/* ========================================
    Stable System Lab - Stylesheet
    Aesthetic: Systematic Elegance
    ======================================== */

/* CSS Variables */
:root {
    /* Colors */
    --slate-900: #0f1419;
    --slate-800: #1a1f2e;
    --slate-700: #2d3548;
    --slate-600: #4a5568;
    --slate-500: #64748b;
    --slate-400: #94a3b8;
    --slate-300: #cbd5e1;

    --cream-100: #faf9f7;
    --cream-200: #f5f3ef;
    --cream-300: #e8e4dd;

    --sage: #7c9885;
    --sage-light: #a3bfaa;
    --sage-dark: #5a7a63;

    --terracotta: #c9a87c;
    --terracotta-light: #ddc4a0;

    /* Typography */
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 10rem;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(15, 20, 25, 0.05);
    --shadow-md: 0 4px 20px rgba(15, 20, 25, 0.08);
    --shadow-lg: 0 10px 40px rgba(15, 20, 25, 0.12);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--slate-700);
    background-color: var(--cream-100);
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
}

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

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 500;
    line-height: 1.2;
    color: var(--slate-800);
}

h1 { font-size: clamp(2.5rem, 6vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p {
    margin-bottom: 1rem;
}

/* Section Styles */
.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--sage);
    margin-bottom: var(--space-sm);
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--slate-500);
    max-width: 600px;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-header .section-subtitle {
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: 4px;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--slate-800);
    color: var(--cream-100);
}

.btn-primary:hover {
    background-color: var(--slate-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--slate-700);
    border: 1px solid var(--slate-300);
}

.btn-secondary:hover {
    border-color: var(--slate-700);
    background-color: var(--cream-200);
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.0625rem;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    transition: all var(--transition-base);
}

.nav.scrolled {
    background-color: rgba(250, 249, 247, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    padding: var(--space-sm) 0;
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 500;
    color: var(--slate-800);
}

.logo-suffix {
    font-family: var(--font-display);
    font-size: 1rem;
    font-style: italic;
    color: var(--sage);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-links a {
    font-size: 0.9375rem;
    color: var(--slate-600);
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--slate-800);
}

.nav-cta {
    padding: 0.625rem 1.25rem;
    background-color: var(--slate-800);
    color: var(--cream-100) !important;
    border-radius: 4px;
}

.nav-cta:hover {
    background-color: var(--slate-700) !important;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--slate-700);
    transition: all var(--transition-fast);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--cream-100);
    z-index: 999;
    padding-top: 100px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.mobile-menu-content a {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--slate-700);
}

.mobile-cta {
    margin-top: var(--space-md);
    padding: 0.875rem 2rem;
    background-color: var(--slate-800);
    color: var(--cream-100) !important;
    border-radius: 4px;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--space-3xl) 0 var(--space-2xl);
    overflow: hidden;
}

.hero-grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(to right, var(--cream-300) 1px, transparent 1px),
        linear-gradient(to bottom, var(--cream-300) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: 0.5;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--sage);
    margin-bottom: var(--space-md);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-title {
    margin-bottom: var(--space-md);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.1s forwards;
}

.hero-title-accent {
    color: var(--sage-dark);
    font-style: italic;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--slate-500);
    max-width: 500px;
    margin-bottom: var(--space-lg);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.2s forwards;
}

.hero-cta-group {
    display: flex;
    gap: var(--space-sm);
    opacity: 0;
    animation: fadeInUp 0.8s ease 0.3s forwards;
}

/* Hero Visual */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    animation: fadeIn 1s ease 0.5s forwards;
}

.system-diagram {
    position: relative;
    width: 400px;
    height: 400px;
}

.diagram-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.diagram-lines .line {
    stroke: var(--cream-300);
    stroke-width: 2;
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    animation: drawLine 1.5s ease forwards;
}

.line-1 { animation-delay: 0.8s; }
.line-2 { animation-delay: 1s; }
.line-3 { animation-delay: 1.2s; }
.line-4 { animation-delay: 1.4s; }

.diagram-node {
    position: absolute;
    width: 100px;
    height: 100px;
    background: var(--cream-100);
    border: 2px solid var(--cream-300);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    animation: popIn 0.5s ease forwards;
}

