"BL" 是一个科技频道的字母组合 logo，采用扁平几何风格。两个由干净直线构成的电光蓝实心字母居中放在纯白底上，简洁到当成视频角落的小水印也能看清。可以换成你自己的首字母和一种品牌色。

Create a finished 1024 × 1024 square monogram logo for a tech channel, centered on a perfectly plain solid white background. Render only the exact uppercase letters “BL”; no channel name, tagline, extra symbols, border, texture, or background elements. Design the B and L as two distinct, immediately readable geometric letters built from consistent, substantial electric-blue strokes with crisp right-angle cuts. Give the B a strong vertical stem and two clearly separated squared bowls with open, generous white counters; construct the L from a matching vertical stroke and broad horizontal foot. Align both letters on one baseline and optically balance their spacing so they read as a single compact mark without merging into an ambiguous glyph. Use flat solid electric blue, sharp vector-like edges, and no gradients, shadows, glow, or fine details. Let the monogram occupy about 62% of the canvas width and height, with generous even white safe margins. High-contrast, clean, scalable logo artwork, legible when reduced to 150 × 150 px.