就算 (jiù suàn) is a concessive conjunction meaning even if or even though. It introduces a hypothetical or extreme condition that does not change the outcome. The structure is 就算...也... (even if..., still...). It is very similar to 即使 (jí shǐ) and 哪怕 (nǎ pà), all of which express concession. 就算 is slightly more colloquial and appears frequently in spoken Mandarin to express determination or stubbornness despite obstacles.