:root {
    --color-bg: #020617; /* Deep dark blue */
    --color-bg-card: #0f172a;
    --color-text: #ffffff;
    --color-text-muted: #94a3b8;
    --color-accent: #38bdf8; /* Cyan/Light Blue */
    --color-accent-secondary: #0ea5e9;
    --color-cta: #ef4444; /* Red/Orange for CTA */
    
    --font-heading: 'Sora', sans-serif;
    --font-body: 'Manrope', sans-serif;
    
    --container-width: 500px; /* Mobile-first vertical constraint */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 3rem;
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    line-height: 1.5;
    overflow-x: hidden;
    background-image: radial-gradient(circle at top center, #1e293b 0%, #020617 50%);
    background-attachment: fixed;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
}

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

section {
    padding: var(--spacing-md) 0;
}

h1, h2, h3 {
    font-family: var(--font-heading);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 1.75rem; /* Mobile friendly */
    font-weight: 700;
    text-align: center;
    color: #fff;
}

h2 {
    font-size: 1.5rem;
    text-align: center;
    color: #fff;
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.2rem;
    color: var(--color-accent);
}

p {
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
    color: var(--color-text-muted);
}

/* Buttons */
.btn {
    display: block;
    width: 100%;
    padding: 1rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    text-align: center;
    font-family: var(--font-heading);
    color: #ffffff !important;
}

.btn-primary {
    background: linear-gradient(to right, #34d399, #10b981);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(52, 211, 153, 0.4);
    border: 1px solid #6ee7b7;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 211, 153, 0.6);
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* Hero Section */
.hero {
    text-align: center;
    padding-top: 2rem;
}

.logo-area {
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
}

.logo-highlight {
    color: var(--color-accent);
}

.headline {
    margin: 0 auto 1rem;
}

.headline span {
    color: var(--color-accent);
}

.subheadline {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin: 0 auto 2rem;
}

/* Video Container - Vertical 9:16 */
.video-container {
    position: relative;
    width: 100%;
    margin: 0 auto 2rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    background: #000;
    border: 1px solid #334155;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Cards (Testimonials, Features) */
.card-stack {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.card {
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.8) 0%, rgba(2, 6, 23, 0.8) 100%);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid #1e293b;
    backdrop-filter: blur(10px);
}

/* Testimonials */
.carousel-slide blockquote {
    font-style: italic;
    margin-bottom: 1rem;
    color: #cbd5e1;
}

.carousel-slide cite {
    font-weight: 700;
    color: var(--color-accent);
    display: block;
    margin-top: 0.5rem;
}

/* Methodology */
.feature-card h3 {
    margin-bottom: 0.5rem;
}

/* John IA Section */
.john-ia {
    background: radial-gradient(circle at center, #1e293b 0%, #020617 100%);
    border-radius: 16px;
    margin: 2rem 0;
    padding: 2rem 1rem;
    border: 1px solid #334155;
}

.ia-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 2rem;
}

.ia-feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255,255,255,0.05);
    padding: 1rem;
    border-radius: 8px;
    text-align: left;
}

.ia-feature img {
    width: 40px;
    height: 40px;
}

.ia-feature p {
    margin: 0;
    color: #fff;
    font-weight: 500;
}

/* Comparison */
.comparison-table {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.comparison-column {
    padding: 1.5rem;
    border-radius: 12px;
    background: #0f172a;
}

.comparison-column.eles {
    border-top: 4px solid #ef4444;
}

.comparison-column.nos {
    border-top: 4px solid var(--color-accent);
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    box-shadow: 0 10px 30px rgba(56, 189, 248, 0.1);
}

.comparison-column ul {
    list-style: none;
}

.comparison-column li {
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
}

/* Pricing */
.price-box {
    background: #0f172a;
    padding: 2rem;
    border-radius: 16px;
    text-align: center;
    border: 1px solid var(--color-accent);
}

.installments {
    font-size: 1.2rem;
    color: #fff;
}

.price-value {
    font-size: 3.5rem;
    color: var(--color-accent);
    margin: 0.5rem 0;
}

.full-price {
    font-size: 0.9rem;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Comparison Section */
.comparison {
    padding: 4rem 0;
    background-color: #020617; /* Very dark background */
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.comparison-card {
    border-radius: 16px;
    padding: 2.5rem;
    color: #fff;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.comparison-card:hover {
    transform: translateY(-5px);
}

.comparison-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.3;
    z-index: 1;
}

