(function() {
  var css = document.createElement('style');
  css.textContent = `
    #wello-blog-btn {
      position: fixed;
      bottom: 20px;
      left: 20px;
      padding: 12px 24px;
      border-radius: 6px;
      background: #1a3c8f;
      color: #fff;
      border: none;
      cursor: pointer;
      font-size: 14px;
      font-weight: 600;
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      box-shadow: 0 2px 8px rgba(26, 60, 143, 0.3);
      z-index: 99998;
      transition: all 0.2s ease;
      display: flex;
      align-items: center;
      gap: 8px;
      text-decoration: none;
    }
    #wello-blog-btn:hover {
      background: #153170;
      box-shadow: 0 4px 12px rgba(26, 60, 143, 0.4);
      transform: translateY(-2px);
    }
    #wello-blog-btn:active {
      transform: translateY(0);
    }
    @media (max-width: 768px) {
      #wello-blog-btn {
        bottom: 90px;
        padding: 10px 18px;
        font-size: 13px;
      }
    }
  `;
  document.head.appendChild(css);
  
  var btn = document.createElement('a');
  btn.id = 'wello-blog-btn';
  btn.href = '/blog.html';
  btn.innerHTML = '📚 Блог';
  btn.title = 'Экспертные статьи';
  
  document.body.appendChild(btn);
})();