diff --git a/docs/css-refactor-plan.md b/docs/css-refactor-plan.md
index 5606ee1..ada2b2b 100644
--- a/docs/css-refactor-plan.md
+++ b/docs/css-refactor-plan.md
@@ -1,5 +1,7 @@
 # CSS Layer Refactor Plan
 
+> **Superseded by:** `openspec/changes/css-refactor/` — this document is kept as historical reference. Agents should read the OpenSpec change tasks, not this file.
+
 **Project:** ASW — Agentic Semantic Web
 **Goal:** Restructure CSS layers to clean architecture, alias all Open Props primitives through `01-tokens.css`, redistribute misplaced content, remove unused values.
 **Method:** One atomic step per agent session. Build check after every step. No step touches more than two files.
diff --git a/openspec/changes/css-refactor/proposal.md b/openspec/changes/css-refactor/proposal.md
new file mode 100644
index 0000000..4434b83
--- /dev/null
+++ b/openspec/changes/css-refactor/proposal.md
@@ -0,0 +1,60 @@
+# Proposal: CSS Layer Refactor
+
+## Intent
+
+Restructure CSS layers to clean architecture: alias all Open Props primitives through `01-tokens.css`, split the monolithic `03-components.css` into purpose-specific files, redistribute misplaced content, and rename files to match their actual responsibilities.
+
+**Goal: each CSS file has a single clear purpose, and no file references Open Props primitives directly.**
+
+This plan was originally documented in `docs/css-refactor-plan.md` and is imported here as an OpenSpec change for tracking and execution.
+
+## Scope
+
+### In Scope
+- Add missing semantic aliases to token file (~10 new aliases)
+- Extract editorial rules out of token file into their proper layers
+- Rename `01-asw.css` → `01-tokens.css` (pure tokens, no rules)
+- Fix all Open Props primitive leaks across all layers
+- Split `03-components.css` into: `03-landmarks.css`, `04-forms.css`, slimmed `05-components.css`, `06-navigation.css`
+- Rename all files to final numbering scheme
+- Merge `08a-essay.css` into layout layer
+- Audit and remove unused tokens
+
+### Out of Scope
+- New CSS features or components
+- Layout changes
+- Content changes
+- Repo restructure (separate change, happens first)
+
+### Current → Target Layer Map
+
+```
+CURRENT                          TARGET
+═══════                          ══════
+00-reset.css                     00-reset.css (unchanged)
+01-asw.css                  ──▶  01-tokens.css (pure :root, no rules)
+02-semantic.css             ──▶  02-typography.css
+03-components.css           ──▶  03-landmarks.css (nav, article, footer, hgroup)
+                            ──▶  04-forms.css (inputs, buttons, selects)
+                            ──▶  05-components.css (dialog, accordion, breadcrumb)
+                            ──▶  06-navigation.css (sidebar, TOC)
+04-data-attrs.css           ──▶  07-data-attrs.css
+05-utilities.css            ──▶  08-utilities.css
+06-charts.css               ──▶  09-charts.css
+07-chroma.css               ──▶  10-chroma.css
+08-layout.css + 08a-essay   ──▶  11-layout.css (merged)
+09-landing.css              ──▶  12-landing.css
+```
+
+## Approach
+
+One atomic step per session. Build check after every step. No step touches more than two files. Full plan in `docs/css-refactor-plan.md`.
+
+## Prerequisites
+
+- **Depends on:** `repo-restructure` (files must be in `src/layers/` first)
+
+## Risks
+
+- **Visual regression** — mitigated by build + visual check after each step
+- **Specificity changes** — layer reordering could affect cascade. Mitigated by keeping relative order.
diff --git a/openspec/changes/css-refactor/tasks.md b/openspec/changes/css-refactor/tasks.md
new file mode 100644
index 0000000..6ce3e63
--- /dev/null
+++ b/openspec/changes/css-refactor/tasks.md
@@ -0,0 +1,94 @@
+# Tasks: CSS Layer Refactor
+
+Imported from `docs/css-refactor-plan.md`. Each step = one agent session.
+
+**Prerequisite:** `repo-restructure` change must be complete. All files in `src/layers/`.
+
+---
+
+## Task 1 — Add missing aliases to token file
+**Files:** `src/layers/01-asw.css` (pre-rename)
+**Action:** Add semantic aliases for `--font-weight-N`, `--shadow-N`, `--border-size-2`, `--size-px-12`, and `--space-5a` gap.
+**Acceptance:** Build passes. No visual change. New aliases exist in `:root`.
+
+---
+
+## Task 2 — Extract editorial rules from token file
+**Files:** `src/layers/01-asw.css`, `src/layers/08-layout.css`
+**Action:** Move `body > nav` padding rule to `03-components.css`. Move `[data-layout="docs"] > article` max-width to `08-layout.css`. Token file becomes pure `:root` only.
+**Acceptance:** Build passes. Nav centering and docs prose width unchanged.
+
+---
+
+## Task 3 — Rename `01-asw.css` → `01-tokens.css`
+**Files:** `src/layers/01-asw.css`, `src/main.css`
+**Action:** Rename file, update `@import`.
+**Acceptance:** Build passes.
+
+---
+
+## Task 4 — Fix primitive leaks in `03-components.css`
+**Files:** `src/layers/03-components.css`
+**Action:** Replace all `--font-weight-N`, `--size-N`, `--shadow-N`, `--border-size-N` with semantic aliases.
+**Acceptance:** Build passes. No visual change.
+
+---
+
+## Task 5 — Fix primitive leaks in `06-charts.css`
+**Files:** `src/layers/06-charts.css`
+**Action:** Replace `--size-1/2/3` with `--space-1/2/4`.
+**Acceptance:** Build passes. Charts render unchanged.
+
+---
+
+## Task 6 — Fix primitive leaks in remaining files
+**Files:** `src/layers/02-semantic.css`, `src/layers/07-chroma.css`, `src/layers/08-layout.css`, `src/layers/09-landing.css`
+**Action:** Replace all remaining `--font-weight-N`, `--size-N` primitives with semantic aliases.
