{# Only the active theme's stylesheet: a static skin for built-in themes, or
DB-stored CSS for runtime (AI-generated) custom themes. A page may override
`theme_css_url` to load a different sheet (e.g. the themes page previews the
theme it's viewing, working draft included). #}
{% block extra_styles %}{% endblock %}
{% with messages = get_flashed_messages(with_categories=true) %}
{% if messages %}