:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol;line-height:1.6;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--background-color: #f4f7f9;--surface-color: #ffffff;--primary-color: #007bff;--primary-hover-color: #0056b3;--text-color: #333333;--text-muted-color: #666666;--border-color: #dee2e6;--input-focus-border-color: #80bdff;--input-focus-box-shadow: rgba(0, 123, 255, .25);--error-color: #d9534f;--error-background-color: #f8d7da;--error-border-color: #f5c6cb;--success-color: #28a745;--success-background-color: #d4edda;--success-border-color: #c3e6cb;--shadow-color: rgba(0, 0, 0, .05);--shadow-strong-color: rgba(0, 0, 0, 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