With atmospheric noise. Each shuffle requests random numbers from random.org, which derives them from radio noise in the atmosphere, the same source used for lotteries and scientific draws. If that service is unavailable, the shuffle falls back to the server's cryptographic random number generator, and every reading states which one it has.
A language model, given your cards, their positions and your question. The card meanings shown beneath each plate are traditional Rider–Waite and Thoth attributions, held in our own deck data.
Yes. Every card, including The Fool, has an equal and independent chance of arriving reversed.
A spread is a mirror, not a window, this is for you to decide. Readings are no substitute for professional advice.
It is sent to the interpreting model along with the drawn cards, kept briefly in memory so your reading's page keeps working, and not written to any database.