/* ====================================
   Variables CSS - Charte Graphique
   ==================================== */
:root {
  /* Couleurs principales */
  --primary-blue: #2563eb;
  --primary-purple: #9333ea;
  --primary-dark: #1e293b;

  /* Dégradés */
  --gradient-primary: linear-gradient(135deg, #2563eb 0%, #9333ea 100%);
  --gradient-hero-bg: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(147, 51, 234, 0.05) 100%);

  /* Couleurs secondaires */
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;

  --purple-50: #faf5ff;
  --purple-100: #f3e8ff;
  --purple-600: #9333ea;
  --purple-700: #7e22ce;

  /* Neutres */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-900: #111827;

  /* Utilitaires */
  --white: #ffffff;
  --background: #ffffff;
  
  /* Ombres */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

  /* Typographie */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  
  /* Tailles de texte */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
}

/* ====================================
   Reset & Base Styles
   ==================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--gray-900);
  background: var(--background);
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

ul {
  list-style: none;
}

/* ====================================
   Container & Layout
   ==================================== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ====================================
   Typography Classes
   ==================================== */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ====================================
   Button Components
   ==================================== */
.btn-primary,
.btn-outline,
.btn-gradient,
.btn-purple {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: var(--text-base);
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
  text-align: center;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
}

.btn-outline:hover {
  background: var(--primary-blue);
  color: white;
}

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

.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

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

.btn-purple:hover {
  background: var(--purple-700);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--text-lg);
}

/* ====================================
   Icon Sizes
   ==================================== */
.icon-sm {
  width: 1.25rem;
  height: 1.25rem;
  stroke-width: 2;
  fill: none;
  stroke: currentColor;
}

.icon-md {
  width: 1.5rem;
  height: 1.5rem;
  stroke-width: 2;
  fill: none;
  stroke: currentColor;
}

.icon-lg {
  width: 2rem;
  height: 2rem;
  stroke-width: 2;
  fill: none;
  stroke: currentColor;
}

/* ====================================
   Card Components
   ==================================== */
.card-hover {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* ====================================
   Animations
   ==================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.2;
  }
  50% {
    opacity: 0.4;
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.8s ease-out forwards;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-on-scroll {
  opacity: 0;
}

/* ====================================
   HEADER - Navigation
   ==================================== */
.header-sticky {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  z-index: 1000;
  padding: 1rem 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--text-xl);
  font-weight: 700;
}

.logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.nav-desktop {
  display: none;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--gray-700);
  font-weight: 500;
  padding: 0.5rem 0;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-blue);
}

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

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

.nav-link-cta {
  background: var(--gradient-primary);
  color: white;
  padding: 0.5rem 1.25rem;
  border-radius: 0.5rem;
  font-weight: 600;
}

.nav-link-cta:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Burger Menu */
.burger-btn {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}

.burger-btn span {
  display: block;
  width: 1.5rem;
  height: 2px;
  background: var(--gray-900);
  transition: all 0.3s ease;
}

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

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

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

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  bottom: 0;
  background: white;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  z-index: 999;
  padding: 2rem;
  overflow-y: auto;
}

.mobile-menu.active {
  transform: translateX(0);
}

.mobile-menu ul {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.mobile-menu a {
  display: block;
  font-size: var(--text-lg);
  color: var(--gray-700);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--gray-200);
}

.mobile-menu a:hover {
  color: var(--primary-blue);
}

.mobile-menu .btn-primary {
  margin-top: 1rem;
  width: 100%;
}

/* ====================================
   HERO SECTION
   ==================================== */
.hero-section {
  padding: 8rem 0 6rem;
  background: var(--gradient-hero-bg);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--blue-50);
  color: var(--primary-blue);
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: var(--text-4xl);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--gray-900);
}

.hero-description {
  font-size: var(--text-lg);
  color: var(--gray-600);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 2rem;
}

.stat-item {
  text-align: left;
}

.stat-number {
  font-size: var(--text-4xl);
  font-weight: 800;
  display: inline;
}

