Conciseness

The body is mostly efficient, purpose-built guidance (word-count targets, forbidden-phrase lists, A/B/C competitor branching), but includes unnecessary padding: the "脚本内置的排版规范" section enumerates the script's internal CSS ("H1标题=#1a5276深蓝、H2=#1e8449绿色..."、页眉、页脚) even while stating "无需手动调整", duplicating what already lives in md_to_pdf.py, and per-section 篇幅 guidance is repeated again in the 篇幅总览 table. This matches the score-3 anchor (mostly efficient with some unnecessary explanation that could be tightened) rather than 4, where such redundancy would be only minor.

Actionability

Guidance is copy-paste ready throughout: exact install command ("pip install weasyprint markdown --break-system-packages"), a ready-to-embed sub-agent prompt block including a concrete arxiv API call ("curl -s \"https://export.arxiv.org/api/query?search_query=all:关键词1+AND+all:关键词2&max_results=10\""), a concrete conversion invocation with arguments, explicit per-section word ranges, scene A/B/C branching rules, a report structure template, and file-naming conventions. This matches the score-5 anchor (fully executable commands covering common cases); nothing here is pseudocode or vague.

Workflow Clarity

The five-step sequence (前置准备 → 第一步信息收集 → 第二步纵向 → 第三步横向 → 第四步交汇 → 第五步PDF生成) is clearly ordered, and validation is explicit with feedback loops: the 信息充分性自检 ("信息不够就再补搜。不要凑合。"), source-priority rules, and a 13-item 质检清单 before delivery. This matches the score-5 anchor (clear sequence, explicit validation steps, error-recovery loops, checklist for a complex process).

Progressive Disclosure

The bundle provides references/schema.json and scripts/md_to_pdf.py, and the script is clearly and repeatedly referenced from the body — but references/schema.json is never mentioned anywhere in SKILL.md, leaving a whole detailed analysis-structure file orphaned and unnavigable. Meanwhile, sizable content that belongs in a reference file (the ~45-line 写作风格 guide, the inlined CSS 排版规范) is inlined in SKILL.md, and the body points to an external non-bundled skill ("详细定义请参考 khazix-writer skill") which slightly contradicts its own claim that the style guide is built in. This matches the score-3 anchor (some structure, references not clearly signaled, content that should be separate is inline); it is not 4 because a provided reference file is entirely unreachable from the overview.

Specificity

The description lists multiple concrete actions covering the full pipeline: "纵轴追踪从诞生到当下的完整生命历程（以叙事故事呈现）", "横轴在当下时间截面上与竞品/同类进行系统性横向对比", "交叉两条轴产出独到洞察", and "最终产出一份排版精美的PDF研究报告". Coverage is comprehensive across the skill's four capability stages, matching the score-5 anchor; it is not the level-4 anchor because no capability stage is missing.

Completeness

Both 'what' and 'when' are answered explicitly and concretely: what is stated via the dual-axis description and PDF deliverable; when is stated via "当用户想要系统性研究一个产品、公司、概念、技术或人物时使用", an explicit trigger-word list, implicit-context guidance, and explicit negative boundaries ("不要用于简单的名词解释...不要用于公众号写作...不要用于纯标题摘要生成"). This matches the score-5 anchor exactly; the level-4 anchor's weaker 'when' does not apply.

Trigger Term Quality

Trigger coverage is comprehensive and natural, including many colloquial synonyms a Chinese-speaking user would actually say: "研究一下", "帮我分析", "深度研究", "做个研究", "调研一下", "竞品分析", "帮我摸清楚", "帮我搞懂", "帮我做个deep research", plus edge phrasings like "帮我了解一下XX" and "XX是什么来头". This matches the score-5 anchor (comprehensive natural terms including synonyms), well above the 4 anchor which expects missing terms.

Distinctiveness Conflict Risk

It carves a clear niche (横纵分析法 deep research) and explicitly disambiguates against named sibling skills ("不要用于公众号写作（那个用 khazix-writer）", "不要用于纯标题摘要生成（用 wechat-title）"), but broadly applicable trigger phrases like "帮我分析", "深度研究", "调研一下" retain some overlap risk with other general research/analysis skills not named here. This sits between the 4 anchor (mostly distinct, minor overlap with closely related skills) and the 5 anchor; it is not 5 because those generic research triggers could still route to a different research skill.