fix(dept): numéros urgence en 2×3 (grid-cols-2 mobile, sm:grid-cols-3)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/pages/departement/[code].astro

@@ -324,7 +324,7 @@ const topPhen = topAlert ? PHENOMENA[topAlert.phenomenonId] : null;
         {topAlert && EMERGENCY_NUMBERS.length > 0 && (
           <div class="ic-card-soft" style="margin-bottom: 28px; padding: 18px;">
             <div class="kicker" style="margin-bottom: 12px;">Numéros d'urgence</div>
-            <div class="grid gap-3" style="grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));">
+            <div class="grid gap-3 grid-cols-2 sm:grid-cols-3">
               {EMERGENCY_NUMBERS.map((n) => (
                 <div style="display: flex; align-items: baseline; gap: 8px;">
                   <a href={`tel:${n.num}`} style="font-family: var(--font-mono); font-weight: 700; font-size: 1.15rem; color: var(--v-rouge); text-decoration: none; border-bottom: none;">