:root{--vr-bg:#f6f3ec;--vr-paper:#fffdf8;--vr-text:#25221e;--vr-muted:#746e64;--vr-border:#ddd6c9;--vr-link:#79552f;--vr-content-width:820px;--vr-fact-bg:#f1f6ef;--vr-fact-border:#647b59;--vr-hypothesis-bg:#fff7e7;--vr-hypothesis-border:#a46f1d;--vr-unknown-bg:#f4f2f0;--vr-unknown-border:#766e66;--vr-method-bg:#eef3f5;--vr-method-border:#557580}*,*::before,*::after{box-sizing:border-box}html{margin:0;padding:0;scroll-behavior:smooth}body.vahac-research-page{margin:0;padding:0;background:var(--vr-bg);color:var(--vr-text);font-family:Georgia,"Times New Roman",serif;font-size:18px;line-height:1.75}.vr-page{width:100%;min-height:100vh;padding:64px 24px 80px}.vr-header{max-width:1000px;margin:0 auto 60px;text-align:center}.vr-type{margin-bottom:20px;color:var(--vr-muted);font-family:Arial,sans-serif;font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase}.vr-title{margin:0;color:var(--vr-text);font-size:clamp(42px, 6vw, 72px);font-weight:500;line-height:1.08}.vr-lead{max-width:760px;margin:28px auto 0;color:var(--vr-muted);font-size:22px;line-height:1.5}.vr-lead p{margin:0}.vr-hero{max-width:1100px;margin:0 auto 64px}.vr-hero img{display:block;width:100%;height:auto}.vr-layout{display:grid;grid-template-columns:250px minmax(0,var(--vr-content-width));gap:64px;max-width:1150px;margin:0 auto;align-items:start}.vr-sidebar{position:sticky;top:24px;align-self:start;min-width:0;height:fit-content;max-height:calc(100vh - 48px);overflow-y:auto;scrollbar-width:thin}.vr-toc-container{padding-right:12px}.vr-toc-title{margin-bottom:18px;color:var(--vr-text);font-family:Arial,sans-serif;font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}.vr-toc ul{margin:0;padding:0;list-style:none}.vr-toc li{margin:0;padding:0;border-left:1px solid var(--vr-border)}.vr-toc li.vr-toc-h3{padding-left:14px}.vr-toc a{display:block;padding:7px 8px 7px 14px;color:var(--vr-muted);font-family:Arial,sans-serif;font-size:14px;line-height:1.4;text-decoration:none;transition:color 0.15s ease,border-color 0.15s ease,background 0.15s ease}.vr-toc a:hover{color:var(--vr-link)}.vr-toc a.is-active{margin-left:-1px;border-left:2px solid var(--vr-link);color:var(--vr-link);font-weight:700}.vr-content{width:100%;min-width:0;padding:48px;background:var(--vr-paper)}.vr-content p{margin:0 0 24px}.vr-content h2,.vr-content h3{scroll-margin-top:32px}.vr-content h2{margin:64px 0 24px;padding-top:24px;border-top:1px solid var(--vr-border);color:var(--vr-text);font-size:34px;font-weight:600;line-height:1.25}.vr-content h2:first-child{margin-top:0}.vr-content h3{margin:44px 0 18px;color:var(--vr-text);font-size:26px;font-weight:600;line-height:1.3}.vr-content h4{margin:36px 0 16px;font-size:21px}.vr-content a{color:var(--vr-link);text-decoration-thickness:1px;text-underline-offset:3px}.vr-content strong{font-weight:700}.vr-content img{max-width:100%;height:auto}.vr-content figure{margin:40px 0}.vr-content figcaption{margin-top:10px;color:var(--vr-muted);font-family:Arial,sans-serif;font-size:14px;line-height:1.5}.vr-content blockquote{margin:36px 0;padding:8px 0 8px 28px;border-left:3px solid var(--vr-link);color:var(--vr-muted);font-style:italic}.vr-content ul,.vr-content ol{margin:0 0 28px;padding-left:30px}.vr-content li{margin-bottom:8px}.vr-content hr{margin:56px 0;border:0;border-top:1px solid var(--vr-border)}.vr-content table{width:100%;border-collapse:collapse;margin:32px 0;font-family:Arial,sans-serif;font-size:15px}.vr-content th,.vr-content td{padding:12px;border:1px solid var(--vr-border);text-align:left}.vr-note{position:relative;margin:34px 0;padding:24px 26px 20px;border:1px solid var(--vr-border);border-left-width:4px}.vr-note::before{display:block;margin-bottom:10px;font-family:Arial,sans-serif;font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}.vr-note p:last-child{margin-bottom:0}.vr-note-method{background:var(--vr-method-bg);border-left-color:var(--vr-method-border)}.vr-note-method::before{content:"Approach