.comparison-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
    z-index: 1;
}

.comparison-card li {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    font-size: 1rem;
    line-height: 1.5;
    color: #cbd5e1;
    align-items: flex-start;
}

.comparison-card li:last-child {
    margin-bottom: 0;
}

.comparison-card .icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* For You Card (Blue) */
.comparison-card.is-for-you {
    background: linear-gradient(135deg, rgba(15, 23, 42, 1) 0%, rgba(30, 41, 59, 1) 100%);
    border: 1px solid rgba(56, 189, 248, 0.2);
    box-shadow: 0 10px 30px rgba(56, 189, 248, 0.05);
}

/* Subtle Blue Gradient Overlay */
.comparison-card.is-for-you::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.1), transparent 60%);
    z-index: 0;
}

.comparison-card.is-for-you h3 .highlight-blue {
    color: #38bdf8; /* Bright Blue */
    display: block;
}

.comparison-card.is-for-you .icon.check {
    color: #38bdf8;
}

/* Not For You Card (Red) */
.comparison-card.not-for-you {
    background: linear-gradient(135deg, rgba(20, 10, 10, 1) 0%, rgba(40, 20, 20, 1) 100%);
    border: 1px solid rgba(239, 68, 68, 0.2);
    box-shadow: 0 10px 30px rgba(239, 68, 68, 0.05);
}

/* Subtle Red Gradient Overlay */
.comparison-card.not-for-you::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top right, rgba(239, 68, 68, 0.1), transparent 60%);
    z-index: 0;
}

.comparison-card.not-for-you h3 .highlight-red {
    color: #ef4444; /* Bright Red */
    display: block;
}

.comparison-card.not-for-you .icon.cross {
    color: #ef4444;
}

/* Responsive Desktop */
@media (min-width: 992px) {
    .comparison-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
        align-items: stretch; /* Make cards same height */
    }

    .comparison-card {
        padding: 3rem;
    }

    .comparison-card h3 {
        font-size: 1.8rem;
    }
}

/* =========================================
   DESKTOP RESPONSIVE (Horizontal Layout)
   ========================================= */

@media (min-width: 992px) {
    :root {
        --container-width: 1100px; /* Wider container for desktop */
        --spacing-md: 4rem;
    }

    /* Typography Adjustments */
    h1 {
        font-size: 3rem;
        text-align: left;
    }

    h2 {
        font-size: 2.5rem;
    }

    .subheadline {
        text-align: left;
        margin-left: 0;
        font-size: 1.25rem;
    }

    /* Hero Section Grid */
    .hero {
        padding-top: 4rem;
    }

    .hero-layout {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 2rem;
        text-align: center;
    }

    .hero-content {
        display: none;
    }

    .cta-container {
        width: 100%;
        max-width: 400px;
        margin-top: 2rem;
    }

    .video-wrapper {
        width: 100%;
        display: flex;
        justify-content: center;
    }

    .video-container {
        width: 100%;
        max-width: 380px; /* Keep mobile phone width for the vertical video */
        margin: 0;
    }

    .logo-area {
        justify-content: flex-start;
    }

    /* Grid Layouts for Content */
    .card-stack {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }

    .ia-features {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Comparison Table Horizontal */
    .comparison-table {
        flex-direction: row;
        align-items: stretch;
    }

    .comparison-column {
        flex: 1;
    }
}

/* Carousel Styles */
.carousel-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
    overflow: hidden;
}

.carousel-track-wrapper {
    overflow: hidden;
    width: 100%;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
    width: 100%;
}

.carousel-slide {
    min-width: 100%;
    flex: 0 0 100%;
    /* No opacity fade, simple slide */
}

.video-placeholder {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: 8px;
    border: 1px solid #334155;
}

.slide-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 40px;
    background: #ff0000;
    color: white;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
    cursor: pointer;
}

.play-button:hover {
    background: #cc0000;
}

.slide-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #fff;
    text-align: left;
}

.slide-content p {
    font-size: 1rem;
    color: #cbd5e1;
    line-height: 1.6;
    text-align: left;
}

/* Carousel Buttons */
.carousel-btn {
    position: absolute;
    top: 35%; /* Align with video center approx */
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    font-size: 3rem;
    cursor: pointer;
    z-index: 10;
    transition: color 0.3s;
    padding: 0 1rem;
}

.carousel-btn:hover {
    color: #fff;
}

.prev-btn {
    left: -20px;
}

.next-btn {
    right: -20px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--color-text-muted);
}

