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/* SimDuoReal composition: preserve the editorial palette and type while
   giving the project its own navigation, opening, and media index. */
html{scroll-padding-top:105px}
main{width:min(1060px,calc(100% - 80px));margin:0 auto}
.contents{position:sticky;top:0;left:auto;width:100%;padding:18px max(40px,calc((100vw - 1060px)/2));display:flex;align-items:center;gap:30px;background:#f8f7f2f2;backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.rail-brand{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-size:25px;letter-spacing:-.7px}
.duo-mark{position:relative;display:inline-block;width:25px;height:20px;flex-shrink:0}
.duo-mark:before,.duo-mark:after{content:'';position:absolute;width:14px;height:18px;border:1px solid var(--teal);border-radius:9px;top:0;transform:rotate(28deg)}
.duo-mark:before{left:1px}.duo-mark:after{left:10px;transform:rotate(-28deg);background:#2679700d}
.contents nav{display:flex;align-items:center;gap:27px;margin:0 0 0 auto;overflow:visible}
.contents nav:before{display:none}
.contents nav a{display:inline-flex;align-items:center;gap:5px;font-size:11px;min-height:28px;border-bottom:1px solid transparent;white-space:nowrap}
.contents nav a[aria-current]{border-bottom-color:var(--teal)}
.nav-soon{font-size:8px;color:var(--muted)}
.rail-paper{margin:0;padding:4px 0;gap:14px;font-size:11px;white-space:nowrap}
.hero{text-align:left;padding:53px 0 35px}
.hero-title-row{display:grid;grid-template-columns:1.7fr 1fr;gap:55px;align-items:end}
.hero h1{font-size:85px;line-height:1.02;margin:10px 0 17px}
.paper-title{font-size:33px;line-height:1.17}
.hero-details{padding:0 0 4px 28px;border-left:1px solid var(--line)}
.hero-details .overline{font-size:9px}
.hero-details .authors{text-align:left;font-size:12px;line-height:2;margin:11px 0 0;max-width:300px}
.hero-details .resource-links{justify-content:flex-start;margin-top:20px}
.overview{border-top:0;padding-top:0}
.overview-figure>figcaption{font-size:10px}
.overview-figure>figcaption>span:last-child{font-size:9px}
.intro-layout{display:grid;grid-template-columns:1fr 3fr;gap:30px;margin-top:43px;padding:0 0 7px}
.intro-layout>.overline{padding-top:9px}
.intro-layout .lead{text-align:left;font-size:37px;line-height:1.17;margin:0;max-width:770px}
.intro-layout .lead br{display:block}
.intro-layout .lead em{margin:0}
.intro-layout .overview-copy{text-align:left;font-size:14px;line-height:1.85;max-width:660px;margin:19px 0 0}
.intro-layout .resource-links{justify-content:flex-start;margin-top:20px}
.intro-layout .resource-links>a{border:0;border-radius:0;border-bottom:1px solid #b6c6b2;padding:0 0 5px;font-family:var(--sans);font-size:11px;gap:14px}
.section{margin-top:72px;padding-top:30px}
.section-heading{display:grid;grid-template-columns:1fr 3fr;gap:30px;align-items:start}
.section-heading>.overline{padding-top:9px;margin:0}
.section-heading h2{font-size:48px}
.section>.section-intro{margin-left:calc((100% - 30px)/4 + 30px);max-width:670px;font-size:14px}
.task-stage{display:grid;grid-template-columns:230px minmax(0,1fr);gap:35px;margin-top:31px;align-items:start}
.task-tabs{display:flex;flex-direction:column;margin:0;border:0;gap:0}
.task-tabs button{padding:17px 10px 17px 0;border:0;border-top:1px solid var(--line);border-left:2px solid transparent;gap:12px}
