C700 pilot reported a hydraulic system failure during initial approach resulted in failure of flight spoilers. Flight crew diverted and landed safely; finding hydraulic fluid leak post-flight.

Narrative

While flying Aircraft X From ZZZ1 airport to ZZZ; we experienced an aircraft systems failure during our initial approach into ZZZ. The flight crew set up for the LOC DME Approach (we were later cleared for and accepted a visual approach) and had fully configured for our descent into the airport. The last 20 minutes of the flight was very turbulent with strong winds being blown across the Mountains during our descent. The Captain; who was the Pilot Flying at the time; was making use of spoilers to help the airplane with its descent. Then within an additional application of the spoilers; we received a CAS (Crew Alert System) message on our avionics. The message stated that the outboard and middle spoilers had experienced a failure. After a brief discussion about whether we should continue the approach or abort it; we ended up flying the missed approach. Then we consulted the QRH and performed the appropriate actions necessary. The checklist stated that we were not to land with strong crosswinds or any tailwind component; which precluded any further attempts to land at ZZZ since there was a tailwind component there at the time. We also had reason to believe that we had lost control of the roll spoilers and that our roll control was only available by means of the ailerons. We finished up the checklist and decided to divert to ZZZ2. There; we set up for the approach again and worked as a team to ensure that the approach would be done safely with the auto throttles turned off as referenced in our checklist procedure. We landed in ZZZ2 with no further incident and reported to ATC that we made it to the ground safely. Once we were on the ground; we deplaned the passengers and contacted our company to coordinate our next moves.I believe what caused this event was a failure of the hydraulic system that was controlling the roll spoilers on the left wing. I believe this because we landed and found the left wing dripping hydraulic fluid in the area of the roll spoilers. Additionally; we saw that the left hydraulic Fluid reservoir had less fluid in it than the right hydraulic system during flight after the CAS message event.This seems to be a random equipment failure that the flight crew would have little control over. We performed a very good preflight inspection before our flight and found no evidence of any hydraulic issues. I believe this was a simple; random event that sometimes happens when you fly aircraft frequently.