body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; margin: 0; padding: 0; background: #f9f9f9; }
        .container { max-width: 1200px; margin: 0 auto; padding: 20px; }
        .header { background: #ff6b35; color: white; padding: 15px; text-align: center; position: relative; }
        .header h1 { margin: 0; font-size: 28px; }
        .nav { background: #e74c3c; padding: 10px; display: flex; justify-content: center; flex-wrap: wrap; }
        .nav a { color: white; padding: 10px 15px; text-decoration: none; }
        .mobile-nav-toggle { display: none; position: absolute; right: 10px; top: 10px; background: #c0392b; color: white; border: none; padding: 5px 10px; }
        h1, h2, h3 { color: #e74c3c; }
        h1 { font-size: 2.5em; }
        h2 { font-size: 1.8em; margin-top: 30px; }
        h3 { font-size: 1.5em; margin-top: 25px; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .download-btn { background: #2ecc71; color: white; padding: 12px 25px; text-decoration: none; border-radius: 5px; display: inline-block; margin: 10px 0; }
        .login-btn { background: #3498db; color: white; padding: 12px 25px; text-decoration: none; border-radius: 5px; display: inline-block; margin: 10px 0; }
        .tags { margin: 20px 0; }
        .tag { background: #95a5a6; color: white; padding: 5px 10px; border-radius: 3px; margin: 5px; display: inline-block; }
        .footer { background: #34495e; color: white; text-align: center; padding: 20px; margin-top: 30px; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; }
            .mobile-nav-toggle { display: block; }
            .nav.active { display: block; }
            .nav { display: none; }
        }