:root{font-family:Inter,"Helvetica Neue",Arial,sans-serif;color:#202b2c;background:#fff;font-synthesis:none;text-rendering:optimizeLegibility;--ink:#202b2c;--muted:#657173;--line:#dbe3e1;--teal:#287c79;--accent:#78c9c3;letter-spacing:0}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0}button,select,input{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}video{display:block;width:100%;height:100%;object-fit:contain}h1,h2,h3,h4,p,figure{margin:0}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,.wrist-window:focus-visible{outline:2px solid #33a9a1;outline-offset:4px}svg{width:18px;height:18px;stroke-width:1.7;flex-shrink:0}sub{line-height:0}
.wrap{width:min(1240px,calc(100% - 88px));margin:auto}.site-header{height:62px;position:absolute;z-index:30;top:0;width:100%;color:#f1f7f7;border-bottom:1px solid #ffffff18;background:#0a0f11aa}.header-inner{height:100%;width:min(1390px,calc(100% - 72px));display:flex;align-items:center;gap:32px;margin:auto}.wordmark{font-size:17px;font-weight:650;display:flex;align-items:center;gap:8px}.wordmark-dot{width:5px;height:5px;border-radius:50%;background:var(--accent)}.site-header nav{margin:auto;display:flex;gap:36px}.site-header nav a,.header-code{font-size:13px;font-weight:500}.header-code{display:flex;align-items:center;gap:8px}
.hero{position:relative;height:900px;max-height:calc(100svh - 42px);min-height:660px;background:#0b1012;overflow:hidden;color:#fff}.hero-background{position:absolute;inset:0;pointer-events:none}.ambient{position:absolute;inset:0;object-fit:cover;opacity:0;transition:opacity 2s}.ambient.active{opacity:.17}.hero-background:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#080c10c9 0%,#0b101248 42%,#090d12b8 100%)}.hero-copy{position:absolute;top:106px;left:24px;right:24px;text-align:center;z-index:3;pointer-events:none}.eyebrow{font-size:12px;font-weight:650;margin-bottom:16px;color:var(--teal)}.hero .eyebrow{color:#b9cdcd;font-weight:450}.hero h1{font-size:78px;line-height:1.03;font-weight:640}.hero-subtitle{font-size:24px;line-height:1.35;color:#dee7e9;margin-top:12px;font-weight:350}.robot-stage{position:absolute;inset:264px 0 90px;touch-action:pan-y}.robot-stage canvas{display:block;width:100%;height:100%;cursor:grab;position:relative;z-index:2}.scene-poster{height:100%;width:100%;object-fit:contain;position:absolute;inset:0;opacity:1}.scene-status{position:absolute;bottom:18px;left:0;right:0;text-align:center;font-size:12px;color:#b8cbce;z-index:4}.agent-labels{position:absolute;inset:0;pointer-events:none;z-index:5}.agent-label{position:absolute;font-size:10px;color:#c0d4d3;opacity:.8;transform:translate(-50%,-50%);white-space:nowrap;transition:color .15s}.agent-label.selected{color:#fff;opacity:1}.scene-controls{position:absolute;bottom:72px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:22px;z-index:7;color:#d5e5e5}.agent-selector{display:flex;gap:3px}.agent-selector button{border:1px solid #ffffff25;background:#0c1b2240;border-radius:50%;width:29px;height:29px;font-size:10px}.agent-selector button[aria-pressed=true]{background:#84d3cd;color:#092325;border-color:#84d3cd}#scene-phase{font-size:12px;min-width:125px}.scene-tools{display:flex;gap:4px}.icon-button{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;background:transparent;border:0;border-radius:50%;padding:0;flex-shrink:0}.icon-button:hover{background:#91a5a518}.hero-bottom{position:absolute;bottom:25px;left:44px;right:44px;display:flex;justify-content:space-between;align-items:center;font-size:12px;color:#c5d5d5;z-index:7}.hero-bottom a{display:flex;align-items:center;gap:12px}
