/* ============================================
   DSI - Diagnostic Systemique Individuel
   Ipsys Consulting - Styles CSS
   ============================================ */

:root {
    --ink: #1a1a2e;
    --ink-light: #2d2d44;
    --paper: #faf9f7;
    --paper-warm: #f5f3ef;
    --accent: #8b5a2b;
    --accent-light: #c4956a;
    --accent-deep: #5c3d1e;
    --sage: #6b7c6b;
    --sage-light: #a8b5a8;
    --burgundy: #6b2d3c;
    --gold: #b8860b;
    --shadow: rgba(26, 26, 46, 0.08);
    --shadow-deep: rgba(26, 26, 46, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', sans-serif;
    background: var(--paper);
    color: var(--ink);
    line-height: 1.7;
    font-size: 17px;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5 {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.4rem; }

p {
    margin-bottom: 1.5rem;
}

.lead {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--ink-light);
}

.serif {
    font-family: 'Cormorant Garamond', serif;
}

.italic {
    font-style: italic;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 6rem 0;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(250, 249, 247, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--shadow);
    transition: all 0.3s ease;
}

nav.scrolled {
    box-shadow: 0 4px 30px var(--shadow);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--ink);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.logo-img-footer {
    height: 50px;
    width: 50px;
    object-fit: contain;
}

.logo-symbol {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent), var(--accent-deep));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
}

/* Ipsys Consulting reference banner */
.ipsys-banner {
    background: var(--paper-warm);
    border-bottom: 1px solid var(--shadow);
    padding: 0.5rem 2rem;
    font-size: 0.85rem;
    text-align: center;
    height: 33px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ipsys-banner a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.ipsys-banner a:hover {
    text-decoration: underline;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--ink-light);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-cta {
    background: var(--ink);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: var(--accent-deep);
    transform: translateY(-2px);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--ink);
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 140px; /* Fixed nav (~100px with 2rem padding) + spacing */
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 55%;
    height: 100%;
    background: linear-gradient(135deg, var(--paper-warm) 0%, #ebe7e0 100%);
    clip-path: polygon(15% 0, 100% 0, 100% 100%, 0% 100%);
    z-index: -1;
}

.hero-pattern {
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    width: 400px;
    height: 400px;
    opacity: 0.15;
    z-index: -1;
}

.hero-pattern svg {
    width: 100%;
    height: 100%;
}

.hero-content {
    max-width: 650px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px var(--shadow);
    animation: fadeInUp 0.8s ease;
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--sage);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.2); }
}

.hero h1 {
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero h1 span {
    color: var(--accent);
}

.hero .lead {
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s both;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--ink);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-deep);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px var(--shadow-deep);
}

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

.btn-secondary:hover {
    background: var(--ink);
    color: white;
    transform: translateY(-3px);
}

.btn-accent {
    background: var(--accent);
    color: white;
}

.btn-accent:hover {
    background: var(--accent-deep);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(139, 90, 43, 0.3);
}

/* Paradox Quote */
.paradox-section {
    background: var(--ink);
    color: white;
    text-align: center;
    padding: 5rem 2rem;
    position: relative;
    overflow: hidden;
}

.paradox-section::before {
    content: '"';
    position: absolute;
    top: 1rem;
    left: 5%;
    font-family: 'Cormorant Garamond', serif;
    font-size: 15rem;
    color: rgba(255,255,255,0.05);
    line-height: 1;
}

.paradox-quote {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-style: italic;
    max-width: 900px;
    margin: 0 auto 1.5rem;
    line-height: 1.5;
}

.paradox-author {
    font-size: 0.95rem;
    color: var(--accent-light);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* Value Proposition */
.value-section {
    background: white;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-top: 4rem;
}

.value-card {
    text-align: center;
    padding: 2.5rem 2rem;
    border-radius: 16px;
    background: var(--paper);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--gold));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.value-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px var(--shadow-deep);
}

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

.value-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--accent-light), var(--accent));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    transform: rotate(-5deg);
    transition: transform 0.3s ease;
}

.value-card:hover .value-icon {
    transform: rotate(0deg) scale(1.1);
}

.value-card h4 {
    margin-bottom: 1rem;
    color: var(--ink);
}

.value-card p {
    color: var(--ink-light);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* Products Section */
.products-section {
    background: linear-gradient(180deg, var(--paper) 0%, var(--paper-warm) 100%);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-header .overline {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
}

.section-header h2 {
    margin-bottom: 1.5rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 10px 40px var(--shadow);
    transition: all 0.4s ease;
    position: relative;
}