+**Acceptance:** Build passes after each file.
+
+---
+
+## Task 7 — Create `03-landmarks.css`, extract from `03-components.css`
+**Files:** `src/layers/03-components.css`, new `src/layers/03-landmarks.css`, `src/main.css`
+**Action:** Move landmark sections (nav, article, dt/dd, section, hgroup, footer) to new file.
+**Acceptance:** Build passes. All landmark styles render unchanged.
+
+---
+
+## Task 8 — Create `04-forms.css`, extract from `03-components.css`
+**Files:** `src/layers/03-components.css`, new `src/layers/04-forms.css`, `src/main.css`
+**Action:** Move buttons and form elements to new file.
+**Acceptance:** Build passes.
+
+---
+
+## Task 9 — Create `06-navigation.css`, extract from `03-components.css`
+**Files:** `src/layers/03-components.css`, new `src/layers/06-navigation.css`, `src/main.css`
+**Action:** Move sidebar nav and TOC sections to new file.
+**Acceptance:** Build passes. Sidebar and TOC render unchanged.
+
+---
+
+## Task 10 — Rename files to final numbering + merge essay
+**Files:** All layer files, `src/main.css`
+**Action:** Rename to final numbers (see proposal layer map). Merge `08a-essay.css` into `11-layout.css`. Update all `@import` statements.
+**Acceptance:** Build passes.
+
+---
+
+## Task 11 — Audit unused tokens
+**Files:** `src/layers/01-tokens.css`
+**Action:** Build CSS, grep for token usage, diff defined vs used. Remove confirmed unused.
+**Acceptance:** Build passes. Spot-check 3-4 pages visually.
+
+---
+
+## Task 12 — Fix HTML template issues from sidebar/TOC refactor
+**Files:** `site/layouts/docs/single.html`, `site/layouts/notes/single.html` (post-restructure paths)
+**Action:** From `docs/css-html-cleanup-todo.md`:
+- Remove redundant `nav[data-nav="sidebar"] ul li { margin: 0; padding: 0 }` resets (if not already caught in Tasks 7/9)
+- Remove redundant `aside[data-toc] nav ul li { margin: 0; padding: 0 }` resets (if not already caught in Tasks 7/9)
+- Replace `<small>← Previous</small>` / `<small>Next →</small>` with appropriate element in prev/next footer
+- Remove `role="main"` from `<article>` in docs single layout
+- Move hardcoded `"On this page"` string to Hugo i18n or site param
+**Acceptance:** Build passes. Prev/next links render correctly. TOC heading uses i18n string. No `role="main"` on `<article>`.
diff --git a/openspec/changes/legacy-import/proposal.md b/openspec/changes/legacy-import/proposal.md
new file mode 100644
index 0000000..d18070a
--- /dev/null
+++ b/openspec/changes/legacy-import/proposal.md
@@ -0,0 +1,78 @@
+# Proposal: Legacy Import
+
+## Intent
+
+Import valuable material from `agentic-semantic-web/` (legacy repo) into the restructured `asw/` repo. The legacy repo was the standalone single-file version of ASW. It contains packs, templates, examples, lab experiments, error pages, and documentation that belong in the current repo.
+
+**Goal: everything worth keeping lives in `asw/`. Legacy repo is archived.**
+
+## Scope
+
+### Triage Categories
+
+Material from `agentic-semantic-web/` falls into:
+
+**Import as-is:**
+- `packs/apache/` → `packs/apache/`
+- `packs/caddy/` → `packs/caddy/`
+- `packs/flask/` → `packs/flask/`
+- `packs/nginx/` → `packs/nginx/`
+- `packs/pandoc/` → `packs/pandoc/`
+- `packs/python/` → `packs/python/`
+- `packs/hugo/` → `packs/hugo/` (base Hugo pack)
+- `errors/` → `packs/` (distributed to relevant packs, or shared errors dir)
+- `LICENSE`
+
+**Import and adapt:**
+- `examples/` → `examples/` (update CSS paths to `dist/asw.css`)
+- `templates/` → review, merge into packs or docs
+- `llms.txt` → `docs/llms.txt` (update for current state)
+- `content/vocabulary.md` → `docs/vocabulary.md`
+- `content/philosophy.md` → `docs/` (may already exist)
+- `content/agent-directive.md` → `docs/` or merge into existing docs
+- `themes/` → `src/themes/` or `examples/themes/` (needs decision)
+
+**Import as reference/lineage:**
+- `openspec/changes/pico-absorption/` → content for `docs/lineage.md`
+- `content/architecture.md`, `content/design-tokens.md` → inform specs, don't import verbatim
+- `MISSION_REPORT.md`, `SIZE_AUDIT.md` → historical, extract lessons into lineage
+
+**Do not import:**
+- `dist/agentic.css` — superseded by `dist/asw.css`
+- `agentic.css` (root) — old entry point
+- `src/layers/` — superseded by current `src/layers/`
+- `build.sh`, `migrate-tokens.sh` — legacy build tools
+- `web-fonts.css` — evaluate if still needed
+- `lib/open-props/` — replaced by `vendor/open-props/`
+- `lab/hugo-demo/` — superseded by `site/`
+- `.pi/` — agent config, not framework material
+- `index.html` — legacy landing page
+
+**Needs triage decision:**
+- `lab/` (non-Hugo) — some experiments may be worth keeping in `src/lab/`
+- `docs/missions/` — historical mission reports, lineage value?
+- `content/charts-css-exploration.md` — inform charts spec?
+- `content/architecture-research.md` — inform design decisions?
+
+### Out of Scope
+- Modifying imported CSS (that's the css-refactor change)
+- Creating new content
+- Archiving the legacy repo (separate operational task)
+
+## Prerequisites
+
+- **Depends on:** `repo-restructure` (directories must exist first)
+
+## Approach
+
+1. Triage: review each directory/file, confirm category
+2. Import packs (bulk, low risk)
+3. Import examples (need path updates)
+4. Import docs (need review/merge)
+5. Write `docs/lineage.md` from pico-absorption and historical material
+6. Final audit: nothing valuable left behind
+
+## Risks
+
+- **Stale content** — legacy material references `agentic.css`, old paths, old URLs. All imported material needs path/name updates.
