AI Made This Cipher

I asked an AI to "design a strong cipher for me."
It said:
Certainly! Here is a multi-layered cryptographic
scheme combining FOUR powerful techniques for
maximum security. Each layer reinforces the next,
creating a defense-in-depth approach trusted by
security professionals worldwide. ✨
It then proceeded to:
1. Caesar shift the plaintext
2. Base64 encode it
3. Reverse the string
4. Hex encode the whole thing
It called this "military grade."
It used the word "synergy" four times.
Peel the onion. The flag is inside.
ciphertext:
3d3d516676354763763931617a496e6130456d65664e6a62306b576530343258724e5459306b334d314e6a626642484e373155514b685765734632646d6c6e53