/* ============================================
   EL FUMIGADOR PLUS · LANDING
   Estética: Industrial / Profesional / Bold
   ============================================ */

/* ====== RESET & BASE ====== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Paleta de sanidad / salud / confianza */
    --c-black: #0a0a0a;
    --c-bg: #0f1419;
    --c-bg-alt: #161616;
    --c-bg-light: #f5f7f5;
    --c-bg-cream: #e8efe8;
    --c-text: #f5f7f5;
    --c-text-dark: #0f1419;
    --c-muted: #8a8a8a;
    --c-muted-dark: #5a6065;

    /* Verdes de sanidad (color primario) */
    --c-green-primary: #2a8f5f;
    --c-green-dark: #1f6e48;
    --c-green-bright: #34b673;
    --c-green-soft: #e3f2ea;

    /* Azul de asesoramiento técnico / confianza médica */
    --c-blue: #2563eb;
    --c-blue-dark: #1e40af;
    --c-blue-bright: #3b82f6;
    --c-blue-soft: #e0eaff;

    /* WhatsApp (mantengo solo para el botón flotante) */
    --c-wsp: #25d366;
    --c-wsp-dark: #128c7e;

    /* Acentos */
    --c-yellow: #f4d35e;
    --c-eco: #4caf50;

    /* Variables genéricas (compatibilidad con resto del CSS) */
    --c-red: var(--c-green-primary);
    --c-red-dark: var(--c-green-dark);
    --c-red-bright: var(--c-green-bright);
    --c-green: var(--c-blue);

    /* Tipografía */
    --font-display: 'Anton', 'Bebas Neue', Impact, sans-serif;
    --font-body: 'Manrope', system-ui, sans-serif;

    /* Layout */
    --max-width: 1200px;
    --radius-sm: 4px;
    --radius: 10px;
    --radius-lg: 18px;

    /* Transitions */
    --t-fast: 0.2s ease;
    --t: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    color: var(--c-text-dark);
    background: var(--c-bg-light);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img,
video {
    max-width: 100%;
    display: block;
    height: auto;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--t-fast);
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ====== TIPOGRAFÍA REUSABLE ====== */
.section-eyebrow {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--c-green-primary);
    margin-bottom: 18px;
    padding: 6px 14px;
    border: 1.5px solid var(--c-green-primary);
    border-radius: 999px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5.5vw, 4rem);
    line-height: 0.95;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--c-text-dark);
    margin-bottom: 14px;
}

.title-accent {
    color: var(--c-green-primary);
    position: relative;
    display: inline-block;
}

.title-accent::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 100%;
    height: 4px;
    background: var(--c-green-primary);
    transform: scaleX(0);
    transform-origin: left;
    animation: underline 0.8s 0.4s ease-out forwards;
}

@keyframes underline {
    to { transform: scaleX(1); }
}

.section-sub {
    font-size: 1.05rem;
    color: var(--c-muted-dark);
    max-width: 600px;
    margin: 0 auto;
}

.section-head {
    margin-bottom: 56px;
}

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

/* ====== BOTONES ====== */
.btn-primary,
.btn-secondary,
.btn-header {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 28px;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.3px;
    border-radius: var(--radius);
    transition: all var(--t);
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
    line-height: 1;
}

.btn-primary {
    background: var(--c-blue);
    color: white;
    box-shadow: 0 6px 0 var(--c-blue-dark), 0 12px 24px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(2px);
    box-shadow: 0 4px 0 var(--c-blue-dark), 0 8px 16px rgba(37, 99, 235, 0.35);
    background: var(--c-blue-bright);
}

.btn-primary:active {
    transform: translateY(6px);
    box-shadow: 0 0 0 var(--c-blue-dark);
}

.btn-large {
    padding: 20px 36px;
    font-size: 1.1rem;
}

.btn-secondary {
    background: transparent;
    color: var(--c-text-dark);
    border: 2px solid var(--c-text-dark);
}

.btn-secondary:hover {
    background: var(--c-text-dark);
    color: var(--c-bg-light);
}

