diff --git a/.claude/settings.json b/.claude/settings.json
new file mode 100644
index 00000000..c645a051
--- /dev/null
+++ b/.claude/settings.json
@@ -0,0 +1,17 @@
+{
+  "$schema": "https://json.schemastore.org/claude-code-settings.json",
+  "hooks": {
+    "SessionStart": [
+      {
+        "matcher": "startup|resume",
+        "hooks": [
+          {
+            "type": "command",
+            "command": "\"$CLAUDE_PROJECT_DIR\"/scripts/claude-code-setup.sh",
+            "timeout": 600
+          }
+        ]
+      }
+    ]
+  }
+}
diff --git a/.gitignore b/.gitignore
index 09199b05..20eaffd4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -49,7 +49,8 @@ cypress.env.json
 /studio/.sanity
 .env*.local
 
-# Claude Code
-.claude/
+# Claude Code (shared settings are tracked, everything else stays local)
+.claude/*
+!.claude/settings.json
 
 .beads
diff --git a/CLAUDE.md b/CLAUDE.md
new file mode 100644
index 00000000..37968fcd
--- /dev/null
+++ b/CLAUDE.md
@@ -0,0 +1,39 @@
+# CLAUDE.md
+
+Main site for Gi Effektivt / Ge Effektivt / Giv Effektivt — a multi-country (NO/SE/DK) donation platform. Next.js (Pages Router) frontend with Sanity as CMS, Auth0 for the logged-in profile pages, and the [effekt-backend](https://github.com/stiftelsen-effekt/effekt-backend) API for donation data.
+
+## Commands
+
+- `npm install` — install dependencies (Node version: see `.nvmrc`)
+- `npm run dev` — dev server on http://localhost:3000
+- `npm run typecheck` — TypeScript check (`tsc --noEmit`)
+- `npm test` — Jest unit tests
+- `npm run lint` — ESLint
+- `npm run format` — Prettier (also runs on commit via husky/lint-staged)
+
+Environment: copy `.env.example` to `.env.local`. The defaults point at a test Sanity dataset and a local backend; see comments in `.env.example` for the Swedish/Danish alternatives.
+
+## Architecture notes
+
+- **Custom routing**: only files with the `.page.tsx` extension are picked up by the Next.js router. `pages/[[...slug]].page.tsx` parses the slug and renders the correct page type. Page types are regular modules under `pages/` (without `.page.tsx`) that export static paths and props via the `withStaticProps()` helper.
+- **Two layouts**: public pages use `components/main/layout.tsx`; everything under `pages/dashboard` uses the profile layout `components/min-side/layout.tsx` (wrapped in the Auth0 provider). Each page sets its layout via a `.Layout` property on the export.
+- **Content**: fetched from Sanity with GROQ queries (`_queries.ts` and colocated query files). The Sanity studio lives in `studio/` as a separate npm project.
+- **Reusable components** live in `components/`, mostly under `components/main/blocks/` for CMS-driven content blocks.
+
+## Verifying UI changes (Claude Code cloud sessions)
+
+Cloud sessions have `@playwright/test` and Chromium available (installed by `scripts/claude-code-setup.sh`). When a change affects anything user-visible:
+
+1. Start the dev server (`npm run dev`) and wait until the affected page compiles.
+2. Write a small throwaway Playwright script that opens the affected pages against `http://localhost:3000` and saves screenshots (desktop 1440×900 and mobile 390×844 viewports) to `screenshots/` at the repo root. Launch the browser with `launchSandboxPage()` from `scripts/claude-pw-sandbox.js` — it handles the sandbox's HTTPS proxy, its untrusted CA, QUIC, and hosts like `cdn.sanity.io` whose connections Chromium can't complete (without it, Sanity images render broken). Prefer viewport screenshots; if a full-page capture is genuinely needed, clip it to at most ~4000px tall — very tall images fail to upload and are unreadable in PRs anyway.
+3. Commit the screenshots to the branch and embed them in the PR description using raw URLs: `https://raw.githubusercontent.com/stiftelsen-effekt/main-site/<branch>/screenshots/<file>.png`.
+4. Keep screenshots small (PNG, only the affected pages) — reviewers may ask to drop the `screenshots/` commit before merge.
+
+If Playwright or Chromium is missing, the environment's network allowlist probably lacks the Playwright CDN domains (`cdn.playwright.dev`, `playwright.azureedge.net`, `playwright.download.prss.microsoft.com`); say so in the PR instead of skipping verification silently.
+
+## Conventions
+
+- Prettier is the source of truth for formatting; don't hand-format.
+- A fresh `npm install` can leave incidental `package-lock.json` churn (peer-dependency resolution entries). Don't commit lockfile changes unless you intentionally changed dependencies.
+- Styles are CSS/SCSS modules colocated with components.