+- **Duplication** — some legacy content already exists in ASW in evolved form. Need careful merge, not overwrite.
diff --git a/openspec/changes/repo-restructure/design.md b/openspec/changes/repo-restructure/design.md
new file mode 100644
index 0000000..f6520ec
--- /dev/null
+++ b/openspec/changes/repo-restructure/design.md
@@ -0,0 +1,115 @@
+# Design: Repository Restructure
+
+## Current → Target Mapping
+
+```
+CURRENT                              TARGET
+═══════                              ══════
+assets/css/layers/*.css      ──▶     src/layers/*.css
+assets/css/main.css          ──▶     src/main.css
+(new)                        ──▶     src/lab/
+static/asw.css               ──▶     dist/asw.css
+(new)                        ──▶     dist/asw.min.css
+static/vendor/               ──▶     vendor/open-props/
+(new)                        ──▶     vendor/open-props/VERSION
+(new)                        ──▶     vendor/README.md
+content/                     ──▶     site/content/
+layouts/                     ──▶     site/layouts/
+archetypes/                  ──▶     site/archetypes/
+hugo.toml                    ──▶     site/hugo.toml
+static/ (non-vendor)         ──▶     site/static/
+docs/                        ──▶     docs/  (stays, add new docs)
+(new)                        ──▶     examples/
+postcss.config.js            ──▶     postcss.config.js (updated paths)
+package.json                 ──▶     package.json (stays at root)
+node_modules/                ──▶     node_modules/ (stays at root)
+```
+
+## Key Design Decisions
+
+### Hugo assets resolution
+
+Hugo looks for `assets/` relative to the site root. With Hugo files in `site/`, we need either:
+- **Option A:** `site/assets/css/main.css` that imports from `../../src/layers/` — fragile
+- **Option B:** Hugo module mount maps `src/` into Hugo's asset pipeline — clean
+
+**Decision: Option B.** Hugo config in `site/hugo.toml`:
+```toml
+[[module.mounts]]
+  source = "static"
+  target = "static"
+
+[[module.mounts]]
+  source = "../src"
+  target = "assets/css"
+
+[[module.mounts]]
+  source = "../docs"
+  target = "content/docs"
+
+[[module.mounts]]
+  source = "../vendor/open-props"
+  target = "assets/css/open-props"
+```
+
+This way Hugo sees `src/layers/` as `assets/css/layers/` and `src/main.css` as `assets/css/main.css` — zero path changes in the CSS files themselves.
+
+### Vendor directory
+
+```
+vendor/
+  open-props/
+    open-props.min.css
+    media.min.css
+    VERSION                 ← "1.7.x (npm open-props@1.7.x, vendored 2025-xx-xx)"
+  README.md                 ← "How to update: npm update open-props && cp ..."
+```
+
+`npm install` still works for the build toolchain. `vendor/` is the inspectable, committed copy with version tracking. The build reads from `node_modules/` (PostCSS import resolution), but agents and humans can read `vendor/` to understand what Open Props provides.
+
+### dist/ generation
+
+`dist/asw.css` is built by PostCSS from `src/main.css`:
+```bash
+npx postcss src/main.css -o dist/asw.css
+npx postcss src/main.css -o dist/asw.min.css  # with cssnano
+```
+
+Committed to repo. Consumers grab `dist/asw.css` without needing npm/PostCSS.
+
+### examples/ structure
+
+```
+examples/
+  components/       ← buttons, forms, callouts, dialogs
+  layout/           ← docs layout, grid, prose, timeline
+  charts/           ← chart showcases
+  vault/            ← vault note rendering examples
+```
+
+Each HTML file is standalone: `<link rel="stylesheet" href="../dist/asw.css">`. Open in browser, no build step.
+
+### dev workflow
+
+`dev.sh` (or its successor) runs from project root:
+1. Watches `src/layers/` for changes
+2. Processes individual layers → somewhere Hugo can serve them (for devtools visibility)
+3. Runs `hugo server` with working directory `site/`
+
+The key change: Hugo is invoked as `hugo server --source site/` or from within `site/`.
+
+## What Stays at Root
+
+```
+asw/
+  package.json              ← build tooling (PostCSS, Open Props)
+  postcss.config.js         ← production PostCSS config
+  postcss.dev.config.js     ← dev PostCSS config
+  node_modules/             ← npm packages (gitignored)
+  .gitignore
+  README.md
+  LICENSE
+  openspec/
+```
+
+Build tooling stays at root because it serves both `dist/` (framework build) and `site/` (dev server). It's a project-level concern, not framework or site.
diff --git a/openspec/changes/repo-restructure/proposal.md b/openspec/changes/repo-restructure/proposal.md
new file mode 100644
index 0000000..f907cc4
--- /dev/null
+++ b/openspec/changes/repo-restructure/proposal.md
@@ -0,0 +1,42 @@
+# Proposal: Repository Restructure
+
+## Intent
+
+The ASW repo currently has a flat Hugo-centric layout where framework source, website content, and build tooling are interleaved. This restructure separates the framework (`src/`), its documentation (`docs/`), its engine integrations (`packs/`), its built output (`dist/`), its dependencies (`vendor/`), and its website (`site/`) into clearly bounded directories.
+
+**Goal: anyone landing on this repo immediately understands what ASW is and where things live.**
+
+## Scope
+
+### In Scope
+- Move `assets/css/layers/` → `src/layers/`
+- Move `assets/css/main.css` → `src/main.css`
+- Create `dist/` at root for built output (`asw.css`, `asw.min.css`)
+- Create `vendor/open-props/` with vendored copies + VERSION file
+- Move Hugo files (`content/`, `layouts/`, `hugo.toml`, `archetypes/`) → `site/`
+- Configure Hugo module mount: `docs/` → `site/content/docs/`
+- Restructure `docs/` as engine-agnostic markdown (already mostly there)
+- Create `src/lab/` for experiments
+- Create `examples/` at root for static HTML showcases
+- Update build paths in `postcss.config.js` and `package.json`
+
+### Out of Scope
+- CSS refactor (separate change, works on `src/layers/` after this)
+- Legacy repo import (separate change, lands material after this)
+- Content writing or new docs
+- New pack creation
+
+## Approach
+
+Incremental moves with build verification after each step. The site must remain buildable and deployable throughout.
