/* Import premium typography */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* Color Variables and Design Tokens */
:root {
  --primary-hsl: 260, 85%, 62%;
  --secondary-hsl: 215, 100%, 55%;
  --accent-hsl: 320, 90%, 60%;
  
  --primary: hsl(var(--primary-hsl));
  --primary-glow: hsla(var(--primary-hsl), 0.15);
  --secondary: hsl(var(--secondary-hsl));
  --secondary-glow: hsla(var(--secondary-hsl), 0.15);
  --accent: hsl(var(--accent-hsl));
  
  --background: #06040d;
  --background-alt: #0a0816;
  --card-bg: rgba(15, 12, 30, 0.65);
  --card-hover: rgba(25, 20, 50, 0.8);
  --border: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(124, 58, 237, 0.5);
  
  --text: #f9f9fb;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Outfit', sans-serif;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Global Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--background);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Canvas Background styling */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* Glow Background Overlays */
.glow-orb {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.12) 0%, rgba(0, 0, 0, 0) 70%);
  z-index: -1;
  filter: blur(80px);
  pointer-events: none;
}
.orb-1 { top: -10%; right: -10%; }
.orb-2 { top: 50%; left: -20%; background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, rgba(0, 0, 0, 0) 70%); }
.orb-3 { bottom: -10%; right: 10%; }

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

p {
  color: var(--text-muted);
}

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

/* Utility Components */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 8rem 0;
  position: relative;
}

.section-title {
  font-size: 2.75rem;
  text-align: center;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #ffffff 30%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  text-align: center;
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto 4rem auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-family: var(--font-display);
  font-weight: 600;
  border-radius: 12px;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
  gap: 0.5rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #9061f9 100%);
  color: #fff;
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(124, 58, 237, 0.45);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text);
  backdrop-filter: blur(10px);
}

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

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(6, 4, 13, 0.7);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

header.scrolled {
  padding: 0.5rem 0;
  background: rgba(6, 4, 13, 0.85);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

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

header.scrolled .nav-container {
  height: 70px;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  height: 42px;
  width: auto;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 2.5rem;
}

.nav-link {
  font-family: var(--font-display);
  font-weight: 500;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.nav-link:hover, .nav-link.active {
  color: var(--text);
  text-shadow: 0 0 10px rgba(167, 139, 250, 0.4);
}

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

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

/* Hero Section */
.hero {
  padding: 12rem 0 6rem 0;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(124, 58, 237, 0.1);
  border: 1px solid rgba(124, 58, 237, 0.2);
  border-radius: 99px;
  color: #c084fc;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
  animation: pulse 2s infinite;
}

.hero-badge strong {
  color: #fff;
  font-weight: 700;
  margin: 0 0.2rem;
}

.hero-title {
  font-size: 4rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff 40%, #a78bfa 70%, #60a5fa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  border-top: 1px solid var(--border);
  padding-top: 2rem;
}

.stat-item h4 {
  font-size: 2rem;
  color: var(--text);
}

.stat-item p {
  font-size: 0.875rem;
}

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

.visual-sphere {
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  filter: blur(40px);
  opacity: 0.3;
  position: absolute;
  animation: float 6s ease-in-out infinite;
}

.visual-card {
  position: relative;
  z-index: 2;
  background: var(--card-bg);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px);
  border-radius: 24px;
  padding: 2rem;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
  animation: float 6s ease-in-out infinite alternate;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.card-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  background: linear-gradient(135deg, #c084fc, #6366f1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.card-status {
  padding: 0.25rem 0.75rem;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: 99px;
  color: #4ade80;
  font-size: 0.75rem;
  font-weight: 600;
}

.card-speed-meter {
  height: 8px;
  background: rgba(255,255,255,0.05);
  border-radius: 4px;
  overflow: hidden;
  margin: 1rem 0;
}

.speed-bar {
  height: 100%;
  width: 94%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 4px;
  animation: loadingWidth 2.5s ease-out forwards;
}

.card-details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.detail-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  padding: 0.75rem;
  border-radius: 12px;
}

.detail-box span {
  display: block;
  font-size: 0.75rem;
  color: var(--text-dim);
}

.detail-box strong {
  font-size: 0.95rem;
  color: var(--text);
}

/* Features Section */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.5rem;
  transition: var(--transition);
  backdrop-filter: blur(12px);
}

