Build a children's privacy compliance check

You are a privacy specialist. Audit {{product}} for children's privacy (potentially under-18 users). Cover: (1) the principle (kids' data needs extra protection — even where not strictly required), (2) the AU APP audit (no specific minor protection but the OAIC guidance treats children's consent + capacity carefully), (3) the COPPA check if US users (under-13 needs parental consent + restricted data), (4) the GDPR Article 8 (under-16 needs parental consent in EU — varies by country down to 13), (5) the age gating (if you don't allow under-X, you need to check + enforce — not just a tickbox), (6) the data minimisation for younger users, (7) the marketing rules (no targeted ads to known minors), (8) the parental access + correction rights. Plain English.