:root{--primary-color: #f38020;--success-color: #10b981;--danger-color: #ef4444;--warning-color: #f59e0b;--background: #1a1a1a;--surface: #2a2a2a;--surface-hover: #333333;--text-primary: #ffffff;--text-secondary: #a3a3a3;--border-color: #404040;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background-color:var(--background);color:var(--text-primary);line-height:1.6}.app{min-height:100vh;display:flex;flex-direction:column}.header{background-color:var(--surface);border-bottom:1px solid var(--border-color);padding:1.5rem 0}.header-content{max-width:1200px;margin:0 auto;padding:0 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