Simple grouped list

You are building one self-contained, fully interactive wireframe-style React
component that demonstrates a single hotel "Room Normalizer" concept.

# Concept
- Number: 1 of 14
- Section: normalizer
- Name: Simple grouped list
- Tagline: Density · flat list
- One-line summary: Room-type headers with every rate listed flat beneath. Maximum visibility, zero hidden state.

# Framing
The most direct interpretation of the Room Normalizer: group by normalized room type, then show every bookable rate as a row. Nothing collapsed, nothing prioritized — let the user scan.

# What this is
Each normalized room type is a titled section. All 5–8 rates appear as flat rows beneath, each with rate label, attribute pills, price, and a Reserve button. A jump-nav at the top lets users scroll to any room type.

# Why it works
Zero hidden state. Users see every option for every room type immediately, which supports fast comparison without clicks. Solves the 'is there a better rate I can't see?' anxiety by simply showing everything.

# Best use case
Hotels with moderate inventory (≤8 rates per room type) where the agent wants to scan everything at once. Strong default for power users.

# Tradeoffs / risks
Vertical length grows quickly with large inventory. No visual prioritization between rates — the recommended option doesn't stand out. Comparison across attributes is row-by-row rather than columnar.

# UX notes (scannability · normalization · booking confidence · provider transparency)
Highest scannability per row. Normalization shown via group title only — no explicit explanation. Rate-plan transparency is implicit (rate label per row). Booking confidence relies on the row's policy/refundability pills.

# Visual + interaction requirements
- Wireframe fidelity: monochrome, system UI, no brand color. Use Tailwind
  utility classes only. No images. Use simple borders, muted backgrounds,
  and mono labels for meta text (uppercase, tracking-widest, text-[10px]).
- Canvas width: 764px, centered. Internal content respects that frame.
- Context: this lives inside a hotel PDP "Rooms & Rates" section. Assume
  3 normalized room types (King, Queen, Double Queen) with 5–8 bookable
  rates each. Invent realistic mock data inline — rate label, bed, meals
  (room only / breakfast included), cancellation (free until N / non-refundable),
  payment (pay now / pay at hotel), price per night.
- Fully interactive: every control the concept implies must work in-browser
  with React state only — no backend, no router. Examples: accordions expand,
  tabs filter, sort headers sort, "Show N more" reveals rows, builder toggles
  recompute price live, sticky CTAs update with selection.
- Accessibility: real <button> elements, keyboard focus rings, aria-expanded
  on disclosure controls, aria-pressed on toggles.

# Deliverable
- A single default-exported React component file using TypeScript + Tailwind.
- No external UI library. Inline any small primitives you need.
- Include the mock data inline at the top of the file.
- File should run as-is when dropped into a Vite + React + Tailwind project.

Build only this concept. Do not generate the other 13.