diff --git a/.gitignore b/.gitignore
index 1a21d5c..51eeb37 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,3 +7,7 @@ doc/
 build/
 
 .obsidian/
+
+# Comments server secrets and data
+comments-server/.env
+comments-server/data/
diff --git a/CLAUDE.md b/CLAUDE.md
index 5fa59a5..d1e8179 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -43,8 +43,9 @@ Output to build/ (dev) or deploy/ (prod)
   - `ultima.lua` - Main entry point (CLI args, orchestration)
   - `config.lua` - TOML configuration loader
   - `lock_files.lua` - Change tracking/cache system
-  - `templates/engine.lua` - Custom templating engine
+  - `template_engine.lua` - Custom templating engine
   - `pandoc/processor.lua` - Pandoc filter for frontmatter
+  - `templates/` - Shared default templates (fallback for sites)
   - `utils/` - File I/O, formatters, functional utilities
 
 - `sites/{site}/` - Site-specific content
@@ -59,7 +60,7 @@ Output to build/ (dev) or deploy/ (prod)
 Templates use `.htmlua` extension with custom syntax (all expressions end with `}}`):
 - `{{ expression }}` - Variable/expression output
 - `{% lua code }}` - Lua control flow (if/for/end)
-- Escaping: `\{` for literal braces
+- Escaping: `\{` for literal opening braces (closing braces `}` don't need escaping)
 
 Template context includes: `config`, `content`, `metadata`, `title`, `links`, `generate_absolute_path()`
 
@@ -87,3 +88,9 @@ Each site deploys via git subtree to a separate branch (`deploy-{site}`). The ma
 - Lock files track file checksums to avoid unnecessary rewrites; use `-f` flag to force rebuild
 - `content_type: "media"` references static files instead of rendering markdown
 - `draft: true` hides content in production builds
+
+## Documentation Conventions
+
+- Use first person plural ("we", "our") rather than second person ("you", "your")
+- Keep documentation concise and focused on implementation details
+- Place project documentation in `docs/` directory
diff --git a/comments-server/Caddyfile b/comments-server/Caddyfile
new file mode 100644
index 0000000..49e0f22
--- /dev/null
+++ b/comments-server/Caddyfile
@@ -0,0 +1,96 @@
+# Remark42 Comment Server
+# Replace {$REMARK_DOMAIN} with your actual domain (e.g., comments.dupe.sh)
+# Or set the REMARK_DOMAIN environment variable
+
+{
+    auto_https off
+}
+
+:80 {
+    # CORS headers applied to ALL responses (including redirects)
+    header {
+        Access-Control-Allow-Origin "*"
+        Access-Control-Allow-Methods "GET, POST, PUT, DELETE, OPTIONS"
+        Access-Control-Allow-Headers "Content-Type, Authorization"
+        defer
+    }
+
+    # Serve site-specific CSS based on Referer header containing site_id
+    @dupe_sh {
+        header_regexp Referer site_id=dupe_sh
+        path /web/remark.css
+    }
+    route @dupe_sh {
+        header Content-Type "text/css; charset=utf-8"
+        root * /srv/static
+        rewrite * /theme-dupe_sh.css
+        file_server
+    }
+
+    @rorschach {
+        header_regexp Referer site_id=rorschach
+        path /web/remark.css
+    }
+    route @rorschach {
+        header Content-Type "text/css; charset=utf-8"
+        root * /srv/static
+        rewrite * /theme-rorschach.css
+        file_server
+    }
+
+    @whwg {
+        header_regexp Referer site_id=whwg
+        path /web/remark.css
+    }
+    route @whwg {
+        header Content-Type "text/css; charset=utf-8"
+        root * /srv/static
+        rewrite * /theme-whwg.css
+        file_server
+    }
+
+    # Default theme fallback for unknown sites
+    route /web/remark.css {
+        header Content-Type "text/css; charset=utf-8"
+        root * /srv/static
+        rewrite * /theme-default.css
+        file_server
+    }
+
+    route /web/last-comments.css {
+        header Content-Type "text/css; charset=utf-8"
+        root * /srv/static
+        rewrite * /last-comments-custom.css
+        file_server
+    }
+
+    route /web-orig/*.css {
+        uri replace /web-orig/ /web/
+        reverse_proxy remark42:8080 {
+            header_down Content-Type "text/css; charset=utf-8"
+            header_down -X-Content-Type-Options
+        }
+    }
+
+    route /web-orig/* {
+        uri replace /web-orig/ /web/
+        reverse_proxy remark42:8080
+    }
+
+    route /static/* {
+        root * /srv
+        file_server
+    }
+
+    reverse_proxy remark42:8080 {
+        # Override CSP to allow fonts from any source
+        header_down Content-Security-Policy "default-src 'none'; base-uri 'none'; form-action 'none'; connect-src 'self'; frame-src 'self' mailto:; img-src *; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; font-src * data:; object-src 'none'; frame-ancestors *;"
+    }
+
+    log {
+        output file /data/access.log {
+            roll_size 10mb
+            roll_keep 3
+        }
+    }
+}
diff --git a/comments-server/README.md b/comments-server/README.md
new file mode 100644
index 0000000..76a4999
--- /dev/null
+++ b/comments-server/README.md
@@ -0,0 +1,152 @@
+# Remark42 Comment Server
+
+Self-hosted comment system for Ultima-powered sites.
