01 Banner, dark — assets/social/youtube/banner-dark.png · 2560 × 1440

Dark channel banner: lockup, tagline and topic strip in the safe area, blueprint glyph wings

02 Banner, light — banner-light.png · same geometry, re-inked

Light channel banner, identical layout on white

03 Profile photo & watermark — avatar.png 800 × 800 · watermark.png 150 × 150

Channel avatar98 · channel
48 · row
24 · comment
Video watermarkwatermark · transparent

These are renders, not sources. The sources are the HTML artboards in brand-content-creation/youtube/export/ — 1:1 pixel pages styled with the system's own tokens, glyphs and fonts. Change the tagline or the topic strip there and re-render with the headless-Chrome command in each file's header (or export/README.md); never edit the PNGs. The light banner is derived from the dark one by palette substitution, so the two can never drift in geometry.