style(index): update text sizes and classes for improved readability on the homepage

app/pages/index/index.vue

@@ -126,10 +126,13 @@ async function logout() {
         </div>
       </UCard>
       <UCard>
-        <p class="text-xs font-medium text-muted">
+        <p class="text-sm font-medium text-muted">
           公开主页
         </p>
-        <p class="mt-1 font-semibold text-highlighted">
+        <p
+          class="mt-1 text-base font-semibold leading-6 tabular-nums"
+          :class="user.publicSlug ? 'text-[#d46a31]' : 'text-muted'"
+        >
           {{ user.publicSlug ? `/@${user.publicSlug}` : '尚未设置' }}
         </p>
         <UButton to="/me/profile" size="xs" variant="link" class="mt-2 px-0">