@font-face { font-family:'DM Sans'; src:url(assets/dm-sans.ttf) format('truetype'); font-weight:400; font-display:swap; }
@font-face { font-family:'DM Sans'; src:url(assets/dm-sans-bold.ttf) format('truetype'); font-weight:600 800; font-display:swap; }
@font-face { font-family:Caveat; src:url(assets/caveat-bold.ttf) format('truetype'); font-weight:700; font-display:swap; }
:root { --paper:#fdfdfb; --ink:#20221e; --muted:#63665e; --blue:#2c4cde; --red:#cc4334; --yellow:#f5ef61; --rule:#dcded7; --grid:rgba(91,109,129,.065); --hand:Caveat,'Segoe Print',cursive; --sans:'DM Sans',Arial,sans-serif; }
* { box-sizing:border-box; letter-spacing:0; }
html { scroll-behavior:smooth; scroll-padding-top:24px; }
body { margin:0; color:var(--ink); background:var(--paper); font:400 16px/1.65 var(--sans); background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px); background-size:28px 28px; }
::selection { background:var(--yellow); color:var(--ink); }
a { color:inherit; text-decoration:none; }
button { font:inherit; color:inherit; cursor:pointer; border-radius:3px; }
button,a { -webkit-tap-highlight-color:transparent; }
button:focus-visible,a:focus-visible,[tabindex]:focus-visible { outline:3px solid var(--blue); outline-offset:6px; }
p,h1,h2,h3,h4,figure { margin:0; }
h1,h2,h3,h4,.handwritten { font-family:var(--hand); font-weight:700; line-height:1.1; }
h2 { font-size:50px; }
h3 { font-size:32px; }
h4 { font-size:28px; }
.wrap { width:min(1180px,calc(100% - 96px)); margin-inline:auto; }
.section { padding-block:76px; border-top:1px solid var(--rule); }
.icon { width:20px; height:20px; fill:none; stroke:currentColor; stroke-width:1.8; stroke-linecap:round; stroke-linejoin:round; flex:none; }
.icon-definitions { position:absolute; width:0; height:0; overflow:hidden; }
.blue { color:var(--blue); }
.red { color:var(--red); }
.skip-link { position:fixed; top:8px; left:8px; z-index:50; background:var(--yellow); padding:12px 20px; transform:translateY(-180%); opacity:0; pointer-events:none; }
.skip-link:focus { transform:translateY(0); opacity:1; pointer-events:auto; }

.hero { padding-top:36px; }
.hero-copy { text-align:center; }
h1 { font-size:112px; line-height:1.2; white-space:nowrap; }
.circled { position:relative; color:var(--blue); display:inline-block; }
.circled svg { position:absolute; width:118%; height:105%; left:-7%; top:4%; fill:none; stroke:var(--blue); stroke-width:2.5; stroke-linecap:round; }
.title-dot { color:var(--red); }
.hero-subtitle { font:700 30px/1.2 var(--hand); margin-top:12px; }
.highlight { position:relative; isolation:isolate; }
.highlight::after { content:''; position:absolute; left:-4px; right:-4px; bottom:1px; height:.45em; background:var(--yellow); z-index:-1; transform:rotate(-1deg); }
.authors { display:flex; justify-content:center; flex-wrap:wrap; gap:8px 20px; margin:25px auto 0; max-width:1100px; font-size:17px; line-height:1.6; }
.author { white-space:nowrap; }
.author a { color:var(--blue); text-decoration:underline; text-decoration-color:transparent; text-underline-offset:4px; }
.author a:hover { text-decoration-color:currentColor; }
.author sup { font-size:12px; line-height:0; margin-left:2px; }
.author-notes { display:flex; justify-content:center; flex-wrap:wrap; gap:6px 22px; margin-top:10px; font-size:12px; color:var(--muted); }
.author-notes sup { font-size:12px; }
.hero-links { display:flex; flex-wrap:wrap; justify-content:center; align-items:center; gap:14px; margin-top:23px; }
.button { display:inline-flex; align-items:center; justify-content:center; gap:10px; padding:10px 18px; font-size:14px; min-height:44px; font-weight:700; border-radius:3px; transition:transform .2s,background .2s; }
.button-primary { color:#fff; background:var(--blue); box-shadow:3px 3px 0 var(--ink); border:1.5px solid var(--ink); transform:rotate(-1deg); }
