/* --- 1. VARIABLES DE DISEÑO Y PALETA REFINADA DE ÉLITE --- */
:root {
    --primary-gradient: linear-gradient(135deg, #c9a227, #D4AF37, #e6c75a);
    --primary-color: #c9a227;
    --primary-color-bright: #e6c75a;
    --background-color: #050505;
    --surface-color: #0f0f0f;
    --surface-color-elevated: #1a1a1a;
    --text-color: #f0f0f0;
    --text-color-muted: #a0a0a0;
    --heading-font: 'Crimson Pro', serif;
    --body-font: 'Inter', sans-serif;
    --border-radius: 12px;
    --transition-base: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);

    /* ESCALA TIPOGRÁFICA REFINADA */
    --text-xs: 0.75rem;     /* 12px */
    --text-sm: 0.875rem;    /* 14px */
    --text-base: 1rem;      /* 16px */
    --text-lg: 1.125rem;    /* 18px */
    --text-xl: 1.25rem;     /* 20px */
    --text-2xl: 1.5rem;     /* 24px */
    --text-3xl: 1.875rem;   /* 30px */
    --text-4xl: 2.25rem;    /* 36px */
    --text-5xl: 3rem;       /* 48px */
    
    /* ALTURA DE LÍNEA Y ESPACIADO REFINADOS */
    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.75;
    
    /* ESPACIADO ENTRE LETRAS */
    --tracking-tight: -0.025em;
    --tracking-normal: 0;
    --tracking-wide: 0.05em;
}

/* --- 2. REINICIO Y ESTILOS BASE --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--body-font);
    background: var(--background-color);
    color: var(--text-color);
    line-height: var(--leading-normal);
    overflow-x: hidden;
    font-size: var(--text-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- 3. TIPOGRAFÍA Y MAQUETACIÓN REFINADA --- */
h1, h2, h3, h4 {
    font-family: var(--heading-font);
    color: #FFFFFF;
    font-weight: 600;
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    margin-bottom: 1.5rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 2rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    margin-bottom: 1.8rem;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
    margin-bottom: 1.2rem;
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-weight: 600;
    margin-bottom: 1rem;
}

p {
    font-family: var(--body-font);
    font-size: var(--text-lg);
    line-height: var(--leading-relaxed);
    color: var(--text-color-muted);
    margin-bottom: 1.5rem;
    max-width: 65ch;
}

.subtitle {
    font-family: var(--body-font);
    font-size: var(--text-xl);
    line-height: var(--leading-relaxed);
    color: var(--text-color-muted);
    margin-bottom: 2rem;
    font-weight: 400;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition-base);
    font-weight: 500;
}

a:hover {
    color: var(--primary-color-bright);
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* --- ESTILOS PARA PALABRAS DE PODER Y REVELACIONES --- */
strong, b {
    color: #FFFFFF; /* Las palabras de poder en blanco para contrastar */
    font-weight: 600;
}

span { /* Usaremos <span> para las revelaciones doradas */
    color: var(--primary-color);
    font-weight: 600;
    /* --- EFECTO NEÓN SUTIL --- */
    text-shadow: 0 0 1px rgba(255, 255, 255, 0.5), /* Línea blanca sutil */
                 0 0 2px rgba(201, 162, 39, 0.7); /* Resplandor dorado */
}

/* --- 4. CONTENEDOR Y UTILIDADES --- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.text-center {
    text-align: center;
}

/* --- 5. HEADER Y NAVEGACIÓN --- */
.main-header {
    padding: 20px 0;
    background-color: rgba(5, 5, 5, 0.7);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
    overflow: hidden;
    padding-left: 20px;
    padding-right: 20px;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
}

.logo-img {
    height: 40px;
    display: block;
}

.logo-text {
    font-family: var(--heading-font);
    font-size: 1.3rem;
    color: var(--text-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    flex-shrink: 0;
}

.nav-toggle .bar {
    width: 25px;
    height: 2px;
    background-color: var(--text-color);
    margin: 3px 0;
    transition: var(--transition-base);
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

.main-nav a {
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.95rem;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: var(--border-radius);
    transition: var(--transition-base);
}

.main-nav a:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* --- 6. SECCIÓN HERO --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    padding: 120px 20px 100px 20px;
}

#three-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero h1 {
    max-width: 15ch;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    text-align: center;
}

