body {
      margin: 0;
      font-family: 'Inter', sans-serif;
      background: #f5f7fa;
      color: #333;
    }

    header {
      background: #004080;
      color: white;
      padding: 2rem 1rem;
      text-align: center;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    }

    header h1 {
      margin: 0;
      font-size: 2.5rem;
      animation: fadeInDown 1s ease-out;
    }

    header p {
      margin-top: 0.5rem;
      font-size: 1.2rem;
      opacity: 0.9;
    }

    main {
      max-width: 900px;
      margin: 2rem auto;
      padding: 0 1rem;
      text-align: center;
    }

    iframe {
      width: 100%;
      height: 600px;
      border: none;
      border-radius: 12px;
      box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
      transition: transform 0.3s ease;
    }

    iframe:hover {
      transform: scale(1.01);
    }

    .accordion {
      margin-top: 2rem;
      text-align: left;
    }

    .accordion-item {
      background: white;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      margin-bottom: 1rem;
      overflow: hidden;
    }

    .accordion-header {
      padding: 1rem;
      cursor: pointer;
      background: #eaf0f8;
      font-weight: bold;
      transition: background 0.3s;
    }

    .accordion-header:hover {
      background: #d6e4f0;
    }

    .accordion-content {
      max-height: 0;
      overflow: hidden;
      padding: 0 1rem;
      background: #f9fbfd;
      transition: max-height 0.4s ease;
    }

    .accordion-content p {
      margin: 1rem 0;
    }

    .accordion-item.active .accordion-content {
      max-height: 200px;
    }

    footer {
      margin-top: 3rem;
      text-align: center;
      padding: 1.5rem;
      background: #004080;
      color: white;
      font-size: 0.9rem;
    }

    @media (max-width: 600px) {
      iframe {
        height: 500px;
      }

      header h1 {
        font-size: 2rem;
      }
    }

    @keyframes fadeInDown {
      from {
        opacity: 0;
        transform: translateY(-20px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }