Is it safe to embed the widget on my site?

Yes. The widget runs in a sandboxed iframe only for cross-origin session operations, and its visible UI is rendered in your page using DOM APIs that avoid HTML injection. All widget classes are prefixed so it does not interfere with your CSS, and all widget requests go through a same-origin bridge for authentication. The widget never reads your cookies, never touches your local storage, and never injects scripts into your page. It is pure vanilla JavaScript and pure vanilla CSS with zero runtime dependencies, so it does not pull in jQuery, Bootstrap, or Font Awesome, and it does not conflict with sites that use them.