.btn-header {
    padding: 12px 22px;
    background: var(--c-green-primary);
    color: white;
    font-size: 0.92rem;
    border-radius: 999px;
}

.btn-header:hover {
    background: var(--c-green-dark);
    transform: translateY(-1px);
}

/* ====== HEADER ====== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: border-color var(--t), box-shadow var(--t);
}

/* El blur se mueve a ::before para que backdrop-filter no cree un
   "containing block" que trape al nav con position:fixed dentro del header */
.site-header::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background: rgba(245, 243, 238, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: background var(--t);
}

.site-header.scrolled {
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.site-header.scrolled::before {
    background: rgba(245, 243, 238, 0.95);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    gap: 24px;
}

.logo-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo-img {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    object-fit: cover;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.1rem;
    letter-spacing: 1px;
    color: var(--c-text-dark);
    line-height: 1;
}

.logo-text em {
    color: var(--c-green-primary);
    font-style: normal;
}

.main-nav {
    display: flex;
    gap: 28px;
}

.main-nav a {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--c-text-dark);
    position: relative;
    padding: 6px 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--c-green-primary);
    transition: width var(--t);
}

.main-nav a:hover::after {
    width: 100%;
}

/* CTA dentro del nav (solo visible en mobile dentro del menú) */
.main-nav .nav-cta {
    display: none;
}

/* HAMBURGUESA — solo visible en mobile */
.hamburger {
    display: none;
    background: transparent;
    border: 0;
    padding: 8px;
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    position: relative;
    z-index: 110;
}

.hamburger span {
    display: block;
    width: 26px;
    height: 3px;
    background: var(--c-text-dark);
    border-radius: 3px;
    transition: transform var(--t), opacity var(--t);
    transform-origin: center;
}

.hamburger.is-active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.hamburger.is-active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.is-active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

body.nav-open {
    overflow: hidden;
}

/* ====== HERO ====== */
.hero {
    position: relative;
    padding: 130px 0 80px;
    background: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 100%);
    color: var(--c-text);
    overflow: hidden;
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(37, 99, 235, 0.22) 0%, transparent 45%),
        radial-gradient(circle at 80% 70%, rgba(42, 143, 95, 0.18) 0%, transparent 45%);
    pointer-events: none;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    opacity: 0.6;
}

.hero-grid {
    position: relative;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.18em;
    color: var(--c-yellow);
    background: rgba(244, 211, 94, 0.12);
    padding: 10px 18px;
    border-radius: 999px;
    margin-bottom: 24px;
    border: 1px solid rgba(244, 211, 94, 0.4);
    text-transform: uppercase;
    line-height: 1.2;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 7vw, 5.8rem);
    line-height: 0.92;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 22px;
    color: white;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.hero-title .title-accent {
    color: var(--c-green-bright);
    -webkit-text-stroke: 0;
    text-shadow:
        2px 2px 0 var(--c-green-dark),
        4px 4px 0 rgba(0,0,0,0.4);
}

.hero-title .title-accent::after {
    background: var(--c-green-bright);
}

.hero-sub {
    font-size: 1.12rem;
    line-height: 1.6;
    color: rgba(245, 243, 238, 0.85);
    margin-bottom: 32px;
    max-width: 540px;
}

.hero-sub strong {
    color: white;
    font-weight: 700;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 32px;
}

.hero-cta .btn-secondary {
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.05);
}

.hero-cta .btn-secondary:hover {
    background: white;
    color: var(--c-text-dark);
    border-color: white;
}

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
}

.hero-trust li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: rgba(245, 243, 238, 0.8);
}

.hero-trust .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--c-green-bright);
    box-shadow: 0 0 10px var(--c-green-bright);
}

.hero-image-wrap {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInUp 0.8s 0.2s ease-out backwards;
}

.hero-image-bg {
    position: absolute;
    width: 380px;
    height: 380px;
    background: radial-gradient(circle, var(--c-green-bright) 0%, var(--c-green-dark) 70%, transparent 100%);
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.4;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.7; }
}

/* Contenedor que flota: imagen + badges como una sola unidad */
.hero-image-floating {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 420px;
    animation: float 6s ease-in-out infinite;
}

