Rework page layout

[zenoachtig]

• Introduce 3 Tailwind variants to keep track of layout: layout-default, layout-wide, layout-full.
• Introduce CONTENT_STYLE classname constant to standardise width logic for UI (handled in CONTAINER_STYLE) and content.
• Rework width constraints of blocks using those variants and constants, and remove individual overrides
• Rework left & right sidebar behaviour, introduce minimal sidebar versions that are fixed to the sides.

[changeset-bot]

🦋 Changeset detected

Latest commit: 42f2076

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
gitbook	Minor

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[github-actions]

Summary of the deployments:

Version	URL	Status
Vercel	https://gitbook-v2-ebj7os54z-gitbook.vercel.app	✅
Cloudflare	https://2753f866-gitbook-open-v2-preview.gitbook.workers.dev	✅

Test content

Site	2v	2c
GitBook	https://gitbook-v2-ebj7os54z-gitbook.vercel.app/url/gitbook.com/docs	https://2753f866-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.com/docs
E2E	https://gitbook-v2-ebj7os54z-gitbook.vercel.app/url/gitbook.gitbook.io/test-gitbook-open	https://2753f866-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.gitbook.io/test-gitbook-open

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Build	Status	Details	Updated (UTC)
customers-v2-cloudflare (Inspect)	⚠️ Changes detected (Review)	116 changed, 4 removed	Feb 24, 2026, 4:16 PM
customers-v2-vercel (Inspect)	⚠️ Changes detected (Review)	118 changed	Feb 24, 2026, 4:09 PM
v2-vercel (Inspect)	⚠️ Changes detected (Review)	443 changed	Feb 24, 2026, 4:14 PM

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Hide embed mobile menu only when TOC is absent

This class change inverts the menu visibility logic for embedded docs: layout-wide:hidden uses the layout-wide variant (defined in tailwind.config.ts as body:has(.layout-wide):has(.page-has-toc)), so the menu is now hidden when a TOC exists and not hidden on page-no-toc pages. On mobile embedded pages, wide layouts with a TOC lose the primary way to open navigation, while pages without a TOC still show a useless menu button.

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