+
+## Prerequisites
+
+- A VPS or server with Docker and Docker Compose installed
+- A domain/subdomain pointed to the server (e.g., `comments.dupe.sh`)
+- (Optional) GitHub OAuth app for GitHub login
+
+## Quick Start
+
+### 1. Copy configuration
+
+```bash
+cp .env.example .env
+```
+
+### 2. Edit `.env` with your settings
+
+Required settings:
+- `REMARK_URL` - Full URL where comments will be hosted (e.g., `https://comments.dupe.sh`)
+- `REMARK_DOMAIN` - Domain without protocol (e.g., `comments.dupe.sh`)
+- `SECRET` - Random string for JWT signing (generate with `openssl rand -base64 32`)
+- `SITE_ID` - Site identifier(s), comma-separated for multiple sites
+- `ADMIN_SHARED_ID` - Your admin user ID (see below)
+
+### 3. Set up GitHub OAuth (recommended)
+
+1. Go to [GitHub Developer Settings](https://github.com/settings/developers)
+2. Create a new OAuth App:
+   - **Application name**: Your site comments
+   - **Homepage URL**: `https://comments.dupe.sh`
+   - **Authorization callback URL**: `https://comments.dupe.sh/auth/github/callback`
+3. Copy the Client ID and Client Secret to your `.env` file
+
+### 4. Find your GitHub user ID
+
+```bash
+curl -s https://api.github.com/users/YOUR_USERNAME | jq .id
+```
+
+Use this as `ADMIN_SHARED_ID` with format: `github_YOURID`
+
+### 5. Start the server
+
+```bash
+docker compose up -d
+```
+
+### 6. Verify it's running
+
+```bash
+# Check container status
+docker compose ps
+
+# Check logs
+docker compose logs -f remark42
+
+# Test the API
+curl https://comments.dupe.sh/api/v1/config
+```
+
+## Configuration
+
+### Multiple Sites
+
+To support multiple Ultima sites, use comma-separated site IDs:
+
+```env
+SITE_ID=dupe_sh,rorschach,whwg
+```
+
+Each site uses its own `site_id` in the Ultima `config.toml`.
+
+### Authentication Options
+
+| Provider | Environment Variables |
+|----------|----------------------|
+| GitHub | `AUTH_GITHUB_CID`, `AUTH_GITHUB_CSEC` |
+| Anonymous | `AUTH_ANON=true` |
+| Email | `AUTH_EMAIL_ENABLE=true`, SMTP settings |
+
+### Notifications
+
+Set `NOTIFY_TYPE` to receive notifications for new comments:
+
+- `telegram` - Requires `NOTIFY_TELEGRAM_TOKEN` and `NOTIFY_TELEGRAM_CHAN`
+- `email` - Uses SMTP settings
+- `slack` - Requires webhook URL
+- `none` - Disabled (default)
+
+## Maintenance
+
+### Backup data
+
+```bash
+# Stop containers
+docker compose stop
+
+# Backup data directory
+tar -czvf remark42-backup-$(date +%Y%m%d).tar.gz data/
+
+# Restart
+docker compose start
+```
+
+### Update Remark42
+
+```bash
+docker compose pull
+docker compose up -d
+```
+
+### View logs
+
+```bash
+docker compose logs -f remark42
+docker compose logs -f caddy
+```
+
+## Admin Interface
+
+Access the admin panel at: `https://comments.dupe.sh/web/admin`
+
+You must be logged in with an account matching `ADMIN_SHARED_ID`.
