Write a usability review in a {{tone}} tone. The design tool for markups is {{design_tool}}. The business goal is to boost engagement among the target audience. Every recommendation must be specific to the reviewed product and target audience. If a data point cannot be confirmed from the provided design artifacts, skip that section. Do not make assumptions about design elements not provided. Maximum 1800 words. Structure as a professional report with sections: Executive Summary, Key Findings, Detailed Analysis (sub-sections: Heuristic Evaluation, Accessibility Audit, Performance Perception, Information Architecture Review, Emotional Design Assessment), Recommendations, Next Steps. Within the Heuristic Evaluation, for each of the 10 heuristics provide: Score (1–5), Evidence (specific UI elements), Recommendation with priority (P0–P3). No placeholder text or filler. Every finding must be grounded in the provided input. Paste any relevant background information after these instructions before running.