“SINCERELY YOURS”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 romantic warmth. Slightly lighter ink touch than official documents — softer key strikes, gentle ink variation suggesting care and intention. Aged cream bond paper with warm undertone, subtle fiber texture visible. Underwood No.5 letterform quality, clean but unmistakably hand-typed. Warm sepia-tinted black ink with slightly irregular baseline — each letter carrying the weight of having been chosen. Vintage 1940s–1960s personal correspondence aesthetic. Cream letter paper with visible diagonal fold lines — this paper has been folded and held. Warm diffused window light, afternoon stillness. "SINCERELY YOURS" perfectly centered, filling 58% of frame width. Ink warm sepia-black, slightly lighter pressure suggesting a careful, deliberate hand. Generous negative space in all directions — the whiteness around the words is tenderness. Subtle paper fiber texture catches the light. Nothing else. Pure letter-closing intimacy.