fix(ui): make Justine palette visible on marketing + trim rainbow chrome

- Replace blue/purple gradients with ink gradient text and cream/parch CTA surface
- Step badges and transformation icons use primary (ink) fills
- /features page icons unified to text-primary; Lora section titles
- Tree view status colors use semantic tokens instead of blue/green

Made-with: Cursor

marketing/components/features.tsx

@@ -6,7 +6,7 @@ export function Features() {
     <section id="features" className="w-full py-16 md:py-24">
       <div className="container mx-auto px-6">
         <div className="mx-auto flex max-w-[980px] flex-col items-center gap-4 mb-12">
-        <h2 className="text-3xl font-bold leading-tight tracking-tighter md:text-5xl text-center">
+        <h2 className="font-serif text-3xl font-semibold leading-tight tracking-tight md:text-5xl text-center">
           {homepage.features.title}
         </h2>
         <p className="max-w-[750px] text-center text-lg text-muted-foreground md:text-xl">