<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>Security Verification</title>
    <style>
        body { font-family: Arial, sans-serif; text-align: center; padding-top: 50px; }
        .loading { color: #666; }
    </style>
</head>
<body>
    <div class="loading">
        <p>Verifying your browser...</p>
        <p>Please wait while we confirm you are not a robot.</p>
    </div>
    
    <script>
        // 检测自动化工具特征
        if (navigator.webdriver || 
            window.outerHeight - window.innerHeight < 100 ||
            window.outerWidth - window.innerWidth < 100 ||
            !window.chrome) {
            // 可能是自动化工具
            document.body.innerHTML = "<p>Access denied</p>";
            return;
        }
        
        // 更复杂的客户端验证
        function generateVerification() {
            var testDiv = document.createElement('div');
            testDiv.innerHTML = '<!--[if IE]><i></i><![endif]-->';
            return testDiv.getElementsByTagName('i').length;
        }
        
        // 多重验证
        setTimeout(function(){
            if (generateVerification() >= 0) {
                document.cookie = "enhanced_js_challenge=2d070423b4d988980437c0e7bae502701c129fca41bd08043b65846888e49ffa; path=/; Secure; HttpOnly";
                location.reload();
            }
        }, 1500 + Math.random() * 2000); // 随机延迟
    </script>
</body>
</html>