:root{
  --vbr-bg:#f5f1ea;
  --vbr-card:#ffffff;
  --vbr-soft:#efe8de;
  --vbr-text:#181512;
  --vbr-muted:#6d6258;
  --vbr-line:#1a1714;
  --vbr-accent:#0f0f0f;
  --vbr-border:2px solid var(--vbr-line);
  --vbr-radius:18px;
  --vbr-shadow:0 14px 36px rgba(24,21,18,.08);
}
html[data-theme="dark"], .dark{
  --vbr-bg:#111111;
  --vbr-card:#171717;
  --vbr-soft:#1f1f1f;
  --vbr-text:#f5f1ea;
  --vbr-muted:#b9aea2;
  --vbr-line:#f1e7da;
  --vbr-accent:#f7f3ec;
  --vbr-shadow:none;
}
body{background:var(--vbr-bg);color:var(--vbr-text)}
.vbr-page{padding-bottom:64px}
.shell{width:min(1180px,calc(100% - 32px));margin:0 auto}
.vbr-kicker{margin:0 0 10px;font-size:12px;letter-spacing:.18em;font-weight:800;color:var(--vbr-muted)}
.vbr-hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(340px,.95fr);gap:28px;align-items:center;padding:34px 0 22px}
.vbr-hero-copy h1{margin:0 0 14px;font-size:clamp(34px,5vw,60px);line-height:.98;letter-spacing:-.04em}
.vbr-hero-copy h1 span{display:block;color:var(--vbr-muted)}
.vbr-lede{margin:0 0 18px;max-width:62ch;font-size:16px;line-height:1.7;color:var(--vbr-muted)}
.vbr-hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:18px}
.vbr-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border-radius:999px;border:var(--vbr-border);font-weight:800;text-decoration:none;color:var(--vbr-text);background:transparent}
.vbr-btn-primary{background:var(--vbr-accent);color:var(--vbr-bg)}
html[data-theme="dark"] .vbr-btn-primary,.dark .vbr-btn-primary{color:#111}
.vbr-hero-points{margin:0;padding:0;list-style:none;display:grid;gap:8px;color:var(--vbr-muted);font-size:14px}
.vbr-hero-media{display:grid;gap:12px}
.vbr-hero-stage{position:relative;border:var(--vbr-border);border-radius:26px;overflow:hidden;background:#000;box-shadow:var(--vbr-shadow);aspect-ratio:4/3}
.vbr-hero-video{width:100%;height:100%;object-fit:cover;display:block}
.vbr-hero-badges{position:absolute;left:16px;right:16px;bottom:16px;display:flex;justify-content:space-between;gap:8px}
.vbr-hero-badges span{background:rgba(0,0,0,.62);border:1px solid rgba(255,255,255,.22);color:#fff;border-radius:999px;padding:6px 10px;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.vbr-demo-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.vbr-demo-tabs button{min-height:40px;border:var(--vbr-border);border-radius:999px;background:var(--vbr-card);font:inherit;font-weight:700;color:var(--vbr-text);cursor:pointer}
.vbr-demo-tabs button.is-active{background:var(--vbr-accent);color:var(--vbr-bg)}
html[data-theme="dark"] .vbr-demo-tabs button.is-active,.dark .vbr-demo-tabs button.is-active{color:#111}
.vbr-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;padding:6px 0 24px}
.vbr-summary article,.vbr-panel,.vbr-use-grid article,.vbr-faq-list details{background:var(--vbr-card);border:var(--vbr-border);border-radius:22px;box-shadow:var(--vbr-shadow)}
.vbr-summary article{padding:18px}
.vbr-summary strong{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:999px;background:var(--vbr-soft);margin-bottom:10px}
.vbr-summary h3{margin:0 0 6px;font-size:17px}
.vbr-summary p{margin:0;color:var(--vbr-muted);line-height:1.65}
.vbr-studio{padding:6px 0 30px}
.vbr-studio-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:18px}
.vbr-studio-head h2,.vbr-section-head h2{margin:0;font-size:clamp(26px,3vw,38px);line-height:1.05}
.vbr-studio-note{margin:0;max-width:52ch;color:var(--vbr-muted);line-height:1.65}
.vbr-workbench{display:grid;grid-template-columns:minmax(320px,.95fr) minmax(0,1.05fr);gap:18px;align-items:start}
.vbr-left,.vbr-right{display:grid;gap:18px}
.vbr-panel{padding:18px}
.vbr-panel-head{display:flex;gap:12px;align-items:start;margin-bottom:14px}
.vbr-panel-head span{display:inline-flex;width:36px;height:36px;align-items:center;justify-content:center;border-radius:10px;background:var(--vbr-soft);font-weight:800}
.vbr-panel-head h3{margin:0 0 4px;font-size:18px}
.vbr-panel-head p{margin:0;color:var(--vbr-muted);font-size:14px;line-height:1.55}
