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/* Immersive teaser treatment inspired by modern project pages: the video stays pinned while the paper information is revealed by scrolling. */
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/* Desktop-first paper reveal: centered and intentionally invisible until the visitor scrolls. */
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/* PVBench mark: an object node, measurement orbit, and physical coordinate axis. */
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.brand-mark svg{display:block;width:100%;height:100%;overflow:visible;}
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.site-footer .brand-mark{background:#07111f;border-color:#536b83;}


.ticker-track{width:max-content;justify-content:flex-start;padding-left:24px;animation:domain-marquee 42s linear infinite;}@keyframes domain-marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}@media(prefers-reduced-motion:reduce){.ticker-track{animation:none;}}


/* Readability and the new release preview modules. */
body{font-size:16px}.brand{gap:0}.site-nav nav{font-size:15px;gap:27px}.nav-cta{font-size:15px}.section-kicker{font-size:13px}.ticker-track{font-size:12px;gap:34px}.section-heading>p{font-size:16px}.stat-label{font-size:12px}.stat-card p{font-size:14px}.layer-row p{font-size:14px}.layer-row>b{font-size:12px}.layer-index{font-size:13px}.image-caption{font-size:12px}.panel-label{font-size:12px}.result-note{font-size:14px}.release-card p{font-size:16px}.site-footer{font-size:13px}.footer-links a{font-size:12px}.hero-scroll-note{font-size:12px}

.leaderboard-section{padding-top:110px;padding-bottom:120px}.leaderboard-card{border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 18px 55px #182b3c0a;overflow:hidden}.leaderboard-head{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:25px 28px;border-bottom:1px solid var(--line)}.leaderboard-live{display:flex;align-items:center;gap:9px;color:#3677d8;font:12px 'DM Mono';letter-spacing:.1em}.leaderboard-live i{width:8px;height:8px;border-radius:50%;background:#f4ad62;box-shadow:0 0 0 5px #f4ad6225}.leaderboard-head h3{font-size:25px;margin:10px 0 0;letter-spacing:-.04em}.leaderboard-pending{font:13px 'DM Mono';color:#78889c}.leaderboard-table-wrap{overflow-x:auto}.leaderboard-table{width:100%;border-collapse:collapse;min-width:760px;text-align:left}.leaderboard-table th,.leaderboard-table td{padding:17px 18px;border-bottom:1px solid #e8edf2;font-size:15px}.leaderboard-table th{font:12px 'DM Mono';letter-spacing:.08em;text-transform:uppercase;color:#65778d;background:#f8fafc}.leaderboard-table td:first-child{color:#9ba9b8;font-family:'DM Mono'}.leaderboard-table td:nth-child(3){font-weight:600;color:#253954}.pending-pill{display:inline-flex;padding:4px 9px;border-radius:999px;background:#fff4e4;color:#b06e1d;font:11px 'DM Mono'}.leaderboard-footnote{margin:0;padding:18px 28px 22px;color:#748399;font-size:14px;line-height:1.6}