to sources";color:var(--vr-method-border)}.vr-note-fact{background:var(--vr-fact-bg);border-left-color:var(--vr-fact-border)}.vr-note-fact::before{content:"Established fact";color:var(--vr-fact-border)}.vr-note-hypothesis{background:var(--vr-hypothesis-bg);border-left-color:var(--vr-hypothesis-border)}.vr-note-hypothesis::before{content:"Hypothesis";color:var(--vr-hypothesis-border)}.vr-note-unknown{background:var(--vr-unknown-bg);border-left-color:var(--vr-unknown-border)}.vr-note-unknown::before{content:"Not established yet";color:var(--vr-unknown-border)}.vr-timeline{margin:48px 0 58px;padding:30px 30px 16px;border:1px solid var(--vr-border);background:#faf7f0}.vr-timeline-title{margin:0 0 26px!important;padding:0!important;border:0!important;font-size:28px!important}.vr-timeline-item{position:relative;margin-left:8px;padding:0 0 24px 28px;border-left:1px solid var(--vr-border)}.vr-timeline-item::before{content:"";position:absolute;left:-5px;top:8px;width:9px;height:9px;border-radius:50%;background:var(--vr-link)}.vr-timeline-item:last-child{padding-bottom:4px}.vr-timeline-year{margin:0 0 4px!important;color:var(--vr-link);font-family:Arial,sans-serif;font-size:14px;font-weight:800}.vr-timeline-text{margin:0!important}.vr-content .vr-sources-list{padding-left:26px}.vr-content .vr-sources-list>li{margin-bottom:20px}.vr-content .vr-sources-list>li::marker{color:var(--vr-link);font-family:Arial,sans-serif;font-weight:700}.vr-footer{max-width:var(--vr-content-width);margin:64px auto 0;padding-top:24px;border-top:1px solid var(--vr-border);text-align:center;font-family:Arial,sans-serif}.vr-footer a{color:var(--vr-link);text-decoration:none}.vr-archive-header{margin-bottom:72px}.vr-archive{width:100%;max-width:1000px;margin:0 auto}.vr-research-list{display:flex;flex-direction:column;gap:48px}.vr-research-card{display:grid;grid-template-columns:minmax(240px,320px) minmax(0,1fr);gap:36px;padding-bottom:48px;border-bottom:1px solid var(--vr-border)}.vr-card-image{display:block}.vr-card-image img{display:block;width:100%;height:auto;aspect-ratio:16 / 10;object-fit:cover}.vr-card-content{display:flex;flex-direction:column;align-items:flex-start;justify-content:center}.vr-card-title{margin:0 0 16px;padding:0;border:0;font-size:32px;line-height:1.25}.vr-card-title a{color:var(--vr-text);text-decoration:none}.vr-card-title a:hover{color:var(--vr-link)}.vr-card-excerpt{margin-bottom:22px;color:var(--vr-muted);font-size:17px;line-height:1.65}.vr-card-excerpt p{margin:0}.vr-read-more{color:var(--vr-link);font-family:Arial,sans-serif;font-size:14px;font-weight:700;text-decoration:none}.vr-pagination{margin-top:64px}.vr-pagination .nav-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.vr-pagination .page-numbers{display:inline-flex;min-width:42px;min-height:42px;padding:8px 12px;align-items:center;justify-content:center;border:1px solid var(--vr-border);color:var(--vr-link);font-family:Arial,sans-serif;text-decoration:none}.vr-pagination .current{background:var(--vr-text);color:var(--vr-paper);border-color:var(--vr-text)}.vr-empty{padding:80px 20px;text-align:center}@media (max-width:1000px){.vr-layout{display:block;max-width:var(--vr-content-width)}.vr-sidebar{position:static;max-height:none;overflow:visible;margin-bottom:32px}.vr-toc-container{padding:22px 24px;border:1px solid var(--vr-border);background:var(--vr-paper)}.vr-toc-title{margin-bottom:14px}.vr-toc ul{columns:2;column-gap:32px}.vr-toc li{break-inside:avoid}}@media (max-width:700px){.vr-page{padding:32px 16px 60px}.vr-header{margin-bottom:40px}.vr-title{font-size:38px}.vr-content{padding:28px 20px}.vr-content h2{font-size:28px}.vr-content h3{font-size:23px}.vr-toc ul{columns:1}.vr-research-card{grid-template-columns:1fr;gap:22px}.vr-card-title{font-size:26px}.vr-note{padding:20px 20px 18px}.vr-timeline{padding:24px 20px 12px}}