body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .mobile-nav { display: none; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-nav { display: block; }
            body { padding: 10px; }
        }
        nav { background: linear-gradient(to right, #ff9933, #138808); padding: 15px; border-radius: 8px; margin-bottom: 20px; }
        nav a { color: white; text-decoration: none; padding: 10px 15px; font-weight: bold; }
        h1 { color: #ff9933; border-bottom: 3px solid #138808; padding-bottom: 10px; }
        h2 { color: #138808; margin-top: 30px; }
        h3 { color: #ff9933; }
        .download-btn, .login-btn { background: #138808; color: white; padding: 12px 25px; border-radius: 25px; text-decoration: none; font-weight: bold; display: inline-block; margin: 15px 0; }
        .img-container { text-align: center; margin: 25px 0; }
        img { max-width: 100%; height: auto; border-radius: 8px; }
        .tag { background: #ffeb3b; padding: 3px 8px; border-radius: 12px; margin: 5px; display: inline-block; }
        footer { margin-top: 50px; padding-top: 20px; border-top: 2px solid #eee; }