<div style="
  position: fixed;
  top: 15px;
  right: 35px;
  z-index: 2147483647;
  font-family: sans-serif;
  font-size: 12px;
">
  
  <div id="lang-btn" style="
    background: transparent;
    border: none;
    cursor: pointer;
    color: #333;
    display: inline-flex;
    align-items: center;
    gap: 4px;
  ">
    <span id="selected-lang">EN</span>
    <span id="arrow">▼</span>
  </div>

  
  <div id="dropdown" style="
    display: none;
    position: absolute;
    right: 0;
    margin-top: 4px;
    background: rgba(255,255,255,0.95);
    border: 1px solid #ccc;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    font-size: 10px;
    overflow: hidden;
  ">
    <div style="
      padding: 6px 12px;
      cursor: pointer;
      color: #333;
      background: transparent;
    " onclick="location.href='https://octopovfx.com/ko'">KO</div>
    <div style="
      padding: 6px 12px;
      cursor: pointer;
      color: #333;
      background: transparent;
    " onclick="location.href='https://octopovfx.com/en'">EN</div>
  </div>
</div>

<script>
  var btn = document.getElementById("lang-btn");
  var dropdown = document.getElementById("dropdown");
  var arrow = document.getElementById("arrow");

  btn.addEventListener("click", function () {
    var isOpen = dropdown.style.display === "block";
    dropdown.style.display = isOpen ? "none" : "block";
    arrow.textContent = isOpen ? "▲" : "▼";
  });

  document.addEventListener("click", function (e) {
    if (!btn.contains(e.target)) {
      dropdown.style.display = "none";
      arrow.textContent = "▼";
    }
  });
</script>

2D ANIMATION COURSE