:root{--primary: #0d9488;--primary-dark: #0b7c70;--primary-light: #eef9f7;--bg: #f6f7f9;--surface: #ffffff;--surface-2: #fafbfc;--border: #e8eaed;--border-strong: #dadde1;--text: #14161a;--text-2: #333941;--muted: #5f6670;--danger: #dc4d4d;--warn: #c9820a;--debit: #2563eb;--credit: #d4493f;--radius: 10px;--radius-sm: 8px;--shadow-sm: 0 1px 2px rgba(16, 24, 40, .05);--shadow: 0 6px 22px rgba(16, 24, 40, .07)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:Inter,Segoe UI,Roboto,system-ui,-apple-system,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:13.5px;line-height:1.45;-webkit-font-smoothing:antialiased}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:none}::selection{background:var(--primary-light)}.app{display:flex;height:100vh;overflow:hidden}.sidebar{width:250px;background:#15171c;border-right:1px solid #23262d;display:flex;flex-direction:column;flex-shrink:0;overflow:hidden}.brand{display:flex;align-items:center;gap:11px;padding:16px 18px;border-bottom:1px solid #23262d;flex-shrink:0}.brand-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--primary),#14b8a6);color:#fff;font-weight:800;font-size:13px;letter-spacing:.5px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.brand-text{font-weight:750;font-size:16px;color:#f3f5f7;letter-spacing:-.2px;display:flex;flex-direction:column;line-height:1.2}.brand-text small{font-weight:500;font-size:10.5px;color:#868d98;letter-spacing:0}.nav{flex:1;overflow-y:auto;padding:8px 0 16px}.nav::-webkit-scrollbar{width:8px}.nav::-webkit-scrollbar-thumb{background:#2c3038;border-radius:8px}.nav-section{margin-bottom:4px}.nav-group{padding:13px 20px 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