body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #FF6B35; text-align: center; margin-bottom: 30px; }
        h2 { color: #00A8E8; border-bottom: 2px solid #FFD166; padding-bottom: 5px; }
        h3 { color: #06D6A0; }
        .logo { font-size: 28px; font-weight: bold; color: #FF6B35; text-shadow: 2px 2px 4px rgba(0,0,0,0.1); }
        .nav { display: flex; justify-content: space-between; background: #FFF9C4; padding: 15px; margin-bottom: 30px; }
        .nav-mobile { display: none; }
        .button { background: #00A8E8; color: white; padding: 10px 15px; border-radius: 5px; text-decoration: none; }
        .download-btn { display: inline-block; margin: 20px 0; }
        .login-btn { display: inline-block; margin: 20px 10px; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .footer { background: #333; color: white; padding: 20px; text-align: center; margin-top: 50px; }
        @media (max-width: 768px) {
            .nav { flex-direction: column; }
            .nav-desktop { display: none; }
            .nav-mobile { display: block; text-align: center; margin-bottom: 15px; }
        }