.vp-page{padding-top:35px}.vp-page .breadcrumb{margin-bottom:28px}.vp-hero{display:grid;grid-template-columns:1fr 1.15fr;gap:55px;align-items:center;padding:15px 0 60px;scroll-margin-top:24px}.vp-hero h1{font-size:clamp(48px,5.3vw,78px);margin-bottom:28px}.vp-intro{font-size:clamp(24px,2.15vw,32px);line-height:1.25;letter-spacing:-.7px;margin-bottom:22px}.vp-description{font-size:17px;color:var(--muted);line-height:1.7;max-width:470px}.vp-hero-image{margin:0;position:relative;background:#101b1b;overflow:hidden;min-width:0}.vp-hero-image img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;object-position:center}.vp-hero-image figcaption{background:var(--brand-dark);color:#fff;padding:17px 20px;font-size:13px;line-height:1.4}.vp-actions{display:flex;gap:12px;flex-wrap:wrap;padding-top:16px}.vp-primary,.vp-secondary{display:inline-flex;align-items:center;justify-content:center;padding:15px 20px;border-radius:3px;font-size:15px;line-height:1.4;border:1px solid var(--brand)}.vp-primary{background:var(--brand);color:white}.vp-primary:hover{background:var(--brand-hover)}.vp-secondary:hover{background:var(--brand-soft)}.vp-section-nav{display:flex;gap:38px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0;flex-wrap:wrap;font-size:15px}.vp-section-nav a{padding:9px 0}.vp-section{padding:65px 0;border-bottom:1px solid var(--line);scroll-margin-top:25px}.vp-section-heading{display:flex;justify-content:space-between;gap:40px;align-items:end;margin-bottom:36px}.vp-section-heading .eyebrow{margin-bottom:16px}.vp-section h2,.vp-source h2{font-size:clamp(30px,3vw,46px);letter-spacing:-1.6px;font-weight:450;line-height:1.13;margin:0}.vp-section-heading>p{max-width:365px;color:var(--muted);font-size:16px;line-height:1.65;margin:0}.vp-videos{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:35px 25px}.vp-video-card{min-width:0}.vp-video-card video{width:100%;aspect-ratio:16/9;object-fit:contain;background:#071311;display:block;border-radius:3px}.vp-video-meta{font-size:13px;color:var(--muted);margin:18px 0 10px}.vp-video-card h3,.vp-external-video h3{font-size:24px;line-height:1.25;font-weight:500;letter-spacing:-.6px;margin:0 0 10px}.vp-video-card p{font-size:16px;line-height:1.6;color:var(--muted);margin:0;max-width:570px}.vp-playback-message a{text-decoration:underline}.vp-video-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:35px}.vp-external-video{border:1px solid var(--line);padding:24px;display:flex;flex-direction:column;align-items:flex-start;gap:12px}.vp-external-video .text-link{margin-top:auto}.vp-external-video p{font-size:14px;color:var(--muted)}.vp-external-video h3{font-size:20px}.vp-file-label{font-size:12px;text-transform:uppercase;letter-spacing:.06em;font-weight:600;color:var(--brand);padding:7px 9px;background:var(--brand-soft);align-self:start}.vp-document-group{margin-top:32px}.vp-document-group>h3{font-size:18px;font-weight:550;margin-bottom:15px}.vp-documents{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.vp-document{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:18px;align-items:center;padding:25px;border:1px solid var(--line);border-radius:3px;min-width:0;transition:background .15s}.vp-document:hover{background:var(--brand-soft)}.vp-document strong{overflow-wrap:anywhere;display:block;font-size:17px;font-weight:500;line-height:1.4}.vp-resource-meta{display:block;font-size:13px;line-height:1.5;color:var(--muted);margin:8px 0 