* {
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f7f7f2;
    color: #111;
  }
  
  .site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 40px;
  }
  
  .site-header nav a {
    margin-left: 20px;
    text-decoration: none;
    color: #111;
  }
  
  .brand {
    font-weight: 700;
    font-size: 1.2rem;
  }
  
  .hero {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
  }
  
  .hero-card {
    max-width: 680px;
    text-align: center;
    background: white;
    padding: 48px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  }
  
  .eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.8rem;
    color: #666;
  }
  
  h1 {
    font-size: 4rem;
    margin: 12px 0;
  }
  
  .subtitle {
    font-size: 1.1rem;
    color: #444;
    margin-bottom: 24px;
  }
  
  button {
    border: none;
    background: #111;
    color: white;
    padding: 14px 20px;
    border-radius: 999px;
    cursor: pointer;
    font-size: 1rem;
  }
  
  button:hover {
    opacity: 0.9;
  }
  
  #message {
    margin-top: 16px;
    color: #444;
  }