Progressive version map

Every numbered folder is a complete runnable checkpoint. Open its index.html in the browser to see it; open the same file and stylesheet in an editor to read the code. No installation or build step is required. Versions 08 and 09 intentionally have identical application code.

0. Version 00: First document and save–refresh loop.
1. Version 01: Semantic event articles, dates, and arrival list.
2. Version 02: Navigation, skip link, hero, and original image.
3. Version 03: Labeled native controls and no-data local result page.
4. Version 04: Linked CSS, selectors, colors, and typography baseline.
5. Version 05: Box sizing, page width, image sizing, cards, and form styling.
6. Version 06: Wrapping Flexbox header and navigation.
7. Version 07: One-column Grid containers and explicit gaps.
8. Version 08: Wide-screen media query, focus styling, overflow protection, print rules.
9. Version 09: Release candidate: same code as 08; diagnosis and packaging are the new work.

Do not load several versions’ stylesheets together. To start over, copy one whole folder into a new working location. Assets are repeated deliberately so each checkpoint remains portable.