/* ==========================================================================
   VB2 PRECISION TECH — MODERN AIRY & HIGH-LEGIBILITY DESIGN SYSTEM
   ========================================================================== */

:root {
  /* Surface Layers (Refined Obsidian Glass & Deep Slate) */
  --bg-deep: #080C14;
  --bg-canvas: #0D131F;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(24, 33, 53, 0.9);
  --bg-elevated: rgba(30, 41, 64, 0.8);
  --bg-glass: rgba(15, 23, 42, 0.65);
  
  /* Text Hierarchy (High-Contrast & Airy Legibility) */
  --text-primary: #FFFFFF;
  --text-secondary: #E2E8F0;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  /* Borders & Gradients */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(255, 255, 255, 0.12);
  --border-card-hover: rgba(0, 242, 254, 0.4);
  --border-focus: rgba(0, 242, 254, 0.6);
  
  /* Modern Accent Palette */
  --accent-cyan: #00F2FE;
  --accent-cyan-subtle: rgba(0, 242, 254, 0.12);
  --accent-cyan-glow: rgba(0, 242, 254, 0.25);
  
  --accent-emerald: #00F5A0;
  --accent-emerald-subtle: rgba(0, 245, 160, 0.12);
  --accent-emerald-glow: rgba(0, 245, 160, 0.25);
  
  --accent-violet: #B366FF;
  --accent-violet-subtle: rgba(179, 102, 255, 0.12);
  --accent-violet-glow: rgba(179, 102, 255, 0.25);
  
  --accent-amber: #FBBF24;
  --accent-amber-subtle: rgba(251, 191, 36, 0.12);
  --accent-amber-glow: rgba(251, 191, 36, 0.25);

  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-brand: 'Orbitron', var(--font-main);

  /* Geometry & Radii */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Transitions & Shadows */
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --shadow-card-hover: 0 20px 40px -12px rgba(0, 0, 0, 0.7), 0 0 25px rgba(0, 242, 254, 0.15);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-deep);
  color: var(--text-secondary);
  font-family: var(--font-main);
  line-height: 1.65;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Ambient Radiant Background */
.ambient-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.22;
  transition: opacity 0.5s ease;
}

.glow-top {
  top: -200px;
  right: -100px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, var(--accent-cyan), rgba(0, 242, 254, 0.2) 40%, transparent 70%);
}

.glow-bottom {
  bottom: 10%;
  left: -200px;
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, var(--accent-violet), rgba(179, 102, 255, 0.2) 40%, transparent 70%);
}

.glow-mid {
  top: 45%;
  right: -150px;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, var(--accent-emerald), rgba(0, 245, 160, 0.15) 40%, transparent 70%);
}

.section-container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Animated SVG Logo & Brand Components
   ========================================================================== */
.brand-entity {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #fff;
  transition: transform var(--transition-fast);
}

.brand-entity:hover {
  transform: translateY(-1px);
}

.vb2-logo-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.vb2-logo-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.logo-ring {
  stroke: url(#logoGradient);
  stroke-width: 2.5;
  stroke-dasharray: 90 30;
  stroke-dashoffset: 0;
  animation: logoSpin 6s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  transform-origin: center;
}

.logo-inner-ring {
  stroke: rgba(255, 255, 255, 0.15);
  stroke-width: 1.5;
  stroke-dasharray: 4 4;
  animation: logoSpinReverse 12s linear infinite;
  transform-origin: center;
}

.logo-symbol {
  fill: url(#logoGradientText);
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: 13px;
  text-anchor: middle;
  dominant-baseline: central;
  filter: drop-shadow(0 0 6px rgba(0, 242, 254, 0.6));
}

.logo-pulse-dot {
  fill: var(--accent-cyan);
  animation: pulseDot 2s ease-in-out infinite;
}

@keyframes logoSpin {
  0% { transform: rotate(0deg); stroke-dashoffset: 0; }
  50% { stroke-dashoffset: 120; }
  100% { transform: rotate(360deg); stroke-dashoffset: 240; }
}

