na-adjective
Describes something characteristic of a continent, especially in contrast to island nations like Japan. Often used for scale, climate, or mentality.
大陸的な気候は、夏は暑く冬は寒い。
A continental climate is hot in summer and cold in winter.
彼の考え方は大陸
His way of thinking is continental; he doesn't worry about small details.
na-adjective
broad-minded; unfussy; calm
Describes a personality or attitude that is relaxed, not bothered by trivial matters, and takes things in stride. Often carries a positive nuance of being big-hearted.
彼女は大陸的な性格で、いつも落ち着いている。
She has a calm, broad-minded personality and is always composed.
おおらか also means 'broad-minded' or 'generous', but is a native Japanese word without the geographical nuance of 大陸的.
Formed from 大陸 (continent) + 的 (-like, -ish), a common pattern for creating adjectival nouns. The figurative sense of 'broad-minded' likely derives from the perceived spaciousness and unhurried nature of continental life.