Brutalist Sci-Fi Outpost pixel art style

Stark dystopian industrial look. Blocky, angular geometric shapes with rigid utilitarian proportions. Limited monochrome palette of muted greenish-grey light tones, medium neutral grey midtones, and deep purplish-grey shadows. Directional top-right lighting cast in sharp, hard-edged shadow blocks across surfaces with two value steps. Plain concrete, matte metal, and weathered stone defined purely by flat colour masses. Cold, austere sci-fi atmosphere.