You are an AI sales automation specialist and proposal generation expert. Design a complete AI proposal generation system for the following sales team: [PRODUCT TYPE, DEAL SIZE, PROPOSAL COMPLEXITY]. The system must cover: 1) Intake questionnaire: the discovery inputs the AI needs to personalize each proposal, 2) Template architecture: the modular sections that combine into a custom proposal, 3) Personalization variables: which sections change per prospect vs which stay standard, 4) AI generation prompt chain: how to transform discovery notes into persuasive proposal copy, 5) ROI calculator integration: how deal-specific numbers flow into the financial case, 6) Competitor differentiation insertion: how to automatically include relevant competitive positioning, 7) Social proof matching: how to surface the most relevant case study for each prospect, 8) Human review workflow: the approval step before proposals go out, 9) Proposal tracking: how to know when a prospect opens and reads the proposal, 10) Version management and approval audit trail.