.stat-prefix,
.stat-suffix {
  font-size: var(--text-3xl);
  font-weight: 800;
  display: inline;
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--gray-600);
  margin-top: 0.25rem;
}

.hero-image {
  position: relative;
}

.hero-card {
  background: white;
  border-radius: 1rem;
  box-shadow: var(--shadow-xl);
  padding: 2rem;
  position: relative;
  z-index: 10;
}

.hero-logo img {
  width: 80px;
  height: 80px;
  margin: 0 auto 1.5rem;
}

.hero-features {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 1rem;
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--gray-50);
  border-radius: 0.5rem;
}

.hero-tagline {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--gray-600);
}

.decoration-bubble {
  position: absolute;
  border-radius: 50%;
  background: var(--gradient-primary);
  opacity: 0.1;
  z-index: 1;
}

.bubble-1 {
  width: 200px;
  height: 200px;
  top: -50px;
  right: -50px;
}

.bubble-2 {
  width: 150px;
  height: 150px;
  bottom: -30px;
  left: -30px;
}

/* ====================================
   SECTION COMMON STYLES
   ==================================== */
.chatllm-section,
.deepagent-section,
.features-comparison-section,
.blog-preview-section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: 1rem;
}

.badge-blue {
  background: var(--blue-50);
  color: var(--primary-blue);
}

.badge-purple {
  background: var(--purple-50);
  color: var(--primary-purple);
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.section-description {
  font-size: var(--text-lg);
  color: var(--gray-600);
  line-height: 1.6;
}

.section-cta {
  margin-top: 2rem;
}

/* ====================================
   FEATURES GRID
   ==================================== */
.features-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 4rem;
}

.feature-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 1rem;
  padding: 2rem;
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.bg-blue-100 {
  background: var(--blue-100);
}

.text-blue-600 {
  color: var(--blue-600);
  stroke: var(--blue-600);
}

.bg-purple-100 {
  background: var(--purple-100);
}

.text-purple-600 {
  color: var(--purple-600);
  stroke: var(--purple-600);
}

.feature-title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--gray-900);
}

.feature-description {
  font-size: var(--text-base);
  color: var(--gray-600);
  line-height: 1.6;
}

/* ====================================
   ADVANTAGES SECTION
   ==================================== */
.advantages-section {
  background: var(--gray-50);
  border-radius: 1rem;
  padding: 3rem 2rem;
  margin-bottom: 4rem;
}

.advantages-header {
  text-align: center;
  margin-bottom: 3rem;
}

.advantages-title {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.advantages-description {
  font-size: var(--text-lg);
  color: var(--gray-600);
}

.advantages-grid {
  display: grid;
  gap: 2rem;
}

.advantage-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.advantage-icon {
  width: 3rem;
  height: 3rem;
  background: white;
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.advantage-icon svg {
  width: 1.5rem;
  height: 1.5rem;
  stroke: var(--primary-blue);
}

.advantage-title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.advantage-description {
  font-size: var(--text-base);
  color: var(--gray-600);
  line-height: 1.6;
}

/* ====================================
   PRICING CTA
   ==================================== */
.pricing-cta {
  text-align: center;
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: 1rem;
  padding: 3rem 2rem;
}

.pricing-amount {
  font-size: var(--text-5xl);
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.pricing-description {
  font-size: var(--text-lg);
  color: var(--gray-600);
  margin-bottom: 2rem;
}

/* ====================================
   DEEP AGENT SPECIFIC
   ==================================== */
.deepagent-section {
  background: var(--gray-50);
}

.usecases-section {
  margin-top: 4rem;
}

.usecases-section h3 {
  font-size: var(--text-2xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: 2rem;
}

.usecases-grid {
  display: grid;
  gap: 1rem;
}

.usecase-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: white;
  border-radius: 0.5rem;
}

.checkmark {
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
  stroke: var(--primary-purple);
  fill: none;
  stroke-width: 2;
}