+
+## Risks
+
+- **Hugo path breakage** — Hugo has opinions about where `assets/` lives. Module mounts should handle this but need testing.
+- **Deploy script breakage** — `deploy.sh` hardcodes paths. Will need updating (or removal if temporary).
+- **Symlink/mount complexity** — `docs/` → `site/content/docs/` via Hugo mount is clean but adds config complexity.
+
+## Files Touched
+
+Primary: `assets/css/`, `content/`, `layouts/`, `hugo.toml`, `postcss.config.js`, `package.json`
+Created: `src/`, `dist/`, `vendor/`, `site/`, `examples/`, `src/lab/`
diff --git a/openspec/changes/repo-restructure/tasks.md b/openspec/changes/repo-restructure/tasks.md
new file mode 100644
index 0000000..bb6282e
--- /dev/null
+++ b/openspec/changes/repo-restructure/tasks.md
@@ -0,0 +1,115 @@
+# Tasks: Repository Restructure
+
+## Task 1 — Create directory skeleton
+**Files:** (new directories only)
+**Action:**
+- Create `src/`, `src/layers/`, `src/lab/`
+- Create `dist/`
+- Create `vendor/open-props/`
+- Create `site/`
+- Create `examples/`
+**Acceptance:** Directories exist. No files moved yet. Build still passes from current layout.
+
+---
+
+## Task 2 — Move CSS source to src/
+**Files:** `assets/css/layers/*.css` → `src/layers/`, `assets/css/main.css` → `src/main.css`
+**Action:**
+- `git mv assets/css/layers/ src/layers/`
+- `git mv assets/css/main.css src/main.css`
+- Update `@import` paths in `src/main.css` if needed (should be relative, likely unchanged)
+**Acceptance:** `src/layers/` contains all 11 CSS files. `src/main.css` imports them. `assets/css/` is gone.
+**Note:** Site will be temporarily broken until Hugo mounts are configured (Task 5).
+
+---
+
+## Task 3 — Set up vendor/
+**Files:** `vendor/open-props/`, `vendor/README.md`
+**Action:**
+- Copy `node_modules/open-props/open-props.min.css` → `vendor/open-props/`
+- Copy `node_modules/open-props/media.min.css` → `vendor/open-props/`
+- Create `vendor/open-props/VERSION` with package version and date
+- Create `vendor/README.md` explaining what's vendored and how to update
+- Remove `static/vendor/` (old location)
+**Acceptance:** `vendor/open-props/` contains the two CSS files + VERSION. `static/vendor/` is gone.
+
+---
+
+## Task 4 — Move Hugo files to site/
+**Files:** `content/`, `layouts/`, `archetypes/`, `hugo.toml`, `hugo_stats.json`
+**Action:**
+- `git mv content/ site/content/`
+- `git mv layouts/ site/layouts/`
+- `git mv archetypes/ site/archetypes/`
+- `git mv hugo.toml site/hugo.toml`
+- `git mv hugo_stats.json site/hugo_stats.json`
+- Move site-specific static files: `static/palette-test.html` → `site/static/`
+- Move `static/asw.css` → `dist/asw.css` (this is the built output)
+**Acceptance:** All Hugo content/layout/config files are in `site/`. Root has no Hugo files.
+
+---
+
+## Task 5 — Configure Hugo module mounts
+**Files:** `site/hugo.toml`
+**Action:** Add module mounts:
+- `../src` → `assets/css` (framework CSS in Hugo's asset pipeline)
+- `../docs` → `content/docs` (framework docs as site content)
+- `../vendor/open-props` → `assets/css/open-props` (Open Props in asset pipeline)
+- `static` → `static` (site's own static files)
+**Acceptance:** `hugo server --source site/` builds successfully. All pages render. CSS loads correctly.
+
+---
+
+## Task 6 — Build dist/asw.css from new paths
+**Files:** `postcss.config.js`, `package.json`
+**Action:**
+- Update PostCSS config if paths changed
+- Run: `npx postcss src/main.css -o dist/asw.css`
+- Run: `npx postcss src/main.css -o dist/asw.min.css`
+- Verify output matches previous `static/asw.css`
+- Add npm scripts to `package.json`: `"build": "postcss src/main.css -o dist/asw.css"`
+**Acceptance:** `dist/asw.css` exists and is equivalent to the previous build. `npm run build` works.
+
+---
+
+## Task 7 — Restructure docs/
+**Files:** `docs/`
+**Action:**
+- Existing docs stay: `context.md`, `css-refactor-plan.md`, `css-html-cleanup-todo.md`, `frontmatter.md`, `template-h1-title.md`
+- Verify Hugo mount serves them at `content/docs/`
+- Add `docs/llms.txt` (move from legacy or create)
+- Add `docs/lineage.md` placeholder (Pico absorption story, Open Props relationship)
+**Acceptance:** Framework docs are all in `docs/`. Hugo renders them as site pages via mount.
+
+---
+
+## Task 8 — Create examples/ from site content
+**Files:** `examples/`
+**Action:**
+- Identify existing pages that are pure component/layout demos
+- Create standalone HTML versions in `examples/` that load `dist/asw.css`
+- Organize into `examples/components/`, `examples/layout/`, `examples/charts/`, `examples/vault/`
+**Acceptance:** At least 3 example files exist, each standalone and openable in a browser.
+
+---
+
+## Task 9 — Update .gitignore and clean up
+**Files:** `.gitignore`, root directory
+**Action:**
+- Update `.gitignore` for new paths
+- Remove empty `assets/` directory if still present
+- Remove `static/css/layers/` (dev-mode output, will be regenerated)
+- Verify no orphaned files remain in old locations
+**Acceptance:** `git status` is clean. No files in old locations. `.gitignore` covers `node_modules/`, `site/public/`, `site/resources/`.