+
+## Troubleshooting
+
+### SSL certificate issues
+
+Caddy automatically obtains Let's Encrypt certificates. If issues occur:
+
+```bash
+# Check Caddy logs
+docker compose logs caddy
+
+# Ensure port 80 and 443 are open
+# Ensure DNS is properly configured
+```
+
+### CORS errors
+
+The Caddyfile includes CORS headers. If you see CORS errors, verify:
+1. The `REMARK_URL` matches the actual URL
+2. Your site's domain is accessible
+
+### Comments not loading
+
+1. Check browser console for errors
+2. Verify `site_id` matches between Remark42 and Ultima config
+3. Check Remark42 logs: `docker compose logs remark42`
diff --git a/comments-server/docker-compose.yml b/comments-server/docker-compose.yml
new file mode 100644
index 0000000..a9d4fae
--- /dev/null
+++ b/comments-server/docker-compose.yml
@@ -0,0 +1,61 @@
+services:
+  remark42:
+    image: umputun/remark42:latest
+    container_name: remark42
+    restart: unless-stopped
+    environment:
+      - REMARK_URL=${REMARK_URL}
+      - SECRET=${SECRET}
+      - SITE=${SITE_ID}
+      - ADMIN_SHARED_ID=${ADMIN_SHARED_ID}
+      # Auth providers (uncomment and configure as needed)
+      - AUTH_GITHUB_CID=${AUTH_GITHUB_CID:-}
+      - AUTH_GITHUB_CSEC=${AUTH_GITHUB_CSEC:-}
+      # Anonymous comments (disable in production if unwanted)
+      - AUTH_ANON=${AUTH_ANON:-true}
+      # Email auth (optional)
+      - AUTH_EMAIL_ENABLE=${AUTH_EMAIL_ENABLE:-false}
+      - SMTP_HOST=${SMTP_HOST:-}
+      - SMTP_PORT=${SMTP_PORT:-}
+      - SMTP_USERNAME=${SMTP_USERNAME:-}
+      - SMTP_PASSWORD=${SMTP_PASSWORD:-}
+      - SMTP_TLS=${SMTP_TLS:-true}
+      - AUTH_EMAIL_FROM=${AUTH_EMAIL_FROM:-}
+      # Notifications (optional)
+      - NOTIFY_TYPE=${NOTIFY_TYPE:-none}
+      - NOTIFY_TELEGRAM_TOKEN=${NOTIFY_TELEGRAM_TOKEN:-}
+      - NOTIFY_TELEGRAM_CHAN=${NOTIFY_TELEGRAM_CHAN:-}
+      # Moderation
+      - ADMIN_SHARED_EMAIL=${ADMIN_SHARED_EMAIL:-}
+      # Rate limiting
+      - MAX_COMMENT_SIZE=2048
+      - LOW_SCORE=-5
+      - CRITICAL_SCORE=-10
+    volumes:
+      - ./data:/srv/var:Z
+    ports:
+      - "127.0.0.1:8080:8080"
+    logging:
+      driver: "json-file"
+      options:
+        max-size: "10m"
+        max-file: "3"
+
+  caddy:
+    image: caddy:2-alpine
+    container_name: caddy
+    restart: unless-stopped
+    ports:
+      - "8081:80"
+      - "8443:443"
+    volumes:
+      - ./Caddyfile:/etc/caddy/Caddyfile:ro,Z
+      - ./static:/srv/static:ro,Z
+      - caddy_data:/data
+      - caddy_config:/config
+    depends_on:
+      - remark42
+
+volumes:
+  caddy_data:
+  caddy_config:
diff --git a/comments-server/static/BerkeleyMono-Regular.woff b/comments-server/static/BerkeleyMono-Regular.woff
new file mode 100644
index 0000000..041d639
--- /dev/null
+++ b/comments-server/static/BerkeleyMono-Regular.woff
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ad1dffe358c814a5ea8ee8ba0b157893970bc019a195cc09500e07ac80d8e2e4
+size 40708
diff --git a/comments-server/static/BerkeleyMono-Regular.woff2 b/comments-server/static/BerkeleyMono-Regular.woff2
new file mode 100644
index 0000000..cbde351
--- /dev/null
+++ b/comments-server/static/BerkeleyMono-Regular.woff2
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ef207076b3bcbd0f60a37075d96b91bcec2322a47c1bf109535659de9fe7ca46
+size 37736
diff --git a/comments-server/static/last-comments-custom.css b/comments-server/static/last-comments-custom.css
new file mode 100644
index 0000000..216843e
--- /dev/null
+++ b/comments-server/static/last-comments-custom.css
@@ -0,0 +1,7 @@
+/* Import original Remark42 last-comments styles */
+@import '/web-orig/last-comments.css';
+