.hero-image {
    position: relative;
    max-width: 420px;
    width: 100%;
    filter: drop-shadow(0 30px 60px rgba(0,0,0,0.6));
    z-index: 2;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(-2deg); }
    50% { transform: translateY(-15px) rotate(-2deg); }
}

.hero-badge {
    position: absolute;
    bottom: 20px;
    right: -10px;
    background: white;
    color: var(--c-text-dark);
    padding: 16px 22px;
    border-radius: var(--radius);
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
    z-index: 3;
    transform: rotate(8deg);
    text-align: center;
}

.hero-badge .badge-num {
    display: block;
    font-family: var(--font-display);
    font-size: 2.2rem;
    line-height: 1;
    color: var(--c-text-dark);
}

.hero-badge .badge-stars {
    display: block;
    color: var(--c-yellow);
    font-size: 0.95rem;
    letter-spacing: 2px;
    margin: 2px 0;
}

.hero-badge .badge-text {
    display: block;
    font-size: 0.78rem;
    color: var(--c-muted-dark);
    font-weight: 600;
}

/* ====== TICKER ====== */
.ticker {
    background: var(--c-green-primary);
    color: white;
    padding: 14px 0;
    overflow: hidden;
    border-top: 4px solid var(--c-text-dark);
    border-bottom: 4px solid var(--c-text-dark);
}

.ticker-track {
    display: flex;
    gap: 60px;
    white-space: nowrap;
    animation: ticker-scroll 30s linear infinite;
    font-family: var(--font-display);
    font-size: 1.4rem;
    letter-spacing: 2px;
}

@keyframes ticker-scroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* ====== BENEFITS ====== */
.benefits {
    padding: 100px 0;
    background: var(--c-bg-light);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.benefit-card {
    background: white;
    padding: 32px 28px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0,0,0,0.06);
    transition: all var(--t);
    position: relative;
    overflow: hidden;
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--c-green-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t);
}

.benefit-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    border-color: transparent;
}

.benefit-card:hover::before {
    transform: scaleX(1);
}

/* Quitar marker default del <details>/<summary> en desktop:
   los benefits siempre están "abiertos", funcionan como cards normales */
.benefit-card[open] summary,
.benefit-card summary {
    list-style: none;
    cursor: default;
    display: block;
}

.benefit-card summary::-webkit-details-marker {
    display: none;
}

.benefit-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    display: inline-block;
    line-height: 1;
}

.benefit-card h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
    color: var(--c-text-dark);
}

.benefit-card p {
    font-size: 0.95rem;
    color: var(--c-muted-dark);
    line-height: 1.6;
}

/* ====== PRODUCT ====== */
.product {
    padding: 100px 0;
    background: var(--c-bg-cream);
    position: relative;
    overflow: hidden;
}

.product::before {
    content: 'PROFESIONAL';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-15deg);
    font-family: var(--font-display);
    font-size: 18rem;
    color: rgba(42, 143, 95, 0.04);
    letter-spacing: 8px;
    pointer-events: none;
    white-space: nowrap;
    z-index: 0;
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    gap: 60px;
    align-items: stretch;
    position: relative;
    z-index: 1;
}

.product-left {
    display: flex;
    flex-direction: column;
    gap: 20px;
    height: 100%;
}

.product-image-col {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    flex: 1;
}

.product-image-col::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 85%;
    aspect-ratio: 1;
    background: var(--c-green-primary);
    border-radius: 50%;
    opacity: 0.05;
    z-index: 0;
}

.product-image {
    max-width: 380px;
    width: 100%;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 25px 40px rgba(0,0,0,0.15));
    transition: transform var(--t);
}

.product-image:hover {
    transform: scale(1.04);
}

.product-info {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-info .section-title {
    margin-bottom: 18px;
}

.product-desc {
    font-size: 1.05rem;
    color: var(--c-muted-dark);
    margin-bottom: 28px;
    line-height: 1.7;
}

.product-info .instructions-box {
    flex: 1;
    margin-bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

/* Footer del producto: solo el CTA centrado */
.product-footer {
    margin-top: 40px;
    display: flex;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.product-footer .product-cta {
    min-width: 320px;
    justify-content: center;
}

