@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');

:root{--ink:#19334a;--navy:#143b59;--blue:#005487;--blue-soft:#eaf2f7;--amber:#e4a82d;--amber-soft:#fff5dc;--line:#dce5eb;--muted:#637584;--paper:#fff;--soft:#f7f9fb;--shadow:0 22px 70px rgba(22,58,82,.09)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:'DM Sans',Arial,sans-serif;line-height:1.6}button,input{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}img,video{max-width:100%;display:block}img{height:auto}::selection{background:#f4d78c;color:#19334a}:focus-visible{outline:3px solid var(--amber);outline-offset:3px}.page-width{width:min(1180px,calc(100% - 64px));margin-inline:auto}.skip-link{position:absolute;left:16px;top:-80px;background:var(--navy);color:#fff;padding:12px 18px;z-index:20}.skip-link:focus{top:12px}
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@media(max-width:540px){.page-width{width:calc(100% - 28px)}h1{font-size:42px}.hero-subtitle{font-size:19px}.eyebrow{font-size:9px;letter-spacing:.12em;flex-wrap:wrap}.header-action{display:none}.takeaway-value{font-size:27px}.takeaway-item{padding:23px 15px}.takeaway-item:nth-child(2),.takeaway-item:nth-child(4){padding-right:0}.takeaway-item>span:last-child{font-size:11px}.route-diagram{gap:4px;grid-template-columns:1fr 15px 1fr 15px 1fr}.diagram-input,.diagram-vlm,.diagram-expert{height:110px}.diagram-small{font-size:8px}.diagram-vlm{font-size:19px}.diagram-expert{font-size:15px}.diagram-vlm span,.diagram-expert span{font-size:8px}.diagram-arrow{font-size:18px}.signal-line{font-size:10px}.condition-grid{grid-template-columns:1fr}.condition-card{min-height:0}.polaris-grid{grid-template-columns:1fr}.video-card-head{padding:10px}.video-card video{aspect-ratio:32/9}.view-switch button{font-size:10px}.video-caption{display:block}.video-caption span:last-child{display:block;text-align:left;margin-top:8px}.sync-controls{gap:8px;padding:12px}.sync-play{padding:8px}.sync-time{font-size:10px}.sync-restart{padding:5px 8px}.manip-row{grid-template-columns:115px 1fr 39px;font-size:10px}.progress-panel,.manipulation-panel{padding:19px}.perspective{grid-template-columns:1fr}.perspective-mark{height:50px}.footer-links{gap:14px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}}
.supporting-figure{margin:0 0 28px;border:1px solid var(--line);border-radius:8px;background:#fff;overflow:hidden}.supporting-figure summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:15px 19px;color:var(--blue);font-size:12px;font-weight:800;cursor:pointer}.supporting-figure summary::-webkit-details-marker{display:none}.supporting-figure summary:hover{background:#f4f8fa}.supporting-figure[open] summary{border-bottom:1px solid var(--line)}.supporting-figure .paper-figure{margin:18px;border-radius:5px;box-shadow:none}.supporting-figure .paper-figure img{width:100%;height:auto}
.hero{display:block;min-height:0}.hero-copy{max-width:900px;margin-inline:auto;text-align:center}.hero .eyebrow,.hero-actions{justify-content:center}.hero-dek{max-width:740px;margin-inline:auto}.hero-figure{max-width:1180px;margin:55px auto 0}
.figure-topline{align-items:flex-start;gap:20px}.figure-topline .figure-kicker{text-transform:none;letter-spacing:0;font-size:12px;line-height:1.4;max-width:770px}.figure-topline>span:last-child{flex:none}.token-branch{width:min(55%,360px);margin:0 auto 16px;padding:12px 16px;border:1px solid #bfd9e7;border-radius:8px;background:#eff7fb;text-align:center;transition:opacity .25s,background .25s,border-color .25s}.token-branch-label{display:block;font-size:11px;font-weight:800;color:var(--blue)}.token-pills{display:flex;justify-content:center;gap:5px;margin:8px 0}.token-pills i{font-style:normal;background:var(--blue);color:#fff;border-radius:4px;padding:2px 