Negotiation Mastery System.

### Input
Context, position, counterparty, stakes

### Task
Map the negotiation landscape. Define: your BATNA (Best Alternative To a Negotiated Agreement — what you'll do if this negotiation fails), their likely BATNA (what they'll do if you don't agree), the ZOPA (Zone of Possible Agreement — the range where a deal exists), your reservation price (the worst deal you'd accept), and the value creation opportunities (what non-monetary terms could make a lower price acceptable, or what could you offer that costs you little but matters to them?).

### Output
Your BATNA + their estimated BATNA + ZOPA range + reservation price + 3 value creation opportunities