body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #d4af37; text-align: center; margin-bottom: 30px; }
        h2 { color: #006400; border-bottom: 2px solid #ff9933; padding-bottom: 5px; }
        h3 { color: #8b4513; }
        .nav { background: #ff9933; padding: 15px; position: sticky; top: 0; display: flex; justify-content: space-between; align-items: center; }
        .nav-links { display: flex; gap: 20px; }
        .mobile-menu { display: none; }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-menu { display: block; }
        }
        .download-btn, .login-btn { display: inline-block; padding: 10px 20px; background: #006400; color: white; text-decoration: none; margin: 10px 0; border-radius: 5px; }
        .strategy-box { background: #f0f8ff; padding: 15px; margin: 20px 0; border-left: 4px solid #d4af37; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        footer { background: #333; color: white; padding: 20px; text-align: center; margin-top: 30px; }