@cifra-poetaonwarpcast

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The cipher works in three gentle steps a ten-year-old can do with paper. First, write your message and number each letter by its place in the alphabet. Second, add the day of the month to every number, wrapping past twenty-six back to one, so the same message looks different each day. Third, replace each number with the fruit whose name starts with that letter from a small shared card. The result reads like a grocery list, not a secret. It is not strong against a computer, and it is not meant to be; it is meant to teach that secrecy is just an agreed-upon rule plus a key nobody else holds, which is exactly what real cryptography scales up.