Fluent UI React v9 for Word Add-ins Quick Start Wrap the app root with and a theme: Core Concepts Component Architecture v9 components separate behavior, styling, and rendering into hooks: This enables recomposition - reassemble hooks to create custom variants without forking. Styling with Griffel Critical rules: - Never concatenate Griffel classes with ; always use - Call once per element, not nested - Use for all colors, spacing, typography; never raw values - allows CSS shorthands; requires helpers Slots Slots let consumers customize component parts: Event Handlers v9 uses the convention:…