.hero .subtitle {
    font-size: var(--text-xl);
    max-width: 55ch;
    margin: 0 auto 2.5rem auto;
    color: var(--text-color-muted);
    font-weight: 400;
    text-align: center;
}

/* --- 7. BOTÓN CTA REFINADO --- */
.cta-button {
    display: inline-block;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #FFFFFF !important;
    padding: 14px 32px;
    font-family: var(--body-font);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    border-radius: 50px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-3px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(201, 162, 39, 0.3),
                0 0 20px rgba(201, 162, 39, 0.2);
    color: #FFFFFF !important;
}

/* --- 8. TÍTULOS DE SECCIÓN --- */
.section-title {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
}

.section-title h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #FFFFFF;
    display: inline-block;
    padding: 0 20px;
    position: relative;
}

.section-title h2::before, .section-title h2::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 100px;
    height: 1px;
    background: var(--primary-gradient);
}

.section-title h2::before { 
    right: 100%; 
}

.section-title h2::after { 
    left: 100%; 
}

/* --- 9. SECCIONES CON DEGRADADOS --- */
.section {
    padding: 120px 0;
    position: relative;
    background-color: var(--background-color);
    background-image:
        radial-gradient(ellipse at top, rgba(255, 255, 255, 0.05) 0%, transparent 60%),
        linear-gradient(135deg, rgba(40, 40, 40, 0.4) 0%, rgba(10, 10, 10, 0.4) 50%, rgba(20, 20, 20, 0.4) 100%),
        radial-gradient(circle at 20% 80%, rgba(180, 180, 180, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(220, 220, 220, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(212, 175, 55, 0.06) 0%, transparent 40%);
}

.section-dark {
    padding: 120px 0;
    position: relative;
    background-color: var(--surface-color);
    background-image:
        radial-gradient(ellipse at center, rgba(255, 255, 255, 0.08) 0%, transparent 70%),
        linear-gradient(45deg, rgba(30, 30, 30, 0.5) 0%, rgba(10, 10, 10, 0.5) 100%),
        radial-gradient(circle at 10% 90%, rgba(200, 200, 200, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 90% 10%, rgba(230, 230, 230, 0.09) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(212, 175, 55, 0.08) 0%, transparent 45%);
}

/* --- 10. PILARES --- */
.pilars-content {
    display: flex;
    flex-direction: column;
    gap: 60px;
    max-width: 800px;
    margin: 0 auto;
}

.pilar-item {
    display: flex;
    align-items: flex-start;
    gap: 30px;
    transition: var(--transition-base);
}

.pilar-item:hover {
    transform: translateX(10px);
}

.pilar-number {
    font-family: var(--heading-font);
    font-size: 3rem;
    color: var(--primary-color);
    font-weight: 700;
    opacity: 0.6;
    line-height: 1;
    transition: var(--transition-base);
}

.pilar-item:hover .pilar-number {
    opacity: 1;
}

.pilar-text h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: #FFFFFF;
}

.pilar-text p {
    color: var(--text-color-muted);
    font-size: 1.05rem;
    font-weight: 300;
}

/* --- 11. NUEVA SECCIÓN DE AUTORIDAD --- */
.authority-section {
    background-color: var(--surface-color);
    border-top: 1px solid rgba(201, 162, 39, 0.2);
    border-bottom: 1px solid rgba(201, 162, 39, 0.2);
}
.authority-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}
.authority-content .subtitle {
    font-family: var(--heading-font);
    font-size: 1.5rem;
    font-style: italic;
    color: var(--primary-color);
    margin-bottom: 2rem;
    display: block;
}

/* --- 12. CAPTURAS DE REALIDAD --- */
.carousel-container {
    overflow: hidden;
    padding: 40px 0;
    position: relative;
}

.testimonial-track {
    display: flex;
    animation: scroll 40s linear infinite;
    width: fit-content;
}

.carousel-container:hover .testimonial-track {
    animation-play-state: paused;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.whatsapp-card {
    background: #111b21;
    border-radius: 8px;
    padding: 15px;
    min-width: 350px;
    margin-right: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.8);
    border: 1px solid rgba(255,255,255,0.05);
    position: relative;
    transform: translateZ(0);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 0 0 1px rgba(212, 175, 55, 0.3), 0 20px 40px rgba(0,0,0,0.8);
}

.whatsapp-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 30px 60px rgba(0,0,0,0.9);
}

