:root{--bg:#f4f6fb;--panel:#fff;--text:#101828;--muted:#667085;--line:#e7eaf0;--primary:#5b5cf0;--success:#0ca678;--dark:#111827;--radius:20px;--shadow:0 18px 60px rgba(16,24,40,.08)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}button,input,textarea,select{font:inherit}.app-shell{min-height:100vh;display:grid;grid-template-columns:250px 1fr}.sidebar{background:var(--dark);color:#fff;padding:24px 18px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:12px;margin:0 8px 34px}.brand-mark{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#7c3aed,#22c55e);font-weight:800}.brand div{display:flex;flex-direction:column}.brand small{color:#9ca3af}.sidebar 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