According to Seat Guru, the only 77W with some front rows which are "Seat Plus" ( https://www.airfrance.ch/CH/en/commo...siege_plus.htm ) and have extra legroom is https://www.seatguru.com/airlines/Ai...r_Class_V3.php - but for what I can see CDG-SFO (at least on some dates next week) is configured with https://www.seatguru.com/airlines/Ai...r_Class_V2.php . The first seat rows (28-31) are indeed premium (normally paid) but they are just "Seats in front of the cabin" ( https://www.airfrance.ch/CH/en/commo...ant-cabine.htm ).

Otherwise, there are seats close to the emergency exits that naturally have some more legroom ;-)