/**
 * Pure markup for <kora-background> — the layered page backdrop distilled from hal.handle.me:
 * a dark base, an optional grid texture, a top-down gradient veil, and soft blurred accent blobs.
 *
 * The site-specific 3D/canvas content (e.g. HAL's GLB model) is NOT part of this — render that in
 * your own fixed layer in front. The grid IMAGE is app-provided via the `--kora-bg-grid-image`
 * custom property, so this package ships no binary assets.
 */
export interface KoraBackgroundState {
    grid: boolean;
}
export interface KoraBackgroundProps {
    /** Show the grid texture layer (requires --kora-bg-grid-image to be set). Default false. */
    grid?: boolean;
}
export declare function backgroundInnerHTML(_state: KoraBackgroundState): string;
export declare function renderKoraBackground(props?: KoraBackgroundProps): string;
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