feat(site): foreground visualize-first workflow on /designing + Case carousel

/designing §01 is reframed around the words → pictures → code arc.
The phase sub covers teach, shape, and craft in one breath; the body
splits into two labeled micro-steps ("teach · in words" and
"shape + craft · in pictures") so the new image-gen spread reads as
step 2 of the same flow instead of a separate topic. Generated plates
from GPT Image 2 sit as an editorial two-up beside their brand and
hi-fi captions. Also fixes a long-standing font-size mismatch where
<code> inside .designing-phase-sub fell back to the browser's default
monospace.

Homepage: inserts a new "Visualize, then build" slot at position 02 of
The Case carousel, compact two-plate visual, shifts the remaining
eight slots to 03-09.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

public/css/workflow.css

@@ -2835,6 +2835,57 @@
   margin-top: -2px;
 }
 
+/* ─ Panel: Visualize, then build — two plates from GPT Image 2 ─ */
+.why-visual--vizfirst {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 16px;
+  align-items: start;
+  padding: 0;
+  overflow: visible;
+}
+
+.why-vz-plate {
+  margin: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  min-width: 0;
+}
+
+.why-vz-plate-kind {
+  font-family: var(--font-mono);
+  font-size: 0.625rem;
+  font-weight: 600;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  color: var(--color-accent);
+}
+
+.why-vz-plate-frame {
+  background: var(--color-cream);
+  border: 1px solid var(--color-mist);
+  overflow: hidden;
+  height: 240px;
+}
+
+.why-vz-plate-frame img {
+  display: block;
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+  object-position: top center;
+}
+
+@media (max-width: 720px) {
+  .why-visual--vizfirst {
+    gap: 12px;
+  }
+  .why-vz-plate-frame {
+    height: 240px;
+  }
+}
+
 
 /* ============================================
    LANGUAGE section — Palette / Periodic tabs