/**
 * Generates CSS with automatic fallbacks for modern features
 */
export declare function withFallbacks(css: Record<string, string>): Record<string, string>;
/**
 * Generates @supports rules for progressive enhancement
 */
export declare function generateSupportsRules(feature: string, css: Record<string, string>): string;
/**
 * Applies specific fallbacks for different browsers
 */
export declare function applyBrowserSpecificFallbacks(css: Record<string, string>): Record<string, string>;
/**
 * Utility to create resilient CSS with multiple fallback layers
 */
export declare function createResilientCSS(config: {
    base: Record<string, string>;
    enhanced?: Record<string, string>;
    experimental?: Record<string, string>;
}): string;
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