fluent2-design-system

Build interfaces using Microsoft's Fluent 2 design system via @fluentui/react-components (v9). Use when the user requests UI built with Fluent UI, Fluent 2, Microsoft design language, Teams-style UI, or Office-style interfaces. Covers: React component usage, theming with FluentProvider, styling with makeStyles/tokens/Griffel, design token application, layout patterns, typography, color system, accessibility, dark/light/high-contrast themes, and custom branding. Also triggers for: "make it look like Teams/Outlook/Office", "use Fluent", "Microsoft design system", "@fluentui", or any request to build UI that follows Microsoft's design language. Do NOT use for Fluent UI v8 (@fluentui/react) unless migrating to v9.