[web] Space skip link from disclaimer on interstitial (#33464)

The "continue with free plan" skip link sat directly under the
disclaimer with no separation. Add spacing-08 margin-top to match
the disclaimer's own padding-top above the cards.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
GitOrigin-RevId: ba7334785757a39ca0bdff309ded224e6cb8e3bf

services/web/frontend/stylesheets/pages/plans-2026.scss

@@ -102,6 +102,10 @@
     padding-top: var(--spacing-08);
   }
 
+  .plans-skip-link {
+    margin-top: var(--spacing-08);
+  }
+
   .plans-cards-section {
     background-color: var(--bg-light-primary);
     padding-block-end: var(--spacing-13);