+/* Custom overrides */
+body {
+    font-family: 'berkeley_mono_regular', ui-monospace, monospace;
+}
diff --git a/comments-server/static/remark-base.css b/comments-server/static/remark-base.css
new file mode 100644
index 0000000..23a133f
--- /dev/null
+++ b/comments-server/static/remark-base.css
@@ -0,0 +1,216 @@
+/* Import original Remark42 styles */
+@import '/web-orig/remark.css';
+
+/* Load the custom font from comments server */
+@font-face {
+    font-family: 'berkeley_mono_regular';
+    src: url('/static/BerkeleyMono-Regular.woff2') format('woff2'),
+         url('/static/BerkeleyMono-Regular.woff') format('woff');
+    font-weight: normal;
+    font-style: normal;
+}
+
+/* Base font and background for everything */
+body {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    padding: 0 !important;
+    background-color: var(--ultima-bg) !important;
+    color: var(--ultima-text) !important;
+}
+
+button,
+input,
+select,
+textarea {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+}
+
+/* Root container */
+.root {
+    color: var(--ultima-text) !important;
+}
+
+/* Links */
+a {
+    color: var(--ultima-primary) !important;
+}
+
+a:hover {
+    color: var(--ultima-primary-dark) !important;
+}
+
+/* Comment form */
+.comment-form {
+    background-color: var(--ultima-bg) !important;
+    border-color: var(--ultima-border) !important;
+}
+
+.comment-form_theme_light {
+    background-color: var(--ultima-bg) !important;
+    border-color: var(--ultima-border) !important;
+}
+
+/* Textarea */
+.comment-form__field {
+    background-color: var(--ultima-bg) !important;
+    color: var(--ultima-text) !important;
+    border: 1px solid var(--ultima-border) !important;
+    border-radius: 0 !important;
+}
+
+/* Control panel (toolbar area) */
+.comment-form__control-panel {
+    background-color: var(--ultima-bg-highlight) !important;
+}
+
+/* Actions area (buttons) */
+.comment-form__actions {
+    background-color: var(--ultima-bg-highlight) !important;
+}
+
+/* All buttons - remove border radius */
+.button,
+.C_A {
+    border-radius: 0 !important;
+}
+
+/* Primary button (Send) */
+.button_kind_primary {
+    background-color: var(--ultima-primary) !important;
+    border-radius: 0 !important;
+}
+
+/* Secondary button (Preview) */
+.button_kind_secondary {
+    background-color: var(--ultima-bg) !important;
+    color: var(--ultima-text) !important;
+    border-radius: 0 !important;
+}
+
+/* Reply button */
+.C_A.C_G {
+    color: var(--ultima-primary) !important;
+}
+
+/* Comment text */
+.comment__text,
+.raw-content {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+}
+
+/* Username */
+.comment__username {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    color: var(--ultima-text-muted) !important;
+}
+
+/* Timestamp */
+.comment__time {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    color: var(--ultima-text-muted) !important;
+}
+
+/* Auth panel */
+.auth-panel {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+}
+
+/* Sort picker */
+.sort-picker,
+.select {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+}
+
+/* Markdown help text */
+.comment-form__markdown,
+.comment-form__rss {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    color: var(--ultima-text-muted) !important;
+}
+
+.comment-form__markdown-link {
+    color: var(--ultima-primary) !important;
+}
+
+.comment-form__markdown-link:hover {
+    color: var(--ultima-primary-dark) !important;
+}
+
+/* Copyright */
+.root__copyright {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    color: var(--ultima-text-muted) !important;
+}
+
+.root__copyright-link {
