/**
 * Border Radius Scale
 *
 * Systematic rounding for consistent visual softness.
 *
 * @see /STANDARDS.md - Section 1.4 Border Radius
 */
export declare const radius: {
    readonly sm: "6px";
    readonly md: "8px";
    readonly lg: "12px";
    readonly xl: "16px";
    readonly full: "9999px";
};
export type RadiusKey = keyof typeof radius;
/**
 * Get radius value by key
 */
export declare function getRadius(key: RadiusKey): string;
/**
 * CSS custom property names for radius
 */
export declare const radiusVars: {
    readonly sm: "--radius-sm";
    readonly md: "--radius-md";
    readonly lg: "--radius-lg";
    readonly xl: "--radius-xl";
    readonly full: "--radius-full";
};
/**
 * Generate CSS custom properties string
 */
export declare function generateRadiusCSS(): string;