feat(hero): rotate three positioning lines on a 10s cycle

All three lines render in the DOM; CSS drives the fade via data-active.
Reduced-motion users see the first line only (no interval, no fade).
Rotation pauses on hover and keyboard focus. aria-live=off on the
rotator so AT does not announce every swap; aria-hidden flips per-swap
to avoid duplicate heading announcements.

Also set vite.build.assetsInlineLimit=0 in astro.config.mjs so Astro
emits the rotator script as a same-origin external file (dist/assets/)
rather than inlining it — required for CSP script-src 'self' compliance.

src/components/sections/Hero.astro

@@ -20,8 +20,14 @@ import TopographicBg from '../TopographicBg.astro';
           Your camels called. They want a GPS.
         </p>
       </div>
-      <h1 class="text-display font-bold text-text mb-6">
-        Run Apache Camel without running Apache Camel.
+      <h1
+        class="text-display font-bold text-text mb-6 hero-rotator"
+        aria-live="off"
+        data-hero-rotator
+      >
+        <span class="hero-line" data-active aria-hidden="false">Run Apache Camel without running Apache Camel.</span>
+        <span class="hero-line" aria-hidden="true">Camel integrations, minus the baggage.</span>
+        <span class="hero-line" aria-hidden="true">Your camels, our caravan. You just ride.</span>
       </h1>
       <p class="text-lg md:text-xl text-text-muted max-w-prose leading-relaxed mb-10">
         The hosted home for your Camel integrations — with deep tracing, replay, and live control built in. Because you chose Camel to stay free, not to stay up all night.
@@ -33,3 +39,57 @@ import TopographicBg from '../TopographicBg.astro';
     </div>
   </div>
 </section>
+
+<style>
+  .hero-rotator {
+    position: relative;
+    display: block;
+    /* Reserve height for the tallest line so no layout shift on swap.
+       Two lines at current H1 size handles all three on most viewports. */
+    min-height: 2.2em;
+  }
+  .hero-line {
+    display: block;
+    opacity: 0;
+    transition: opacity 700ms ease-in-out;
+    /* Stack all lines on top of each other — only [data-active] is visible. */
+    position: absolute;
+    inset: 0;
+  }
+  .hero-line[data-active] {
+    opacity: 1;
+    position: relative;
+  }
+  @media (prefers-reduced-motion: reduce) {
+    .hero-line {
+      transition: none;
+    }
+  }
+</style>
+
+<script>
+  // Hero rotating headline. Bundled by Astro (CSP: script-src 'self').
+  const rotator = document.querySelector<HTMLElement>('[data-hero-rotator]');
+  if (rotator) {
+    const lines = Array.from(rotator.querySelectorAll<HTMLElement>('.hero-line'));
+    const reduced = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
+    if (!reduced && lines.length > 1) {
+      let index = 0;
+      let paused = false;
+      const pause = () => { paused = true; };
+      const resume = () => { paused = false; };
+      rotator.addEventListener('mouseenter', pause);
+      rotator.addEventListener('mouseleave', resume);
+      rotator.addEventListener('focusin', pause);
+      rotator.addEventListener('focusout', resume);
+      setInterval(() => {
+        if (paused) return;
+        lines[index].removeAttribute('data-active');
+        lines[index].setAttribute('aria-hidden', 'true');
+        index = (index + 1) % lines.length;
+        lines[index].setAttribute('data-active', '');
+        lines[index].setAttribute('aria-hidden', 'false');
+      }, 10000);
+    }
+  }
+</script>