:root {
      color-scheme: light dark;

      --primary: #1a1a1a;
      --accent: #2d6cdf;
      --bg: #f7f9fc;
      --card: #ffffff;
      --text: #333;
      --muted: #666;
    }

    @media (prefers-color-scheme: dark) {
      :root {
        --primary: #f1f1f1;
        --accent: #6ea8ff;
        --bg: #121212;
        --card: #1e1e1e;
        --text: #e4e4e4;
        --muted: #aaa;
      }
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: "Public Sans", Roboto, Helvetica, Arial, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.6;
      padding: 20px;
      transition: background 0.3s, color 0.3s;
    }

    header {
      margin-bottom: 30px;
    }

    h1, h2 {
      font-family: "DSans", sans-serif;
      color: var(--primary);
      margin-bottom: 10px;
    }

    h1 {
      font-size: 2rem;
    }

    h2 {
      font-size: 1.4rem;
      margin-top: 20px;
    }

    main {
      max-width: 800px;
      margin: 0 auto;
    }

    section {
      background: var(--card);
      padding: 20px;
      border-radius: 10px;
      margin-bottom: 20px;
      box-shadow: 0 4px 10px rgba(0,0,0,0.05);
      transition: background 0.3s;
    }

    p {
      margin-bottom: 10px;
    }

    .label {
      font-weight: 600;
      color: var(--primary);
    }

    .muted {
      color: var(--muted);
      font-size: 0.9rem;
    }

    .note {
      font-style: italic;
      font-weight: 300;
      color: var(--muted);
      margin-left: 5px;
    }

    a {
      color: var(--accent);
      text-decoration: none;
    }

    a:hover {
      text-decoration: underline;
    }

    footer {
      text-align: center;
      margin-top: 30px;
      font-size: 0.9rem;
      color: var(--muted);
    }