Fix — Footer branding: "Security powered by" → "Powered by"

What Was Broken

Incorrect branding scope

Footer said "Security powered by Pantheon" — implying Pantheon only handles security. Pantheon powers the entire platform, not just the security layer.

Root Cause

Original site copy scoped Pantheon narrowly to security. The nav and sovereign banner already said "Powered by Pantheon" correctly, but the footer still had the old "Security powered by" qualifier.

What Was Fixed

Footer line 665

Before: Security powered by Pantheon

After: Powered by Pantheon

Test

PASS — All 4 "Powered by" references now consistently say "Powered by Pantheon" (nav, sovereign banner, security section, footer). Zero instances of "Security powered by" remain.

Files Changed

site/index.html — line 665