Adding Jetpack Subscription To Popup

I use Jetpack on my site for subscriptions. I’m also using a popup via Supsystic to route people to my “Subscribe” page. However, I’d like to make it easier for people to subscribe, by just including the “Enter Your Email” bar on the popup itself. (I don’t want to use Supsystic’s subscription method; I specifically want to use Jetpack’s.) Is there a way—either via CSS or something else—that I can insert the Jetpack subscription form into the popup?

Here’s my website: http://www.trialofthecentury.net (Popup should show within fifteen seconds)
Here’s my subscribe page: http://www.trialofthecentury.net/subscribe-to-trial-of-the-century (The “Email Address” and “Subscribe” button are what I want to add to the popup.)

Thank you!