.site-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 25px;
      border-bottom: 1px solid #ddd;
      position: sticky;
      top: 0;
      background: #fff;
      z-index: 1000;
    }

    /* Logo */
    .site-logo a {
      font-family: "Sarabun", sans-serif;
      display: flex;
      align-items: center;
      font-size: 32px;
      font-weight: bold;
      color: #65b530;
      text-decoration: none;
    }

    .site-logo a span {
      color: #000;
      margin-left: 5px;
    }

    /* Navigation */
    .main-nav ul {
      list-style: none;
      display: flex;
      gap: 20px;
      margin: 0;
      padding: 0;
    }

    .main-nav ul li {
      position: relative;
    }

    .main-nav ul li a {
      font-family: "Sarabun", sans-serif;
      font-size: 16px;
      text-decoration: none;
      color: #000;
      font-weight: 600;
      padding: 6px;
      display: block;
    }

    .main-nav ul li a:hover,
    .main-nav ul li a.active {
      color: #65b530;
    }

    /* Dropdown */
    .main-nav ul li ul {
      display: none;
      position: absolute;
      top: 35px;
      left: 0;
      background: #fff;
      border: 1px solid #ddd;
      min-width: 180px;
      margin: 0;
      padding: 0;
      list-style: none;
      z-index: 1000;
    }

    /* Desktop hover */
    @media (min-width: 961px) {
      .main-nav ul li:hover > ul {
        display: block;
      }
    }

    .main-nav ul li ul li a {
      font-family: "Sarabun", sans-serif;
      padding: 10px 15px;
      font-size: 16px;
      color: #333;
      display: block;
      text-decoration: none;
    }

    .main-nav ul li ul li a:hover {
      background: #f4f4f4;
      color: #65b530;
    }

    /* Contact info */
    .header-contact {
      display: flex;
      gap: 30px;
      align-items: center;
    }

    .header-contact .fa-phone,
    .header-contact .fa-envelope {
      font-size: 24px;
      color: #65b530;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 10px;
    }

    .contact-text {
      display: flex;
      flex-direction: column;
      gap: 5px;
    }

    .contact-text h4 {
      font-family: "Sarabun", sans-serif;
      margin: 0 !important;
      font-size: 16px;
      color: #666;
      font-weight: normal;
    }

    .contact-text h3 {
      font-family: "Sarabun", sans-serif;
      margin: 0;
      font-weight: bold;
      color: #000;
      font-size: 14px;
    }

    .contact-text h3 a {
      text-decoration: none;
      color: #000;
    }

    /* Hamburger */
    .menu-toggle {
      display: none;
      flex-direction: column;
      cursor: pointer;
    }

    .menu-toggle span {
      height: 3px;
      width: 25px;
      background: #333;
      margin: 4px 0;
      border-radius: 5px;
    }

    @media only screen and (max-width:1400px) {
      .site-logo a {
        font-size: 22px;
      }
    }

    /* Mobile */
    @media (max-width: 960px) {
      .main-nav ul {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: #fff;
        padding: 20px;
        border-top: 1px solid #ddd;
      }

      .main-nav ul.show {
        display: flex;
      }

      .main-nav ul li ul {
        position: static;
        border: none;
        background: #f9f9f9;
        display: none;
      }

      .main-nav ul li.show-sub > ul {
        gap: 3px;
        display: flex;
        flex-direction: column;
      }

      .menu-toggle {
        display: flex;
      }

      .header-contact {
        display: none;
      }
    }