.section{padding:76px 0}.overview{padding-bottom:45px}.overview h2{font-size:44px;font-weight:560;line-height:1.14}.lead{max-width:900px;font-size:18px;line-height:1.75;color:var(--muted);margin:24px 0 36px}.chapter{scroll-margin-top:0}.chapter+.chapter{border-top:1px solid var(--line)}.chapter-nav{position:sticky;top:0;z-index:20;background:#fff;border-block:1px solid var(--line)}.chapter-nav .wrap{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.chapter-nav a{min-height:65px;display:flex;align-items:center;gap:12px;border-bottom:2px solid transparent;font-size:14px;line-height:1.35}.chapter-nav a>span{color:var(--teal);font-size:12px}.chapter-nav a>svg{width:15px;margin-left:auto}.chapter-nav a[aria-current]{color:var(--teal);border-bottom-color:var(--teal)}.chapter-nav a:hover{color:var(--teal)}
.section-heading{display:flex;justify-content:space-between;gap:65px;align-items:flex-end;margin-bottom:34px}.section-heading h2{font-size:42px;line-height:1.13;font-weight:570}.section-heading>p{font-size:16px;color:var(--muted);line-height:1.7;max-width:405px;padding-bottom:3px}.figure-zoom{display:block;width:100%;background:white;padding:0;border:0;position:relative}.figure-zoom img{width:100%;height:auto}.figure-zoom>span{position:absolute;bottom:12px;right:12px;background:#eff4f3e8;border-radius:50%;padding:10px;display:flex}.figure-zoom:hover>span{background:#d5eae5}figcaption{font-size:12px;color:var(--muted);line-height:1.65;margin-top:16px}.study-figure{max-width:1080px;margin:auto}.figure-heading{display:flex;justify-content:space-between;align-items:baseline;gap:24px;margin:38px 0 22px}.figure-heading h3{font-size:23px;line-height:1.3;font-weight:560}.figure-heading>p{font-size:13px;line-height:1.5;color:var(--muted)}.findings{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px;margin-top:35px}.findings>div{border-top:2px solid #95bbb4;padding-top:20px}.findings>div:nth-child(2){border-color:#91a7c3}.findings>div:nth-child(3){border-color:#bd9b84}.findings span{font-size:12px;color:var(--teal);font-weight:600}.findings h3{font-size:18px;line-height:1.45;margin:10px 0;font-weight:580}.findings p{font-size:15px;line-height:1.7;color:var(--muted)}.roles{margin-bottom:45px}
.transfer{background:#f6f8f7}.evidence-block{margin-top:48px}.table-scroll{overflow-x:auto;overscroll-behavior-x:contain}.table-scroll table{width:100%;border-collapse:collapse;font-size:15px;text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}.table-scroll caption{text-align:left;font-size:13px;color:var(--muted);margin-bottom:16px;line-height:1.6}.table-scroll th:first-child{text-align:left;font-weight:550}.table-scroll thead th{font-size:12px;font-weight:500;color:var(--muted);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:15px 14px}.table-scroll td,.table-scroll tbody th{padding:15px 14px;border-bottom:1px solid var(--line)}.featured{background:#e6f0ec}.featured td{color:#1a6965;font-weight:650}.family-start th,.family-start td{border-top:2px solid #b8c9c6}.diagnostic-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:30px}.diagnostic-grid table{font-size:14px}.diagnostic-grid td,.diagnostic-grid tbody th{padding:14px 9px}.diagnostic-grid thead th{padding:14px 9px}.media-note{font-size:12px;color:#728082;line-height:1.7;margin-top:18px;max-width:1060px}.media-note a{text-decoration:underline;text-underline-offset:3px}.result-reading{font-size:16px;color:var(--muted);line-height:1.75;margin-top:24px;max-width:990px}.compact-results{margin-top:30px}.subsection{margin-top:46px;scroll-margin-top:90px}.subsection+.subsection{border-top:1px solid var(--line);padding-top:14px;margin-top:50px}
