“房大志”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。

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. A tactile handwritten name card on thick warm-cream cotton rag paper, with the rendered text “房大志” as the sole visual focal point. Morning window light arrives from the upper-left at 35 degrees, skimming across the sheet and exposing irregular paper tooth, fine cotton fibers, faint laid lines, and a gradual amber warmth around the paper edges. Walnut-brown ink sits physically above the surface: dense portions carry a restrained wet reflective sheen, dry edges feather microscopically into the fibers, and tiny pooled ink droplets cling at a few expressive stroke terminals. A cooler clear-cream field immediately surrounding the characters preserves crisp legibility against the sepia paper. Soft amber fill from the opposite side retains gentle shadows within the ink relief. Sparse dust motes drift through narrow beams of window light. A small unsealed glass inkwell and a weathered wooden pen rest partly beyond the writing sheet, softly defocused, with no competing decoration. Subtle ink-bloom halos and natural hand-applied irregularities prevent digitally perfect contours. Shallow depth of field, macro paper-material detail, warm photographic color grade, refined print realism.