px}.section-title>p{font-size:12px;color:var(--muted);margin:0}.lab{display:grid;grid-template-columns:300px 1fr;border:1px solid var(--line);border-radius:7px;overflow:hidden;background:#fff}.lab aside{padding:23px 18px;border-right:1px solid var(--line)}.rank-head{font-size:9px;letter-spacing:1px;display:flex;justify-content:space-between;margin-bottom:14px}.scenario{border:0;border-bottom:1px solid var(--line);border-radius:0;width:100%;text-align:left;padding:16px 10px;display:grid;grid-template-columns:26px 1fr 45px;gap:8px;align-items:center;line-height:1.35}.scenario .num{font-size:10px;color:#89988c}.scenario .weight{font-size:21px;font-family:Georgia,serif}.scenario .name{font-size:12px;font-weight:600}.scenario.active{background:var(--green);color:#fff;border-radius:4px}.scenario.active .num{color:var(--lime)}.fine{font-size:11px;color:var(--muted);line-height:1.6}.lab aside .fine{margin:20px 8px 0}.view-tabs{display:flex;gap:4px;padding:12px;border-bottom:1px solid var(--line);flex-wrap:wrap}.view-tabs button{font-size:11px;border:0;padding:8px 12px}.view-tabs button.selected{background:#e9eedf}.right{margin-left:auto}#viewport{height:430px;position:relative;background:#eaf0e9;overflow:hidden}canvas{display:block;width:100%;height:100%}#view-label{position:absolute;z-index:1;top:16px;left:20px;font-size:9px;letter-spacing:1.4px;color:#64786b}.hint{position:absolute;bottom:14px;left:20px;font-size:10px;color:#617468}#loading{position:absolute;left:20px;top:50%;font-size:12px}#labels{position:absolute;inset:0;pointer-events:none}.label3d{position:absolute;font-size:10px;line-height:1.3;white-space:nowrap;background:#ffffffeb;border:1px solid #ccd8ce;border-radius:3px;padding:5px 8px;transform:translate(-50%,-100%);box-shadow:0 2px 8px #203c3910}.label3d.water{background:#d8eff8;color:#136284;border-color:#8fc2d5}.controls{padding:13px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}.controls button,.controls label,.controls select{font-size:11px}.controls .primary{padding:9px 14px;gap:0}.controls label{display:flex;align-items:center;gap:5px}select{border:1px solid var(--line);background:white;padding:5px;max-width:155px}.check{margin-left:auto}.progress{height:3px;background:#e6ece3}#progress{height:100%;background:#3a91b2;width:0}#stage{font-size:12px;padding:12px 18px;background:#f2f5ec}#viewNote{padding:0 18px 8px}.explanation{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:30px;padding:30px 0;border-bottom:1px solid var(--line)}.explanation h3{font-family:Georgia,serif;font-size:23px;font-weight:400;line-height:1.25}.explanation h4{font-size:10px;letter-spacing:1.5px;margin:0 0 10px}.explanation p{font-size:13px;margin:0;color:var(--muted)}.tag{font-size:10px;color:#537255;display:inline-block;background:#e6edda;padding:3px 8px;margin-bottom:10px}.callout{display:grid;grid-template-columns:190px 1fr;gap:30px;padding:24px 0}.callout b{font-size:14px}.callout p{font-size:13px;color:var(--muted);margin:0}.evidence-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.evidence-card{margin:0}.evidence-card button{border:0;padding:0;overflow:hidden;width:100%;height:235px}.evidence-card img{width:100%;height:100%;object-fit:cover;transition:transform .3s}.evidence-card button:hover img{transform:scale(1.04)}.evidence-card figcaption{font-size:12px;margin-top:10px}.evidence-card figcaption span{display:block;color:var(--muted);font-size:11px;margin-top:5px}.evidence-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:35px;padding:25px 0;border-bottom:1px solid var(--line)}.evidence-notes p{font-size:12px;color:var(--muted)}details{margin:24px 0;font-size:12px}summary{cursor:pointer}.all-photos{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;padding-top:15px}.all-photos button{padding:0}.all-photos img{width:100%;height:150px;object-fit:cover}.next{display:grid;grid-template-columns:1fr 1.2fr;gap:90px}.next>div>p:not(.eyebrow){font-size:14px;color:var(--muted);max-width:400px;margin:25px 0}.next ol{margin:0;list-style:none;padding:0;counter-reset:step}.next li{position:relative;padding:0 0 24px 48px;counter-increment:step}.next li:before{content:'0'counter(step);position:absolute;left:0;top:0;font-family:Georgia,serif;color:#78916e;font-size:22px}.next li b{display:block;font-size:14px}.next li span{display:block;font-size:12px;color:var(--muted);margin-top:6px}.safety{font-size:11px;border:1px solid #dbd9c7;background:#efeee2;padding:15px 22px;margin:30px 0 45px}footer{border-top:1px solid var(--line);padding:26px 0 35px;display:flex;justify-content:space-between;gap:35px;font-size:11px}footer p{margin:5px 0;color:var(--muted)}.sources a{display:block;margin:3px 0}dialog{border:0;border-radius:6px;padding:16px;background:var(--paper);max-width:90vw;max-height:94vh}dialog::backdrop{background:#102c29d9}dialog img{display:block;max-height:78vh;max-width:82vw;object-fit:contain}dialog p{font-size:12px;max-width:650px}#closePhoto{position:absolute;right:22px;top:22px;background:#fff;z-index:1}@media(max-width:1000px){h1{font-size:58px}.lab{grid-template-columns:250px 1fr}.finding{grid-template-columns:1fr 3fr}.confidence{display:none}.controls .check{margin-left:0}.evidence-card button{height:200px}.next{gap:40px}}@media(max-width:720px){header{padding:20px 5%}nav{gap:15px}nav a:first-child{display:none}.intro{padding:35px 0;gap:25px;grid-template-columns:1fr}h1{font-size:58px}.hero-photo{height:280px}.finding{grid-template-columns:1fr;gap:5px;padding:20px}.section{padding-top:45px}.section-title{display:block}h2{font-size:39px}.section-title>p{margin-top:14px}.lab{grid-template-columns:1fr}.lab aside{padding:15px;border-right:0}#scenarios{display:grid;grid-template-columns:1fr 1fr;gap:5px}.scenario{padding:12px 7px;grid-template-columns:17px 1fr 38px}.scenario .weight{font-size:18px}.scenario .name{font-size:10px}.lab aside .fine{margin:12px 0 0}#viewport{height:370px}.explanation{grid-template-columns:1fr;gap:22px}.callout{grid-template-columns:1fr;gap:10px}.evidence-grid{grid-template-columns:1fr 1fr}.evidence-card button{height:210px}.evidence-notes{grid-template-columns:1fr;gap:10px}.next{grid-template-columns:1fr;gap:30px}.all-photos{grid-template-columns:repeat(3,1fr)}footer{display:block}.sources{margin-top:20px}}@media print{header,nav,.controls,.view-tabs,.hint,dialog,#print{display:none}body{font-size:11px}main{padding:0}.section{padding-top:25px}.intro{padding:15px 0}.hero-photo{height:200px}h1{font-size:40px}.lab{display:block}.lab aside{border:0}#scenarios{display:grid;grid-template-columns:repeat(3,1fr)}#viewport{height:350px}.section,.explanation,.finding{break-inside:avoid}a{color:inherit}footer{font-size:9px}}

