body {
      margin: 0;
      font-family: Arial, sans-serif;
      background: #f8f8f8;
      color: #222;
    }

    header {
      background: #ffffff;
      padding: 20px;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    }

    header img {
      max-width: 220px;
      height: auto;
    }

    main {
      max-width: 900px;
      margin: 40px auto;
      padding: 20px;
      background: #ffffff;
      border-radius: 12px;
      box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    }

    h1 {
      margin-top: 0;
    }

    p {
      line-height: 1.6;
    }