Initial commit: SiteLoft.nl website

Full-service digital agency website built with Astro 5, Tailwind CSS v4,
and TypeScript. Includes 10 pages: homepage, diensten (development, hosting,
growth), pakketten, over ons, blog met eerste GEO-artikel, en contact.

Features: dark theme design system, glassmorphism UI, structured data/schema
markup voor SEO en GEO, content collections voor blog, responsive design,
sitemap generation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

astro.config.mjs

@@ -0,0 +1,19 @@
+// @ts-check
+import { defineConfig } from 'astro/config';
+import tailwindcss from '@tailwindcss/vite';
+import sitemap from '@astrojs/sitemap';
+import mdx from '@astrojs/mdx';
+
+// https://astro.build/config
+export default defineConfig({
+  site: 'https://siteloft.nl',
+  integrations: [sitemap(), mdx()],
+  vite: {
+    plugins: [tailwindcss()]
+  },
+  markdown: {
+    shikiConfig: {
+      theme: 'github-dark',
+    },
+  },
+});