[hidden]{display:none!important}

.calibration{background:#f5f6ef;padding:12px 18px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;font-size:11px;align-items:center}.calibration label{display:flex;align-items:center;gap:7px}.calibration p{width:100%;margin:0;color:var(--muted);font-size:10px}.calibration input{width:90px}.measurement-grid{display:grid;grid-template-columns:1fr 1fr;gap:45px}.annotated{margin:0}.annotated svg{max-height:600px;width:100%;display:block;background:#e2e5da}.annotated figcaption{font-size:11px;color:var(--muted);margin-top:10px}.metric{border-bottom:1px solid var(--line);padding:14px 0}.metric span{display:block;font-size:11px;color:var(--muted)}.metric b{font:32px Georgia,serif}.metric p{font-size:12px;margin:7px 0;color:var(--muted)}@media(max-width:720px){.measurement-grid{grid-template-columns:1fr;gap:20px}}

/* The investigation can be watched without manipulating a 3D camera. */
.viewer-col{min-width:0;background:#fff}.camera-presets{display:flex;align-items:center;gap:5px;padding:10px 12px;flex-wrap:wrap;background:#f5f7f0;border-bottom:1px solid var(--line)}.camera-presets>span{font-size:9px;letter-spacing:1px;margin-right:6px}.camera-presets button,.view-tabs button,.controls button{min-height:42px;font-size:12px}.camera-presets button{padding:8px 10px;background:#fff}.camera-presets #expandViewer{margin-left:auto}.controls{padding-bottom:6px}.controls .primary{min-width:180px;justify-content:center}.controls .voice-toggle{font-size:12px;min-height:42px;margin-left:auto}.voice-toggle input{width:18px;height:18px}.voice-note{font-size:11px;line-height:1.45;color:var(--muted);margin:3px 15px 12px}.advanced-view{margin:0;border-top:1px solid var(--line)}.advanced-view summary{padding:13px 16px;font-size:12px;min-height:44px}.advanced-view .calibration{border:0}.calibration .check{margin-left:0}.calibration select{min-height:36px}.calibration input[type=checkbox]{width:18px;height:18px}#stage{font-size:13px;line-height:1.65;min-height:88px}#view-label{max-width:calc(100% - 40px);line-height:1.5;background:#eaf0e9db}.hint{background:#eaf0e9df;padding:3px 5px;left:14px}.viewer-col.expanded{position:fixed;inset:12px;z-index:1000;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:8px;box-shadow:0 0 0 30px #18352ee6;overflow:auto}.viewer-col.expanded #viewport{flex:1 0 280px;min-height:280px;height:auto}.viewer-col.expanded #viewNote{margin:6px 18px 10px;padding:0}.viewer-col.expanded #stage{min-height:65px}.viewer-expanded{overflow:hidden}.viewer-col.expanded .advanced-view[open]{max-height:180px;overflow:auto}.camera-presets button:focus-visible,.voice-toggle input:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
@media(max-width:720px){.camera-presets{gap:5px;padding:8px}.camera-presets>span{display:none}.camera-presets button{flex:1 1 28%;font-size:11px}.camera-presets #expandViewer{margin-left:0}.view-tabs{padding:6px;gap:2px}.view-tabs button{padding:7px 8px;font-size:10px}.controls{gap:5px;padding:9px}.controls .primary{min-width:150px;flex:1}.controls .voice-toggle{margin-left:0}#stage{font-size:12px;min-height:110px}.viewer-col.expanded{inset:0;border-radius:0}.viewer-col.expanded #viewport{flex-basis:230px;min-height:230px}.viewer-col.expanded .view-tabs{display:none}.viewer-col.expanded #viewNote{display:none}.viewer-col.expanded #stage{min-height:100px}.viewer-col.expanded .voice-note{margin-bottom:6px;font-size:10px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}
@media print{.camera-presets,.advanced-view,.voice-note{display:none}.viewer-col.expanded{position:static;box-shadow:none}}