:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-accent: #f0f9ff;
  --surface: #ffffff;
  --surface-hover: #fafbfc;
  --accent: #0066ff;
  --accent-2: #00d4aa;
  --accent-light: #e0f2fe;
  --text: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border-light: #e2e8f0;
  --border-medium: #cbd5e1;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  --spacing-3xl: 96px;
  --font: "Plus Jakarta Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 20%, #ffffff 80%, #f8fafc 100%);
  background-attachment: fixed;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.wrap {
  width: min(1280px, 90vw);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px) saturate(150%);
  background: rgba(255, 255, 255, 0.7);
  border-bottom: 1px solid transparent;
  box-shadow: none;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.topbar::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity 0.4s ease;
}

.topbar.scrolled::after {
  opacity: 1;
}

.topbar.scrolled {
  backdrop-filter: blur(20px) saturate(180%);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
}

.topbar .wrap {
  padding: var(--spacing-sm) 0;
  transition: padding 0.3s ease;
}

.topbar.scrolled .wrap {
  padding: 12px 0;
}

.logo {
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.04em;
  transition: all 0.3s ease;
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
  display: inline-block;
}

.logo:hover {
  transform: scale(1.05);
}

.topbar.scrolled .logo {
  font-size: 1.3rem;
}

.logo span {
  color: var(--accent-2);
  transition: color 0.3s ease;
}

.logo:hover span {
  color: var(--accent);
}

.main-nav {
  display: flex;
  gap: 24px;
}

.main-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.3s ease;
}

.main-nav a:hover::after,
.main-nav a:focus::after {
  width: 100%;
}

.main-nav a:hover,
.main-nav a:focus {
  color: var(--accent);
}

.nav-cta {
  padding: 12px 24px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #ffffff !important;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.25);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 102, 255, 0.35);
}

.nav-cta::after {
  display: none;
}

.menu-toggle,
.mobile-nav {
  display: none;
}

.hero {
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  background: linear-gradient(135deg, #ffffff 0%, #f0f9ff 50%, #e0f2fe 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 102, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 212, 170, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  z-index: 0;
}

.hero-content {
  align-items: flex-start;
  position: relative;
  z-index: 1;
}

.hero-copy {
  flex: 1 1 54%;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 10px 20px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(0, 212, 170, 0.1));
  border: 1px solid rgba(0, 102, 255, 0.2);
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

h1 {
  margin: var(--spacing-md) 0;
  font-size: clamp(2.8rem, 5vw, 4.2rem);
  line-height: 1.1;
  font-weight: 900;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-copy p {
  margin-bottom: var(--spacing-lg);
  color: var(--text-secondary);
  font-size: 1.15rem;
  line-height: 1.7;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 16px 32px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #ffffff;
  box-shadow: 0 8px 24px rgba(0, 102, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.btn.primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--accent-2) 0%, var(--accent) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.btn.primary:hover::before {
  opacity: 1;
}

.btn.primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 102, 255, 0.4);
}

.btn.primary > * {
  position: relative;
  z-index: 1;
}

.btn.outline {
  border: 2px solid var(--border-medium);
  color: var(--text);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.btn.outline:hover {
  transform: translateY(-2px);
  background: var(--surface-hover);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-md);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}

.hero-metrics strong {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.hero-metrics span {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
  font-weight: 600;
}

.hero-visual {
  position: relative;
  flex: 1 1 40%;
  min-height: 320px;
  display: grid;
  place-items: center;
}

.orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed rgba(0, 102, 255, 0.2);
}

.orbit-a {
  width: 340px;
  height: 340px;
  animation: spin 14s linear infinite;
}

.orbit-b {
  width: 260px;
  height: 260px;
  animation: spin 18s linear infinite reverse;
}

.device-card {
  position: relative;
  width: min(350px, 90%);
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  border: 2px solid var(--border-light);
  box-shadow: var(--shadow-xl);
  display: grid;
  gap: var(--spacing-sm);
  backdrop-filter: blur(10px);
}

.device-title {
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.02em;
  color: var(--accent);
}

.device-card ul {
  margin: 0;
  padding-left: var(--spacing-md);
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.device-card ul li::marker {
  color: var(--accent-2);
}

.device-status {
  font-size: 0.85rem;
  color: var(--accent-2);
  font-weight: 700;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.1), rgba(0, 102, 255, 0.1));
  border-radius: var(--radius-sm);
  display: inline-block;
  border: 1px solid rgba(0, 212, 170, 0.2);
}

