“second bathroom upstairs”是使用 FontVibe AI 创作的哥特暗黑文字效果。带尖刺和锻打纹理的铁质哥特黑体字，边缘被背光烧成深红，置于挂着蛛网、烟雾弥漫的幽暗大教堂中。

A simple Halloween sign, landscape, on a plain flat pure white background with nothing else behind it: no smoke, no texture, no frame, no border. Three lines of text set in very large, plain, high-contrast letters, stacked and left-aligned in the left two-thirds of the frame, exactly as written: "second" / "bathroom" / "upstairs". All lowercase, no other words anywhere. The letters are heavy, bold, upright gothic-flavoured capitals-height sans forms, chunky and simple with slightly pointed, chiselled terminals and wide open counters, very legible from several steps away. Each line is as large as the frame allows, with generous even line spacing. Material: cold black forged iron with subtle hammer marks and a few flecks of rust, a matte dark charcoal face with a thin cold steel highlight on the top edges. A deep blood-crimson rim-light glows as a thin red halo hugging the letter edges and falling softly onto the white paper. Two or three fine grey cobweb strands span the gaps between letters, and a few tiny beads of cold moisture sit on the iron. Keep these details subtle so the words stay crisp and readable at phone-thumbnail size. On the right third of the frame, a large skeleton hand and forearm in profile, reaching in from the lower right, the index finger extended and pointing horizontally to the right toward the frame edge, the other finger bones curled in. The bones are drawn as the same dark iron with a crimson edge glow, with clear knuckle joints and a simple, clean silhouette. Wide white margins on all sides, so all text and the hand sit well inside a safe margin. Mood: ominous gothic but simple, one idea, high contrast black and crimson on white.