body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1, h2, h3 { color: #e74c3c; margin-top: 30px; }
        h1 { font-size: 2.5em; }
        h2 { font-size: 1.8em; }
        h3 { font-size: 1.4em; }
        .logo { font-size: 2em; font-weight: bold; color: #e74c3c; text-shadow: 2px 2px 4px rgba(0,0,0,0.1); }
        .nav { display: flex; justify-content: space-between; background: #f8f9fa; padding: 15px; border-radius: 5px; margin-bottom: 20px; }
        .nav-mobile { display: none; background: #f8f9fa; padding: 10px; text-align: center; }
        .btn { background: #e74c3c; color: white; padding: 10px 20px; border-radius: 5px; text-decoration: none; margin: 10px 0; display: inline-block; }
        .download-btn { background: #2ecc71; }
        .login-btn { background: #3498db; }
        img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 8px; }
        .tags { margin: 20px 0; }
        .tag { background: #f1f1f1; padding: 5px 10px; border-radius: 15px; margin-right: 5px; display: inline-block; }
        .footer { margin-top: 50px; padding: 20px; background: #f8f9fa; border-radius: 5px; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; }
            .nav-desktop { display: none; }
            .nav-mobile { display: block; }
        }