:root {
            --azul-atomy: #0066cc;
            --azul-claro: #e6f2ff;
            --branco: #ffffff;
        }
        
        body {
            font-family: 'Arial', sans-serif;
            margin: 0;
            padding: 0;
            color: #333;
            background-color: var(--branco);
            line-height: 1.6;
        }
        
        header {
            background-color: var(--azul-atomy);
            color: var(--branco);
            padding: 30px 0;
            text-align: center;
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 30px;
        }
        
        .nav-links a {
            text-decoration: none;
            color: white;
            font-weight: 500;
            transition: color 0.3s;
        }
        
        .nav-links a:hover {
            color: #bbdefb;
        }
        
        
        .logo {
            font-size: 2.5rem;
            font-weight: bold;
            margin-bottom: 10px;
        }
        
        .slogan {
            font-size: 1.2rem;
            opacity: 0.9;
        }
        
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 30px 0;
        }
        
        .hero {
            background-color: var(--azul-claro);
            padding: 50px 0;
            text-align: center;
        }
        
        .hero-image {
            max-width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            margin: 20px 0;
        }
        
        .intro {
            text-align: center;
            margin: 50px 0;
        }
        
        .intro h2 {
            color: var(--azul-atomy);
            font-size: 2rem;
            margin-bottom: 20px;
        }
        
        .produto-card {
            background-color: var(--branco);
            border-radius: 10px;
            padding: 25px;
            margin-bottom: 30px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
            border-top: 5px solid var(--azul-atomy);
        }
        
        .produto-card h3 {
            color: var(--azul-atomy);
            margin-top: 0;
        }
        
        .benefits {
            background-color: var(--azul-claro);
            padding: 30px;
            border-radius: 10px;
            margin: 40px 0;
        }
        
        .btn-comprar {
            background-color: var(--azul-atomy);
            color: var(--branco);
            border: none;
            padding: 15px 30px;
            font-size: 1.2rem;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: block;
            margin: 40px auto;
            font-weight: bold;
            text-transform: uppercase;
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
            text-align: center;
            text-decoration: none;
            max-width: 300px;
        }
        
        .btn-comprar:hover {
            background-color: #004d99;
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.3);
        }
        
        .whatsapp-btn {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background-color: #25D366;
            color: white;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            text-align: center;
            font-size: 30px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
            z-index: 100;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }
        
        .whatsapp-btn:hover {
            background-color: #128C7E;
            transform: scale(1.1);
        }
        
        footer {
            background-color: var(--azul-atomy);
            color: var(--branco);
            text-align: center;
            padding: 20px 0;
            margin-top: 50px;
        }
        
        @media (max-width: 768px) {
            .container {
                width: 95%;
            }
        }