<?php
session_start();
if($_SERVER['REQUEST_METHOD']==='POST'){
  if(!isset($_SESSION['k'])||!isset($_POST['c'])||$_SESSION['k']!==$_POST['c']){
    http_response_code(403);exit;
  }
  unset($_SESSION['k']);
  die("Bravo, you discovered something secret!");
}
$_SESSION['k']=bin2hex(random_bytes(16));
?>
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width,initial-scale=1.0"><title>MUKKA-NET</title><style>html,body{margin:0;padding:0;overflow:hidden;background:#000;color:#0f0;font-family:'Courier New',monospace}.mk{position:absolute;top:40%;left:50%;transform:translate(-50%,-50%);font-size:2em;font-weight:bold;text-align:center;z-index:1;text-shadow:2px 2px 5px #000;opacity:0;animation:fadeIn 3s ease-in-out forwards}@keyframes fadeIn{0%{opacity:0}100%{opacity:1}}#cv{display:block}#ms{position:absolute;top:60%;left:50%;transform:translate(-50%,-50%);color:#0f0;font-size:2em;font-weight:bold;text-shadow:2px 2px 5px #000;z-index:2;display:none;text-align:center}</style></head><body>
<div class="mk">Welcome to MUKKA-NET<br>Reverse Engineering World<br>Unlocking the secrets beyond the code</div>
<canvas id="cv"></canvas>
<div id="ms"></div>
<script>
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</body></html>