“FM”是使用 FontVibe AI 创作的手写体文字效果。细腻的胡桃棕墨水手写体，写在暖米色纸上，字母流畅相连、回环柔和，旁边是蘸水笔和墨水瓶。风格灵感来自一张参考图：Reproduce the exact visual style of the reference image — including typography treatment, color palette, texture, lighting, and composition. Replace only the text with the new content. Do not alter any other visual elements.。

Intimate writing-desk light field — warm directional light arriving from a 30–45-degree upper-left angle, the quality of morning window light filtering through gauze or the halo of a brass desk lamp; this raking light travels across the paper surface at low angles, revealing fiber tooth and ink body depth simultaneously. Secondary warm fill from the right side at 20–25% key intensity preserves intimate shadow without eliminating it. The substrate is always textured paper: hot-press cotton rag, aged parchment, smooth vellum, cream laid stock, or cold-press watercolor paper — paper surface grain and fiber are visibly revealed under raking light, with a subtle warmth yellowing toward the edges. Ink sits proud on the surface: a subtle wet sheen at maximum-density stroke points, matte dry finish at hairlines; at dramatic stroke termini, micro-droplets of ink may cling to paper fiber. Atmospheric details: floating paper dust motes caught in window light rays, faint ink bloom halos around dense stroke endpoints. Color temperature: warm amber-sepia throughout the background environment and paper surface; slightly cooler clear-white at the central text zone for luminous contrast. Background beyond the writing surface: soft warm bokeh or warm shadow — never competing with the foreground. Letter surface color and material are defined entirely by each font's own prompt_core — this style provides only the writing-desk light field, paper substrate environment, and ink-on-surface atmosphere. When no specific material is defined by the font: morning window light from upper-left at 35 degrees on warm cream cotton laid paper, paper fiber texture clearly visible under raking light, soft amber fill from the right at 25% intensity. Cream hot-press cotton rag paper fills the entire frame — the paper surface IS the background. Raking morning light from the upper-left at 30 degrees reveals every fiber and chain line in the paper tooth; the paper glows warmly toward the light, deepening to a rich parchment amber toward the lower-right corner. The calligraphic text sits centered in the upper-to-mid area of the frame, occupying most of the available width. Ink sits proud on the paper surface: thick downstrokes hold a subtle wet sheen, hairline upstrokes almost disappear into the cream fibers. In the lower-right area of the paper: a deep crimson wax seal — round, roughly 2 cm — stamped with a small botanical motif, its raised relief casting a tiny shadow. No table surface visible. No background beyond the paper itself. The paper edges are softly lit, with a very slight vignette. This is a letter, complete and intimate, before it was ever sent.