/* ====== SPECS GRID (Ficha técnica) ====== */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    background: white;
    padding: 20px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0,0,0,0.06);
    box-shadow: 0 6px 18px rgba(0,0,0,0.04);
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 14px;
    background: var(--c-bg-cream);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--c-green-primary);
}

.spec-label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--c-muted-dark);
}

.spec-value {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--c-text-dark);
    line-height: 1.3;
}

.instructions-box {
    background: white;
    padding: 28px;
    border-radius: var(--radius-lg);
    margin-bottom: 28px;
    border-left: 4px solid var(--c-green-primary);
}

.instructions-box h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    text-transform: uppercase;
    margin-bottom: 16px;
    color: var(--c-text-dark);
    letter-spacing: 0.5px;
}

.instructions-box ol {
    counter-reset: step;
    list-style: none;
}

.instructions-box ol li {
    counter-increment: step;
    padding: 10px 0 10px 38px;
    position: relative;
    font-size: 0.95rem;
    color: var(--c-muted-dark);
    line-height: 1.5;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.instructions-box ol li:last-child {
    border-bottom: none;
}

.instructions-box ol li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: 10px;
    width: 26px;
    height: 26px;
    background: var(--c-green-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    font-family: var(--font-body);
}

/* ====== VIDEO ====== */
.video-section {
    padding: 100px 0;
    background: var(--c-bg);
    color: white;
}

.video-section .section-title {
    color: white;
}

.video-section .section-sub {
    color: rgba(255,255,255,0.7);
}

.video-wrap {
    max-width: 900px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
    border: 4px solid var(--c-green-primary);
    aspect-ratio: 16 / 9;
    background: black;
}

.video-wrap video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ====== REVIEWS ====== */
.reviews {
    padding: 100px 0;
    background: var(--c-bg-light);
}

/* ===== Reviews layout =====
   PC: grid con las 6 reseñas visibles. Slider oculto.
   Mobile (≤640px): grid oculto. Slider visible, 1 reseña full-width.
*/

/* DESKTOP (default) */
.reviews-desktop {
    display: block;
}

.reviews-grid-desktop {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.reviews-slider {
    display: none;
}

.review-card {
    background: white;
    padding: 28px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0,0,0,0.06);
    transition: all var(--t);
    position: relative;
}

.review-card::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 20px;
    font-family: var(--font-display);
    font-size: 5rem;
    color: var(--c-green-primary);
    line-height: 1;
    opacity: 0.15;
}

.review-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px rgba(0,0,0,0.08);
}

.review-stars {
    color: var(--c-yellow);
    font-size: 1.1rem;
    letter-spacing: 3px;
    margin-bottom: 14px;
}

.review-text {
    font-size: 0.98rem;
    color: var(--c-text-dark);
    margin-bottom: 18px;
    line-height: 1.65;
}

.review-text strong {
    color: var(--c-green-primary);
}

.review-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 14px;
    border-top: 1px solid rgba(0,0,0,0.06);
    font-size: 0.82rem;
}

.review-author {
    font-weight: 700;
    color: var(--c-text-dark);
}

.review-date {
    color: var(--c-muted);
}

/* ====== CTA BANNER ====== */
.cta-banner {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--c-green-primary) 0%, var(--c-blue-dark) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(255,255,255,0.04) 35px, rgba(255,255,255,0.04) 70px);
    pointer-events: none;
}

.cta-inner {
    text-align: center;
    position: relative;
}

.cta-inner h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.4rem);
    line-height: 1;
    text-transform: uppercase;
    margin-bottom: 14px;
    letter-spacing: 1px;
}

.cta-inner p {
    font-size: 1.1rem;
    margin-bottom: 32px;
    opacity: 0.95;
}

/* ====== FAQ ====== */
.faq {
    padding: 100px 0;
    background: var(--c-bg-cream);
}

.faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.faq-item {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--t);
    border: 1px solid rgba(0,0,0,0.06);
}