/* Methodology Section Specifics */
.method-image-container {
    width: 100%;
    margin: 2rem 0;
    text-align: center;
}

.method-img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.1); 
}

.subsection-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
    color: #fff;
}

.text-highlight {
    color: #38bdf8; /* Light blue highlight */
}

/* Feature Card Specifics to match image */
.feature-card h3 {
    color: #38bdf8; /* Cyan/Blue title */
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.feature-card p {
    color: #cbd5e1; /* Light grey text */
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Desktop adjustments for Methodology */
@media (min-width: 992px) {
    .features-grid-desktop {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
    
    .subsection-title {
        text-align: left;
        font-size: 1.8rem;
        margin-top: 3rem;
    }
}

.highlight-red {
    color: #ef4444;
}

/* Guarantee Text Section */
.guarantee-text {
    margin: 2rem 0;
    font-size: 1.1rem;
    color: #fff;
}

.guarantee-text span {
    color: var(--color-accent);
}

/* Deliverables Section (O que você vai receber) */
.deliverables-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
}

.deliverable-card {
    background-color: #0f172a; /* Dark card background */
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #1e293b;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.deliverable-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    border-color: #38bdf8;
}

.card-top {
    display: flex;
    flex-direction: column;
}

.card-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.card-text {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-text h3 {
    font-size: 1.25rem;
    color: #fff;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.card-text p {
    font-size: 0.95rem;
    color: #cbd5e1;
    line-height: 1.5;
    margin-bottom: 0;
}

/* Expandable Card Specifics */
.expand-btn {
    background: none;
    border: none;
    color: #38bdf8;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    padding: 0;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: color 0.2s;
}

.expand-btn:hover {
    color: #7dd3fc;
}

.expand-btn .arrow {
    font-size: 0.7rem;
    transition: transform 0.3s ease;
}

.expand-btn[aria-expanded="true"] .arrow {
    transform: rotate(180deg);
}

.card-content {
    background-color: #0f172a;
    border-top: 1px solid #1e293b;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-in-out, padding 0.3s ease, opacity 0.3s ease;
    opacity: 0;
}

.card-content.visible {
    max-height: 2000px; /* Arbitrary large height for transition */
    padding: 1.5rem;
    opacity: 1;
}

.lesson-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.lesson-list li {
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
    color: #cbd5e1;
    line-height: 1.5;
}

.lesson-list li strong {
    color: #fff;
    display: block;
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.lesson-list li:last-child {
    margin-bottom: 0;
}

/* Full Width Card Specifics */
.full-width-card .card-img {
    max-height: 300px;
    object-fit: cover;
    object-position: center;
}

/* Desktop Responsiveness for Deliverables */
@media (min-width: 768px) {
    .deliverables-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .full-width-card {
        grid-column: 1 / -1;
    }
}

@media (min-width: 992px) {
    .deliverables-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .full-width-card {
        grid-column: 1 / -1;
        display: grid;
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
    
    .full-width-card .card-img {
        height: 100%;
        max-height: none;
    }
    
    .full-width-card .card-text {
        padding: 3rem;
    }
}

/* Polyglot Methodology Section */
.polyglot-methodology {
    padding: 4rem 0;
    background-color: #020617; /* Very dark background, almost black */
}

.polyglot-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.polyglot-card {
    background-color: #0f172a;
    border: 1px solid #1e293b;
    border-radius: 8px;
    padding: 2rem;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.polyglot-card:hover {
    border-color: #38bdf8;
    transform: translateY(-5px);
}

.icon-box {
    width: 48px;
    height: 48px;
    background-color: rgba(56, 189, 248, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: #38bdf8; /* Icon color */
}

.polyglot-card h3 {
    color: #38bdf8;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.polyglot-card p {
    color: #cbd5e1;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0;
}

/* Desktop Responsiveness for Polyglot Grid */
@media (min-width: 992px) {
    .polyglot-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
}

/* John IA Section */
.john-ia-section {
    padding: 4rem 0;
    background-color: #020617;
}

.ia-feature-box {
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 16px;
    padding: 2rem;
    background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.05), transparent 40%);
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.ia-text-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.ia-text-content .icon-box.star-icon {
    background-color: rgba(96, 165, 250, 0.1);
    color: #60a5fa;
    margin-bottom: 1.5rem;
}

