diff --git a/CHANGELOG.md b/CHANGELOG.md
index 111bf65..50fb0e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Bigger footer built-by mark. `BuiltByMark` defaults the artwork to
+  `h-10 w-auto` (40 px, matching the brand docs footer) via the new
+  `markClass` prop, and `Footer` moves the copyright into the identity
+  column directly below the mark: identity → mark → copyright.
+
 ## [0.0.1-SNAPSHOT.6] - 2026-09-14
 
 ### Added
diff --git a/README.md b/README.md
index 32e66c3..5cdfa71 100644
--- a/README.md
+++ b/README.md
@@ -249,14 +249,14 @@ Every component lives at `@kolektiv/common-docs-chrome/astro/<Name>.astro`:
 | `DocsLayout.astro` | Primary docs shell (sidebar lockup, navbar, footer) |
 | `Navbar.astro` | Sticky navbar with the current page label and controls |
 | `Sidebar.astro` | Categorised nav, optional per-item icons, active highlight |
-| `Footer.astro` | Footer with links and the built-by mark |
+| `Footer.astro` | Footer with links, the identity lockup, the built-by mark and copyright |
 | `ThemePicker.astro` | Site themes grouped by family + curated code themes |
 | `LangToggle.astro` | Language switch (renders only when `langs` is set) |
 | `Switcher.astro` | Generic segmented switcher (renders a `SwitcherConfig`) |
 | `FrameworkPicker.astro` | Framework switch (renders only when `frameworks` is set) |
 | `ScmMenu.astro` | Source-control link (one) or popover menu (many) |
 | `Mark.astro` | Logo/mark image, with the `@kolektiv/brand-core` icon mark as fallback |
-| `BuiltByMark.astro` | Always-on "Built by Kolektiv Computing" mark |
+| `BuiltByMark.astro` | Always-on "Built by Kolektiv Computing" mark; `markClass` sizes the artwork (default `h-10 w-auto`) |
 | `SearchDialog.astro` | Client-side search over the configured nav |
 
 `@kolektiv/common-docs-chrome/astro` also exports `ASTRO_COMPONENTS` (a map of
@@ -530,6 +530,14 @@ Every Kolektiv documentation site must show the "Built by Kolektiv Computing"
 mark. `Footer.astro` **always** renders `BuiltByMark.astro`; do not remove it.
 Override only the destination/label via `config.builtBy`.
 
+The footer identity column reads top-to-bottom as the `Mark` + `config.name`
+lockup, the tagline, the built-by mark (a slightly larger gap below the
+identity), then the copyright line (a small gap above it). `BuiltByMark` takes
+`markClass` for the artwork classes — default `h-10 w-auto`, matching the brand
+docs footer — and `class` for the `<a>` wrapper. The artwork viewBox is
+2761×1415 (about 1.95:1), so size it by height; never use square `size-*`
+utilities.
+
 ## Brand mark
 
 The Kolektiv brand artwork is not vendored here. `Mark.astro` and
diff --git a/src/astro/BuiltByMark.astro b/src/astro/BuiltByMark.astro
index e081c75..d919b32 100644
--- a/src/astro/BuiltByMark.astro
+++ b/src/astro/BuiltByMark.astro
@@ -5,9 +5,10 @@ import type { DocsChromeConfig } from '@kolektiv/common-docs-chrome';
 interface Props {
   config?: DocsChromeConfig;
   class?: string;
+  markClass?: string;
 }
 
-const { config, class: className = '' } = Astro.props;
+const { config, class: className = '', markClass = 'h-10 w-auto' } = Astro.props;
 const builtBy = config?.builtBy ?? {};
 const href = builtBy.href ?? 'https://kolektiv.computer';
 const label = builtBy.label ?? 'Built by Kolektiv Computing';
@@ -16,7 +17,7 @@ const mark = renderBrandMark({
   variant: 'builtByMark',
   title: label,
   color: 'currentColor',
-  className: 'h-5 w-auto',
+  className: markClass,
 });
 ---
 
@@ -29,7 +30,7 @@ const mark = renderBrandMark({
 >
   {
     builtBy.mark ? (
-      <img src={builtBy.mark} alt="" class="size-5 shrink-0" />
+      <img src={builtBy.mark} alt="" class:list={['shrink-0', markClass]} />
     ) : (
       <Fragment set:html={mark} />
     )
diff --git a/src/astro/Footer.astro b/src/astro/Footer.astro
index b0ae651..cd0b447 100644
--- a/src/astro/Footer.astro
+++ b/src/astro/Footer.astro
@@ -26,7 +26,8 @@ const links = config.footer?.links ?? [];
         <span class="font-display text-xl tracking-tight">{config.name}</span>
       </div>
       {config.footer?.tagline && <p class="mt-3">{config.footer.tagline}</p>}
-      <BuiltByMark config={config} class="mt-4" />
+      <BuiltByMark config={config} class="mt-5" />
+      <p class="mt-3 text-xs">{copyright}</p>
     </aside>
 
     {
@@ -46,9 +47,5 @@ const links = config.footer?.links ?? [];
         </nav>
       )
     }
-
-    <div class="w-full border-t border-base-300 pt-4 text-xs sm:w-auto sm:border-0 sm:pt-0">
-      <p>{copyright}</p>
-    </div>
   </div>
 </footer>