.faq-item[open] {
    box-shadow: 0 8px 20px rgba(0,0,0,0.06);
    border-color: var(--c-green-primary);
}

.faq-item summary {
    padding: 22px 26px;
    font-weight: 700;
    font-size: 1.02rem;
    color: var(--c-text-dark);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    transition: color var(--t);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--c-green-primary);
    line-height: 1;
    transition: transform var(--t);
    flex-shrink: 0;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-item summary:hover {
    color: var(--c-green-primary);
}

.faq-answer {
    padding: 0 26px 24px;
    color: var(--c-muted-dark);
    font-size: 0.98rem;
    line-height: 1.65;
    animation: fadeIn 0.3s ease-out;
}

.faq-answer strong {
    color: var(--c-text-dark);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ====== FOOTER ====== */
.site-footer {
    background: var(--c-bg);
    color: var(--c-text);
    padding: 70px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.3fr;
    gap: 50px;
    padding-bottom: 50px;
}

.footer-brand .logo-text {
    color: white;
}

.footer-brand p {
    margin-top: 16px;
    color: rgba(255,255,255,0.65);
    font-size: 0.95rem;
    line-height: 1.6;
    max-width: 360px;
}

.footer-col h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 18px;
    color: white;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col li,
.footer-col a {
    color: rgba(255,255,255,0.65);
    font-size: 0.92rem;
    transition: color var(--t-fast);
}

.footer-col a:hover {
    color: var(--c-green-bright);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 24px 0;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
}

/* ====== RESPONSIVE ====== */
@media (max-width: 980px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-text {
        order: 2;
    }

    .hero-image-wrap {
        order: 1;
    }

    .hero-sub {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-trust {
        justify-content: center;
    }

    .product-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .product-left {
        order: 1;
        gap: 20px;
    }

    .product-info {
        order: 2;
    }

    .product-footer {
        margin-top: 30px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    /* ===== MOBILE MENU: full-screen vertical drawer ===== */
    .hamburger {
        display: flex;
    }

    .btn-header {
        display: none;
    }

    .main-nav {
        position: fixed;
        inset: 0;
        background: var(--c-bg-light);
        flex-direction: column;
        justify-content: flex-start;
        align-items: stretch;
        gap: 0;
        padding: 90px 28px 40px;
        transform: translateY(-100%);
        transition: transform var(--t);
        z-index: 100;
        overflow-y: auto;
        display: flex;
    }

    .main-nav.is-open {
        transform: translateY(0);
    }

    .main-nav a {
        display: block;
        padding: 20px 8px;
        font-family: var(--font-display);
        font-size: 1.6rem;
        letter-spacing: 1.5px;
        text-transform: uppercase;
        color: var(--c-text-dark);
        border-bottom: 1px solid rgba(0,0,0,0.08);
        line-height: 1;
    }

    .main-nav a::after {
        display: none;
    }

    .main-nav .nav-cta {
        display: block;
        margin-top: 24px;
        padding: 18px;
        background: var(--c-blue);
        color: white;
        text-align: center;
        border-radius: var(--radius);
        font-size: 1.05rem;
        border-bottom: none;
        letter-spacing: 0.5px;
        box-shadow: 0 6px 0 var(--c-blue-dark);
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 18px;
    }

    .hero {
        padding: 110px 0 60px;
    }

    .hero-title {
        font-size: clamp(2.2rem, 10vw, 3.5rem);
    }

    .hero-cta {
        flex-direction: column;
        gap: 12px;
    }

    .hero-cta .btn-primary,
    .hero-cta .btn-secondary {
        width: 100%;
    }

    .hero-trust {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }

    .hero-image {
        max-width: 280px;
    }

    .hero-badge {
        bottom: -10px;
        right: 10px;
        padding: 12px 16px;
    }

    .hero-badge .badge-num {
        font-size: 1.6rem;
    }

    .ticker-track {
        font-size: 1.1rem;
        gap: 40px;
    }

    .specs-grid {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 14px;
    }

    .benefits,
    .product,
    .video-section,
    .reviews,
    .faq {
        padding: 70px 0;
    }