.vbr-dropzone{display:flex;align-items:center;justify-content:center;min-height:280px;border:2px dashed var(--vbr-line);border-radius:18px;background:linear-gradient(180deg,var(--vbr-soft),transparent);padding:14px;cursor:pointer;position:relative;overflow:hidden}
.vbr-small-drop{min-height:120px}
.vbr-empty{display:grid;gap:4px;text-align:center;color:var(--vbr-muted)}
.vbr-empty b{font-size:16px;color:var(--vbr-text)}
.vbr-preview{width:100%;max-height:320px;border-radius:14px;background:#000;display:block}
.vbr-bg-meta{font-size:14px;font-weight:700;color:var(--vbr-text)}
.vbr-sample{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;margin-bottom:12px;min-height:44px;padding:0 14px;border:var(--vbr-border);border-radius:14px;background:var(--vbr-soft);color:var(--vbr-text);font:inherit;cursor:pointer}
.vbr-sample b{font-size:14px}
.vbr-sample span{font-size:13px;color:var(--vbr-muted)}
.vbr-field{display:grid;gap:7px}
.vbr-field>span{font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--vbr-muted)}
.vbr-field textarea,.vbr-field select{width:100%;border:var(--vbr-border);border-radius:14px;background:var(--vbr-card);color:var(--vbr-text);font:inherit}
.vbr-field textarea{padding:12px 14px;min-height:140px;resize:vertical;line-height:1.65}
.vbr-controls{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:14px}
.vbr-field select{height:40px;min-height:40px;padding:0 10px;font-size:13px}
.vbr-generate{margin-top:14px;width:100%;min-height:48px;border:none;border-radius:999px;background:var(--vbr-accent);color:var(--vbr-bg);font:inherit;font-weight:800;cursor:pointer}
html[data-theme="dark"] .vbr-generate,.dark .vbr-generate{color:#111}
.vbr-credits{margin-top:10px;display:grid;gap:4px;font-size:14px}
.vbr-credits strong{font-size:14px}
.vbr-credits span{color:var(--vbr-muted)}
.vbr-result-panel{margin-top:18px;background:var(--vbr-card);border:var(--vbr-border);border-radius:22px;padding:18px;box-shadow:var(--vbr-shadow)}
.vbr-result-head h3{margin:0}
.vbr-result-shell{position:relative;margin-top:12px;min-height:260px;max-height:450px;border-radius:18px;overflow:hidden;border:var(--vbr-border);background:#000;display:grid;place-items:center}
.vbr-result-video{width:100%;max-height:450px;height:auto;display:block;background:#000}
.vbr-overlay{position:absolute;inset:0;background:rgba(0,0,0,.72);display:grid;place-items:center;text-align:center;gap:10px;color:#fff;z-index:3}
.vbr-spinner{width:42px;height:42px;border-radius:50%;border:4px solid rgba(255,255,255,.22);border-top-color:#fff;animation:vbr-spin 1s linear infinite}
@keyframes vbr-spin{to{transform:rotate(360deg)}}
.vbr-download{position:absolute;right:14px;bottom:14px;width:42px;height:42px;border:none;border-radius:999px;background:rgba(0,0,0,.75);color:#fff;font-size:24px;line-height:1;cursor:pointer;z-index:2}
.vbr-usecases,.vbr-faq{padding:12px 0 24px}
.vbr-section-head{margin-bottom:16px}
.vbr-use-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.vbr-use-grid article{padding:18px}
.vbr-use-grid h3{margin:0 0 7px;font-size:17px}.vbr-use-grid p{margin:0;color:var(--vbr-muted);line-height:1.65}
.vbr-faq-list{display:grid;gap:12px}
.vbr-faq-list details{padding:0 18px}
.vbr-faq-list summary{list-style:none;cursor:pointer;padding:18px 0;font-weight:800}
.vbr-faq-list p{margin:0 0 18px;color:var(--vbr-muted);line-height:1.7}
.vbr-footer{padding:22px 0 40px;color:var(--vbr-muted);font-size:14px}
@media (max-width:980px){
  .vbr-hero,.vbr-workbench,.vbr-summary,.vbr-use-grid{grid-template-columns:1fr}
  .vbr-demo-tabs,.vbr-controls{grid-template-columns:repeat(2,minmax(0,1fr))}
  .vbr-studio-head{display:grid;gap:10px}
}
@media (max-width:640px){
  .shell{width:min(100% - 22px,1180px)}
  .vbr-hero{padding-top:22px;gap:18px}
  .vbr-panel,.vbr-result-panel,.vbr-summary article,.vbr-use-grid article,.vbr-faq-list details{border-radius:18px;padding:16px}
  .vbr-dropzone{min-height:220px}
  .vbr-small-drop{min-height:108px}
  .vbr-hero-badges{left:10px;right:10px;bottom:10px}
}

/* v20260807b: compare hero, model control, examples */
