if (!function_exists('aq_archetype_generate_pdf')) {
    function aq_archetype_generate_pdf($name, $email, $sorted_scores, $archetypes, $primary_key, $secondary_key, $tertiary_key) {

        if (!class_exists('\Mpdf\Mpdf')) {
            return null;
        }

        try {
            $mpdf = new \Mpdf\Mpdf(array(
                'format'        => 'A4',
                'margin_left'   => 15,
                'margin_right'  => 15,
                'margin_top'    => 20,
                'margin_bottom' => 20,
                'margin_footer' => 12,
            ));
        } catch (\Exception $e) {
            return null;
        }

        // --------------------------------------------------
        // GLOBAL FONT + LINE-HEIGHT STYLES
        // --------------------------------------------------
        $stylesheet = <<<CSS
body {
    font-size: 12pt;
    line-height: 1.5;
}
h1 { font-size: 22pt; line-height: 1.2; }
h2 { font-size: 18pt; line-height: 1.3; }
h3 { font-size: 14pt; line-height: 1.4; }
p, li, td, th {
    font-size: 12pt;
    line-height: 1.5;
}
CSS;

        $mpdf->WriteHTML($stylesheet, \Mpdf\HTMLParserMode::HEADER_CSS);

        // --------------------------------------------------
        // FIX mPDF list_style_type warnings
        // --------------------------------------------------
        $mpdf->WriteHTML('
            <style>
                ul { 
                    list-style-type: disc; 
                    margin-left: 18px; 
                }
                ol { 
                    list-style-type: decimal; 
                    margin-left: 18px; 
                }
                li { 
                    margin-bottom: 6px; 
                }
            </style>
        ', \Mpdf\HTMLParserMode::HEADER_CSS);

        // --------------------------------------------------
        // your original code continues unchanged below
        // --------------------------------------------------

        $name_safe = $name ? $name : 'Anonymous';

        // (ALL YOUR EXISTING CODE BELOW THIS POINT IS UNCHANGED)
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /homepages/8/d661053363/htdocs/neil_thrussell/wp-content/plugins/archetype-quiz/includes/pdf.php:1) in <b>/homepages/8/d661053363/htdocs/neil_thrussell/wp-content/plugins/wp-super-cache/wp-cache-phase2.php</b> on line <b>1591</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /homepages/8/d661053363/htdocs/neil_thrussell/wp-content/plugins/archetype-quiz/includes/pdf.php:1) in <b>/homepages/8/d661053363/htdocs/neil_thrussell/wp-includes/pluggable.php</b> on line <b>1531</b><br />
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /homepages/8/d661053363/htdocs/neil_thrussell/wp-content/plugins/archetype-quiz/includes/pdf.php:1) in <b>/homepages/8/d661053363/htdocs/neil_thrussell/wp-includes/pluggable.php</b> on line <b>1534</b><br />