/**
 * HTML Report CSS Styles
 *
 * All CSS variables, resets, component styles, and theme definitions
 * used by the Playwright Oracle Reporter HTML output.
 *
 * @module report/html/styles
 */
/**
 * Returns the complete CSS stylesheet for the report.
 *
 * @param gradeColor - CSS colour value for the health-score grade badge
 */
export declare function getHtmlStyles(gradeColor: string): string;
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