Power steering fluid leak

It wouldn't be the steering gear. That is nowhere near the leak you described. The pump will leak around the shaft seal. You will see that sprayed outward on the backside of the pulley. If the leak is right under the reservoir and the fluid runs out without running the engine, suspect the reservoir is cracked or the o-ring in the connection to the pump is leaking. There are two clips to remove, then you can pull the reservoir off to look underneath it for cracks. If the engine has to be running for the fluid to run out, it's more likely to be the high pressure hose. Look where the rubber hose is crimped onto the metal pipe.