.ia-text-content h3 {
    font-size: 1.5rem;
    color: #fff;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.ia-text-content p {
    color: #cbd5e1;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.ia-image-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.ia-image-item {
    background-color: #0f172a;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid #1e293b;
    text-align: center;
}

.ia-image-item img {
    width: 100%;
    height: auto;
    display: block;
}

.ia-image-item p {
    padding: 1rem;
    font-size: 0.9rem;
    color: #cbd5e1;
    margin: 0;
}

@media (min-width: 992px) {
    .ia-feature-box {
        flex-direction: row;
        align-items: flex-start; /* Align top */
        padding: 4rem;
    }
    
    .ia-text-content {
        flex: 1;
        padding-right: 3rem;
        position: sticky;
        top: 2rem;
    }
    
    .ia-image-grid {
        flex: 1;
        grid-template-columns: repeat(2, 1fr);
    }
    
    .ia-text-content h3 {
        font-size: 2rem;
    }
}

.cta-button {
    display: block;
    width: 100%;
    padding: 1rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    text-align: center;
    font-family: var(--font-heading);
    background: linear-gradient(to right, #34d399, #10b981);
    color: #ffffff;
    box-shadow: 0 4px 15px rgba(52, 211, 153, 0.4);
    border: 1px solid #6ee7b7;
    margin-top: 1rem;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 211, 153, 0.6);
}

/* Offer Section */
.offer-section {
    padding: 4rem 0;
    background-color: var(--color-bg);
}

.offer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.offer-title {
    font-size: 1.5rem;
    color: #fff;
    margin-bottom: 2rem;
    line-height: 1.3;
}

.offer-title .highlight-blue {
    color: var(--color-accent);
}

.offer-list {
    list-style: none;
    padding: 0;
}

.offer-list li {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 0.8rem;
    display: flex;
    align-items: flex-start;
}

.offer-list .bullet {
    color: var(--color-accent);
    margin-right: 0.5rem;
    font-weight: bold;
    font-size: 1.2rem;
    line-height: 1;
}

.offer-list .offer-total {
    font-weight: 700;
    margin-top: 1.5rem;
    font-size: 1.1rem;
}

/* Offer Card */
.offer-card {
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    border: 1px solid #1e293b;
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.1);
}

.offer-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
}

.combined-logo {
    max-width: 100%;
    height: auto;
    max-height: 60px; /* Adjust as needed */
}

.offer-subtitle {
    color: var(--color-accent);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.offer-price {
    margin-bottom: 0.5rem;
    line-height: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.offer-price .installments {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: #fff;
}

.offer-price .amount {
    font-size: 4rem;
    font-weight: 800;
    color: var(--color-accent);
}

.offer-cash {
    color: #cbd5e1;
    font-size: 1rem;
    margin-bottom: 2rem;
}

/* Responsive */
@media (min-width: 992px) {
    .offer-grid {
        grid-template-columns: 1.2fr 1fr;
        align-items: center;
        gap: 4rem;
    }
    
    .offer-price {
        flex-direction: row;
        justify-content: center;
        gap: 1rem;
        align-items: center;
    }
    
    .offer-title {
        font-size: 2rem;
    }
}

/* Guarantee Section */
.guarantee-section {
    padding: 4rem 0;
    background-color: #020617; /* Match dark theme */
}

.guarantee-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.guarantee-title {
    font-size: 1.8rem;
    color: #fff;
    margin-bottom: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.guarantee-title .highlight-blue {
    color: var(--color-accent);
}

.guarantee-intro {
    font-weight: 600;
    color: #fff;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.guarantee-list {
    list-style: none;
    padding: 0;
}

.guarantee-list li {
    color: #cbd5e1;
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
}

.guarantee-list .dot {
    color: #fff;
    margin-right: 0.5rem;
    font-size: 1.2rem;
    line-height: 1;
}

.guarantee-subheading {
    color: var(--color-accent);
    font-size: 1.1rem;
    margin: 1.5rem 0 1rem;
}

.guarantee-subheading .normal-weight {
    color: #fff;
    font-weight: 400;
    display: block;
}

@media (min-width: 992px) {
    .guarantee-grid {
        grid-template-columns: 1.5fr 1fr;
        gap: 4rem;
        align-items: start;
    }

    .guarantee-title {
        font-size: 2.5rem;
    }
}

/* Argumentation Section */
.argumentation-section {
    padding: 4rem 0;
    background-color: #020617;
}

