"NF" 是一张游戏频道的圆形头像，采用发光霓虹风格。两个从紫渐变到青的粗体字母放在黑底细发光圆环里，缩成小圆也看得清。可以换成你自己的首字母和两种霓虹色。

Create a square 1:1 gaming-channel avatar, designed to remain instantly legible when reduced to 98 × 98 px and cropped to a circle. Render only the exact letters "NF"—no other text, numbers, symbols, or interface elements. Center the letters as one large, compact monogram occupying about 58% of the canvas width, with generous clear space inside a central circular safe area. Use custom ultra-bold geometric capitals: broad, simple strokes, open counters, sharp clipped terminals, tight optical spacing, and no fine details. Give the N a vivid electric-purple face and the F a bright cyan face; apply a narrow luminous edge and restrained colored halo, keeping letter interiors crisp and opaque. Place them on a smooth, near-black circular medallion with a subtle charcoal-to-black radial falloff and a thin, dim violet-cyan rim. Use clean, sharp silhouettes, strong value contrast, controlled neon bloom, and precise studio lighting. Keep every important element well within the central circle; corners remain nearly black and visually quiet. No extra ornament, busy texture, scanlines, glitch effects, scenery, or small print.