# Astro v6 Architecture Rules (Strict Mode)
## 1. Core Philosophy
- Follow Astro’s “HTML-first / zero JavaScript by default” principle:
- Everything is static HTML unless interactivity is explicitly required.
- JavaScript is a cost → only add when it creates real user value.
- Always think in “Islands Architecture”:
- The page is static HTML
- Interactive parts are isolated islands
- Never treat the whole page as an app
- Before writing any JavaScript, always ask:
"Can this be so...