    .section-head {
        margin-bottom: 40px;
    }

    .product-image {
        max-width: 260px;
    }

    .product::before {
        font-size: 8rem;
    }

    .instructions-box {
        padding: 22px 18px;
    }

    /* ====== BENEFITS ACORDEÓN (solo mobile) ====== */
    .benefits-grid {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .benefit-card {
        padding: 0;
        border-radius: var(--radius);
    }

    .benefit-card[open] summary,
    .benefit-card summary {
        cursor: pointer;
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 18px 20px;
        position: relative;
        list-style: none;
        transition: color var(--t);
    }

    .benefit-card summary::after {
        content: '+';
        margin-left: auto;
        font-family: var(--font-display);
        font-size: 1.6rem;
        color: var(--c-green-primary);
        line-height: 1;
        transition: transform var(--t);
        flex-shrink: 0;
    }

    .benefit-card[open] summary::after {
        transform: rotate(45deg);
    }

    .benefit-card[open] {
        border-color: var(--c-green-primary);
        box-shadow: 0 6px 18px rgba(0,0,0,0.05);
    }

    /* Emoji y título al mismo nivel */
    .benefit-card .benefit-icon {
        font-size: 1.7rem;
        margin-bottom: 0;
        flex-shrink: 0;
    }

    .benefit-card h3 {
        font-size: 1.05rem;
        margin-bottom: 0;
        flex: 1;
        line-height: 1.1;
    }

    .benefit-card p {
        padding: 0 20px 18px 20px;
        font-size: 0.92rem;
    }

    /* En mobile el hover trick no se usa; mantener la barra superior si está abierto */
    .benefit-card:hover {
        transform: none;
        box-shadow: none;
        border-color: rgba(0,0,0,0.06);
    }

    .benefit-card[open]:hover {
        border-color: var(--c-green-primary);
    }

    .benefit-card:hover::before,
    .benefit-card::before {
        display: none;
    }

    /* ====== SLIDER DE RESEÑAS (solo mobile) ======
       Filosofía: 1 reseña a la vez, ocupa 100% del ancho. Sin scroll, sin swipe.
       Solo cambia con botones/dots. La que NO es active está oculta (display:none).
    */
    .reviews-desktop {
        display: none;
    }

    .reviews-slider {
        display: block;
        width: 100%;
    }

    .slider-viewport {
        width: 100%;
        padding: 0 18px;
        min-height: 220px;
    }

    .slider-viewport .slide {
        display: none;
        background: white;
        padding: 26px 22px;
        border-radius: var(--radius-lg);
        border: 1px solid rgba(0,0,0,0.06);
        position: relative;
    }

    .slider-viewport .slide.is-active {
        display: block;
        animation: slideFadeIn 0.35s ease-out;
    }

    @keyframes slideFadeIn {
        from { opacity: 0; transform: translateY(8px); }
        to   { opacity: 1; transform: translateY(0); }
    }

    .slider-viewport .slide::before {
        content: '"';
        position: absolute;
        top: -10px;
        left: 20px;
        font-family: var(--font-display);
        font-size: 5rem;
        color: var(--c-green-primary);
        line-height: 1;
        opacity: 0.15;
    }

    .slider-viewport .slide .review-stars {
        color: var(--c-yellow);
        font-size: 1.1rem;
        letter-spacing: 3px;
        margin-bottom: 14px;
    }

    .slider-viewport .slide .review-text {
        font-size: 0.98rem;
        color: var(--c-text-dark);
        margin-bottom: 18px;
        line-height: 1.65;
    }

    .slider-viewport .slide .review-text strong {
        color: var(--c-green-primary);
    }

    .slider-viewport .slide .review-meta {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding-top: 14px;
        border-top: 1px solid rgba(0,0,0,0.06);
        font-size: 0.82rem;
    }

    .slider-viewport .slide .review-author {
        font-weight: 700;
        color: var(--c-text-dark);
    }

    .slider-viewport .slide .review-date {
        color: var(--c-muted);
    }

    /* Controles: prev / dots / next en una sola fila debajo */
    .slider-controls {
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 14px;
        margin-top: 22px;
        padding: 0 18px;
    }

