feat(web): Pension Calculator - After 1 September 2025 preview (#16392)

* Add preview for 2025 system

* Add translation string

* Fix typo

* Refactor conditional

---------

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

apps/web/screens/Organization/SocialInsuranceAdministration/PensionCalculatorResults.css.ts

@@ -1,6 +1,6 @@
 import { globalStyle, style } from '@vanilla-extract/css'
 
-import { theme } from '@island.is/island-ui/theme'
+import { theme, themeUtils } from '@island.is/island-ui/theme'
 
 const lineWidth = '2px'
 
@@ -9,6 +9,24 @@ export const line = style({
   height: '86px',
 })
 
+export const longLine = style({
+  borderLeft: `${lineWidth} solid ${theme.color.blue200}`,
+})
+
+export const highlightedItemsContainer = style({
+  display: 'grid',
+  ...themeUtils.responsiveStyle({
+    xs: {
+      gridTemplateColumns: '1fr',
+      gap: theme.spacing[4],
+    },
+    lg: {
+      gridTemplateColumns: '1fr auto 1fr',
+      gap: theme.spacing[7],
+    },
+  }),
+})
+
 export const fullWidth = style({
   width: '100%',
 })