.comparison-section{padding:120px 0 130px;background:#07111f;color:#fff;position:relative;overflow:hidden}.comparison-section:before{content:'';position:absolute;width:650px;height:650px;right:-290px;top:-270px;border:1px solid #55dcff1d;border-radius:50%;box-shadow:0 0 0 95px #55dcff08,0 0 0 190px #55dcff04}.comparison-app{position:relative;z-index:1;border:1px solid #ffffff1d;border-radius:18px;background:#0c192b;box-shadow:0 25px 70px #0006;overflow:hidden}.comparison-toolbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:19px 22px;border-bottom:1px solid #ffffff16}.comparison-mode,.comparison-nav{display:flex;align-items:center;gap:9px}.comparison-mode>span,.case-index-head{font:12px 'DM Mono';letter-spacing:.08em;color:#91a8c2}.mode-button,.compare-step{border:1px solid #ffffff25;border-radius:7px;padding:9px 12px;background:#ffffff09;color:#bcd0e4;font:13px 'Space Grotesk';cursor:pointer}.mode-button:hover,.mode-button.is-active,.compare-step:hover{background:#ffffff1d;border-color:#64ddff88;color:#fff}.comparison-nav strong{min-width:66px;text-align:center;color:#e8f7ff;font:14px 'DM Mono'}.comparison-status{display:flex;justify-content:space-between;gap:20px;padding:15px 22px;color:#91a8c2;font-size:14px}.comparison-status b{color:#ecfaff}.comparison-status code,.video-case-head code{color:#66defe;font:13px 'DM Mono'}.comparison-video-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px;padding:0 22px}.video-case-card{min-width:0;border:1px solid #ffffff1d;border-radius:12px;background:#101f33;overflow:hidden;transition:opacity .25s,transform .25s}.video-case-head{display:flex;justify-content:space-between;align-items:center;padding:13px 16px;border-bottom:1px solid #ffffff12;color:#aec4d9;font:13px 'DM Mono';letter-spacing:.08em}.video-placeholder{aspect-ratio:16/9;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;background:radial-gradient(circle at 50% 35%,#1c5979 0,#102a42 34%,#0a1526 76%);color:#b2c7db;text-align:center}.video-placeholder strong{font-size:18px;color:#effaff}.video-placeholder>span:last-child{font-size:13px;color:#829bb4}.placeholder-mark{display:grid;place-items:center;width:52px;height:52px;border:1px solid #63dbff66;border-radius:50%;color:#63dbff;font:13px 'DM Mono';letter-spacing:0}.comparison-app[data-focus="t2v"] [data-modality-card="i2v"],.comparison-app[data-focus="i2v"] [data-modality-card="t2v"]{opacity:.42;transform:scale(.985)}.comparison-details{display:grid;grid-template-columns:1fr 1fr 1.7fr;gap:1px;margin:15px 22px 0;border:1px solid #ffffff19;border-radius:12px;overflow:hidden;background:#ffffff19}.comparison-details>div{display:flex;flex-direction:column;gap:7px;padding:18px;background:#101f33}.detail-label{font:11px 'DM Mono';letter-spacing:.1em;color:#7291ae}.comparison-details strong{font-size:17px;color:#f1f8ff}.comparison-details span:not(.detail-label){font-size:14px;color:#93abc1;line-height:1.45}.comparison-prompt p{font-size:15px;line-height:1.55;color:#d7e6f2;margin:0}.case-index-head{display:flex;justify-content:space-between;gap:20px;padding:23px 22px 12px}.case-index-head span:last-child{color:#6e879f;letter-spacing:0}.case-index-grid{display:grid;grid-template-columns:repeat(9,1fr);gap:8px;padding:0 22px 23px}.case-index-button{display:flex;align-items:center;justify-content:space-between;gap:6px;border:1px solid #ffffff1c;border-radius:7px;padding:8px 9px;background:#ffffff08;color:#afc3d7;cursor:pointer}.case-index-button:hover,.case-index-button.is-active{border-color:#67deff99;background:#143c54;color:#fff}.case-index-button span{font:12px 'DM Mono'}.case-index-button small{font:12px 'DM Mono';color:#6f8ba6}.case-index-button.is-active small{color:#73e7ff}
@media(max-width:900px){.site-nav nav{font-size:13px;gap:15px}.comparison-toolbar{align-items:flex-start;flex-direction:column}.comparison-nav{width:100%;justify-content:space-between}.comparison-details{grid-template-columns:1fr 1fr}.comparison-prompt{grid-column:1/-1}.case-index-grid{grid-template-columns:repeat(5,1fr)}}
@media(max-width:560px){.site-nav nav{display:none}.nav-cta{font-size:13px}.section-kicker{font-size:12px}.section-heading>p{font-size:15px}.stat-card p,.layer-row p{font-size:13px}.leaderboard-head{align-items:flex-start;flex-direction:column;padding:22px}.leaderboard-pending{font-size:12px}.leaderboard-table th,.leaderboard-table td{padding:14px 12px;font-size:13px}.leaderboard-footnote{padding:16px 22px 20px;font-size:13px}.comparison-section{padding:85px 0 95px}.comparison-toolbar,.comparison-status{padding-left:16px;padding-right:16px}.comparison-mode{flex-wrap:wrap}.comparison-mode>span{width:100%}.comparison-video-grid{grid-template-columns:1fr;padding:0 16px}.comparison-status{font-size:12px;flex-direction:column;gap:8px}.comparison-details{grid-template-columns:1fr;margin-left:16px;margin-right:16px}.comparison-prompt{grid-column:auto}.case-index-head{padding-left:16px;padding-right:16px;flex-direction:column;gap:8px;font-size:11px}.case-index-grid{grid-template-columns:repeat(3,1fr);padding-left:16px;padding-right:16px}.case-index-button{padding:8px 7px}.case-index-button small{font-size:11px}.video-placeholder strong{font-size:16px}}
.case-index-grid{grid-template-columns:repeat(5,1fr)}.case-index-button{flex-direction:column;align-items:flex-start}.case-index-button .case-index-source{font-size:11px;color:#83a1bd;letter-spacing:0}.case-index-button.is-active .case-index-source{color:#8eeaff}@media(max-width:900px){.case-index-grid{grid-template-columns:repeat(4,1fr)}}@media(max-width:560px){.case-index-grid{grid-template-columns:repeat(2,1fr)}.case-index-button .case-index-source{font-size:10px}}
/* Five-model comparison grid. */
.comparison-video-grid{grid-template-columns:repeat(5,1fr)}.video-case-card{min-width:0}.video-case-head{min-height:52px;letter-spacing:0}.video-case-head span{font:600 14px 'Space Grotesk';color:#e6f5ff}.video-placeholder{min-height:190px}.video-placeholder strong{font-size:16px}.video-placeholder>span:last-child{font-size:12px;line-height:1.4;padding:0 12px}.model-seedance25 .video-case-head{border-top:2px solid #ffbf74}.model-minimax-h3 .video-case-head{border-top:2px solid #63dcff}.model-wan21 .video-case-head{border-top:2px solid #9d82ff}.model-wan22 .video-case-head{border-top:2px solid #75e3b9}.model-lingbot .video-case-head{border-top:2px solid #f78cae}.comparison-app[data-modality="i2v"] .model-lingbot .video-placeholder{background:radial-gradient(circle at 50% 35%,#3a3e75 0,#20223f 34%,#111426 76%)}.case-index-button .case-index-source{white-space:nowrap}
@media(max-width:1200px){.comparison-video-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:900px){.comparison-video-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.comparison-video-grid{grid-template-columns:1fr}.video-placeholder{min-height:230px}}
/* Local comparison videos. */
.video-frame{background:#071321;aspect-ratio:16/9}.comparison-video{display:block;width:100%;height:100%;object-fit:cover;background:#071321}.video-meta{display:flex;flex-direction:column;gap:4px;padding:10px 13px 13px;background:#101f33}.video-meta strong{font-size:14px;color:#e8f7ff}.video-meta span{font-size:12px;line-height:1.35;color:#8da8c0}.video-case-card{overflow:hidden}.video-placeholder{aspect-ratio:auto;min-height:0}.video-placeholder strong,.video-placeholder>span{display:none}@media(max-width:560px){.video-meta strong{font-size:15px}.video-meta span{font-size:13px}}