7px;font-size:11px;font-weight:800}.token-branch-loss{display:block;color:#376f92;font-size:10px;font-weight:800}.route-stage[data-token=off] .token-branch{background:#f3f5f6;border-color:#d9e0e4}.route-stage[data-token=off] .token-branch-label,.route-stage[data-token=off] .token-branch-loss{color:#87959e}.route-stage[data-token=off] .token-pills i{background:#abb8c0;text-decoration:line-through}.gradient-path{position:relative;height:66px;width:56%;margin:9px 0 0 42%;color:#b6811e}.gradient-back-arrow{position:absolute;left:0;top:-14px;font-size:47px;line-height:1;z-index:1}.gradient-back-line{position:absolute;top:10px;left:36px;right:0;height:3px;background:currentColor}.gradient-back-label{position:absolute;left:0;right:0;top:28px;text-align:center;color:#8e6a25;font-size:11px;font-weight:800}.stop-marker{display:none;position:absolute;left:45%;top:-8px;z-index:2;width:27px;height:27px;border:2px solid #81919a;border-radius:50%;background:#fff;color:#81919a;text-align:center;font-size:22px;line-height:21px;font-weight:800}.route-stage[data-route=insulated] .gradient-path{color:#b8c4ca}.route-stage[data-route=insulated] .gradient-back-arrow{opacity:.25}.route-stage[data-route=insulated] .gradient-back-line{left:calc(45% + 25px)}.route-stage[data-route=insulated] .stop-marker{display:block}.route-stage[data-route=insulated] .gradient-back-label{color:#687b87}.route-stage .diagram-footnote{line-height:1.5}.route-stage .diagram-footnote+.diagram-footnote{margin-top:5px}
@media(max-width:540px){.token-branch{width:83%;padding:9px}.gradient-path{width:66%;margin-left:33%}.gradient-back-label{font-size:10px}}

/* The driving comparison uses separate browser-ready exports for each arm. */
.driving-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;padding:11px 16px;border-bottom:1px solid var(--line)}
.driving-toolbar .view-switch{padding:0;border:0;flex-wrap:wrap}
.driving-pair{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--line)}
.driving-card{position:relative;min-width:0;background:#fff}
.driving-card video{width:100%;aspect-ratio:16/9;object-fit:cover;object-position:left center;background:#142533}
.driving-card>a{display:block;padding:8px 14px 11px;color:var(--blue);font-size:11px;font-weight:800;text-align:right}
.driving-card>a:hover{text-decoration:underline}
.driving-hud{display:none;position:absolute;left:12px;bottom:44px;gap:12px;padding:5px 8px;border-radius:4px;background:rgba(12,27,37,.82);color:#fff;font-size:10px;font-weight:800}
.driving-hud span{display:flex;align-items:center;gap:5px}
.driving-hud i{display:block;width:14px;height:3px;border-radius:2px}
.hud-gt{background:#3ae764}.hud-route{background:#ffba3b}
.driving-player.is-groundtruth .driving-hud{display:flex}
.driving-player.is-full .driving-pair{grid-template-columns:1fr}
.driving-player.is-full .driving-card video{aspect-ratio:25/9;object-fit:contain}
@media(max-width:720px){.driving-pair{grid-template-columns:1fr}.driving-toolbar{display:block}.driving-layout-switch{margin-top:8px}.driving-card video{aspect-ratio:16/9}}

/* Gradient routing diagram: amber particles show the flow-loss backward pass. */
.route-explainer{box-shadow:0 12px 42px rgba(22,58,82,.055)}
.route-stage{background:#fff}
.stage-label{margin-bottom:22px;color:#637f91;letter-spacing:.08em}
.token-branch{position:relative;margin-bottom:22px;background:var(--blue-soft);border-color:#c7dce8}
.token-branch::after{content:"";position:absolute;left:50%;top:100%;width:2px;height:22px;background:var(--blue);opacity:.65;transform:translateX(-50%)}
.token-branch::before{content:"";position:absolute;left:calc(50% - 3px);top:calc(100% + 15px);width:7px;height:7px;border-radius:50%;background:var(--blue);z-index:1;animation:token-flow 1.6s ease-in-out infinite}
.route-stage[data-token=off] .token-branch::before,.route-stage[data-token=off] .token-branch::after{opacity:0;animation:none}