.task-tabs button:last-child{border-bottom:1px solid var(--line)}
.task-tabs button[aria-selected=true]{border-bottom-color:var(--line);border-left-color:var(--teal);background:#e9eee565;padding-left:10px}
.task-tabs button img{width:64px;height:46px;object-fit:cover;border-radius:2px;opacity:.75}
.task-tabs button[aria-selected=true] img{opacity:1}
.task-tabs button .task-option{display:flex;flex-direction:column;font-size:12px;color:inherit;gap:5px}
.task-option small{font-size:8px;letter-spacing:.65px;text-transform:uppercase;color:var(--muted)}
#task-panel{padding:0;min-width:0}.task-detail{margin-top:18px;gap:22px}.task-detail h3{font-size:28px}.task-detail p{font-size:12px}.task-score strong{font-size:35px}
#tasks>.small-note{margin-left:265px;font-size:10px}
.demo-section{padding:32px 36px}.demo-layout{grid-template-columns:1fr 1.25fr;gap:55px}.demo-copy h2{font-size:49px}
.behavior-grid{gap:35px}.behavior-grid figure:nth-child(2){padding-top:42px}
.method-tabs{margin-top:30px}.method-panel{grid-template-columns:1.2fr 1fr}.method-diagram{padding:32px}.method-explanation{padding:35px}
.results-layout{grid-template-columns:1fr 1.6fr;gap:65px}.big-number{font-size:100px}
.paper-section{grid-template-columns:1fr 1fr;gap:55px}.paper-section .authors{font-size:11px;color:var(--muted);margin:18px 0 0;max-width:390px}
footer>a{display:flex;align-items:center;gap:8px}footer>a span{margin:0}.back-top{font:10px var(--sans);color:var(--muted)}footer>span{display:block}
@media(min-width:1500px){main{width:1120px}.contents{padding-left:calc((100vw - 1120px)/2);padding-right:calc((100vw - 1120px)/2)}.hero{padding-top:60px}.hero h1{font-size:95px}}
@media(max-width:1000px){main{width:calc(100% - 60px)}.contents{padding:16px 30px;gap:22px}.contents nav{gap:22px}.hero-title-row{grid-template-columns:1.5fr 1fr;gap:28px}.hero h1{font-size:75px}.paper-title{font-size:29px}.hero-details{padding-left:22px}.hero-details .authors{font-size:11px}.task-stage{grid-template-columns:205px minmax(0,1fr);gap:24px}.task-tabs button{gap:9px}.task-tabs button img{width:53px;height:40px}.task-tabs button .task-option{font-size:11px}.task-option small{font-size:7px}#tasks>.small-note{margin-left:229px}.section-heading h2{font-size:43px}.intro-layout .lead{font-size:33px}.demo-layout{gap:32px}.method-diagram{padding:24px}.method-explanation{padding:28px}.paper-section{gap:30px}}
@media(max-width:760px){main{width:calc(100% - 44px);margin:0 auto}.contents{padding:13px 22px 0;flex-wrap:wrap;gap:5px 18px}.rail-brand{font-size:23px}.rail-paper{margin-left:auto}.contents nav{order:3;width:100%;justify-content:space-between;gap:16px;margin:0;overflow:visible}.contents nav a{font-size:10px;min-height:35px}.hero{padding:34px 0 27px}.hero-title-row{grid-template-columns:1fr;gap:22px}.hero h1{font-size:77px;margin:12px 0 14px}.paper-title{font-size:31px}.hero-details{border-left:0;border-top:1px solid var(--line);padding:17px 0 0;display:grid;grid-template-columns:1fr auto;gap:5px 20px;align-items:center}.hero-details>.overline{display:none}.hero-details .authors{margin:0;max-width:390px}.hero-details .resource-links{margin:0;gap:6px;flex-wrap:nowrap}.hero-details .resource-links>a,.hero-details .resource-links>.unavailable{font-size:11px;padding:5px 8px}.intro-layout{grid-template-columns:1fr;gap:12px;margin-top:29px}.intro-layout>.overline{padding-top:0}.intro-layout .lead{font-size:33px}.intro-layout .overview-copy{font-size:13px;margin-top:16px}.section{margin-top:52px;padding-top:25px}.section-heading{grid-template-columns:1fr;gap:12px}.section-heading>.overline{padding:0}.section-heading h2{font-size:41px}.section>.section-intro{margin-left:0;font-size:13px}.task-stage{grid-template-columns:1fr;gap:17px;margin-top:23px}.task-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.task-tabs button{display:flex;flex-direction:column;align-items:stretch;border:0;border-bottom:2px solid var(--line);padding:0 0 9px!important;gap:7px}.task-tabs button:last-child{border-bottom:2px solid var(--line)}.task-tabs button[aria-selected=true]{border-left:0;border-bottom-color:var(--teal);background:transparent}.task-tabs button img{width:100%;height:auto;aspect-ratio:16/10}.task-tabs button .task-option{font-size:10px;gap:3px}.task-option small{font-size:7px;letter-spacing:.3px}#tasks>.small-note{margin-left:0}.demo-section{padding:26px}.demo-layout{grid-template-columns:1fr 1.15fr;gap:25px}.demo-copy h2{font-size:39px}.demo-copy p{font-size:12px}.behavior-grid{gap:22px}.behavior-grid figure:nth-child(2){padding-top:30px}.behavior-grid h3{font-size:25px}.method-panel{grid-template-columns:1.1fr 1fr}.method-diagram{padding:20px 15px}.method-explanation{padding:24px 20px}.results-layout{gap:35px}.big-number{font-size:85px}.paper-section{grid-template-columns:1fr;gap:28px}.paper-section .authors{max-width:500px}.citation pre{font-size:11px}footer>span{display:none}}
@media(max-width:540px){.hero h1{font-size:64px;letter-spacing:-3px}.hero>.overline{font-size:8px}.paper-title{font-size:29px}.hero-details{grid-template-columns:1fr;gap:13px}.hero-details .authors{font-size:10px;max-width:330px;line-height:1.9}.hero-details .resource-links{justify-content:flex-start}.overview-figure>figcaption{font-size:9px}.overview-figure>figcaption>span:last-child{font-size:8px;max-width:110px}.intro-layout .lead{font-size:29px}.intro-layout .overview-copy{font-size:12px}.section-heading h2{font-size:38px}.task-tabs{grid-template-columns:1fr 1fr;gap:12px 16px}.task-tabs button{flex-direction:row;align-items:center;gap:10px;padding-bottom:10px!important}.task-tabs button img{width:44px;height:35px;aspect-ratio:auto;flex-shrink:0}.task-tabs button .task-option{font-size:10px}.task-option small{font-size:6.5px;letter-spacing:.2px}.task-detail{gap:17px}.task-detail h3{font-size:25px}.task-detail p{font-size:11px}.task-score strong{font-size:32px}.demo-layout{grid-template-columns:1fr;gap:22px}.demo-copy h2{font-size:42px}.demo-copy h2 br{display:block}.behavior-grid{grid-template-columns:1fr;gap:28px}.behavior-grid figure:nth-child(2){padding-top:0}.method-panel{grid-template-columns:1fr}.method-diagram{padding:25px}.method-explanation{padding:25px}.results-layout{grid-template-columns:1fr;gap:28px}.big-number{font-size:76px}.result-feature h3{font-size:22px}.paper-section h2{font-size:49px}.paper-section .authors{font-size:10px}footer{gap:15px}.back-top{font-size:9px}}
@media(max-width:360px){.hero h1{font-size:57px}.paper-title{font-size:26px}.contents nav{gap:8px}.contents nav a{font-size:9px}.task-tabs button img{width:35px;height:31px}.task-tabs button{gap:7px}.task-tabs button .task-option{font-size:9px}.task-option small{font-size:6px}.section-heading h2{font-size:35px}.intro-layout .lead{font-size:27px}}