+    color: var(--ultima-text-muted) !important;
+}
+
+/* ===========================================
+   Sign In Flow
+   =========================================== */
+
+/* Auth container */
+.auth {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+}
+
+/* Sign In button */
+.auth-button {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    background-color: var(--ultima-bg-highlight) !important;
+    color: var(--ultima-text) !important;
+    border: 1px solid var(--ultima-border) !important;
+    border-radius: 0 !important;
+}
+
+/* Dropdown panel */
+.auth-dropdown {
+    background-color: var(--ultima-bg) !important;
+    border: 1px solid var(--ultima-border) !important;
+    border-radius: 0 !important;
+}
+
+/* Auth form */
+.auth-form {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+}
+
+/* Form titles */
+.auth-form-title {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    color: var(--ultima-text) !important;
+}
+
+/* OAuth buttons container */
+.oauth {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+}
+
+/* OAuth button (GitHub, etc) */
+.oauth-button {
+    border-radius: 0 !important;
+    background-color: var(--ultima-bg-highlight) !important;
+}
+
+/* Divider ("or") */
+.auth-divider {
+    color: var(--ultima-text-muted) !important;
+}
+
+/* Username input */
+.auth-input-username {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    background-color: var(--ultima-bg) !important;
+    color: var(--ultima-text) !important;
+    border: 1px solid var(--ultima-border) !important;
+    border-radius: 0 !important;
+}
+
+/* Submit button */
+.auth-submit {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    background-color: var(--ultima-primary) !important;
+    color: white !important;
+    border-radius: 0 !important;
+}
diff --git a/comments-server/static/remark-custom.css b/comments-server/static/remark-custom.css
new file mode 100644
index 0000000..7fe0396
--- /dev/null
+++ b/comments-server/static/remark-custom.css
@@ -0,0 +1,163 @@
+/* Import original Remark42 styles */
+@import '/web-orig/remark.css';
+
+/* Load the custom font from comments server */
+@font-face {
+    font-family: 'berkeley_mono_regular';
+    src: url('/static/BerkeleyMono-Regular.woff2') format('woff2'),
+         url('/static/BerkeleyMono-Regular.woff') format('woff');
+    font-weight: normal;
+    font-style: normal;
+}
+
+/* Custom overrides to match Ultima site themes */
+
+/* Color variables matching dupe_sh theme.css */
+:root {
+    --ultima-bg: #f0f4fc;
+    --ultima-text: #333333;
+    --ultima-text-muted: #6b7280;
+    --ultima-primary: #3498db;
+    --ultima-primary-dark: #2471a3;
+    --ultima-border: #dae1f0;
+    --ultima-bg-highlight: #dae1f0;
+}
+
+/* Base font and background for everything */
+body {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    padding: 0 !important;
+    background-color: var(--ultima-bg) !important;
+    color: var(--ultima-text) !important;
+}
+
+button,
+input,
+select,
+textarea {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+}
+
+/* Root container */
+.root {
+    color: var(--ultima-text) !important;
+}
+
+/* Links */
+a {
+    color: var(--ultima-primary) !important;
+}
+
+a:hover {
+    color: var(--ultima-primary-dark) !important;
+}
+
+/* Comment form */
+.comment-form {
+    background-color: var(--ultima-bg) !important;
+    border-color: var(--ultima-border) !important;
+}
+
+.comment-form_theme_light {
+    background-color: var(--ultima-bg) !important;
+    border-color: var(--ultima-border) !important;
+}
+
+/* Textarea */
+.comment-form__field {
+    background-color: var(--ultima-bg) !important;