.chat-bubble {
    color: #e9edef;
    position: relative;
}

.chat-bubble p {
    margin: 0;
    font-size: 0.95rem;
}

.chat-time {
    font-size: 0.75rem;
    color: #8696a0;
    float: right;
    margin-left: 10px;
    text-decoration: none !important;
}

/* --- 13. SECCIÓN SERVICIOS REFINADA --- */
.reality-content {
    text-align: center;
}

.reality-text {
    font-size: 1.3rem;
    max-width: 800px;
    margin: 0 auto 60px auto;
    color: var(--text-color-muted);
}

.reality-text span {
    color: var(--primary-color);
    font-weight: 700;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 40px 25px;
    border-radius: 16px;
    text-align: center;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: block;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(212, 175, 55, 0.15) 0%, rgba(0, 0, 0, 0.4) 70%);
    opacity: 0;
    transition: opacity 0.4s ease, background 0.4s ease;
}

.service-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover::before {
    opacity: 1;
    background: radial-gradient(circle at 50% 50%, rgba(212, 175, 55, 0.25) 0%, rgba(0, 0, 0, 0.5) 70%);
}

.service-card:hover::after {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 40px 0 rgba(212, 175, 55, 0.25);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    height: 64px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.service-card:hover .card-icon {
    transform: scale(1.1);
}

.service-card h3 {
    color: #FFFFFF;
    font-size: 1.6rem;
    margin-bottom: 15px;
    transition: color 0.3s ease;
}

.service-card:hover h3 {
    color: var(--primary-color);
}

.service-link {
    display: inline-block;
    margin-top: 15px;
    color: var(--primary-color);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.service-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.service-card:hover .service-link::after {
    width: 100%;
}

/* --- 14. SECCIÓN DE CIERRE --- */
.closing-text {
    font-family: var(--heading-font);
    font-size: 1.8rem;
    font-style: italic;
    text-align: center;
    color: var(--text-color-muted);
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.6;
}

/* --- 15. FOOTER (SIN LÍNEAS) --- */
.main-footer {
    background: linear-gradient(90deg, var(--surface-color-elevated), var(--surface-color), var(--surface-color-elevated));
    padding: 15px 0;
    border-top: none;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-content p {
    font-size: 0.85rem;
    color: var(--text-color-muted);
    margin-bottom: 5px;
}

.footer-content p i {
    color: var(--primary-color);
    margin-right: 10px;
    width: 16px;
    text-align: center;
}

.footer-content a {
    color: var(--text-color-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-content a:hover {
    color: var(--primary-color);
}

.social-media a {
    color: var(--text-color-muted);
    font-size: 1.2rem;
    margin-left: 15px;
    transition: color 0.3s ease;
}

.social-media a:hover {
    color: var(--primary-color);
}

/* --- 16. BOTÓN FLOTANTE DE WHATSAPP --- */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 30px;
    right: 30px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 28px;
    box-shadow: 0 5px 20px rgba(37, 211, 102, 0.6);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    text-decoration: none;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.8);
}

/* --- ESTILOS ADICIONALES PARA LA LANDING PAGE (VERSIÓN ÉLITE FINAL) --- */

/* --- Cuestionario con Checkboxes Funcionales --- */
.quiz-container {
    max-width: 800px;
    margin: 0 auto 3rem auto;
}
.quiz-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-base);
}
.quiz-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.15);
}
.quiz-checkbox {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}
.checkmark {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background-color: transparent;
    border: 2px solid var(--primary-color);
    border-radius: 6px;
    transition: var(--transition-base);
    position: relative;
}
.checkmark:after {
    content: "";
    position: absolute;
    display: none;
    left: 7px;
    top: 3px;
    width: 6px;
    height: 12px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}
.quiz-checkbox:checked ~ .checkmark {
    background-color: var(--primary-color);
}
.quiz-checkbox:checked ~ .checkmark:after {
    display: block;
}
.question-text {
    flex-grow: 1;
    font-size: var(--text-base);
    color: var(--text-color);
    line-height: var(--leading-relaxed);
}

