:root {
  --navy: #081f5c;
  --cobalt: #334eac;
  --blue: #7096d1;
  --sky: #bad6eb;
  --frost: #d0e3ff;
  --cream: #f7f2eb;
  --paper: #fff9f0;
  --ink: #10265b;
  --violet: #5a4fcf;
  --line: rgba(8,31,92,.18);
  --serif: 'Palatino Linotype', Palatino, Georgia, serif;
  --sans: 'Century Gothic', 'Avenir Next', Inter, Arial, sans-serif;
  --body: 'Times New Roman', Times, serif;
  --mono: 'DM Mono', ui-monospace, monospace;
  --shadow: 3px 3px 0 rgba(51,78,172,.15);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--paper); }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--body); font-size: 16px; line-height: 1.55; overflow-x: hidden; }
h1, h2, h3, h4, h5, h6 { font-family: var(--sans); }
body.intro-lock { overflow: hidden; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
img { max-width: 100%; display: block; }
.noise { display: none; }

.intro { min-height: 100svh; position: fixed; inset: 0; z-index: 50; color: var(--frost); background: radial-gradient(circle at 76% 18%, rgba(112,150,209,.33), transparent 33%), linear-gradient(135deg, #04143d, #081f5c 55%, #122b70); display: grid; place-items: center; overflow: hidden; transition: opacity .65s ease, visibility .65s ease; }
.intro.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.intro.hidden .scroll-cue { animation-play-state: paused; }
.intro.retired { display: none; }
.intro-grid { position: absolute; inset: -20%; opacity: .23; transform: rotate(-8deg); background-image: linear-gradient(rgba(186,214,235,.24) 1px, transparent 1px), linear-gradient(90deg, rgba(186,214,235,.24) 1px, transparent 1px); background-size: 54px 54px; mask-image: radial-gradient(ellipse at center, #000 30%, transparent 72%); }
.intro-grid:after { content: ''; position: absolute; inset: 30% 20%; border: 1px solid rgba(208,227,255,.38); border-radius: 50%; transform: rotate(28deg) scaleX(1.8); box-shadow: 0 0 0 34px rgba(208,227,255,.04), 0 0 0 68px rgba(208,227,255,.035); }
.intro-inner { width: min(1050px, 88vw); position: relative; z-index: 2; text-align: center; }
.intro-kicker { color: var(--sky); }
.eyebrow { margin: 0 0 14px; font-family: var(--sans); font-size: 11px; letter-spacing: .17em; line-height: 1.2; text-transform: uppercase; color: var(--cobalt); }
.section-ink .eyebrow, .section-dark .eyebrow, .intro .eyebrow { color: var(--sky); }
.intro h1 { margin: 22px 0 14px; color: var(--paper); font-size: clamp(2.6rem, 5.2vw, 5.2rem); letter-spacing: -.08em; line-height: .9; font-weight: 600; white-space: nowrap; text-shadow: 4px 4px 0 rgba(112,150,209,.26); }
.intro h1 em { color: var(--paper); font-style: normal; }
.intro-kicker { font-family: var(--sans); font-size: 12px; letter-spacing: .14em; }
.intro-subtitle { max-width: 700px; margin: 0 auto; color: var(--sky); font-family: var(--sans); font-size: clamp(1.2rem, 2.3vw, 1.65rem); font-weight: 500; }
.intro-stage { position: relative; min-height: min(42svh, 320px); margin: 44px auto 18px; display: grid; place-items: center; }
.intro-line, .intro-question { grid-area: 1/1; max-width: 780px; opacity: 0; transform: translateY(26px); transition: opacity .9s ease, transform .9s ease; font-family: var(--serif); font-size: clamp(1rem, 2vw, 1.38rem); line-height: 1.35; letter-spacing: -.01em; }
.intro-stage[data-stage="1"] .intro-line-a, .intro-stage[data-stage="2"] .intro-line-b { opacity: 1; transform: translateY(0); }
.intro-line-b { transition-delay: .05s; }
.todo-mark { display: inline-flex; align-items: center; margin-right: 10px; font-family: var(--mono); font-size: .7em; color: var(--sky); border: 1px solid rgba(186,214,235,.48); padding: 3px 6px; letter-spacing: .08em; }
.intro-question { color: var(--paper); font-family: var(--serif); font-size: clamp(1.45rem, 3vw, 2.35rem); font-style: normal; line-height: 1.2; }
.intro { background: #081F5C; }
.intro h1, .intro-subtitle, .intro-line { display: none; }
.intro-inner { width: min(1120px, 92vw); }
.intro-stage { position: relative; width: 100%; min-height: min(58svh, 510px); margin: 0; display: grid; place-items: center; }
.intro-slide { grid-area: 1/1; width: 100%; opacity: 0; pointer-events: none; transform: translateY(26px); transition: opacity .9s ease, transform .9s ease; }
.intro-question { max-width: none; color: var(--paper); font-size: clamp(2.2rem, 6.5vw, 5.8rem); line-height: .98; letter-spacing: -.06em; text-align: center; }
.intro-stage[data-stage="0"] .intro-question-initial, .intro-stage[data-stage="1"] .intro-comparison:nth-of-type(2), .intro-stage[data-stage="2"] .intro-comparison:nth-of-type(3), .intro-stage[data-stage="3"] .intro-question-repeat { opacity: 1; pointer-events: auto; transform: translateY(0); }
.intro-comparison { position: relative; top: -44px; width: 100%; margin-inline: auto; display: grid; grid-template-columns: minmax(150px, 220px) minmax(300px, 700px); justify-content: center; gap: clamp(18px, 2.2vw, 36px); align-items: center; }
.intro-comparison p { max-width: 700px; margin: 0; color: var(--paper); font: clamp(1.12rem, 1.6vw, 1.68rem)/1.24 var(--serif); text-align: left; }
.intro-comparison p strong { color: var(--sky); font-weight: 600; }
.vla-comparison p { font-size: clamp(1.35rem, 2.05vw, 2.2rem); }
.code-comparison p { font-size: clamp(1.35rem, 2.05vw, 2.2rem); }
.intro-vla-visual { display: grid; justify-items: center; align-content: center; gap: 8px; }
.intro-vla-visual strong { color: #fff; font: 600 clamp(1.05rem, 1.35vw, 1.35rem)/1.15 var(--serif); text-align: center; }
.intro-code-label { display: inline; }
.intro-vla-label { display: inline; }
.intro-pdf { display: block; width: min(100%, 220px); height: 180px; border: 0; background: transparent; object-fit: contain; justify-self: end; }
.intro-progress { position: absolute; left: 36px; bottom: 36px; display: flex; gap: 6px; }
.intro-progress span { display: block; width: 36px; height: 2px; background: rgba(186,214,235,.3); transition: background .3s ease; }
.intro-progress span.active { background: var(--paper); }
.scroll-cue { display: flex; bottom: -92px; }
.scroll-cue { position: absolute; left: 50%; bottom: -118px; transform: translateX(-50%); display: flex; align-items: center; gap: 10px; border: 0; padding: 0; background: transparent; color: var(--sky); font-family: var(--sans); font-size: 14px; letter-spacing: .14em; text-transform: uppercase; cursor: pointer; animation: float 1.5s ease-in-out infinite; }
.scroll-cue img { width: 39px; height: 39px; object-fit: contain; filter: drop-shadow(0 0 5px rgba(208,227,255,.95)) drop-shadow(0 0 15px rgba(112,150,209,.9)); }
.intro-progress { position: absolute; left: 36px; bottom: 36px; display: flex; gap: 6px; }
.intro-progress span { display: block; width: 36px; height: 2px; background: rgba(186,214,235,.3); transition: background .3s ease; }
.intro-progress span.active { background: var(--paper); }

.site-header { height: 74px; position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(22px, 5vw, 78px); background: rgba(255,249,240,.96); border-bottom: 1px solid rgba(8,31,92,.11); }
.brand { display: inline-flex; gap: 10px; align-items: center; color: var(--navy); font-family: var(--sans); font-size: 15px; font-weight: 600; letter-spacing: .18em; text-decoration: none; }
.brand-mark { width: 26px; height: 26px; display: block; object-fit: contain; filter: drop-shadow(2px 3px 0 rgba(8,31,92,.38)); }
.header-nav { display: flex; gap: clamp(14px, 2.8vw, 42px); font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: .1em; }
.header-nav a, .header-chip { text-decoration: none; transition: color .2s ease; }
.header-nav a:hover, .header-chip:hover { color: var(--blue); }
.header-chip { border-bottom: 1px solid var(--cobalt); padding: 5px 3px; font-size: 12px; }
.section-rail { position: fixed; left: 20px; top: 50%; z-index: 18; transform: translateY(-50%); display: flex; align-items: center; gap: 12px; }
.rail-bars { display: flex; flex-direction: column; gap: 5px; align-items: flex-start; }
.rail-bar { width: 18px; height: 7px; border: 0; border-radius: 999px; padding: 0; background: rgba(8,31,92,.2); transform-origin: left center; transition: width .22s ease, background .22s ease, transform .22s ease; cursor: pointer; }
.rail-bar.active { background: var(--cobalt); }
.rail-bar:hover { width: 44px; background: var(--cobalt); }
.section-rail.dark-context .rail-bar { background: rgba(186,214,235,.42); }
.section-rail.dark-context .rail-bar.active, .section-rail.dark-context .rail-bar:hover { background: var(--sky); }
.rail-preview { position: absolute; left: 48px; width: 327px; padding: 21px; background: rgba(255,249,240,.97); border: 1px solid var(--line); box-shadow: 12px 12px 0 rgba(51,78,172,.12); opacity: 0; transform: translateX(-12px); pointer-events: none; transition: opacity .2s, transform .2s; }
.rail-preview.randomization-card { width: 390px; }
.section-rail:hover .rail-preview { opacity: 1; transform: translateX(0); }
.rail-preview-kicker { display: block; margin-bottom: 12px; color: var(--cobalt); font: 15px var(--mono); letter-spacing: .15em; }
.rail-preview strong { display: block; color: var(--navy); font: 600 22px/1.15 var(--sans); text-transform: uppercase; }
.rail-preview p { margin: 6px 0 0; color: #48608d; font: 19px/1.35 var(--serif); }
.rail-preview p.randomization-caption { white-space: pre-line; font-size: 20px; line-height: 1.22; }

main { position: relative; z-index: 2; }
.section { --section-pad-x: clamp(22px, 8vw, 160px); --section-card-gap: clamp(24px, 6vw, 96px); position: relative; padding: clamp(80px, 10vw, 150px) var(--section-pad-x); overflow: hidden; }
@supports (content-visibility: auto) {
  main > .hero {
    content-visibility: auto;
    contain-intrinsic-size: auto 720px;
  }
  main > section:not(.hero) {
    content-visibility: auto;
    contain-intrinsic-size: auto 1200px;
  }
  main > .method-intro,
  main > .experiments-intro {
    contain-intrinsic-size: auto 1900px;
