/* ============================================================
   LevScanAI — Marketing Website Design System
   Dark Glassmorphism · Neon Accents · Mobile-First
   ============================================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Background & Surface */
  --bg-primary: #0a0e1a;
  --bg-secondary: #0f1428;
  --bg-tertiary: #141a30;
  --bg-card: rgba(15, 20, 40, 0.7);
  --bg-card-hover: rgba(20, 26, 48, 0.85);
  --bg-glass: rgba(15, 20, 40, 0.55);

  /* Brand Colors */
  --primary: #4f8ef7;
  --primary-dark: #2563eb;
  --primary-light: #60a5fa;
  --secondary: #7c5af7;
  --secondary-dark: #6d28d9;
  --accent-gold: #d4af37;
  --accent-gold-glow: rgba(212, 175, 55, 0.4);
  --accent-cyan: #06b6d4;

  /* Semantic Colors */
  --success: #22d3a0;
  --success-bg: rgba(34, 211, 160, 0.1);
  --warning: #f7c948;
  --warning-bg: rgba(247, 201, 72, 0.1);
  --danger: #f75a5a;
  --danger-bg: rgba(247, 90, 90, 0.1);

  /* Text */
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Borders */
  --border-subtle: rgba(148, 163, 184, 0.1);
  --border-accent: rgba(79, 142, 247, 0.3);
  --border-glow: rgba(79, 142, 247, 0.5);

  /* Gradients */
  --gradient-brand: linear-gradient(135deg, #60a5fa, #06b6d4, #a78bfa);
  --gradient-hero: linear-gradient(135deg, #0a0e1a 0%, #0f1428 50%, #141a30 100%);
  --gradient-card: linear-gradient(135deg, rgba(79, 142, 247, 0.05), rgba(124, 90, 247, 0.05));
  --gradient-cta: linear-gradient(135deg, #4f8ef7, #7c5af7);
  --gradient-cta-hover: linear-gradient(135deg, #60a5fa, #8b6ff7);
  --gradient-gold: linear-gradient(135deg, #d4af37, #f0d060);
  --gradient-dark-overlay: linear-gradient(180deg, rgba(10, 14, 26, 0) 0%, rgba(10, 14, 26, 0.95) 100%);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow-blue: 0 0 20px rgba(79, 142, 247, 0.3);
  --shadow-glow-purple: 0 0 20px rgba(124, 90, 247, 0.3);
  --shadow-glow-gold: 0 0 12px rgba(212, 175, 55, 0.4);

  /* Blur */
  --blur-glass: blur(16px);
  --blur-strong: blur(24px);

  /* Typography */
  --font-body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.25rem;
  --space-xl: 1.5rem;
  --space-2xl: 1.75rem;
  --space-3xl: 2.25rem;
  --space-4xl: 3rem;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 900px;
  --header-height: 72px;
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --border-radius-full: 9999px;

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


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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary-light); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--secondary); }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, textarea { font-family: inherit; }

::selection {
  background: rgba(79, 142, 247, 0.3);
  color: #fff;
}


/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

h1 { font-size: clamp(1.9rem, 3.2vw, 2.35rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 2.5vw, 1.95rem); letter-spacing: -0.01em; }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gold {
  color: var(--accent-gold);
}

.text-secondary {
  color: var(--text-secondary);
}

.text-center { text-align: center; }
.text-mono { font-family: var(--font-mono); }


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

.container--narrow {
  max-width: var(--max-width-narrow);
}

.section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.section--alt {
  background: var(--bg-secondary);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section__header p {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  line-height: 1.7;
  max-width: 780px;
  margin: var(--space-sm) auto 0;
  font-weight: 400;
}

.section__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: rgba(79, 142, 247, 0.1);
  border: 1px solid var(--border-accent);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
  color: var(--primary-light);
  margin-bottom: var(--space-md);
  font-weight: 500;
}

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; }
.flex--center { align-items: center; justify-content: center; }
.flex--between { align-items: center; justify-content: space-between; }
.flex--gap { gap: var(--space-md); }
.flex--wrap { flex-wrap: wrap; }