/* Playback speeds: compact overlay, with no extra video variants. */
.video-speed-controls{position:absolute;z-index:2;top:12px;right:12px;display:flex;align-items:center;gap:2px;padding:3px;background:#18221cda;border:1px solid #ffffff30;border-radius:4px;backdrop-filter:blur(8px)}
.video-speed-controls button{border:1px solid transparent;background:transparent;color:#fff;border-radius:3px;padding:6px 7px;min-width:36px;min-height:30px;font:12px/1.2 var(--sans);font-variant-numeric:tabular-nums;transition:background .15s,color .15s}
.video-speed-controls button[aria-pressed=true]{background:var(--paper);color:var(--teal)}
.video-speed-controls button:hover{border-color:#ffffff80}
.video-speed-controls button:focus-visible{outline:2px solid #d6ecdf;outline-offset:2px}
@media(max-width:540px){.video-speed-controls{top:9px;right:9px}.hero-video-frame .reel-label{top:60px;left:10px}}
@media(pointer:coarse){.video-speed-controls button{min-width:44px;min-height:44px;padding:8px 6px}}

/* Grouped dexterity clips can grow without changing the section layout. */
.dexterity-collection{margin-top:38px;display:grid;gap:42px}
.dexterity-group{min-width:0}
.dexterity-group-heading{display:flex;align-items:baseline;gap:14px;border-top:1px solid var(--line);padding-top:19px;margin-bottom:14px}
.dexterity-index,.dexterity-count{font:10px/1.5 var(--sans);font-variant-numeric:tabular-nums;letter-spacing:.07em;color:var(--teal)}
.dexterity-group-heading h3{font:30px/1.1 var(--serif);letter-spacing:-.5px;margin:0}
.dexterity-count{margin-left:auto;white-space:nowrap}
.dexterity-description{font-size:13px;line-height:1.7;max-width:630px;margin:0 0 20px;color:var(--muted)}
.dexterity-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.dexterity-grid-pair{grid-template-columns:repeat(2,minmax(0,1fr))}
.dexterity-feature{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);align-items:center;gap:38px}
.dexterity-clip{margin:0;min-width:0}
.dexterity-clip figcaption{padding-top:11px}
.dexterity-clip h4{font:13px/1.5 var(--sans);font-weight:500;margin:0}
.dexterity-context>p:not(.overline){font:27px/1.25 var(--serif);margin:16px 0}
.dexterity-context>p.dexterity-context-note{font:13px/1.7 var(--sans);color:var(--muted);max-width:300px}
.dexterity-grid-single{grid-template-columns:1fr}
.dexterity-pregrasp .video-frame{aspect-ratio:16/9}
.dexterity-pregrasp video{height:auto;aspect-ratio:16/9;object-fit:contain}
@media(max-width:760px){.dexterity-feature{grid-template-columns:1fr;gap:12px}.dexterity-context{max-width:520px}.dexterity-context>p:not(.overline){font-size:24px}.dexterity-context>p.dexterity-context-note{max-width:none;font-size:12px}.dexterity-grid{gap:14px}.dexterity-group-heading h3{font-size:26px}.dexterity-clip h4{font-size:11px}}
@media(max-width:540px){.dexterity-collection{gap:32px;margin-top:28px}.dexterity-grid,.dexterity-grid-pair{grid-template-columns:1fr;gap:24px}.dexterity-group-heading{gap:10px}.dexterity-group-heading h3{font-size:24px}.dexterity-count{font-size:9px}.dexterity-description{font-size:12px}.dexterity-clip h4{font-size:13px}}

