style(website): solid hairlines, Bricolage Grotesque display face, drop TV effects (#1539)

* style(website): solid hairlines, Bricolage Grotesque display face, drop TV effects

First of three landing redesign PRs. This one only touches tokens and
surface treatment so every page (home, blog, /features, /compare,
/download) benefits without any structural change:

- Replace every dashed border with a solid hairline; `.card-dotted`
  becomes `.card-panel` (bg step + hairline, lighter hairline on hover)
  and the section divider is solid `surface-800`.
- Swap the display face from Playfair Display to Bricolage Grotesque
  (DM Sans body and IBM Plex Mono unchanged). The italic accent word
  that every heading repeated is gone; only page-level h1s keep the
  accent, and as colour rather than italic.
- Remove the CRT/TV effects: the `.btn-tv` block and its nine keyframes,
  the scanline overlay on the hero screenshot, the CRT hover overlay and
  teal glow shadows on feature cards, the pulsing mascot, and the unused
  scan/tv-* Tailwind animations.
- The hero download button and the header Download link are now solid
  accent buttons; the self-host link is a plain text link.
- Blog tag chips use neutral surface borders so teal stays reserved for
  actions.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

* style(website): finish the dashed sweep in prose and package rows

The blanket `border-dashed ` removal ate the utility but not the
variant prefix in the blog prose classes, leaving
`prose-pre:prose-pre:...` and `prose-hr:prose-hr:...`; and the
Linux package rows still used `divide-dashed`.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>

apps/website/src/components/FeaturedBlogPost.astro

@@ -19,7 +19,7 @@ const formattedDate = pubDate.toLocaleDateString('en-US', {
 
 <a
   href={`/iptvnator/blog/${slug}/`}
-  class="card-dotted group block overflow-hidden"
+  class="card-panel group block overflow-hidden"
 >
   <div class="grid items-center gap-8 md:grid-cols-2">
     <!-- Thumbnail -->
@@ -55,7 +55,7 @@ const formattedDate = pubDate.toLocaleDateString('en-US', {
       {tags.length > 0 && (
         <div class="mt-2 flex flex-wrap gap-1.5">
           {tags.map((tag) => (
-            <span class="rounded-full border border-dashed border-accent-500/30 px-2 py-0.5 text-xs text-accent-400">
+            <span class="rounded-md border border-surface-800 bg-surface-900/60 px-2 py-0.5 text-xs text-surface-300">
               {tag}
             </span>
           ))}