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/ui/input.tsx

@@ -8,8 +8,8 @@ function Input({ className, type, ...props }: React.ComponentProps<"input">) {
       type={type}
       data-slot="input"
       className={cn(
-        "file:text-foreground placeholder:text-muted-foreground selection:bg-primary selection:text-primary-foreground dark:bg-input/30 border-input h-9 w-full min-w-0 rounded-md border bg-transparent px-3 py-1 text-base shadow-xs transition-[color,box-shadow] outline-none file:inline-flex file:h-7 file:border-0 file:bg-transparent file:text-sm file:font-medium disabled:pointer-events-none disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
-        "focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px]",
+        "file:text-foreground placeholder:text-muted-foreground selection:bg-primary selection:text-primary-foreground border-input bg-background h-9 w-full min-w-0 rounded-md border px-3 py-1 text-base text-foreground shadow-xs transition-[color,background-color,border-color,box-shadow] duration-200 outline-none file:inline-flex file:h-7 file:border-0 file:bg-transparent file:text-sm file:font-medium disabled:pointer-events-none disabled:cursor-not-allowed disabled:opacity-50 md:text-sm dark:bg-surface/60",
+        "focus-visible:border-primary focus-visible:ring-primary/25 focus-visible:ring-[3px]",
         "aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive",
         className
       )}