/* Owl Hero Card */
.owl-hero-card {
    background-image: url('assets/BG-Duolingo-Mobile.webp');
    background-size: cover;
    background-position: center;
    border-radius: 20px;
    padding: 3rem 1.5rem;
    margin-bottom: 4rem;
    position: relative;
    overflow: hidden;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.owl-content {
    position: relative;
    z-index: 2;
    max-width: 100%;
}

.owl-content h2 {
    font-size: 2rem;
    color: #fff;
    margin-bottom: 1rem;
    line-height: 1.2;
    text-align: left;
}

.owl-content p {
    font-size: 1rem;
    color: #cbd5e1;
    line-height: 1.5;
    text-align: left;
}

/* Problem Agitation */
.problem-agitation {
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2rem;
    color: #fff;
    margin-bottom: 1.5rem;
    text-align: left;
}

.intro-text {
    color: #94a3b8;
    margin-bottom: 2rem;
}

.traditional-method-block {
    margin-bottom: 2rem;
}

.method-title {
    color: #fff;
    margin-bottom: 1rem;
}

.emoji-list {
    list-style: none;
    padding: 0;
}

.emoji-list li {
    color: #cbd5e1;
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
}

.emphasis-line {
    color: #fff;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.emphasis-line .highlight-white {
    font-weight: 700;
    color: #fff;
}

.lead-in {
    color: #fff;
    font-size: 1.1rem;
}

/* ELES vs NOS Comparison */
.eles-nos-comparison {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 3rem;
}

.comparison-col {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding: 1.5rem;
    border-radius: 16px;
    transition: transform 0.3s ease;
}

/* ELES Column Styling */
.eles-col {
    background: linear-gradient(180deg, rgba(74, 29, 29, 0.15) 0%, rgba(15, 23, 42, 0.3) 100%);
    border: 1px solid rgba(127, 29, 29, 0.4);
}

/* NÓS Column Styling */
.nos-col {
    background: linear-gradient(180deg, rgba(30, 58, 95, 0.25) 0%, rgba(15, 23, 42, 0.3) 100%);
    border: 1px solid rgba(56, 189, 248, 0.4);
    box-shadow: 0 0 20px rgba(30, 58, 95, 0.1);
}

.header-pill {
    border-radius: 8px;
    padding: 1rem;
    text-align: center;
    font-weight: 800;
    text-transform: uppercase;
    color: #fff;
    letter-spacing: 2px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}

.eles-pill {
    background: linear-gradient(to right, #4a1d1d, #662525);
    border: 1px solid #7f1d1d;
    color: #fca5a5; /* Light red text for contrast */
}

.nos-pill {
    background: linear-gradient(to right, #1e3a5f, #2a4d7a);
    border: 1px solid #38bdf8;
    color: #e0f2fe; /* Light blue text */
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.3);
}

.comparison-items {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.item-card {
    background-color: #0f172a;
    border-radius: 8px;
    padding: 1rem;
    color: #cbd5e1;
    font-size: 0.95rem;
    text-align: center;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60px;
}

/* ELES Items: Muted, negative feel */
.eles-col .item-card {
    border: 1px solid rgba(127, 29, 29, 0.3);
    color: #9ca3af;
}

/* NÓS Items: Bright, positive feel */
.nos-col .item-card {
    border: 1px solid rgba(56, 189, 248, 0.4);
    background: linear-gradient(to right, rgba(30, 58, 95, 0.3), rgba(15, 23, 42, 0.5));
    color: #fff;
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.nos-col .item-card:hover {
    border-color: #38bdf8;
    transform: translateX(5px);
}

/* Desktop Responsive */
@media (min-width: 992px) {
    .owl-hero-card {
        background-image: url('assets/BG-Duolingo.webp');
        padding: 4rem;
        min-height: 500px;
        justify-content: center;
    }

    .owl-content {
        max-width: 50%;
    }

    .owl-content h2 {
        font-size: 3rem;
    }

    .problem-agitation {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
        align-items: start;
    }

    .section-title {
        font-size: 3rem;
    }

    .eles-nos-comparison {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
    
    .comparison-col {
        padding: 2.5rem;
    }
}

/* About Section */
.about-section {
    padding: 4rem 0;
    background-color: #020617;
}

.cta-response-card {
    background-color: #0f172a;
    border: 1px solid #1e293b;
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 4rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.cta-response-card h2 {
    font-size: 1.8rem;
    color: #fff;
    margin-bottom: 1.5rem;
}

