:root{--bg:#f5f7fb;--card:#fff;--line:#e6eaf0;--text:#162033;--muted:#7b8799;--nav:#101b33;--nav2:#1d2a48;--primary:#1d4ed8;--green:#067647;--red:#b42318;--amber:#b54708;--purple:#6941c6;--shadow:0 10px 30px rgba(23,32,51,.06)}*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg)}a{color:inherit}button,input,select,textarea{font:inherit}.app-shell{display:grid;grid-template-columns:250px 1fr;min-height:100vh}.sidebar{background:linear-gradient(180deg,var(--nav),#0c1529);color:#fff;padding:24px 18px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;z-index:20}.brand{display:flex;align-items:center;gap:12px;padding:0 8px 24px}.brand strong{display:block;font-size:18px}.brand 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