/* Keep video imagery unobstructed until the reader interacts. */
.video-speed-controls{opacity:0;visibility:hidden;pointer-events:none;transition:opacity .15s,visibility .15s}
.video-frame.controls-visible .video-speed-controls{opacity:1;visibility:visible;pointer-events:auto}
.video-frame:not(.controls-visible) video::-webkit-media-controls{display:none}
.video-frame video:focus-visible{outline:2px solid var(--teal);outline-offset:-3px}

/* Site-owned controls replace the browser's native video chrome. */
.custom-player video::-webkit-media-controls{display:none!important}
.video-playback-controls{position:absolute;z-index:2;left:10px;right:10px;bottom:10px;display:flex;align-items:center;gap:10px;padding:4px 10px 4px 4px;border:1px solid #ffffff30;border-radius:4px;background:#18221cda;color:#fff;backdrop-filter:blur(8px);opacity:0;visibility:hidden;pointer-events:none;transition:opacity .15s,visibility .15s}
.controls-visible .video-playback-controls{opacity:1;visibility:visible;pointer-events:auto}
.video-play-toggle{display:grid;place-items:center;width:32px;height:32px;flex-shrink:0;padding:6px;border:0;border-radius:3px;background:transparent;color:inherit}
.video-play-toggle:hover{background:#ffffff20}
.video-play-toggle svg{width:18px;height:18px}
.video-time{font:10px/1 var(--sans);font-variant-numeric:tabular-nums;white-space:nowrap}
.video-seek{--progress:0%;appearance:none;-webkit-appearance:none;flex:1;min-width:0;height:24px;margin:0;cursor:pointer;background:transparent}
.video-seek::-webkit-slider-runnable-track{height:3px;border-radius:2px;background:linear-gradient(to right,#d6ecdf var(--progress),#ffffff45 var(--progress))}
.video-seek::-webkit-slider-thumb{-webkit-appearance:none;width:10px;height:10px;margin-top:-3.5px;background:var(--paper);border:0;border-radius:50%}
.video-seek::-moz-range-track{height:3px;border-radius:2px;background:#ffffff45}
.video-seek::-moz-range-progress{height:3px;background:#d6ecdf}
.video-seek::-moz-range-thumb{width:10px;height:10px;background:var(--paper);border:0;border-radius:50%}
.video-playback-controls :focus-visible{outline:2px solid #d6ecdf;outline-offset:2px}
@media(pointer:coarse){.video-play-toggle{width:44px;height:44px}.video-seek{height:44px}}

.dexterity-nav{position:sticky;top:calc(var(--main-nav-height,80px) + 10px);z-index:4;display:flex;align-items:center;gap:5px;width:fit-content;max-width:100%;margin:26px auto 0;padding:4px;background:var(--teal-soft);border-radius:30px;box-shadow:0 2px 10px #292e2908}
.dexterity-nav a{display:flex;align-items:center;justify-content:center;min-height:40px;padding:0 18px;border-radius:25px;font:12px/1.3 var(--sans);color:var(--muted);white-space:nowrap;transition:color .15s,background .15s,box-shadow .15s}
.dexterity-nav a:hover{color:var(--teal);background:#f8f7f280}
.dexterity-nav a[aria-current]{color:var(--teal);background:var(--paper);box-shadow:0 1px 4px #292e2914}
.dexterity-nav a:focus-visible{outline-offset:1px}
@media(max-width:540px){.dexterity-nav{gap:0;width:100%}.dexterity-nav a{flex:1;min-width:0;padding:0 8px;font-size:11px;min-height:44px}}

/* A quieter research-page treatment, retaining the existing layout. */
.section-heading h2,.demo-copy h2,.paper-section h2{font-family:var(--sans);font-size:34px;line-height:1.25;font-weight:500;letter-spacing:-.7px}
h2 em,.intro-layout .lead em{font-style:normal;color:inherit}
.hero h1{font-size:76px;letter-spacing:-2.5px}
.paper-title{font-family:var(--sans);font-size:28px;line-height:1.35;letter-spacing:-.4px}
.overline{letter-spacing:1px}
.intro-layout .lead{font-family:var(--sans);font-size:27px;line-height:1.4;letter-spacing:-.4px}
.task-detail h3,.method-explanation h3,.result-feature h3,.simulation-results h3{font-family:var(--sans);font-size:22px;line-height:1.35;font-weight:500;letter-spacing:-.3px}
.dexterity-group-heading h3{font-family:var(--sans);font-size:22px;line-height:1.35;font-weight:500;letter-spacing:-.3px}
.dexterity-context>p:not(.overline){font-family:var(--sans);font-size:19px;line-height:1.6;letter-spacing:0}
.dexterity-context>p.dexterity-context-note{font-size:13px}
.resource-links>a,.resource-links>.unavailable{font-family:var(--sans)}
.dexterity-nav,.dexterity-nav a[aria-current]{box-shadow:none}
.dexterity-nav{background:#eef0ea}
.big-number{font-family:var(--sans);font-size:76px;font-weight:500;letter-spacing:-3px}
.sim-comparison strong{font-family:var(--sans);font-size:40px;letter-spacing:-1px}
@media(max-width:760px){.hero h1{font-size:66px}.paper-title{font-size:25px}.section-heading h2,.demo-copy h2,.paper-section h2{font-size:30px}.intro-layout .lead{font-size:24px}.dexterity-group-heading h3{font-size:20px}}
@media(max-width:540px){.hero h1{font-size:56px;letter-spacing:-2px}.paper-title{font-size:23px}.section-heading h2,.demo-copy h2,.paper-section h2{font-size:27px}.intro-layout .lead{font-size:22px}.dexterity-group-heading h3{font-size:18px}.task-detail h3,.method-explanation h3{font-size:20px}.big-number{font-size:64px}}

