feat(website): responsive / mobile layouts

Make the marketing site mobile-friendly across every page and section.
Desktop appearance is unchanged; all breakpoint logic targets <=768px.

- Fluid section padding via clamp(); equal grids use auto-fit/minmax,
  asymmetric grids stack to one column via scoped-CSS media queries
- Nav: real hamburger menu on mobile (links, lang toggle, login, CTA)
- ProductMockup: scales the whole dashboard to fit (zoom) instead of
  reflowing its internals into a tall stack
- Lower oversized heading clamp() minimums so titles no longer overflow
  at ~390px (hero, page headers, final CTA, brand cover/chapter)
- HowItWorks: row-gap when steps stack so node markers clear the text
- Compare + partners tables: stacked rows now label each value with its
  column (Dezky vs hyperscaler / CSP) instead of an ambiguous header
- Footer columns, tiers, calculator and tables stack cleanly on mobile

apps/website/components/landing/Footer.vue

@@ -23,8 +23,9 @@ function onLink(e: MouseEvent, href: string) {
 
 <template>
   <footer :style="{ background: C.bone, color: C.carbon, borderTop: `1px solid ${t.border}` }">
-    <LandingContainer pad="80px 64px 40px">
-      <div :style="{ display: 'grid', gridTemplateColumns: '1.4fr repeat(4, 1fr)', gap: '48px' }">
+    <LandingContainer pad="clamp(56px, 8vw, 80px) clamp(20px, 5vw, 64px) clamp(28px, 4vw, 40px)">
+      <!-- Lockup + 4 link columns: desktop 1.4fr repeat(4,1fr), mobile stack -->
+      <div class="footer-main-grid">
         <div>
           <BrandNodeLockup :scale="0.75" :fg="C.carbon" :accent="C.signal" />
           <div :style="{ marginTop: '20px', fontFamily: '\'Inter\', sans-serif', fontSize: '14px', color: 'rgba(10,10,10,0.6)', maxWidth: '280px', lineHeight: 1.5 }">{{ copy.footer.tagline }}</div>
@@ -34,20 +35,24 @@ function onLink(e: MouseEvent, href: string) {
             <div>{{ copy.footer.legal.addr }}</div>
           </div>
         </div>
-        <div v-for="(col, i) in copy.footer.cols" :key="i">
-          <div :style="{ fontFamily: '\'JetBrains Mono\', monospace', fontSize: '11px', color: 'rgba(10,10,10,0.45)', letterSpacing: '0.1em', textTransform: 'uppercase', marginBottom: '18px' }">{{ col[0] }}</div>
-          <div :style="{ display: 'flex', flexDirection: 'column', gap: '12px' }">
-            <NuxtLink
-              v-for="(link, j) in col[1]" :key="j" :to="link[1]"
-              :style="{ fontFamily: '\'Inter\', sans-serif', fontSize: '14px', color: 'rgba(10,10,10,0.78)' }"
-              @click="onLink($event, link[1])"
-            >{{ link[0] }}</NuxtLink>
+        <!-- Four link columns reflow: 2 per row on tablet, 1 on small mobile -->
+        <div class="footer-link-columns">
+          <div v-for="(col, i) in copy.footer.cols" :key="i">
+            <div :style="{ fontFamily: '\'JetBrains Mono\', monospace', fontSize: '11px', color: 'rgba(10,10,10,0.45)', letterSpacing: '0.1em', textTransform: 'uppercase', marginBottom: '18px' }">{{ col[0] }}</div>
+            <div :style="{ display: 'flex', flexDirection: 'column', gap: '12px' }">
+              <NuxtLink
+                v-for="(link, j) in col[1]" :key="j" :to="link[1]"
+                :style="{ fontFamily: '\'Inter\', sans-serif', fontSize: '14px', color: 'rgba(10,10,10,0.78)' }"
+                @click="onLink($event, link[1])"
+              >{{ link[0] }}</NuxtLink>
+            </div>
           </div>
         </div>
       </div>
       <div :style="{
         marginTop: '64px', paddingTop: '28px', borderTop: `1px solid ${t.border}`,
         display: 'flex', justifyContent: 'space-between', alignItems: 'center', gap: '24px',
+        flexWrap: 'wrap',
         fontFamily: '\'JetBrains Mono\', monospace', fontSize: '11px', color: 'rgba(10,10,10,0.45)',
       }">
         <div>{{ copy.footer.copyright }}</div>
@@ -62,3 +67,39 @@ function onLink(e: MouseEvent, href: string) {
     </LandingContainer>
   </footer>
 </template>
+
+<style scoped>
+/* Desktop: lockup column (1.4fr) + one cell that spans the four link columns (4fr) */
+.footer-main-grid {
+  display: grid;
+  grid-template-columns: 1.4fr 4fr;
+  gap: 48px;
+}
+
+/* The four link columns always live in their own sub-grid so they can reflow
+   independently: 4 across on desktop, 2 on tablet, 1 on small mobile. */
+.footer-link-columns {
+  display: grid;
+  grid-template-columns: repeat(4, 1fr);
+  gap: 48px;
+}
+
+@media (max-width: 768px) {
+  /* Stack lockup on top, link columns below */
+  .footer-main-grid {
+    grid-template-columns: 1fr;
+  }
+
+  /* Two columns on tablet/large mobile, collapses to 1 on narrow phones */
+  .footer-link-columns {
+    grid-template-columns: repeat(auto-fit, minmax(min(100%, 160px), 1fr));
+    gap: 32px;
+  }
+}
+
+@media (max-width: 400px) {
+  .footer-link-columns {
+    grid-template-columns: 1fr;
+  }
+}
+</style>