* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", sans-serif;
  }
  
  body {
    background-color: #f4f7fb;
    color: #333;
    padding: 0;
    margin: 0;
  }
  
  /* Header */
  .header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #e0ecf8;
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  }
  
  .logo img {
    height: 40px;
  }
  
  .nav a {
    margin-left: 1.5rem;
    text-decoration: none;
    color: #005f99;
    font-weight: 500;
    transition: color 0.2s;
  }
  
  .nav a:hover {
    color: #007acc;
  }
  
  /* Main */
  .main {
    padding: 2rem;
    text-align: center;
  }
  
  .intro {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: #444;
  }
  
  /* Buttons */
  .button-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    max-width: 800px;
    margin: 0 auto;
  }
  
  .wide-button {
    display: block;
    background: #007acc;
    color: white;
    text-decoration: none;
    padding: 1rem;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: bold;
    transition: background 0.2s;
  }
  
  .wide-button:hover {
    background: #005f99;
  }


  .iframe-wrapper {
      width: 100%;
      max-width: 1000px;
      height: 700px;
      margin: 40px auto;
      overflow: hidden;
      border-radius: 12px;
      box-shadow: 0 0 10px rgba(0,0,0,0.2);
      position: relative;
    }

    .iframe-wrapper iframe {
      width: 1200px;
      height: 1200px;
      border: none;
      position: absolute;
      top: -180px;   /* shift up to center on the editor */
      left: -100px;  /* shift left to hide sidebar */
      transform: scale(1);
    }