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/* Video-first edition */
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.orbit-video{height:auto;aspect-ratio:16/9;object-fit:contain}.orbit-label{bottom:55px}@media(max-width:620px){.orbit-video{height:auto;aspect-ratio:16/9;object-fit:contain}.orbit-label{bottom:42px;left:9px;padding:6px 9px}.orbit-label strong{font-size:13px}.orbit-label>span{font-size:5px}}
/* Open research narrative: static evidence and in-view video. */
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/* Input/output overview, before the codec internals. */
.io-overview{display:grid;grid-template-columns:1.05fr 25px .85fr 25px 1.5fr;align-items:center;gap:18px;background:#fff;border:1px solid #d9dfd3;border-radius:9px;padding:28px;margin:32px 0}.io-label{display:block;font-size:14px;letter-spacing:.12em;color:var(--green);font-weight:600;margin-bottom:16px}.io-input>img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:4px;margin-bottom:16px}.io-input>strong{font-size:15px;font-weight:550}.io-input>p,.output-row p{font-size:14px;color:var(--muted);line-height:1.6;margin-top:6px}.io-arrow{font-size:26px;color:#7f947d;text-align:center}.io-model{background:#e9efdf;border:1px solid #bfd0b6;border-radius:9px;text-align:center;padding:27px 12px}.io-model .io-label{font-size:14px;margin-bottom:15px}.io-model>strong{font-size:36px;letter-spacing:-.055em;font-weight:550}.io-model>p{font-size:14px;color:#52654c;line-height:1.6;margin-top:12px}.model-base{font-size:14px;color:#71816b;display:block;margin-top:20px}.io-outputs>.io-label{margin-bottom:12px}.output-row{display:grid;grid-template-columns:94px 1fr;gap:15px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}.output-row:last-child{border-bottom:0}.output-row img,.answer-thumbnail{width:94px;height:65px;object-fit:cover;border-radius:4px}.answer-thumbnail{display:flex;align-items:center;justify-content:center;text-align:center;background:#eef0eb;font:italic 16px Georgia,serif;color:#53604d}.output-row strong{font-size:14px;font-weight:600}.output-row p{font-size:14px;margin-top:3px}.depth-output{background:#f0f4e9;border-radius:5px;padding:12px 8px;margin:0 -8px}.io-overview figcaption{grid-column:1/-1;font-size:14px;color:var(--muted);border-top:1px solid var(--line);padding-top:17px;margin-top:7px;text-align:center}.codec-bridge{text-align:center;margin:35px 0 45px}.codec-bridge>span:first-child{font-size:14px;letter-spacing:.13em;color:var(--green)}.codec-bridge p{font-size:22px;letter-spacing:-.03em;margin:10px 0}.codec-bridge>span:last-child{color:var(--green);font-size:26px}.codec-plain-flow{display:grid;grid-template-columns:1.2fr 30px 1.2fr 30px .75fr;gap:15px;align-items:center;margin:25px 0 30px;padding:20px 0;border-top:1px solid #c8d1c1;border-bottom:1px solid #c8d1c1}.codec-plain-flow>div{padding:14px}.codec-plain-flow>span{color:var(--green);text-align:center;font-size:22px}.codec-plain-flow div span{display:block;font-size:14px;color:var(--muted);margin-bottom:7px}.codec-plain-flow strong{font-size:14px;font-weight:550}.codec-highlight{background:#dfe8d5;border-radius:5px}.codec-plain-flow+.mmdc-promise{margin-top:0}
@media(max-width:900px){.io-overview{gap:12px;padding:20px;grid-template-columns:1fr 18px .8fr 18px 1.3fr}.output-row{grid-template-columns:70px 1fr;gap:10px}.output-row img,.answer-thumbnail{width:70px;height:55px}.io-model>strong{font-size:29px}.io-input>strong{font-size:14px}.codec-plain-flow strong{font-size:14px}.codec-plain-flow{gap:6px}}
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@media(max-width:900px){.encoding-steps{grid-template-columns:1fr 18px 1fr;gap:20px}.encoding-steps>.encoding-arrow:nth-child(4){display:none}.codec-two figure{display:block}.carousel-note{display:none}.encoding-map{padding:20px}.encoding-step img{max-height:140px}.scale-bands{max-width:240px;margin:auto}}
@media(max-width:620px){.encoding-steps{grid-template-columns:1fr;gap:14px}.encoding-steps>.encoding-arrow:nth-child(4){display:block}.encoding-arrow{transform:rotate(90deg);line-height:1}.encoding-title h3{font-size:21px}.encoding-step img{max-height:140px}.encoding-step strong{margin-top:9px}.step-tag{font-size:14px;margin-bottom:10px}.vae-box{min-height:90px;max-width:220px;margin:auto}.codec-stages.codec-two{grid-template-columns:1fr;gap:25px}.formula-intro h3{font-size:22px}.comparison-slide{padding:12px}.comparison-slide h4{font-size:14px;margin-bottom:14px}.comparison-triplet{gap:6px}.comparison-triplet figcaption{font-size:14px;line-height:1.4}.carousel-controls{gap:9px}.carousel-controls button{padding:6px 10px}.carousel-controls #comparison-pause{font-size:14px}.scale-bands span{font-size:14px}}
@media(prefers-reduced-motion:reduce){.carousel-track{transition:none}}
/* Compact, single-row codec equations. */
.formula-strip{display:grid;grid-template-columns:1fr 1fr 1.9fr;gap:22px;align-items:center;padding:22px 24px;background:#f8f9f4;border:1px solid #d6dece;border-radius:6px;margin-top:24px}.formula-cell{display:flex;align-items:center;gap:18px;min-width:0}.formula-cell>span{font-size:14px;letter-spacing:.1em;color:var(--green);font-weight:600}.formula-cell math{font-size:24px;margin:0}.formula-footnote{font-size:14px;color:var(--muted);line-height:1.7;margin:13px 0 30px}.formula-footnote b{font-weight:500;color:var(--green)}@media(max-width:1050px){.formula-strip{gap:15px;padding:18px}.formula-cell{gap:10px}.formula-cell math{font-size:21px}.formula-cell>span{font-size:14px}}@media(max-width:760px){.formula-strip{grid-template-columns:1fr 1fr;gap:22px}.fusion-cell{grid-column:1/-1;justify-content:center}.formula-cell math{font-size:23px}.formula-cell{justify-content:center}}@media(max-width:390px){.formula-strip{padding:16px 10px;gap:20px 10px}.formula-cell{gap:7px}.formula-cell math{font-size:21px}.formula-footnote{font-size:14px}}

