:root {
    --bg: #ffffff;
    --text: #111111;
    --accent: #555555;
    --border: #dddddd;
  }
 
  @media (prefers-color-scheme: dark) {
    :root {
      --bg: #121212;
      --text: #f5f5f5;
      --accent: #aaaaaa;
      --border: #333333;
    }
  }
 
  * {
    box-sizing: border-box;
  }

body {
  min-height:100dvh;
}
 
  main {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    padding: 24px;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: calc(100dvh - 60px);
  }
 
  .container {
    text-align: center;
    max-width: 420px;
  }
 
  .code {
    font-size: clamp(4rem, 15vw, 7rem);
    font-weight: 700;
    margin: 0;
    line-height: 1;
    letter-spacing: -2px;
  }
 
  .title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 16px 0 8px;
  }
 
  .message {
    font-size: 1rem;
    color: var(--accent);
    margin: 0 0 32px;
    line-height: 1.5;
  }
 
  .home-link {
    display: inline-block;
    padding: 10px 24px;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    text-decoration: none;
    font-size: 0.95rem;
    transition: border-color 0.2s ease, background-color 0.2s ease;
  }
 
  .home-link:hover {
    background-color: var(--border);
  }