How to focus on an area / button without looking too "forceful"?

Summary: How to place a website visitor's focus on areas that'll help them see value on the rest of the page faster? It shouldn't feel intrusive, since repeating visitors might not need to see it again.

Details: I want users landing on my page (https://divshow.bytebeacon.com) to click the "Play demo" button to get the idea of what the product does.

I want the button to pop a little, but not so much that it doesn't feel part of the page anymore. I've gotten some feedback on this already and the current state (as of Oct 01 2019) is where I've gotten, but wanted to hear from more people on other approaches taken to solve this issue.