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Use when designing for Core Web Vitals specifically. Covers each metric, the design patterns that improve them, and how to balance vitals with visual richness.
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/x3allamerican/design-skills-fleetsafety --skill core-web-vitals-design命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
Use when designing 404 pages and the broader empty-state pattern library. Covers tone, illustration, search recovery, and the difference between 'no data yet' and 'this URL doesn't exist'.
Use when designing A/B tests. Covers hypothesis-driven testing, sample-size calculation, the test-design template, and the cultural rituals that make testing productive.
Use when shipping any user-facing UI. Covers the non-negotiable accessibility baseline: contrast, focus states, semantic HTML, keyboard navigation, screen-reader support, motion preferences. The minimum to avoid embarrassment and ADA risk.
基于 SOC 职业分类
正在显示 SKILL.md
| name | core-web-vitals-design |
| description | Use when designing for Core Web Vitals specifically. Covers each metric, the design patterns that improve them, and how to balance vitals with visual richness. |
Core Web Vitals are real ranking factors AND real user experience.
Identify the largest element (usually hero image or h1). Preload critical resources. Use modern image formats. Reduce above-the-fold web font weight.
Reduce JS execution time. Break up long tasks. Use Web Workers for heavy compute. Defer non-critical JS.
Reserve space for images (aspect-ratio). Avoid injecting content above viewport. Reserve space for ads, embeds, late-loading components.
Hero image loaded after webfont (LCP slow). Heavy analytics on first paint (INP). Late-injected banner shifting layout (CLS).
Applied across the X3 Compass design system.