body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #0a5; font-size: 2.5em; text-align: center; margin-bottom: 30px; }
        h2 { color: #07a; font-size: 1.8em; border-bottom: 2px solid #07a; padding-bottom: 5px; margin-top: 40px; }
        h3 { color: #05c; font-size: 1.4em; margin-top: 25px; }
        .logo { font-size: 2.8em; font-weight: bold; color: #0a5; text-align: center; margin: 20px 0; }
        .nav { background: #0a5; color: white; padding: 15px; display: flex; justify-content: space-between; align-items: center; }
        .nav a { color: white; text-decoration: none; margin: 0 10px; }
        .mobile-menu { display: none; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; }
            .desktop-nav { display: none; }
            .mobile-menu { display: block; margin-top: 10px; }
        }
        .download-btn { display: block; background: #0a5; color: white; padding: 15px; text-align: center; margin: 20px 0; border-radius: 5px; text-decoration: none; font-weight: bold; }
        .login-btn { display: block; background: #07a; color: white; padding: 15px; text-align: center; margin: 20px 0; border-radius: 5px; text-decoration: none; font-weight: bold; }
        img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 8px; }
        .tags { margin: 20px 0; }
        .tag { background: #eee; padding: 5px 10px; border-radius: 15px; margin: 5px; display: inline-block; }
        .footer { margin-top: 50px; padding: 20px; background: #f5f5f5; text-align: center; }