@keyframes logoSpinReverse {
  0% { transform: rotate(360deg); }
  100% { transform: rotate(0deg); }
}

@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.4); opacity: 1; filter: drop-shadow(0 0 8px #00F2FE); }
}

.brand-text-block {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-brand);
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 0.5px;
  color: #FFFFFF;
  line-height: 1.1;
  display: flex;
  align-items: center;
  gap: 2px;
}

.brand-accent {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-emerald));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 2px;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 500;
}

/* ==========================================================================
   Header Navigation
   ========================================================================== */
.precision-header {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(8, 12, 20, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 100;
  padding: 14px 0;
  transition: background var(--transition-normal);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-item {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: color var(--transition-fast), transform var(--transition-fast);
  position: relative;
  padding: 6px 0;
}

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

.nav-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-emerald));
  transition: width var(--transition-normal);
  border-radius: var(--radius-full);
}

.nav-item:hover::after {
  width: 100%;
}

.nav-telemetry {
  display: flex;
  align-items: center;
  gap: 16px;
}

.telemetry-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Status Indicators with Smooth Pulse */
.status-marker {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  position: relative;
}

.status-marker::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  border-radius: 50%;
  animation: markerPulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.status-marker.live {
  background-color: var(--accent-emerald);
}
.status-marker.live::after {
  border: 1.5px solid var(--accent-emerald);
}

.status-marker.warning {
  background-color: var(--accent-amber);
}
.status-marker.warning::after {
  border: 1.5px solid var(--accent-amber);
}

.status-marker.rd {
  background-color: var(--accent-cyan);
}
.status-marker.rd::after {
  border: 1.5px solid var(--accent-cyan);
}

.status-marker.private {
  background-color: var(--accent-violet);
}
.status-marker.private::after {
  border: 1.5px solid var(--accent-violet);
}

@keyframes markerPulse {
  0% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.8); opacity: 0; }
  100% { transform: scale(1); opacity: 0; }
}

/* ==========================================================================
   Buttons & UI Elements
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  outline: none;
}

.btn-primary-cyan {
  background: linear-gradient(135deg, #00F2FE 0%, #00C6FF 100%);
  color: #06090E;
  box-shadow: 0 4px 20px rgba(0, 242, 254, 0.35);
}

.btn-primary-cyan:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 242, 254, 0.5);
  background: linear-gradient(135deg, #33F5FF 0%, #00F2FE 100%);
}

.btn-outline-subtle {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  backdrop-filter: blur(10px);
}

.btn-outline-subtle:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.btn-ghost-cyan {
  background: var(--accent-cyan-subtle);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 242, 254, 0.25);
}

.btn-ghost-cyan:hover {
  background: rgba(0, 242, 254, 0.2);
  border-color: var(--accent-cyan);
  color: #FFFFFF;
  box-shadow: 0 0 15px var(--accent-cyan-glow);
}

.btn-ghost-vk {
  background: rgba(76, 117, 163, 0.12);
  color: #4C75A3;
  border: 1px solid rgba(76, 117, 163, 0.25);
}

.btn-ghost-vk:hover {
  background: rgba(76, 117, 163, 0.2);
  border-color: #4C75A3;
  color: #FFFFFF;
  box-shadow: 0 0 15px rgba(76, 117, 163, 0.25);
}

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

.btn-xs {
  padding: 6px 14px;
  font-size: 0.8rem;
  border-radius: var(--radius-xs);
}

.btn-outline-cyan {
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 242, 254, 0.3);
}

.btn-outline-cyan:hover {
  background: var(--accent-cyan);
  color: #080C14;
  border-color: var(--accent-cyan);
}

.w-full {
  width: 100%;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding: 60px 0 80px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.system-indicator {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.2);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
}

.indicator-mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  font-weight: 600;
  letter-spacing: 1px;
}

