@font-face {
  font-family: "NVIDIA Sans";
  src: url("https://images.nvidia.com/etc/designs/nvidiaGDC/clientlibs_base/fonts/nvidia-sans/GLOBAL/var/NVIDIASansVF_W_Wght.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

/* cuRoboV2-Fast project page: the SceneFields page layout, with the presentation palette and type. */
:root{
  --ink:#171a1c;--muted:#5d656b;--green:#456f00;--green-tint:#edf4e2;--card:#f1f2ef;--border:#dddfd7;
  --page:1200px;--text:760px;--prose:860px;--header:60px;
  font-family:"NVIDIA Sans",Arial,Helvetica,sans-serif;
  color:var(--ink);background:#ffffff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header) + 16px)}
body{margin:0;line-height:1.6;font-size:17px;-webkit-font-smoothing:antialiased}
a{color:var(--green)}
img,video{display:block;max-width:100%}
h1,h2,h3{font-weight:500;line-height:1.2;margin:0}

/* Floating header */
.site-header{position:sticky;top:0;z-index:10;height:var(--header);background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s}
.site-header.scrolled{border-bottom-color:var(--border);box-shadow:0 2px 12px rgba(25,32,22,.06)}
.header-inner{max-width:var(--page);height:100%;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-weight:600;font-size:18px}
.brand img{height:28px;width:auto}
.header-nav{display:flex;gap:22px;margin-left:auto}
.header-nav a{color:var(--muted);text-decoration:none;font-size:15px}
.header-nav a:hover,.header-nav a.active{color:var(--ink)}
.header-links{display:flex;gap:10px}

/* Buttons */
.button{display:inline-flex;align-items:center;justify-content:center;min-width:84px;padding:8px 18px;border-radius:999px;
  background:var(--green);border:1px solid var(--green);color:#ffffff;text-decoration:none;font-size:15px;font-weight:500;transition:background .15s,color .15s}
.button:hover{background:#345600}
.button-outline{background:#ffffff;color:var(--ink);border-color:var(--border)}
.button-outline:hover{background:var(--green-tint);border-color:var(--green)}

/* Hero */
.hero{max-width:var(--page);margin:0 auto;padding:64px 24px 24px;text-align:center}
.hero-logo{width:min(420px,80%);height:auto;margin:0 auto 28px}
.hero h1{text-wrap:balance;font-size:clamp(30px,4.2vw,46px);max-width:900px;margin:0 auto}
.authors{font-size:19px;margin:18px 0 10px}
.authors a{white-space:nowrap}
.affiliation{height:24px;width:auto;margin:0 auto}
.hero-links{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin:28px 0}
.stats{list-style:none;padding:0;margin:40px auto 0;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:1080px}
.stats li{background:var(--card);border-radius:14px;padding:18px 12px;display:flex;flex-direction:column;align-items:center;gap:2px}
.stats strong{font-size:30px;font-weight:500;line-height:1.2;color:var(--green)}
.stats span{font-size:14px;color:var(--muted);line-height:1.3}

/* Sections */
.section{max-width:var(--page);margin:0 auto;padding:72px 24px 8px}
.section>h2{font-size:34px}
.section-video{padding-top:48px}
/* Prose (abstract, approach introduction, slide text, BibTeX): one width, colour and size. */
.lead{max-width:var(--prose);margin:16px 0 32px;font-size:18px}
.feature-video{width:100%;height:auto;aspect-ratio:16/9;border-radius:14px;background:#000;box-shadow:0 8px 32px rgba(25,32,22,.14)}

.pillars{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:24px}
.pillars article{background:var(--card);border-radius:14px;padding:24px}
.pillars h3{font-size:20px;margin-bottom:8px}
.pillars p{margin:0;color:var(--muted);font-size:16px}

.feature{padding:48px 0 8px;border-top:1px solid var(--border);margin-top:40px}
.feature h3{font-size:26px;margin-bottom:16px}
.panel h4{font-size:20px;font-weight:500;margin:4px 0 6px}
.panel p{max-width:var(--prose);margin:0 0 20px;font-size:18px}
.abstract{max-width:var(--prose);margin:16px 0 0;font-size:18px}

/* Clips: muted, looping; play only while visible */
.clip{margin:0;border-radius:12px;overflow:hidden;background:var(--card);box-shadow:0 6px 24px rgba(25,32,22,.10)}
.clip video{width:100%;height:auto}
.clip[data-renderer="video"]{position:relative}
.clip-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:grid;place-items:center;width:56px;height:56px;padding:12px;border:1px solid #ffffffb3;border-radius:50%;background:#000b;color:#fff;cursor:pointer}
.clip-play svg{width:100%;height:100%}
.clip-play[hidden]{display:none}