.depth-experiments{margin-top:40px}.depth-experiments h2{font-size:36px;margin:12px 0 28px}.depth-experiments h3{font-size:20px;margin:30px 0 12px}.depth-experiments table{font-variant-numeric:tabular-nums;font-size:14px}.depth-experiments td{white-space:nowrap}.depth-experiments th:first-child{white-space:nowrap}.depth-experiments .note{margin-top:12px}@media(max-width:760px){.depth-experiments h2{font-size:30px}.depth-experiments table{font-size:14px}}

.research-detail .academic-conclusion{font-size:15px;line-height:1.5;color:var(--green);margin:18px 0 14px}.research-detail p strong{font-weight:700;color:#263b30}

/* Academic section hierarchy and persistent contents navigation. */
.section h2,.closing h2{font-size:32px;font-weight:600;letter-spacing:-.035em;line-height:1.2}
.section .split-heading{align-items:start;gap:36px;margin-bottom:32px}
.page-toc{display:block;background:#eeefe9;border-right:1px solid var(--line);z-index:30;color:var(--ink)}
.toc-label{font-size:14px;letter-spacing:.13em;color:var(--muted);font-weight:650;padding:0 12px 16px}
.toc-links{display:flex;flex-direction:column;gap:4px}
.page-toc a{display:block;padding:9px 12px;border-radius:6px;font-size:14px;line-height:1.4;border-left:2px solid transparent}
.page-toc a.toc-sub{padding-left:24px;color:var(--muted);font-size:14px}
.page-toc a:hover{background:#e4e8df}
.page-toc a[aria-current="location"]{background:#dfe7d8;color:var(--green);border-left-color:var(--green);font-weight:650}
@media(min-width:1100px){body{padding-left:216px}.page-toc{position:fixed;left:0;top:0;bottom:0;width:216px;padding:34px 14px;overflow-y:auto}.header nav{display:none}.header{padding:0 38px}}
@media(max-width:1099px){.page-toc{position:sticky;top:0;padding:9px 16px;border-right:0;border-bottom:1px solid var(--line)}.toc-label{display:none}.toc-links{flex-direction:row;overflow-x:auto;gap:4px;scrollbar-width:thin}.page-toc a,.page-toc a.toc-sub{padding:7px 10px;font-size:14px;white-space:nowrap;flex-shrink:0}.section h2,.closing h2{font-size:28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* Collapsible contents leaves the reading canvas full width. */
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