:root {
      --portal-text: #333333;
      --portal-muted: #666666;
      --portal-bg-light: #f7f7f7;
      --portal-bg-page: #fafafa;
      --portal-border: rgba(0, 0, 0, 0.06);
      --portal-shadow: 0 10px 28px rgba(0, 0, 0, 0.06);
    }

    body {
      font-family: Arial, Helvetica, sans-serif;
      color: var(--portal-text);
      background: var(--portal-bg-page);
      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 var(--portal-border);
      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;
    }

    /* Page title / breadcrumb */
    .portal-page-head {
      background: #f6f6f6;
      border-bottom: 1px solid rgba(0, 0, 0, 0.03);
      padding: 1.2rem 0;
    }

    .portal-page-title {
      font-size: 1.45rem;
      font-weight: 400;
      letter-spacing: 0.03em;
      margin: 0;
      color: #444444;
    }

    .portal-breadcrumb {
      margin: 0;
      justify-content: flex-end;
      font-size: 0.9rem;
    }

    .portal-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
      content: "/";
      color: #999999;
    }

    .portal-breadcrumb a {
      color: #2c7da0;
    }

    .portal-breadcrumb .active {
      color: #555555;
    }

    /* Content */
    .portal-subpage {
      background: #ffffff;
      min-height: calc(100vh - 160px);
      padding: 2.2rem 0 5rem;
    }

    .portal-content-card {
      background: #ffffff;
      border: 0;
      box-shadow: var(--portal-shadow);
      padding: 2rem;
      margin-bottom: 2rem;
    }

    .portal-content-card h2 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 1.4rem;
      color: #444444;
    }

    .portal-content-card h3 {
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 0.7rem;
      color: #444444;
    }

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

    .portal-contact-box {
      border: 1px solid rgba(0, 0, 0, 0.08);
      background: #ffffff;
      padding: 1.4rem;
      height: 100%;
      box-shadow: 0 8px 22px rgba(0, 0, 0, 0.04);
    }

    .portal-contact-icon {
      width: 42px;
      height: 42px;
      border-radius: 0.5rem;
      background: #f1f4ff;
      color: #0d6efd;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1rem;
      font-size: 1.2rem;
    }

    .portal-contact-mail {
      margin-top: 0.8rem;
      font-size: 0.9rem;
      color: #555555;
      word-break: break-word;
    }

    .portal-info-box {
      border: 1px solid rgba(0, 0, 0, 0.08);
      background: #f8f9fa;
      padding: 1rem 1.2rem;
      margin-top: 1.5rem;
      font-size: 0.95rem;
      line-height: 1.55;
    }

    .portal-address-list {
      margin: 0;
      padding: 0;
      list-style: none;
    }

    .portal-address-list li {
      border: 1px solid rgba(0, 0, 0, 0.08);
      background: #f8f9fa;
      padding: 0.9rem 1rem;
      margin-bottom: 0.8rem;
    }

    .portal-address-list small {
      display: block;
      color: #555555;
      margin-bottom: 0.25rem;
    }

    .portal-address-list strong {
      display: block;
      color: #111111;
      font-size: 0.95rem;
    }

    .portal-content-actions {
      margin-top: 1.8rem;
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }

    /* 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-breadcrumb {
        justify-content: flex-start;
        margin-top: 0.8rem;
      }
    }

    @media (max-width: 767.98px) {
      .portal-page-head {
        padding: 1rem 0;
      }

      .portal-page-title {
        font-size: 1.2rem;
      }

      .portal-subpage {
        padding: 1.5rem 0 3rem;
      }

      .portal-content-card {
        padding: 1.3rem;
      }

      .portal-contact-box {
        margin-bottom: 1rem;
      }

      .portal-footer a {
        margin-left: 0;
        margin-right: 1rem;
      }
    }