:root{--bg:#f5f6f8;--surface:#fff;--border:#e6e8ec;--text:#12151c;--text-muted:#6b7280;--accent:#0e7c66;--accent-soft:#e4f4ef;--danger:#c0362c;--danger-soft:#fbeae8;--warn:#b7791f;--warn-soft:#fdf3e1;--info:#2563eb;--info-soft:#e7effe;--radius:12px;--shadow:0 1px 2px rgba(16,24,40,.04),0 1px 3px rgba(16,24,40,.06);--sidebar-w:232px}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer}.app-shell{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);padding:20px 14px;display:flex;flex-direction:column;position:-webkit-sticky;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:10px;padding:4px 8px 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