.section {
  padding: var(--spacing-3xl) 0;
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.section.in-view {
  opacity: 1;
  transform: translateY(0);
}

.section .wrap {
  flex-direction: column;
  align-items: flex-start;
}

.section-label {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.08), rgba(0, 212, 170, 0.08));
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 102, 255, 0.15);
}

.section h2 {
  margin: 0 0 var(--spacing-md) 0;
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 900;
  line-height: 1.2;
  color: var(--text);
}

.section > .wrap > p {
  max-width: 800px;
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
  margin: 0 0 var(--spacing-xl);
}

.essence-grid,
.capabilities-grid {
  display: grid;
  gap: var(--spacing-lg);
  width: 100%;
}

.essence-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.essence-grid article,
.capabilities-grid article {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.essence-grid article::before,
.capabilities-grid article::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.essence-grid article:hover::before,
.capabilities-grid article:hover::before {
  transform: scaleX(1);
}

.essence-grid article:hover,
.capabilities-grid article:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(0, 102, 255, 0.3);
}

.essence-grid h3,
.capabilities-grid h3 {
  margin: 0 0 var(--spacing-sm);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text);
}

.essence-grid p,
.capabilities-grid p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.7;
}

.capabilities-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.versions {
  position: relative;
  background: linear-gradient(180deg, transparent 0%, #f0f9ff 50%, transparent 100%);
}

.versions::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(0, 102, 255, 0.06), rgba(0, 212, 170, 0.04) 50%, transparent 75%);
  pointer-events: none;
  z-index: 0;
}

.section-intro {
  margin-top: -12px;
}

.persona-filters {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.persona-btn {
  border: 2px solid var(--border-light);
  background: var(--surface);
  color: var(--text-secondary);
  border-radius: 999px;
  padding: 12px 28px;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
}

.persona-btn:hover,
.persona-btn:focus {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.persona-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 8px 20px rgba(0, 102, 255, 0.3);
  transform: scale(1.05);
}

.version-grid {
  width: 100%;
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  position: relative;
  z-index: 1;
}

.version-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl) var(--spacing-lg);
  border: 2px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  display: grid;
  gap: var(--spacing-md);
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.version-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.version-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(0, 102, 255, 0.3);
}

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

.version-card::after {
  content: attr(data-badge);
  position: absolute;
  top: 28px;
  right: -65px;
  transform: rotate(38deg);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: #ffffff;
  padding: 10px 75px;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-size: 0.7rem;
  opacity: var(--badge-opacity, 0);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

.version-card[data-highlight="true"] {
  border: 2px solid rgba(0, 102, 255, 0.5);
  background: linear-gradient(135deg, rgba(255, 255, 255, 1) 0%, rgba(240, 249, 255, 0.9) 100%);
}

.version-card[data-highlight="true"]::after {
  --badge-opacity: 1;
}

.version-card h3 {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--text);
}

.version-card .version-tagline {
  color: var(--accent-2);
  font-weight: 700;
  font-size: 0.95rem;
}

.version-price {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-top: 2px solid var(--border-light);
  border-bottom: 2px solid var(--border-light);
  margin: var(--spacing-xs) 0;
}

.version-price strong {
  font-size: 2.5rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.version-price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 600;
}

.version-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.version-badges span {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.08), rgba(0, 212, 170, 0.08));
  border: 1px solid rgba(0, 102, 255, 0.15);
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 700;
}

.version-features {
  margin: 0;
  padding-left: var(--spacing-md);
  color: var(--text-secondary);
  display: grid;
  gap: var(--spacing-xs);
  line-height: 1.6;
}

.version-features li {
  position: relative;
}

.version-features li::marker {
  color: var(--accent);
}

.version-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.erp-spotlight .erp-grid {
  width: 100%;
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.erp-spotlight article {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  border: 2px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(10px);
  transition: all 0.4s ease;
}

.erp-spotlight article:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(0, 102, 255, 0.3);
}

.erp-spotlight h3 {
  margin-top: 0;
  margin-bottom: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
}

.erp-spotlight .diagnostic-intro,
.erp-spotlight .results-intro {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  line-height: 1.6;
}

.erp-spotlight ul {
  margin: 0;
  padding-left: var(--spacing-md);
  color: var(--text-secondary);
  display: grid;
  gap: var(--spacing-sm);
  line-height: 1.6;
}

