The target readers are undergraduate students. The style benchmark is excellent high school supplementary teaching materials: more detailed than university lectures, with sufficient background building, step-by-step example solutions, and self-assessment options after learning. However, it does not role-play as a teacher — no "classmates", no classroom dialogue, and interjections are only used to guide thinking.

Two failure modes must be checked one by one before delivery; if either occurs, rework is required:

Anti-slop does not mean writing less; thoroughness does not mean padding. Both conditions must be satisfied simultaneously.

Only ask questions that will substantially change the output: coverage scope (depth of explanation), purpose (final exam review / regular course follow-up / preview — which affects the focus on exam points and difficulty of self-assessment), and output directory. If the output directory is not provided, ask once; for other cases, use reasonable default values and explain the assumptions made in the delivery report. For details that cannot be confirmed through consecutive questions, make decisions independently and do not ask follow-up questions repeatedly.

Three reference files must be read before writing (read each once, only need to review the checklist parts during writing):

The iron rule for writing order of each section: Motivation → Intuition/Analogy → Precise Definition → Examples/Example Problems → Common Mistake Warning → Section Recap. Never open with a definition or formula.

Minimum thoroughness requirements (anti-laziness, mandatory):

Minimum anti-AI tone requirements (anti-fluff, mandatory):

Correctness self-discipline (implemented during writing, not added after finishing):

After the files are written, report in the conversation: which files were generated (including line count); list of learning objectives O1…On; list of uncertainties (what was marked and why); suggested follow-ups (concept notes that can be added, variants that can be practiced additionally).