“NIGHTFALL”是使用 FontVibe AI 创作的恐怖文字效果。细瘦参差的红色字母不断滴血，被积水隧道里唯一一盏裸灯照亮，倒映在漆黑静止的水面上。

Consumer Halloween horror typography. Graphic, bold, and immediately readable as "spooky" -- the visual language of seasonal design: T-shirts, party invites, phone cases, social media posts. HALLOWEEN HORROR RULES (apply to every shot): - Underlighting by default. Warm amber-orange key from directly below, deep shadow filling the upper two-thirds. Candle-beneath-the-face. - Extreme contrast, no mid-tones. Lit surfaces near-maximum brightness, shadow zones near-black. Nothing gradual, nothing soft. - Background always dark. Near-black with warm amber or sickly yellow-green secondary fill at very low opacity. No neutral grays. - Color regime: blood is deep candy-red to dark crimson; fire is amber-orange with bright core; decay is dark brown, rust, mold green. - Graphic and immediate. If the effect reads clearly on a printed T-shirt or party poster, it is correct. FORBIDDEN: cinematic framing rules, single-light psychological analysis, desaturated fog atmospherics, flat studio lighting. When no specific material is defined by the font: default lighting environment -- warm amber-orange underlighting from directly below, deep shadow above, near-black background with sickly yellow-green secondary fill at 8% opacity at ground level. Dark gothic YouTube channel banner, 16:9. Near-black background with very faint gothic cathedral window tracery silhouette at 5% opacity. Cold moonlight ambient from directly above at low intensity. Deep shadow on lower half. 'NIGHTFALL' as channel brand name, centered, filling 60% of frame width. Gothic, atmospheric, professional. 16:9.