/* Merged evaluation + leaderboard presentation. */
.results-single{grid-template-columns:1fr}.results-single .result-panel{padding:18px}.results-single .result-note{margin-top:16px}.results-leaderboard{margin-top:48px}.results-leaderboard .leaderboard-head{background:#fff}.results-leaderboard .leaderboard-live i{background:var(--green);box-shadow:0 0 0 5px #76e6bd25}.results-leaderboard .leaderboard-pending{color:#5d7188}.leaderboard-table{min-width:1040px}.leaderboard-table th,.leaderboard-table td{padding:14px 16px}.leaderboard-table thead tr:first-child th{background:#edf4fb;color:#314b68;text-align:center;font:600 12px 'Space Grotesk';letter-spacing:.03em;text-transform:none}.leaderboard-table thead tr:nth-child(2) th{background:#f8fafc;text-align:center}.leaderboard-table td{text-align:center;font-variant-numeric:tabular-nums}.leaderboard-table td:first-child{font:600 12px 'DM Mono';color:#52708d;text-align:left}.leaderboard-table td:nth-child(2){text-align:left;font-weight:600;color:#253954;white-space:nowrap}.leaderboard-table tbody tr.config-break td{border-top:2px solid #cbd8e5}.leaderboard-table tbody tr.leaderboard-highlight td{background:#f3f8ff}.leaderboard-table td strong{color:#1f62d5}.leaderboard-table td sup,.leaderboard-footnote sup{color:#ba6f2b;font:600 11px 'DM Mono';margin-left:1px}.results-leaderboard .leaderboard-footnote{font-size:13px}.results-leaderboard .leaderboard-footnote strong{color:#1f62d5}@media(max-width:560px){.results-leaderboard{margin-top:35px}.results-leaderboard .leaderboard-head{padding:22px}.results-leaderboard .leaderboard-table th,.results-leaderboard .leaderboard-table td{padding:13px 12px}.results-leaderboard .leaderboard-footnote{font-size:13px}}