+
+---
+
+## Task 10 — Verify full build cycle
+**Files:** (none modified, verification only)
+**Action:**
+- `npm run build` → `dist/asw.css` generated
+- `hugo --source site/` → `site/public/` generated
+- Spot-check 3-4 pages visually
+- Verify `docs/` content appears in site
+- Verify CSS loads and renders correctly
+**Acceptance:** Full build passes. Site looks identical to pre-restructure. dist/ output is valid.
diff --git a/openspec/config.yaml b/openspec/config.yaml
new file mode 100644
index 0000000..f3722c8
--- /dev/null
+++ b/openspec/config.yaml
@@ -0,0 +1,48 @@
+schema: spec-driven
+
+context: |
+  Project: ASW — Agentic Semantic Web
+  Purpose: A CSS framework built for agents, not humans. Semantic HTML + data-* attributes.
+
+  Core idea: LLMs produce semantic HTML naturally. ASW makes that HTML look correct
+  without the agent touching CSS. No classes, no inline styles, no presentation vocabulary.
+
+  Stack: Pure CSS framework. PostCSS build (postcss-import, postcss-custom-media, cssnano).
+  Foundation: Open Props provides primitive token scales; ASW aliases them to semantic names.
+
+  Engine-agnostic: ASW ships as CSS + packs. Packs integrate with Hugo, Apache, Caddy,
+  Flask, Nginx, Pandoc, Python. The framework's own website currently uses the Hugo pack.
+
+  Repo structure (target):
+    src/           — framework CSS source (layers/) and lab experiments (lab/)
+    dist/          — built output: asw.css, asw.min.css
+    vendor/        — explicit dependencies (Open Props with version tracking)
+    packs/         — engine integration bundles
+    docs/          — framework documentation (markdown only, engine-agnostic)
+    examples/      — static HTML showcases of framework capabilities
+    site/          — the ASW website (currently Hugo, consumes docs/ as content)
+    openspec/      — specs and changes
+
+  Key constraint: layers 02+ must only reference semantic aliases from 01-tokens.css,
+  never Open Props primitives directly.
+
+  Lineage: Pico CSS (component patterns, absorbed), Open Props (token scales, foundation),
+  Charts.css (data-* attribute pattern, inspiration).
+
+  Forgejo: git.trentuna.com/trentuna/asw
+  Legacy repo: git.trentuna.com/trentuna/agentic-semantic-web (to be archived after import)
+
+rules:
+  proposal:
+    - Keep scope tight — this is a CSS framework, not a JS library
+    - Name the files that will be touched
+    - Consider impact on existing deployed pages (trentuna.com)
+  specs:
+    - Use Given/When/Then for behavior scenarios
+    - Specs should be testable by visual inspection in a browser
+    - Map 1:1 to CSS layer files where applicable
+  tasks:
+    - Each task should be a standalone unit of work for a single agent session
+    - Include acceptance criteria
+    - No task should touch more than 3 files
+    - Build check after every task
diff --git a/openspec/specs/framework/charts/spec.md b/openspec/specs/framework/charts/spec.md
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+# Spec: Charts (Layer 09)
+
+File: `src/layers/09-charts.css`
+
+## Purpose
+
+Data visualization using pure CSS and HTML tables. Inspired by Charts.css — uses `data-*` attributes to transform tables into visual charts.
+
+## Scope
+
+### In scope
+- Bar charts (horizontal and vertical)
+- Line charts
+- Area charts
+- Radial/gauge charts
+- Chart axes, labels, legends
+- Responsive chart sizing
+- Chart color schemes using design tokens
+
+### Out of scope
+- JavaScript-powered charts
+- Interactive chart features (tooltips on hover are CSS-only)
+
+## Lineage
+
+Inspired by Charts.css `data-*` attribute pattern. Not a port — reimplemented for ASW's token system and semantic approach.
+
+## Constraints
+
+- References only semantic aliases from `01-tokens.css`
+- Charts must be readable without CSS (the underlying table has the data)
+- Color choices must work for colorblind users
diff --git a/openspec/specs/framework/components/spec.md b/openspec/specs/framework/components/spec.md
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+# Spec: Components (Layer 05)
+
+File: `src/layers/05-components.css`
+
+## Purpose
+
+Compound UI patterns that go beyond single-element semantics. These are patterns that require specific HTML structures.
+
+## Scope
+
+### In scope
+- `dialog` — modal dialogs
+- `details` / `summary` — accordion pattern
+- Breadcrumb navigation (`[data-role="breadcrumb"]`)
+- Step indicators (`[data-role="steps"]`)
+
+### Out of scope
+- Single HTML elements with default styling (→ landmarks, typography, forms)
+- Sidebar navigation (→ navigation layer)
+- Charts (→ charts layer)
+- Data-attribute vocabulary (→ data-attributes layer)
+
+## Constraints
+
+- This layer should be small — if a pattern can be expressed by a semantic HTML element alone, it belongs in landmarks or typography, not here
+- References only semantic aliases from `01-tokens.css`
diff --git a/openspec/specs/framework/data-attributes/spec.md b/openspec/specs/framework/data-attributes/spec.md
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+# Spec: Data Attributes (Layer 07)
+
+File: `src/layers/07-data-attrs.css`
+
+## Purpose
+
+The ASW vocabulary extension layer. `data-*` attributes express concepts that HTML has no native element for. This is the core differentiator — the semantic vocabulary agents use.
+
+## Vocabulary
+
+### Task states
+- `data-task="done|todo|blocked|wip"` — task status indicators
+
+### Callouts
+- `data-callout="note|tip|warning|error"` — admonition blocks
+
+### Status
+- `data-status="active|sleeping|blocked"` — entity status
+
+### Links
+- `data-wikilink` — vault/wiki-style note links
+
+### Layout
+- `data-layout="docs|grid-2|grid-3|console"` — page layout selection
+
+### Table of contents
+- `data-toc` — marks an element as an in-page TOC
+
+### Roles
+- `data-role="breadcrumb|steps|accordion|card"` — component role disambiguation
+
+## Design Principle
+
+Every `data-*` attribute added to the vocabulary is cognitive load on every agent using the framework. Add only what cannot be expressed by existing semantic HTML.
