“吾心既宇宙”是使用 FontVibe AI 创作的打字机文字效果。等宽板衬线字敲印在米色纸上，墨色深浅不均，可见色带纹理和轻微错位，纸纤维柔和。

Monospaced typewriter letterforms with authentic mechanical key-strike impressions. Uneven ink distribution — some strokes darker, some lighter, ink thicker at stroke terminals. Aged cream bond paper surface with subtle fiber texture. Vintage Underwood No.5 aesthetic. Warm sepia-tinted black ink. Slightly irregular baseline alignment, individual letter spacing imperfections. Visible ribbon texture on letterforms. Clean vintage typewriter quality. 吾心既宇宙 rendered as five CJK characters struck individually onto aged cream bond paper — each character bearing the physical weight of a single typewriter key-strike, ink pressing into paper fiber with visible embossing depth. Ink density uneven across strokes: brushstroke-weight radicals darker at entry points, trailing lighter where the ribbon lifted. Warm sepia-tinted black ink soaks into the cream bond surface, haloing faintly at stroke terminals where ink bled into paper fiber. Subtle horizontal ribbon texture crosses each character's face. The paper itself is the composition — cream wove surface with visible laid lines and fine cotton fiber under raking side light, casting micro-shadows from each impression crater. Slightly irregular vertical rhythm between characters, as if fed through the platen by hand one line at a time. One or two characters show a faint double-impression ghost, as if the key was struck with hesitation. No borders, no decoration. Vintage mechanical typography on antique manuscript paper, warm single-source light from upper left, rich grain visible in paper shadow.