:root {
  --bg-base: #060709;
  --bg-surface: #0B0D12;
  --bg-surface-elevated: #11141C;
  --bg-glass: rgba(11, 13, 18, 0.78);
  --bg-glass-card: rgba(17, 20, 28, 0.72);
  --bg-glass-hover: rgba(22, 27, 38, 0.92);

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.12);
  --border-accent: rgba(0, 229, 255, 0.35);

  --text-primary: #FFFFFF;
  --text-secondary: #949CAE;
  --text-muted: #586072;

  --accent-cyan: #00E5FF;
  --accent-blue: #2B7FFF;
  --accent-gradient: linear-gradient(135deg, #00E5FF 0%, #2B7FFF 100%);
  --accent-glow: 0 0 28px rgba(0, 229, 255, 0.15);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

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

html {
  background-color: var(--bg-base);
  color-scheme: dark;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.accent-cyan { color: var(--accent-cyan); }
.hidden { display: none !important; }

/* Background Noise / Atmosphere */
.ambient-glow {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(140px);
  z-index: 0;
}

.ambient-glow-1 {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.08) 0%, rgba(0, 229, 255, 0) 70%);
  top: -160px;
  left: -120px;
}

.ambient-glow-2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(43, 127, 255, 0.07) 0%, rgba(43, 127, 255, 0) 70%);
  top: 250px;
  right: -150px;
}

/* Header & Navigation */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 18px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.brand-details {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: #FFFFFF;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.nav-link:hover {
  color: #FFFFFF;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  text-align: center;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.82rem;
}

.btn-md {
  padding: 12px 22px;
  font-size: 0.92rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 0.98rem;
}

.btn-block {
  width: 100%;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-base);
  box-shadow: 0 4px 14px rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
  background: #E2E8F0;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.16);
}

.btn-accent {
  background: var(--accent-gradient);
  color: #040608;
  font-weight: 700;
  box-shadow: var(--accent-glow);
}

.btn-accent:hover {
  transform: translateY(-1px);
  filter: brightness(1.08);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.btn-secondary:hover {
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.05);
}

/* Hero Section */
.hero {
  position: relative;
  padding: 92px 0 76px;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.status-indicator {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin-bottom: 22px;
  max-width: 960px;
}

.hero-description {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 780px;
  margin-bottom: 36px;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

/* Pedigree & Client Track Record Strip */
.pedigree-strip {
  padding-top: 28px;
  border-top: 1px solid var(--border-subtle);
}

.pedigree-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: block;
}

.pedigree-logos {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.pedigree-item {
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  opacity: 0.75;
  transition: opacity 0.2s;
}

.pedigree-item:hover {
  opacity: 1;
  color: #FFFFFF;
}

/* 4-Metric Proof Bar */
.metrics-section {
  padding: 48px 0;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.metric-card {
  display: flex;
  flex-direction: column;
}

.metric-value {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 6px;
  color: #FFFFFF;
}

.metric-label {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

/* Section Common Styling */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  margin-bottom: 56px;
  max-width: 780px;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Engineering Divisions Architecture (3 Clusters x 3 Pillars) */
.division-wrapper {
  margin-bottom: 64px;
}

.division-wrapper:last-child {
  margin-bottom: 0;
}

.division-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.division-number {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.division-name {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: #FFFFFF;
}

.division-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.pillar-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 30px;
  display: flex;
  flex-direction: column;
  transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.pillar-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
}

.pillar-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.pillar-id {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.pillar-lead {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.pillar-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 10px;
  line-height: 1.3;
}

.pillar-summary {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 20px;
}

.pillar-specs {
  list-style: none;
  margin-bottom: 24px;
  flex-grow: 1;
}

.pillar-specs li {
  font-size: 0.82rem;
  color: #D1D5DB;
  line-height: 1.5;
  margin-bottom: 10px;
  padding-left: 14px;
  position: relative;
}

.pillar-specs li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

.pillar-specs li strong {
  color: #FFFFFF;
}

.pillar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 3px 8px;
  border-radius: 4px;
}

/* Leadership Showcase Section */
.leadership-section {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.leaders-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 32px;
}

.leader-card {
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
}

.leader-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
}

.leader-avatar {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-strong);
  color: #FFFFFF;
  font-weight: 800;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.leader-avatar-accent {
  background: var(--accent-gradient);
  color: #040608;
}

.leader-name {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 3px;
}

.leader-role {
  font-size: 0.86rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.leader-meta {
  font-size: 0.76rem;
  color: var(--text-muted);
}

.leader-quote {
  font-style: italic;
  font-size: 0.95rem;
  color: #F1F5F9;
  border-left: 2px solid var(--accent-cyan);
  padding: 12px 18px;
  background: rgba(0, 229, 255, 0.03);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 22px;
  line-height: 1.55;
}

.leader-bio {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.leader-subhead {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: block;
}

.leader-pillars-list {
  list-style: none;
  margin-bottom: 24px;
}

.leader-pillars-list li {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 10px;
  padding-left: 16px;
  position: relative;
}

.leader-pillars-list li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
}

.leader-pillars-list strong {
  color: #FFFFFF;
}

.cert-strip {
  padding-top: 20px;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.cert-strip strong {
  color: #FFFFFF;
}

/* Interactive Engineering Calculator */
.calc-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.slider-block {
  margin-bottom: 28px;
}

.slider-top {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 0.92rem;
  font-weight: 600;
}

.slider-display {
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  font-size: 0.96rem;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent-cyan);
  cursor: pointer;
}

.calc-output {
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px;
}

.calc-output h4 {
  font-size: 1.05rem;
  margin-bottom: 20px;
  color: #FFFFFF;
}

.calc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.calc-row:last-of-type {
  border-bottom: none;
}

.calc-label {
  font-size: 0.86rem;
  color: var(--text-secondary);
}

.calc-val {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 800;
  color: #FFFFFF;
}

/* Consultation & Google Meet Section */
.consultation-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 48px;
}

.meet-dispatch-box {
  background: rgba(0, 229, 255, 0.03);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-top: 24px;
}

.meet-dispatch-box h4 {
  font-size: 1.05rem;
  margin-bottom: 6px;
  color: #FFFFFF;
}

.meet-dispatch-box p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.consultation-form {
  display: flex;
  flex-direction: column;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  color: #FFFFFF;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
}

.form-footnote {
  font-size: 0.74rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 10px;
}

.form-feedback {
  margin-top: 16px;
  padding: 14px;
  border-radius: var(--radius-sm);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid var(--border-accent);
  color: var(--accent-cyan);
  font-size: 0.88rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 64px 0 32px;
  background: var(--bg-base);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 32px;
}

.footer-copy {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 1024px) {
  .division-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .leaders-grid,
  .calc-card,
  .consultation-card {
    grid-template-columns: 1fr;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .division-grid,
  .metrics-grid,
  .form-row {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .nav-menu {
    display: none;
  }
}