WORDPRESS THEME HELP NEEDED - CUSTOM FONT ISSUE - HELP ASAP!

My real estate website is [login to view URL] I have an IDX feed tied in which populates homes for sale and allows users to browse listings on the website. My current theme gives you the option to use @font-face to create custom fonts for the navigtion menu, widget titles, footer, etc. You can see the custom font i am using here: [login to view URL] Although, the IDX feed is not showing the custom font style, size and color... and their support team does not know how to get the custom font to show up on the IDX hosted pages. These pages are on a different server. I want to have the custom font show on ALL pages across domains... even the IDX hosted pages. There is a section on the IDX admin page where you can enter custom CSS... maybe that will do it? PLEASE HELP! Correct design / fonts / font size / font color: [login to view URL] Incorrect design / fonts / font size / font color: [login to view URL] IF YOU CAN'T START IMMEDIATELY, DO NOT BID! MILESTONE WILL BE CREATED AT START AND RELEASED 100% WHEN COMPLETE. THANK YOU!!