    .slider-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border-radius: 50%;
        background: white;
        color: var(--c-green-primary);
        border: 1.5px solid var(--c-green-primary);
        box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        cursor: pointer;
        transition: all var(--t);
        flex-shrink: 0;
    }

    .slider-btn:hover,
    .slider-btn:active {
        background: var(--c-green-primary);
        color: white;
    }

    .slider-dots {
        display: flex;
        gap: 8px;
        align-items: center;
    }

    .slider-dots .sdot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: rgba(0,0,0,0.2);
        border: none;
        padding: 0;
        cursor: pointer;
        transition: all var(--t);
    }

    .slider-dots .sdot.is-active {
        background: var(--c-green-primary);
        width: 24px;
        border-radius: 4px;
    }

    .product-footer {
        margin-top: 24px;
    }

    .product-footer .product-cta {
        width: 100%;
        min-width: 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
        padding-bottom: 36px;
        text-align: center;
    }

    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .footer-brand .logo-wrap {
        justify-content: center;
    }

    .footer-brand p {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .footer-col ul {
        align-items: center;
    }

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

    .footer-bottom .container {
        padding: 0 18px;
    }

    .float-cta {
        width: 56px;
        height: 56px;
        bottom: 18px;
        right: 18px;
    }

    .float-cta svg {
        width: 28px;
        height: 28px;
    }

    .float-tooltip {
        display: none;
    }

    .header-inner {
        padding: 12px 18px;
    }

    .logo-img {
        width: 36px;
        height: 36px;
    }

    .logo-text {
        font-size: 0.95rem;
    }

    .btn-header {
        padding: 10px 16px;
        font-size: 0.85rem;
    }

    .faq-item summary {
        padding: 18px 20px;
        font-size: 0.95rem;
    }

    .faq-answer {
        padding: 0 20px 20px;
        font-size: 0.92rem;
    }
}

@media (max-width: 380px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }
}

/* ====== ANIMACIONES ON SCROLL (basadas en intersección visual con CSS only) ====== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ====== UTILIDADES ====== */
::selection {
    background: var(--c-green-primary);
    color: white;
}

/* ====== BADGE ECO (icono de reciclaje) ====== */
.eco-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--c-green-soft);
    padding: 10px 16px;
    border-radius: 999px;
    border: 1.5px solid var(--c-eco);
    margin-top: 18px;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--c-green-dark);
    letter-spacing: 0.3px;
}

.eco-badge img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    flex-shrink: 0;
}

.eco-badge-floating {
    position: absolute;
    top: 40px;
    left: -10px;
    background: white;
    padding: 12px 18px;
    border-radius: 999px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 3;
    transform: rotate(-8deg);
    font-weight: 700;
    font-size: 0.85rem;
    color: var(--c-green-dark);
    border: 2px solid var(--c-eco);
    line-height: 1.15;
}

.eco-badge-floating img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    flex-shrink: 0;
}

/* ====== ICONO AURICULAR (CTA asesoramiento) ====== */
.icon-headset {
    flex-shrink: 0;
}

/* ====== BOTÓN FLOTANTE (azul asesoramiento) ====== */
.float-cta {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 99;
    width: 64px;
    height: 64px;
    background: var(--c-blue);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4), 0 0 0 0 rgba(37, 99, 235, 0.4);
    transition: transform var(--t), box-shadow var(--t);
}

.float-cta:hover {
    transform: scale(1.08);
    box-shadow: 0 12px 32px rgba(37, 99, 235, 0.5);
}

.float-cta:hover .float-tooltip {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

.float-pulse {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--c-blue);
    animation: float-pulse 2s infinite;
    z-index: -1;
}

@keyframes float-pulse {
    0% { transform: scale(1); opacity: 0.5; }
    100% { transform: scale(1.6); opacity: 0; }
}

.float-tooltip {
    position: absolute;
    right: calc(100% + 12px);
    top: 50%;
    transform: translateY(-50%) translateX(8px);
    background: var(--c-text-dark);
    color: white;
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all var(--t);
}

.float-tooltip::after {
    content: '';
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: var(--c-text-dark);
}