0}.vp-open{font-size:14px;text-decoration:underline;text-underline-offset:3px}.vp-years{display:flex;flex-wrap:wrap;gap:10px;margin:35px 0 15px}.vp-years a{padding:10px 15px;background:var(--brand-soft);border-radius:2px;font-size:14px}.vp-years a:hover{background:var(--brand-soft-hover)}.vp-research-year{display:grid;grid-template-columns:110px 1fr;gap:30px;padding-top:30px;scroll-margin-top:25px}.vp-research-year>h3{font-size:31px;font-weight:450;letter-spacing:-1px;margin:20px 0}.vp-paper{padding:24px 0;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr auto;gap:30px}.vp-paper .vp-resource-meta{margin:0 0 10px}.vp-paper h4{font-weight:500;font-size:20px;line-height:1.4;letter-spacing:-.3px;margin:0 0 12px;max-width:780px}.vp-paper h4 a:hover{text-decoration:underline;text-underline-offset:4px}.vp-authors{font-size:14px;line-height:1.6;color:var(--muted);margin:0}.vp-paper-actions{display:flex;flex-direction:column;gap:15px;min-width:102px;font-size:14px;padding-top:5px}.vp-paper-actions a{text-decoration:underline;text-underline-offset:4px}.vp-paper-actions span{display:block;font-size:12px;color:var(--muted);margin-top:7px;text-decoration:none}.vp-source{padding:50px 0 65px}.vp-source h2{font-size:30px;letter-spacing:-.8px;margin-bottom:15px}.vp-source p{font-size:16px;color:var(--muted);line-height:1.6}.vp-page .eyebrow{font-size:13px}
@media(max-width:1000px){.vp-hero{gap:30px}.vp-actions{flex-direction:column;align-items:start}.vp-video-links{grid-template-columns:repeat(2,minmax(0,1fr))}.vp-document{padding:20px;gap:12px}.vp-document .vp-open{display:none}.vp-research-year{grid-template-columns:75px 1fr;gap:20px}}
@media(max-width:700px){.vp-hero{grid-template-columns:1fr;padding-bottom:35px;gap:30px}.vp-hero h1{font-size:55px;letter-spacing:-3px}.vp-intro{font-size:28px}.vp-hero-image img{height:auto;aspect-ratio:3/2}.vp-actions{flex-direction:row}.vp-section-nav{gap:12px 23px;font-size:14px}.vp-section{padding:40px 0}.vp-section-heading{display:block;margin-bottom:25px}.vp-section-heading>p{margin-top:20px;max-width:100%}.vp-videos,.vp-documents,.vp-video-links{grid-template-columns:1fr}.vp-video-card h3{font-size:23px}.vp-research-year{grid-template-columns:1fr;gap:0}.vp-research-year>h3{font-size:30px;margin:0 0 18px}.vp-paper{grid-template-columns:1fr;gap:12px}.vp-paper-actions{flex-direction:row;gap:25px}.vp-paper-actions span{display:inline;margin-left:7px}.vp-paper h4{font-size:19px}.vp-document{padding:20px 16px}.vp-document .vp-open{display:inline}.vp-page{padding-top:25px}.vp-description{font-size:16px}.vp-source{padding:40px 0 45px}}
.vp-supplements{grid-column:1/-1;margin-top:2px}.vp-supplements summary{cursor:pointer;font-size:14px;font-weight:500;list-style-position:inside;padding:10px 0}.vp-supplements summary span{font-weight:400;color:var(--muted);margin-left:10px}.vp-supplement-content{padding:16px 0 5px}.vp-supplement-content .vp-documents{margin-bottom:20px}.vp-supplement-content .vp-document{padding:16px}.vp-supplement-content .vp-document strong{font-size:14px;overflow-wrap:anywhere}.vp-supplement-content .vp-videos{gap:24px}.vp-supplement-content .vp-video-card h3{font-size:18px}.vp-supplement-content .vp-video-card p{font-size:14px}
.vp-video-group+.vp-video-group{margin-top:45px}.vp-group-title{font-size:19px;font-weight:500;letter-spacing:-.25px;margin:0 0 20px}.vp-video-group .vp-video-links{margin-top:0}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}}
