feat: improve combination search and offline build

src/routes/+layout.svelte

@@ -1,5 +1,6 @@
 <script lang="ts">
   import { page } from '$app/stores';
+  import '$lib/styles/layout-tokens.css';
 </script>
 
 <header class="site-nav">
@@ -17,11 +18,6 @@
 <slot />
 
 <style>
-  :global(:root) {
-    --page-max-width: 1520px;
-    --page-gutter: clamp(40px, 5vw, 96px);
-  }
-
   :global(*) { box-sizing: border-box; }
   :global(body) { margin: 0; background: #101319; color: #e8ebf1; font-family: Pretendard, "Noto Sans KR", sans-serif; }