body { font-family: 'Arial', sans-serif; line-height: 1.6; margin: 0; padding: 0; color: #333; background-color: #f4f4f4; }
        .container { max-width: 1200px; margin: 0 auto; padding: 20px; }
        header { background-color: #ff6b35; color: white; padding: 20px; text-align: center; position: relative; }
        header h1 { margin: 0; font-size: 2.5em; }
        nav { display: flex; justify-content: center; gap: 20px; margin-top: 10px; }
        nav a { color: white; text-decoration: none; font-weight: bold; }
        .mobile-menu-btn { display: none; position: absolute; right: 20px; top: 20px; background: none; border: none; color: white; font-size: 1.5em; cursor: pointer; }
        @media (max-width: 768px) {
            nav { display: none; flex-direction: column; align-items: center; }
            nav.active { display: flex; }
            .mobile-menu-btn { display: block; }
        }
        h1, h2, h3 { color: #2c3e50; }
        h1 { font-size: 2em; }
        h2 { font-size: 1.7em; margin-top: 30px; }
        h3 { font-size: 1.4em; margin-top: 20px; }
        .download-btn, .login-btn { display: inline-block; padding: 10px 20px; margin: 10px 0; background-color: #2ecc71; color: white; text-decoration: none; border-radius: 5px; font-weight: bold; }
        .login-btn { background-color: #3498db; }
        img { max-width: 100%; height: auto; display: block; margin: 20px auto; }
        footer { background-color: #2c3e50; color: white; text-align: center; padding: 20px; margin-top: 30px; }
        .tags { margin: 20px 0; }
        .tags a { color: #ff6b35; text-decoration: none; margin: 0 5px; }