.vp-research-tools{max-width:600px;margin:0 0 12px}.vp-research-tools label{display:block;font-size:14px;font-weight:500;margin-bottom:10px}.vp-research-tools input{font:inherit;width:100%;border:1px solid var(--control-line);border-radius:3px;padding:14px 16px;background:#fff;color:var(--ink);font-size:16px}.vp-research-tools input:focus-visible{outline:2px solid var(--brand);outline-offset:3px}.vp-research-tools p{font-size:14px;color:var(--muted);margin:10px 0 0;min-height:20px}.vp-research-tools[hidden],.vp-paper[hidden],.vp-research-year[hidden],.vp-years a[hidden]{display:none}

.vp-evidence-note{font-size:.88rem;color:var(--muted);line-height:1.6;margin:12px 0 0}.vp-versions{grid-column:1/-1;font-size:.84rem}.vp-versions a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}.vp-hero-image figcaption a{color:inherit}.vp-hero-image figcaption{line-height:1.5}

.vp-research-figure img{object-fit:contain;background:#fff}
.vp-external-literature{margin-top:48px;padding:38px;background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--control-line)}.vp-external-literature .vp-section-heading{align-items:start}.vp-external-literature .vp-section-heading>p{max-width:440px}.vp-external-literature h2{font-size:clamp(28px,2.8vw,40px)}.vp-external-literature .vp-evidence-note{color:var(--muted)}.vp-external-paper:last-child{padding-bottom:0}@media(max-width:700px){.vp-external-literature{padding:25px 20px;margin-top:28px}.vp-external-literature .vp-paper-actions{flex-wrap:wrap}}

.vp-primary{gap:13px}.vp-simulator{margin:42px 0 0;padding:40px;background:var(--brand-soft);border:1px solid var(--brand-line);display:grid;grid-template-columns:1fr 1.15fr;gap:55px;align-items:center;scroll-margin-top:25px}.vp-simulator h2{font-size:clamp(28px,3vw,42px);font-weight:450;letter-spacing:-1.2px;line-height:1.15;margin:0}.vp-simulator .eyebrow{margin:0 0 18px}.vp-simulator-copy>p{font-size:16px;line-height:1.65;margin:0 0 18px;color:var(--muted)}.vp-simulator-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}.vp-simulator-tags span{font-size:12px;padding:7px 10px;border:1px solid var(--brand-line);border-radius:3px}.vp-simulator-copy .vp-simulator-note{font-size:14px;margin:13px 0 0;color:var(--muted)}@media(max-width:700px){.vp-simulator{grid-template-columns:1fr;gap:25px;padding:26px;margin-top:28px}.vp-simulator h2{font-size:34px}.vp-simulator .vp-primary{width:100%;font-size:14px}}
.vp-section-nav .vp-research-nav{font-weight:600;color:var(--brand);border-bottom:2px solid var(--brand-detail)}.vp-research-route{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;margin-bottom:30px;font-size:14px;line-height:1.5}.vp-research-route a{text-decoration:underline;text-underline-offset:4px;color:var(--brand)}.vp-research-route a:hover{color:var(--brand-hover)}

/* Credited videos and reciprocal story links. */
.vp-video-card[id]{scroll-margin-top:110px}.vp-video-actions{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:16px;font-size:.86rem;line-height:1.5}.vp-video-actions a{color:var(--teal,var(--brand));text-decoration:underline;text-underline-offset:4px}.vp-video-poster{position:relative;display:block;aspect-ratio:16/9;background:#0c181b;border-radius:8px;overflow:hidden}.vp-video-poster img{width:100%;height:100%;object-fit:contain}.vp-video-poster span{position:absolute;bottom:16px;left:16px;background:#fff;color:var(--brand-dark);padding:10px 15px;border-radius:30px;font-size:.85rem}.vp-channel-link{margin:20px 0 36px}.vp-video-meta{overflow-wrap:anywhere}