+    color: var(--ultima-text) !important;
+    border: 1px solid var(--ultima-border) !important;
+    border-radius: 0 !important;
+}
+
+/* Control panel (toolbar area) */
+.comment-form__control-panel {
+    background-color: var(--ultima-bg-highlight) !important;
+}
+
+/* Actions area (buttons) */
+.comment-form__actions {
+    background-color: var(--ultima-bg-highlight) !important;
+}
+
+/* All buttons - remove border radius */
+.button,
+.C_A {
+    border-radius: 0 !important;
+}
+
+/* Primary button (Send) */
+.button_kind_primary {
+    background-color: var(--ultima-primary) !important;
+    border-radius: 0 !important;
+}
+
+.button_kind_primary:hover {
+    background-color: var(--ultima-primary-dark) !important;
+}
+
+/* Secondary button (Preview) */
+.button_kind_secondary {
+    background-color: var(--ultima-bg) !important;
+    color: var(--ultima-text) !important;
+    border-radius: 0 !important;
+}
+
+.button_kind_secondary:hover {
+    box-shadow: inset 0 0 0 2px var(--ultima-primary) !important;
+}
+
+/* Reply button */
+.C_A.C_G {
+    color: var(--ultima-primary) !important;
+}
+
+.C_A.C_G:hover {
+    background-color: var(--ultima-bg-highlight) !important;
+}
+
+/* Comment text */
+.comment__text,
+.raw-content {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+}
+
+/* Username */
+.comment__username {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    color: var(--ultima-text-muted) !important;
+}
+
+/* Timestamp */
+.comment__time {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    color: var(--ultima-text-muted) !important;
+}
+
+/* Auth panel */
+.auth-panel {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+}
+
+/* Sort picker */
+.sort-picker,
+.select {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+}
+
+/* Markdown help text */
+.comment-form__markdown,
+.comment-form__rss {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+}
+
+/* Copyright */
+.root__copyright {
+    font-family: 'berkeley_mono_regular', ui-monospace, SFMono-Regular, monospace !important;
+    color: var(--ultima-text-muted) !important;
+}
+
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+    color: var(--ultima-text-muted) !important;
+}
diff --git a/comments-server/static/theme-default.css b/comments-server/static/theme-default.css
new file mode 100644
index 0000000..d64e7a9
--- /dev/null
+++ b/comments-server/static/theme-default.css
@@ -0,0 +1,20 @@
+/* Default theme - neutral grey */
+@import '/static/remark-base.css';
+
+:root {
+    /* Ultima theme variables */
+    --ultima-bg: #f5f5f5;
+    --ultima-text: #333333;
+    --ultima-text-muted: #6b7280;
+    --ultima-primary: #555555;
+    --ultima-primary-dark: #333333;
+    --ultima-border: #e0e0e0;
+    --ultima-bg-highlight: #e8e8e8;
+
+    /* Remark42 CSS variables for hover/focus states */
+    --primary-color: 85, 85, 85;  /* #555555 in RGB for rgba() */
+    --color9: #333333;            /* toolbar hover */
+    --color15: #555555;           /* textarea focus border */
+    --color33: #555555;           /* secondary button hover, link hover */
+    --color47: rgba(85, 85, 85, 0.2);  /* textarea focus box-shadow */
+}
diff --git a/comments-server/static/theme-dupe_sh.css b/comments-server/static/theme-dupe_sh.css
new file mode 100644
index 0000000..56984e4
--- /dev/null
+++ b/comments-server/static/theme-dupe_sh.css
@@ -0,0 +1,20 @@
+/* dupe_sh theme - Blue */
+@import '/static/remark-base.css';
+
+:root {
+    /* Ultima theme variables */
+    --ultima-bg: #f0f4fc;
+    --ultima-text: #333333;
+    --ultima-text-muted: #6b7280;
+    --ultima-primary: #3498db;
+    --ultima-primary-dark: #2471a3;
