*{box-sizing:border-box;margin:0;padding:0}:root{--primary: #1e40af;--primary-light: #3b82f6;--secondary: #64748b;--success: #22c55e;--danger: #ef4444;--warning: #f59e0b;--bg: #f8fafc;--card: #ffffff;--border: #e2e8f0;--text: #0f172a;--text-muted: #64748b;--radius: 12px;--shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);--shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;font-size:15px;line-height:1.5}.app{display:flex;flex-direction:column;min-height:100vh}.nav{background:var(--primary);color:#fff;padding:0;position:sticky;top:0;z-index:100;box-shadow:var(--shadow-md)}.nav-inner{display:flex;align-items:center;padding:0 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