  }
}
.section-light { background: #f1f5f7; }
.section-paper { background: #f1f5f7; }
.section-blue { background: #f1f5f7; }
.section-exp { background: #E2EEFF; color: var(--ink); }
.section-ink { color: var(--paper); background: #081F5C; }
.section-dark { color: var(--paper); background: #081F5C; }
.section { isolation: isolate; }
.section::before { content: ""; position: absolute; top: clamp(10px, 1.35vw, 18px); bottom: clamp(10px, 1.35vw, 18px); left: 50%; width: min(calc(100% - var(--section-pad-x) - var(--section-pad-x) + var(--section-card-gap) + var(--section-card-gap)), calc(1080px + var(--section-card-gap) + var(--section-card-gap))); box-sizing: border-box; z-index: 0; border: 1px solid rgba(51,78,172,.12); border-radius: 48px; background: inherit; box-shadow: 0 12px 30px rgba(8,31,92,.065), inset 0 1px 0 rgba(255,255,255,.42); transform: translateX(-50%); pointer-events: none; }
.section > * { position: relative; z-index: 1; }
.intro-summary::before { display: none; }
.intro-summary .section-card-body { width: min(100%, 1080px); position: relative; isolation: isolate; margin: 0 auto; }
.intro-summary .section-card-body::before { content: ""; position: absolute; inset: -68px calc(0px - var(--section-card-gap)); z-index: 0; border: 1px solid rgba(51,78,172,.12); border-radius: 48px; background: #f1f5f7; box-shadow: 0 12px 30px rgba(8,31,92,.065), inset 0 1px 0 rgba(255,255,255,.42); pointer-events: none; }
.intro-summary .section-card-body > * { position: relative; z-index: 1; }
.section-caption { display: flex; align-items: center; gap: 22px; width: min(100%, 1080px); margin: 0 auto 66px; color: var(--cobalt); font: 600 clamp(2.15rem, 4vw, 3rem)/1 var(--sans); letter-spacing: .12em; text-align: center; text-shadow: 3px 4px 0 rgba(51,78,172,.22), 0 8px 20px rgba(8,31,92,.18); }
.section-caption:before, .section-caption:after { content: ''; flex: 1; height: 1px; background: var(--cobalt); box-shadow: 0 4px 0 rgba(51,78,172,.16); }
.section-caption-light { color: var(--sky); text-shadow: 3px 4px 0 rgba(8,31,92,.34), 0 8px 22px rgba(8,31,92,.38); }
.section-caption-light:before, .section-caption-light:after { background: var(--sky); box-shadow: 0 4px 0 rgba(186,214,235,.18); }
.section-heading, .summary-grid, .method-grid, .task-overview, .experiment-setup-grid, .experiment-task-groups, .zero-grid, .finetune-layout, .frontier-wrap, .ablation-layout, .resource-grid, .demo-chart, .figure-card { width: min(100%, 1080px); margin-left: auto; margin-right: auto; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 50px; margin-bottom: 60px; }
.section-heading h2, .summary-lede h2, .resource-grid h2 { margin: 0; color: inherit; font-size: clamp(1.8rem, 3.1vw, 3.1rem); line-height: .98; letter-spacing: -.06em; font-weight: 600; text-shadow: var(--shadow); }
.section-heading h2 strong { color: var(--cobalt); }
.section-note { width: min(330px, 34%); margin: 0; color: rgba(255,249,240,.7); font-family: var(--serif); font-size: 1.05rem; line-height: 1.36; }
.section-light .section-note, .section-paper .section-note, .section-blue .section-note { color: #526b98; }
.section-heading.compact { align-items: flex-start; margin-bottom: 35px; }
.section-heading.compact h2 { font-size: clamp(1.6rem, 2.7vw, 2.8rem); }
.section-heading.stack-note { display: block; }
.section-heading.stack-note .section-note { width: min(100%, 620px); margin-top: 18px; color: #687b96; }
.hero { min-height: min(720px, calc(100svh - 74px)); display: grid; align-items: end; padding-top: 100px; isolation: isolate; background: transparent; }
.hero::before { content: ''; position: absolute; inset: 0; z-index: 0; background: #081F5C; pointer-events: none; }
.hero::after { content: ''; position: absolute; inset: -20%; z-index: 2; opacity: .32; transform: rotate(-8deg); background-image: linear-gradient(rgba(186,214,235,.34) 1px, transparent 1px), linear-gradient(90deg, rgba(186,214,235,.34) 1px, transparent 1px); background-size: 54px 54px; -webkit-mask-image: radial-gradient(ellipse at center, #000 34%, transparent 78%); mask-image: radial-gradient(ellipse at center, #000 34%, transparent 78%); pointer-events: none; }
.hero-wash { display: none; }
.hero-backdrop { position: absolute; inset: 0; z-index: 1; display: grid; place-items: center; pointer-events: none; }
.hero-backdrop::after { content: ''; position: absolute; inset: 0; z-index: 2; background: rgba(8,31,92,.30); pointer-events: none; }
.hero-backdrop-pdf { position: relative; z-index: 1; width: 100%; height: 100%; display: block; border: 0; background: transparent; opacity: .20; }
.hero-backdrop-pdf img { width: 100%; height: 100%; object-fit: contain; object-position: center; }
.hero-institution-logos { display: flex; align-items: center; justify-content: flex-start; gap: 0; width: fit-content; min-height: 56px; margin: 10px 0 11px; padding: 0; border: 0; background: transparent; box-shadow: none; }
.institution-logo { display: block; flex: none; object-fit: contain; filter: brightness(0) invert(1) drop-shadow(0 2px 4px rgba(0,0,0,.22)); opacity: .9; }
.institution-logo + .institution-logo { margin-left: -15px; }
.institution-logo-school { width: 52px; height: 52px; }
.institution-logo-ai-lab { width: 145px; height: 54px; }
.hero-content { position: relative; z-index: 3; width: min(100%, 1080px); margin: 0 auto; padding-bottom: 60px; }
.hero h2 { margin: 0 0 20px; color: var(--paper); font-size: clamp(2.6rem, 5.1vw, 5.3rem); letter-spacing: -.09em; line-height: .88; font-weight: 600; white-space: nowrap; text-shadow: 3px 4px 0 rgba(112,150,209,.26); }
.hero .eyebrow { font-size: 28px; }
.hero-dot { color: var(--paper); }
.hero-deck { max-width: 700px; margin: 0 0 24px; color: var(--frost); font: 400 1.52rem/1.3 var(--sans); }
.author-list { max-width: 940px; display: flex; flex-wrap: wrap; gap: 4px 8px; align-items: center; margin-top: 38px; color: var(--sky); font: 1.12rem/1.45 var(--body); }
.author-entry { display: inline-flex; align-items: flex-start; gap: 2px; white-space: nowrap; }
.author-list a { text-decoration: none; border-bottom: 1px solid transparent; }
.author-list a:hover { border-color: var(--sky); }
.author-plain { color: var(--sky); }
.author-list sup { position: relative; top: -.28em; color: var(--paper); font-family: var(--mono); font-size: .68em; font-weight: 700; line-height: 1; }
.affiliations { margin: 12px 0 4px; color: rgba(208,227,255,.78); font: 1.12rem/1.45 var(--body); }
.author-notes { margin: 0; color: rgba(208,227,255,.64); font: 1.12rem/1.45 var(--body); }
.overview-project-links { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 20px; width: min(100%, 920px); margin: clamp(34px, 4vw, 58px) auto 0; color: var(--navy); font: 500 clamp(1.45rem, 2.15vw, 2rem)/1.2 var(--sans); letter-spacing: .055em; }
.overview-project-links a { color: inherit; text-decoration: none; text-underline-offset: 7px; text-decoration-thickness: 1px; }
.overview-project-links a:hover { color: var(--cobalt); text-decoration: underline; }
.overview-project-links i { color: inherit; font-style: normal; font-weight: 400; }
.summary-grid { display: block; }
.summary-lede h2 { color: var(--navy); }
.serif-lede { color: #3e5787; font: 1.3rem/1.35 var(--serif); }
.abstract-card { width: min(100%, 700px); margin: 0 auto; padding: 0; color: var(--ink); text-align: left; background: transparent; border: 0; box-shadow: none; }
.overview-tldr { width: min(100%, 920px); margin: clamp(30px, 3.5vw, 48px) auto clamp(56px, 7vw, 96px); color: #7b8496; font: clamp(1.22rem, 1.55vw, 1.45rem)/1.5 var(--body); text-align: center; }
.overview-tldr strong { color: var(--navy); font-family: var(--sans); font-weight: 700; }
.overview-tldr em { font-style: italic; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.overview-video { width: min(100%, 920px); margin: 0 auto clamp(120px, 13vw, 190px); overflow: hidden; border: 4px solid rgba(8,31,92,.58); border-radius: 16px; background: #081F5C; box-shadow: 8px 8px 0 rgba(51,78,172,.18), 0 16px 36px rgba(8,31,92,.22); scroll-margin-top: 100px; }
.overview-video video { display: block; width: 100%; aspect-ratio: 16 / 9; background: #081F5C; object-fit: contain; }
.abstract-card p:not(.eyebrow) { margin: 0; font-size: 1.06rem; line-height: 1.7; }
.abstract-card .eyebrow, .summary-lede > .eyebrow { margin-bottom: 20px; font: 600 1.55rem var(--sans); letter-spacing: .16em; text-align: center; }
.metric-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 30px; padding-top: 20px; border-top: 1px solid rgba(8,31,92,.18); }
.metric-strip span { display: grid; gap: 2px; }
.metric-strip strong { color: var(--cobalt); font: 600 2.85rem/1 var(--mono); text-shadow: 3px 3px 0 rgba(51,78,172,.18); }
.metric-strip small { color: #526b98; font: 14px/1.3 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.figure-card { margin-top: 62px; }
.figure-card img { width: 100%; max-height: 610px; object-fit: contain; background: transparent; border: 1px solid rgba(8,31,92,.15); border-radius: 13px; }
.teaser-figure img { border: 0; border-radius: 0; }
.figure-card figcaption { max-width: 760px; margin-top: 14px; color: #536b96; font: 14px/1.45 var(--serif); }
.teaser-figure figcaption { max-width: 920px; margin: 18px auto 0; text-align: center; font-size: 1.18rem; line-height: 1.45; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.section-ink .figure-card img { background: transparent; }
.section-exp .section-caption:before, .section-exp .section-caption:after, .method-intro .section-caption:before, .method-intro .section-caption:after { background: var(--cobalt); box-shadow: 0 4px 0 rgba(51,78,172,.16); }
.section-exp .section-caption, .method-intro .section-caption { color: var(--cobalt); }
.method-intro .section-note, .section-exp .section-note { color: #687b96; }
.method-figure { margin-top: 0; margin-bottom: 42px; }
.method-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 13px; }
