style(homepage): slightly loosen main-to-footer spacing

Add modest bottom padding on the fixed homepage shell so short post
streams do not sit flush against the footer, without large zibll-unlike gaps.

assets/css/frontend/homepage-fixed/base-1.css

@@ -47,6 +47,8 @@
   background: transparent;
   -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;
+  /* Slightly looser than stock zibll short pages: air between stream and footer */
+  padding-bottom: 28px;
 }
 
 .aksrt-homepage a[href] {
@@ -91,7 +93,23 @@
 
 .aksrt-homepage__shell.content-shell {
   padding-top: 0;
-  padding-bottom: 36px;
+  /* 36px + a bit more breathing room before footer */
+  padding-bottom: 56px;
+}
+
+/* Bottom fluid zone (if any) keeps a little gap above footer */
+.aksrt-homepage__fluid-zone--bottom {
+  margin-bottom: 12px;
+}
+
+@media (max-width: 767px) {
+  .aksrt-homepage {
+    padding-bottom: 20px;
+  }
+
+  .aksrt-homepage__shell.content-shell {
+    padding-bottom: 40px;
+  }
 }
 
 .aksrt-homepage__content-layout {