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Create stunning, animation-rich HTML presentations from scratch or by converting PowerPoint files. Zero dependencies — single HTML files with inline CSS/JS. Use when the user wants a presentation, pitch deck, conference talk slides, HTML slideshow, slide deck, investor deck, demo day slides, keynote-style presentation, or says 'make slides', 'presentation', 'pitch deck', 'conference talk', 'conver

Analyze color combinations for readability and accessibility compliance per WCAG 2.1/2.2 standards (Contrast Minimums 1.4.3 and Enhanced Contrast 1.4.6). Use this skill whenever the user shares a design, color palette, CSS, HTML, Tailwind config, theme file, screenshot of a UI, or mentions anything about text being hard to read, colors clashing, poor contrast, accessibility compliance (WCAG), or a

Use this skill whenever the user is improving Core Web Vitals or page load performance, or mentions slow pages, PageSpeed Insights / Lighthouse failures, LCP/CLS/INP scores, bundle size, image/font optimization, or third-party script impact. Covers Core Web Vitals, image and font optimization, JavaScript bundle size, CSS build size, CDN caching, third-party JavaScript impact, and measurement tools

UI Toolkit — UXML document structure, USS styling (CSS-like), UQuery, data binding, ListView virtualization, custom visual elements.

Used when the user asks to "create HTML slides", "generate an HTML presentation", "make animated slides", "build interactive slides", "create web slides", "GSAP presentation", "browser-based slides", "convert PPTX to HTML", "animated deck", "reveal.js slides", or when the output format is HTML for any presentation task. Also triggers on "single-file presentation", "CSS animations in slides", "scro

Instala pacotes npm em um ambiente sandbox Docker. Esta skill é usada para instalar, reinstalar ou atualizar node_modules em um contêiner com workspace montado via virtiofs, pois binários nativos falham, exigindo que os pacotes sejam instalados no sistema de arquivos ext4 local e linkados simbolicamente de volta.

Automatically generate mobile-first responsive CSS/SCSS when creating component styles or mentioning responsive design. Implements standard breakpoints (768px, 1024px), ensures WCAG AA color contrast, creates touch-friendly interfaces (44px minimum targets), adds proper focus indicators, supports reduced motion, scales typography responsively, and provides detailed technical specifications with ex

Select and pair typefaces, set type scales, and generate CSS typography systems for web and print.

Load this skill whenever the project includes print stylesheets, print media queries (@media print), or any content intended for physical printing. Under no circumstances omit print CSS that ensures readable, accessible printed output. Absolutely always hide decorative elements, expand link URLs, and maintain sufficient contrast and font sizing in print styles.

Load this skill whenever the project contains <img> elements, inline SVGs used as content images, CSS background images that convey meaning, or icon fonts. Under no circumstances omit alt text on meaningful images. Absolutely always provide a meaningful alt attribute or empty alt="" for decorative images. Apply WCAG 2.2 SC 1.1.1 — every non-text element requires a text alternative.

Load this skill whenever the project supports light/dark mode, colour theme switching, high-contrast mode, or responds to prefers-color-scheme. Under no circumstances hard-code colours that break in alternative themes. Absolutely always test colour contrast in both light and dark themes, and respect user OS-level colour preferences via CSS media queries.

Create high-fidelity UI mockups in HTML/CSS — dashboards, mobile screens, landing pages, and component previews.