body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 28px; font-weight: bold; color: #ff6b35; text-shadow: 1px 1px 2px #000; margin: 20px 0; }
        nav { background: #2c3e50; padding: 15px; border-radius: 8px; margin-bottom: 25px; }
        nav a { color: white; text-decoration: none; margin: 0 15px; font-weight: bold; }
        .mobile-toggle { display: none; }
        h1 { color: #e74c3c; border-bottom: 3px solid #3498db; padding-bottom: 10px; }
        h2 { color: #2980b9; margin-top: 30px; }
        h3 { color: #27ae60; }
        .download-btn, .login-btn { background: #2ecc71; color: white; padding: 12px 25px; border-radius: 5px; text-decoration: none; font-weight: bold; display: inline-block; margin: 15px 0; }
        .login-btn { background: #3498db; }
        img { max-width: 100%; height: auto; margin: 20px 0; border-radius: 8px; }
        .footer { margin-top: 50px; padding-top: 20px; border-top: 2px solid #eee; }
        .tag { background: #95a5a6; color: white; padding: 5px 10px; border-radius: 3px; margin: 5px; display: inline-block; }
        @media (max-width: 768px) {
            nav { padding: 10px; }
            nav a { display: block; margin: 5px 0; }
            .mobile-toggle { display: block; background: #3498db; color: white; padding: 10px; text-align: center; cursor: pointer; }
            .nav-links { display: none; }
        }