.final-cta {
  text-align: center;
  margin-top: 4rem;
  padding: 3rem 2rem;
  background: var(--gradient-hero-bg);
  border-radius: 1rem;
}

.final-cta h3 {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: 1rem;
}

.final-cta p {
  font-size: var(--text-lg);
  color: var(--gray-600);
  margin-bottom: 2rem;
}

/* ====================================
   FEATURES COMPARISON
   ==================================== */
.comparison-grid {
  display: grid;
  gap: 2rem;
}

.comparison-card {
  text-align: center;
  padding: 2rem;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 1rem;
}

.comparison-icon {
  width: 3rem;
  height: 3rem;
  margin: 0 auto 1.5rem;
  background: var(--blue-50);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.comparison-icon svg {
  width: 1.5rem;
  height: 1.5rem;
  stroke: var(--primary-blue);
}

.comparison-card h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.comparison-card p {
  color: var(--gray-600);
}

/* ====================================
   BLOG PREVIEW SECTION
   ==================================== */
.blog-preview-section {
  background: var(--gray-50);
}

.blog-preview-section .section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 3rem;
  text-align: left;
}

.see-all-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-blue);
  font-weight: 600;
}

.see-all-link:hover {
  text-decoration: underline;
}

.blog-grid {
  display: grid;
  gap: 2rem;
}

.blog-card {
  background: white;
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid var(--gray-200);
}

.blog-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
}

.blog-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-content {
  padding: 1.5rem;
}

.blog-badge {
  display: inline-block;
  background: var(--gradient-primary);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 0.25rem;
  font-size: var(--text-xs);
  font-weight: 600;
  margin-bottom: 1rem;
}

.blog-title {
  margin-bottom: 0.75rem;
}

.blog-title a {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--gray-900);
}

.blog-title a:hover {
  color: var(--primary-blue);
}

.blog-excerpt {
  font-size: var(--text-base);
  color: var(--gray-600);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.blog-meta {
  display: flex;
  gap: 1rem;
  font-size: var(--text-sm);
  color: var(--gray-500);
  margin-bottom: 1rem;
}

.blog-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-blue);
  font-weight: 600;
}

.blog-link:hover {
  text-decoration: underline;
}

/* ====================================
   FOOTER
   ==================================== */
.footer {
  background: var(--gray-900);
  color: var(--gray-200);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-logo img {
  width: 40px;
  height: 40px;
}

.footer-description {
  color: var(--gray-400);
  line-height: 1.6;
}

.footer-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: white;
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--gray-400);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--gray-700);
  text-align: center;
}

.footer-copyright {
  color: var(--gray-400);
  font-size: var(--text-sm);
}

.footer-copyright a {
  color: var(--primary-blue);
}

.footer-copyright a:hover {
  text-decoration: underline;
}

/* ====================================
   BLOG PAGE
   ==================================== */
.blog-page {
  padding: 8rem 0 6rem;
}

.blog-page-header {
  text-align: center;
  margin-bottom: 4rem;
}

.blog-page-title {
  font-size: var(--text-5xl);
  font-weight: 800;
  margin-bottom: 1rem;
}

.blog-page-description {
  font-size: var(--text-xl);
  color: var(--gray-600);
}

/* ====================================
   BLOG ARTICLE PAGE
   ==================================== */
.article-hero {
  padding: 8rem 0 3rem;
  background: var(--gradient-hero-bg);
}

.article-header {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--gray-600);
  font-size: var(--text-sm);
}

.article-title {
  font-size: var(--text-5xl);
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.article-excerpt {
  font-size: var(--text-xl);
  color: var(--gray-600);
  line-height: 1.6;
}

.article-featured-image {
  max-width: 1000px;
  margin: 3rem auto;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.article-featured-image img {
  width: 100%;
  height: auto;
}

.article-content-wrapper {
  display: grid;
  gap: 3rem;
  padding: 3rem 0;
  max-width: 1200px;
  margin: 0 auto;
}

