body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 30px; }
        .logo { font-size: 28px; font-weight: 900; color: #0078d7; text-transform: uppercase; letter-spacing: 1px; }
        nav ul { display: flex; gap: 20px; list-style: none; }
        nav a { text-decoration: none; color: #0078d7; font-weight: 600; }
        .mobile-menu { display: none; background: #0078d7; color: white; padding: 10px; border-radius: 5px; }
        h1 { color: #003366; border-bottom: 3px solid #ff9900; padding-bottom: 10px; }
        h2 { color: #0056b3; margin-top: 30px; }
        h3 { color: #3399ff; }
        .download-btn { display: inline-block; background: #ff9900; color: white; padding: 12px 25px; margin: 15px 0; border-radius: 8px; text-decoration: none; font-weight: bold; }
        .login-btn { display: inline-block; background: #0078d7; color: white; padding: 12px 25px; margin: 15px 0; border-radius: 8px; text-decoration: none; font-weight: bold; }
        img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 10px; }
        footer { margin-top: 50px; padding-top: 30px; border-top: 2px solid #eee; }
        .tags { margin: 20px 0; }
        .tag { background: #e0e0e0; padding: 5px 10px; margin: 3px; display: inline-block; border-radius: 15px; }
        @media (max-width: 768px) {
            nav { display: none; }
            .mobile-menu { display: block; }
            .show-nav { display: flex; flex-direction: column; }
            body { padding: 10px; }
        }