diff --git a/CHANGELOG.md b/CHANGELOG.md
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+# Changelog
+
+All notable changes to this project are documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [1.0.0] — 2026-07-06
+
+First tagged release. Landing page + CV live at https://bchanot.fr, served by
+a hardened nginx container behind the host reverse proxy.
+
+### Security
+- Container runs unprivileged: `nginxinc/nginx-unprivileged` digest-pinned,
+  uid 101, internal port 8080; base at 1.30-alpine (nginx/1.30.3) covering
+  CVE-2026-42945. Compose hardening: `read_only`, `cap_drop: ALL`,
+  `no-new-privileges`, loopback-bound port.
+- Security headers (CSP, X-Content-Type-Options, X-Frame-Options,
+  Referrer-Policy, Permissions-Policy) re-included in every nginx location
+  (add_header inheritance trap closed); `server_tokens off`; CSP `script-src`
+  pinned to the inline script's sha256 hash; dotfile requests 404 ahead of
+  the caching locations.
+
+### Changed
+- Palette strictly tokenized: 6 brand hexes + documented functional neutrals
+  + white-on-dark family; off-palette colors mapped to tokens.
+- CSS deduplicated via grouped selectors (landing cards, CV headers / date
+  chips / roles / tags); dead rules and no-op declarations removed.
+- Unused Google Fonts faces trimmed from both pages (CV proven
+  render-identical; landing verified at 375 px and 1440 px).
+- CV date chips in French with en-dashes; language/interest tags as true
+  pills; profile geography aligned landing ↔ CV (Nantes relocation).
+- `prefers-reduced-motion` disables transitions as well as animations;
+  decorative CTA arrows removed from the accessibility tree.
+- PDF served uncompressed (already flate-compressed); single container
+  healthcheck (image `HEALTHCHECK`, inherited by compose).
+
+### Added
+- `version.txt` and this CHANGELOG — the release lineage starts here.
diff --git a/version.txt b/version.txt
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+1.0.0