:lightning: CDN option

app.py

@@ -7,7 +7,7 @@ import logging
 from datetime import datetime
 from flask import Flask, render_template, abort, jsonify, request
 from comics_data import (
-    COMICS, COMIC_NAME, COPYRIGHT_NAME, SITE_URL, FULL_WIDTH_DEFAULT, PLAIN_DEFAULT, LOGO_IMAGE, LOGO_MODE,
+    COMICS, COMIC_NAME, COPYRIGHT_NAME, SITE_URL, CDN_URL, FULL_WIDTH_DEFAULT, PLAIN_DEFAULT, LOGO_IMAGE, LOGO_MODE,
     HEADER_IMAGE, FOOTER_IMAGE, BANNER_IMAGE, COMPACT_FOOTER, ARCHIVE_FULL_WIDTH, SECTIONS_ENABLED,
     USE_COMIC_NAV_ICONS, USE_HEADER_NAV_ICONS, USE_FOOTER_SOCIAL_ICONS, USE_SHARE_ICONS, NEWSLETTER_ENABLED,
     SOCIAL_INSTAGRAM, SOCIAL_YOUTUBE, SOCIAL_EMAIL, API_SPEC_LINK, EMBED_ENABLED, PERMALINK_ENABLED
@@ -32,6 +32,24 @@ def add_ai_blocking_headers(response):
     return response
 
 
+@app.template_filter('cdn_static')
+def cdn_static(filename):
+    """Generate URL for static assets with CDN support
+
+    When CDN_URL is set, returns CDN URL. Otherwise returns local static URL.
+
+    Args:
+        filename: Path to static file (e.g., 'css/style.css')
+
+    Returns:
+        Full URL to the static asset
+    """
+    from flask import url_for
+    if CDN_URL:
+        return f"{CDN_URL}/static/{filename}"
+    return url_for('static', filename=filename)
+
+
 @app.context_processor
 def inject_global_settings():
     """Make global settings available to all templates"""
@@ -40,6 +58,7 @@ def inject_global_settings():
         'copyright_name': COPYRIGHT_NAME if COPYRIGHT_NAME else COMIC_NAME,
         'current_year': datetime.now().year,
         'site_url': SITE_URL,
+        'cdn_url': CDN_URL,
         'logo_image': LOGO_IMAGE,
         'logo_mode': LOGO_MODE,
         'header_image': HEADER_IMAGE,