/* Keep every leaderboard score visible on desktop and apply one consistent type system to model names. */
.results-leaderboard .leaderboard-table{min-width:0;width:100%;table-layout:auto}.results-leaderboard .leaderboard-table td{font:15px 'Space Grotesk',system-ui,sans-serif;text-align:center;color:#253954;font-variant-numeric:tabular-nums}.results-leaderboard .leaderboard-table td.config-name{font:600 12px 'DM Mono',monospace;color:#52708d;text-align:left}.results-leaderboard .leaderboard-table td.model-name{font:600 15px 'Space Grotesk',system-ui,sans-serif;color:#253954;text-align:left;white-space:nowrap}.results-leaderboard .leaderboard-table td strong{font:700 15px 'Space Grotesk',system-ui,sans-serif;color:#1f62d5}.results-leaderboard .leaderboard-table td sup{font-family:'DM Mono',monospace}@media(max-width:1100px){.results-leaderboard .leaderboard-table td.model-name{white-space:normal;word-break:keep-all}}

/* Center the benchmark taxonomy figure, then place its layer descriptions below. */
.taxonomy-layout{display:flex;flex-direction:column;align-items:stretch;gap:32px}.taxonomy-visual{order:1;width:100%;max-width:1180px;margin:0 auto;padding:16px}.taxonomy-copy{order:2;width:100%;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.taxonomy-copy .layer-row{min-height:154px}
@media(max-width:900px){.taxonomy-copy{grid-template-columns:1fr}.taxonomy-copy .layer-row{min-height:0}}

/* Readability, complete navigation, and consistent layer interactions. */
.hero-authors{font-size:17px;line-height:1.8}.hero-authors span{font-size:15px}.taxonomy-copy .layer-row{cursor:pointer;transition:background .25s,transform .25s,box-shadow .25s,border-color .25s}.taxonomy-copy .layer-row:hover,.taxonomy-copy .layer-row.active{background:#ffffff16;transform:translateY(-6px);box-shadow:0 14px 30px #0004}.taxonomy-methods{grid-column:1/-1;margin-top:2px;padding:18px 20px;border:1px solid #ffffff18;border-radius:12px;background:#ffffff08;color:#9eb3c8;text-align:center}.taxonomy-methods .method-label{display:block;margin-bottom:8px;font:12px 'DM Mono';letter-spacing:.13em;color:#77e4ca}.taxonomy-methods p{margin:0;font-size:15px;line-height:1.55}.taxonomy-methods strong{color:#e9f7ff;font-weight:600}@media(max-width:560px){.hero-authors{font-size:15px}.hero-authors span{font-size:14px}.taxonomy-methods{padding:16px}.taxonomy-methods p{font-size:14px}}

