Background image for a [BRAND] piece. Format [1:1 / 4:5 / 9:16 / 16:9].
Style: cinematic photo or render, clean, with empty space at the [TOP / BOTTOM / LEFT] to place a headline and logo later.
Palette: [BRAND COLORS, see below].
Forbidden: text, letters, numbers, logos, watermarks and people.

Palettes (from brand.json):
- Arden: night #120C33, violet, green accent #93C11F.
- UETC: night #120C33, yellow accent #F6D023.
- Logrus: charcoal black #141213, red accent #FF003D.
- Brandcade: gradient #641974 → #0361AF → #6FC5EB, white.
- EGDC: night #120C33, green accent #93C11F, pixels.
