× Never place the wordmark on a light or coloured background. Black only.
× Never use lifestyle photography with non-hype subjects. The brand is sneaker-first, cultural-second.
× Never use third-party brand logos (Nike swoosh, Jordan wings, Adidas trefoil) in any paid media. Legal risk.
× Never use soft or vague language: "check out", "take a look", "might be interested". Drive action hard.
× Never dilute the lime. Don't use gradients, tints, or opacities of the accent colour except in ghost/hover states.
× Never imply exclusivity you can't back up. If stock is limited, say the number. If it's not, don't fake urgency.
× Never skip the authentication mention. It's the core differentiator. Every ad should reference it.