Restructure hero: image at natural size overflowing, intro as text, no hard-coded copy

- views/partials/page-hero.php: removed the page-intro partial call. The
  intro is now rendered inline as a single .page-hero__intro div
  containing the editor-supplied intro text only (no hard-coded
  heading). The H1 is rendered with a dedicated .page-hero__heading
  class for typography control. Breadcrumbs + H1 + intro are in a
  single .page-hero__content container.
- views/partials/page-intro.php: deleted (no longer used).
- styles/blocks/page-hero.css: rewritten layout. The hero has a min-height
  of clamp(31rem, 38vw, 36rem). .page-hero__media is a foreground
  absolutely-positioned img on the right (no mask, no cover, no
  object-fit), with bottom: -10% so the image's bottom hangs over
  the bottom edge of the hero. The vector is positioned at
  bottom: clamp(1.5rem, 4vw, 3rem) with some spacing from the bottom
  edge, full-width on the left. Both elements stay above the content
  layer (z-index 10) and below the breadcrumb/title text. The H1 uses
  Quincy serif at clamp(2.5rem, 6vw, 4.5rem). The intro text is
  capped at 36rem to sit alongside the H1 without spanning the full
  hero width.
- tests/inner-page.spec.js: removed the now-obsolete
  .page-hero__intro-heading / .page-hero__intro-text assertions (the
  intro is a single text block now).

Co-Authored-By: Claude <noreply@anthropic.com>

styles/blocks/page-hero.css

@@ -2,78 +2,71 @@
  * Scoped to .page-hero to avoid affecting the homepage-hero block. */
 
 .page-hero {
-    background:
-        linear-gradient(83.68deg, #032F46 3.13%, #006196 45.91%, #8FC9E6 96.27%);
+    background: linear-gradient(83.68deg, #032F46 3.13%, #006196 45.91%, #8FC9E6 96.27%);
     isolation: isolate;
+    min-height: clamp(31rem, 38vw, 36rem);
     overflow: hidden;
     position: relative;
 }
 
-.page-hero__media {
-    inset: 0;
-    -webkit-mask-image: linear-gradient(to left, transparent 0%, black 50%);
-    mask-image: linear-gradient(to left, transparent 0%, black 50%);
-    position: absolute;
-    z-index: 1;
-}
-
-.page-hero__media img {
-    display: block;
-    height: 100%;
-    object-fit: cover;
-    object-position: right center;
-    width: 100%;
-}
-
-.page-hero__vector {
-    bottom: 0;
-    height: auto;
-    left: 0;
-    pointer-events: none;
-    position: absolute;
-    width: 100%;
-    z-index: 2;
-}
-
 .page-hero__content {
+    padding-block: clamp(2rem, 6vw, 4rem);
     position: relative;
     z-index: 10;
 }
 
+.page-hero__heading {
+    color: var(--color-light, #fff);
+    font-family: var(--font-quincy, 'Quincy', serif);
+    font-weight: 400;
+    font-size: clamp(2.5rem, 6vw, 4.5rem);
+    line-height: 1.05;
+    margin-block: clamp(1.5rem, 4vw, 3rem) 0;
+    max-width: 36rem;
+}
+
 .page-hero__intro {
-    margin-top: clamp(2rem, 6vw, 4rem);
+    color: var(--color-light, #fff);
+    font-size: clamp(1rem, 1.5vw, 1.25rem);
+    line-height: 1.5;
+    max-width: 36rem;
+    opacity: 0.95;
 }
 
-.page-hero__intro-inner {
-    display: grid;
-    gap: clamp(1.5rem, 4vw, 3rem);
-    grid-template-columns: 1fr;
+.page-hero__media {
+    bottom: -10%;
+    height: auto;
+    max-height: none;
+    pointer-events: none;
+    position: absolute;
+    right: clamp(1.5rem, 4vw, 4rem);
+    width: clamp(18rem, 32vw, 28rem);
+    z-index: 1;
 }
 
-@media (min-width: 768px) {
-    .page-hero__intro-inner {
-        grid-template-columns: 1fr 2fr;
-    }
+.page-hero__vector {
+    bottom: clamp(1.5rem, 4vw, 3rem);
+    height: auto;
+    left: 0;
+    pointer-events: none;
+    position: absolute;
+    width: clamp(28rem, 60vw, 56rem);
+    z-index: 5;
 }
 
 @media (max-width: 767px) {
+    .page-hero {
+        min-height: clamp(28rem, 130vw, 40rem);
+    }
+
     .page-hero__media {
-        -webkit-mask-image: linear-gradient(
-            to bottom,
-            rgb(0 0 0 / 0.9) 0%,
-            rgb(0 0 0 / 0.45) 100%
-        );
-        mask-image: linear-gradient(
-            to bottom,
-            rgb(0 0 0 / 0.9) 0%,
-            rgb(0 0 0 / 0.45) 100%
-        );
+        bottom: -8%;
+        right: 0;
+        width: 60vw;
     }
 
     .page-hero__vector {
-        bottom: 0;
-        left: 0;
-        right: auto;
-        width: 100vw;
+        bottom: clamp(1rem, 3vw, 2rem);
+        width: 80vw;
     }
 }