export type ThemeTokens = {
    logo?: string;
    fontFamily?: string;
    primaryColor?: string;
    secondaryColor?: string;
};
/**
 * spec §9.2 — tokens become custom properties on the mount element plus a
 * stylesheet that lives *under* that element, so the journey owns its
 * lifecycle and leaves nothing in the host page. `!important` matches the
 * hosted templates for now; §14.4 replaces this with module-native theming.
 */
export declare const applyTheme: (deps: {
    container: HTMLElement;
    tokens: ThemeTokens;
}) => (() => void);
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