.hero-wordmark {
  margin-bottom: 20px;
}

.brand-huge {
  font-family: var(--font-brand);
  font-size: 4.8rem;
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1;
  color: #FFFFFF;
  background: linear-gradient(180deg, #FFFFFF 30%, #94A3B8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-manifesto {
  font-size: 1.2rem;
  color: #CBD5E1;
  line-height: 1.7;
  max-width: 580px;
  margin-bottom: 36px;
  font-weight: 400;
}

.metrics-row {
  display: flex;
  align-items: center;
  gap: 20px;
  background: rgba(17, 24, 39, 0.5);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  margin-bottom: 36px;
  width: fit-content;
}

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

.metric-val {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.2;
}

.metric-lbl {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.metric-divider {
  color: rgba(255, 255, 255, 0.15);
  font-size: 1.2rem;
  font-weight: 300;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-canvas-box {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.canvas-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}

.canvas-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  font-weight: 600;
}

.canvas-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-emerald);
}

#topologyCanvas {
  width: 100%;
  height: 340px;
  display: block;
  border-radius: var(--radius-sm);
  background: rgba(8, 12, 20, 0.5);
}

.canvas-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 14px;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.mono-cyan {
  color: var(--accent-cyan);
  font-weight: 600;
}

/* ==========================================================================
   Cluster Sections & Cards
   ========================================================================== */
.cluster-section {
  padding: 80px 0;
  position: relative;
}

.section-head {
  margin-bottom: 44px;
}

.cluster-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.cluster-num {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--accent-cyan);
  background: var(--accent-cyan-subtle);
  border: 1px solid rgba(0, 242, 254, 0.25);
  padding: 4px 10px;
  border-radius: var(--radius-xs);
}

.cluster-title {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #FFFFFF;
}

.cluster-desc {
  font-size: 1.05rem;
  color: #CBD5E1;
  max-width: 820px;
  line-height: 1.65;
  margin-bottom: 24px;
}

.pipeline-flow-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(17, 24, 39, 0.5);
  border: 1px solid var(--border-subtle);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  backdrop-filter: blur(12px);
}

.flow-node {
  display: flex;
  flex-direction: column;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.flow-node.active {
  border-color: rgba(0, 242, 254, 0.4);
  background: rgba(0, 242, 254, 0.08);
  color: var(--accent-cyan);
}

.flow-sub {
  font-size: 0.68rem;
  font-weight: 400;
  color: var(--text-muted);
}

.flow-arrow {
  color: var(--text-dim);
  font-size: 1rem;
}

/* Flagship Card */
.flagship-card {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
  background: linear-gradient(135deg, rgba(20, 30, 48, 0.7) 0%, rgba(13, 20, 33, 0.6) 100%);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 36px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-card);
  margin-bottom: 32px;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.flagship-card:hover {
  border-color: rgba(0, 242, 254, 0.35);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.card-system-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.sys-code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--accent-cyan);
  background: var(--accent-cyan-subtle);
  border: 1px solid rgba(0, 242, 254, 0.25);
  padding: 4px 10px;
  border-radius: var(--radius-xs);
}

.sys-status {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.sys-status.live {
  background: rgba(0, 245, 160, 0.12);
  color: var(--accent-emerald);
  border: 1px solid rgba(0, 245, 160, 0.25);
}

.sys-status.rd {
  background: rgba(0, 242, 254, 0.12);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 242, 254, 0.25);
}

.sys-status.private {
  background: rgba(179, 102, 255, 0.12);
  color: var(--accent-violet);
  border: 1px solid rgba(179, 102, 255, 0.25);
}

.sys-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-amber);
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.2);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-weight: 700;
}

.card-name {
  font-size: 1.85rem;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.card-name:hover {
  color: var(--accent-cyan);
}

.card-tagline {
  font-size: 1rem;
  font-weight: 500;
  color: #93C5FD;
  margin-bottom: 16px;
}

