*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    body {
      font-family: 'Segoe UI', Arial, sans-serif;
      font-size: 15px;
      background: #f4f6f8;
    }

    nav.main-nav {
      background: #1a3a5c;
      position: relative;
      z-index: 1000;
    }

    nav.main-nav > ul {
      list-style: none;
      display: flex;
      flex-wrap: wrap;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0;
    }

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

    nav.main-nav > ul > li > button {
      display: flex;
      align-items: center;
      gap: 6px;
      padding: 16px 18px;
      color: #ffffff;
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.02em;
      background: none;
      border: none;
      cursor: pointer;
      white-space: nowrap;
      transition: background 0.2s;
    }

    nav.main-nav > ul > li > button:hover,
    nav.main-nav > ul > li.open > button {
      background: #255080;
    }

    nav.main-nav > ul > li > button::after {
      content: '▾';
      font-size: 11px;
      opacity: 0.75;
      transition: transform 0.25s;
    }

    nav.main-nav > ul > li.open > button::after {
      transform: rotate(180deg);
    }

    /* Dropdowns: standardmäßig ausgeblendet – zusätzlich per JS gesichert */
    .dropdown {
      display: none;
      position: absolute;
      top: 100%;
      left: 0;
      min-width: 300px;
      background: #ffffff;
      border-top: 3px solid #e8a020;
      box-shadow: 0 6px 20px rgba(0,0,0,0.15);
      z-index: 999;
      list-style: none;
    }

    .dropdown li a {
      display: block;
      padding: 11px 20px;
      color: #1a3a5c;
      text-decoration: none;
      font-size: 14px;
      border-bottom: 1px solid #eef0f3;
      transition: background 0.15s, padding-left 0.15s;
    }

    .dropdown li:last-child a {
      border-bottom: none;
    }

    .dropdown li a:hover {
      background: #eef4fb;
      padding-left: 26px;
      color: #e8a020;
    }

    /* Mobile */
    .nav-toggle {
      display: none;
      background: #1a3a5c;
      border: none;
      color: white;
      font-size: 26px;
      padding: 12px 18px;
      cursor: pointer;
      width: 100%;
      text-align: left;
    }

    @media (max-width: 900px) {
      .nav-toggle { display: block; }

      nav.main-nav > ul {
        display: none;
        flex-direction: column;
      }

      nav.main-nav.mobile-open > ul {
        display: flex;
      }

      nav.main-nav > ul > li > button {
        width: 100%;
        padding: 14px 18px;
        justify-content: space-between;
      }

      .dropdown {
        position: static;
        box-shadow: none;
        border-top: none;
        border-left: 4px solid #e8a020;
        background: #f0f4f9;
        min-width: unset;
        width: 100%;
      }
    }