手绘风黑白灰配色核桃椰子自然摆放插画

minimalist black and white illustration, monochromatic color scheme, nine types of nuts arranged in a 3x3 grid, pistachio, cashew, walnut in the first row, coconut, almond, walnut in the second row, hazelnut, pecan, cacao bean in the third row, each nut showing both shell and kernel, clean and detailed line art, white background, no decorative elements, clear and informative visual