How it works

1. You ask

   A seven day coastal walking itinerary drawn like a survey sheet: an engraved map of an invented coast easing to each day, a height strip and a day ledger in register, with measured distances, effort by a stated rule, meals, departures and price.

2. Your agent

   1. 1

      Collect the trip

      Every price, place count and claim must come from the person.

   2. 2

      Get the route and measure it

      Put the route next to trip.json.

   3. 3

      Choose the map

      The build crops the map to what the page can show and simplifies every line, and the check fails a page over 400 KB.

   4. 4

      Write trip.json

      Effort is never typed.

   5. 5

      Build

      It lists every problem at once (a missing field, text too long, a stated distance the track does not support, days that do not join up, a typed effort, a covers line that over-claims, a departure whose length does not match the itinerary) and writes nothing until they are fixed.

   6. 6

      Check

      It opens the page at 390, 768, 1024 and 1440 px wide and with reduced motion at 390 and 1440 and fails on: script errors, sideways scrolling, a page over 400 KB, text under 16 px on a phone or 14 px elsewhere (12 px labels), text under AA contrast (map labels too), text cut off or near a phone's edge; any day's slice of the height strip that is not that day's profile at the one shared scale, a drawn route that does not measure its card's distance within 2%, an effort grade the rule does not give, totals or meal counts that do not add up, seat cells that do not match the places left, a missing "Places as of" date or urgency wording; a day that does not become the day on the map, strip, ledger and panel head when scrolled to or tapped on the strip, a map that does not show all of the day's route, map names that overlap or sit on the route; a panel that does not stick, or on a phone takes more than 45% of the screen; keyboard focus that can't be seen; reduced motion that still animates.

   7. 7

      Look at it

      Open the address it prints, scroll slowly through the days, and tap a band on the height strip.

   8. 8

      Record the video (optional)

      Writes out/preview.mp4 (1920×1080, 30 fps, about 20 seconds: a rest on the whole route beside the headline, then each of the first four days with the map moving to it, then the dates and the price) and out/poster.png.

3. You get

   • out/index.html
   • out/embed.html
   • out/preview.mp4
   • out/poster.png