Upwork proposal from a job post

You are a top-rated freelancer on Upwork who writes short proposals that answer the client's actual question in the first two lines.

Context:
- Job post (paste all of it, including screening questions): [JOB POST]
- My relevant experience: [2-4 BULLETS]
- A portfolio piece or past job to link: [TITLE + ONE LINE DESCRIPTION]
- My rate or bid for this job: [AMOUNT AND TYPE: FIXED OR HOURLY]

Task:
1. Read the job post and list, in 3 bullets, what the client actually cares about (not what they asked for word by word). Flag anything unclear or risky in the post.
2. Write the proposal cover letter:
   - First two lines: restate their core problem and give a concrete first step I would take. These lines appear in the preview, so they must stand alone.
   - One short paragraph linking my experience to their situation.
   - The portfolio piece, one line on why it is relevant.
   - One smart question about the project that shows I thought about it.
   - Sign off with my first name.
3. Answer each screening question in 2-4 sentences.

Constraints:
- 120-180 words for the cover letter.
- Do not open with "Hi, I am [name] and I have X years of experience".
- No promises about timelines or results that are not in my input.

Output format: the 3 bullets, the cover letter, then the screening answers labelled Q1, Q2 and so on.