/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header--scrolled {
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  box-shadow: 0 1px 0 var(--border-subtle), var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.header__logo img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  box-shadow: var(--shadow-glow-gold);
  border: 2px solid rgba(212, 175, 55, 0.3);
}

.header__logo span {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.header__nav a {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.header__nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 1px;
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

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

.header__nav a:hover::after {
  transform: scaleX(1);
}

.header__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: var(--space-sm);
  cursor: pointer;
}

.header__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition-base);
}


/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  border: none;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--gradient-cta);
  color: #fff;
  box-shadow: var(--shadow-glow-blue);
}

.btn--primary:hover {
  background: var(--gradient-cta-hover);
  box-shadow: 0 0 30px rgba(79, 142, 247, 0.5);
  transform: translateY(-2px);
  color: #fff;
}

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

.btn--secondary:hover {
  background: rgba(79, 142, 247, 0.1);
  border-color: var(--primary);
  color: var(--primary-light);
}

.btn--gold {
  background: var(--gradient-gold);
  color: #0a0e1a;
  box-shadow: var(--shadow-glow-gold);
}

.btn--gold:hover {
  box-shadow: 0 0 25px rgba(212, 175, 55, 0.6);
  transform: translateY(-2px);
  color: #0a0e1a;
}

.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 10px 20px;
}

.btn--ghost:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.btn--sm { padding: 8px 18px; font-size: var(--font-size-sm); }
.btn--lg { padding: 16px 36px; font-size: var(--font-size-lg); }
.btn--full { width: 100%; }

.btn-group {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}


/* --- Cards --- */
.card {
  background: var(--bg-card);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(79, 142, 247, 0.1), rgba(124, 90, 247, 0.05), transparent);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--border-radius-md);
  background: rgba(79, 142, 247, 0.1);
  margin-bottom: var(--space-md);
  font-size: 1.75rem;
}

.card__icon--green { background: var(--success-bg); }
.card__icon--yellow { background: var(--warning-bg); }
.card__icon--red { background: var(--danger-bg); }
.card__icon--purple { background: rgba(124, 90, 247, 0.1); }
.card__icon--gold { background: rgba(212, 175, 55, 0.1); }

.card__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.card__text {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.card__tag {
  display: inline-flex;
  padding: 2px 10px;
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  margin-top: var(--space-sm);
}

.card__tag--admin { background: rgba(79, 142, 247, 0.15); color: var(--primary-light); }
.card__tag--security { background: rgba(247, 90, 90, 0.15); color: var(--danger); }
.card__tag--management { background: rgba(212, 175, 55, 0.15); color: var(--accent-gold); }
.card__tag--accounting { background: rgba(34, 211, 160, 0.15); color: var(--success); }


/* --- Hero Section --- */
.hero {
  min-height: auto;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + 1.75rem) 0 2.5rem;
  position: relative;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 0;
}

.hero__bg::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(79, 142, 247, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse-glow 8s ease-in-out infinite;
}

.hero__bg::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(124, 90, 247, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse-glow 10s ease-in-out infinite reverse;
}

@keyframes pulse-glow {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 1; }
}

.hero__content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.hero__text h1 {
  margin-bottom: var(--space-md);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 560px;
}

.hero__badges {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  flex-wrap: wrap;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  font-weight: 500;
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}


/* --- Dashboard Mockup --- */
.dashboard-mockup {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.dashboard-mockup__titlebar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-md);
}

.dashboard-mockup__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dashboard-mockup__dot--red { background: var(--danger); }
.dashboard-mockup__dot--yellow { background: var(--warning); }
.dashboard-mockup__dot--green { background: var(--success); }

.dashboard-mockup__url {
  flex: 1;
  background: rgba(255, 255, 255, 0.05);
  padding: 4px 12px;
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-left: var(--space-sm);
}

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

.dashboard-mockup__stat {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-sm);
  padding: var(--space-md);
  text-align: center;
}

.dashboard-mockup__stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: 2px;
}

.dashboard-mockup__stat-label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.dashboard-mockup__hosts {
  margin-top: var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.dashboard-mockup__host-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px var(--space-sm);
  background: rgba(255, 255, 255, 0.02);
  border-radius: 6px;
  font-size: var(--font-size-xs);
  animation: host-appear 0.5s ease forwards;
  opacity: 0;
}