.method-card { min-height: 230px; position: relative; display: grid; grid-template-columns: 52px 1fr; gap: 14px; padding: 24px; color: var(--ink); background: rgba(255,249,240,.68); border: 1px solid rgba(51,78,172,.2); box-shadow: 6px 6px 0 rgba(51,78,172,.08); transition: background .25s, transform .25s; }
.method-card:hover { background: rgba(255,255,255,.9); transform: translateY(-4px); }
.method-index { color: var(--cobalt); font: 13px var(--mono); }
.method-card h3 { margin: 0 0 10px; font-size: 1.25rem; letter-spacing: -.03em; }
.method-card p { max-width: 390px; margin: 0; color: #526b98; font: 1.02rem/1.45 var(--serif); }
.method-card-grounding p strong { color: var(--navy); font-weight: 700; }
.method-card-formula { max-width: 100%; margin: 10px 0 13px; padding: 8px 10px; overflow-x: auto; border-left: 2px solid rgba(51,78,172,.42); color: var(--navy); background: rgba(208,227,255,.36); }
.method-card-formula math { width: max-content; min-width: 100%; margin: 0; color: inherit; font-size: .94rem; text-align: left; }
.method-icon { position: absolute; right: 22px; bottom: 22px; width: 84px; height: 70px; opacity: .66; }
.icon-frame span, .icon-frame i, .icon-frame b { position: absolute; display: block; border: 1px solid var(--sky); }
.icon-frame span { width: 20px; height: 20px; left: 31px; top: 26px; border-radius: 50%; }
.icon-frame i { width: 60px; height: 1px; top: 35px; left: 3px; transform: rotate(-28deg); }
.icon-frame b { width: 1px; height: 58px; top: 5px; left: 42px; transform: rotate(32deg); }
.icon-robot:before, .icon-robot:after { content: ''; position: absolute; border: 1px solid var(--sky); }
.icon-robot:before { width: 38px; height: 25px; top: 26px; left: 14px; transform: skew(-16deg); }
.icon-robot:after { width: 15px; height: 15px; top: 7px; left: 48px; border-radius: 50%; }
.icon-robot span { position: absolute; width: 49px; height: 1px; top: 43px; left: 0; background: var(--sky); transform: rotate(28deg); }
.icon-robot i { position: absolute; width: 1px; height: 31px; top: 38px; left: 20px; background: var(--sky); transform: rotate(-33deg); }
.action-code { grid-column: 2; align-self: end; max-width: 100%; margin-top: 20px; overflow-x: auto; color: var(--cobalt); font: 15px/1.8 var(--mono); opacity: .86; }
.action-code-line { white-space: nowrap; }
.action-code .action-large { font-size: 15px; font-weight: 600; }
.action-code .action-gripper, .action-code i { font-size: 15px; }
.action-code em { font-size: 10px; }
.action-code em { color: #526b98; font-family: var(--sans); font-style: normal; }
.action-code i { color: #526b98; font-style: normal; }
.grammar-formula { margin-bottom: 0; }
.grammar-formula math { font-size: .88rem; }
.training-formula { margin-bottom: 0; }
.training-formula math { font-size: .9rem; }
.experiment-setup-grid { display: grid; grid-template-columns: minmax(280px, .72fr) minmax(0, 1.28fr); gap: clamp(32px, 5vw, 68px); align-items: center; margin-bottom: 58px; }
.experiment-setup-figure { margin: 0; }
.experiment-setup-figure img { width: 100%; height: auto; max-height: 390px; object-fit: contain; background: transparent; }
.experiment-setup-figure figcaption { margin-top: 12px; color: var(--navy); font: 1.05rem/1.4 var(--body); text-align: center; }
.experiment-setup-copy > .eyebrow, .experiment-setup-copy h2 { text-align: center; }
.experiment-setup-copy h2 { margin: 0 0 22px; color: var(--navy); font-size: clamp(2rem, 3.5vw, 3.4rem); line-height: 1; letter-spacing: -.055em; text-shadow: var(--shadow); }
.experiment-setup-copy > p:not(.eyebrow) { margin: 0; color: #334d7e; font: 1.06rem/1.68 var(--body); }
.experiment-setup-copy > p:not(.eyebrow) + p { margin-top: 14px; }
.experiment-task-groups { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: 22px; align-items: start; }
.experiment-task-panel { min-width: 0; }
.experiment-task-panel h3 { min-height: 52px; display: grid; place-items: center; margin: 0; padding: 0 10px 14px; color: var(--navy); font: 600 1.16rem/1.3 var(--sans); text-align: center; }
.experiment-task-table { width: 100%; border-collapse: collapse; table-layout: fixed; color: var(--ink); background: rgba(255,255,255,.18); border-top: 2px solid rgba(8,31,92,.68); border-bottom: 2px solid rgba(8,31,92,.68); }
.experiment-task-table th, .experiment-task-table td { padding: 10px 5px; border-bottom: 1px solid rgba(51,78,172,.22); vertical-align: middle; }
.experiment-task-table thead th { color: var(--navy); background: rgba(208,227,255,.44); font: 600 13px/1.22 var(--sans); letter-spacing: .015em; text-align: center; }
.experiment-task-table tbody th { width: 21%; color: var(--navy); font: 600 14px/1.22 var(--sans); text-align: center; }
.experiment-task-table tbody td { color: #334d7e; font: 15px/1.25 var(--body); }
.experiment-task-table .task-code { color: var(--cobalt); font-family: var(--mono); font-size: 13px; text-align: center; white-space: nowrap; }
.experiment-task-table tbody tr:last-child > * { border-bottom: 0; }
.experiment-task-panel-one .experiment-task-table th:first-child { width: 20%; }
.experiment-task-panel-one .experiment-task-table th:nth-child(2) { width: 17%; }
.experiment-task-panel-two .experiment-task-table th:first-child { width: 19%; }
.experiment-task-panel-two .experiment-task-table th:nth-child(2) { width: 14%; }
.experiment-task-caption { grid-column: 1 / -1; margin: 8px 0 0; color: #526b98; font: 17px/1.45 var(--body); text-align: center; }
.task-overview { display: grid; grid-template-columns: 1fr 1px 1fr; gap: 50px; padding: 38px; border: 1px solid rgba(51,78,172,.18); background: rgba(208,227,255,.45); }
.task-divider { background: rgba(51,78,172,.35); }
.group-kicker { display: block; color: var(--cobalt); font: 11px var(--mono); letter-spacing: .14em; }
.task-group h3 { margin: 8px 0 15px; color: var(--navy); font-size: 1.5rem; }
.task-group p { margin: 15px 0 0; color: #526b98; font-family: var(--serif); }
.task-pills { display: flex; flex-wrap: wrap; gap: 7px; }
.task-pills span { padding: 5px 9px; border: 1px solid rgba(51,78,172,.25); color: var(--cobalt); font: 11px var(--mono); }
.task-group-accent { padding-left: 7px; }
.zero-grid { display: grid; grid-template-columns: minmax(160px, .28fr) 1fr; gap: 28px; align-items: start; }
.task-type-list { display: grid; gap: 7px; }
.task-type { padding: 21px 17px; border: 1px solid rgba(51,78,172,.28); border-left: 3px solid transparent; color: var(--ink); background: rgba(255,249,240,.58); text-align: left; cursor: pointer; font: 600 21px var(--sans); transition: .2s ease; }
.task-type small { display: block; margin-top: 6px; color: #526b98; font: 500 14px var(--sans); }
.zero-shot .section-heading h2 { white-space: nowrap; }
.task-type.active, .task-type:hover { border-left-color: var(--cobalt); background: var(--paper); transform: translateX(5px); }
.zero-status-card { width: max-content; max-width: 100%; margin: 14px auto 0; padding: 0; border: 0; background: transparent; text-align: center; }
.zero-shot-title-row { display: flex; align-items: center; gap: clamp(14px, 1.8vw, 22px); }
.zero-shot-title-icon { width: clamp(48px, 5vw, 66px); height: clamp(48px, 5vw, 66px); flex: 0 0 auto; object-fit: contain; filter: drop-shadow(3px 4px 0 rgba(51,78,172,.14)); }
.video-shell { padding: 14px; background: rgba(255,249,240,.62); border: 1px solid rgba(51,78,172,.25); }
.video-topline { display: flex; justify-content: space-between; color: var(--cobalt); font: 10px var(--mono); letter-spacing: .08em; }
.video-status { color: #7890b4; }
.zero-video { display: block; width: 100%; min-height: 315px; max-height: 510px; margin-top: 11px; border: 1px solid rgba(51,78,172,.28); background: #081F5C; object-fit: contain; }
.zero-video[hidden] { display: none; }
.video-placeholder { min-height: 315px; display: grid; place-items: center; align-content: center; gap: 9px; margin-top: 11px; background: linear-gradient(145deg, rgba(8,31,92,.06), rgba(112,150,209,.18)); border: 1px dashed rgba(51,78,172,.45); color: #506a97; text-align: center; }
.video-placeholder[hidden] { display: none; }
.video-placeholder p { margin: 0; font-family: var(--serif); }.video-placeholder small { font: 11px var(--mono); }
.play-orbit { width: 52px; height: 52px; display: grid; place-items: center; border: 1px solid var(--cobalt); border-radius: 50%; color: var(--cobalt); font-size: 13px; box-shadow: 0 0 0 10px rgba(112,150,209,.12), 0 0 0 20px rgba(112,150,209,.06); }
.video-switcher { display: flex; gap: 6px; margin-top: 12px; }
.video-switcher button, .task-index, .cross-table button { border: 0; background: none; color: var(--cobalt); cursor: pointer; }
.video-switcher button { padding: 6px 10px; font: 14px var(--sans); border-bottom: 1px solid transparent; }
.video-switcher button.active, .video-switcher button:hover { border-bottom-color: var(--cobalt); background: rgba(208,227,255,.8); }
.task-description { padding: 16px 0 0; text-align: center; }.task-description p { margin: 0 0 9px; color: var(--navy); font: 1.28rem var(--body); }
.success-pill { display: inline-block; color: #687b96; font: 600 14px var(--sans); letter-spacing: .04em; text-decoration: underline; text-underline-offset: 4px; }
.demo-section { background: #E2EEFF; }
.demo-section .demo-question { margin: 0; color: #61738f; font: 400 clamp(1.45rem, 2.3vw, 2rem)/1.35 var(--body); letter-spacing: normal; text-shadow: none; }
.demo-chart { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) 220px; gap: 24px; min-height: 430px; padding: 24px 22px 18px; background: rgba(208,227,255,.48); border: 1px solid rgba(51,78,172,.2); }
.chart-area { position: relative; min-width: 0; }
.chart-series-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 22px; min-height: 28px; color: #425f91; font: 600 13px var(--sans); }
.chart-series-legend span { display: inline-flex; gap: 7px; align-items: center; white-space: nowrap; }
