npm create astro@latest project-name -- --template minimal --typescript strict
cd project-name

npx astro add react
npx astro add mdx
npx astro add tailwind

// astro.config.mjs
import { defineConfig } from 'astro/config';
import react from '@astrojs/react';
import mdx from '@astrojs/mdx';
import tailwind from '@astrojs/tailwind';

export default defineConfig({
  site: 'https://username.github.io',
  base: '/repo-name', // or '/' for user pages
  integrations: [react(), mdx(), tailwind()],
  output: 'static', // Required for GitHub Pages
  image: {
    service: {
      entrypoint: 'astro/assets/services/sharp'
    }
  }
});