feat(marketing-site): American Dream cover band + narrative weave

- Cover: publisher-style belly band across the lower book cover using a
  compressed banner (2.2MB screenshot -> 60KB WebP, resized to display
  needs), cropped via a width-locked <img> + percentage offset so the
  wordmark stays legible rather than getting zoomed/cropped sideways.
  Compass + wordmark compacted into a row to make room.
- Copy: the theme woven through Field Notes, Contents, the Founding
  Sponsor tier, and one direct FAQ entry -- mostly oblique, since the
  cover already states it explicitly. Hero/Recipe/Capture/Footer left
  untouched on purpose.

marketing-site/components/FAQ.jsx

@@ -20,6 +20,10 @@ const QA = [
     q: "Why subscribe instead of buy once?",
     a: "Because a static AI book is out of date in months. The subscription is what keeps every workflow current — and it’s what funds the practitioners keeping them that way.",
   },
+  {
+    q: "Why frame this around the American Dream?",
+    a: "Because for most of the people writing and reading this guide, real fluency with these tools isn’t a slogan — it’s a practical ladder. Nobody in this book inherited their edge; they built it, one real skill at a time. We think this is the next one worth building.",
+  },
 ];
 
 export default function FAQ() {