body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            background-color: #111;
            color: #ddd;
            line-height: 1.6;
            padding: 40px 20px;
            max-width: 800px;
            margin: 0 auto;
        }
        h1, h2, h3 { color: #fff; }
        h1 { border-bottom: 1px solid #333; padding-bottom: 10px; margin-bottom: 30px; }
        a { color: #007aff; text-decoration: none; }
        a:hover { text-decoration: underline; }
        .back-btn { display: inline-block; margin-bottom: 20px; color: #aaa; font-size: 14px; }
        .contact-box { background: #222; padding: 20px; border-radius: 8px; border: 1px solid #333; margin-top: 20px; }