:root{--bg: #f4f6fb;--surface: #ffffff;--sidebar: #0f1f3d;--sidebar-active: #1d3a6e;--border: #e2e8f0;--text: #1a2235;--muted: #64748b;--primary: #2563eb;--primary-dark: #1d4ed8;--green: #16a34a;--green-bg: #dcfce7;--red: #dc2626;--red-bg: #fee2e2;--amber: #d97706;--amber-bg: #fef3c7;--blue-bg: #dbeafe;--gray-bg: #eef2f7;--radius: 10px;--shadow: 0 1px 3px rgba(15, 31, 61, .08), 0 1px 2px rgba(15, 31, 61, .04)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px}a{color:var(--primary);text-decoration:none}h1,h2,h3{margin:0 0 4px}.app{display:flex;min-height:100vh}.sidebar{width:248px;background:var(--sidebar);color:#cbd5e1;display:flex;flex-direction:column;flex-shrink:0;position:sticky;top:0;height:100vh}.brand{padding:20px 20px 14px;color:#fff}.brand .logo{font-size:18px;font-weight:700;letter-spacing:.3px}.brand 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