body {
      margin: 0;
      font-family: Arial, sans-serif;
    }
    nav {
      background: black;
      color: white;
      padding: 16px 24px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: sticky;
      top: 0;
      z-index: 50;
    }
    nav img {
      width: 160px;
      cursor: pointer;
    }
    ul {
      list-style: none;
      margin: 0;
      padding: 0;
      display: flex;
      gap: 24px;
    }
    ul li {
      position: relative;
    }
    ul li a {
      color: white;
      text-decoration: none;
      transition: color 0.3s;
    }
    ul li a:hover {
      color: purple;
    }

    /* Dropdown */
    .dropdown {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      background: black;
      border-radius: 6px;
      min-width: 160px;
    }
    .dropdown li a {
      display: block;
      padding: 8px 12px;
    }
    .dropdown li a:hover {
      background: purple;
      border-radius: 6px;
      color: white;
    }
    li:hover > .dropdown {
      display: block;
    }

    /* Call Button */
    .call-btn {
      background: purple;
      color: white;
      padding: 8px 16px;
      border-radius: 6px;
      text-decoration: none;
      transition: background 0.3s;
    }
    .call-btn:hover {
      background: rgb(100, 0, 100);
    }

    /* Mobile */
    .menu-btn {
      display: none;
      font-size: 26px;
      cursor: pointer;
    }
    .mobile-sidebar {
      display: none;
      position: fixed;
      inset: 0;
      background: rgba(0,0,0,0.9);
      z-index: 999;
    }
    .sidebar-content {
      position: absolute;
      right: 0;
      top: 0;
      width: 260px;
      height: 100%;
      background: black;
      color: white;
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .sidebar-content a {
      color: white;
      text-decoration: none;
      transition: color 0.3s;
    }
    .sidebar-dropdown {
      margin-left: 12px;
      display: none;
      flex-direction: column;
      gap: 8px;
    }
    .show {
      display: flex !important;
    }

    @media (max-width: 768px) {
      .desktop-menu, .call-btn {
        display: none;
      }
      .menu-btn {
        display: block;
      }
    }