.card-body-text {
  font-size: 0.98rem;
  color: #CBD5E1;
  line-height: 1.65;
  margin-bottom: 24px;
}

.spec-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 28px;
}

.spec-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.92rem;
  color: #E2E8F0;
}

.spec-item i {
  margin-top: 4px;
}

.text-cyan { color: var(--accent-cyan); }
.text-emerald { color: var(--accent-emerald); }
.text-violet { color: var(--accent-violet); }

.card-actions-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* Grids */
.system-grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.system-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.system-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(440px, 1fr));
  gap: 32px;
}

.precision-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.precision-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(0, 242, 254, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

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

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 6px;
  cursor: pointer;
  transition: color var(--transition-fast);
}

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

.card-compact-desc {
  font-size: 0.92rem;
  color: #CBD5E1;
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.card-footer-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
}

.mono-dim {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Image Frames */
.illustration-frame {
  width: 100%;
  height: 100%;
  min-height: 240px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(8, 12, 20, 0.8);
  border: 1px solid var(--border-card);
  position: relative;
}

.illustration-frame-sm {
  width: 100%;
  height: 200px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(8, 12, 20, 0.8);
  border: 1px solid var(--border-card);
  margin-bottom: 18px;
  position: relative;
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Always Visible & Distinct Carousel Styling
   ========================================================================== */
.carousel-container {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 190px;
  border-radius: inherit;
  overflow: hidden;
  user-select: none;
}

.carousel-slides {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.carousel-slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  position: relative;
}

.carousel-caption-chip {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(8, 12, 20, 0.88);
  border: 1px solid rgba(0, 242, 254, 0.35);
  backdrop-filter: blur(12px);
  padding: 5px 12px;
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: #FFFFFF;
  z-index: 15;
  display: flex;
  align-items: center;
  gap: 7px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.6);
  pointer-events: none;
}

.chip-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  display: inline-block;
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(13, 19, 31, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  color: #FFFFFF;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 20;
  font-size: 0.9rem;
  opacity: 0.95;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 15px rgba(0,0,0,0.5);
}

.carousel-btn.prev {
  left: 8px;
}

.carousel-btn.next {
  right: 8px;
}

.carousel-btn:hover {
  background: #00F2FE;
  color: #080C14;
  border-color: #00F2FE;
  opacity: 1;
  transform: translateY(-50%) scale(1.15);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.6);
}

.carousel-dots {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  z-index: 20;
  background: rgba(8, 12, 20, 0.8);
  padding: 4px 10px;
  border-radius: 9999px;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-block;
}

.carousel-dot:hover {
  background: rgba(255, 255, 255, 0.7);
}

.carousel-dot.active {
  width: 20px;
  border-radius: 4px;
  background: #00F2FE;
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.6);
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(4, 7, 12, 0.85);
  backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-backdrop.hidden {
  display: none;
}

.modal-card {
  background: linear-gradient(135deg, rgba(22, 32, 50, 0.95) 0%, rgba(13, 20, 33, 0.95) 100%);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 36px;
  width: 100%;
  max-width: 580px;
  position: relative;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.8), 0 0 30px rgba(0, 242, 254, 0.15);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-card-lg {
  max-width: 820px;
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  transform: rotate(90deg);
}

.modal-header {
  margin-bottom: 24px;
}

.modal-title {
  font-size: 1.65rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-top: 8px;
  margin-bottom: 4px;
}

.modal-subtitle {
  font-size: 0.95rem;
  color: #93C5FD;
}

.dossier-top-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.cluster-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.detail-section {
  margin-bottom: 20px;
}

.detail-h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.detail-p {
  font-size: 0.95rem;
  color: #CBD5E1;
  line-height: 1.65;
}

.detail-grid-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  background: rgba(8, 12, 20, 0.5);
  border: 1px solid var(--border-subtle);
  padding: 16px;
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
}

.meta-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.meta-val {
  font-size: 0.9rem;
  font-weight: 600;
  color: #FFFFFF;
}