.feature-card:hover {
  transform: translateY(-5px);
  background: var(--card-hover);
  border-color: rgba(124, 58, 237, 0.3);
  box-shadow: 0 15px 30px rgba(124, 58, 237, 0.08);
}

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.15) 0%, rgba(37, 99, 235, 0.15) 100%);
  border: 1px solid rgba(124, 58, 237, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #c084fc;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.feature-card p {
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Pricing Section */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  align-items: stretch; /* All cards same height */
}

.pricing-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 3rem 2.25rem;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-slow);
  backdrop-filter: blur(16px);
}

.pricing-card.featured {
  background: linear-gradient(180deg, rgba(15, 12, 35, 0.85) 0%, rgba(8, 6, 20, 0.85) 100%);
  border-color: var(--primary);
  box-shadow: 0 15px 40px rgba(124, 58, 237, 0.15);
  transform: translateY(-8px);
}

.pricing-card.featured::before {
  content: '推荐';
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.35rem 1rem;
  border-radius: 99px;
}

.pricing-card:hover {
  transform: translateY(-12px);
  border-color: rgba(124, 58, 237, 0.4);
  background: var(--card-hover);
}

.pricing-card.featured:hover {
  transform: translateY(-12px);
  box-shadow: 0 20px 45px rgba(124, 58, 237, 0.25);
}

.plan-name {
  font-size: 1.25rem;
  color: var(--text);
  margin-bottom: 0.5rem;
  font-family: var(--font-display);
  font-weight: 600;
}

.plan-desc {
  font-size: 0.875rem;
  margin-bottom: 2rem;
}

.plan-price-wrapper {
  margin-bottom: 2rem;
}

.plan-price {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 3rem;
  color: var(--text);
  line-height: 1;
}

.plan-price span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
}

.plan-features {
  list-style: none;
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

.plan-features li svg {
  color: #c084fc;
  flex-shrink: 0;
}

.pricing-card.featured .plan-features li svg {
  color: #38bdf8;
}

.pricing-card .btn {
  width: 100%;
}

/* Articles Blog section */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.blog-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(12px);
}

.blog-card:hover {
  transform: translateY(-5px);
  border-color: rgba(124, 58, 237, 0.3);
  background: var(--card-hover);
}

.blog-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-date {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
  display: block;
}

.blog-title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  line-height: 1.4;
  color: var(--text);
}

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

.blog-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.6;
  flex-grow: 1;
}

.blog-more {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  color: #c084fc;
}

.blog-more:hover {
  gap: 0.75rem;
}

/* Testimonials / Reviews */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.testimonial-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.5rem;
  position: relative;
  backdrop-filter: blur(12px);
}

.testimonial-card::after {
  content: '”';
  position: absolute;
  bottom: 1rem;
  right: 2rem;
  font-size: 8rem;
  font-family: var(--font-display);
  line-height: 1;
  color: rgba(255,255,255,0.02);
  pointer-events: none;
}

.review-stars {
  display: flex;
  gap: 0.25rem;
  color: #f59e0b;
  margin-bottom: 1.25rem;
}

.review-text {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 2;
}

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

.user-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-family: var(--font-display);
}

.user-info h4 {
  font-size: 0.95rem;
  color: var(--text);
}

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

/* FAQ Section */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  margin-bottom: 1.25rem;
  overflow: hidden;
  transition: var(--transition);
  backdrop-filter: blur(12px);
}

.faq-header {
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.faq-question {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}

.faq-icon {
  font-size: 1.25rem;
  color: var(--text-muted);
  transition: transform 0.3s ease;
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
  padding: 0 1.5rem;
  color: var(--text-muted);
  font-size: 0.975rem;
}

.faq-item.active {
  border-color: var(--border-focus);
  background: var(--card-hover);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: #c084fc;
}

.faq-item.active .faq-content {
  max-height: 1000px;
  padding: 0 1.5rem 1.5rem 1.5rem;
  transition: max-height 0.5s cubic-bezier(1, 0, 1, 0), padding 0.3s ease;
}

/* SEO Subpage Article Layout */
.article-page {
  padding-top: 10rem;
  padding-bottom: 6rem;
}

