「牛卫军印」は FontVibe AI で作成した中国墨絵ブラシの文字エフェクトです。中国の墨（すみ）による筆文字書道のスタイルをラテン文字に応用しました。深い黒墨に本物の筆先の質感、太細のはっきりした筆致の変化、そして画仙紙の趣を備えています。中華レストランのブランディング、武術、ウェルネス、文化的なデザインに最適です。

rendered in Chinese ink brush calligraphy style. Letterforms painted with a fully loaded sumi ink brush — deep black ink, visible bristle marks along stroke edges, wet ink pooling at stroke starts, feathered dry-brush trailing ends. Authentic ink density variation: thick rich black cores fading to grey at thin passages. Rice paper texture visible behind. Traditional Chinese calligraphy energy — each stroke confident, intentional, irreversible. LETTERFORM PRIORITY: when the chosen font carries its own treatment, that font's letterform shapes take priority and own the letters; this style governs the sumi ink medium, the bristle and ink-density behavior and the rice-paper ground. FALLBACK MATERIAL: if the font carries no material of its own, render the letters as deep black sumi brush strokes with visible bristle marks, wet ink pooling at stroke starts and feathered dry-brush trails on rice paper. COLOR PRIORITY: keep the font's own colors if specified; otherwise rich black ink fading to grey at thin passages. Square 1:1 composition. Render the exact four Chinese characters “牛卫军印” as the dominant visual element, arranged in a compact vertical column like an official seal inscription. Use rich vermilion-red seal paste pressed onto warm ivory xuan paper, with a dense, slightly uneven pigment fill, subtle gaps where paper fibers break through, and softly feathered edges from the paper’s absorbency. Give the impression of a freshly stamped military seal: confident, weighty, formal, and timeworn rather than glossy. Add faint impressions and rubbed traces around the stamp, with delicate paper grain visible across the open background. A small, restrained red ink smudge may sit near the lower edge, but keep the composition spare and centered. Preserve clear character shapes and exact wording; no extra text, symbols, or decorative borders. Soft directional light reveals the paper texture and the shallow irregularity of the pigment, while generous negative space keeps the seal commanding and legible.