:root{--bg: #0b0c0f;--panel: #111318;--muted: #9aa0a6;--text: #e8eaed;--border: #2a2f36;--accent: #6aa0ff;--chip: #1a1f27}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--text);font:14px/1.45 system-ui,-apple-system,Segoe UI,Roboto,Inter,sans-serif}button{cursor:pointer}.app-shell{display:grid;grid-template-rows:56px 1fr;height:100%}.topbar{display:flex;align-items:center;gap:12px;padding:8px 12px;border-bottom:1px solid var(--border);background:var(--panel)}.topbar-left{display:flex;align-items:center;gap:8px}.topbar-right{display:flex;align-items:center}.brand-section{display:flex;align-items:center;gap:8px}.brand-name,.app-title{color:var(--text);font-weight:600;font-size:14px}.brand-switch-btn{background:transparent;border:0;font-size:14px;cursor:pointer;padding:4px;border-radius:4px;opacity:.7;transition:opacity .2s ease}.brand-switch-btn:hover{opacity:1}.mode-switch{display:inline-flex;background:#0f1217;border:1px solid var(--border);border-radius:8px;overflow:hidden}.mode-switch button{padding:6px 10px;color:var(--muted);background:transparent;border:0}.mode-switch button.active{background:var(--chip);color:var(--text)}.searchbar{display:flex;gap:8px;align-items:center;flex:1}.searchbar input{flex:1;padding:10px 12px;background:#0f1217;border:1px solid var(--border);color:var(--text);border-radius:8px}.searchbar-flex{display:flex;gap:8px;align-items:center;flex:1;margin:0 16px}.searchbar-flex input{width:100%;padding:8px 12px;background:#0f1217;border:1px solid var(--border);color:var(--text);border-radius:6px;font-size:14px}.build-btn{padding:6px 12px;background:var(--chip);border:1px solid var(--border);color:var(--text);border-radius:8px;cursor:pointer;font-size:14px;transition:all .2s ease}.build-btn:hover{background:#1f2329;border-color:var(--accent)}.layout{display:grid;grid-template-columns:1fr 1fr;gap:0;height:calc(100vh - 56px)}.left,.right{overflow:auto}.left{border-right:1px solid 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