.node-1 { top: 0; left: 20px; animation-delay: 1.6s; }
.node-2 { top: 0; right: 20px; animation-delay: 1.7s; }
.node-3 { bottom: 0; left: 20px; animation-delay: 1.8s; }
.node-4 { bottom: 0; right: 20px; animation-delay: 1.9s; }

.node-icon {
    font-size: 1.5rem;
}

.node-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--slate-600);
}

.diagram-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    background: var(--sage);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--cream-100);
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    animation: popIn 0.6s ease 2s forwards;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    opacity: 0;
    animation: fadeIn 1s ease 2.5s forwards;
}

.hero-scroll-indicator span {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--slate-400);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--slate-300), transparent);
    animation: scrollPulse 2s ease infinite;
}

/* Problem Section */
.problem-section {
    padding: var(--space-2xl) 0;
    background-color: var(--slate-800);
    color: var(--cream-100);
}

.problem-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-xl);
    align-items: start;
}

.problem-section .section-title {
    color: var(--cream-100);
    font-style: italic;
}

.problem-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.problem-card {
    padding: var(--space-lg);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    transition: all var(--transition-base);
}

.problem-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.12);
}

.problem-number {
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--sage-light);
    margin-bottom: var(--space-sm);
}

.problem-card p {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--slate-300);
    margin: 0;
}

/* Services Section */
.services-section {
    padding: var(--space-3xl) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.service-card {
    position: relative;
    padding: var(--space-lg);
    background: var(--cream-100);
    border: 1px solid var(--cream-300);
    border-radius: 8px;
    transition: all var(--transition-base);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--sage-light);
}

.service-card.featured {
    background: var(--cream-200);
    border-color: var(--sage);
}

.service-card.featured::before {
    content: '';
    position: absolute;
    top: -1px;
    left: var(--space-lg);
    right: var(--space-lg);
    height: 3px;
    background: var(--sage);
    border-radius: 0 0 4px 4px;
}

.service-icon {
    width: 48px;
    height: 48px;
    color: var(--sage);
    margin-bottom: var(--space-md);
}

.service-title {
    font-family: var(--font-display);
    font-size: 1.375rem;
    margin-bottom: var(--space-sm);
}

.service-description {
    font-size: 0.9375rem;
    color: var(--slate-500);
    margin-bottom: var(--space-md);
}

.service-features {
    list-style: none;
    margin-bottom: var(--space-md);
}

.service-features li {
    position: relative;
    padding-left: 1.25rem;
    font-size: 0.875rem;
    color: var(--slate-600);
    margin-bottom: 0.5rem;
}

.service-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 6px;
    height: 6px;
    background: var(--sage);
    border-radius: 50%;
}

.service-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--sage-dark);
    padding: 0.25rem 0.75rem;
    background: rgba(124, 152, 133, 0.1);
    border-radius: 100px;
}

/* Audience Section */
.audience-section {
    padding: var(--space-3xl) 0;
    background: var(--cream-200);
}

.audience-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.audience-tab {
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--slate-500);
    background: transparent;
    border: 1px solid var(--cream-300);
    border-radius: 100px;
    transition: all var(--transition-base);
}

.audience-tab:hover {
    color: var(--slate-700);
    border-color: var(--slate-400);
}

.audience-tab.active {
    background: var(--slate-800);
    color: var(--cream-100);
    border-color: var(--slate-800);
}

.audience-panel {
    display: none;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
}

.audience-panel.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.audience-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.audience-info h3 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
}

.audience-info > p {
    font-size: 1.0625rem;
    color: var(--slate-500);
    margin-bottom: var(--space-lg);
}

.pain-points {
    margin-bottom: var(--space-lg);
}

.pain-points h4 {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--slate-600);
    margin-bottom: var(--space-sm);
}

.pain-points ul {
    list-style: none;
}

.pain-points li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: var(--slate-700);
}

.check-icon {
    color: var(--sage);
    font-weight: 600;
}

.outcome-card {
    padding: var(--space-xl);
    background: var(--cream-100);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.outcome-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.outcome-card h4 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.outcome-card p {
    font-size: 1rem;
    color: var(--slate-500);
    margin: 0;
}

/* Benefits Section */
.benefits-section {
    padding: var(--space-3xl) 0;
}

.benefits-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.benefit-item {
    text-align: center;
    padding: var(--space-lg);
}

.benefit-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    color: var(--sage);
}

.benefit-icon svg {
    width: 100%;
    height: 100%;
}

.benefit-item h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.benefit-item p {
    font-size: 0.9375rem;
    color: var(--slate-500);
    margin: 0;
}