.dashboard-mockup__host-row:nth-child(1) { animation-delay: 0.2s; }
.dashboard-mockup__host-row:nth-child(2) { animation-delay: 0.4s; }
.dashboard-mockup__host-row:nth-child(3) { animation-delay: 0.6s; }
.dashboard-mockup__host-row:nth-child(4) { animation-delay: 0.8s; }
.dashboard-mockup__host-row:nth-child(5) { animation-delay: 1.0s; }

@keyframes host-appear {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

.dashboard-mockup__host-status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.dashboard-mockup__host-status--online {
  background: var(--success);
  box-shadow: 0 0 6px var(--success);
}

.dashboard-mockup__host-status--warning {
  background: var(--warning);
  box-shadow: 0 0 6px var(--warning);
}

.dashboard-mockup__host-status--offline {
  background: var(--danger);
  box-shadow: 0 0 6px var(--danger);
}

.dashboard-mockup__host-name {
  font-family: var(--font-mono);
  color: var(--text-secondary);
  flex: 1;
}

.dashboard-mockup__host-info {
  color: var(--text-muted);
}


/* --- Pain Points Section --- */
.pain-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.pain-header .card__icon {
  margin-bottom: 0;
  flex-shrink: 0;
}

.pain-card__problem {
  color: var(--danger);
  font-weight: 600;
  font-size: 1.05rem;
  line-height: 1.45;
  margin-bottom: 0;
}

.pain-card__solution {
  color: var(--success);
  font-weight: 500;
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 0;
}

.pain-card__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--gradient-cta);
  border-radius: 50%;
  color: white;
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: var(--space-md);
}


/* --- Module Tabs --- */
.module-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-2xl);
}

.module-tab {
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-base);
  font-weight: 500;
}

.module-tab:hover {
  border-color: var(--border-accent);
  color: var(--text-primary);
}

.module-tab.active {
  background: var(--gradient-cta);
  border-color: transparent;
  color: #fff;
  box-shadow: var(--shadow-glow-blue);
}

.module-content {
  display: none;
  animation: fadeInUp 0.4s ease;
}

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

.module-content__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.module-content__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.module-content__feature::before {
  content: '✓';
  color: var(--success);
  font-weight: 700;
  flex-shrink: 0;
}

.module-content__visual {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}


/* --- AI Chat Simulation --- */
.ai-chat {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  max-width: 600px;
  margin: 0 auto;
}

.ai-chat__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(79, 142, 247, 0.05);
}

.ai-chat__avatar {
  width: 32px;
  height: 32px;
  background: var(--gradient-cta);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
}

.ai-chat__name {
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.ai-chat__status {
  font-size: var(--font-size-xs);
  color: var(--success);
}

.ai-chat__messages {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  min-height: 250px;
}

.ai-chat__msg {
  max-width: 85%;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  line-height: 1.5;
  animation: fadeInUp 0.4s ease;
}

.ai-chat__msg--user {
  align-self: flex-end;
  background: var(--gradient-cta);
  color: white;
  border-bottom-right-radius: 4px;
}

.ai-chat__msg--ai {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  border-bottom-left-radius: 4px;
}

.ai-chat__typing {
  display: flex;
  gap: 4px;
  padding: var(--space-sm) var(--space-md);
}

.ai-chat__typing-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: typing-bounce 1.4s infinite;
}

.ai-chat__typing-dot:nth-child(2) { animation-delay: 0.2s; }
.ai-chat__typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}


/* --- Health Score Gauge --- */
.health-gauge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.health-gauge__circle {
  width: 180px;
  height: 180px;
  position: relative;
}

.health-gauge__circle svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.health-gauge__circle-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.05);
  stroke-width: 8;
}

.health-gauge__circle-value {
  fill: none;
  stroke: url(#healthGradient);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 502;
  stroke-dashoffset: 502;
  transition: stroke-dashoffset 2s ease;
}

.health-gauge__number {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-4xl);
  font-weight: 700;
}

.health-gauge__label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
}


/* --- Comparison Table --- */
.comparison-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: var(--font-size-sm);
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-md);
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
}

