style(footer): lang-switch word accent + normal weight; unify footer font-size

public/css/main.css

@@ -568,7 +568,7 @@ a:visited:not(.btn):not(.fab):not(.logo):not(.skip-link):hover {
   display: inline-flex;
   align-items: center;
   gap: 0.45rem;
-  font-size: 0.78rem;
+  font-size: inherit;
   line-height: 1;
 }
 
@@ -579,9 +579,9 @@ a:visited:not(.btn):not(.fab):not(.logo):not(.skip-link):hover {
   border: 0;
   background: none;
   font: inherit;
-  font-weight: 600;
+  font-weight: 400;
   letter-spacing: 0.04em;
-  color: var(--text-muted);
+  color: var(--accent);
   text-decoration: none;
   cursor: pointer;
   transition: color 0.15s ease;
@@ -4617,7 +4617,6 @@ a.contact-card--link:focus-visible {
 }
 
 .footer__attr {
-  font-size: 0.75rem;
   opacity: 0.75;
 }