Assisted-by: Claude Opus 4.6 via pi

diff --git a/lib/ketchup/snapshots.rb b/lib/ketchup/snapshots.rb
index 0dded06..ecfa0d2 100644
--- a/lib/ketchup/snapshots.rb
+++ b/lib/ketchup/snapshots.rb
@@ -98,7 +98,8 @@ module Ketchup
 
         @browser = Ferrum::Browser.new(
           headless: true,
-          window_size: VIEWPORTS.fetch("desktop")
+          window_size: VIEWPORTS.fetch("desktop"),
+          browser_options: { "force-device-scale-factor" => 2 }
         )
 
         @server.call(@browser) do |url|