Opinionated preferences for writing maintainable, accessible and responsive CSS in modern web apps. 来源：https://prompts.chat/prompts/cmveyalp60001jn075ox6wlw4
Audits foreground/background color pairs for WCAG 2.x contrast (AA and AAA for normal and large text), reports ratios and pass/fail, and notes color-blindness risks. Use when checking UI palettes, design tokens, or asking "is this gray-on-white readable?". Includes a stdlib Python contrast checker with --self-test. 来源：https://prompts.chat/prompts/cmvan99yi000ml6067hv94yay
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs. 来源：https://prompts.chat/prompts/cmjem343u0009vf0rhldtvt6p
Checks a site's robots.txt and XML sitemap offline the way Google reads them. Picks the crawler's group, resolves longest-match Allow and Disallow with wildcards, and tests the URLs that must be crawlable or blocked. Flags whole-site blocks, sitemap URLs that robots.txt blocks, blocked CSS and JS, unsupported noindex and crawl-delay lines, off-site, duplicate or invalid sitemap entries. Includes a stdlib Python checker with --self-test. 来源：https://prompts.chat/prompts/cmvknfgw20009jh08c4lzkn3f
Guide to building a full-stack web application with secure user authentication, high performance, and robust user interaction features. 来源：https://prompts.chat/prompts/cmjnc496x0001ky04kh6wq80b
