/* ==========================================================================
   CyberGuard Landing Page & Knowledge Base Styles
   Theme: Bold Gradients, Asymmetrical Layout, Parallax Glassmorphism
   Typography: STKaiti / KaiTi / 楷体
   ========================================================================== */

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

:root {
  --font-primary: 'STKaiti', 'KaiTi', '楷体', 'Outfit', serif, sans-serif;
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Bold Gradient Palette */
  --bg-dark: #080b14;
  --bg-card: rgba(18, 24, 43, 0.7);
  --bg-card-hover: rgba(28, 38, 68, 0.85);
  --glass-border: rgba(255, 255, 255, 0.12);
  --glass-border-glow: rgba(99, 102, 241, 0.5);
  
  --primary-blue: #2563eb;
  --primary-blue-glow: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;
  --accent-cyan: #06b6d4;
  --accent-emerald: #10b981;

  --grad-hero: linear-gradient(135deg, #1e1b4b 0%, #311b92 40%, #006064 100%);
  --grad-vibrant: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  --grad-cyan-blue: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --grad-card-header: linear-gradient(135deg, rgba(37, 99, 235, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-bright: #ffffff;
  
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 0 20px rgba(99, 102, 241, 0.2);
  --shadow-neon: 0 0 30px rgba(59, 130, 246, 0.4);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;

  --transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: var(--font-primary);
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.8;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Background Canvas & Decorative Elements */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  pointer-events: none;
}

.ambient-light {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  pointer-events: none;
  z-index: -1;
  opacity: 0.5;
  animation: pulseLight 12s infinite alternate ease-in-out;
}

.ambient-light-1 {
  width: 500px;
  height: 500px;
  background: var(--accent-purple);
  top: -100px;
  right: -100px;
}

.ambient-light-2 {
  width: 600px;
  height: 600px;
  background: var(--primary-blue);
  bottom: 10%;
  left: -200px;
}

.ambient-light-3 {
  width: 400px;
  height: 400px;
  background: var(--accent-pink);
  top: 40%;
  right: -150px;
}

@keyframes pulseLight {
  0% { transform: scale(1) translate(0, 0); opacity: 0.4; }
  50% { transform: scale(1.15) translate(30px, -20px); opacity: 0.65; }
  100% { transform: scale(0.9) translate(-20px, 30px); opacity: 0.4; }
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  color: var(--text-bright);
  font-weight: 700;
  line-height: 1.3;
}

.gradient-text {
  background: var(--grad-vibrant);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gradient-text-blue {
  background: var(--grad-cyan-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

a {
  color: var(--primary-blue-glow);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--accent-pink);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(8, 11, 20, 0.75);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  padding: 1rem 0;
  transition: var(--transition);
}

.navbar-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-bright);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--grad-vibrant);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.6);
  color: #fff;
  font-size: 1.2rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--text-main);
  font-size: 1.1rem;
  font-weight: 500;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--grad-vibrant);
  transition: var(--transition);
  border-radius: 2px;
}

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

.nav-cta-btn {
  background: var(--grad-vibrant);
  color: var(--text-bright);
  padding: 0.65rem 1.6rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 1.05rem;
  box-shadow: 0 4px 15px rgba(168, 85, 247, 0.4);
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.nav-cta-btn:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 6px 25px rgba(236, 72, 153, 0.6);
  color: #fff;
}

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

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

.section-title-wrap {
  margin-bottom: 3.5rem;
  text-align: center;
  position: relative;
}

.section-tag {
  display: inline-block;
  padding: 0.35rem 1.2rem;
  border-radius: var(--radius-pill);
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--accent-cyan);
  font-size: 0.95rem;
  margin-bottom: 0.8rem;
  letter-spacing: 1px;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.15rem;
  max-width: 680px;
  margin: 0 auto;
}

/* Hero Section (Asymmetrical Bold Layout) */
.hero-section {
  padding-top: 10rem;
  padding-bottom: 6rem;
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.4rem 1.2rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  box-shadow: 0 0 10px var(--accent-emerald);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1.1); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-heading {
  font-size: 3.6rem;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -1px;
}

.hero-desc {
  font-size: 1.25rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.btn-primary {
  background: var(--grad-vibrant);
  color: #fff;
  padding: 1rem 2.5rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1.2rem;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 12px 35px rgba(236, 72, 153, 0.6);
  color: #fff;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--text-bright);
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
  transform: translateY(-2px);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--glass-border);
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-bright);
  font-family: var(--font-sans);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Asymmetric Hero Card Visual */
.hero-visual-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  position: relative;
  transform: perspective(1000px) rotateY(-5deg) rotateX(3deg);
  transition: var(--transition);
}

.hero-visual-card:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg) scale(1.02);
  border-color: var(--glass-border-glow);
}

.card-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 1.5rem;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.ping-monitor {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.node-ping-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.8rem 1.2rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.05rem;
}

.node-flag {
  font-size: 1.3rem;
}

.ping-tag {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.12);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

/* Feature Cards Grid (Asymmetry) */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 2.2rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--grad-vibrant);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  background: var(--bg-card-hover);
  border-color: var(--glass-border-glow);
  box-shadow: var(--shadow-lg);
}

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

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--accent-cyan);
  margin-bottom: 1.5rem;
}

