1. AA.COM is generally accurate;
2. Even if not accurate, e.g., the fare and terms quoted are not what AA intended, if you purchase through an AA channel (website or phone center), the fare and its conditions as set forth in your e-ticket confirmation bind AA under US law. Put simply, if the fare quote is not what AA intends but it is what AA sells to you and issues, that is what you get.

Be careful of the following: 1) generally speaking, if you co-mingle fare buckets on a ticket, the most restrictive conditions apply to the entire ticket; 2) be careful that "refundable" means refundable to original form of payment rather than as a credit to be used by you for AA travel (you may not care).

A strong recommendation to call AA and walk through this. If the specifics matter to you, let them do the heavy-lifting and point you to where you need to be.