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  margin-bottom: 2rem;
}

.breadcrumbs a {
  color: var(--text-dim);
}

.breadcrumbs a:hover {
  color: var(--primary);
}

.breadcrumbs span {
  color: var(--text-dim);
}

.article-layout {
  display: grid;
  grid-template-columns: 2.2fr 0.8fr;
  gap: 3.5rem;
  align-items: start;
}

.article-content {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 3.5rem;
  backdrop-filter: blur(16px);
}

.article-header {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 2rem;
}

.article-meta {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}

.article-title {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff 40%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.article-body {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.article-body h2 {
  font-size: 1.75rem;
  color: var(--text);
  margin: 2.5rem 0 1.25rem 0;
}

.article-body h3 {
  font-size: 1.35rem;
  color: var(--text);
  margin: 2rem 0 1rem 0;
}

.article-body p {
  margin-bottom: 1.5rem;
}

.article-body a {
  color: #c084fc;
  border-bottom: 1px dashed #c084fc;
  font-weight: 500;
}

.article-body a:hover {
  color: #fff;
  border-bottom-style: solid;
}

.article-body ul, .article-body ol {
  margin-left: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-muted);
}

.article-body li {
  margin-bottom: 0.5rem;
}

.article-body blockquote {
  border-left: 4px solid var(--primary);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  background: rgba(124, 58, 237, 0.03);
  padding-top: 1rem;
  padding-bottom: 1rem;
  border-radius: 0 12px 12px 0;
}

.article-cta {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.1) 0%, rgba(37, 99, 235, 0.1) 100%);
  border: 1px solid rgba(124, 58, 237, 0.2);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  margin-top: 3rem;
}

.article-cta h3 {
  margin-bottom: 1rem;
}

/* Sidebar styling for articles */
.article-sidebar {
  position: sticky;
  top: 120px;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.sidebar-widget {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  backdrop-filter: blur(12px);
}

.widget-title {
  font-size: 1.15rem;
  margin-bottom: 1.25rem;
  border-left: 3px solid var(--primary);
  padding-left: 0.75rem;
  color: var(--text);
}

.related-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.related-list li a {
  font-size: 0.95rem;
  color: var(--text-muted);
  display: block;
  line-height: 1.4;
}

.related-list li a:hover {
  color: #c084fc;
  transform: translateX(3px);
}

.sidebar-cta {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #fff;
  text-align: center;
  padding: 2.5rem 2rem;
  border-radius: 20px;
}

.sidebar-cta h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.sidebar-cta p {
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.sidebar-cta .btn {
  background: #fff;
  color: #000;
  width: 100%;
}

/* Footer styling */
footer {
  background: #04030a;
  border-top: 1px solid var(--border);
  padding: 5rem 0 2rem 0;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand p {
  margin-top: 1rem;
  font-size: 0.9rem;
  max-width: 250px;
}

.footer-col h4 {
  color: var(--text);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  font-size: 0.9rem;
}

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

.footer-subscribe p {
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.subscribe-form {
  display: flex;
  gap: 0.5rem;
}

.subscribe-input {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: #fff;
  font-family: var(--font-sans);
  flex-grow: 1;
  font-size: 0.9rem;
}

.subscribe-input:focus {
  outline: none;
  border-color: var(--primary);
}

.subscribe-form .btn {
  padding: 0 1.25rem;
  border-radius: 8px;
}

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

.footer-legal {
  display: flex;
  gap: 1.5rem;
}

/* Animations */
@keyframes float {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-10px) rotate(1deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(124, 58, 237, 0); }
  100% { box-shadow: 0 0 0 0 rgba(124, 58, 237, 0); }
}

@keyframes loadingWidth {
  from { width: 0%; }
  to { width: 94%; }
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  .hero-actions, .hero-stats {
    justify-content: center;
  }
  .hero-visual {
    order: -1;
  }
  .features-grid, .pricing-grid, .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .article-layout {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .article-sidebar {
    position: relative;
    top: 0;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2.25rem;
  }
  .hero-title {
    font-size: 2.75rem;
  }
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: rgba(6, 4, 13, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 3rem 0;
    gap: 2rem;
    transition: var(--transition-slow);
  }
  .nav-menu.open {
    left: 0;
  }
  .menu-toggle {
    display: flex;
  }
  .features-grid, .pricing-grid, .blog-grid, .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .pricing-card.featured {
    transform: none !important;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  .article-content {
    padding: 2rem;
  }
  .article-title {
    font-size: 2rem;
  }
}