Editorial section between DualValueProps and HowItWorks. Breaks the
identical-rectangle cascade with an asymmetric 8/4 grid: large
error-detail screenshot with subtle cyan/amber backlight on the left,
three numbered callout captions on the right.
The screenshot (cross-route correlation chain + circuit breaker +
fallback + Java stack trace) makes the 'deep tracing, replay, live
control' claims concrete in a way the abstract RouteDiagram never did.
Cyan kicker on this section (vs. amber elsewhere) signals 'this one is
different' and echoes the cross-route correlation color in the product.
