body { font-family: 'Arial', 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; background: #FF6B35; color: white; padding: 10px; text-align: center; }
            .mobile-nav button { background: none; border: none; color: white; font-size: 18px; }
            .nav-content { display: none; }
            .nav-content.active { display: block; }
        }
        .logo { font-size: 28px; font-weight: bold; color: #FF6B35; text-transform: uppercase; }
        nav { background: #F7F7F7; padding: 15px; margin-bottom: 30px; }
        nav a { margin: 0 15px; text-decoration: none; color: #333; font-weight: 500; }
        h1 { color: #FF6B35; font-size: 32px; }
        h2 { color: #2C3E50; margin-top: 40px; }
        h3 { color: #3498DB; }
        .download-btn, .login-btn { background: #FF6B35; color: white; padding: 12px 25px; border-radius: 5px; margin: 20px 0; display: inline-block; text-decoration: none; }
        .img-container { text-align: center; margin: 30px 0; }
        img { max-width: 100%; height: auto; }
        .tags { margin: 30px 0; }
        .tag { background: #E0E0E0; padding: 5px 10px; margin: 5px; display: inline-block; border-radius: 3px; }
        footer { background: #2C3E50; color: white; padding: 20px; text-align: center; margin-top: 50px; }