.vbr-compare-card{border:var(--vbr-border);border-radius:26px;overflow:hidden;background:var(--vbr-card);box-shadow:var(--vbr-shadow)}
.vbr-compare-top{height:46px;padding:0 14px;display:flex;align-items:center;justify-content:space-between;border-bottom:var(--vbr-border);font-size:13px;font-weight:800}
.vbr-compare-top small{color:var(--vbr-muted);font-weight:600}
.vbr-compare-stage{position:relative;aspect-ratio:4/3;overflow:hidden;background:#050505}
.vbr-before-media,.vbr-after-media{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.vbr-before-media{filter:saturate(.8) contrast(.95)}
.vbr-after-clip{position:absolute;inset:0;overflow:hidden;clip-path:inset(0 44% 0 0)}
.vbr-after-media{min-width:100%;min-height:100%}
.vbr-compare-line{position:absolute;top:0;bottom:0;left:56%;width:2px;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.25);pointer-events:none;z-index:5}
.vbr-compare-line i{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:#fff;color:#111;font-style:normal;font-size:15px;box-shadow:0 6px 20px rgba(0,0,0,.2)}
.vbr-compare-range{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;z-index:6;margin:0}
.vbr-compare-label{position:absolute;top:12px;z-index:4;padding:6px 9px;border-radius:999px;background:rgba(0,0,0,.62);color:#fff;font-size:10px;font-weight:900;letter-spacing:.12em}
.vbr-label-before{left:12px}.vbr-label-after{right:12px}
.vbr-cases{padding:12px 0 30px}
.vbr-section-head-row{display:flex;align-items:end;justify-content:space-between;gap:24px}
.vbr-section-head-row>p{margin:0;max-width:46ch;color:var(--vbr-muted);line-height:1.65}
.vbr-case-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.vbr-case{overflow:hidden;background:var(--vbr-card);border:var(--vbr-border);border-radius:22px;box-shadow:var(--vbr-shadow)}
.vbr-case-media{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--vbr-soft)}
.vbr-case-placeholder{position:absolute;inset:0;display:grid;place-items:center;font-size:18px;font-weight:900;letter-spacing:.14em;color:var(--vbr-muted);background:linear-gradient(145deg,var(--vbr-soft),var(--vbr-card))}
.vbr-case-media video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .2s ease;background:#000}
.vbr-case.is-playing .vbr-case-media video{opacity:1}
.vbr-case-media>span{position:absolute;right:10px;bottom:10px;z-index:2;padding:5px 8px;border-radius:999px;background:rgba(0,0,0,.68);color:#fff;font-size:10px;font-weight:800;letter-spacing:.05em}
.vbr-case-copy{padding:15px}.vbr-case-copy h3{margin:0 0 6px;font-size:17px}.vbr-case-copy p{margin:0;color:var(--vbr-muted);font-size:14px;line-height:1.6}
@media(max-width:980px){.vbr-case-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.vbr-section-head-row{display:grid;gap:8px}}
@media(max-width:560px){.vbr-case-grid{gap:10px}.vbr-case{border-radius:16px}.vbr-case-copy{padding:12px}.vbr-case-copy p{font-size:13px}.vbr-compare-top{height:42px}}

/* v20260807c: simplified hero video + hover-only examples */
.vbr-hero-stage-simple{position:relative;aspect-ratio:4/3;border:var(--vbr-border);border-radius:26px;overflow:hidden;background:#000;box-shadow:var(--vbr-shadow)}
.vbr-hero-stage-simple .vbr-hero-video{width:100%;height:100%;object-fit:cover;display:block;background:#000}
.vbr-hero-corner{position:absolute;left:14px;right:14px;bottom:14px;display:flex;align-items:center;justify-content:space-between;gap:10px;pointer-events:none}
.vbr-hero-corner span,.vbr-hero-corner b{padding:6px 9px;border:1px solid rgba(255,255,255,.24);border-radius:999px;background:rgba(0,0,0,.62);color:#fff;font-size:10px;line-height:1;font-weight:800;letter-spacing:.06em;text-transform:uppercase;backdrop-filter:blur(6px)}
.vbr-demo-tabs,.vbr-compare-card{display:none!important}
.vbr-case-media video{opacity:0}
.vbr-case.is-playing .vbr-case-media video{opacity:1}
@media(max-width:640px){.vbr-hero-stage-simple{border-radius:18px}.vbr-hero-corner{left:10px;right:10px;bottom:10px}.vbr-hero-corner span,.vbr-hero-corner b{font-size:9px;padding:5px 7px}}