.route-diagram{gap:12px}
.diagram-input,.diagram-vlm,.diagram-expert{height:132px;border-radius:6px}
.diagram-input{background:#f5f8fa}
.diagram-vlm{background:#eaf2f7;border-color:#bdd7e5}
.diagram-expert{background:#fff7e6;border-color:#f0dba7}
.diagram-arrow{font-size:24px;color:#80a6ba}
.gradient-path{position:relative;width:56%;height:34px;margin:13px 0 0 42%;color:var(--amber)}
.gradient-track{position:absolute;left:0;right:0;top:14px;height:2px;background:linear-gradient(90deg,#e4a82d,#c58a1a);border-radius:2px}
.gradient-track::before{content:"";position:absolute;left:-2px;top:-4px;border-top:5px solid transparent;border-bottom:5px solid transparent;border-right:7px solid #c58a1a}
.gradient-particle{position:absolute;top:10px;left:100%;width:10px;height:10px;border-radius:50%;background:#d59a22;box-shadow:0 0 0 4px rgba(228,168,45,.16);animation:gradient-coupled 2.3s linear infinite}
.gradient-particle:nth-of-type(3){animation-delay:-.77s}
.gradient-particle:nth-of-type(4){animation-delay:-1.54s}
.gradient-stop{display:none;position:absolute;left:43%;top:0;z-index:2;align-items:center;gap:5px;color:#925f13;white-space:nowrap;transform:translateX(-50%)}
.gradient-stop span{display:grid;place-items:center;width:28px;height:28px;border:2px solid #c58a1a;border-radius:50%;background:#fff8e9;font:800 20px/1 'Manrope',sans-serif}
.gradient-stop small{position:absolute;left:50%;top:28px;transform:translateX(-50%);font-size:9px;font-weight:800}
.gradient-back-label{position:static;width:56%;margin:0 0 18px 42%;text-align:center;color:#936921;font-size:11px;font-weight:800}
.route-stage[data-route=insulated] .gradient-track{background:linear-gradient(90deg,#d6e0e5 0 43%,#d6e0e5 43% 45%,#d5a242 45% 100%)}
.route-stage[data-route=insulated] .gradient-track::before{border-right-color:#d6e0e5}
.route-stage[data-route=insulated] .gradient-stop{display:flex}
.route-stage[data-route=insulated] .gradient-particle{animation-name:gradient-insulated}
.route-stage[data-route=insulated] .gradient-back-label{color:#7d6b4d}
@keyframes gradient-coupled{0%{left:97%;opacity:0}10%{opacity:1}90%{opacity:1}100%{left:0;opacity:0}}
@keyframes gradient-insulated{0%{left:97%;opacity:0}12%{opacity:1}90%{opacity:1}100%{left:45%;opacity:0}}
@keyframes token-flow{0%,100%{transform:translateY(-12px);opacity:0}45%{opacity:1}75%{transform:translateY(0);opacity:1}}
@media(max-width:540px){.gradient-path,.gradient-back-label{width:66%;margin-left:33%}.gradient-stop small{font-size:8px}}
.architecture-signals{display:grid;grid-template-columns:1fr 28px 1fr 28px 1fr;gap:12px;align-items:end;margin-bottom:20px}
.architecture-signals .token-branch{grid-column:3;width:100%;margin:0;padding:10px 7px;border-radius:6px}
.architecture-signals .token-branch::after{height:21px}
.architecture-signals .action-branch{grid-column:5;min-width:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:100%;min-height:84px;border:1px solid #ead9b7;border-radius:6px;background:#fff9ed;color:#805d1e;text-align:center;font-size:11px;font-weight:800}
.action-branch svg{width:80px;height:19px;overflow:visible;fill:none;stroke:#d39a2c;stroke-width:3;stroke-linecap:round}
.action-branch small{font-size:10px;color:#9a7126}
.diagram-input{justify-content:flex-start;gap:4px;padding:5px;background:#fff;border-color:#dce5eb;overflow:hidden}
.diagram-input img{width:100%;height:75px;object-fit:cover;border-radius:3px}
.diagram-input .diagram-small{font-size:10px;color:#5b7281}
.language-card{width:100%;padding:2px 4px;border-radius:3px;background:#eaf2f7;color:#005487;font-size:9px;font-weight:800;line-height:1.25}
.diagram-vlm{background:#0873ac;border-color:#0873ac;color:#fff;font-size:27px}
.diagram-expert{background:#30373c;border-color:#30373c;color:#fff;font-size:19px}
