body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .mobile-nav { display: none; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-nav { display: block; position: fixed; bottom: 0; width: 100%; background: #ff6b35; color: white; padding: 10px; text-align: center; }
            .logo { font-size: 24px; }
        }
        h1 { color: #ff6b35; text-align: center; }
        h2 { color: #ff8c42; border-bottom: 2px solid #ff6b35; padding-bottom: 5px; }
        h3 { color: #ff9e5e; }
        .download-btn, .login-btn { display: inline-block; background: #ff6b35; color: white; padding: 10px 20px; margin: 10px 0; border-radius: 5px; text-decoration: none; }
        .strategy-box { background: #f9f9f9; padding: 15px; margin: 15px 0; border-left: 4px solid #ff6b35; }
        img { max-width: 100%; height: auto; margin: 20px 0; }