Make archive hero margin responsive

- No margin below hero on mobile/tablet (< 1200px)
- 2rem margin below hero on desktop (>= 1200px)
- Consistent hero styling across all interior pages

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

wp-content/themes/homeproz/template-parts/property/property-filters.scss

@@ -13,7 +13,11 @@
     background-repeat: no-repeat;
     padding: 3rem 0;
     border-bottom: 1px solid var(--color-border);
-    margin-bottom: 2rem;
+
+    // No margin on mobile/tablet, margin on desktop
+    @media (min-width: 1200px) {
+        margin-bottom: 2rem;
+    }
 
     // When has background image
     &.has-background {