/**
 * Shared responsive breakpoint constants for blocks/theme runtime.
 *
 * NOTE: Keep these values aligned with rb-utilities responsive variants.
 */
export declare const BREAKPOINT_SM = 640;
export declare const BREAKPOINT_MD = 768;
export declare const BREAKPOINT_LG = 1024;
export declare const BREAKPOINT_XL = 1280;
export declare const BREAKPOINT_SM_DOWN: number;
export declare const BREAKPOINT_MD_DOWN: number;
export declare const BREAKPOINT_LG_DOWN: number;
export declare function mqUp(px: number): string;
export declare function mqDown(px: number): string;
export declare function mqBetween(minPx: number, maxPx: number): string;
export declare const MQ_SM_UP: string;
export declare const MQ_MD_UP: string;
export declare const MQ_LG_UP: string;
export declare const MQ_XL_UP: string;
export declare const MQ_SM_DOWN: string;
export declare const MQ_MD_DOWN: string;
export declare const MQ_LG_DOWN: string;
export declare const MQ_TABLET_ONLY: string;
export declare const MQ_MAX_640: string;
export declare const MQ_MAX_768: string;
/**
 * Build-time media token mapping used by CSS source token replacement.
 */
export declare const BREAKPOINT_QUERY_TOKENS: Readonly<Record<string, string>>;