.simulation-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.sim-video{aspect-ratio:4/3;position:relative;background:#edf1ef;border-radius:5px;overflow:hidden}.sim-item header{margin-top:16px}.task-label{font-size:12px;color:var(--teal);font-weight:600;display:block;margin-bottom:6px}.sim-item h4{font-size:15px;line-height:1.4;font-weight:580;min-height:42px}.sim-item p{font-size:13px;line-height:1.5;color:var(--muted);margin-top:4px}.video-start{border:0;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);height:42px;width:42px;border-radius:50%;background:#173d3ce0;color:#fff;display:grid;place-items:center;box-shadow:0 1px 8px #0002}.video-start:hover{background:#287c79}.video-start svg{height:20px;width:20px}
.physical-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:34px 30px}.physical-item{min-width:0;padding-top:19px;border-top:1px solid var(--line)}.physical-item header{margin-bottom:12px}.physical-item h4{font-size:18px;line-height:1.4;font-weight:570}.view-headings{display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:center;font-size:12px;color:var(--muted);margin-bottom:7px;min-height:30px}.view-headings>div{display:flex;align-items:center;justify-content:space-between;gap:5px}.view-headings b{font-weight:400;font-size:11px;margin-left:4px;font-variant-numeric:tabular-nums}.carousel-tools{display:flex;gap:0}.carousel-tools .icon-button{width:27px;height:27px}.camera-pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}.global-view{position:relative;aspect-ratio:10/7;background:#e6e8e6;border-radius:5px;overflow:hidden}.wrist-window{overflow:hidden;position:relative;background:#f3f6f5;mask-image:linear-gradient(90deg,transparent,#000 10%,#000 90%,transparent);touch-action:pan-y;min-width:0}.wrist-track{position:absolute;height:100%;display:flex;align-items:center;gap:9px;width:100%;transition:transform .22s ease}.wrist-slide{flex:0 0 68%;position:relative;opacity:.5;aspect-ratio:10/7;border:0;padding:0;overflow:hidden;border-radius:4px}.wrist-slide.current{opacity:1}.wrist-slide video,.wrist-slide img{width:100%;height:100%;object-fit:contain;background:#e6e8e6}.task-description{font-size:13px;line-height:1.5;color:var(--muted);margin-top:10px}
.code{text-align:center;background:#101718;color:#f1f5f4;padding-block:85px}.code .eyebrow{color:#8bbcb6}.code h2{font-size:40px;line-height:1.15;font-weight:550}.code p:not(.eyebrow){color:#a2b2b0;font-size:16px;margin:22px auto 0;max-width:700px;line-height:1.65}.pill-link{display:inline-flex;gap:25px;align-items:center;background:#c4ebe5;color:#15322f;padding:14px 22px;border-radius:6px;font-size:14px;font-weight:550;margin-top:28px}.code-resources{display:flex;gap:40px;justify-content:center;margin-top:36px;color:#a5bbb8;font-size:14px}.code-resources a{display:flex;gap:8px;align-items:center}footer{background:#101718;color:#7d9190;border-top:1px solid #243233;padding:26px 0}footer .wrap{display:flex;align-items:center;gap:30px;justify-content:space-between}footer .wordmark{font-size:14px;color:#bccac9}footer span{font-size:12px}.noscript{padding:25px;background:#fff}dialog{width:min(1500px,96vw);height:90vh;padding:40px 20px 20px;border:0;border-radius:7px}dialog::backdrop{background:#081112cc}dialog img{height:100%;width:100%;object-fit:contain}#figure-close{position:absolute;right:6px;top:4px;background:#fff}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
@media(min-width:1600px){.robot-stage{inset:285px 0 85px}}
