feat(hero): stack the title one word per line on phones

Below the sm breakpoint the wordmark renders as three centered tspan lines
(Chateau / du / Faune) with "du" at half size, instead of a thin one-line
strip. Line offsets are absolute SVG units so the gap above and below the
small line is equal. A matchMedia listener flips the layout and re-runs
the clip-box measurement so the video clip refits when it changes.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

src/views/HomeView.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { computed, nextTick, onMounted, ref } from 'vue'
+import { computed, nextTick, onBeforeUnmount, onMounted, ref, watch } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { RouterLink } from 'vue-router'
 import { Button } from '@/components/ui/button'
@@ -32,7 +32,23 @@ const titleViewBox = computed(
   () => `${titleBox.value.x} ${titleBox.value.y} ${titleBox.value.w} ${titleBox.value.h}`,
 )
 
-onMounted(async () => {
+// Below the `sm` breakpoint the three words stack one per line (the wide
+// caps face otherwise renders as a thin strip on phones); from sm up they sit
+// on one line. Re-measure whenever the layout flips.
+const titleWords = ['Chateau', 'du', 'Faune']
+// Stacked layout: "du" at half size. Baseline offsets are absolute user
+// units (not em, which would scale with each line's own size) chosen so the
+// gap above and below the small line is the same.
+const titleLineSize = [120, 60, 120]
+const titleLineDy = [0, 83, 133]
+const stackedQuery = '(max-width: 639px)'
+const titleStacked = ref(false)
+let stackedMql: MediaQueryList | null = null
+const onStackedChange = (e: MediaQueryListEvent) => {
+  titleStacked.value = e.matches
+}
+
+async function measureTitle() {
   try {
     await (document as Document & { fonts?: FontFaceSet }).fonts?.ready
   } catch {
@@ -48,14 +64,30 @@ onMounted(async () => {
     return
   }
   if (!bb.width) return
-  const padX = bb.height * 0.08
-  const padY = bb.height * 0.16
+  const lineH = bb.height / (titleStacked.value ? titleWords.length : 1)
+  const padX = lineH * 0.08
+  const padY = lineH * 0.16
   titleBox.value = {
     x: Math.round(bb.x - padX),
     y: Math.round(bb.y - padY),
     w: Math.round(bb.width + padX * 2),
     h: Math.round(bb.height + padY * 2),
   }
+}
+
+onMounted(() => {
+  stackedMql = window.matchMedia(stackedQuery)
+  titleStacked.value = stackedMql.matches
+  stackedMql.addEventListener('change', onStackedChange)
+  measureTitle()
+})
+
+onBeforeUnmount(() => {
+  stackedMql?.removeEventListener('change', onStackedChange)
+})
+
+watch(titleStacked, () => {
+  measureTitle()
 })
 
 const pathways = [
@@ -130,7 +162,18 @@ const featuredEvents = [
                 font-family="'Eileen Caps Black', 'Berry Rotunda', 'UnifrakturMaguntia', serif"
                 font-size="120"
               >
-                Chateau du Faune
+                <template v-if="titleStacked">
+                  <tspan
+                    v-for="(word, i) in titleWords"
+                    :key="word"
+                    x="550"
+                    :dy="titleLineDy[i]"
+                    :font-size="titleLineSize[i]"
+                  >
+                    {{ word }}
+                  </tspan>
+                </template>
+                <template v-else>{{ titleWords.join(' ') }}</template>
               </text>
             </clipPath>
           </defs>