.diagram-arrow-second{display:flex;flex-direction:column;align-items:center;justify-content:center;line-height:1}
.diagram-arrow-second small{width:60px;margin-top:4px;color:#60798a;font-size:8px;font-weight:800;line-height:1.1;text-align:center}
@media(max-width:540px){.architecture-signals{grid-template-columns:1fr 15px 1fr 15px 1fr;gap:4px}.architecture-signals .token-branch{padding:6px 2px}.architecture-signals .action-branch{min-height:100px;padding:4px;font-size:9px}.action-branch svg{width:55px}.action-branch small{font-size:8px}.token-branch-label,.token-branch-loss{font-size:8px}.token-pills i{font-size:8px;padding:2px}.diagram-input img{height:55px}.diagram-input .diagram-small,.language-card{font-size:7px}.diagram-arrow-second small{width:44px;font-size:6px}}
.driving-card video{aspect-ratio:25/9;object-fit:contain}
.route-stage .diagram-footnote{font-size:14px;line-height:1.55;color:#536b7b}
.route-stage .diagram-footnote+.diagram-footnote{margin-top:11px}
.molmo-instruction{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:0;padding:13px 17px;border-bottom:1px solid var(--line);font-size:12px;color:#566d7d}
.molmo-instruction span{display:inline-block;padding:4px 7px;border-radius:3px;background:var(--blue-soft);color:var(--blue);font-size:10px;font-weight:800;white-space:nowrap}
.molmo-instruction strong{font-size:12px;font-weight:700;color:var(--navy)}
#molmo-grid .video-card-head{min-height:91px;padding:13px 16px;align-items:flex-start}
#molmo-grid .video-card-head>.condition-dot{margin-top:8px}
#molmo-grid .video-card-head>strong{margin-top:3px;font-size:13px}
.molmo-score{--score-color:#a94942;--score-pct:0%;display:flex;flex-direction:column;align-items:flex-end;min-width:112px;margin-left:auto;color:var(--score-color)}
.molmo-score span{color:#677e8a;font-size:10px;font-weight:800;letter-spacing:.05em;text-transform:uppercase}
.molmo-score strong{display:block;font:800 32px/1.08 'Manrope',sans-serif;letter-spacing:-.055em;color:var(--score-color);font-variant-numeric:tabular-nums}
.molmo-score i{display:block;width:100%;height:5px;margin-top:6px;border-radius:3px;background:#e6ebee;overflow:hidden}
.molmo-score i::before{content:"";display:block;width:var(--score-pct);height:100%;border-radius:inherit;background:var(--score-color);transition:width .2s ease,background .2s ease}
.molmo-score[data-level=partial]{--score-color:#b47b21}
.molmo-score[data-level=high]{--score-color:#6f8d39}
.molmo-score[data-level=complete]{--score-color:#087c4e}
.molmo-score[data-level=complete] strong{font-size:38px;font-weight:800}
@media(max-width:540px){#molmo-grid .video-card-head{min-height:85px}.molmo-score{min-width:95px}.molmo-score strong{font-size:29px}.molmo-score[data-level=complete] strong{font-size:34px}}
.sync-play:disabled{opacity:.72;cursor:wait}
.token-types{display:block;font-size:8px;font-weight:700;line-height:1.3;color:#557c92;margin:-2px 0 4px}
.route-stage[data-token=off] .token-types{color:#8b9ba4}
.driving-toolbar .view-switch{width:100%;gap:6px}
.driving-toolbar .view-switch button{flex:1;white-space:nowrap}
@media(max-width:720px){.driving-toolbar .view-switch{display:grid;grid-template-columns:1fr}.driving-toolbar .view-switch button{text-align:left}.driving-card video{aspect-ratio:25/9}}
@media(max-width:540px){.token-types{font-size:6px}}

/* Readable labels throughout figures, controls, and result panels. */
.hero-takeaway{max-width:740px;margin:0 auto 22px;padding:20px 24px;border-left:4px solid var(--amber);background:#f5f9fb;text-align:left}
.hero-takeaway strong{display:block;color:var(--navy);font:800 clamp(19px,2vw,24px)/1.35 'Manrope',sans-serif;letter-spacing:-.025em}
.hero-takeaway p{margin:10px 0 0;color:#405c6d;font-size:17px;line-height:1.55}
.hero-dek{font-size:17px;line-height:1.6;color:#526b7b}
