(function () {
  const style = document.createElement("style");
  style.innerHTML = `
    .ad-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.8);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      z-index: 99;
      padding: 20px;
      box-sizing: border-box;
    }

    .ad-banner-container {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 10px;
      max-width: 100%;
      overflow: hidden;
      margin-bottom: 10px;
    }

    .ad-banner-item333 {
      flex: 0 0 calc(50% - 10px);
      max-width: 250px;
      box-sizing: border-box;
    }

    .ad-banner-item333 img {
      width: 100%;
      height: auto;
      display: block;
      border-radius: 5px;
    }

    .close-button {
      padding: 10px 20px;
      background: #FF0000;
      color: #FFFFFF;
      font-size: 14px;
      font-weight: bold;
      border: none;
      border-radius: 5px;
      cursor: pointer;
      margin-top: 20px;
    }

    .close-button:hover {
      background: #CC0000;
    }

    @media (max-width: 600px) {
      .ad-banner-item333 {
        flex: 0 0 calc(50% - 50px);
        max-width: 150px;
      }

      .ad-banner-container {
        gap: 5px;
        margin-bottom: 4px;
      }

      .close-button {
        font-size: 12px;
        padding: 8px 15px;
      }
    }
  `;
  document.head.appendChild(style);

  const adHTML = `
    <div class="ad-overlay">
      <div class="ad-banner-container">
        <div class="ad-banner-item333">
          <a href="http://lv-1070.com/" target="_blank">
            <img src="https://imtube.info/img/laba6600.gif" alt="광고 1">
          </a>
        </div>
        <div class="ad-banner-item333">
          <a href="https://bmlink24.com/" target="_blank">
            <img src="https://imtube.info/img/bambam300250.gif" alt="광고 2">
          </a>
        </div>
      </div>
      <div class="ad-banner-container">
        <div class="ad-banner-item333">
          <a href="http://nrt-5500.com/" target="_blank">
            <img src="https://imtube.info/img/narutoleb.gif" alt="광고 3">
          </a>
        </div>
        <div class="ad-banner-item333">
          <a href="https://t.me/new19size" target="_blank">
            <img src="https://imtube.info/img/guanggao.png" alt="광고 4">
          </a>
        </div>
      </div>
      <button class="close-button" onclick="this.closest('.ad-overlay').remove()">닫기</button>
    </div>
  `;

  const wrapper = document.createElement("div");
  wrapper.innerHTML = adHTML;

  const scriptTag = document.currentScript || (function () {
    const scripts = document.getElementsByTagName("script");
    return scripts[scripts.length - 1];
  })();

  scriptTag.parentNode.insertBefore(wrapper, scriptTag);
})();