.request-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: #E2E8F0;
}

.form-group input,
.form-group textarea {
  background: rgba(8, 12, 20, 0.7);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: #FFFFFF;
  font-family: var(--font-main);
  font-size: 0.92rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 15px var(--accent-cyan-subtle);
}

.form-alt-contact {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-top: 14px;
}

.form-alt-contact a {
  color: #4C75A3;
  font-weight: 600;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.form-alt-contact a:hover {
  color: #FFFFFF;
  text-decoration: underline;
}

.form-success {
  text-align: center;
  padding: 30px 20px;
}

.form-success i {
  font-size: 3rem;
  margin-bottom: 16px;
}

.form-success h4 {
  font-size: 1.35rem;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.form-success p {
  font-size: 0.92rem;
  color: #CBD5E1;
}

.precision-footer {
  border-top: 1px solid var(--border-subtle);
  background: rgba(6, 9, 15, 0.95);
  padding: 60px 0 40px;
  margin-top: 60px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
}

.footer-brand-p {
  font-size: 0.92rem;
  color: var(--text-muted);
  max-width: 440px;
  margin-top: 14px;
  line-height: 1.6;
}

.footer-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0.5px;
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color var(--transition-fast);
}

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

.hidden {
  display: none !important;
}

/* Category Blocks — inside Hero */
.hero-section .category-grid {
  margin-top: 40px;
  padding-top: 36px;
  border-top: 1px solid var(--border-subtle);
}

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

.category-block {
  background: linear-gradient(145deg, rgba(17, 24, 39, 0.75) 0%, rgba(10, 16, 28, 0.85) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 36px 28px 32px;
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  min-height: 280px;
}

.category-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cat-color) 0%, transparent 100%);
  opacity: 0.6;
}

.category-block:hover {
  border-color: var(--cat-color);
  transform: translateY(-4px);
  box-shadow: 0 20px 50px -15px rgba(0, 0, 0, 0.6), 0 0 30px var(--cat-glow);
}

.category-block--crypto {
  --cat-color: var(--accent-cyan);
  --cat-glow: var(--accent-cyan-glow);
}

.category-block--edu {
  --cat-color: var(--accent-emerald);
  --cat-glow: var(--accent-emerald-glow);
}

.category-block--dev {
  --cat-color: var(--accent-violet);
  --cat-glow: var(--accent-violet-glow);
}

.category-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 20px;
  background: var(--cat-glow);
  color: var(--cat-color);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.category-title {
  font-family: var(--font-brand);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  letter-spacing: 0.3px;
}

.category-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.category-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--cat-color);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 3px 8px;
  border-radius: var(--radius-full);
  letter-spacing: 0.3px;
}

.category-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.category-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
}

.category-arrow {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  color: var(--cat-color);
  font-size: 0.8rem;
  transition: all var(--transition-fast);
}

.category-block:hover .category-arrow {
  background: var(--cat-glow);
  transform: translateX(3px);
}

@media (max-width: 1024px) {
  .category-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .category-block {
    min-height: auto;
    padding: 28px 24px;
  }
}

/* Highlighted / Available Projects */
.precision-card.highlighted,
.flagship-card.highlighted {
  border: 1.5px solid rgba(16, 185, 129, 0.5);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.15), var(--shadow-card);
}

.precision-card.highlighted:hover,
.flagship-card.highlighted:hover {
  border-color: rgba(16, 185, 129, 0.7);
  box-shadow: 0 0 30px rgba(16, 185, 129, 0.25), var(--shadow-card-hover);
}

.highlighted-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #10B981;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  z-index: 5;
  pointer-events: none;
}

.flagship-card.highlighted .highlighted-badge {
  top: 20px;
  right: 20px;
  font-size: 0.72rem;
  padding: 5px 12px;
}

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  
  .flagship-card {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .brand-huge {
    font-size: 3.5rem;
  }

  .system-grid-3,
  .system-grid-2 {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}