:root{--brand:#1a5fb4;--brand-strong:#174ea6;--brand-soft:#e8f0fe;--bg:#ffffff;--surface:#f6f8fc;--surface-2:#eef1f6;--border:#dde1e6;--text:#1f2329;--text-muted:#5f6571;--hover:#f1f3f4;--selected:#e3edfd;--green:#1e8e3e;--yellow:#f9ab00;--red:#d93025;--shadow-1:0 1px 2px rgba(0,0,0,.06),0 1px 3px rgba(0,0,0,.08);--shadow-2:0 2px 6px rgba(0,0,0,.08),0 4px 12px rgba(0,0,0,.10);--radius:12px;--header-h:64px;--sidebar-w:260px}*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%}body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--bg);overflow:hidden}.drive-root{display:grid;grid-template-columns:var(--sidebar-w) 1fr;grid-template-rows:var(--header-h) 1fr;grid-template-areas:"header header" "sidebar 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