/* Prompt distribution figure added from the paper's Figure 3. */
.pipeline-card + .pipeline-card{margin-top:24px}


/* Clear, premium navigation while scrolling. */
.site-nav{background:transparent;isolation:isolate}
.site-nav::before{content:"";position:fixed;inset:0 0 auto;height:84px;z-index:-1;background:rgba(5,12,24,.94);backdrop-filter:blur(18px) saturate(145%);-webkit-backdrop-filter:blur(18px) saturate(145%);border-bottom:1px solid rgba(151,190,223,.16);box-shadow:0 10px 30px rgba(0,0,0,.16)}
.site-nav .brand{display:flex;align-items:baseline;gap:0;font-size:23px;font-weight:700;letter-spacing:-.075em;line-height:1;color:#f4f8ff;text-shadow:0 0 22px rgba(85,220,255,.16)}
.site-nav .brand-pv{color:#65dcff}
.site-nav .brand-bench{color:#f2f7ff}
.site-nav nav{color:#c5d5e6}
.site-nav nav a{position:relative;color:#c5d5e6;font-weight:500;transition:color .2s ease}
.site-nav nav a:hover{color:#70e3ff}
.site-nav nav a::after{content:"";position:absolute;left:0;right:100%;bottom:-7px;height:2px;border-radius:2px;background:linear-gradient(90deg,#56ddff,#a88aff);transition:right .2s ease}
.site-nav nav a:hover::after{right:0}
.site-nav .nav-cta{color:#eaf6ff;background:rgba(255,255,255,.07);border-color:rgba(191,222,245,.3);transition:background .2s,border-color .2s,transform .2s}
.site-nav .nav-cta:hover{background:rgba(93,216,255,.12);border-color:rgba(93,216,255,.55);transform:translateY(-1px)}
.site-nav .nav-cta span{color:#70e3ff}
@media(max-width:900px){.site-nav::before{height:84px}.site-nav .brand{font-size:21px}}


/* Distinctive PVBench wordmark: technical P, expressive V, refined Bench. */
.site-nav .brand{gap:0;letter-spacing:-.06em}
.site-nav .brand-p{font-family:'Space Grotesk',sans-serif;font-weight:700;color:#69e2ff;text-shadow:0 0 18px rgba(89,218,255,.38)}
.site-nav .brand-v{margin-left:-.025em;font-family:Georgia,'Times New Roman',serif;font-size:1.16em;font-style:italic;font-weight:700;letter-spacing:-.12em;color:#b49aff;text-shadow:0 0 18px rgba(180,154,255,.3);transform:translateY(-.015em)}
.site-nav .brand-bench{margin-left:.10em;font-family:'Space Grotesk',sans-serif;font-size:.91em;font-weight:600;letter-spacing:-.045em;color:#f5f8ff}


/* Author layout: six names on row one, two corresponding contacts on row two. */
.hero-paper-info .hero-authors{margin:22px auto 0;text-align:center;font-size:16px;line-height:1.8;color:#c5d5e6}
.author-row{display:flex;justify-content:center;align-items:baseline;flex-wrap:wrap;column-gap:19px;row-gap:2px}
.author-row>span{white-space:nowrap}
.author-row-last{margin-top:1px;column-gap:25px}
.author-affiliations{margin-top:7px;color:#91a9be;font-size:.88em}
.author-email{position:relative;top:-.38em;margin-left:2px;font-size:.78em}
.author-email a{color:#71e2ff;text-decoration:none;transition:color .2s,text-shadow .2s}
.author-email a:hover{color:#d5c2ff;text-shadow:0 0 9px #9f7cff}
@media(max-width:900px){.hero-paper-info .hero-authors{font-size:14px}.author-row{column-gap:13px}}
@media(max-width:560px){.hero-paper-info .hero-authors{font-size:12px}.author-row{column-gap:9px}.author-affiliations{font-size:10px;line-height:1.55}}