.product-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 25px 60px var(--shadow-deep);
}

.product-card.featured {
    border: 3px solid var(--accent);
}

.product-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--accent);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.product-header {
    padding: 2.5rem 2rem 1.5rem;
    background: linear-gradient(135deg, var(--paper-warm) 0%, white 100%);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.product-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.product-card:nth-child(1) .product-icon {
    background: linear-gradient(135deg, var(--sage-light), var(--sage));
    color: white;
}

.product-card:nth-child(2) .product-icon {
    background: linear-gradient(135deg, var(--accent-light), var(--accent));
    color: white;
}

.product-card:nth-child(3) .product-icon {
    background: linear-gradient(135deg, var(--burgundy), #4a1f2a);
    color: white;
}

.product-header h3 {
    margin-bottom: 0.5rem;
}

.product-header .tagline {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.1rem;
    font-style: italic;
    color: var(--ink-light);
}

.product-body {
    padding: 2rem;
}

.product-description {
    color: var(--ink-light);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.product-features {
    list-style: none;
    margin-bottom: 2rem;
}

.product-features li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    color: var(--ink-light);
}

.product-features li::before {
    content: '\2192';
    color: var(--accent);
    font-weight: 700;
    flex-shrink: 0;
}

.product-audience {
    background: var(--paper);
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.product-audience .label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 0.25rem;
}

.product-audience .target {
    font-weight: 600;
    color: var(--ink);
}

.product-card .btn {
    width: 100%;
    justify-content: center;
}

/* Process Section */
.process-section {
    background: white;
    position: relative;
}

.process-timeline {
    position: relative;
    max-width: 900px;
    margin: 4rem auto 0;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-light), var(--accent));
    transform: translateX(-50%);
}

.process-step {
    display: flex;
    align-items: center;
    margin-bottom: 3rem;
    position: relative;
}

.process-step:nth-child(even) {
    flex-direction: row-reverse;
}

.process-step:nth-child(even) .process-content {
    text-align: right;
    padding-right: 4rem;
    padding-left: 0;
}

.process-content {
    flex: 1;
    padding-left: 4rem;
}

.process-number {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.4rem;
    font-weight: 700;
    z-index: 2;
    box-shadow: 0 4px 20px rgba(139, 90, 43, 0.3);
}

.process-content h4 {
    margin-bottom: 0.5rem;
    color: var(--ink);
}

.process-content p {
    color: var(--ink-light);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* Methodology Section */
.methodology-section {
    background: var(--ink);
    color: white;
    position: relative;
    overflow: hidden;
}

.methodology-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 90, 43, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.methodology-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.methodology-content h2 {
    margin-bottom: 1.5rem;
}

.methodology-content .lead {
    color: rgba(255,255,255,0.8);
    margin-bottom: 2rem;
}

.methodology-list {
    list-style: none;
}

.methodology-list li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.methodology-list li:last-child {
    border-bottom: none;
}

.methodology-list .icon {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.methodology-list .text h5 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.methodology-list .text p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 0;
}

.methodology-visual {
    position: relative;
}

.framework-card {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 2.5rem;
}

.framework-card h4 {
    margin-bottom: 1.5rem;
    color: var(--accent-light);
}

.framework-list {
    display: grid;
    gap: 1rem;
}

.framework-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.framework-item:hover {
    background: rgba(255,255,255,0.1);
    transform: translateX(8px);
}

.framework-item .bullet {
    width: 8px;
    height: 8px;
    background: var(--accent-light);
    border-radius: 50%;
}

.framework-item span {
    font-size: 0.95rem;
}

/* Insight Section */
.insight-section {
    background: linear-gradient(135deg, var(--paper-warm) 0%, white 100%);
    text-align: center;
}

.insight-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    max-width: 900px;
    margin: 3rem auto 0;
}

.insight-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px var(--shadow);
    text-align: left;
    transition: all 0.3s ease;
}

.insight-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px var(--shadow-deep);
}

.insight-card h4 {
    color: var(--accent);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.insight-card p {
    color: var(--ink-light);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* FAQ Section */
.faq-section {
    background: white;
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 1000px;
    margin: 3rem auto 0;
}

.faq-item {
    padding: 1.5rem 2rem;
    background: var(--paper);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.faq-item:hover {
    background: var(--paper-warm);
}

.faq-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--ink);
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.faq-item h4::before {
    content: '?';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    font-size: 0.85rem;
    font-weight: 700;
    flex-shrink: 0;
}