@media(max-width:1050px){.wrap{width:calc(100% - 48px)}.section-heading{gap:30px}.section-heading h2{font-size:35px}.section-heading>p{font-size:15px;max-width:350px}.hero h1{font-size:66px}.section{padding:64px 0}.findings{gap:24px}.chapter-nav .wrap{gap:15px}.chapter-nav a{font-size:13px}.diagnostic-grid{grid-template-columns:1fr}.physical-grid{gap:28px 22px}.simulation-grid{gap:14px}.view-headings{gap:8px}.view-headings>div>span{font-size:11px}.view-headings b{font-size:10px;margin-left:2px}.camera-pair{gap:8px}.carousel-tools .icon-button{width:23px}}
@media(max-width:760px){html{scroll-padding-top:82px}.header-inner{width:calc(100% - 32px);gap:15px}.site-header{height:54px}.wordmark{font-size:15px}.site-header nav{gap:15px;margin-left:auto;margin-right:0}.site-header nav a{font-size:12px}.site-header nav a:nth-child(2){display:none}.header-code{font-size:12px;gap:2px}.header-code svg{width:14px}.hero{height:730px;min-height:620px;max-height:calc(100svh - 34px)}.hero-copy{top:100px;left:15px;right:15px}.hero .eyebrow{font-size:11px}.hero h1{font-size:48px}.hero-subtitle{font-size:18px;max-width:260px;margin:12px auto 0}.robot-stage{inset:250px -10px 125px}.scene-controls{gap:10px;bottom:97px;width:max-content}.agent-selector button{width:26px;height:26px}#scene-phase{font-size:10px;min-width:103px}.scene-tools .icon-button{width:27px}.hero-bottom{left:20px;right:20px;bottom:22px;gap:15px;font-size:11px}.hero-bottom>span{max-width:130px;line-height:1.5}.hero-bottom a{gap:6px}.wrap{width:calc(100% - 36px)}.section{padding:52px 0}.overview h2,.section-heading h2{font-size:32px}.lead{font-size:16px;line-height:1.7}.section-heading{display:block;margin-bottom:28px}.section-heading>p{max-width:100%;margin-top:20px}.eyebrow{font-size:12px;margin-bottom:14px}.chapter-nav .wrap{gap:12px}.chapter-nav a{display:block;font-size:12px;padding:11px 0;min-height:75px}.chapter-nav a>span{display:block;margin-bottom:4px}.chapter-nav a>svg{display:none}.figure-heading{display:block;margin:28px 0 20px}.figure-heading h3{font-size:21px}.figure-heading>p{margin-top:8px}.findings{grid-template-columns:1fr;gap:24px;margin-top:28px}.findings>div{padding-top:15px}.findings h3{font-size:18px}.figure-zoom>span{padding:7px;bottom:7px;right:7px}.figure-zoom svg{width:16px;height:16px}.table-scroll table{font-size:13px}.table-scroll thead th{font-size:12px;padding:13px 10px}.table-scroll td,.table-scroll tbody th{padding:13px 10px}.result-reading{font-size:15px}.simulation-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 16px}.sim-item h4{font-size:15px;min-height:42px}.sim-item p{font-size:12px}.physical-grid{grid-template-columns:1fr;gap:28px}.physical-item h4{font-size:18px}.view-headings{font-size:12px}.view-headings>div>span{font-size:12px}.camera-pair{gap:12px}.carousel-tools .icon-button{width:28px}.code h2{font-size:30px}.code p:not(.eyebrow){font-size:15px}.code-resources{gap:20px;font-size:12px}footer .wrap{gap:20px}footer span{max-width:165px;line-height:1.5;font-size:11px}.agent-label{font-size:8px}}
@media(max-width:360px){.header-code{display:none}.hero h1{font-size:43px}.scene-controls{gap:7px}.scene-tools{gap:0}.agent-selector button{width:24px}.chapter-nav a{font-size:11px}.view-headings b{font-size:10px}.carousel-tools .icon-button{width:24px}.code-resources{gap:12px}}
.video-loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:9px;background:#14242566;color:#fff;font-size:12px;pointer-events:none}.video-loading:before{content:"";width:16px;height:16px;border:2px solid #ffffff55;border-top-color:#fff;border-radius:50%;animation:video-spin .8s linear infinite}@keyframes video-spin{to{transform:rotate(360deg)}}