.button-primary:hover { background:#213cbc; transform:translateY(-2px); }
.button-resource { border:1.5px solid #92968d; color:var(--muted); background:transparent; }
.button-resource[href] { color:var(--ink); border-color:var(--ink); }
.button-resource[href]:hover { color:var(--blue); border-color:var(--blue); }
.button:disabled { cursor:not-allowed; }
.hero-stage { margin-top:34px; }
.prompt-note { display:flex; align-items:center; gap:16px; font-size:30px; margin-bottom:15px; }
.prompt-note svg { width:74px; height:45px; fill:none; stroke:currentColor; stroke-width:2.5; stroke-linecap:round; stroke-linejoin:round; flex:none; transform:rotate(14deg); }
.steering-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:22px; }
.loop-player { position:relative; }
.loop-player video { display:block; width:100%; aspect-ratio:16/9; object-fit:contain; background:#20221e; }
.loop-player video[role=button] { cursor:pointer; }
.steering-clip figcaption { display:flex; justify-content:space-between; align-items:baseline; gap:12px; margin-top:10px; }
.steering-clip h3 { font-size:32px; }
.steering-clip figcaption > span { color:var(--muted); font-size:13px; }
.film-section { padding-block:42px 70px; }
.film-section h2 { font-size:40px; margin-bottom:20px; }
.film-section video { display:block; width:100%; aspect-ratio:16/9; background:#20221e; }

.intro-grid { display:grid; grid-template-columns:1.2fr 1fr; gap:64px; align-items:center; }
#intro-title { margin-bottom:34px; line-height:1.15; text-wrap:balance; }
.overview-figure { margin-top:0; }
.prose p + p { margin-top:20px; }
.prose p { color:var(--muted); }
.prose .key-line { font-weight:700; color:var(--ink); border-left:3px solid var(--blue); padding-left:18px; margin-top:26px; }
.section-heading { display:flex; align-items:end; justify-content:space-between; gap:40px; margin-bottom:34px; }
.section-heading > p { color:var(--muted); max-width:390px; }
.demo-tabs { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); border-bottom:2px solid var(--ink); gap:8px; }
.demo-tabs button { display:flex; align-items:center; gap:16px; background:transparent; border:0; border-radius:3px 3px 0 0; padding:20px; min-height:100px; text-align:left; transition:background .2s; }
.demo-tabs button[aria-selected=true] { background:var(--yellow); }
.demo-tabs button:hover:not([aria-selected=true]) { background:#edf0e8; }
.tab-number { font:700 32px/1 var(--hand); color:var(--muted); }
.demo-tabs button > span:nth-child(2) { font:700 27px/1.1 var(--hand); }
.demo-tabs small { display:block; margin-top:6px; font:400 13px/1.4 var(--sans); color:var(--muted); }
.demo-tabs .icon { margin-left:auto; width:25px; height:25px; }
.demo-body { display:grid; grid-template-columns:1.6fr 1fr; gap:44px; padding-top:32px; align-items:center; }
.demo-body video { width:100%; aspect-ratio:16/9; background:var(--ink); display:block; object-fit:contain; }
.demo-description h3 { font-size:38px; margin-bottom:18px; }
.demo-description > p { color:var(--muted); }

.method-steps { display:grid; grid-template-columns:1fr 70px 1fr; gap:26px; margin:40px 0; }
.step-label { font:700 24px var(--hand); display:block; margin-bottom:8px; }
.method-steps p { color:var(--muted); margin-top:12px; }
.step-arrow { display:grid; place-items:center; }
.step-arrow .icon { height:44px; width:44px; stroke-width:1; }
.research-figure > a { display:block; }
.research-figure img { display:block; width:100%; height:auto; }
figcaption { font-size:13px; color:var(--muted); line-height:1.6; }
.research-figure figcaption,.training-animation figcaption { padding-top:14px; }
.training-section,.filtering-section { margin-top:54px; }
#training-title,#filtering-title { font-size:40px; line-height:1.2; }
.filtering-section .prose { max-width:900px; margin:24px 0 30px; }
.training-steps { display:grid; grid-template-columns:1fr 1fr; gap:40px; margin:30px 0; }
