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p{font-size:15px}.kb-landing-link{grid-template-columns:22px 1fr 14px}.kb-landing-link-label{display:none}}.kb-landing-modal-overlay{position:fixed;inset:0;background:#080a0ec7;backdrop-filter:blur(4px);z-index:2000;display:flex;align-items:center;justify-content:center;padding:24px;animation:kb-landing-fade .15s ease-out}@keyframes kb-landing-fade{0%{opacity:0}to{opacity:1}}.kb-landing-modal{background:var(--app-surface);color:var(--app-text);border-radius:16px;border:1px solid var(--app-border);box-shadow:0 24px 60px #0006;width:min(960px,100%);max-height:calc(100vh - 48px);display:flex;flex-direction:column;overflow:hidden}.kb-landing-modal-video,.kb-landing-modal-pdf{max-width:min(1080px,100%)}.kb-landing-modal-head{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--app-border)}.kb-landing-modal-title{font-weight:700;font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}.kb-landing-modal-close{background:transparent;border:none;color:var(--app-text-muted);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;padding:6px;border-radius:8px;transition:background .12s,color .12s}.kb-landing-modal-close:hover{background:var(--app-surface-2);color:var(--app-text)}.kb-landing-modal-body{flex:1;display:flex;background:#000;min-height:0}.kb-landing-modal-body iframe,.kb-landing-modal-body video{width:100%;height:min(70vh,600px);display:block;border:0}.kb-landing-modal-pdf .kb-landing-modal-body iframe{background:#fff;height:min(80vh,800px)}.kb-landing-modal-empty{padding:60px 20px;text-align:center;color:var(--app-text-muted);background:var(--app-surface-2);width:100%}.kb-landing-modal-foot{display:flex;justify-content:flex-end;gap:14px;padding:10px 18px;border-top:1px solid var(--app-border)}.kb-landing-modal-action{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--app-accent-ink, var(--app-accent));text-decoration:none}[data-theme=dark] .kb-landing-modal-action{color:var(--app-accent)}.kb-landing-modal-action:hover{text-decoration:underline}.kb-browse-layout{display:grid;grid-template-columns:240px 1fr;gap:32px}.kb-browse-side{position:sticky;top:88px;align-self:start}.kb-browse-side h4{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--app-text-muted);margin:0 0 10px;font-weight:700}.kb-browse-tree{display:flex;flex-direction:column;gap:2px}.kb-browse-tree-item{display:flex;align-items:center;gap:8px;padding:6px 10px;border-radius:6px;font-size:13px;color:var(--app-text);cursor:pointer;transition:background 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