index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <meta http-equiv="refresh" content="0; url=landing.html" />
  <title>Sparky</title>
  <style>
    body { margin: 0; background: #FAF9F6; color: #1A1814; font: 16px/1.5 system-ui, sans-serif; }
    p { padding: 2rem 1rem; text-align: center; }
    a { color: #B45309; }
  </style>
  <!-- Replace, so Back does not land here and bounce forward again, and keep
       any query or hash (landing.html#signin opens the sign-in dialog). -->
  <script>location.replace('landing.html' + location.search + location.hash);</script>
</head>
<body>
  <p>Opening <a href="landing.html">Sparky</a>…</p>
</body>
</html>