.chart-series-legend i { width: 24px; height: 3px; border-radius: 999px; background: var(--series); }
.trajectory-chart { display: block; width: 100%; height: auto; overflow: visible; }
.demo-grid-lines line { stroke: rgba(51,78,172,.23); stroke-width: 1; stroke-dasharray: 5 7; }
.demo-grid-lines text { fill: #526b98; font: 600 15px var(--mono); text-anchor: end; }
.demo-x-guides line { stroke: rgba(51,78,172,.1); stroke-width: 1; }
.demo-axis-title { color: #526b98; font: 700 13px var(--sans); letter-spacing: .08em; }
.demo-axis-title-y { fill: #526b98; text-anchor: middle; }
.easg-reference { stroke: var(--navy); stroke-width: 2.2; stroke-dasharray: 8 6; opacity: .72; }
.easg-reference-label { fill: var(--navy); font: 700 12px var(--sans); text-anchor: end; paint-order: stroke; stroke: #e2eeff; stroke-width: 5px; stroke-linejoin: round; }
.demo-inline-number { font-family: var(--mono); }
.demo-segment { stroke: var(--series-color); stroke-width: 2.25; stroke-linecap: round; opacity: 0; transition: opacity .25s ease; }
.demo-segment.is-visible { opacity: 1; }
.demo-point { fill: var(--series-color); stroke: #edf5ff; stroke-width: 2.5; opacity: 0; transform-box: fill-box; transform-origin: center; transform: scale(.2); transition: opacity .24s ease, transform .3s cubic-bezier(.2,.9,.2,1.35); }
.demo-point.is-visible { opacity: 1; transform: scale(1); }
.demo-point.is-selected { stroke-width: 3.5; transform: scale(1.32); filter: drop-shadow(0 0 5px rgba(255,255,255,.95)); }
.chart-x { display: grid; grid-template-columns: repeat(5, 1fr); align-items: end; margin-top: -8px; }
.chart-x button { position: relative; display: grid; min-height: 63px; place-items: end center; padding: 28px 4px 2px; border: 0; background: transparent; color: var(--cobalt); cursor: pointer; font: 700 17px var(--mono); }
.x-value { min-width: 46px; padding: 5px 8px; border-radius: 10px; transition: color .2s, background .2s, box-shadow .2s; }
.chart-x button:hover .x-value, .chart-x button.active .x-value { color: #fff; background: var(--cobalt); box-shadow: 0 0 0 5px rgba(51,78,172,.14); }
.chart-x button[data-demo="30"].active .x-value { color: var(--navy); background: #fff; box-shadow: 0 0 0 5px rgba(255,255,255,.55), 0 0 22px rgba(255,255,255,.95); }
.chart-select-indicator { position: absolute; left: 50%; bottom: 34px; display: none; flex-direction: column; align-items: center; color: var(--navy); transform: translateX(-50%); pointer-events: none; }
.chart-x button.active .chart-select-indicator { display: flex; animation: select-nudge 1.3s ease-in-out infinite; }
.chart-select-indicator b { font: 700 12px var(--sans); letter-spacing: .06em; }
.chart-select-indicator svg { width: 25px; height: 28px; margin-top: -1px; overflow: visible; }
.chart-select-indicator path { fill: none; stroke: currentColor; stroke-width: 3.4; stroke-linecap: round; stroke-linejoin: round; }
@keyframes select-nudge { 0%,100% { transform: translate(-50%, -2px); } 50% { transform: translate(-50%, 3px); } }
.chart-axis-title-x { margin-top: 8px; text-align: center; }
.chart-readout { display: flex; flex-direction: column; align-items: flex-start; justify-content: center; border-left: 1px solid rgba(51,78,172,.2); padding-left: 22px; }
.chart-readout > span { color: #526b98; font: 700 13px var(--sans); letter-spacing: .06em; }
.chart-readout > strong { margin: 3px 0 17px; color: var(--navy); font: 800 3.25rem/1 var(--mono); text-shadow: 3px 3px 0 rgba(112,150,209,.26); }
.demo-score-list { display: grid; width: 100%; gap: 9px; }
.demo-score-row { display: grid; grid-template-columns: 9px minmax(0, 1fr) auto; gap: 7px; align-items: center; color: #526b98; font: 600 12px/1.15 var(--sans); }
.demo-score-row i { width: 9px; height: 9px; border-radius: 50%; background: var(--series-color); }
.demo-score-row b { color: var(--navy); font: 800 12px/1.15 var(--mono); }
.finding-box { width: min(100%, 1080px); display: grid; grid-template-columns: 5px 1fr; gap: 15px; margin: 32px auto 0; padding: 16px 18px; border: 1px solid transparent; background: transparent; transition: box-shadow .25s ease, transform .25s ease; }.finding-box:hover { background: transparent; box-shadow: 8px 8px 0 rgba(51,78,172,.13); transform: translateY(-2px); }.finding-bar { display: block; background: var(--cobalt); }.finding-box p { margin: 0; color: #526b98; font: 1.12rem/1.4 var(--body); }.finding-box b { color: var(--navy); font-size: 1.06em; }
.randomization-section { background: #E2EEFF; }
.randomization-section .section-heading { text-align: center; }
.randomization-section .section-heading > div { width: 100%; }
.randomization-section .section-heading h2 { white-space: nowrap; }
.randomization-section .randomization-note { width: min(100%, 780px); margin: 30px auto 0; font-size: 1.05rem; line-height: 1.36; text-align: center; }
.randomization-panel { width: min(100%, 1080px); margin: 0 auto; }
.randomization-task-tabs { display: grid; grid-template-columns: repeat(6, minmax(145px, 1fr)); gap: 6px; overflow-x: auto; padding: 4px 4px 12px; scrollbar-width: thin; }
.randomization-task-tabs button { display: grid; place-items: center; min-height: 52px; padding: 5px 10px; border: 1px solid rgba(51,78,172,.2); border-radius: 10px; color: #526b98; background: rgba(255,255,255,.22); cursor: pointer; transition: color .2s, background .2s, border-color .2s, transform .2s, box-shadow .2s; }
.randomization-task-tabs button span { font: 400 clamp(1.05rem, 1.35vw, 1.3rem)/1 var(--sans); letter-spacing: .015em; }
.randomization-task-tabs button:hover { color: var(--navy); border-color: rgba(51,78,172,.4); transform: translateY(-2px); }
.randomization-task-tabs button.active { color: #fff; border-color: var(--cobalt); background: var(--cobalt); box-shadow: 0 0 0 4px rgba(51,78,172,.12); }
.randomization-source-scroll { overflow-x: auto; scrollbar-width: thin; }
.randomization-source { position: relative; min-width: 860px; overflow: hidden; border: 0; background: transparent; }
.randomization-source img { display: block; width: 100%; height: auto; }
.randomization-pdf-frame { width: 100%; aspect-ratio: 640.307 / 236.014; overflow: hidden; background: transparent; }
.randomization-pdf { display: block; width: 100%; height: 100%; border: 0; background: transparent; pointer-events: none; }
.randomization-column-map { position: absolute; inset: 0 .15%; display: grid; grid-template-columns: repeat(6, 1fr); }
.randomization-column-map button { border: 0; border-left: 1px solid rgba(51,78,172,.08); background: rgba(226,238,255,.55); cursor: pointer; transition: background .22s, box-shadow .22s; }
.randomization-column-map button:last-child { border-right: 1px solid rgba(51,78,172,.08); }
.randomization-column-map button:hover { background: rgba(226,238,255,.28); }
.randomization-column-map button.active { z-index: 1; background: transparent; box-shadow: inset 0 0 0 3px var(--cobalt), 0 0 20px rgba(51,78,172,.2); }
.randomization-video-window { width: min(100%, 1080px); margin: 28px auto 0; overflow: hidden; border: 1px solid rgba(51,78,172,.25); border-radius: 14px; background: rgba(255,255,255,.22); box-shadow: 8px 8px 0 rgba(51,78,172,.08); }
.randomization-video-caption { display: flex; align-items: center; justify-content: center; gap: 18px; padding: 12px 16px; border-bottom: 1px solid rgba(51,78,172,.18); color: var(--navy); background: rgba(255,255,255,.35); text-align: center; }
.randomization-video-caption strong { font: 600 14px/1.2 var(--sans); }
.randomization-video-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; padding: 10px; background: rgba(8,31,92,.08); }
.randomization-video-card { position: relative; min-width: 0; overflow: hidden; border-radius: 8px; background: #081F5C; }
.randomization-video-card:last-child:nth-child(odd) { grid-column: 1 / -1; width: calc(50% - 6px); justify-self: center; }
.randomization-video-card > span { position: absolute; z-index: 1; top: 8px; left: 9px; padding: 4px 7px; border-radius: 999px; color: #fff; background: rgba(8,31,92,.72); font: 700 10px/1 var(--mono); letter-spacing: .08em; pointer-events: none; }
.randomization-video { display: block; width: 100%; aspect-ratio: 3 / 1; border: 0; background: #081F5C; object-fit: contain; }
.libero-figure-caption { width: min(100%, 620px); margin: 8px auto 0; color: #687b96; font: 1.05rem/1.42 var(--serif); text-align: center; }
.libero-grid { width: min(100%, 980px); margin: 0 auto; display: grid; grid-template-columns: 1.2fr .8fr; gap: 55px; align-items: center; }
.radar-wrap { position: relative; }
.radar { width: 100%; overflow: visible; }
.radar-skeleton circle, .radar-skeleton line { fill: none; stroke: rgba(8,31,92,.24); stroke-width: 1; }
.radar-labels text { fill: #526b98; font: 10px var(--sans); letter-spacing: .08em; }
.radar-values { opacity: 0; transition: opacity .25s; }
.radar-values text { fill: currentColor; font: 600 9px var(--mono); paint-order: stroke; stroke: #e2eeff; stroke-width: 3px; stroke-linejoin: round; }
.radar-values circle { fill: currentColor; stroke: #e2eeff; stroke-width: 1.8; }
.radar-values-ours { color: #5DB3AE; }
.radar-values-pi { color: #F09137; }
.radar-values-octo { color: #D5A2D9; }
.radar-values-openvla { color: #497DB0; }
.radar-values.visible { opacity: 1; }
.radar-data { fill-opacity: .24; stroke-width: 1.8; stroke-linejoin: round; transition: opacity .25s; }
.radar-ours { fill: #5DB3AE; stroke: #5DB3AE; }
.radar-pi { fill: #F09137; stroke: #F09137; }
.radar-octo { fill: #D5A2D9; stroke: #D5A2D9; }
.radar-openvla { fill: #497DB0; stroke: #497DB0; }
.radar-data:not(.visible) { opacity: 0; }
.radar-data.visible { opacity: 1; }
