/**
 * Inject the SignalWire design-token stylesheet into the document so all
 * components — including those in shadow roots — can resolve `--bg-page`,
 * `--fg-default`, `--interactive-button-primary-bg`, etc.
 *
 * Idempotent. Calling twice is a no-op.
 */
export declare function ensureSignalWireTheme(): void;
/** Load the three SignalWire brand font families via Google Fonts. */
export declare function ensureSignalWireFonts(): void;
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