.scene-start{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:6;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:8px;width:88px;height:88px;padding:10px;border:1px solid #ecfff5a6;border-radius:6px;background:#c8e5db;color:#204d45;font-size:12px;font-weight:600;line-height:1.3;box-shadow:0 4px 24px #07100d55;transition:background .2s,box-shadow .2s;visibility:hidden}.robot-stage[data-preview="ready"] .scene-start{visibility:visible}.scene-start-icon{display:grid;place-items:center;width:28px;height:28px}.scene-start-icon svg,.scene-start-icon i{width:26px;height:26px;transform:translateX(1px);fill:currentColor;stroke-width:1.2}.scene-start:hover,.scene-start:focus-visible{background:#e1f2e9;box-shadow:0 6px 28px #07100d77}.scene-start:active{background:#b9d9cc}.scene-start:focus-visible{outline-color:#c8e5db;outline-offset:5px}
.scene-status{inset:auto;top:50%;left:50%;transform:translate(-50%,-50%);width:300px;max-width:85%;padding:24px 16px;display:flex;flex-direction:column;align-items:center;gap:11px;color:#eef9f5;background:linear-gradient(90deg,transparent,#0b131be8 18%,#0b131be8 82%,transparent);pointer-events:none;transition:opacity .3s ease}
.scene-status-title{font-size:24px;line-height:1.3;font-weight:600;color:#d6f5ec;background:linear-gradient(105deg,#a4d8d1,#fff3db,#c9e4f4);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent;animation:scene-breathe 1.8s ease-in-out infinite}
.scene-status-detail{font-size:13px;color:#c4d8d6;line-height:1.5}.scene-progress-row{display:flex;align-items:center;gap:10px;height:17px}.scene-progress{width:156px;height:3px;background:#bfdcd02e;overflow:hidden;border-radius:2px}.scene-progress-fill{display:block;height:100%;width:35%;background:linear-gradient(90deg,#78c9c3,#e8eddb);animation:scene-sweep 1.6s ease-in-out infinite}.scene-progress.determinate .scene-progress-fill{width:var(--scene-progress,0%);animation:none;transform:none;transition:width .15s linear}.scene-progress-value{font-size:11px;font-variant-numeric:tabular-nums;width:32px;text-align:right;color:#deece7}.scene-retry{pointer-events:auto;border:1px solid #9fcac86b;color:#d6f5ec}
.robot-stage canvas{opacity:0;transition:opacity .3s ease}.scene-poster{transition:opacity .3s ease}.wrist-slide>.camera-view{position:absolute;inset:0}.camera-view .video-start{z-index:2}.camera-view .video-loading{font-size:0;gap:0}.camera-view .video-loading:before{width:54px;height:54px}.camera-error{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.camera-view[data-playback="error"] .video-start{width:calc(100% - 12px);max-width:150px;height:38px;border-radius:4px;display:flex;align-items:center;justify-content:center;gap:6px;font-size:12px}.robot-stage[data-phase="ready"] canvas{opacity:1}.robot-stage[data-phase="ready"] .scene-status,.robot-stage[data-phase="ready"] .scene-poster{opacity:0;pointer-events:none}.robot-stage:not([data-phase="ready"]) .agent-labels{visibility:hidden}.robot-stage[data-phase="error"] .scene-progress-row{display:none}.robot-stage[data-phase="error"] .scene-status-title{animation:none}.scene-controls button:disabled{opacity:.35;cursor:wait}
@keyframes scene-breathe{0%,100%{opacity:.6}50%{opacity:1}}@keyframes scene-sweep{0%{transform:translateX(-110%)}100%{transform:translateX(390%)}}
@media(max-width:760px){.scene-status{width:270px;padding-block:19px}.scene-status-title{font-size:21px}.scene-progress{width:136px}}
@media(prefers-reduced-motion:reduce){.scene-status-title,.scene-progress-fill{animation:none}.scene-progress:not(.determinate) .scene-progress-fill{width:100%;opacity:.5}}
[hidden]{display:none!important}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}.ambient{display:none}}