body {
      font-family: 'Poppins', sans-serif;
      background-color: #f8f9fa;
      margin: 0;
      padding: 0;
    }
    
    /* Banner with full width background and overlay */
    header.jumbotron {
      position: relative;
      height: 768px;
      width: 100vw;
      background: url('https://static.npfs.co/accounts/6771/documents/2025/8/27/74c5e8ccc265491e9008f57b53f4532d_IauRakCampus.jpg') no-repeat center center/cover;
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      overflow: hidden;
      box-sizing: border-box;
      padding: 0 1rem;
      margin: 0;
    }

    header.jumbotron::before {
      content: "";
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background-color: rgba(17, 32, 68, 0.5);
      z-index: 0;
    }

    header.jumbotron > .container {
      position: relative;
      z-index: 1;
      max-width: 1366px;
      width: 100%;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    header.jumbotron h1 {
      font-weight: 700;
      font-size: 3rem;
      margin-bottom: 0.5rem;
    }

    header.jumbotron p.lead {
      font-weight: 400;
      font-size: 1.5rem;
      margin-bottom: 0;
    }

    /* Main container spacing */
    main.container {
      max-width: 960px;
      margin: 4rem auto 5rem;
      padding: 0 1rem;
    }

    .card {
      border: none;
      border-radius: 0.75rem;
      transition: box-shadow 0.3s ease;
      height: 100%;
    }

    .card:hover {
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    }

    .card-body {
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .card-title {
      color: #003366;
      font-weight: 700;
      font-size: 1.75rem;
      margin-bottom: 1rem;
    }

    .card-text {
      flex-grow: 1;
      color: #555;
      font-size: 1.1rem;
      margin-bottom: 1.5rem;
    }

    .btn-primary {
      background-color: #0056b3;
      border-color: #004085;
      font-weight: 600;
      font-size: 1.1rem;
      padding: 0.75rem 1.5rem;
      align-self: center; /* Center button horizontally */
      transition: background-color 0.3s ease;
      text-decoration: none;
      text-align: center;
      min-width: 180px;
    }

    .btn-primary:hover,
    .btn-primary:focus {
      background-color: #003d7a;
      border-color: #002851;
      outline: none;
      text-decoration: none;
    }

    /* Assistance section spacing */
    section.assistance {
      text-align: left;  /* align text left like reference */
      color: #333;
      margin-top: 5rem;
      margin-bottom: 6rem;
      font-size: 1.2rem;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1rem; /* indent content */
      border-left: 6px solid #112044; /* large left vertical divider */
    }

    section.assistance h4 {
      color: #003366;
      font-weight: 700;
      margin-bottom: 1rem;
      padding-left: 0.5rem;
    }

    section.assistance a {
      color: #0056b3;
      text-decoration: none;
      font-weight: 600;
      padding-left: 0.5rem;
      display: inline-block;
    }

    section.assistance a:hover {
      text-decoration: underline;
    }

    footer {
      background-color: #003366;
      color: #e0e6f2;
      padding: 1.5rem 1rem;
      text-align: center;
      font-size: 0.95rem;
      margin-bottom: 0;
    }