.comparison-table th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-secondary);
  position: sticky;
  top: var(--header-height);
  z-index: 10;
}

.comparison-table th:first-child,
.comparison-table td:first-child {
  text-align: left;
  font-weight: 500;
  color: var(--text-primary);
  position: sticky;
  left: 0;
  background: var(--bg-primary);
  z-index: 5;
  min-width: 200px;
}

.comparison-table .highlight-col {
  background: rgba(79, 142, 247, 0.05);
  border-left: 2px solid var(--primary);
  border-right: 2px solid var(--primary);
}

.comparison-table th.highlight-col {
  background: rgba(79, 142, 247, 0.15);
  color: var(--primary-light);
}

.comparison-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.check { color: var(--success); font-weight: 700; }
.cross { color: var(--danger); }
.partial { color: var(--warning); }

.comparison-table__wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
}


/* --- Pricing / Contact Section --- */
.pricing {
  text-align: center;
}

.contact-buttons {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-2xl);
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-2xl);
  background: var(--bg-card);
  backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  min-width: 220px;
  transition: all var(--transition-base);
  text-decoration: none;
  color: var(--text-primary);
}

.contact-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-blue);
  color: var(--text-primary);
}

.contact-card__icon {
  font-size: 2rem;
}

.contact-card__label {
  font-weight: 600;
}

.contact-card__value {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}


/* --- Contact Form --- */
.contact-form {
  max-width: 500px;
  margin: var(--space-2xl) auto 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.form-input,
.form-textarea {
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 142, 247, 0.15);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-status {
  padding: var(--space-md);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  display: none;
}

.form-status--success {
  display: block;
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(34, 211, 160, 0.2);
}

.form-status--error {
  display: block;
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(247, 90, 90, 0.2);
}


/* --- Architecture Infographic --- */
.arch-compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.arch-compare__col {
  padding: var(--space-xl);
  border-radius: var(--border-radius-lg);
}

.arch-compare__col--levscan {
  background: rgba(79, 142, 247, 0.05);
  border: 1px solid var(--border-accent);
}

.arch-compare__col--cloud {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  opacity: 0.6;
}

.arch-compare__vs {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 50%;
  font-weight: 700;
  color: var(--text-secondary);
  align-self: center;
}

.arch-compare__item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.arch-compare__item::before {
  font-size: 1.1rem;
  flex-shrink: 0;
}


/* --- Use Cases --- */
.usecase-card {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}

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

.usecase-card__title {
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.usecase-card__text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}


/* --- Counters --- */
.counter-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  text-align: center;
}

.counter__number {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.counter__label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: var(--space-xs);
}


/* --- Footer --- */
.footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
}

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

.footer__brand p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-top: var(--space-md);
  max-width: 320px;
}

.footer__col-title {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__links a {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}


/* --- Article Styles --- */
.article {
  padding-top: calc(var(--header-height) + var(--space-3xl));
}

.article__hero {
  text-align: center;
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-3xl);
}

.article__hero h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-md);
}

.article__hero p {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  max-width: 700px;
  margin: 0 auto;
}

.article__content {
  max-width: 800px;
  margin: 0 auto;
}

.article__content h2 {
  font-size: var(--font-size-2xl);
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-subtle);
}

.article__content h3 {
  font-size: var(--font-size-xl);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.article__content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.article__content ul {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.article__content li {
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
  position: relative;
  padding-left: var(--space-md);
}

.article__content li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--primary);
}


/* --- Infographic Bars --- */
.infographic-bar {
  margin-bottom: var(--space-md);
}

.infographic-bar__label {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-xs);
}

.infographic-bar__track {
  height: 8px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  overflow: hidden;
}

.infographic-bar__fill {
  height: 100%;
  border-radius: 4px;
  transition: width 1.5s ease;
  width: 0;
}

.infographic-bar__fill--blue { background: var(--gradient-cta); }
.infographic-bar__fill--green { background: linear-gradient(90deg, #22d3a0, #06b6d4); }
.infographic-bar__fill--gold { background: var(--gradient-gold); }
.infographic-bar__fill--red { background: linear-gradient(90deg, #f75a5a, #f7c948); }