.erp-spotlight ul li strong {
  color: var(--accent);
  font-weight: 700;
}

.results-metrics {
  display: grid;
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.05), rgba(0, 212, 170, 0.05));
  border-radius: var(--radius-md);
  border: 2px solid rgba(0, 102, 255, 0.15);
}

.results-metrics .metric {
  text-align: center;
  padding: var(--spacing-sm);
}

.results-metrics .metric strong {
  display: block;
  font-size: 2.2rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-xs);
}

.results-metrics .metric span {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
}

.results-cta {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  background: linear-gradient(135deg, rgba(0, 212, 170, 0.08), rgba(0, 102, 255, 0.08));
  border-radius: var(--radius-md);
  border-left: 4px solid var(--accent-2);
  color: var(--text-secondary);
  font-weight: 600;
  line-height: 1.6;
}

.cta {
  position: relative;
}

.cta-card {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(240, 249, 255, 0.8) 0%, rgba(224, 242, 254, 0.8) 100%);
  border: 2px solid var(--border-light);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 102, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-card h2 {
  margin-top: 0;
  font-weight: 900;
  font-size: 2rem;
  position: relative;
  z-index: 1;
}

.cta-card ul {
  margin: var(--spacing-md) 0 0;
  padding-left: var(--spacing-md);
  color: var(--text-secondary);
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

.cta-card ul li::marker {
  color: var(--accent);
}

.cta-actions {
  display: grid;
  gap: var(--spacing-sm);
  align-content: start;
  position: relative;
  z-index: 1;
}

.site-footer {
  padding: var(--spacing-xl) 0;
  border-top: 2px solid var(--border-light);
  margin-top: var(--spacing-3xl);
  background: linear-gradient(180deg, var(--bg-secondary) 0%, #ffffff 100%);
}

.footer-brand {
  font-weight: 900;
  font-size: 1.3rem;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-footer p {
  margin: 0;
  color: var(--text-secondary);
  font-weight: 500;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes logoBounce {
  0%, 100% {
    transform: scale(1);
  }
  25% {
    transform: scale(1.1);
  }
  50% {
    transform: scale(0.95);
  }
  75% {
    transform: scale(1.05);
  }
}

/* Tablet & Mobile Navigation */
@media (max-width: 900px) {
  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: block;
    background: var(--surface);
    border: 2px solid var(--border-light);
    color: var(--text);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 700;
    transition: all 0.3s ease;
  }

  .menu-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
  }

  .mobile-nav {
    display: grid;
    gap: 0;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-bottom: 2px solid var(--border-light);
    box-shadow: var(--shadow-lg);
    transform-origin: top;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .mobile-nav.open {
    max-height: 400px;
  }

  .mobile-nav a {
    color: var(--text);
    text-decoration: none;
    font-weight: 700;
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border-light);
    transition: all 0.3s ease;
    border-radius: var(--radius-sm);
  }

  .mobile-nav a:hover {
    background: var(--bg-accent);
    color: var(--accent);
    padding-left: var(--spacing-md);
  }

  .mobile-nav a:last-child {
    border-bottom: none;
  }
}

/* Tablet Adjustments */
@media (max-width: 900px) {
  .wrap {
    width: min(1280px, 95vw);
  }

  .hero {
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }

  .essence-grid,
  .capabilities-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-md);
  }

  .version-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }

  .erp-spotlight .erp-grid {
    grid-template-columns: 1fr;
  }

  .cta-card {
    padding: var(--spacing-xl);
    gap: var(--spacing-lg);
  }
}

/* Mobile Landscape & Small Tablets */
@media (max-width: 768px) {
  :root {
    --spacing-xl: 40px;
    --spacing-2xl: 56px;
    --spacing-3xl: 80px;
  }

  h1 {
    font-size: clamp(2.2rem, 8vw, 3.2rem) !important;
    line-height: 1.15;
  }

  .section h2 {
    font-size: clamp(1.8rem, 6vw, 2.8rem) !important;
  }

  .hero::before,
  .hero::after {
    width: 500px;
    height: 500px;
  }

  .btn {
    padding: 14px 28px;
    font-size: 0.95rem;
  }

  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
  }

  .persona-filters {
    justify-content: center;
    gap: var(--spacing-xs);
  }

  .persona-btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }

  .version-card {
    padding: var(--spacing-lg);
  }

  .device-card {
    width: min(300px, 100%);
  }

  .orbit-a {
    width: 280px !important;
    height: 280px !important;
  }

  .orbit-b {
    width: 200px !important;
    height: 200px !important;
  }
}

/* Mobile Portrait */
@media (max-width: 640px) {
  :root {
    --spacing-sm: 12px;
    --spacing-md: 20px;
    --spacing-lg: 28px;
    --spacing-xl: 36px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
  }