/* --- SECCIÓN PROCESSO (ZIG-ZAG LAYOUT) --- */
.process-zigzag {
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 0;
    position: relative;
}
.process-zigzag::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2px;
    height: 90%;
    background: linear-gradient(to bottom, var(--primary-color), transparent);
    transform: translate(-50%, -50%);
    z-index: 0;
}
.process-step {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-bottom: 4rem;
    position: relative;
}
.process-step:nth-child(even) {
    flex-direction: row-reverse;
    justify-content: flex-end;
}
.process-content {
    flex: 1;
}
.process-step:nth-child(even) .process-content {
    text-align: right;
}
.process-content h4 {
    font-size: 1.4rem;
    color: #FFFFFF;
    margin-bottom: 10px;
}
.process-content p {
    font-size: var(--text-base);
    color: var(--text-color-muted);
}
.process-visual {
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 0 25px rgba(201, 162, 39, 0.2);
    position: relative;
    overflow: hidden;
}
.process-visual::before {
    content: '';
    position: absolute;
    top: -2px; left: -2px; right: -2px; bottom: -2px;
    background: var(--primary-gradient);
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.4s ease;
}
.process-step:hover .process-visual::before {
    opacity: 0.5;
}
.process-visual svg {
    color: var(--primary-color);
    z-index: 2;
    filter: drop-shadow(0 0 10px rgba(201, 162, 39, 0.5));
}

/* --- SECCIÓN BENEFICIOS (MOSAIC LAYOUT) --- */
.benefits-mosaic {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: repeat(2, 1fr);
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}
.mosaic-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
    background-color: var(--surface-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
    transition: var(--transition-base);
}
.mosaic-item:hover {
    transform: translateY(-5px);
}
.mosaic-item.item-1 { grid-column: 1; grid-row: 1; }
.mosaic-item.item-2 { grid-column: 2; grid-row: 1; }
.mosaic-item.item-3 { grid-column: 3; grid-row: 1; }
.mosaic-item.item-4 { grid-column: 4; grid-row: 1; }
.mosaic-item.item-5 { grid-column: 2 / span 2; grid-row: 2; }

.mosaic-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(201, 162, 39, 0.15), transparent 70%);
    opacity: 0;
    transition: opacity 0.4s ease;
}
.mosaic-item:hover .mosaic-bg {
    opacity: 1;
}
.mosaic-content {
    position: relative;
    z-index: 2;
}
.benefit-icon {
    color: var(--primary-color);
    margin-bottom: 15px;
}
.mosaic-item h4 {
    font-size: 1.2rem;
    color: #FFFFFF;
    margin-bottom: 10px;
}
.mosaic-item p {
    font-size: 0.95rem;
    color: var(--text-color-muted);
}

/* --- SECCIÓN CIENCIA (3-COLUMN LAYOUT) --- */
.science-layout {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}
.science-content {
    text-align: left;
}
.science-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    text-align: left;
}
.science-content p {
    font-size: var(--text-base);
    text-align: left;
    max-width: none;
    margin-bottom: 1rem;
}
.science-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}
.science-visual svg {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 0 15px rgba(201, 162, 39, 0.3));
}

/* --- SECCIÓN DE PAGO (SPLIT-SCREEN ELEVADO) --- */
.payment-section {
    padding: 120px 0;
    background: linear-gradient(135deg, #0a0a0a, #111111);
    position: relative;
    overflow: hidden;
}

.payment-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(201, 162, 39, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(201, 162, 39, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.payment-portal {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 80px;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.payment-left {
    padding-right: 40px;
}

.payment-left h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #FFFFFF;
    line-height: 1.2;
}

.payment-left p {
    font-size: var(--text-lg);
    margin-bottom: 2rem;
    color: var(--text-color-muted);
    max-width: none;
}

.features-list-premium {
    list-style: none;
    padding: 0;
    margin-bottom: 2rem;
}

.features-list-premium li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.2rem;
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    color: var(--text-color-muted);
}

.features-list-premium li i {
    color: var(--primary-color);
    margin-right: 12px;
    margin-top: 4px;
    flex-shrink: 0;
}

.guarantee-box {
    background: rgba(201, 162, 39, 0.08);
    border: 1px solid rgba(201, 162, 39, 0.2);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-top: 2rem;
}

.guarantee-box h4 {
    font-size: var(--text-lg);
    margin-bottom: 0.8rem;
    color: var(--primary-color);
    font-weight: 600;
}

.guarantee-box p {
    font-size: var(--text-base);
    margin-bottom: 0;
}

.price-box {
    display: flex;
    align-items: baseline;
    margin: 2.5rem 0;
}

