body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 28px; font-weight: bold; color: #FF6B35; text-decoration: none; }
        nav { background: #F8F8F8; padding: 15px; margin-bottom: 20px; }
        nav ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; }
        nav li { margin-right: 15px; }
        nav a { text-decoration: none; color: #333; }
        .mobile-toggle { display: none; }
        h1 { color: #2C3E50; border-bottom: 2px solid #FF6B35; padding-bottom: 10px; }
        h2 { color: #34495E; margin-top: 30px; }
        h3 { color: #7F8C8D; }
        .download-btn, .login-btn { background: #FF6B35; color: white; padding: 12px 25px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 15px 0; }
        .image-container { text-align: center; margin: 25px 0; }
        img { max-width: 100%; height: auto; }
        footer { margin-top: 50px; padding: 20px; background: #F8F8F8; }
        @media (max-width: 768px) {
            .mobile-toggle { display: block; background: #FF6B35; color: white; padding: 10px; cursor: pointer; }
            nav ul { display: none; }
            nav.active ul { display: block; }
            nav li { margin: 10px 0; }
        }