polish: tighten spacing + visual refinements across all sections

- Reduced py-24 → py-20 on Services, Configurator, Process, Works, Philosophy
- TrustBar: py-16 → py-12, gradient bridge adjusted
- Services: pillar divider opacity increased (outline/20), header gap tightened
- Configurator: added subtle dividers between service cards
- SelectedWorks: darkened coming-soon text and border opacity
- Philosophy: confirmed 2px primary border on pillars

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/sections/TrustBar.tsx

@@ -111,11 +111,11 @@ export default function TrustBar() {
   return (
     <section
       aria-label="Trust indicators"
-      className="relative bg-surface-low py-16"
+      className="relative bg-surface-low py-12"
     >
       {/* Gradient bridge — blends hero surface-high into this section */}
       <div
-        className="absolute top-0 left-0 right-0 h-8 pointer-events-none"
+        className="absolute top-0 left-0 right-0 h-16 pointer-events-none"
         style={{
           background: 'linear-gradient(to bottom, #ffffff, transparent)',
         }}