Colors: Main background is pure black, graphic elements are ...

Colors: Main background is pure black, graphic elements are pure white, no gradients, no mixed colors, monochromatic contrast. Composition: Symmetrical aesthetics. Subject: Buildings, castles, architectural silhouettes within square frames, serving as strongholds or shop functions. Effects: No light and shadow, no gradients, no outlines / shadows / glows or similar effects; purely flat vector symbol design. Lines are predominantly geometric (straight lines, polylines, arcs), and shapes are extremely minimalist, symbolic, and abstract. Some icons feature geometric splicing and cut-out designs. Core Visual Style: Extremely simple monochromatic vector icons, geometric symbolization, flat and planar. Details are simplified, core structural outlines are retained, redundant decorations are removed. Proportions are exaggerated, perspective is accurate, and visual symbolism is enhanced. A sci-fi style fused with mecha/mycelial organisms, featuring hard and aggressive lines.