“BIENNIAL NORTH · DESIGN EXPO”是使用 FontVibe AI 创作的极简文字效果。深灰色几何无衬线字，字距宽松，下方一道发丝细线，平涂哑光，置于几乎空白的米白底上。

Create a finished vertical 2:3 poster for a design expo. Render exactly one line of type, verbatim: “BIENNIAL NORTH · DESIGN EXPO”. Do not add dates, venue, credits, logos, captions, or any other lettering. Set the headline in bold geometric sans-serif capitals: perfect circular rounds, uniform stroke weight, precise horizontal terminals, high x-height, exact geometric intersections, and optically tight spacing. Render the letters flat matte charcoal with crisp edges and no texture, gloss, shadow, or dimensional effects. Place the single line horizontally centered, around the vertical midpoint, spanning about 80% of the poster width; preserve generous clear white space above and below. Add one short, very fine charcoal hairline centered below the type, separated by open space. Use a clean soft-white background, subtle warm-grey tonal variation only if nearly imperceptible, and even diffuse illumination. Restrained monochrome, sharp print-ready typography, architectural emptiness. No extra imagery or ornament.