:root{--primary-color: #2563eb;--primary-dark: #1e40af;--secondary-color: #10b981;--danger-color: #ef4444;--warning-color: #f59e0b;--bg-primary: #ffffff;--bg-secondary: #f9fafb;--bg-tertiary: #f3f4f6;--text-primary: #111827;--text-secondary: #6b7280;--border-color: #e5e7eb;--shadow: 0 1px 3px 0 rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--bg-secondary);color:var(--text-primary);line-height:1.6}.container{max-width:1400px;margin:0 auto;padding:0 20px}.header{background-color:var(--bg-primary);border-bottom:1px solid var(--border-color);padding:16px 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