fix(qa2): responsive Latest-news/FAQ at tablet + muted-text contrast sweep

- Latest-news row and FAQ grid now go 3 -> 2 -> 1 columns (added a 1024px
  tablet step); .news-card drops its brittle fixed 405.33px width and fills a
  responsive grid cell. Fixes cramped 3-across cards on 769-1024px.
- Contrast: replace #98A2B3 text color (2.58:1 on white) with the palette
  muted #667085 (~4.8:1) across 13 CSS files (31 text-color uses; borders/
  backgrounds untouched, verified none on dark backgrounds).
- Re-stamped cache-bust (v=6770822f).

Note: the ~20px-looser header top-gap at 769-1024px is left as a minor,
lower-risk follow-up (would need a coordinated multi-page padding pass).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

css/pages/_blog.css

@@ -55,7 +55,7 @@
     display: inline-block;
     font-size: 12px;
     font-weight: 600;
-    color: #98A2B3;
+    color: #667085;
     border: 1px dashed #D0D5DD;
     border-radius: 999px;
     padding: 3px 10px;
@@ -77,7 +77,7 @@
     font-weight: 700;
     text-transform: uppercase;
     letter-spacing: 0.06em;
-    color: #98A2B3;
+    color: #667085;
     margin: 0 0 16px;
 }