/* Tabs for sections with several clips */
.tabs{display:inline-flex;gap:4px;padding:4px;background:var(--card);border-radius:999px;margin-bottom:16px}
.tabs button{font:inherit;font-size:15px;white-space:nowrap;border:0;background:transparent;color:var(--muted);padding:6px 16px;border-radius:999px;cursor:pointer}
.tabs button[aria-selected="true"]{background:#ffffff;color:var(--ink);box-shadow:0 1px 4px rgba(25,32,22,.12)}
.tabs button:focus-visible,.button:focus-visible{outline:2px solid var(--green);outline-offset:3px}

/* Demo gallery */
.demo-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px 28px}
.demo h3{font-size:20px;margin:14px 0 4px}
.demo p{margin:0;color:var(--muted);font-size:16px}
/* Same 16:9 frame for every demo, so rows line up (the two-camera clip is 2:1). */
.demo .clip{aspect-ratio:16/9;background:#ffffff}
.demo .clip video{width:100%;height:100%;object-fit:contain}

/* BibTeX */
.bibtex{position:relative;max-width:var(--prose);margin:20px 0 0}
.bibtex pre{background:var(--card);border-radius:12px;padding:24px;overflow-x:auto;font-size:14px;line-height:1.55;margin:0}
.copy{position:absolute;top:12px;right:12px;font:inherit;font-size:13px;border:1px solid var(--border);background:#ffffff;border-radius:999px;padding:4px 14px;cursor:pointer}
.copy:hover{border-color:var(--green)}


.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:var(--ink);color:#ffffff;padding:10px 18px;border-radius:999px;font-size:14px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media (max-width:960px){
  .header-nav{display:none}
  .header-links{margin-left:auto}
}
@media (max-width:860px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .pillars,.demo-grid{grid-template-columns:1fr}
  .tabs{display:flex;flex-wrap:nowrap;max-width:100%;overflow-x:auto;scrollbar-width:none}
  .section{padding-top:56px}
}
@media (max-width:480px){
  .header-inner{gap:8px;padding:0 12px}
  .brand{font-size:16px}
  .header-links{gap:6px}
  .header-links .button{padding:7px 8px;font-size:13px}
  .button{min-width:0;padding:7px 14px}
  .feature h3{font-size:22px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.footnote{max-width:var(--prose);margin:10px 0 0;font-size:13px;line-height:1.5;color:var(--muted)}
.stats+.footnote{margin:14px auto 0;text-align:center}
.panel p.footnote{margin:-12px 0 20px;font-size:13px}
.demo-grid+.footnote{margin-top:28px}

.skip-link {
  position: absolute; top: -4rem; left: 0.75rem; z-index: 10;
  padding: 0.5rem 0.75rem; background: var(--nv-green); color: #000; font-weight: 700;
}
.skip-link:focus { top: 0.75rem; }

/* LPR bar */
.lpr-bar { background: #000; }
.lpr-bar-inner {
  display: flex; align-items: center; gap: 0.9rem;
  max-width: var(--page); min-height: 3.25rem; margin: 0 auto; padding: 0 1.25rem;
}
.lpr-logo { display: block; color: #fff; }
.lpr-logo svg { display: block; width: 6.75rem; height: 1.25rem; }
.lpr-divider { width: 1px; height: 1.25rem; background: #4d5358; }
.lpr-lab { color: #fff; font-size: 0.875rem; font-weight: 700; letter-spacing: 0.01em; text-decoration: none; }
.lpr-lab:hover { color: var(--nv-green); }

/* Footer */
.lpr-footer { margin-top: 4rem; border-top: 1px solid var(--border); background: #f5f6f6; color: var(--muted); font-size: 0.8125rem; }
.lpr-footer-inner { max-width: var(--page); margin: 0 auto; padding: 1.75rem 1.25rem 2.25rem; }
.lpr-footer p { margin: 0 0 0.75rem; }
.lpr-footer a { color: var(--muted); }
.lpr-footer .legal { display: flex; flex-wrap: wrap; gap: 0.35rem 1.1rem; margin-bottom: 0.75rem; }

@media (max-width:640px){
  .lpr-bar-inner{gap:.7rem}
  .lpr-logo svg{width:5.5rem;height:1rem}
  .lpr-lab{font-size:.75rem}
}
:focus-visible{outline:3px solid #3d7fc2;outline-offset:2px}

/* Featured footage preview: preserve the supplied framing and label actual playback speed. */
.hero-teasers{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin:28px auto 0}
.hero-teaser{width:100%;min-width:0;margin:0;background:#fff}
.hero-teaser video{width:100%;height:auto;object-fit:contain;background:#fff}
.section-video>h2{margin-bottom:20px}
.additional-demos{margin-top:40px;padding-top:32px;border-top:1px solid var(--border)}
.additional-demos .clip{aspect-ratio:auto}
.additional-demos .clip video{width:100%;height:auto;object-fit:contain}
@media(max-width:860px){.hero-teasers{grid-template-columns:1fr;max-width:640px}}