  .wrap {
    width: 92vw;
    gap: var(--spacing-md);
  }

  .topbar .wrap {
    padding: var(--spacing-sm) 0;
  }

  .logo {
    font-size: 1.2rem;
  }

  .wrap {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  .hero {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
  }

  .hero::before {
    top: -30%;
    right: -40%;
    width: 400px;
    height: 400px;
  }

  .hero::after {
    bottom: -20%;
    left: -30%;
    width: 350px;
    height: 350px;
  }

  .hero-content {
    flex-direction: column;
    gap: var(--spacing-lg);
  }

  .hero-copy {
    align-items: center;
    text-align: center;
  }

  .hero-copy p {
    max-width: 100%;
  }

  h1 {
    margin: var(--spacing-sm) 0;
  }

  .tag {
    padding: 8px 16px;
    font-size: 0.7rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: var(--spacing-sm);
  }

  .btn {
    width: 100%;
    padding: 16px;
    justify-content: center;
  }

  .hero-metrics {
    grid-template-columns: 1fr 1fr;
    padding: var(--spacing-md);
  }

  .hero-metrics strong {
    font-size: 1.6rem;
  }

  .hero-metrics span {
    font-size: 0.8rem;
  }

  .hero-visual {
    margin-top: var(--spacing-lg);
    min-height: 280px;
  }

  .device-card {
    width: 100%;
    padding: var(--spacing-md);
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }

  .section-label {
    font-size: 0.7rem;
    padding: 6px var(--spacing-sm);
  }

  .section > .wrap > p {
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
  }

  .essence-grid,
  .capabilities-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .essence-grid article,
  .capabilities-grid article {
    padding: var(--spacing-lg);
  }

  .versions::before {
    background: radial-gradient(circle at center, rgba(0, 102, 255, 0.04), rgba(0, 212, 170, 0.03) 50%, transparent 75%);
  }

  .persona-filters {
    flex-wrap: wrap;
    gap: var(--spacing-xs);
  }

  .persona-btn {
    flex: 1 1 auto;
    min-width: 120px;
    padding: 10px 16px;
    font-size: 0.85rem;
  }

  .version-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .version-card {
    padding: var(--spacing-lg);
  }

  .version-card h3 {
    font-size: 1.5rem;
  }

  .version-price strong {
    font-size: 2rem;
  }

  .version-actions {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .version-actions .btn {
    width: 100%;
  }

  .erp-spotlight .erp-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .erp-spotlight article {
    padding: var(--spacing-lg);
  }

  .erp-spotlight h3 {
    font-size: 1.3rem;
  }

  .results-metrics {
    padding: var(--spacing-md);
  }

  .results-metrics .metric strong {
    font-size: 1.8rem;
  }

  .cta-card {
    grid-template-columns: 1fr;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    text-align: center;
  }

  .cta-card h2 {
    font-size: 1.6rem;
  }

  .cta-card::before {
    width: 300px;
    height: 300px;
    top: -30%;
    right: -30%;
  }

  .cta-actions {
    gap: var(--spacing-sm);
  }

  .cta-actions .btn {
    width: 100%;
  }

  .site-footer {
    text-align: center;
  }

  .site-footer .wrap {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}

/* Small Mobile Devices */
@media (max-width: 400px) {
  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .version-card::after {
    font-size: 0.6rem;
    padding: 8px 60px;
    right: -55px;
  }

  .orbit-a,
  .orbit-b {
    display: none;
  }

  .hero-visual {
    min-height: 240px;
  }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
  .btn,
  .persona-btn,
  .menu-toggle,
  .mobile-nav a {
    min-height: 44px;
    min-width: 44px;
  }

  .version-card:hover,
  .essence-grid article:hover,
  .capabilities-grid article:hover,
  .erp-spotlight article:hover {
    transform: none;
  }

  .version-card:active,
  .essence-grid article:active,
  .capabilities-grid article:active {
    transform: scale(0.98);
  }
}

/* High Resolution Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
}

/* Reduce Motion for Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .orbit-a,
  .orbit-b {
    animation: none !important;
  }
}