A screenshot-shareable, single-emphasis-per-block knowledge card — a cognitive prosthesis. Every region stands on its own: a stranger seeing only a cropped screenshot still gets one complete idea. Strict grayscale, SF Pro Rounded, no chrome.
The spec
One URL. The whole spec.
Everything an agent needs to build, render, or judge a Supercard — principles, grammar, blocks, pipeline, tokens — lives in one self-contained llms.txt file. Point any LLM at it; there's nothing else to fetch.