.method-toggles { display: grid; gap: 10px; }.method-toggle-label { margin: 0 0 1px; color: var(--cobalt); font: 600 1.45rem/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; }.method-toggle { display: grid; grid-template-columns: 12px 1fr; gap: 10px; align-items: center; padding: 14px; border: 1px solid rgba(51,78,172,.2); color: var(--ink); background: rgba(255,249,240,.55); text-align: left; cursor: pointer; }.method-toggle:hover, .method-toggle.active { background: rgba(255,255,255,.92); box-shadow: 5px 5px 0 rgba(51,78,172,.1); }.method-toggle strong { display: block; color: var(--navy); font: 600 1.05rem/1.2 var(--sans); }.method-toggle[data-method="ours"] strong { color: var(--blue); font-weight: 700; }.method-toggle small { display: block; grid-column: 2; color: #526b98; font: 11px var(--mono); }.legend-dot { width: 9px; height: 9px; display: block; border-radius: 50%; }.legend-dot.ours { background: #5DB3AE; }.legend-dot.pi { background: #F09137; }.legend-dot.octo { background: #D5A2D9; }.legend-dot.openvla { background: #497DB0; }
.finetune-layout { display: grid; grid-template-columns: 1.18fr .82fr; gap: 50px; align-items: start; }.line-figure { margin: 0; }.line-figure img { max-height: 415px; }.finetune-chart { margin-bottom: 22px; padding: 14px 14px 10px; background: rgba(208,227,255,.48); border: 1px solid rgba(51,78,172,.2); border-radius: 12px; }.finetune-chart svg { width: 100%; height: auto; overflow: visible; }.chart-grid line { stroke: rgba(51,78,172,.17); stroke-dasharray: 3 5; }.chart-y-labels text, .chart-task-labels text { fill: #526b98; font: 10px var(--mono); }.chart-task-labels text { font-size: 9px; }.chart-series { fill: none; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }.chart-series-ours { stroke: var(--cobalt); }.chart-series-base { stroke: var(--blue); stroke-dasharray: 7 6; }.chart-dots circle { stroke: var(--paper); stroke-width: 2; }.ours-dots circle { fill: var(--cobalt); }.base-dots circle { fill: var(--blue); }.chart-key { display: flex; gap: 17px; margin: 4px 0 0 32px; color: #526b98; font: 10px var(--mono); }.chart-key i { display: inline-block; width: 17px; height: 2px; margin: 0 5px 3px 0; background: var(--cobalt); }.chart-key .key-base { background: var(--blue); }.task-index-panel { padding-top: 8px; }.task-index-list { display: grid; gap: 6px; }.task-index { display: grid; grid-template-columns: 74px 1fr; gap: 12px; align-items: baseline; padding: 9px 0; border-bottom: 1px solid rgba(51,78,172,.16); text-align: left; }.task-index b { color: var(--cobalt); font: 1.25rem var(--mono); }.task-index span { color: #526b98; font: 14px/1.3 var(--serif); }.task-index.active b, .task-index:hover b { color: var(--navy); text-shadow: 2px 2px 0 var(--sky); }.expand-panel { display: none; margin: 34px auto 0; width: min(100%, 1080px); }.expand-panel.open { display: block; animation: reveal .4s ease; }.video-placeholder.wide { min-height: 260px; position: relative; }.placeholder-label { position: absolute; top: 14px; left: 14px; color: var(--cobalt); font: 10px var(--mono); letter-spacing: .1em; }
.finetune-stack { width: min(100%, 1080px); margin: 0 auto; }.finetune-stack .finetune-chart { margin-bottom: 24px; }.finetune-task-strip { display: grid; grid-template-columns: repeat(6, 1fr); gap: 9px; }.finetune-task-strip .task-index { display: grid; grid-template-columns: 1fr; gap: 7px; min-height: 165px; padding: 11px; border: 1px solid rgba(51,78,172,.2); background: rgba(255,249,240,.55); text-align: left; cursor: pointer; }.finetune-task-strip .task-index b { font: 600 1.45rem var(--sans); }.finetune-task-strip .task-index em { color: #526b98; font: 13px/1.3 var(--body); font-style: normal; }.finetune-task-strip .task-index.active, .finetune-task-strip .task-index:hover { background: rgba(255,255,255,.95); box-shadow: 5px 5px 0 rgba(51,78,172,.12); }.task-thumb { display: grid; min-height: 70px; place-items: center; overflow: hidden; border: 1px dashed rgba(51,78,172,.4); background: rgba(208,227,255,.64); color: #526b98; font: 9px var(--sans); letter-spacing: .12em; text-transform: uppercase; }.task-thumb img { width: 100%; height: 100%; min-height: 70px; object-fit: cover; opacity: .88; }.expand-caption { margin-bottom: 10px; color: var(--navy); text-align: center; font: 1.22rem var(--body); }.video-placeholder.wide { min-height: 260px; position: relative; }
/* Real Task Group 2 scene thumbnails. */
.finetune-chart .chart-grid line { stroke: rgba(51,78,172,.14); stroke-dasharray: 3 4; }
.finetune-chart .chart-y-labels text, .finetune-chart .chart-task-labels text { fill: var(--navy); font: 600 12px/1 var(--sans); }
.finetune-chart .chart-axis-y { fill: var(--navy); font: 600 13px/1 var(--sans); }
.finetune-chart .chart-series { stroke-width: 2.4; }
.finetune-chart .chart-series-ours { stroke: #5DB3AE; }
.finetune-chart .chart-series-pi { stroke: #F09137; }
.finetune-chart .chart-series-octo { stroke: #D5A2D9; }
.finetune-chart .chart-series-openvla { stroke: #497DB0; }
.finetune-chart .chart-dots circle { stroke: #E2EEFF; stroke-width: 1.4; }
.finetune-chart .ours-dots circle { fill: #5DB3AE; }
.finetune-chart .pi-dots circle { fill: #F09137; }
.finetune-chart .octo-dots circle { fill: #D5A2D9; }
.finetune-chart .openvla-dots circle { fill: #497DB0; }
.finetune-legend line { stroke: #5DB3AE; stroke-width: 2.4; stroke-linecap: round; }
.finetune-legend circle { fill: #5DB3AE; }
.finetune-legend text { fill: var(--ink); font: 600 9.5px/1 var(--sans); }
.finetune-legend .legend-pi line { stroke: #F09137; }.finetune-legend .legend-pi circle { fill: #F09137; }
.finetune-legend .legend-octo line { stroke: #D5A2D9; }.finetune-legend .legend-octo circle { fill: #D5A2D9; }
.finetune-legend .legend-openvla line { stroke: #497DB0; }.finetune-legend .legend-openvla circle { fill: #497DB0; }
.finetune-values text { font: 600 9px/1 var(--sans); paint-order: stroke; stroke: #E2EEFF; stroke-width: 3px; stroke-linejoin: round; }
.finetune-values.values-ours { fill: #5DB3AE; }.finetune-values.values-pi { fill: #F09137; }.finetune-values.values-octo { fill: #D5A2D9; }.finetune-values.values-openvla { fill: #497DB0; }
.finetune-task-strip .task-index { min-height: 220px; }
.finetune-task-strip .task-thumb { aspect-ratio: 4 / 3; min-height: 0; border-style: solid; border-color: rgba(51,78,172,.28); }
.finetune-task-strip .task-thumb img { display: block; width: 100%; height: 100%; min-height: 0; object-fit: cover; opacity: 1; }
.finetune-video-window { width: 66.666%; margin: 0 auto; border: 1px solid rgba(51,78,172,.22); border-radius: 14px; background: #081F5C; box-shadow: 8px 8px 0 rgba(51,78,172,.08); }
.finetune-video-window video { display: block; width: 100%; aspect-ratio: 3 / 1; border: 0; border-radius: 13px; background: #081F5C; object-fit: contain; }
.reference-banner { width: min(100%, 920px); margin: 0 auto 28px; display: flex; gap: 15px; align-items: center; color: #526b98; font: 15px/1.4 var(--serif); }.reference-banner b { color: var(--navy); font-weight: 600; }.reference-banner em { font-style: normal; color: rgba(82,107,152,.75); }.reference-mark { color: var(--cobalt); font: 1.8rem var(--mono); }.cross-table-wrap { width: min(100%, 720px); margin: auto; }.cross-table { width: 100%; border-collapse: collapse; background: rgba(255,249,240,.55); border: 1px solid rgba(51,78,172,.2); }.cross-table th, .cross-table td { padding: 13px 18px; border-bottom: 1px solid rgba(51,78,172,.15); text-align: center; font: 13px var(--mono); }.cross-table th:first-child, .cross-table td:first-child { text-align: left; }.cross-table th { color: var(--cobalt); font-size: 11px; letter-spacing: .12em; }.cross-table button { padding: 0 0 2px; border-bottom: 1px solid transparent; }.cross-table button:hover, .cross-table button.active { border-color: var(--cobalt); background: rgba(208,227,255,.82); }.table-note { margin: 0 0 12px; color: #526b98; font: 14px/1.4 var(--mono); }.cross-panel { padding: 18px; background: rgba(255,249,240,.55); border: 1px solid rgba(51,78,172,.18); }.cross-video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }.mini-video { color: var(--cobalt); font: 10px var(--mono); }.mini-placeholder { min-height: 145px; margin-top: 7px; border: 1px dashed rgba(51,78,172,.4); background: linear-gradient(135deg, rgba(208,227,255,.7), rgba(112,150,209,.18)); }.mini-placeholder.wrist { background: radial-gradient(circle at 50% 40%, rgba(51,78,172,.22) 0 3%, transparent 4%), linear-gradient(145deg, rgba(8,31,92,.1), rgba(208,227,255,.8)); }.cross-panel small { display: block; margin-top: 14px; color: #526b98; font: 12px var(--serif); }
.cross-section .reference-banner { margin: 0 auto 20px; }.cross-below { width: min(100%, 920px); margin: 24px auto 0; }.cross-table button { font: 600 1.15rem var(--sans); color: var(--cobalt); }.cross-panel { padding: 18px; background: rgba(255,249,240,.68); border: 1px solid rgba(51,78,172,.18); }.cross-panel .expand-caption { margin-bottom: 16px; }
.cross-section .cross-below { width: min(100%, 1080px); }
.cross-section .cross-panel { padding: 0; border: 0; background: transparent; }
.cross-video-window { width: 66.666%; margin: 0 auto; border: 1px solid rgba(51,78,172,.22); border-radius: 14px; background: #081F5C; box-shadow: 8px 8px 0 rgba(51,78,172,.08); }
.cross-video-window video { display: block; width: 100%; aspect-ratio: 4 / 1; border-radius: 13px; background: #081F5C; object-fit: contain; }
/* Cross-embodiment matrix: task numbers run horizontally; robots form the rows. */
.cross-table { table-layout: fixed; }
.cross-table th:first-child, .cross-table td:first-child { width: 19%; }
.cross-table thead th:not(:first-child), .cross-table tbody td { width: 13.5%; }
.cross-table thead button {
  font: 800 1rem var(--sans);
  color: var(--cobalt);
  text-shadow: 0 2px 3px rgba(8, 31, 92, .34);
}
.cross-table tbody th { color: var(--navy); font: 600 1rem var(--sans); }
.cross-reference-note {
  width: 100%;
  margin: 22px auto 0;
  display: block;
  color: #7b8496;
  font: 400 17px/1.5 var(--sans);
  text-align: center;
  text-shadow: 0 2px 4px rgba(8, 31, 92, .24);
