:root {
      --portal-primary: #d8bd24;
      --portal-primary-dark: #b59b16;
      --portal-text: #333333;
      --portal-muted: #666666;
      --portal-bg-light: #f7faf8;
    }

    body {
      font-family: Arial, Helvetica, sans-serif;
      color: var(--portal-text);
      background: #ffffff;
      margin: 0;
      padding: 0;
    }

    a {
      color: #2c7da0;
      text-decoration: none;
    }

    a:hover {
      color: #1f5f78;
      text-decoration: underline;
    }

    /* Header */
    .portal-header {
      background: #ffffff;
      min-height: 72px;
      border-bottom: 1px solid rgba(0, 0, 0, 0.06);
      position: relative;
      z-index: 10;
    }

    .portal-logo {
      height: 80px;
      width: auto;
      object-fit: contain;
    }

    .portal-brand-text {
      font-size: 0.85rem;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: #333333;
      line-height: 1;
      margin-top: 4px;
      text-align: center;
    }

    .navbar-nav .nav-link {
      color: #333333;
      font-size: 0.95rem;
      padding: 0.7rem 1rem;
    }

    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active {
      color: #000000;
    }

    .portal-nav-button {
      color: #ffffff !important;
      padding: 0.25rem 0.7rem !important;
      margin-top: 0.45rem;
      margin-bottom: 0.45rem;
    }

    .portal-nav-button:hover {
      color: #ffffff !important;
      text-decoration: none;
    }

    /* Hero */
    .portal-hero {
      min-height: 530px;
      background:
        linear-gradient(
          rgba(0, 0, 0, 0.58),
          rgba(0, 0, 0, 0.58)
        ),
        url("img/trinkwasser-hero.jpg");
      background-size: cover;
      background-position: center;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      color: #ffffff;
      padding: 4rem 1rem;
    }

    .portal-hero h1 {
      font-size: clamp(2rem, 4vw, 4rem);
      font-weight: 300;
      letter-spacing: 0.05em;
      line-height: 1.25;
      margin-bottom: 1.4rem;
    }

    .portal-hero .subtitle {
      font-size: clamp(1rem, 1.5vw, 1.35rem);
      font-weight: 300;
      margin-bottom: 2rem;
    }

    .portal-btn-primary {
      background: var(--portal-primary);
      border: 1px solid var(--portal-primary);
      color: #000000;
      border-radius: 0;
      padding: 0.75rem 2rem;
      font-size: 1rem;
      letter-spacing: 0.08em;
    }

    .portal-btn-primary:hover {
      background: var(--portal-primary-dark);
      border-color: var(--portal-primary-dark);
      color: #000000;
      text-decoration: none;
    }

    /* Content */
    .portal-main {
      background: var(--portal-bg-light);
      padding: 2.2rem 0 3.5rem;
    }

    .portal-intro {
      /*max-width: 980px;
      margin: 0 auto 2.4rem;*/
      font-size: 1rem;
      line-height: 1.6;
    }

    .portal-card {
      height: 100%;
      background: transparent;
      border: 0;
      border-radius: 0;
      padding: 0;
    }

    .portal-card h2 {
      font-size: 1.15rem;
      font-weight: 700;
      margin-bottom: 1rem;
      color: #333333;
    }

    .portal-card p {
      font-size: 0.95rem;
      line-height: 1.65;
      color: #4a4a4a;
      margin-bottom: 1rem;
    }

    .portal-card .btn {
      margin-top: 1rem;
    }

    .portal-card .btn:hover {
      text-decoration: none;
    }

    /* Footer */
    .portal-footer {
      background: #ffffff;
      border-top: 1px solid rgba(0, 0, 0, 0.08);
      padding: 1.5rem 0;
      color: #666666;
      font-size: 0.9rem;
    }

    .portal-footer a {
      color: #555555;
      margin-left: 1rem;
    }

    @media (max-width: 991.98px) {
      .portal-header {
        min-height: auto;
      }

      .portal-logo-wrap {
        text-align: left !important;
      }

      .portal-brand-text {
        text-align: left;
      }

      .portal-nav-button {
        display: inline-block;
        margin-top: 0.5rem;
        margin-bottom: 0.5rem;
      }

      .portal-hero {
        min-height: 360px;
      }
    }

    @media (max-width: 767.98px) {
      .portal-main {
        padding-top: 1.6rem;
      }

      .portal-card {
        margin-bottom: 2rem;
      }
    }


.navbar-nav .nav-link.nav-intern {
  background: #eef6ff;
  color: #0d6efd;
  border: 1px solid rgba(13, 110, 253, 0.25);
  border-radius: 999px;
  padding: 0.28rem 0.85rem;
  margin-top: 0.42rem;
  margin-bottom: 0.42rem;
  font-weight: 600;
}

.navbar-nav .nav-link.nav-intern:hover,
.navbar-nav .nav-link.nav-intern.active {
  background: #0d6efd;
  color: #ffffff;
  border-color: #0d6efd;
  text-decoration: none;
}