:root{--primary: #1F4E79;--primary-dark: #14365B;--accent: #2E75B6;--light: #D9E2F3;--bg: #F4F6FA;--surface: #FFFFFF;--text: #1F2937;--muted: #6B7280;--border: #E5E7EB;--success: #16A34A;--warning: #F59E0B;--danger: #DC2626;--info: #0EA5E9;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04)}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Roboto,system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14px}a{color:inherit}.app{display:grid;grid-template-columns:260px 1fr;min-height:100vh}.sidebar{background:var(--primary);color:#fff;padding:0;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto}.brand{padding:18px 20px;display:flex;align-items:center;gap:10px;border-bottom:1px solid rgba(255,255,255,.12)}.brand .logo{width:36px;height:36px;border-radius:8px;background:#fff;color:var(--primary);display:grid;place-items:center;font-weight:800;font-size:16px}.brand 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