.hero-dek strong{display:block;margin-top:17px;color:var(--navy);font-weight:800}
.section-index{font-size:16px;letter-spacing:.08em}
.result-eyebrow,.demo-index{font-size:14px;letter-spacing:.1em}
.figure-topline{font-size:14px;line-height:1.45;letter-spacing:.06em}
.figure-topline .figure-kicker{font-size:18px;line-height:1.45}
.hero-figure>p,.paper-figure figcaption{font-size:15px;line-height:1.5;color:#546d7d}
.hero-figure-crop .image-zoom{padding:0}
.image-zoom>span{font-size:13px}
.supporting-figure summary{font-size:15px}
.route-explainer{grid-template-columns:350px minmax(0,1fr)}
.control-number{font-size:15px}
.control-heading strong{font-size:17px}
.control-heading small{font-size:14px;color:#536c7c}
.segment,.panel-tabs button,.view-switch button{font-size:14px}
.control-note{font-size:15px;color:#536b7c}
.stage-label{font-size:14px;letter-spacing:.07em}
.token-branch-label{font-size:14px}
.token-pills i{font-size:14px}
.token-types{font-size:11px}
.token-branch-loss{font-size:13px}
.architecture-signals .action-branch{font-size:14px}
.action-branch small{font-size:12px}
.diagram-input .diagram-small{font-size:12px}
.language-card{font-size:11px}
.diagram-arrow-second small{font-size:11px}
.gradient-back-label{font-size:14px}
.gradient-stop small{font-size:11px}
.route-stage .diagram-footnote{font-size:16px;color:#405d6e}
.method-point>span{font-size:15px}
.method-point h3{font-size:19px}
.method-point p{font-size:16px;color:#526b7b}
.result-copy>p:not(.result-eyebrow){font-size:16px}
.result-copy .detail-note{font-size:14px!important;color:#657a87!important}
.panel-heading{font-size:15px}
.panel-tag{font-size:12px}
.bar-meta{font-size:14px}
.manip-row{grid-template-columns:180px minmax(0,1fr) 53px;font-size:14px}
.manip-row strong{font-size:15px}
.manipulation-bars .mini-track i{transition:width .55s ease}
.progress-panel>p,.manipulation-panel>p{font-size:14px;color:#657b89;line-height:1.45}
.demo-heading p,.video-caption{font-size:15px}
.molmo-instruction strong{font-size:15px}
.molmo-score span{font-size:12px}
@media(max-width:1000px){.route-explainer{grid-template-columns:290px minmax(0,1fr)}.manip-row{grid-template-columns:150px minmax(0,1fr) 53px;font-size:13px}}
@media(max-width:760px){.route-explainer{grid-template-columns:1fr}.hero-dek{font-size:16px}.section-heading>p:last-child{font-size:16px}.demo-meta{display:inline-block;font-size:13px}.manip-row{grid-template-columns:180px minmax(0,1fr) 53px;font-size:14px}}
@media(max-width:540px){.hero-takeaway{padding:16px 18px}.hero-takeaway p{font-size:15px}.figure-topline .figure-kicker{font-size:16px}.route-stage{padding:22px 14px}.route-diagram{gap:4px}.architecture-signals .token-branch{padding:8px 3px}.architecture-signals .action-branch{min-height:125px;font-size:12px}.action-branch small{font-size:10px}.token-branch-label{font-size:11px}.token-pills i{font-size:11px;padding:2px 3px}.token-branch-loss{font-size:10px}.token-types{font-size:9px}.diagram-input,.diagram-vlm,.diagram-expert{height:135px}.diagram-input img{height:58px}.diagram-input .diagram-small{font-size:10px}.language-card{font-size:9px}.diagram-arrow-second small{width:48px;font-size:9px}.route-stage .diagram-footnote{font-size:15px}.gradient-back-label{font-size:12px}.gradient-stop small{font-size:10px}.manip-row{grid-template-columns:minmax(0,126px) minmax(0,1fr) 48px;gap:7px;font-size:12px}.manip-row strong{font-size:13px}.panel-heading{font-size:13px}.panel-tag{font-size:11px}.demo-meta{display:inline-block;font-size:12px}.method-point p{font-size:15px}}
.hero-takeaway{border-left:0;border-top:4px solid var(--amber);text-align:center}
.tldr-label{display:block;margin-bottom:10px;color:var(--blue);font:800 13px/1.2 'Manrope',sans-serif;letter-spacing:.14em}
.hero-figure>p,.paper-figure figcaption{text-align:center}