support-frontend POC: Observer Brand label

What are you doing in this PR?

Playing with splitted layouts in the checkout to access the amount of changes needed to white label the checkout page for the observer.

Trello Card

Why are you doing this?

How to test

replace the support subdomain in the url for with observer eg: https://observer.thegulocal.com/uk/checkout?product=TierThree&ratePlan=DomesticMonthly

Screenshots

The Guardian Checkout	Observer Checkout

Oct 17 '25 10:10 maloky

Size Change: +1.21 kB (+0.07%)

Total Size: 1.66 MB

Filename	Size	Change
`./support-frontend/public/compiled-assets/webpack/721.js`	0 B	-36.1 kB (removed)	🏆
`./support-frontend/public/compiled-assets/webpack/916.js`	0 B	-8.9 kB (removed)	🏆
`./support-frontend/public/compiled-assets/webpack/checkout.js`	28.1 kB	+848 B (+3.11%)
`./support-frontend/public/compiled-assets/webpack/583.js`	36.1 kB	+36.1 kB (new file)	🆕
`./support-frontend/public/compiled-assets/webpack/890.js`	9.29 kB	+9.29 kB (new file)	🆕

ℹ️ View Unchanged

Filename	Size	Change
`./support-frontend/public/compiled-assets/javascripts/[countryGroupId]/events/router.js`	105 kB	0 B
`./support-frontend/public/compiled-assets/javascripts/[countryGroupId]/router.js`	129 kB	+9 B (+0.01%)
`./support-frontend/public/compiled-assets/javascripts/ausMomentMap.js`	108 kB	0 B
`./support-frontend/public/compiled-assets/javascripts/contributionsRedirectStyles.js`	20 B	0 B
`./support-frontend/public/compiled-assets/javascripts/downForMaintenancePage.js`	75.4 kB	0 B
`./support-frontend/public/compiled-assets/javascripts/error404Page.js`	75.4 kB	0 B
`./support-frontend/public/compiled-assets/javascripts/error500Page.js`	75.3 kB	0 B
`./support-frontend/public/compiled-assets/javascripts/favicons.js`	618 B	0 B
`./support-frontend/public/compiled-assets/javascripts/paperSubscriptionLandingPage.js`	98.3 kB	0 B
`./support-frontend/public/compiled-assets/javascripts/payPalErrorPage.js`	74.2 kB	0 B
`./support-frontend/public/compiled-assets/javascripts/payPalErrorPageStyles.js`	20 B	0 B
`./support-frontend/public/compiled-assets/javascripts/promotionTerms.js`	81.3 kB	0 B
`./support-frontend/public/compiled-assets/javascripts/subscriptionsLandingPage.js`	105 kB	0 B
`./support-frontend/public/compiled-assets/javascripts/unsupportedBrowserStyles.js`	20 B	0 B
`./support-frontend/public/compiled-assets/javascripts/weeklySubscriptionCheckoutPage.js`	170 kB	-5 B (0%)
`./support-frontend/public/compiled-assets/javascripts/weeklySubscriptionLandingPage.js`	102 kB	0 B
`./support-frontend/public/compiled-assets/webpack/159.js`	13.3 kB	0 B
`./support-frontend/public/compiled-assets/webpack/241.js`	4.25 kB	0 B
`./support-frontend/public/compiled-assets/webpack/356.js`	5.25 kB	0 B
`./support-frontend/public/compiled-assets/webpack/680.js`	4.36 kB	0 B
`./support-frontend/public/compiled-assets/webpack/709.js`	109 kB	0 B
`./support-frontend/public/compiled-assets/webpack/760.js`	5.8 kB	0 B
`./support-frontend/public/compiled-assets/webpack/8.js`	19.4 kB	0 B
`./support-frontend/public/compiled-assets/webpack/801.js`	2.18 kB	0 B
`./support-frontend/public/compiled-assets/webpack/807.js`	30.3 kB	0 B
`./support-frontend/public/compiled-assets/webpack/826.js`	14.6 kB	0 B
`./support-frontend/public/compiled-assets/webpack/862.js`	3.16 kB	0 B
`./support-frontend/public/compiled-assets/webpack/868.js`	7.59 kB	0 B
`./support-frontend/public/compiled-assets/webpack/873.js`	3.33 kB	0 B
`./support-frontend/public/compiled-assets/webpack/966.js`	10.3 kB	0 B
`./support-frontend/public/compiled-assets/webpack/GuardianAdLiteLanding.js`	8.48 kB	0 B
`./support-frontend/public/compiled-assets/webpack/LandingPage.js`	16.1 kB	0 B
`./support-frontend/public/compiled-assets/webpack/oneTimeCheckout.js`	9.3 kB	-4 B (-0.04%)
`./support-frontend/public/compiled-assets/webpack/StudentLandingPageGlobalContainer.js`	4.5 kB	0 B
`./support-frontend/public/compiled-assets/webpack/StudentLandingPageUTSContainer.js`	4.98 kB	0 B
`./support-frontend/public/compiled-assets/webpack/ThankYou.js`	114 kB	-70 B (-0.06%)