/* About Section */
.about-section {
    padding: var(--space-3xl) 0;
    background: var(--slate-800);
    color: var(--cream-100);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.about-section .section-label {
    color: var(--sage-light);
}

.about-section .section-title {
    color: var(--cream-100);
}

.about-lead {
    font-size: 1.25rem;
    color: var(--cream-200);
    margin-bottom: var(--space-md);
}

.about-content p {
    color: var(--slate-400);
    margin-bottom: var(--space-md);
}

.about-values {
    margin-top: var(--space-xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.value-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.value-number {
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--sage-light);
}

.value-text {
    font-size: 1rem;
    color: var(--cream-200);
}

.about-visual {
    position: relative;
}

.about-image-container {
    position: relative;
}

.about-pattern {
    width: 100%;
    height: 400px;
    background:
        linear-gradient(135deg, var(--sage-dark) 0%, var(--sage) 100%);
    border-radius: 12px;
    opacity: 0.8;
}

.about-quote {
    position: absolute;
    bottom: -30px;
    left: -30px;
    right: 30px;
    padding: var(--space-lg);
    background: var(--cream-100);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
}

.about-quote blockquote {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-style: italic;
    color: var(--slate-700);
    margin: 0;
}

/* Testimonials Section */
.testimonials-section {
    padding: var(--space-3xl) 0;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.testimonial-card {
    padding: var(--space-lg);
    background: var(--cream-100);
    border: 1px solid var(--cream-300);
    border-radius: 8px;
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    box-shadow: var(--shadow-md);
}

.testimonial-content p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--slate-600);
    margin-bottom: var(--space-lg);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: var(--sage);
    color: var(--cream-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 500;
    color: var(--slate-700);
}

.author-title {
    font-size: 0.875rem;
    color: var(--slate-500);
}

/* FAQ Section */
.faq-section {
    padding: var(--space-3xl) 0;
    background: var(--cream-200);
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-2xl);
}

.faq-header p {
    color: var(--slate-500);
}

.faq-list {
    display: flex;
    flex-direction: column;
}

.faq-item {
    border-bottom: 1px solid var(--cream-300);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    font-size: 1.0625rem;
    font-weight: 500;
    color: var(--slate-700);
    text-align: left;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--sage-dark);
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--sage);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding-bottom: var(--space-md);
    font-size: 0.9375rem;
    color: var(--slate-500);
    line-height: 1.7;
}

/* CTA Section */
.cta-section {
    padding: var(--space-3xl) 0;
    background: linear-gradient(135deg, var(--sage-dark) 0%, var(--sage) 100%);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: var(--cream-100);
    margin-bottom: var(--space-md);
}

.cta-description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--space-lg);
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.9);
}

.cta-feature .check-icon {
    color: var(--cream-100);
}

.cta-section .btn-primary {
    background: var(--cream-100);
    color: var(--slate-800);
}

.cta-section .btn-primary:hover {
    background: var(--cream-200);
}

.cta-note {
    margin-top: var(--space-md);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.cta-note a {
    color: var(--cream-100);
    text-decoration: underline;
}

.cta-note a:hover {
    text-decoration: none;
}

/* Footer */
.footer {
    padding: var(--space-xl) 0;
    background: var(--slate-900);
    color: var(--slate-400);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

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

.footer-brand .logo-text {
    color: var(--cream-100);
}

.footer-tagline {
    margin-top: var(--space-xs);
    font-size: 0.875rem;
    color: var(--slate-500);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--slate-400);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--cream-100);
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--slate-500);
    margin: 0;
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes drawLine {
    to { stroke-dashoffset: 0; }
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes scrollPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* Scroll animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

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

    .hero-visual {
        display: none;
    }

    .problem-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .services-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

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

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

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

    .about-visual {
        order: -1;
    }

    .about-quote {
        position: relative;
        bottom: auto;
        left: auto;
        right: auto;
        margin-top: var(--space-md);
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .faq-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

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

    .mobile-menu {
        display: block;
    }

    .problem-cards {
        grid-template-columns: 1fr;
    }

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

    .cta-features {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }

    .hero-cta-group {
        flex-direction: column;
    }

    .hero-cta-group .btn {
        width: 100%;
    }

    .audience-tabs {
        flex-direction: column;
    }

    .audience-tab {
        width: 100%;
    }
}