/* --- Verdict Box --- */
.verdict-box {
  padding: var(--space-2xl);
  background: rgba(79, 142, 247, 0.05);
  border: 1px solid var(--border-accent);
  border-radius: var(--border-radius-lg);
  margin-top: var(--space-2xl);
}

.verdict-box__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.verdict-box p {
  color: var(--text-secondary);
  line-height: 1.7;
}


/* --- Scroll Animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

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

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


/* --- Mobile Navigation Overlay --- */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 14, 26, 0.98);
  backdrop-filter: var(--blur-strong);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
}

.mobile-nav.active {
  display: flex;
}

.mobile-nav a {
  font-size: var(--font-size-2xl);
  color: var(--text-primary);
  font-weight: 600;
}

.mobile-nav__close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 2rem;
  cursor: pointer;
}


/* --- Support & Partner Section --- */
.support-card {
  padding: var(--space-2xl);
  border-color: var(--border-accent);
  background: linear-gradient(135deg, rgba(15, 20, 40, 0.9), rgba(20, 30, 60, 0.75));
}

.support-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: var(--space-2xl);
  align-items: center;
}

.partner-logo-box {
  background: rgba(255, 255, 255, 0.95);
  padding: 12px 20px;
  border-radius: var(--border-radius-md);
  display: inline-block;
  width: fit-content;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  transition: transform var(--transition-base);
}

.partner-logo-box:hover {
  transform: translateY(-2px);
}

.partner-logo-img {
  height: 44px;
  width: auto;
  max-width: 100%;
  display: block;
}

.support-feature {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.support-feature:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-accent);
}


/* --- Responsive Design --- */
@media (max-width: 1024px) {
  .support-grid { grid-template-columns: 1fr; }
  .hero__content { grid-template-columns: 1fr; text-align: center; }
  .hero__subtitle { margin: 0 auto var(--space-2xl); }
  .hero__badges { justify-content: center; }
  .btn-group { justify-content: center; }
  .dashboard-mockup { max-width: 500px; margin: 0 auto; }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .module-content.active { grid-template-columns: 1fr; }
  .arch-compare { grid-template-columns: 1fr; }
  .arch-compare__vs { margin: 0 auto; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .counter-grid { grid-template-columns: repeat(2, 1fr); }

  h1 { font-size: var(--font-size-4xl); }
  h2 { font-size: var(--font-size-3xl); }
}

@media (max-width: 768px) {
  .header__nav { display: none; }
  .header__burger { display: flex; }

  .section { padding: var(--space-3xl) 0; }
  .grid--2 { grid-template-columns: 1fr; }
  .grid--3 { grid-template-columns: 1fr; }
  .grid--4 { grid-template-columns: 1fr; }

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

  .contact-buttons { flex-direction: column; align-items: center; }
  .contact-card { width: 100%; max-width: 320px; }

  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: var(--space-sm); text-align: center; }

  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-md); }
  .hero { min-height: auto; padding: calc(var(--header-height) + var(--space-2xl)) 0 var(--space-2xl); }
  .counter-grid { grid-template-columns: 1fr 1fr; }
  .module-tabs { gap: 4px; }
  .module-tab { padding: 6px 12px; font-size: var(--font-size-xs); }
}


/* --- Network Radar Animation --- */
.radar {
  width: 200px;
  height: 200px;
  position: relative;
  margin: 0 auto;
}

.radar__circle {
  position: absolute;
  border: 1px solid rgba(79, 142, 247, 0.15);
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.radar__circle--1 { width: 60px; height: 60px; }
.radar__circle--2 { width: 120px; height: 120px; }
.radar__circle--3 { width: 180px; height: 180px; }

.radar__sweep {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
  transform-origin: left center;
  animation: radar-sweep 3s linear infinite;
}

@keyframes radar-sweep {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.radar__dot {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
  animation: radar-blink 2s ease-in-out infinite;
}

@keyframes radar-blink {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}


/* --- Print Styles --- */
@media print {
  .header, .footer, .mobile-nav, .btn, .contact-form { display: none !important; }
  body { background: #fff; color: #1a1a1a; }
  .card { border: 1px solid #ddd; background: #fff; }
  .section { padding: 1rem 0; }
}