.article-content {
  max-width: 800px;
}

.article-content h2 {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--gray-900);
}

.article-content h3 {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--gray-900);
}

.article-content p {
  font-size: var(--text-lg);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  color: var(--gray-700);
}

.article-content ul,
.article-content ol {
  margin: 1.5rem 0;
  padding-left: 1.5rem;
}

.article-content li {
  font-size: var(--text-lg);
  line-height: 1.7;
  margin-bottom: 0.75rem;
  color: var(--gray-700);
  list-style: disc;
}

.article-content ol li {
  list-style: decimal;
}

.article-content strong {
  font-weight: 700;
  color: var(--gray-900);
}

.article-content a {
  color: var(--primary-blue);
  text-decoration: underline;
}

.article-content a:hover {
  color: var(--blue-700);
}

.article-content blockquote {
  border-left: 4px solid var(--primary-blue);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--gray-600);
}

.article-cta {
  background: var(--gradient-hero-bg);
  border: 2px solid var(--primary-blue);
  border-radius: 1rem;
  padding: 2rem;
  margin: 3rem 0;
  text-align: center;
}

.article-cta h3 {
  font-size: var(--text-2xl);
  font-weight: 700;
  margin-bottom: 1rem;
}

.article-cta p {
  color: var(--gray-600);
  margin-bottom: 1.5rem;
}

.article-sidebar {
  display: none;
}

.sidebar-card {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 1rem;
  padding: 1.5rem;
  margin-bottom: 2rem;
  position: sticky;
  top: 100px;
}

.sidebar-title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: 1rem;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toc-link {
  color: var(--gray-600);
  padding: 0.5rem 0;
  border-left: 2px solid var(--gray-200);
  padding-left: 1rem;
}

.toc-link:hover {
  color: var(--primary-blue);
  border-left-color: var(--primary-blue);
}

.related-articles {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.related-article-link {
  display: block;
  padding: 1rem;
  background: var(--gray-50);
  border-radius: 0.5rem;
}

.related-article-link:hover {
  background: var(--blue-50);
}

.related-article-title {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 0.25rem;
}

.related-article-date {
  font-size: var(--text-sm);
  color: var(--gray-500);
}

/* ====================================
   HELP CENTER
   ==================================== */
.help-hero {
  padding: 8rem 0 4rem;
  text-align: center;
  background: var(--gradient-hero-bg);
}

.help-hero h1 {
  font-size: var(--text-5xl);
  font-weight: 800;
  margin-bottom: 1rem;
}

.help-hero p {
  font-size: var(--text-xl);
  color: var(--gray-600);
}

.help-sections {
  padding: 4rem 0;
}

.help-grid {
  display: grid;
  gap: 1.5rem;
}

.help-card {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem;
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 1rem;
  cursor: pointer;
}

.help-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.help-icon svg {
  width: 1.5rem;
  height: 1.5rem;
  stroke: var(--primary-blue);
}

.help-card h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.help-card p {
  font-size: var(--text-sm);
  color: var(--gray-600);
}

.help-card .chevron {
  width: 1.5rem;
  height: 1.5rem;
  stroke: var(--gray-400);
  margin-left: auto;
  flex-shrink: 0;
}

.help-cta {
  padding: 4rem 0;
  text-align: center;
}

.help-cta h2 {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: 2rem;
}

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

/* ====================================
   RESPONSIVE DESIGN
   ==================================== */
@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-title {
    font-size: var(--text-5xl);
  }

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

  .advantages-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .comparison-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

  .article-content-wrapper {
    grid-template-columns: 1fr 300px;
  }

  .article-sidebar {
    display: block;
  }
}

@media (min-width: 1024px) {
  .nav-desktop {
    display: block;
  }

  .burger-btn {
    display: none;
  }

  .hero-title {
    font-size: var(--text-6xl);
  }

  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

@media (min-width: 1280px) {
  .container {
    max-width: 1280px;
  }
}