.cta-content p {
    color: #cbd5e1;
    margin-bottom: 1.5rem;
    font-size: 1rem;
    line-height: 1.6;
}

.cta-content .highlight-text {
    color: #fff;
    font-weight: 700;
}

/* Bio Section */
.bio-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
}

.bio-content {
    position: relative;
    z-index: 2;
    /* No background on mobile wrapper, moving to separate div */
}

.bio-text {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.bio-text h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.bio-text p {
    color: #cbd5e1;
    line-height: 1.6;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.bio-text .cta-button {
    width: 100%;
    margin-top: 1rem;
}

.bio-mobile-img {
    display: block;
    width: 100%;
    height: auto;
    margin-top: 2rem;
    border-radius: 0 0 20px 20px;
}

/* Desktop Responsive */
@media (min-width: 992px) {
    .cta-response-card {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 4rem;
        gap: 4rem;
    }

    .cta-response-card h2 {
        font-size: 2.5rem;
        flex: 1;
        margin-bottom: 0;
    }

    .cta-content {
        flex: 1.5;
    }

    /* Bio Section Desktop */
    .bio-content {
        background-image: url('assets/Vendas-IA-Bio.webp');
        background-position: center; /* Aligns image to top right */
        /* background-size: cover; Ensures image fills the area */
        background-repeat: no-repeat;
        min-height: 800px;
        display: flex;
        align-items: flex-start;
        padding: 6rem 0;
        width: 100%;
        position: relative;
    }

    .bio-mobile-img {
        display: none; /* Hide separate mobile image on desktop */
    }

    .bio-text {
        width: 55%; /* Slightly narrower to avoid overlap */
        padding-right: 4rem;
        z-index: 2;
        margin-top: 4rem; /* Push text down to align with subject's shoulder/space */
    }

    .bio-text h2 {
        font-size: 3rem;
    }

    .bio-text p {
        font-size: 1rem;
    }

    .bio-text .cta-button {
        width: auto;
        align-self: flex-start;
    }
}

/* FAQ Section */
.faq-section {
    padding: 4rem 0;
    background-color: #020617;
}

.faq-grid {
    display: flex;
    flex-direction: column-reverse; /* Support card at bottom on mobile */
    gap: 3rem;
}

/* Support Card */
.support-card {
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    border: 1px solid #334155;
    border-radius: 16px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

/* Pixel pattern overlay hint */
.support-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50px;
    background-image: radial-gradient(#334155 1px, transparent 1px);
    background-size: 10px 10px;
    opacity: 0.2;
}

.support-card h3 {
    font-size: 1.5rem;
    color: #fff;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.support-card p {
    color: #94a3b8;
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.support-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: #38bdf8; /* Light Blue */
    color: #fff;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    width: 100%;
    transition: background-color 0.2s;
}

.support-button:hover {
    background-color: #0ea5e9;
}

.whatsapp-icon {
    width: 20px;
    height: 20px;
}

/* FAQ Accordion */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background-color: #0f172a; /* Dark panel */
    border: 1px solid #1e293b;
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.2s;
}

.faq-item.active {
    border-color: #38bdf8;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: 1.5rem;
    text-align: left;
    color: #fff; /* White text */
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-body);
}

.chevron {
    width: 10px;
    height: 10px;
    border-right: 2px solid #38bdf8;
    border-bottom: 2px solid #38bdf8;
    transform: rotate(45deg);
    transition: transform 0.3s ease;
    margin-left: 1rem;
    flex-shrink: 0;
}

.faq-item.active .chevron {
    transform: rotate(-135deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background-color: #0f172a;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem 1.5rem;
    color: #aab2bd; /* Lighter gray answer */
    font-size: 0.95rem;
    margin: 0;
    line-height: 1.6;
}

/* Desktop Responsive */
@media (min-width: 992px) {
    .faq-grid {
        display: grid;
        grid-template-columns: 1fr 2fr; /* Left support, Right FAQ */
        gap: 3rem;
        align-items: start;
    }

    .support-card {
        position: sticky;
        top: 2rem;
        padding: 3rem;
        min-height: 400px;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .support-card h3 {
        font-size: 2rem;
    }
}

/* Footer */
footer {
    background-color: #020617; /* Very dark navy/black */
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid #1e293b; /* Optional subtle border */
}

.footer-title {
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.footer-copy {
    color: #94a3b8;
    font-size: 0.9rem;
    margin: 0;
}