.training-steps h4 { color:var(--blue); margin-bottom:14px; }
.training-steps p { color:var(--muted); }
.training-animation,.filtering-animation { max-width:1000px; margin-inline:auto; }

.metrics { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:42px; margin:45px 0; }
.metrics article + article { border-left:1px solid var(--rule); padding-left:42px; }
.metric-value { font:700 74px/1 var(--hand); display:inline-block; position:relative; margin-bottom:16px; color:var(--ink); }
.metric-value > span { font-size:44px; }
.metric-value svg { position:absolute; inset:-4px -25px; width:calc(100% + 50px); height:calc(100% + 14px); fill:none; stroke:var(--red); stroke-width:2; }
.metrics h3 { font-size:29px; }
.results-section .section-heading { margin-bottom:18px; }
.results-context { max-width:980px; color:var(--muted); }
.metrics p { font-size:15px; line-height:1.65; max-width:410px; color:var(--muted); margin-top:10px; }
.policy-note { margin:42px 0 24px; font-size:30px; }
.policy-results { margin-top:0; }
.charts-row { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:22px; }
.chart-panel { position:relative; min-width:0; }
.chart-title { text-align:center; font-size:32px; margin-bottom:16px; }
.chart-title sub { font-family:var(--sans); font-size:55%; line-height:0; }
.chart-scales { display:flex; justify-content:space-between; gap:12px; font:400 12px/1.4 var(--sans); margin-bottom:8px; }
.chart-success { color:#ad7c00; }
.chart-steering { color:var(--blue); }
.experiment-chart { display:block; width:100%; height:286px; overflow:visible; }
.chart-gridline { stroke:#bfc5bd; stroke-width:1; stroke-dasharray:4 5; opacity:.6; }
.chart-axis { fill:none; stroke:#9ca395; stroke-width:1; }
.chart-tick { fill:var(--muted); font:400 12px var(--sans); }
.chart-axis-title { fill:var(--ink); font:700 21px var(--hand); }
.chart-series { fill:none; stroke:currentColor; }
.chart-line { stroke-width:2.5; stroke-linecap:round; }
.chart-error { stroke-width:1.4; opacity:.6; }
.chart-point { fill:currentColor; stroke:var(--paper); stroke-width:1; }
.chart-point:hover { stroke:currentColor; stroke-width:3; }
.chart-value { fill:var(--ink); stroke:var(--paper); stroke-width:4px; paint-order:stroke; stroke-linejoin:round; font:700 13px var(--sans); }
.chart-legend { display:flex; justify-content:center; flex-wrap:wrap; gap:14px 32px; margin:18px 0 10px; font-size:14px; }
.chart-legend-item { display:inline-flex; align-items:center; gap:10px; }
.chart-swatch { position:relative; display:inline-block; width:28px; height:2px; background:currentColor; }
.chart-swatch::after { content:''; position:absolute; width:8px; height:8px; border-radius:50%; background:currentColor; left:10px; top:-3px; }
.chart-data-table { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); white-space:nowrap; }
@media (max-width:1000px) { .charts-row { grid-template-columns:minmax(0,550px); justify-content:center; gap:36px; } }
.bibtex { margin:26px 0 0; min-height:110px; border:1px solid var(--rule); border-radius:3px; padding:24px; white-space:pre-wrap; overflow-wrap:anywhere; }
#method-title { font-size:44px; }
@media (min-width:900px) { #method-title,#results-title,#demos-title,.hero-subtitle { white-space:nowrap; } }

@media (min-width:1600px) { .wrap { width:min(1320px,calc(100% - 128px)); } }
@media (max-width:1150px) {
  .wrap { width:calc(100% - 64px); } .authors { max-width:840px; } .intro-grid { gap:36px; }
  #intro-title,#method-title { font-size:40px; }
  .demo-body { gap:30px; grid-template-columns:1.4fr 1fr; } .metric-value { font-size:64px; }
  .metrics { gap:28px; } .metrics article + article { padding-left:28px; }
}
@media (max-width:800px) {
  .wrap { width:calc(100% - 40px); } .hero { padding-top:24px; } h1 { font-size:94px; }
  .authors { gap:8px 18px; font-size:16px; } .steering-grid { gap:14px; } .prompt-note { font-size:27px; }