.feature-title {
  font-size: 1.5rem;
  margin-bottom: 0.8rem;
}

.feature-text {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

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

.pricing-card {
  background: #ffffff;
  color: #1f2937;
  border-radius: 20px;
  padding: 2.5rem 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: var(--transition);
  border: 2px solid transparent;
}

.pricing-card.highlighted {
  border-color: #2563eb;
  box-shadow: 0 15px 40px rgba(37, 99, 235, 0.25);
  transform: scale(1.04);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  right: 30px;
  background: #2563eb;
  color: #ffffff;
  padding: 0.3rem 1.2rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.pricing-title {
  font-family: var(--font-sans);
  font-size: 1.6rem;
  font-weight: 800;
  color: #111827;
  margin-bottom: 1.2rem;
}

.pricing-price {
  font-family: var(--font-sans);
  font-size: 2.8rem;
  font-weight: 800;
  color: #2563eb;
  margin-bottom: 1.8rem;
  display: flex;
  align-items: baseline;
}

.pricing-period {
  font-size: 1.1rem;
  color: #9ca3af;
  font-weight: 400;
  margin-left: 0.3rem;
}

.pricing-features {
  list-style: none;
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.1rem;
  color: #374151;
  font-weight: 500;
}

.pricing-feature-item.check-blue {
  color: #059669;
}

.pricing-feature-item.zap-orange {
  color: #ea580c;
}

.pricing-btn {
  width: 100%;
  padding: 1rem 0;
  border-radius: 12px;
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  border: none;
  transition: var(--transition);
  display: block;
}

.pricing-btn-default {
  background: #f3f4f6;
  color: #111827;
}

.pricing-btn-default:hover {
  background: #e5e7eb;
}

.pricing-btn-primary {
  background: #2563eb;
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

.pricing-btn-primary:hover {
  background: #1d4ed8;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.6);
  color: #fff;
}

.pricing-btn-soft {
  background: #93c5fd;
  color: #1d4ed8;
}

.pricing-btn-soft:hover {
  background: #60a5fa;
  color: #ffffff;
}

/* Keywords Bar */
.keywords-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 3rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
}

.kw-chip {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  transition: var(--transition);
  cursor: pointer;
}

.kw-chip:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* Knowledge Base Grid (Articles) */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-6px);
  border-color: var(--glass-border-glow);
  box-shadow: var(--shadow-lg);
  background: var(--bg-card-hover);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.article-title {
  font-size: 1.35rem;
  line-height: 1.4;
  margin-bottom: 1rem;
}

.article-title a {
  color: var(--text-bright);
}

.article-title a:hover {
  color: var(--accent-cyan);
}

.article-excerpt {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--glass-border);
  font-size: 0.9rem;
}

.read-more-link {
  font-weight: 600;
  color: var(--accent-cyan);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.read-more-link:hover {
  gap: 0.6rem;
  color: var(--accent-pink);
}

/* FAQ Accordion Section */
.faq-container {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

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

.faq-question {
  padding: 1.4rem 1.8rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-bright);
}

.faq-toggle-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition);
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
  background: var(--primary-blue);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 1.8rem;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 1.8rem 1.5rem 1.8rem;
}

/* Article Page Dedicated Layout */
.article-page {
  padding-top: 8rem;
  padding-bottom: 6rem;
}

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

.article-main-title {
  font-size: 2.8rem;
  line-height: 1.25;
  margin-bottom: 1.5rem;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 1rem;
  background: rgba(255, 255, 255, 0.04);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--glass-border);
  display: inline-flex;
}

.article-content-body {
  max-width: 900px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 3.5rem;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
}

.article-content-body h2 {
  font-size: 1.8rem;
  margin: 2.5rem 0 1.2rem 0;
  color: var(--accent-cyan);
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 0.6rem;
}

.article-content-body h3 {
  font-size: 1.4rem;
  margin: 1.8rem 0 0.8rem 0;
  color: var(--text-bright);
}

.article-content-body p {
  margin-bottom: 1.5rem;
  font-size: 1.15rem;
  color: var(--text-main);
  line-height: 1.9;
}

.article-content-body ul, .article-content-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.8rem;
}

.article-content-body li {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

.article-cta-box {
  margin: 3rem 0;
  background: var(--grad-card-header);
  border: 1px solid var(--glass-border-glow);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.article-cta-title {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.article-cta-desc {
  margin-bottom: 1.8rem;
  color: var(--text-muted);
}

.internal-nav-box {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
}

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

.internal-link-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  padding: 1.2rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.internal-link-card:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--accent-cyan);
}

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

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

.footer-brand p {
  color: var(--text-muted);
  margin-top: 1rem;
  font-size: 1rem;
  max-width: 320px;
}

.footer-title {
  font-size: 1.2rem;
  margin-bottom: 1.2rem;
  color: var(--text-bright);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.98rem;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-stats {
    justify-content: center;
  }
  .hero-visual-card {
    transform: none;
    margin-top: 2rem;
  }
  .features-grid, .pricing-grid, .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-card.highlighted {
    transform: none;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }
  .hero-heading {
    font-size: 2.5rem;
  }
  .features-grid, .pricing-grid, .articles-grid, .internal-links-grid {
    grid-template-columns: 1fr;
  }
  .article-content-body {
    padding: 1.8rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}