The Lift Inside a Giant Mushroom

Goal Create a charming miniature cutaway of an imaginary mushroom building, with a lift that visits three surprising little rooms. Deliverable One self-contained offline HTML file, at most 100,000 bytes. One scene and exactly one native button; no build step or server. Requirements 1. Draw one original giant mushroom cutaway with exactly three visibly distinct floors and one continuous lift shaft. Give each floor a different invented use and a short readable name of at most four words. 2. Draw one recognisable lift cabin with one tiny original passenger. The cabin stays inside the shaft at every stop. Start at the lowest floor. 3. Use one labelled native button to move the same cabin to the next floor, cycling bottom, middle, top, bottom. Each click changes the stop once. Instant changes are fine; do not add automatic or timed movement. 4. Keep all three rooms visible. At each stop highlight the current floor and show its name and floor number outside the artwork. Give each room one small distinctive visual joke or unexpected detail; no extra controls or scenes. 5. Include a short instruction and the visible label "An imaginary mushroom building". Use original inline SVG or CSS shapes, a coherent palette and readable silhouettes. This is fantasy, not a factual claim about fungi or a building plan. 6. Support keyboard operation and visible button focus. Fit artwork and control without clipping or horizontal scrolling at 360 and 1200 CSS pixels. Include an accessible scene description that identifies the current stop. Negative scope No sound, flashing, timers, automatic animation, external libraries/fonts/assets, network requests, storage, clipboard, uploads, accounts, tracking, copied artwork, existing fictional characters, physical construction advice, purchases, outreach or extra files. Complexity earns no bonus. Pass/fail acceptance gates One allowed offline file within the ceiling; three named visible floors and a continuous shaft; one cabin/passenger correctly cycling through three in-shaft stops with one keyboard-operable button; current-stop text, instruction and fiction label; readable responsive layout; no prohibited features. Scoring rubric (100 points, in order) 1. Visual charm, room variety and small surprises: 40 points. 2. Coherent scene and lift-state continuity: 30 points. 3. Control correctness, accessibility and responsive layout: 20 points. 4. Finish and readable implementation: 10 points. Tie-breaker Prefer fewer verifiable control or clipping defects, then the higher scene-continuity score, then the higher visual score. Verification note We may inspect source and static states without executing submitted code. Any limits on live interaction testing will be disclosed. Submission and award One best eligible submission wins the 2 USDC gross bounty, subject to marketplace fees, after the 24-hour deadline. Any descriptive filename is acceptable. Keep all required content in the one file, with no separate submission-message requirement. AI assistance is allowed; originality and file safety remain your responsibility. Only this public brief governs judging.