.faq-item p {
    color: var(--ink-light);
    font-size: 0.9rem;
    margin-bottom: 0;
    padding-left: 2.25rem;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--accent-deep) 0%, var(--ink) 100%);
    color: white;
    text-align: center;
    padding: 6rem 2rem;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    margin-bottom: 1rem;
}

.cta-section .lead {
    color: rgba(255,255,255,0.8);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-primary {
    background: white;
    color: var(--ink);
}

.cta-section .btn-primary:hover {
    background: var(--paper);
}

.cta-section .btn-secondary {
    border-color: white;
    color: white;
}

.cta-section .btn-secondary:hover {
    background: white;
    color: var(--ink);
}

/* Footer */
footer {
    background: var(--ink);
    color: white;
    padding: 4rem 2rem 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto 3rem;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 1rem;
}

.footer-brand .logo-symbol {
    background: var(--accent);
}

.footer-brand p {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
}

.footer-links h5 {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    color: white;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-bottom p {
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
    margin-bottom: 0;
}

.footer-bottom a {
    color: rgba(255,255,255,0.5);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: var(--accent-light);
}

/* Product Detail Pages */
.product-hero {
    padding-top: 150px; /* Fixed nav (~100px with 2rem padding) + spacing */
    padding-bottom: 5rem;
    background: linear-gradient(135deg, var(--paper) 0%, var(--paper-warm) 100%);
    position: relative;
}

.product-hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.product-hero-text .breadcrumb {
    font-size: 0.85rem;
    color: var(--ink-light);
    margin-bottom: 1rem;
}

.product-hero-text .breadcrumb a {
    color: var(--accent);
    text-decoration: none;
}

.product-hero-text h1 {
    margin-bottom: 1.5rem;
}

.product-hero-text .lead {
    margin-bottom: 2rem;
}

.product-hero-visual {
    position: relative;
}

.product-preview {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 25px 60px var(--shadow-deep);
    transform: rotate(2deg);
}

.product-preview-header {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.product-preview-header span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.product-preview-header span:nth-child(1) { background: #ff5f57; }
.product-preview-header span:nth-child(2) { background: #febc2e; }
.product-preview-header span:nth-child(3) { background: #28c840; }

.product-preview-content {
    background: var(--paper);
    border-radius: 12px;
    padding: 1.5rem;
}

.product-preview-line {
    height: 12px;
    background: linear-gradient(90deg, var(--sage-light) 0%, transparent 100%);
    border-radius: 6px;
    margin-bottom: 0.75rem;
}

.product-preview-line:nth-child(2) { width: 80%; }
.product-preview-line:nth-child(3) { width: 60%; }
.product-preview-line:nth-child(4) { width: 90%; }
.product-preview-line:nth-child(5) { width: 70%; }

/* Chapter Preview */
.chapters-section {
    background: white;
}

.chapters-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.chapter-card {
    background: var(--paper);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}

.chapter-card:hover {
    transform: translateY(-5px);
    border-left-color: var(--accent);
    box-shadow: 0 15px 40px var(--shadow);
}

.chapter-number {
    font-family: 'Cormorant Garamond', serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-light);
    opacity: 0.5;
    margin-bottom: 0.5rem;
}

.chapter-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.chapter-card p {
    font-size: 0.9rem;
    color: var(--ink-light);
    margin-bottom: 0;
}

/* Scroll animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .value-grid,
    .products-grid,
    .chapters-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .product-hero-content {
        grid-template-columns: 1fr;
    }

    .product-hero-visual {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(250, 249, 247, 0.98);
        flex-direction: column;
        padding: 1.5rem 2rem;
        gap: 1rem;
        box-shadow: 0 10px 30px var(--shadow-deep);
        border-bottom: 1px solid var(--shadow);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: 0.75rem 0;
        border-bottom: 1px solid var(--shadow);
    }

    .nav-links li:last-child a {
        border-bottom: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-bg {
        width: 100%;
        clip-path: none;
        opacity: 0.5;
    }

    .value-grid,
    .products-grid,
    .faq-grid,
    .insight-cards,
    .chapters-grid {
        grid-template-columns: 1fr;
    }

    .process-timeline::before {
        left: 25px;
    }

    .process-step,
    .process-step:nth-child(even) {
        flex-direction: column;
        align-items: flex-start;
        padding-left: 70px;
    }

    .process-number {
        left: 0;
        transform: none;
    }

    .process-content,
    .process-step:nth-child(even) .process-content {
        padding: 0;
        text-align: left;
    }

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

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* Focus styles for accessibility */
a:focus,
button:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}