地球一小时背景简约风浅蓝色窗户窗外开满白花的树窗台

minimalist illustration, light blue and white color scheme, serene and fresh atmosphere, open window, tree with white blossoms outside, two green plants under the tree, books on the windowsill, tranquil and natural feel, spring symbolism, calm study ambiance, Background, High Definition Detail, Bright, High Quality