body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #2E8B57; text-align: center; }
        h2 { color: #3CB371; border-bottom: 2px solid #FFD700; }
        h3 { color: #20B2AA; }
        .logo { font-size: 28px; font-weight: bold; color: #FF4500; text-shadow: 1px 1px 2px #888; }
        .mobile-nav { display: none; background: #333; color: white; padding: 10px; text-align: center; }
        .nav-links { display: flex; justify-content: space-around; background: #222; padding: 15px 0; }
        .nav-links a { color: white; text-decoration: none; }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-nav { display: block; }
        }
        .download-btn { display: block; background: #FF6347; color: white; padding: 15px; text-align: center; margin: 20px 0; border-radius: 5px; }
        .login-btn { display: block; background: #4682B4; color: white; padding: 15px; text-align: center; margin: 20px 0; border-radius: 5px; }
        img { max-width: 100%; height: auto; margin: 20px 0; }