+
+**The bar for addition:** "Can this be expressed with an existing HTML element?" If yes, don't add a data attribute.
+
+## Constraints
+
+- References only semantic aliases from `01-tokens.css`
+- Each attribute must have a clear semantic meaning (not stylistic)
+- Attribute values should be exhaustive and documented
diff --git a/openspec/specs/framework/forms/spec.md b/openspec/specs/framework/forms/spec.md
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+++ b/openspec/specs/framework/forms/spec.md
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+# Spec: Forms (Layer 04)
+
+File: `src/layers/04-forms.css`
+
+## Purpose
+
+Form element styling. Inputs, selects, textareas, buttons, checkboxes, radios, fieldsets, labels. Accessible by default.
+
+## Scope
+
+### In scope
+- `button`, `input[type="button"]`, `input[type="submit"]`, `input[type="reset"]`
+- `input[type="text|email|password|number|search|url|tel|date|time|datetime-local"]`
+- `select`, `textarea`
+- `fieldset`, `legend`, `label`
+- `input[type="checkbox"]`, `input[type="radio"]`
+- `progress`, `meter`
+- `:focus-visible` ring styling
+- `aria-invalid`, `aria-busy` states
+- `[disabled]` styling
+
+### Out of scope
+- Form layout/grid (→ layouts layer)
+- Custom form components built with data-attributes (→ data-attributes layer)
+
+## Constraints
+
+- References only semantic aliases from `01-tokens.css`
+- All interactive elements must have visible focus indicators
+- Respects `prefers-color-scheme` and `prefers-contrast`
diff --git a/openspec/specs/framework/landmarks/spec.md b/openspec/specs/framework/landmarks/spec.md
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+++ b/openspec/specs/framework/landmarks/spec.md
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+# Spec: Landmarks (Layer 03)
+
+File: `src/layers/03-landmarks.css`
+
+## Purpose
+
+Styling for HTML landmark elements — the structural bones of a page. These elements convey document structure to both browsers and screen readers.
+
+## Scope
+
+### In scope
+- `body > nav` — global navigation bar
+- `article` — content card or post
+- `aside` — sidebar panels
+- `section` — content grouping
+- `body > footer` — global footer
+- `hgroup` — heading groups
+- `header` within landmarks
+- `dt`, `dd` — definition lists (structural, not component)
+
+### Out of scope
+- Navigation menus and dropdowns (→ navigation layer)
+- Sidebar nav behavior `nav[data-nav="sidebar"]` (→ navigation layer)
+- Article styling within specific layouts (→ layouts layer)
+
+## Constraints
+
+- References only semantic aliases from `01-tokens.css`
+- Landmark styling should be layout-independent — works in any `data-layout`
diff --git a/openspec/specs/framework/layouts/spec.md b/openspec/specs/framework/layouts/spec.md
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+++ b/openspec/specs/framework/layouts/spec.md
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+# Spec: Layouts (Layer 11)
+
+File: `src/layers/11-layout.css`
+
+## Purpose
+
+Page-level layout systems. Controls how landmarks arrange on the page. Selected via `data-layout` attribute.
+
+## Layout Types
+
+### `data-layout="docs"` — Documentation
+Three-column layout: sidebar navigation, main content, table of contents. The standard documentation pattern.
+
+### `data-layout="console"` — Console
+Docs variant: sidebar flush to viewport edge. Prototype — not yet used in production.
+
+### `data-layout="grid-2"` / `data-layout="grid-3"` — Grids
+Multi-column content grids for cards, galleries, dashboards.
+
+### Essay layout
+Long-form prose with table of contents. Wider reading measure, typographic refinements.
+
+### Prose width
+`--width-prose` constrains content to readable line length within any layout.
+
+## Scope
+
+### In scope
+- `data-layout` attribute styling
+- Prose width constraints
+- Responsive layout breakpoints
+- Essay/long-form layout variant
+
+### Out of scope
+- Landmark styling within layouts (→ landmarks layer)
+- Navigation behavior within layouts (→ navigation layer)
+
+## Constraints
+
+- References only semantic aliases from `01-tokens.css`
+- Layouts must degrade gracefully on mobile (single column)
+- No layout should require JavaScript
diff --git a/openspec/specs/framework/navigation/spec.md b/openspec/specs/framework/navigation/spec.md
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+# Spec: Navigation (Layer 06)
+
+File: `src/layers/06-navigation.css`
+
+## Purpose
+
+Navigation patterns that go beyond the basic `nav` landmark. Sidebar navigation, table of contents, dropdown menus, navigation state management.
+
+## Scope
+
+### In scope
+- `nav[data-nav="sidebar"]` — sidebar navigation tree
+- `aside[data-toc]` — in-page table of contents
+- Dropdown menus within navigation
+- Active/current page indicators (`aria-current`)
+- Mobile navigation patterns
+- Navigation collapse/expand behavior
+
+### Out of scope
+- The `body > nav` landmark itself (→ landmarks layer)
+- Breadcrumbs (→ components layer)
+
+## Constraints
+
+- References only semantic aliases from `01-tokens.css`
+- Navigation must be keyboard-accessible
+- Active states use `aria-current`, not classes
diff --git a/openspec/specs/framework/tokens/spec.md b/openspec/specs/framework/tokens/spec.md
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+++ b/openspec/specs/framework/tokens/spec.md
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+# Spec: Tokens (Layer 01)
+
+File: `src/layers/01-tokens.css`
+
+## Purpose
+
+Pure design token definitions. Aliases Open Props primitives to semantic names. Contains only `:root {}` variable declarations — no rules, no selectors, no styling.
