“F”是使用 FontVibe AI 创作的中世纪文字效果。灵感源自古代手抄本的排版：装饰性字母、羊皮纸质感、华丽花边和中世纪书法。

Create a square illuminated-manuscript artwork featuring exactly one rendered character: “F”. Make it a grand 13th-century Lombardic versal capital, centered and large, with broad generous proportions, gently rounded strokes, and clear, unmistakable F structure. Paint distinct interior stroke zones in flat opaque deep ruby red, cobalt blue, and emerald green. Rim every stroke in burnished gold leaf, with sharp warm highlights from directional amber candlelight. Add delicate gold vine tendrils and leaf terminals extending organically from serif ends; place tiny gold rosettes and foliate scrollwork within the letter’s open spaces without obscuring its silhouette. The F is the sole focal subject, occupying about 65% of the canvas height. Set it against aged cream-to-ochre vellum with subtle fibers, faint foxing marks, and restrained manuscript surface texture. Light from the upper right like a nearby candle, creating brilliant gold-leaf glints and soft directional shadows on the parchment. Add a fine, understated Celtic-knot border in jewel pigments and gold, leaving generous breathing room around the letter. Hand-painted opaque pigment, gold-leaf detailing, crisp ornament, tactile parchment, high-resolution rendering. No other letters, words, captions, or symbols that resemble text.