+    --ultima-border: #dae1f0;
+    --ultima-bg-highlight: #dae1f0;
+
+    /* Remark42 CSS variables for hover/focus states */
+    --primary-color: 52, 152, 219;  /* #3498db in RGB for rgba() */
+    --color9: #2471a3;              /* toolbar hover */
+    --color15: #3498db;             /* textarea focus border */
+    --color33: #3498db;             /* secondary button hover, link hover */
+    --color47: rgba(52, 152, 219, 0.2);  /* textarea focus box-shadow */
+}
diff --git a/comments-server/static/theme-rorschach.css b/comments-server/static/theme-rorschach.css
new file mode 100644
index 0000000..b1456dc
--- /dev/null
+++ b/comments-server/static/theme-rorschach.css
@@ -0,0 +1,20 @@
+/* rorschach theme - Dusty Rose/Maroon */
+@import '/static/remark-base.css';
+
+:root {
+    /* Ultima theme variables */
+    --ultima-bg: #f1e5e5;
+    --ultima-text: #2a2a2e;
+    --ultima-text-muted: #6b7280;
+    --ultima-primary: #8c4848;
+    --ultima-primary-dark: #6d3636;
+    --ultima-border: #e0d4d4;
+    --ultima-bg-highlight: #e0d4d4;
+
+    /* Remark42 CSS variables for hover/focus states */
+    --primary-color: 140, 72, 72;  /* #8c4848 in RGB for rgba() */
+    --color9: #6d3636;             /* toolbar hover */
+    --color15: #8c4848;            /* textarea focus border */
+    --color33: #8c4848;            /* secondary button hover, link hover */
+    --color47: rgba(140, 72, 72, 0.2);  /* textarea focus box-shadow */
+}
diff --git a/comments-server/static/theme-whwg.css b/comments-server/static/theme-whwg.css
new file mode 100644
index 0000000..ac37b7d
--- /dev/null
+++ b/comments-server/static/theme-whwg.css
@@ -0,0 +1,20 @@
+/* whwg theme - Lavender/Purple */
+@import '/static/remark-base.css';
+
+:root {
+    /* Ultima theme variables */
+    --ultima-bg: #f3eefc;
+    --ultima-text: #333333;
+    --ultima-text-muted: #6b7280;
+    --ultima-primary: #8c62c7;
+    --ultima-primary-dark: #4a437d;
+    --ultima-border: #eae4f8;
+    --ultima-bg-highlight: #eae4f8;
+
+    /* Remark42 CSS variables for hover/focus states */
+    --primary-color: 140, 98, 199;  /* #8c62c7 in RGB for rgba() */
+    --color9: #4a437d;              /* toolbar hover */
+    --color15: #8c62c7;             /* textarea focus border */
+    --color33: #8c62c7;             /* secondary button hover, link hover */
+    --color47: rgba(140, 98, 199, 0.2);  /* textarea focus box-shadow */
+}
diff --git a/sites/dupe_sh/config.toml b/sites/dupe_sh/config.toml
index 5ce3582..821d60a 100644
--- a/sites/dupe_sh/config.toml
+++ b/sites/dupe_sh/config.toml
@@ -16,3 +16,10 @@ default         = "page.htmlua"
 index_page      = "index.htmlua"
 post            = "post.htmlua"
 feed            = "feed.xmlua"
+
+[comments]
+enabled         = true
+remark_url      = "http://localhost:8081"
+site_id         = "dupe_sh"
+theme           = "light"
+locale          = "en"
diff --git a/sites/dupe_sh/dupe_sh.lock b/sites/dupe_sh/dupe_sh.lock
index 8f67061..772ebd7 100644
--- a/sites/dupe_sh/dupe_sh.lock
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+      "file_size":"1.04 KiB",
+      "checksum":"e11d0bdc043d51ac853d1ba86071d654",
+      "metadata_checksum":"9f2d2b1c553e9823fbff13c636ea0b0f",
+      "last_modified_ts":"2025-03-09T00:55:12Z"
+    },
+    "sites/rorschach/content/projects.md":{
+      "file_size":"1.09 KiB",
+      "checksum":"0fbef9e6883406a9125478982ff5edd0",
+      "metadata_checksum":"67d12d2007aadd4c13b2ba853e7066ba",
+      "last_modified_ts":"2025-03-09T00:55:13Z"
+    },
+    "sites/rorschach/content/commentary/imagine you are siri keeton.md":{
+      "file_size":"851.00 B",