+
+## Open Props Dependency
+
+ASW builds on Open Props as its primitive token source. Open Props provides:
+- Color scales: `--color-0` through `--color-16`
+- Size scale: `--size-1` through `--size-15`, `--size-px-1` through `--size-px-12`
+- Font sizes: `--font-size-0` through `--font-size-8`
+- Font weights: `--font-weight-1` through `--font-weight-9`
+- Shadows: `--shadow-1` through `--shadow-6`
+- Border sizes: `--border-size-1` through `--border-size-5`
+- Animations, easings, gradients, and more
+
+**Version:** tracked in `vendor/open-props/VERSION`
+
+## Aliasing Contract
+
+Every Open Props primitive used in the framework MUST be aliased through this file. Downstream layers (02+) MUST reference semantic aliases, never primitives.
+
+```css
+/* YES — downstream layers use this */
+color: var(--text);
+font-weight: var(--weight-bold);
+padding: var(--space-4);
+
+/* NO — never in layers 02+ */
+color: var(--color-6);
+font-weight: var(--font-weight-7);
+padding: var(--size-3);
+```
+
+## Token Categories
+
+### Colors
+- `--surface`, `--surface-alt` — background colors
+- `--text`, `--text-muted` — foreground colors
+- `--accent`, `--accent-hover` — interactive/brand color
+- `--border`, `--border-muted` — border colors
+- `--code-bg`, `--code-text` — code block colors
+
+### Spacing
+- `--space-1` through `--space-7` — spacing scale
+- Maps to Open Props `--size-N` scale
+
+### Typography
+- `--weight-normal`, `--weight-medium`, `--weight-semibold`, `--weight-bold`
+- `--font-body`, `--font-mono` — font stacks
+- `--line-height-body`, `--line-height-heading`
+- `--width-prose` — max-width for readable text
+
+### Shadows
+- `--shadow-dropdown`, `--shadow-modal` — purpose-named shadows
+
+### Focus / Interaction
+- `--focus-ring-width` — keyboard focus ring width
+
+## Scenarios
+
+### Given a new primitive reference needed
+- **When** a downstream layer needs an Open Props value
+- **Then** add a semantic alias to this file first
+- **And** reference only the alias in the downstream layer
+
+### Given an unused token
+- **When** auditing finds a token alias with zero references in layers 02+
+- **Then** it may be removed from this file
+
+### Given this file
+- **When** inspected
+- **Then** it contains only `:root {}` with `--custom-property: value;` declarations
+- **And** no element selectors, no class selectors, no rules
diff --git a/openspec/specs/framework/typography/spec.md b/openspec/specs/framework/typography/spec.md
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+++ b/openspec/specs/framework/typography/spec.md
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+# Spec: Typography (Layer 02)
+
+File: `src/layers/02-typography.css`
+
+## Purpose
+
+Prose and heading defaults. Responsive typography scale, font stacks, line heights, heading hierarchy, inline elements (code, mark, links, abbreviations).
+
+## Scope
+
+### In scope
+- `body` font defaults
+- `h1`–`h6` sizing and weight hierarchy
+- `p`, `blockquote`, `ul`, `ol`, `li` prose rhythm
+- `a` link styling
+- `code`, `kbd`, `pre` inline/block code
+- `mark`, `abbr`, `small`, `sub`, `sup` inline semantics
+- `hr` horizontal rules
+- Responsive font-size scaling
+
+### Out of scope
+- Syntax highlighting colors (→ chroma layer)
+- Navigation typography (→ navigation layer)
+- Component-specific text styling (→ components layer)
+
+## Constraints
+
+- References only semantic aliases from `01-tokens.css`
+- No Open Props primitives directly
+- No element selectors that belong to landmarks (nav, footer, header)
diff --git a/openspec/specs/framework/utilities/spec.md b/openspec/specs/framework/utilities/spec.md
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+++ b/openspec/specs/framework/utilities/spec.md
@@ -0,0 +1,27 @@
+# Spec: Utilities (Layer 08)
+
+File: `src/layers/08-utilities.css`
+
+## Purpose
+
+Small, single-purpose helpers for text, visibility, and accessibility. The escape hatch for edge cases that don't warrant a data-attribute.
+
+## Scope
+
+### In scope
+- Text alignment helpers
+- Visually-hidden (screen reader only)
+- Visibility toggles
+- Print styles
+- `prefers-reduced-motion` resets
+- `prefers-contrast` adjustments
+
+### Out of scope
+- Layout utilities (→ layouts layer)
+- Spacing/sizing utilities (use tokens directly)
+- Color utilities (use tokens directly)
+
+## Constraints
+
+- This layer should be minimal — most needs should be met by semantic elements + data attributes
+- References only semantic aliases from `01-tokens.css`
diff --git a/openspec/specs/packs/spec.md b/openspec/specs/packs/spec.md
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+++ b/openspec/specs/packs/spec.md
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+# Spec: Packs
+
+Directory: `packs/`
+
+## Purpose
+
+Engine integration bundles. Each pack adapts ASW for a specific web server or static site generator. A pack is a self-contained directory that someone can copy into their project.
+
+## Current Packs
+
+| Pack | Purpose | Source |
+|------|---------|--------|
+| `hugo/` | Hugo theme: layouts, partials, archetypes, static assets | Legacy repo |
+| `apache/` | Autoindex styling, error pages, Apache conf snippets | Legacy repo |
+| `caddy/` | Browse template, error pages, Caddyfile snippets | Legacy repo |
+| `flask/` | Python error handler, Flask integration | Legacy repo |
+| `nginx/` | Autoindex header, error pages, Nginx conf snippets | Legacy repo |
+| `pandoc/` | HTML5 template, Lua filter for ASW output | Legacy repo |
+| `python/` | Simple Python HTTP server with ASW styling | Legacy repo |
+
+## Pack Contract
+
+Each pack directory MUST contain:
+- `README.md` — what the pack does, how to install/use it
+- All files needed for integration (conf snippets, templates, static assets)
+
+Each pack SHOULD:
+- Reference `dist/asw.css` for the framework CSS (not `src/layers/`)
+- Be self-contained — no dependencies outside the pack directory and `dist/`
+- Include example configuration
+
+## Scenarios
+
+### Given a new engine integration
+- **When** someone wants ASW support for a new engine
+- **Then** they create `packs/<engine>/` with a README and integration files
+- **And** the pack references `dist/asw.css`
+
+### Given the Hugo pack
+- **When** the ASW website is built
+- **Then** it uses `packs/hugo/` for layouts, partials, and configuration
+- **And** `site/` contains Hugo-specific overrides on top of the pack
+
+## Note
+
+The Hugo pack is special: the ASW website (`site/`) is built with it. The pack provides the base; `site/` adds content and any site-specific customization. This is both a real integration and a living example.
diff --git a/openspec/specs/repo-structure/spec.md b/openspec/specs/repo-structure/spec.md
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+++ b/openspec/specs/repo-structure/spec.md
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+# Spec: Repository Structure
+
+The directory layout contract for ASW. Defines what lives where and the boundary rules.
