/* --- VARIABLES Y ESTILOS GLOBALES --- */
        :root {
            --dark-blue: #161616;
            --mid-blue: #303030;
            --black: #000000;
            --gold: #FFD700;
            --light-text: #EAEFFC;
            --font-heading: 'Montserrat', sans-serif;
            --font-body: 'Lato', sans-serif;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--dark-blue);
            color: var(--light-text);
            line-height: 1.7;
        }
        
        .container {
            width: 90%;
            max-width: 1000px;
            margin: 0 auto;
            padding: 4rem 0;
        }

        h1, h2, h3 {
            font-family: var(--font-heading);
            color: var(--gold);
            font-weight: 700;
        }

        /* --- ENCABEZADO IMPACTANTE --- */
        .main-header {
            text-align: center;
            padding: 5rem 1rem;
            background: linear-gradient(rgba(11, 17, 32, 0.8), var(--dark-blue));
        }

        .main-header h1 {
            font-size: clamp(2.5rem, 6vw, 4rem); /* Tamaño de fuente responsivo */
            font-weight: 900;
            text-transform: uppercase;
            letter-spacing: 2px;
            text-shadow: 0 0 15px rgba(255, 215, 0, 0.3);
        }

        .main-header .hook {
            font-size: clamp(1.1rem, 3vw, 1.4rem);
            font-style: italic;
            margin-top: 1rem;
            color: var(--light-text);
            opacity: 0.9;
        }

        /* --- SECCIÓN INTRO (PORTADA Y CTA PRINCIPAL) --- */
        #intro {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2rem;
            text-align: center;
        }

        .book-cover {
            flex-shrink: 0;
        }
        
        .book-cover img {
            max-width: 280px;
            width: 100%;
            height: auto;
            border: 6px solid var(--mid-blue);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
            background-color: #222; /* Color para el placeholder */
        }
        
        .intro-text h2 {
            font-size: 2.3rem;
            margin-bottom: 1rem;
        }

        .intro-text p {
            font-size: 1.1rem;
            margin-bottom: 2rem;
        }
        
        /* --- BOTÓN DE LLAMADO A LA ACCIÓN (CTA) --- */
        .cta-button {
            display: inline-block;
            background: linear-gradient(45deg, #FFD700, #F0B90B);
            color: var(--black);
            padding: 18px 40px;
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            text-decoration: none;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            box-shadow: 0 5px 20px rgba(255, 215, 0, 0.4);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .cta-button:hover {
            transform: scale(1.05) translateY(-3px);
            box-shadow: 0 8px 25px rgba(255, 215, 0, 0.6);
        }

        /* --- SECCIÓN DE BENEFICIOS --- */
        #benefits {
            background-color: var(--mid-blue);
        }

        #benefits h2 {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 3rem;
        }
        
        .benefits-list {
            list-style: none;
            display: grid;
            gap: 1.5rem;
        }

        .benefits-list li {
            background: var(--dark-blue);
            padding: 1.5rem;
            border-left: 5px solid var(--gold);
            border-radius: 0 8px 8px 0;
            font-size: 1.1rem;
            transition: background-color 0.3s;
        }

        .benefits-list li:hover {
            background-color: #303030;
        }
        
        .benefits-list li::before {
            content: '⭐'; /* Emoji de estrella */
            margin-right: 12px;
        }
        

        /* --- SECCIÓN DE TESTIMONIO --- */
        #testimonial {
            background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4));
            padding: 4rem 1rem;
            overflow: hidden;
        }

        .carrusel {
            display: flex;
            gap: 20px;
            will-change: transform;
        } 

        .testimonial-box {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
            padding: 2.5rem;
            border: 2px solid var(--gold);
            border-radius: 10px;
            background: var(--mid-blue);
            box-shadow: 0 0 25px rgba(0,0,0,0.5);
            flex-shrink: 0;
        }
        
        .testimonial-box blockquote {
            font-size: 1.4rem;
            font-style: italic;
            border: none;
            padding: 0;
            margin: 0 0 1rem 0;
        }
        
        .testimonial-box cite {
            font-weight: 700;
            color: var(--gold);
            font-style: normal;
        }

        /* --- PIE DE PÁGINA --- */
        footer {
            background-color: var(--black);
            text-align: center;
            padding: 3rem 1rem;
        }
        .footer-contact{
            display: flex;
            flex-direction: column;
        }
        .footer-contact h3 {
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }
        #metodos-de-pago{
            display: flex;
            justify-content: center;
        }
        #pagos-link {
            display: flex;
            flex-wrap: wrap;
            
        }
        .paypal-link{
            display: flex;
            background-color: #ffffff;
            padding: 12px 25px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            margin-bottom: 2rem;
            transition: transform 0.2s ease;
            width: 255px;
            justify-content: center;
        }
        .whatsapp-link {
            display: flex;
            background-color: #25D366;
            color: white;
            padding: 12px 25px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            margin-bottom: 2rem;
            transition: transform 0.2s ease;
            width: 255px;
        }
        
        .whatsapp-link:hover { 
            transform: scale(1.05);
        }
        .paypal-link:hover {
            transform: scale(1.05);
        }

        .social-links a {
            color: var(--light-text);
            text-decoration: none;
            margin: 0 10px;
            font-size: 1.2rem;
            transition: color 0.3s;
        }
        
        .social-links a:hover {
            color: var(--gold);
        }
        
        footer p {
            margin-top: 2rem;
            font-size: 0.9rem;
            opacity: 0.6;
        }

        /* --- MEDIA QUERIES PARA RESPONSIVIDAD --- */
        @media (min-width: 768px) {
            #intro {
                flex-direction: row;
                text-align: left;
                gap: 3rem;
            }

            .intro-text {
                flex: 1;
            }
            
            .benefits-list {
                grid-template-columns: 1fr 1fr;
            }
        }