/* ============================================================
   Comparison Article Compatibility Classes
   (Used by compare-*.html article pages)
   ============================================================ */

/* Header compatibility */
.main-header,
.main-header.glass-panel {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  box-shadow: 0 1px 0 var(--border-subtle), var(--shadow-sm);
  display: flex;
  align-items: center;
}

.header-container,
.nav-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text-primary);
}

.logo-img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  box-shadow: var(--shadow-glow-gold);
  border: 2px solid rgba(212, 175, 55, 0.3);
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.main-nav a {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Glass Card */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: var(--blur-glass);
  -webkit-backdrop-filter: var(--blur-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl);
  position: relative;
  margin-bottom: var(--space-xl);
}

.glass-card.gradient-border {
  border-color: var(--border-accent);
}

/* Gradient Text */
.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.highlight-text {
  color: var(--primary-light);
  font-weight: 600;
}

/* Article page body */
.dark-glass-theme,
.dark-theme {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

/* Article Hero */
.article-hero,
.comparison-hero {
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
}

.article-hero h1,
.comparison-hero h1 {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--space-md);
}

.subtitle {
  color: var(--text-secondary);
  font-size: var(--font-size-lg);
  max-width: 700px;
  margin: var(--space-md) auto 0;
}

/* Article Sections */
.overview-section,
.comparison-section,
.infographics-section,
.analysis-section,
.cta-section,
.content-section {
  padding: var(--space-3xl) 0;
}

/* Button compatibility */
.btn-primary {
  background: var(--gradient-cta);
  color: #fff;
  box-shadow: var(--shadow-glow-blue);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border: none;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-base);
}

.btn-primary:hover {
  background: var(--gradient-cta-hover);
  box-shadow: 0 0 30px rgba(79, 142, 247, 0.5);
  transform: translateY(-2px);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-accent);
  display: inline-flex;
  align-items: center;
  padding: 12px 28px;
  border-radius: var(--border-radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-base);
}

.btn-secondary:hover {
  background: rgba(79, 142, 247, 0.1);
  color: var(--primary-light);
}

.cta-btn {
  margin-left: var(--space-sm);
}

.neon-glow {
  box-shadow: 0 0 20px rgba(79, 142, 247, 0.4);
}

.neon-glow:hover {
  box-shadow: 0 0 30px rgba(79, 142, 247, 0.6);
}

/* CTA Buttons group */
.cta-buttons,
.contact-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--space-xl);
}

/* Comparison table article version */
.comparison-table-container {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  margin: var(--space-xl) 0;
}

/* Check icons in tables */
.check-yes, .icon-check, .icon-yes { color: var(--success); font-weight: 700; }
.check-no, .icon-cross, .icon-no { color: var(--danger); }
.check-warn, .icon-warn { color: var(--warning); }

/* Infographic bars (article version) */
.infographic-bar-container,
.infographic-bars {
  margin: var(--space-xl) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.bar-container,
.bar-wrapper {
  margin-bottom: var(--space-md);
}

.bar-name {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.bar-label {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.bar-bg {
  height: 10px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 5px;
  overflow: hidden;
  margin-top: 4px;
}

.bar-fill-lev {
  height: 100%;
  background: var(--gradient-cta);
  border-radius: 5px;
  transition: width 1.5s ease;
}

.bar-fill-prtg,
.bar-fill-zabbix,
.bar-fill-10strike,
.bar-fill-tnm {
  height: 100%;
  background: rgba(148, 163, 184, 0.3);
  border-radius: 5px;
  transition: width 1.5s ease;
}

/* Infographic bar colors */
.infographic-bar.success .bar-bg,
.infographic-bar.success {
  color: var(--success);
}

.infographic-bar.warning {
  color: var(--warning);
}

.infographic-bar.danger {
  color: var(--danger);
}

/* Grid helpers */
.grid-2-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.text-left { text-align: left; }
.mt-4 { margin-top: var(--space-2xl); }

/* Footer article version */
.footer-links {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

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

/* Responsive overrides for articles */
@media (max-width: 768px) {
  .main-nav { display: none; }
  .grid-2-col { grid-template-columns: 1fr; }
  .article-hero h1,
  .comparison-hero h1 { font-size: var(--font-size-2xl); }
}