/* CSS Design System for 1yunti.you */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  /* Color Palette */
  --bg-main: #060913;
  --bg-gradient: linear-gradient(135deg, #060913 0%, #0d1527 100%);
  --bg-card: rgba(13, 21, 39, 0.6);
  --bg-card-hover: rgba(20, 32, 60, 0.85);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(59, 130, 246, 0.4);
  
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.5);
  --accent: #8b5cf6;
  --accent-glow: rgba(139, 92, 246, 0.5);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --success: #10b981;
  --warning: #f59e0b;
  
  --font-title: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius: 16px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-main);
  background-image: var(--bg-gradient);
  color: var(--text-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 6rem 0;
  position: relative;
}

.section-title {
  font-family: var(--font-title);
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #fff 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-desc {
  color: var(--text-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3.5rem auto;
  font-size: 1.1rem;
}

/* Glowing Background Overlay */
.glow-blur {
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  font-family: var(--font-title);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
  color: #fff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(59, 130, 246, 0.7);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-outline-primary {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}

.btn-outline-primary:hover {
  background: rgba(59, 130, 246, 0.1);
  box-shadow: 0 0 15px var(--primary-glow);
  transform: translateY(-2px);
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(6, 9, 19, 0.7);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

header.scrolled {
  background: rgba(6, 9, 19, 0.9);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
}

nav a:hover, nav a.active {
  color: var(--text-primary);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: var(--transition);
}

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

.nav-cta {
  margin-left: 1rem;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--text-primary);
  transition: var(--transition);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  position: relative;
  overflow: hidden;
}

#bg-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content h1 {
  font-family: var(--font-title);
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #fff 30%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content h1 span {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 600px;
}

.hero-btns {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}

.hero-features {
  display: flex;
  gap: 2rem;
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.hero-feature-item svg {
  color: var(--primary);
  width: 20px;
  height: 20px;
}

.hero-graphic {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-sphere {
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, rgba(139, 92, 246, 0.05) 70%);
  border: 1px dashed rgba(255, 255, 255, 0.15);
  position: relative;
  animation: rotateSphere 20s linear infinite;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-sphere-inner {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.4) 0%, transparent 80%);
  filter: blur(20px);
  position: absolute;
}

.hero-orbit-node {
  position: absolute;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  animation: counterRotate 20s linear infinite;
}

.hero-orbit-node svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
}

.node-1 { top: -20px; left: calc(50% - 20px); }
.node-2 { bottom: -20px; left: calc(50% - 20px); }
.node-3 { left: -20px; top: calc(50% - 20px); }
.node-4 { right: -20px; top: calc(50% - 20px); }

@keyframes rotateSphere {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes counterRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(-360deg); }
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  position: relative;
  z-index: 2;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2.5rem 2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(8px);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-8px);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  background: var(--primary);
  color: #fff;
  transform: scale(1.1);
}

.feature-card h3 {
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Pricing Section - Exact Replication of UI Request */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch;
  position: relative;
  z-index: 2;
}

.pricing-card {
  background: #0d1527; /* Dark background similar to image */
  border: 1.5px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 3rem 2.2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.pricing-card.popular {
  border: 2px solid rgba(59, 130, 246, 0.8);
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.25);
  background: #0f1a36;
  transform: scale(1.02);
}

.pricing-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: #2563eb;
  color: #fff;
  padding: 4px 18px;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 50px;
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

.pricing-level {
  background: rgba(255, 255, 255, 0.08);
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  align-self: flex-start;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.pricing-card.popular .pricing-level {
  color: var(--text-primary);
  background: rgba(59, 130, 246, 0.15);
}

.pricing-card h3 {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.pricing-price {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 2rem;
  display: flex;
  align-items: baseline;
  color: var(--text-primary);
}

.pricing-price span.currency {
  font-size: 1.6rem;
  margin-right: 4px;
}

.pricing-price span.period {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 400;
  margin-left: 4px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 2.5rem;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0.85rem;
}

.pricing-features li.check svg {
  color: var(--primary);
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

.pricing-features li.cross svg {
  color: var(--text-muted);
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

.pricing-btn {
  width: 100%;
  padding: 0.9rem;
  font-size: 1rem;
  border-radius: 8px;
}

.pricing-card:not(.popular) .pricing-btn {
  background: transparent;
  border: 1px solid rgba(59, 130, 246, 0.4);
  color: #fff;
}

.pricing-card:not(.popular) .pricing-btn:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* Brand Reviews Section */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  position: relative;
  z-index: 2;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2.5rem 2rem;
  transition: var(--transition);
  position: relative;
}

.review-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
}

.review-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.review-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #fff;
  font-size: 1.2rem;
}

.author-info h4 {
  font-size: 1.05rem;
  font-weight: 600;
}

.author-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.review-stars {
  color: var(--warning);
  display: flex;
  gap: 3px;
  margin-bottom: 1rem;
}

.review-card p.quote {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  font-style: italic;
}

.brand-badge {
  background: rgba(139, 92, 246, 0.15);
  color: #c084fc;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
  display: inline-block;
  font-weight: 600;
}

/* Tutorials (Tabs and Step-by-Step) */
.tutorial-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  position: relative;
  z-index: 2;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.07);
}

.tab-btn.active {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--primary);
  color: var(--text-primary);
  box-shadow: 0 0 15px rgba(59, 130, 246, 0.15);
}

.tutorial-content {
  position: relative;
  z-index: 2;
}

.tab-pane {
  display: none;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.tab-pane.active {
  display: grid;
  animation: fadeIn 0.4s ease;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2rem;
  position: relative;
}

.step-num {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 3rem;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.03);
  line-height: 1;
}

