body {
      font-family: Inter, Arial, sans-serif;
      line-height: 1.6;
      margin: 0;
      background: whitesmoke;
      color: #0f1a2b;
    }

    header {
      background: #1c2e4a;
      color: whitesmoke;
      padding: 3rem 1.5rem;
      text-align: center;
    }

    header h1 {
      margin-bottom: 0.5rem;
      font-size: 2.2rem;
    }

    header p {
      max-width: 800px;
      margin: 0 auto;
      font-size: 1.1rem;
      opacity: 0.9;
    }

    main {
      max-width: 1100px;
      margin: 3rem auto;
      padding: 0 1.5rem;
    }

    section {
      margin-bottom: 3.5rem;
    }

    h2 {
      font-size: 1.6rem;
      margin-bottom: 1rem;
      border-left: 4px solid #52677d;
      padding-left: 0.75rem;
      color: #1c2e4a;
    }

    .iframe-container {
      position: relative;
      width: 100%;
      padding-bottom: 56.25%;
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 10px 30px rgba(0,0,0,0.15);
      background: #000;
    }

    .iframe-container iframe {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      border: none;
    }

    .info-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
      gap: 1.5rem;
      margin-top: 1.5rem;
    }

    .info-box {
      background: white;
      padding: 1.5rem;
      border-radius: 10px;
      box-shadow: 0 6px 18px rgba(0,0,0,0.08);
    }

    footer {
      text-align: center;
      padding: 2rem 1rem;
      background: #0f1a2b;
      color: #bdc4d4;
      font-size: 0.9rem;
    }

    footer span {
      color: #1e3c72;
      font-weight: 500;
    }