}
.frontier-wrap { position: relative; display: block; width: min(100%, 1080px); }.model-ripples { position: relative; height: 500px; width: 100%; border-left: 1px solid rgba(51,78,172,.25); border-bottom: 1px solid rgba(51,78,172,.25); }.model-circle { position: absolute; left: 26%; bottom: 29%; display: grid; place-items: center; border: 1px solid rgba(51,78,172,.52); border-radius: 50%; color: var(--cobalt); font: 10px var(--mono); text-align: center; background: rgba(208,227,255,.18); transition: transform .25s, background .25s; }.model-circle:hover { background: rgba(112,150,209,.28); transform: scale(1.04); }.circle-4 { width: 72px; height: 72px; }.circle-8 { width: 114px; height: 114px; left: 25%; bottom: 28%; }.circle-9 { width: 148px; height: 148px; left: 24%; bottom: 26%; }.circle-27 { width: 198px; height: 198px; left: 22%; bottom: 23%; }.circle-32 { width: 250px; height: 250px; left: 20%; bottom: 19%; }.circle-astra { width: 307px; height: 307px; left: 17%; bottom: 13%; }.circle-fable { width: 375px; height: 375px; left: 12%; bottom: 5%; }.circle-4 span { transform: translateY(-42px); }.circle-8 span { transform: translateY(-64px); }.circle-9 span { transform: translateY(-82px); }.circle-27 span { transform: translateY(-108px); }.circle-32 span { transform: translateY(-135px); }.circle-astra span { transform: translateY(-163px); }.circle-fable span { transform: translateY(-196px); }.frontier-task { position: absolute; z-index: 3; border: 0; padding: 2px 4px; color: var(--navy); background: rgba(255,249,240,.82); cursor: help; font: 11px var(--sans); text-decoration: underline; text-decoration-color: rgba(51,78,172,.35); text-underline-offset: 3px; }.frontier-task:hover { color: var(--cobalt); background: #fff; }.task-11 { left: 25%; top: 50%; }.task-12 { left: 48%; top: 54%; }.task-13 { left: 45%; top: 63%; }.task-21 { left: 57%; top: 56%; }.task-22 { left: 37%; top: 56%; }.task-23 { left: 48%; top: 62%; }.task-24 { left: 49%; top: 66%; }.task-bubble { position: absolute; left: 60%; top: 70px; width: 430px; padding: 18px; opacity: 0; pointer-events: none; background: rgba(255,249,240,.97); border: 1px solid rgba(51,78,172,.28); border-radius: 18px; box-shadow: 14px 17px 34px rgba(8,31,92,.18); transform: translateY(8px); transition: .2s; }.task-bubble.visible { opacity: 1; transform: translateY(0); }.task-bubble img { width: 100%; height: 250px; object-fit: contain; border-radius: 13px; background: var(--frost); margin-bottom: 14px; }.task-bubble strong { color: var(--cobalt); font: 15px var(--mono); }.task-bubble p { margin: 6px 0 0; color: var(--ink); font: 17px/1.4 var(--serif); }
.model-circle { border: 0; background: transparent; transition: none; pointer-events: none; }
.model-circle::before { content: ""; position: absolute; inset: 0; z-index: var(--circle-layer); border: 1px solid rgba(51,78,172,.52); border-radius: 50%; background: rgba(208,227,255,.18); pointer-events: none; transition: transform .25s, background .25s; }
.model-circle:hover { background: transparent; transform: none; }
.model-circle:hover::before { background: rgba(112,150,209,.28); transform: scale(1.04); }
.model-circle > span { position: relative; z-index: 10; }
.circle-astra { width: 394px; height: 394px; left: 4%; bottom: 53px; --circle-layer: 1; }
.circle-fable { width: 334px; height: 334px; left: 4%; bottom: 83px; --circle-layer: 2; }
.circle-397 { width: 278px; height: 278px; left: 4%; bottom: 111px; --circle-layer: 3; }
.circle-122 { width: 226px; height: 226px; left: 4%; bottom: 137px; --circle-layer: 4; }
.circle-27 { width: 180px; height: 180px; left: 4%; bottom: 160px; --circle-layer: 5; }
.circle-9 { width: 134px; height: 134px; left: 4%; bottom: 183px; --circle-layer: 6; }
.circle-4 { width: 96px; height: 96px; left: 4%; bottom: 202px; --circle-layer: 7; }
.circle-2 { width: 60px; height: 60px; left: 4%; bottom: 220px; --circle-layer: 8; }
.model-circle > .model-label { position: absolute; z-index: 10; transform: translate(-50%, -50%); color: var(--cobalt); font: 600 clamp(13px, 1.15vw, 16px)/1 var(--sans); letter-spacing: -.01em; white-space: nowrap; pointer-events: none; }
.circle-astra > .model-label { left: 50%; top: 3.8%; }
.circle-fable > .model-label { left: 50%; top: 95.8%; }
.circle-397 > .model-label { left: 50%; top: 4.7%; }
.circle-122 > .model-label { left: 50%; top: 94.9%; }
.circle-27 > .model-label { left: 50%; top: 6.4%; }
.circle-9 > .model-label { left: 50%; top: 92.9%; }
.circle-4 > .model-label { left: 50%; top: 9.4%; }
.circle-2 > .model-label { left: 50%; top: 24%; }
.frontier-wrap .task-bubble { z-index: 20; }
.frontier-wrap .frontier-task { min-width: 0; z-index: 20; padding: 2px 0; border: 0; border-radius: 0; color: var(--navy); background: transparent; box-shadow: none; cursor: help; font: 600 12px/1 var(--sans); transform: translate(-50%, -50%); text-underline-offset: 4px; text-decoration-thickness: 1px; white-space: nowrap; pointer-events: auto; }
.frontier-wrap .frontier-task:hover, .frontier-wrap .frontier-task:focus-visible { color: var(--cobalt); background: transparent; box-shadow: none; transform: translate(-50%, -50%) scale(1.08); outline: 0; }
.frontier-wrap .task-121 { left: 86%; top: 40%; }
.frontier-wrap .task-122 { left: 86%; top: 60%; }
.frontier-wrap .task-111 { left: 86%; top: 32%; }
.frontier-wrap .task-112 { left: 88%; top: 50%; }
.frontier-wrap .task-113 { left: 86%; top: 68%; }
.frontier-wrap .task-13 { left: 91%; top: 50%; }
.frontier-wrap .task-bubble { left: 45%; }
.frontier-criterion { width: min(100%, 1080px); margin: 26px auto 0; color: #526b98; font: 1.2rem/1.5 var(--serif); text-align: center; }
.frontier-criterion strong { color: var(--navy); font-weight: 600; }
.frontier-criterion > span, .frontier-threshold { display: block; }
.frontier-threshold { margin-top: 7px; font-size: 1.08em; font-weight: 700 !important; }
.frontier-first-model { text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 4px; }
.ablation-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 70px; align-items: center; }.ablation-matrix { position: relative; padding: 52px 0 0 118px; }.matrix-axis { position: absolute; top: 0; left: 118px; color: var(--sky); font: 11px var(--mono); letter-spacing: .12em; }.matrix-labels { position: absolute; left: 0; top: 80px; bottom: 42px; display: flex; flex-direction: column; justify-content: space-around; color: var(--sky); font: 12px var(--mono); text-align: right; }.matrix-labels small { color: rgba(208,227,255,.6); font-size: 9px; }.matrix-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 11px; }.matrix-cell { min-height: 135px; position: relative; display: grid; align-content: center; justify-items: center; gap: 9px; border: 1px solid rgba(186,214,235,.24); background: rgba(51,78,172,.25); color: var(--paper); cursor: pointer; }.matrix-cell span { font: 2.8rem var(--mono); }.matrix-cell small { color: var(--sky); font: 10px var(--mono); }.matrix-cell.work span { color: var(--sky); text-shadow: 0 0 16px var(--sky); }.matrix-cell.fail span { color: #8a7de0; }.matrix-cell.active { outline: 1px solid var(--sky); box-shadow: 0 0 0 5px rgba(186,214,235,.09); }.matrix-footnote { margin: 17px 0 0; color: rgba(208,227,255,.75); font: 11px var(--mono); }.work-mark { color: var(--sky); font-size: 1.2rem; }.fail-mark { color: #8a7de0; font-size: 1.2rem; }.ablation-detail { padding: 26px; border: 1px solid rgba(186,214,235,.22); background: rgba(51,78,172,.23); }.detail-kicker { color: var(--sky); font: 10px var(--mono); letter-spacing: .12em; }.ablation-detail h3 { margin: 10px 0 9px; font-size: 1.45rem; }.ablation-detail > p { margin: 0; color: rgba(208,227,255,.78); font: 1.05rem/1.45 var(--serif); }.zero-only { margin-top: 23px; padding: 12px; color: var(--navy); background: var(--sky); font: 12px/1.4 var(--mono); }.zero-only strong { font-weight: 600; }.gcd-comparison[hidden] { display: none; }.bar-chart { height: 226px; display: flex; align-items: end; gap: 22px; margin-top: 28px; padding: 38px 10px 22px; border-bottom: 1px solid rgba(208,227,255,.4); }.bar-chart > div { flex: 1; min-width: 0; height: 100%; display: flex; flex-direction: column; justify-content: end; align-items: center; gap: 10px; color: var(--sky); font: 600 14px/1.22 var(--sans); text-align: center; }.bar-chart i { width: 58px; position: relative; display: block; background: var(--sky); box-shadow: 5px 0 0 rgba(112,150,209,.35); font-style: normal; }.bar-chart b { position: absolute; top: -29px; left: 50%; transform: translateX(-50%); color: var(--paper); font: 700 18px/1 var(--sans); }.bar-chart span { color: inherit; font-family: var(--sans); }.gcd-method-link { color: var(--navy); font-weight: inherit; text-decoration: underline; text-decoration-thickness: 1.5px; text-underline-offset: 3px; }.bar-caption { margin-top: 16px; color: rgba(208,227,255,.7); font: 500 1.1rem/1.45 var(--sans); }.method-card-grammar { scroll-margin-top: 90px; }
.ablation-section .section-caption-light { color: var(--cobalt); }.ablation-section .section-caption-light:before, .ablation-section .section-caption-light:after { background: var(--cobalt); box-shadow: 0 4px 0 rgba(51,78,172,.16); }.matrix-axis { color: var(--cobalt); }.matrix-labels { color: #526b98; }.matrix-labels small, .matrix-column-labels small { color: #7890b4; font-size: 8px; }.matrix-column-labels { position: absolute; top: 26px; left: 118px; right: 0; display: grid; grid-template-columns: repeat(4, 1fr); color: #526b98; font: 10px/1.18 var(--sans); text-align: center; }.matrix-cell { border-color: rgba(51,78,172,.2); background: rgba(255,249,240,.55); color: var(--ink); }.matrix-cell small { color: #526b98; font: 10px var(--sans); }.matrix-cell.work span { color: var(--cobalt); text-shadow: 0 0 16px rgba(112,150,209,.7); }.matrix-cell.fail span { color: #5a4fcf; }.matrix-cell.active { outline-color: var(--cobalt); box-shadow: 0 0 0 5px rgba(112,150,209,.15); }.matrix-footnote { color: #526b98; }.ablation-detail { border-color: rgba(51,78,172,.2); background: rgba(255,249,240,.55); }.detail-kicker { color: var(--cobalt); }.ablation-detail h3 { color: var(--navy); }.ablation-detail > p { color: #526b98; }.bar-chart { border-color: rgba(51,78,172,.2); }.bar-chart > div { color: #526b98; }.bar-chart i { background: var(--cobalt); box-shadow: 5px 0 0 rgba(112,150,209,.35); }.bar-chart b { color: var(--navy); }.bar-caption { color: #526b98; font-size: 1rem; line-height: 1.45; }
.ablation-wave { text-decoration-line: underline; text-decoration-style: wavy; text-decoration-color: var(--cobalt); text-decoration-thickness: 1.25px; text-underline-offset: 4px; }
.matrix-grid { grid-template-rows: repeat(2, minmax(102px, auto)); }
.matrix-labels { gap: 8px; }
.bar-chart i { box-shadow: none; }
.ablation-frame-figure { width: min(100%, 1080px); margin: clamp(58px, 7vw, 92px) auto 0; }
.ablation-frame-figure img { display: block; width: 100%; height: auto; }
.ablation-frame-figure figcaption { width: min(100%, 920px); margin: 20px auto 0; color: #526b98; font: 1rem/1.5 var(--serif); text-align: center; }
.resources { color: #fff; background: #E2EEFF; text-align: center; }
.resources::before { background: var(--blue); }
.resources .section-caption { margin-bottom: 54px; color: #fff; }
.resources .section-caption::before,
.resources .section-caption::after { background: rgba(255,255,255,.9); box-shadow: 0 4px 0 rgba(255,255,255,.12); }
.resource-inline-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 16px;
  color: #fff;
  font: 400 clamp(1.25rem, 2vw, 1.75rem)/1.2 var(--sans);
  letter-spacing: .04em;
  margin: 52px auto 0;
}
.resource-inline-links a { text-decoration: none; }
.resource-inline-links a:hover { color: #fff; text-decoration: underline; text-underline-offset: 6px; }
.resource-inline-links i { color: #fff; font-style: normal; font-weight: 400; }
.summary-lower-grid { width: min(100%, 1080px); margin: 0 auto; display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 30px; align-items: stretch; }
.visitor-map-widget { width: 100%; margin: 0; padding: 16px 18px 18px; display: flex; flex-direction: column; justify-content: center; overflow: hidden; border: 1px solid rgba(255,255,255,.42); border-radius: 20px; background: rgba(255,255,255,.18); box-shadow: 0 12px 28px rgba(8,31,92,.12); }
.visitor-map-heading { margin-bottom: 13px; color: #fff; font: 500 12px/1 var(--sans); letter-spacing: .14em; }
.visitor-map-embed { width: 100%; min-height: 150px; display: flex; align-items: center; justify-content: center; overflow: hidden; border-radius: 12px; }
.visitor-map-embed > *, .visitor-map-embed img, .visitor-map-embed iframe, .visitor-map-embed canvas, .visitor-map-embed svg { max-width: 100% !important; height: auto !important; }
.visitor-map-embed a { display: block; max-width: 100%; }
.reference-box.bibtex-reference { width: 100%; min-width: 0; display: block; margin: 0; padding: 24px; border-radius: 20px; background: rgba(255,255,255,.72); text-align: left; }
.bibtex-reference .reference-heading { display: flex; flex-direction: row; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 16px; }
.copy-bibtex { border: 1px solid rgba(51,78,172,.3); border-radius: 999px; padding: 8px 13px; color: var(--cobalt); background: rgba(255,255,255,.48); cursor: pointer; font: 600 11px/1 var(--sans); letter-spacing: .05em; }
.copy-bibtex:hover { color: #fff; background: var(--cobalt); }
.bibtex-reference pre { margin: 0; overflow-x: auto; padding: 18px 20px; color: var(--ink); background: rgba(255,255,255,.58); border: 1px solid rgba(51,78,172,.14); font: 13px/1.6 var(--mono); white-space: pre; }
.project-outro { min-height: 1080px; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; padding: clamp(210px, 24vw, 360px) 24px clamp(240px, 21vw, 360px); background: #E2EEFF; text-align: center; }
.outro-statement { margin: 0; color: var(--navy); font-family: var(--serif); font-size: clamp(1.8rem, 4.2vw, 3.9rem); font-weight: 400; line-height: 1; letter-spacing: -.045em; }
.outro-star-link { width: 54px; height: 54px; display: block; margin: 52px auto 0; animation: outro-float 1.5s ease-in-out infinite; }
.outro-star { width: 100%; height: 100%; margin: 0; object-fit: contain; filter: drop-shadow(0 0 6px rgba(255,255,255,1)) drop-shadow(0 0 18px rgba(255,255,255,.98)) drop-shadow(0 0 32px rgba(112,150,209,.7)); transition: filter .2s ease; }
.outro-star-link:hover .outro-star { filter: drop-shadow(0 0 8px rgba(255,255,255,1)) drop-shadow(0 0 24px rgba(255,255,255,1)) drop-shadow(0 0 38px rgba(112,150,209,.9)); }
@keyframes outro-float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(10px); } }
.resource-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 80px; }.resource-grid h2 { color: var(--navy); }.resource-links { display: grid; gap: 7px; }.resource-links a { display: grid; grid-template-columns: 42px 1fr auto; gap: 15px; align-items: center; padding: 17px 0; border-bottom: 1px solid rgba(51,78,172,.2); text-decoration: none; }.resource-links span { color: var(--cobalt); font: 11px var(--mono); }.resource-links strong { color: var(--navy); font-size: 1.2rem; }.resource-links em { color: #526b98; font: 12px var(--serif); font-style: normal; }.resource-links a:hover strong { text-decoration: underline; text-underline-offset: 4px; }.site-footer { width: min(100%, 1080px); display: flex; justify-content: space-between; gap: 20px; margin: 110px auto 0; padding-top: 18px; color: #526b98; border-top: 1px solid rgba(51,78,172,.2); font: 11px var(--mono); }
.quote-box { width: min(100%, 860px); position: relative; margin: 72px auto 0; padding: 28px 34px 24px 54px; border: 1px solid rgba(51,78,172,.22); background: rgba(255,249,240,.5); box-shadow: 8px 8px 0 rgba(51,78,172,.1); }.quote-mark { position: absolute; left: 16px; top: 14px; color: var(--cobalt); font: 3rem var(--serif); }.quote-box p { margin: 0; color: var(--navy); font: 1.38rem/1.35 var(--serif); }.quote-box small { display: block; margin-top: 12px; color: #687b96; font: 11px var(--sans); letter-spacing: .1em; text-transform: uppercase; }
.reference-box { width: min(100%, 860px); display: grid; grid-template-columns: 130px 1fr; gap: 26px; margin: 38px auto 0; padding: 22px 24px; border: 1px solid rgba(51,78,172,.25); background: rgba(255,249,240,.62); box-shadow: 6px 6px 0 rgba(51,78,172,.1); }
.reference-heading { display: flex; flex-direction: column; justify-content: space-between; color: var(--cobalt); font-family: var(--sans); letter-spacing: .16em; }
.reference-heading span { font-size: 1rem; font-weight: 600; }
.reference-heading i { color: #7890b4; font: normal 12px var(--mono); }
.reference-content p { margin: 0; color: #526b98; font: 1rem/1.5 var(--body); }
.reference-content em { color: var(--navy); font-style: italic; }
.reference-content a { display: inline-block; margin-top: 13px; color: var(--cobalt); font: 600 12px var(--sans); letter-spacing: .08em; text-decoration: underline; text-underline-offset: 4px; }

@keyframes float { 0%,100% { transform: translate(-50%,0); } 50% { transform: translate(-50%,8px); } }
@keyframes nudge { 0%,100% { transform: translateX(0); } 50% { transform: translateX(-6px); } }
@keyframes reveal { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 900px) {
  .summary-lower-grid { grid-template-columns: 1fr; }
  .visitor-map-widget { width: min(100%, 340px); margin-inline: auto; }
  .section-rail { display: none; }
  .header-nav { display: none; }
  .hero { min-height: 720px; }
  .section-heading, .summary-grid, .finetune-layout, .frontier-wrap, .ablation-layout, .resource-grid, .libero-grid { grid-template-columns: 1fr; display: grid; gap: 32px; }
  .section-heading { align-items: start; }.section-note { width: auto; max-width: 500px; }.method-grid { grid-template-columns: 1fr; }.task-overview { grid-template-columns: 1fr; gap: 25px; }.task-divider { height: 1px; }.task-group-accent { padding-left: 0; }.experiment-setup-grid, .experiment-task-groups { grid-template-columns: 1fr; }.experiment-setup-figure { width: min(100%, 520px); margin-inline: auto; }.experiment-task-panel h3 { min-height: 0; margin-top: 12px; }.experiment-task-caption { grid-column: 1; }.zero-grid { grid-template-columns: 1fr; }.task-type-list { grid-template-columns: repeat(3, 1fr); }.zero-status-card { grid-column: 1 / -1; }.task-type { min-height: 80px; }.task-type.active, .task-type:hover { transform: translateY(-3px); }.demo-chart { grid-template-columns: 35px 1fr; }.chart-readout { grid-column: 2; flex-direction: row; gap: 14px; align-items: baseline; border-left: 0; border-top: 1px solid rgba(51,78,172,.2); padding: 13px 0 0; }.chart-readout strong { font-size: 2.4rem; }.chart-callout { left: 55px; }.model-ripples { width: min(100%, 520px); margin: 0 auto; }.frontier-tasks { width: min(100%, 520px); margin: 0 auto; }.ablation-matrix { max-width: 640px; }.resource-grid { gap: 30px; }
}
@media (max-width: 580px) {
