feat: redesign landing page with brand system and section blocks

Refresh the homepage around new hero/services/roadmap sections, shared design tokens, and updated brand assets.

Co-authored-by: Cursor <cursoragent@cursor.com>

components/conditional-layout.tsx

@@ -1,27 +1,25 @@
 'use client'
 
-import { usePathname } from 'next/navigation'
 import FooterSection from '@/components/footer'
 import { HeroHeader } from '@/components/header'
-import type { ChangelogRelease } from '@/lib/changelog-types'
+import { PageAtmosphere, PageGrid } from '@/components/page-atmosphere'
 
 export function ConditionalLayout({
   children,
-  changelogReleases,
 }: {
   children: React.ReactNode
-  changelogReleases: ChangelogRelease[]
 }) {
-  const pathname = usePathname()
-  const isLoginPage = pathname === '/login'
-  const showChrome = !isLoginPage
-
   return (
     <>
-      {showChrome && <HeroHeader />}
-      {children}
-      {showChrome && <FooterSection releases={changelogReleases} />}
+      <PageAtmosphere />
+      <div className="page-content relative">
+        <PageGrid />
+        <div className="relative z-[1]">
+          <HeroHeader />
+          {children}
+          <FooterSection />
+        </div>
+      </div>
     </>
   )
 }
-