+- Run `npm run typecheck` and `npm test` before considering a change done.
diff --git a/scripts/claude-code-setup.sh b/scripts/claude-code-setup.sh
new file mode 100755
index 00000000..1dd1032f
--- /dev/null
+++ b/scripts/claude-code-setup.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+# Prepares the cloud sandbox for Claude Code on the web (claude.ai/code).
+# Runs via the SessionStart hook in .claude/settings.json; no-ops locally.
+
+if [ "$CLAUDE_CODE_REMOTE" != "true" ]; then
+  exit 0
+fi
+
+cd "$CLAUDE_PROJECT_DIR" || exit 0
+
+if [ ! -f .env.local ]; then
+  cp .env.example .env.local
+fi
+
+# Skip the Cypress binary download: download.cypress.io is not on the sandbox
+# network allowlist, and the failing/hanging download otherwise aborts npm
+# install (leaving node_modules empty) or burns the whole hook timeout.
+# Cypress e2e runs are not part of the cloud workflow anyway.
+export CYPRESS_INSTALL_BINARY=0
+
+if [ ! -d node_modules ]; then
+  npm install --no-audit --no-fund || true
+fi
+
+# Playwright for visual verification of UI changes (not a project dependency;
+# browser binaries are cached in the cloud environment). Requires the Playwright
+# CDN domains on the environment's network allowlist — see CLAUDE.md.
+if [ ! -d node_modules/@playwright/test ]; then
+  npm install --no-save --no-audit --no-fund @playwright/test || true
+fi
+npx playwright install --with-deps chromium || npx playwright install chromium || true
+
+exit 0
diff --git a/scripts/claude-pw-sandbox.js b/scripts/claude-pw-sandbox.js
new file mode 100644
index 00000000..a45217f7
--- /dev/null
+++ b/scripts/claude-pw-sandbox.js
@@ -0,0 +1,85 @@
+/**
+ * Playwright bootstrap for Claude Code cloud sandbox sessions.
+ *
+ * The sandbox routes outbound HTTPS through a proxy that Chromium neither
+ * picks up from the environment nor trusts (custom CA), and it advertises
+ * HTTP/3 which doesn't tunnel through the proxy. On top of that, Chromium
+ * connections to some hosts (e.g. cdn.sanity.io) are reset even via the
+ * proxy, while curl succeeds — requests to those hosts are fulfilled
+ * out-of-band with curl so images render in screenshots.
+ *
+ * Harmless locally: without proxy env vars it launches a plain browser.
+ *
+ * Usage (from a throwaway verification script at the repo root):
+ *   const { chromium } = require("@playwright/test");
+ *   const { launchSandboxPage } = require("./scripts/claude-pw-sandbox");
+ *   const { browser, page } = await launchSandboxPage(chromium, {
+ *     viewport: { width: 1440, height: 900 },
+ *   });
+ *   await page.goto("http://localhost:3000");
+ *   await page.screenshot({ path: "screenshots/home-desktop.png" });
+ *   await browser.close();
+ */
+const { execFileSync } = require("child_process");
+
+// Hosts that reset direct/proxied Chromium connections in the sandbox.
+// Keep this to asset CDNs — the fallback only handles GET requests.
+const CURL_FALLBACK_HOSTS = [/^cdn\.sanity\.io$/];
+
+const TYPE_BY_EXT = {
+  svg: "image/svg+xml",
+  png: "image/png",
+  jpg: "image/jpeg",
+  jpeg: "image/jpeg",
+  webp: "image/webp",
+  gif: "image/gif",
+  avif: "image/avif",
+  ico: "image/x-icon",
+  json: "application/json",
+};
+
+function contentTypeFor(url) {
+  const ext = new URL(url).pathname.split(".").pop().toLowerCase();
+  return TYPE_BY_EXT[ext] || "application/octet-stream";
+}
+
+async function launchSandboxPage(chromium, { viewport } = {}) {
+  const proxy =
+    process.env.HTTPS_PROXY ||
+    process.env.https_proxy ||
+    process.env.HTTP_PROXY ||
+    process.env.http_proxy;
+
+  const browser = await chromium.launch({
+    proxy: proxy ? { server: proxy } : undefined,
+    args: ["--disable-quic"],
+  });
+  const context = await browser.newContext({
+    ignoreHTTPSErrors: true,
+    viewport,
+  });
+
+  await context.route(
+    (url) => CURL_FALLBACK_HOSTS.some((re) => re.test(url.hostname)),
+    async (route) => {
+      if (route.request().method() !== "GET") {
+        await route.continue().catch(() => {});
+        return;
+      }
+      const url = route.request().url();
+      try {
+        const body = execFileSync("curl", ["-sSfL", "--max-time", "20", url], {
+          maxBuffer: 50 * 1024 * 1024,
+        });
+        await route.fulfill({ body, contentType: contentTypeFor(url) });
+      } catch {
+        await route.continue().catch(() => {});
+      }
+    },
+  );
+
+  const page = await context.newPage();
+  return { browser, context, page };
+}
+
+module.exports = { launchSandboxPage };