.currency {
    font-size: var(--text-xl);
    color: var(--text-color-muted);
    margin-right: 8px;
    font-weight: 500;
}

.amount {
    font-size: 3.5rem;
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1;
}

.payment-right {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 40px;
    position: relative;
    overflow: hidden;
}

.payment-right::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.payment-right h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    text-align: center;
    color: #FFFFFF;
}

.payment-right p {
    font-size: var(--text-base);
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-color-muted);
}

.bonus-box {
    background: rgba(201, 162, 39, 0.08);
    border: 1px solid rgba(201, 162, 39, 0.2);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
}

.bonus-box h4 {
    font-size: var(--text-lg);
    margin-bottom: 0.8rem;
    text-align: center;
    color: var(--primary-color);
    font-weight: 600;
}

.bonus-box p {
    font-size: var(--text-sm);
    text-align: center;
    margin-bottom: 0;
}

.inscription-form {
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: #FFFFFF;
    font-size: var(--text-base);
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.08);
}

.cta-button.large {
    width: 100%;
    padding: 16px 24px;
    font-size: var(--text-base);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 8px;
    background: var(--primary-gradient);
    border: none;
    color: #000000;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 1rem;
}

.cta-button.large:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(201, 162, 39, 0.3);
}

/* Estilos para el mensaje de seguridad */
.security-message {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 1.5rem;
    font-size: var(--text-xs);
    color: var(--text-color-muted);
}

.security-message i {
    margin-right: 8px;
    color: var(--primary-color);
}

/* --- 17. DISEÑO RESPONSIVE FINAL --- */
@media (max-width: 992px) {
    .services-grid { 
        grid-template-columns: repeat(2, 1fr); 
    }
    .process-zigzag::before {
        display: none;
    }
    .process-step {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    .process-step:nth-child(even) {
        flex-direction: column;
    }
    .science-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .science-content {
        text-align: center;
    }
    .science-content h2 {
        text-align: center;
    }
    .science-content p {
        text-align: center;
    }
    .payment-portal {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .payment-left {
        padding-right: 0;
    }
    .payment-left h2, .payment-left p {
        text-align: center;
    }
    .amount {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .container { 
        padding: 0 20px; 
    }
    
    .nav-toggle { 
        display: flex; 
    }
    
    .main-nav ul {
        position: fixed;
        top: -100vh;
        left: 0;
        flex-direction: column;
        background-color: var(--surface-color-elevated);
        width: 100%;
        text-align: center;
        transition: top 0.3s ease-in-out;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 20px 0;
    }
    
    .main-nav ul.active {
        top: 80px;
    }
    
    .hero {
        padding-top: 150px;
        padding-bottom: 80px;
        justify-content: flex-start;
    }
    
    .hero-content {
        max-width: 95%;
        transform: none !important;
        text-align: center !important;
        margin: 0 auto;
    }
    
    .hero h1 { 
        font-size: 2.2rem; 
        text-align: center !important;
    }
    
    .hero .subtitle { 
        font-size: var(--text-base); 
        text-align: center !important;
    }
    
    .cta-button {
        font-size: 0.9rem;
        padding: 12px 25px;
    }
    
    .section-title h2 { 
        font-size: 2rem; 
    }
    
    .section-title h2::before, .section-title h2::after { 
        width: 50px; 
    }
    
    .pilar-item { 
        flex-direction: column; 
        text-align: center; 
        gap: 15px;
    }
    
    .services-grid { 
        grid-template-columns: 1fr; 
        gap: 30px; 
    }
    
    .footer-content { 
        flex-direction: column; 
        gap: 15px; 
        text-align: center; 
    }
    
    .section { 
        padding: 80px 0; 
    }
    
    .closing-text { 
        font-size: 1.4rem; 
    }
    
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
        font-size: 24px;
    }
    .benefits-mosaic {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: repeat(3, 1fr);
    }
    .mosaic-item.item-1 { grid-column: 1; grid-row: 1; }
    .mosaic-item.item-2 { grid-column: 2; grid-row: 1; }
    .mosaic-item.item-3 { grid-column: 1; grid-row: 2; }
    .mosaic-item.item-4 { grid-column: 2; grid-row: 2; }
    .mosaic-item.item-5 { grid-column: 1 / span 2; grid-row: 3; }
}

@media (max-width: 576px) {
    .payment-right {
        padding: 30px 20px;
    }
    
    .amount {
        font-size: 2.5rem;
    }
}