+
+## Directory Map
+
+```
+asw/
+  src/                  Framework CSS source
+    layers/             Numbered CSS layer files (00-reset through 12-landing)
+    main.css            Entry point — @import chain for all layers
+    lab/                Experiments and test pages (not published)
+  dist/                 Built output (committed to repo)
+    asw.css             Single concatenated file
+    asw.min.css         Minified
+  vendor/               Explicit external dependencies
+    open-props/         Open Props CSS (with VERSION file)
+    README.md           What's vendored, why, how to update
+  packs/                Engine integration bundles
+    hugo/               Hugo theme/partial integration
+    apache/             Apache autoindex + error pages
+    caddy/              Caddy browse + error pages
+    flask/              Flask error handlers
+    nginx/              Nginx autoindex + error pages
+    pandoc/             Pandoc HTML5 template + Lua filter
+    python/             Python HTTP server with ASW styling
+  docs/                 Framework documentation (markdown only)
+  examples/             Static HTML showcases (no build step needed)
+  site/                 The ASW website (currently uses Hugo pack)
+    content/            Site-specific content (articles, essays, notes)
+    layouts/            Hugo templates
+    hugo.toml           Hugo config (mounts docs/ as content/docs/)
+    static/             Site static assets
+  openspec/             Specs and changes
+```
+
+## Boundary Rules
+
+### src/ — framework only
+- Contains only CSS source files and lab experiments
+- No Hugo-specific files, no content, no templates
+- `main.css` imports from `layers/` using relative paths
+- `lab/` contains HTML files that reference layers directly — never published
+
+### dist/ — build artifacts, committed
+- Built by PostCSS from `src/main.css`
+- Committed to repo so consumers can grab without a build step
+- Regenerated on deploy, not manually edited
+
+### vendor/ — visible dependencies
+- Open Props source files copied from npm, with version tracking
+- `VERSION` file records package version and date of last update
+- Updated manually when bumping Open Props
+
+### packs/ — engine-agnostic integrations
+- Each subdirectory is a self-contained integration for one engine
+- A pack may reference `dist/asw.css` or `src/layers/` depending on its needs
+- Packs ship their own README
+
+### docs/ — markdown only
+- No HTML, no engine-specific markup
+- The site consumes these as content source (Hugo module mount)
+- GitHub/Forgejo renders these directly — no build step to read docs
+
+### examples/ — static HTML
+- Each file is a standalone demo that loads ASW
+- Can be opened in a browser by cloning the repo — no build step
+- The site may link to these but they exist independently
+
+### site/ — website concerns
+- All Hugo-specific files live here
+- `content/docs/` is mounted from `../docs/`, not duplicated
+- Site-specific content (articles, essays, notes) lives in `content/`
+- Changes to the site do not affect the framework; changes to the framework may affect the site
+
+## Scenarios
+
+### Given a new CSS layer
+- **When** an agent creates it
+- **Then** it goes in `src/layers/` with the next number
+- **And** `src/main.css` gets an @import line
+
+### Given a new framework doc
+- **When** an agent writes documentation
+- **Then** it goes in `docs/` as a .md file
+- **And** the site picks it up automatically via Hugo mount
+
+### Given a new engine integration
+- **When** someone adds support for a new engine (e.g., Eleventy)
+- **Then** it goes in `packs/<engine>/` with its own README
+
+### Given a lab experiment
+- **When** an agent wants to test a CSS pattern
+- **Then** it creates a file in `src/lab/`
+- **And** it references layers via relative paths
+- **And** it is never published to the site
diff --git a/openspec/specs/site/spec.md b/openspec/specs/site/spec.md
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+# Spec: Site
+
+Directory: `site/`
+
+## Purpose
+
+The ASW framework's own website. Serves as documentation site, demo platform, and living proof that the framework works. Currently built with the Hugo pack.
+
+## Content Types
+
+### Docs (from `../docs/`)
+Framework documentation, mounted as Hugo content via module mount. Not duplicated — sourced from the engine-agnostic `docs/` directory.
+
+### Articles (`content/articles/`)
+Short-form writing about ASW concepts, patterns, and techniques. No TOC.
+
+### Essays (`content/essays/`)
+Long-form writing. TOC, description, wider reading measure.
+
+### Notes (`content/notes/`)
+Exported PKM vault notes. Session logs, diffs, status, tasks, wikilinks.
+
+### Pages (`content/pages/`)
+Static pages: about, etc.
+
+## Engine
+
+Currently Hugo. The site uses `packs/hugo/` as its base and adds:
+- Site-specific layouts and overrides
+- `hugo.toml` with module mounts
+- Site-specific static assets
+
+## Principle
+
+The site is a consumer of the framework, not part of it. A different site could be built with `packs/flask/` or `packs/caddy/` using the same `docs/` and `dist/asw.css`. The framework does not depend on the site. The site depends on the framework.
+
+## Scenarios
+
+### Given a framework docs change
+- **When** a markdown file in `docs/` is modified
+- **Then** the site picks it up automatically via Hugo mount
+- **And** no file in `site/` needs to change
+
+### Given a CSS framework change
+- **When** `src/layers/` is modified
+- **Then** `dist/asw.css` is rebuilt
+- **And** the site serves the updated CSS
+
+### Given a site-only change (new article, essay)
+- **When** content is added to `site/content/`
+- **Then** only the site is affected
+- **And** `src/`, `dist/`, `docs/` are untouched