  .steering-clip figcaption { display:block; } .steering-clip h3 { font-size:30px; } .steering-clip figcaption > span { font-size:12px; }
  .film-section { padding-block:32px 50px; } .section { padding-block:56px; }
  h2 { font-size:44px; } .intro-grid { grid-template-columns:1fr; gap:30px; } .overview-figure { max-width:600px; margin-inline:auto; }
  .section-heading { align-items:start; gap:24px; } .section-heading > p { max-width:250px; }
  .demo-tabs { gap:3px; } .demo-tabs button { padding:16px 12px; gap:10px; } .demo-tabs button > span:nth-child(2) { font-size:24px; } .demo-tabs .icon { display:none; }
  .demo-body { grid-template-columns:1fr; gap:24px; } .demo-description h3 { font-size:36px; } .demo-description h3 br { display:none; }
  .method-steps { gap:18px; grid-template-columns:1fr 28px 1fr; } .method-steps h3 { font-size:29px; }
  .training-steps { grid-template-columns:1fr; gap:24px; } .training-steps h4 { margin-bottom:8px; }
  .metrics { gap:22px; } .metrics article + article { padding-left:22px; } .metric-value { font-size:56px; }
  .metric-value > span { font-size:32px; } .metric-value svg { left:-16px; width:calc(100% + 32px); } .metrics h3 { font-size:27px; }
}
@media (max-width:580px) {
  #intro-title { font-size:36px; }
  .wrap { width:calc(100% - 32px); } h1 { font-size:73px; } .hero-subtitle { font-size:26px; }
  .authors { margin-top:20px; gap:6px 15px; } .author-notes { gap:4px 14px; }
  .hero-links { gap:12px; max-width:350px; margin-inline:auto; } .button { font-size:13px; padding:9px 13px; gap:8px; }
  .hero-stage { margin-top:28px; } .prompt-note { font-size:25px; gap:10px; } .prompt-note svg { width:56px; }
  .steering-grid { grid-template-columns:1fr; gap:24px; } .steering-clip figcaption { display:flex; } .steering-clip figcaption > span { font-size:14px; }
  .film-section h2 { font-size:36px; margin-bottom:16px; } .section { padding-block:44px; } h2 { font-size:39px; }
  .policy-note { font-size:26px; }
  .section-heading { display:block; margin-bottom:28px; } .section-heading > p { margin-top:20px; max-width:none; } .desktop-only { display:none; }
  .demo-tabs button { padding:13px 8px; min-height:112px; gap:6px; align-items:start; flex-direction:column; }
  .tab-number { font-size:22px; } .demo-tabs button > span:nth-child(2) { font-size:24px; } .demo-tabs small { font-size:12px; }
  .demo-body { padding-top:20px; }
  .method-steps { grid-template-columns:1fr; gap:28px; margin:30px 0; } .step-arrow { display:none; } .method-steps h3 { font-size:31px; }
  .training-section,.filtering-section { margin-top:36px; } #training-title,#filtering-title { font-size:35px; }
  #training-title .highlight::after { display:none; } #training-title .highlight { color:var(--blue); }
  .metrics { gap:0; margin:28px 0; grid-template-columns:1fr; }
  .metrics article { display:grid; grid-template-columns:130px 1fr; column-gap:22px; padding:25px 0; }
  .metrics article + article { border-left:0; padding-left:0; border-top:1px solid var(--rule); }
  .metric-value { font-size:60px; grid-row:1/3; align-self:center; margin:0; justify-self:start; } .metric-value > span { font-size:36px; }
  .metrics article:first-child .metric-value > span { display:block; font-size:28px; }
  .metric-value svg { inset:-8px -12px; width:calc(100% + 24px); } .metrics p { font-size:14px; margin-top:8px; }
}
@media (max-width:360px) {
  h1 { font-size:65px; } .hero-subtitle { font-size:24px; } .authors { gap:6px 13px; font-size:15px; } .button { font-size:12px; }
  .metrics article { grid-template-columns:112px 1fr; } .metric-value { font-size:53px; } .demo-tabs button > span:nth-child(2) { font-size:22px; }
}
@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior:auto; } *,*::before,*::after { transition:none!important; animation:none!important; }
}