  body { font-size: 15px; }.intro h1 { font-size: clamp(1.1rem, 7vw, 4.1rem); letter-spacing: -.11em; }.intro-stage { min-height: 230px; margin-top: 37px; }.intro-line, .intro-question { font-size: 1.15rem; }.scroll-cue { bottom: -95px; }.intro-progress { left: 20px; bottom: 22px; }.intro-progress span { width: 24px; }.site-header { height: 62px; padding: 0 18px; }.header-chip { font-size: 10px; }.section { padding: 75px 18px; }.section-caption { margin-bottom: 44px; gap: 11px; letter-spacing: .08em; font-size: 2rem; }.section-heading h2, .summary-lede h2, .resource-grid h2 { font-size: 2rem; }.hero { min-height: 650px; padding-top: 60px; }.hero-content { padding-bottom: 25px; }.hero h2 { font-size: clamp(1.1rem, 7vw, 3.15rem); letter-spacing: -.12em; }.hero-deck { font-size: 1.2rem; }.author-list { margin-top: 28px; font-size: 14px; }.affiliations, .author-notes { font-size: 14px; line-height: 1.45; }.overview-project-links { gap: 11px; font-size: clamp(1.05rem, 5vw, 1.35rem); }.abstract-card { padding: 0; }.metric-strip { gap: 7px; }.metric-strip strong { font-size: 2.1rem; }.metric-strip small { font-size: 12px; }.method-card { grid-template-columns: 37px 1fr; padding: 18px; min-height: 245px; }.experiment-setup-grid { gap: 28px; margin-bottom: 42px; }.experiment-setup-copy h2 { font-size: 2rem; }.experiment-setup-copy > p:last-child { font-size: 1rem; line-height: 1.58; }.experiment-task-groups { gap: 22px; }.experiment-task-table th, .experiment-task-table td { padding: 8px 5px; }.experiment-task-table thead th { font-size: 9px; }.experiment-task-table tbody th { font-size: 10px; }.experiment-task-table tbody td { font-size: 11px; }.experiment-task-table .task-code { font-size: 9px; }.task-type-list { grid-template-columns: 1fr; }.task-type { min-height: auto; }.demo-chart { min-height: 345px; padding: 16px 8px; gap: 9px; }.chart-area { min-height: 280px; }.chart-readout { flex-wrap: wrap; gap: 7px 13px; }.chart-readout em { flex-basis: 100%; }.p10 { --y: 86px; }.p20 { --y: 138px; }.p30 { --y: 179px; }.p40 { --y: 212px; }.p50 { --y: 236px; }.finetune-task-strip { grid-template-columns: repeat(2, 1fr); }.circle-4 { width: 55px; height: 55px; }.circle-8 { width: 88px; height: 88px; }.circle-9 { width: 118px; height: 118px; }.circle-27 { width: 155px; height: 155px; }.circle-32 { width: 192px; height: 192px; }.circle-astra { width: 235px; height: 235px; }.circle-fable { width: 286px; height: 286px; }.circle-4 span { transform: translateY(-33px); }.circle-8 span { transform: translateY(-50px); }.circle-9 span { transform: translateY(-67px); }.circle-27 span { transform: translateY(-86px); }.circle-32 span { transform: translateY(-103px); }.circle-astra span { transform: translateY(-127px); }.circle-fable span { transform: translateY(-152px); }.model-ripples { height: 370px; }.task-bubble { left: 10px; top: 300px; width: 210px; }.ablation-layout { gap: 34px; }.ablation-matrix { padding-left: 80px; }.matrix-axis { left: 80px; font-size: 9px; }.matrix-column-labels { left: 80px; font-size: 8px; }.matrix-labels { font-size: 9px; }.matrix-cell { min-height: 105px; }.matrix-cell span { font-size: 2.1rem; }.matrix-cell small { font-size: 8px; }.resource-links a { grid-template-columns: 27px 1fr; }.resource-links em { grid-column: 2; }.quote-box { padding-left: 42px; }.quote-box p { font-size: 1.1rem; }.reference-box { grid-template-columns: 1fr; gap: 10px; }.reference-heading { flex-direction: row; align-items: baseline; }.site-footer { flex-direction: column; margin-top: 80px; }
}

@media (max-width: 580px) {
  .hero-institution-logos { gap: 0; min-height: 43px; margin: 8px 0 9px; padding: 0; }
  .institution-logo-school { width: 40px; height: 40px; }
  .institution-logo-ai-lab { width: 108px; height: 42px; }
  .institution-logo + .institution-logo { margin-left: -11px; }
}

/* Dynamic baseline chart: keep the plot and readout in one coherent responsive block. */
@media (max-width: 900px) {
  .demo-chart { grid-template-columns: 1fr; }
  .chart-readout { grid-column: 1; display: grid; grid-template-columns: auto auto; justify-content: start; align-items: baseline; column-gap: 14px; border-left: 0; border-top: 1px solid rgba(51,78,172,.2); padding: 17px 0 0; }
  .chart-readout > strong { margin-bottom: 12px; }
  .demo-score-list { grid-column: 1 / -1; grid-template-columns: repeat(2, minmax(170px, 1fr)); }
}
@media (max-width: 580px) {
  .demo-chart { min-height: 0; padding: 16px 10px 18px; }
  .chart-area { min-height: 0; overflow-x: auto; padding-top: 2px; }
  .chart-series-legend, .trajectory-chart, .chart-x, .chart-axis-title-x { min-width: 640px; }
  .demo-score-list { grid-template-columns: 1fr; }
  .randomization-task-tabs { grid-template-columns: repeat(6, 145px); }
  .randomization-video-caption { align-items: center; }
  .randomization-video-list { grid-template-columns: 1fr; }
  .randomization-video-card:last-child:nth-child(odd) { grid-column: auto; width: 100%; }
  .randomization-video { aspect-ratio: 3 / 1; }
  .finetune-video-window { width: 100%; }
  .cross-video-window { width: 100%; }
  .randomization-section .section-heading h2 { font-size: clamp(1rem, 4.5vw, 1.45rem); }
}

.intro .intro-stage { min-height: min(58svh, 510px); margin: 0; }
.intro .intro-question { max-width: none; opacity: 0; transform: translateY(26px); font-size: clamp(2.2rem, 6.5vw, 5.8rem); line-height: .98; letter-spacing: -.06em; text-align: center; }
.intro .intro-stage[data-stage="0"] .intro-question-initial { opacity: 1; pointer-events: auto; transform: translateY(0); }
@media (max-width: 580px) {
  .section { --section-pad-x: 18px; --section-card-gap: 16px; }
  .intro .intro-stage { min-height: min(68svh, 520px); }
  .intro .intro-question { font-size: clamp(2.2rem, 9.5vw, 3.9rem); }
  .intro .intro-comparison { grid-template-columns: 1fr; gap: 18px; }
  .intro .intro-comparison p { font-size: 1.23rem; text-align: center; }
  .intro .intro-pdf { width: min(100%, 210px); height: 170px; justify-self: center; }
  .zero-shot-title-row { gap: 10px; }
  .zero-shot-title-icon { width: 38px; height: 38px; }
  .zero-shot .section-heading h2 { white-space: nowrap; font-size: clamp(1rem, 4.2vw, 2rem); }
  .frontier-wrap .circle-astra { width: 300px; height: 300px; left: 4%; bottom: 35px; }
  .frontier-wrap .circle-fable { width: 260px; height: 260px; left: 4%; bottom: 55px; }
  .frontier-wrap .circle-397 { width: 222px; height: 222px; left: 4%; bottom: 74px; }
  .frontier-wrap .circle-122 { width: 186px; height: 186px; left: 4%; bottom: 92px; }
  .frontier-wrap .circle-27 { width: 150px; height: 150px; left: 4%; bottom: 110px; }
  .frontier-wrap .circle-9 { width: 118px; height: 118px; left: 4%; bottom: 126px; }
  .frontier-wrap .circle-4 { width: 88px; height: 88px; left: 4%; bottom: 141px; }
  .frontier-wrap .circle-2 { width: 58px; height: 58px; left: 4%; bottom: 156px; }
  .model-circle > .model-label { font-size: 10px; }
  .frontier-wrap .task-bubble { left: 10px; top: 300px; width: min(calc(100% - 20px), 320px); }
}

/* Larger, softer ablation matrix marks and labels. */
.ablation-matrix { padding: 88px 0 0; }
.matrix-axis { font: 700 17px/1 var(--sans); letter-spacing: .035em; }
.matrix-axis { left: 124px; }
.matrix-column-labels { top: 27px; left: 124px; font: 600 13px/1.22 var(--sans); }
.matrix-column-labels small { font-size: 10.5px; line-height: 1.2; }
.matrix-body { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 12px; align-items: stretch; }
.matrix-labels { position: static; display: grid; grid-template-rows: repeat(2, minmax(0, 1fr)); gap: 11px; font: 600 14px/1.22 var(--sans); text-align: right; }
.matrix-labels > span { display: flex; align-items: center; justify-content: flex-end; }
.matrix-column-labels .setting-name { color: var(--navy); font-size: 1.25em; font-weight: 400; letter-spacing: -.025em; }
.matrix-labels .setting-name { color: var(--navy); font-size: 1em; font-weight: 400; letter-spacing: -.025em; }
.ablation-detail .detail-kicker { font-size: 14px; text-align: center; }
#abl-copy { white-space: pre-line; }
.matrix-cell { min-height: 0; aspect-ratio: 1 / 1; gap: 12px; border-radius: 14px; }
.matrix-cell small { font: 500 12px/1.2 var(--sans); }
.matrix-cell > span {
  position: relative;
  display: block;
  width: 46px;
  height: 46px;
  box-sizing: border-box;
  font-size: 0;
  line-height: 0;
}
.matrix-cell.work > span {
  border: 8px solid currentColor;
  border-radius: 50%;
  box-shadow: 0 0 16px rgba(112,150,209,.58);
}
.matrix-cell.fail > span::before,
.matrix-cell.fail > span::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 8px;
  height: 42px;
  border-radius: 999px;
  background: currentColor;
  transform-origin: center;
}
.matrix-cell.fail > span::before { transform: translate(-50%, -50%) rotate(45deg); }
.matrix-cell.fail > span::after { transform: translate(-50%, -50%) rotate(-45deg); }
.matrix-footnote { display: grid; gap: 8px; margin-left: 124px; font: 500 13px/1.35 var(--sans); }
.matrix-legend-item { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 8px; align-items: center; }
.matrix-footnote .work-mark,
.matrix-footnote .fail-mark {
  position: relative;
  display: inline-block;
  width: 19px;
  height: 19px;
  box-sizing: border-box;
  margin: 0;
  font-size: 0;
  line-height: 0;
  justify-self: center;
  vertical-align: middle;
}
.matrix-footnote .work-mark { border: 5px solid currentColor; border-radius: 50%; }
.matrix-footnote .fail-mark::before,
.matrix-footnote .fail-mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 5px;
  height: 19px;
  border-radius: 999px;
  background: currentColor;
  transform-origin: center;
}
.matrix-footnote .fail-mark::before { transform: translate(-50%, -50%) rotate(45deg); }
.matrix-footnote .fail-mark::after { transform: translate(-50%, -50%) rotate(-45deg); }
.bar-chart { height: 260px; }
.bar-chart > div { display: grid; grid-template-rows: minmax(0, 1fr) auto; align-items: stretch; justify-content: stretch; justify-items: center; }
.bar-chart > div > i { grid-row: 1; align-self: end; }
.bar-chart > div > span { grid-row: 2; }

@media (max-width: 580px) {
  .ablation-matrix { padding: 80px 0 0; }
  .matrix-axis { left: 88px; font-size: 13px; }
  .matrix-column-labels { left: 88px; top: 25px; font-size: 10px; }
  .matrix-column-labels small { font-size: 8.5px; }
  .matrix-body { grid-template-columns: 78px minmax(0, 1fr); gap: 10px; }
  .matrix-labels { font-size: 10.5px; }
  .matrix-cell small { font-size: 9.5px; }
  .matrix-cell > span { width: 35px; height: 35px; }
  .matrix-cell.work > span { border-width: 6px; }
  .matrix-cell.fail > span::before,
  .matrix-cell.fail > span::after { width: 6px; height: 32px; }
  .matrix-footnote { margin-left: 88px; font-size: 11px; }
}