.step-card h4 {
  font-family: var(--font-title);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.step-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.step-card code {
  background: rgba(0, 0, 0, 0.3);
  color: var(--primary);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
}

/* Troubleshooting & FAQ Accordions */
.accordion-wrapper {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 1rem;
  overflow: hidden;
  transition: var(--transition);
}

.accordion-item:hover {
  border-color: rgba(255, 255, 255, 0.15);
  background: var(--bg-card-hover);
}

.accordion-header {
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.accordion-header svg {
  transition: var(--transition);
  color: var(--primary);
  width: 20px;
  height: 20px;
}

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 1.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.accordion-item.active .accordion-header svg {
  transform: rotate(180deg);
}

.accordion-item.active .accordion-body {
  max-height: 1000px;
  padding: 0 1.5rem 1.25rem 1.5rem;
  transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
}

/* Knowledge Base (SEO Articles Grid) */
.kb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 2rem;
  position: relative;
  z-index: 2;
}

.kb-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.kb-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
}

.kb-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  align-items: center;
}

.kb-tag {
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.kb-card h3 {
  font-family: var(--font-title);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.4;
}

.kb-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kb-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.kb-link:hover {
  color: var(--accent);
}

.kb-link svg {
  transition: var(--transition);
  width: 16px;
  height: 16px;
}

.kb-card:hover .kb-link svg {
  transform: translateX(4px);
}

/* Tag Cloud (60 Tags) */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  max-width: 1000px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.tag-cloud a {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.8rem;
  transition: var(--transition);
}

.tag-cloud a:hover {
  background: rgba(59, 130, 246, 0.12);
  border-color: var(--primary);
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* User Reviews Section (Carousel/Grid) */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  position: relative;
  z-index: 2;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 2.2rem;
  transition: var(--transition);
}

.testimonial-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.25rem;
}

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #3b82f6;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.user-info h5 {
  font-size: 0.95rem;
  font-weight: 600;
}

.user-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Footer */
footer {
  background: #04060c;
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem 0;
  position: relative;
  z-index: 2;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 1rem;
  max-width: 280px;
}

.footer-links h4 {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

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

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

.footer-links ul li a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-links ul li a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.geo-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Article Styling Template */
.article-page {
  padding-top: 120px;
}

.article-header {
  max-width: 900px;
  margin: 0 auto 3rem auto;
  text-align: center;
}

.article-header h1 {
  font-family: var(--font-title);
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #fff 30%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.article-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.article-meta a.back-home {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.article-container {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 4rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.article-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 3rem;
  backdrop-filter: blur(8px);
}

.article-content h2 {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 700;
  margin: 2.5rem 0 1.25rem 0;
  color: var(--text-primary);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 0.5rem;
}

.article-content h2:first-of-type {
  margin-top: 0;
}

.article-content h3 {
  font-family: var(--font-title);
  font-size: 1.35rem;
  font-weight: 600;
  margin: 1.75rem 0 1rem 0;
  color: var(--text-primary);
}

.article-content p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.article-content ul, .article-content ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
  color: var(--text-secondary);
}

.article-content li {
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
}

.article-content strong {
  color: #fff;
}

.article-content code {
  background: rgba(255, 255, 255, 0.05);
  color: #e0f2fe;
  padding: 3px 8px;
  border-radius: 4px;
  font-family: monospace;
  font-size: 0.95rem;
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.95rem;
}

.article-content table th, .article-content table td {
  border: 1px solid var(--border-color);
  padding: 12px;
  text-align: left;
}

.article-content table th {
  background: rgba(59, 130, 246, 0.1);
  color: var(--text-primary);
  font-weight: 600;
}

.article-content table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.02);
}

.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: rgba(59, 130, 246, 0.05);
  padding: 1.5rem;
  margin: 1.5rem 0;
  border-radius: 0 8px 8px 0;
}

.article-content blockquote p {
  margin-bottom: 0;
  font-style: italic;
}

.article-sidebar {
  position: sticky;
  top: 120px;
  align-self: start;
}

.sidebar-widget {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.sidebar-widget h4 {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
  border-left: 3px solid var(--primary);
  padding-left: 0.5rem;
}

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

.sidebar-list li {
  margin-bottom: 0.75rem;
  font-size: 0.9rem;
}

.sidebar-list li a {
  color: var(--text-secondary);
  display: block;
}

.sidebar-list li a:hover {
  color: var(--primary);
}

.sidebar-list li.active a {
  color: var(--primary);
  font-weight: 600;
}

.promo-widget {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
  border: 1px solid rgba(59, 130, 246, 0.3);
  text-align: center;
}

.promo-widget p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin: 0.5rem 0 1.25rem 0;
}

.promo-widget .btn {
  width: 100%;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Media Queries (Responsive Design) */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-card.popular {
    transform: none;
    order: -1; /* Place popular card first */
  }
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }
  .hero-content p {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-btns {
    justify-content: center;
  }
  .hero-features {
    justify-content: center;
  }
  .hero-graphic {
    display: none;
  }
  .article-container {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    display: none;
  }
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }
  header .container {
    height: 70px;
  }
  nav {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: #060913;
    flex-direction: column;
    padding: 3rem 2rem;
    gap: 2rem;
    transition: var(--transition);
    overflow-y: auto;
    z-index: 99;
  }
  nav.active {
    left: 0;
  }
  .menu-toggle {
    display: flex;
  }
  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .section-title {
    font-size: 2rem;
  }
  .hero-content h1 {
    font-size: 2.5rem;
  }
  .hero-btns {
    flex-direction: column;
    gap: 1rem;
  }
  .hero-btns .btn {
    width: 100%;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .article-content {
    padding: 1.5rem;
  }
}