body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #FF6600; border-bottom: 3px solid #FF9933; padding-bottom: 10px; }
        h2 { color: #0066CC; margin-top: 30px; }
        h3 { color: #339966; }
        .download-btn, .login-btn { 
            display: inline-block; padding: 12px 25px; margin: 15px 0; 
            background: #FF6600; color: white; border-radius: 5px; 
            text-decoration: none; font-weight: bold; 
        }
        .logo { font-size: 28px; font-weight: 900; color: #FF4500; letter-spacing: 2px; }
        nav { background: #f8f8f8; padding: 15px; margin-bottom: 20px; }
        nav a { margin-right: 15px; text-decoration: none; color: #0066CC; }
        .mobile-menu { display: none; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-menu { display: block; }
            body { padding: 10px; }
        }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .tags { margin: 20px 0; }
        .tag { background: #e0e0e0; padding: 5px 10px; margin: 5px; display: inline-block; }
        footer { margin-top: 40px; padding: 20px; background: #f0f0f0; }