+      "checksum":"68b329da9893e34099c7d8ad5cb9c940",
+      "metadata_checksum":"2724605debf3aa660ed858e5f676e55c",
+      "last_modified_ts":"2025-03-09T00:55:13Z"
     }
   }
 }
\ No newline at end of file
diff --git a/sites/whwg/config.toml b/sites/whwg/config.toml
index 8034ac9..2485a42 100644
--- a/sites/whwg/config.toml
+++ b/sites/whwg/config.toml
@@ -16,3 +16,10 @@ default         = "page.htmlua"
 index_page      = "index.htmlua"
 post            = "post.htmlua"
 feed            = "feed.xmlua"
+
+[comments]
+enabled         = true
+remark_url      = "http://localhost:8081"
+site_id         = "whwg"
+theme           = "light"
+locale          = "en"
diff --git a/sites/whwg/whwg.lock b/sites/whwg/whwg.lock
index 30de0d7..9f4a831 100644
--- a/sites/whwg/whwg.lock
+++ b/sites/whwg/whwg.lock
@@ -1,16 +1,16 @@
 {
   "files":{
-    "sites/whwg/content/about.md":{
-      "metadata_checksum":"99914b932bd37a50b983c5e7c90ae93b",
-      "checksum":"95541378cfc2a3c2d9815075d2169945",
-      "file_size":"1.38 KiB",
-      "last_modified_ts":"2025-03-09T00:33:35Z"
-    },
     "sites/whwg/content/newsletters/newsletter 1 - introductions, plans, hopes, dreams, fears!.md":{
-      "metadata_checksum":"a465803e3babaf789d34c3b12817b6b3",
       "checksum":"68b329da9893e34099c7d8ad5cb9c940",
+      "metadata_checksum":"a465803e3babaf789d34c3b12817b6b3",
       "file_size":"879.00 B",
       "last_modified_ts":"2025-03-09T00:33:35Z"
+    },
+    "sites/whwg/content/about.md":{
+      "checksum":"95541378cfc2a3c2d9815075d2169945",
+      "metadata_checksum":"99914b932bd37a50b983c5e7c90ae93b",
+      "file_size":"1.38 KiB",
+      "last_modified_ts":"2025-03-09T00:33:35Z"
     }
   }
 }
\ No newline at end of file
diff --git a/src/static/css/main.css b/src/static/css/main.css
index 5f04e2a..94ddddf 100644
--- a/src/static/css/main.css
+++ b/src/static/css/main.css
@@ -732,3 +732,21 @@ a {
         min-width: auto;
     }
 }
+
+/* Comments Section (Remark42) */
+.comments-section {
+    margin-top: 3rem;
+    padding-top: 2rem;
+    border-top: 1px solid var(--color-border);
+}
+
+.comments-section h2 {
+    margin-bottom: 1.5rem;
+    font-size: 1.25rem;
+    color: var(--color-text);
+}
+
+/* Remark42 container styling */
+#remark42 {
+    /* Remark42 renders in a cross-origin iframe, so we can only style the container */
+}
diff --git a/src/templates/post.htmlua b/src/templates/post.htmlua
index 58809bc..94b725e 100644
--- a/src/templates/post.htmlua
+++ b/src/templates/post.htmlua
@@ -42,4 +42,27 @@
         <a href="{{ metadata.discussion_link }}">discuss</a>
     {% end }}
 
+    {% if config.comments and config.comments.enabled and metadata.comments ~= false then }}
+        <div class="comments-section">
+            <h2>Comments</h2>
+            <div id="remark42"></div>
+            <script>
+                var remark_config = \{
+                    host: '{{ config.comments.remark_url }}',
+                    site_id: '{{ config.comments.site_id }}',
+                    url: '{{ config.main.site_url }}{{ link }}',
+                    theme: '{{ config.comments.theme or "light" }}',
+                    locale: '{{ config.comments.locale or "en" }}'
+                };
+            </script>
+            <script>
+                !function(e,n)\{for(var o=0;o<e.length;o++)\{
+                var r=n.createElement("script"),c=".js",d=n.head||n.body;
+                "noModule"in r?(r.type="module",c=".mjs"):r.async=!0,
+                r.defer=!0,r.src=remark_config.host+"/web/"+e[o]+c,
+                d.appendChild(r)}}(["embed"],document);
+            </script>
+        </div>
+    {% end }}
+
 </div>