/* Simulation demonstrations for the three workspace experts. */
.method-panel.expert-training{display:block;padding:28px}
.expert-training-intro h3{font:500 22px/1.35 var(--sans);letter-spacing:-.3px}
.expert-training-intro p{max-width:740px;font-size:13px;line-height:1.7;color:var(--muted);margin-top:10px}
.expert-tabs{display:flex;gap:24px;border-bottom:1px solid var(--line);margin:22px 0}
.expert-tabs button{border:0;border-bottom:2px solid transparent;background:transparent;padding:10px 2px;font:13px/1.4 var(--sans);color:var(--muted)}
.expert-tabs button[aria-selected=true]{color:var(--teal);border-bottom-color:var(--teal)}
.expert-panel{display:grid;grid-template-columns:minmax(0,3fr) minmax(180px,1fr);gap:26px;align-items:center}
.expert-panel .video-frame{background:#fff}
.expert-panel video{aspect-ratio:auto;height:auto}
.expert-caption h4{font:500 18px/1.4 var(--sans);margin:10px 0}
.expert-caption p{font:13px/1.7 var(--sans);color:var(--muted)}
@media(max-width:760px){.method-panel.expert-training{padding:20px}.expert-panel{grid-template-columns:1fr;gap:18px}.expert-training-intro h3{font-size:20px}.expert-tabs{gap:18px}.expert-tabs button{font-size:12px}.expert-caption h4{margin:6px 0}}
@media(max-width:380px){.method-panel.expert-training{padding:14px}.expert-tabs{gap:12px}.expert-tabs button{font-size:11px}}

/* Concise, scannable method explanations. */
.method-points{margin:12px 0 0;padding-left:18px;max-width:740px;color:var(--muted);font:13px/1.7 var(--sans)}
.method-points li+li{margin-top:8px}
.method-points strong{font-weight:500;color:var(--ink)}
.method-points li::marker{color:var(--teal)}

/* Object choices appear only within the barcode-scanning task. */
.barcode-objects{display:flex;flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:16px}
.barcode-objects[hidden]{display:none}
.object-label{font-size:15px;font-weight:700;color:var(--ink)}
.object-hint{font-size:12px;color:var(--muted)}
.task-option .task-video-count{display:block;font-size:11px;font-weight:700;color:var(--teal);line-height:1.4;margin-top:4px;letter-spacing:0}
.object-options{display:flex;flex-wrap:wrap;gap:10px}
.object-options button{padding:8px 5px;border:0;border-bottom:2px solid var(--line);border-radius:0;background:transparent;color:var(--muted);font:500 13px/1.4 var(--sans)}
.object-options button:hover{border-color:var(--teal);color:var(--teal)}
.object-options button[aria-pressed=true]{background:transparent;border-bottom-color:var(--teal);color:var(--teal);font-weight:700}
.object-options button:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
@media(max-width:540px){.barcode-objects{align-items:flex-start;gap:10px}.object-label{padding-top:0}.object-options button{padding:7px 10px}}

@media(pointer:coarse){.object-options button{min-height:44px}}

/* Keep the current speed visible when the interactive controls are tucked away. */
.video-speed-badge{position:absolute;z-index:2;top:12px;right:12px;padding:6px 9px;border:1px solid #ffffff30;border-radius:4px;background:#18221cda;color:#fff;font:12px/1.2 var(--sans);font-variant-numeric:tabular-nums;pointer-events:none;transition:opacity .15s,visibility .15s}
.controls-visible .video-speed-badge{opacity:0;visibility:hidden}
@media(max-width:540px){.video-speed-badge{top:9px;right:9px}}

/* Keep the combined handover label inside the subsection capsule. */
.dexterity-nav a{white-space:normal;text-align:center}
@media(max-width:760px){.dexterity-nav a{padding:6px 10px}.dexterity-nav a:first-child{max-width:165px}}
@media(max-width:540px){.dexterity-nav a{padding:6px}.dexterity-nav a:first-child{flex:1.8;max-width:none}}