/* ============================================================
   Fabric Networks — style.css
   ============================================================ */

/* ── Custom Properties ─────────────────────────────────────── */
:root {
  --bg-base:       #080c14;
  --bg-surface:    #0d1420;
  --bg-elevated:   #121b2e;
  --bg-card:       #0f1929;

  --accent:        #3b82f6;
  --accent-light:  #60a5fa;
  --accent-dim:    rgba(59, 130, 246, 0.15);
  --accent-glow:   rgba(59, 130, 246, 0.35);

  --cyan:          #06b6d4;
  --cyan-dim:      rgba(6, 182, 212, 0.12);

  --text-primary:  #f1f5f9;
  --text-secondary:#94a3b8;
  --text-muted:    #475569;

  --border:        rgba(255, 255, 255, 0.06);
  --border-active: rgba(59, 130, 246, 0.4);

  --radius-sm:     8px;
  --radius-md:     12px;
  --radius-lg:     20px;
  --radius-xl:     28px;

  --nav-h:         72px;
  --transition:    0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

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

.gradient-text {
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--cyan) 60%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mono-text {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.8rem;
  color: var(--accent-light);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-light);
  background: var(--accent-dim);
  border: 1px solid var(--border-active);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 24px var(--accent-glow);
}
.btn-primary:hover {
  background: var(--accent-light);
  box-shadow: 0 0 36px var(--accent-glow);
  transform: translateY(-1px);
}

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

.btn-full { width: 100%; justify-content: center; }

/* ── Navbar ─────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(8, 12, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.logo-mark {
  width: 36px;
  height: 36px;
  color: var(--accent-light);
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.logo-cn {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.logo-en {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  line-height: 1;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links li a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-links li a:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.btn-nav {
  background: var(--accent) !important;
  color: #fff !important;
  padding: 8px 20px !important;
  border-radius: var(--radius-sm) !important;
}

.btn-nav:hover {
  background: var(--accent-light) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + 60px) 24px 120px;
  overflow: hidden;
}

#networkCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.55;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 40%, rgba(59, 130, 246, 0.12) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 80% 70%, rgba(6, 182, 212, 0.07) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 780px;
  animation: fadeUp 0.8s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan);
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 24px;
}

.title-line { display: block; }

.hero-desc {
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 40px;
  backdrop-filter: blur(10px);
}

.stat-item {
  text-align: center;
  padding: 0 32px;
}

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-light);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.stat-unit {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--accent-light);
}

.stat-label {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border);
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollLine 2s ease infinite;
}

@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ── Services ───────────────────────────────────────────────── */
.services {
  padding: 120px 0;
  position: relative;
}

.services::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  overflow: hidden;
}

.service-card:hover {
  border-color: var(--border-active);
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 40px var(--accent-dim);
}

.service-card.featured {
  border-color: rgba(59, 130, 246, 0.3);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, var(--bg-card) 60%);
}

.card-glow {
  position: absolute;
  top: -80px;
  right: -80px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.service-card:hover .card-glow { opacity: 1; }

.card-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent-light);
  background: var(--accent-dim);
  border: 1px solid var(--border-active);
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.card-icon {
  width: 48px;
  height: 48px;
  color: var(--accent-light);
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.service-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
}

.card-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.card-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.card-features li::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-light);
  flex-shrink: 0;
}

.card-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-light);
  transition: gap var(--transition);
}

.card-link:hover { opacity: 0.8; }

/* ── Capabilities ───────────────────────────────────────────── */
.capabilities {
  padding: 120px 0;
  background: var(--bg-surface);
  position: relative;
}

.capabilities::before,
.capabilities::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}
.capabilities::before { top: 0; }
.capabilities::after  { bottom: 0; }

.tech-showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}

.tech-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.tech-tab {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 100px;
  transition: var(--transition);
}

.tech-tab:hover {
  color: var(--text-secondary);
  border-color: rgba(255,255,255,0.12);
}

.tech-tab.active {
  color: var(--accent-light);
  background: var(--accent-dim);
  border-color: var(--border-active);
}

.tech-panel { display: none; animation: fadeIn 0.3s ease; }
.tech-panel.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tech-panel h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.tech-panel p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tags span {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 5px 14px;
  border-radius: 100px;
}

/* Tech visual */
.tech-visual {
  position: relative;
  width: 300px;
  height: 300px;
  margin: 0 auto;
}

.vis-lines {
  position: absolute;
  inset: 0;
  color: var(--accent-light);
}

.vis-node {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  transform: translate(-50%, -50%);
}

.vis-node span { white-space: nowrap; }

.vis-node.central {
  top: 50%; left: 50%;
  width: 60px; height: 60px;
  color: var(--accent-light);
}

.vis-node.n1 { top: 13%; left: 50%; }
.vis-node.n2 { top: 30%; left: 82%; }
.vis-node.n3 { top: 70%; left: 82%; }
.vis-node.n4 { top: 87%; left: 50%; }
.vis-node.n5 { top: 70%; left: 18%; }
.vis-node.n6 { top: 30%; left: 18%; }

.vis-node:not(.central) {
  width: 40px;
  height: 40px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-active);
  border-radius: 50%;
  justify-content: center;
  animation: nodePulse 3s ease infinite;
}

.vis-node.n1 { animation-delay: 0s; }
.vis-node.n2 { animation-delay: 0.5s; }
.vis-node.n3 { animation-delay: 1s; }
.vis-node.n4 { animation-delay: 1.5s; }
.vis-node.n5 { animation-delay: 2s; }
.vis-node.n6 { animation-delay: 2.5s; }

@keyframes nodePulse {
  0%, 100% { border-color: rgba(59, 130, 246, 0.3); box-shadow: none; }
  50%       { border-color: var(--accent-light); box-shadow: 0 0 12px var(--accent-glow); }
}

/* Metrics bar */
.metrics-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.metric {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 28px 32px;
  background: var(--bg-elevated);
  transition: background var(--transition);
}

.metric:hover { background: var(--bg-card); }

.metric-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.metric-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.metric-val {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.metric-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ── About ──────────────────────────────────────────────────── */
.about {
  padding: 120px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-left .section-tag { margin-bottom: 12px; }

.about-left .section-title {
  text-align: left;
  margin-bottom: 20px;
}

.about-left p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.about-values {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}

.value-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.value-icon {
  color: var(--accent-light);
  font-size: 0.6rem;
  margin-top: 6px;
  flex-shrink: 0;
}

.value-item strong {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.value-item span {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* About card stack */
.about-card-stack { position: relative; }

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.card-bg { padding: 0; }

.about-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
}

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

.card-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}

.card-dots span:nth-child(1) { background: #ef4444; }
.card-dots span:nth-child(2) { background: #f59e0b; }
.card-dots span:nth-child(3) { background: #22c55e; }

.profile-items {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.profile-bar {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bar-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.bar-track {
  height: 6px;
  background: rgba(255,255,255,0.06);
  border-radius: 100px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  border-radius: 100px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.bar-fill.animated { width: var(--w); }

.card-float {
  position: absolute;
  bottom: -24px;
  right: -24px;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--bg-elevated);
  border-color: var(--border-active);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.float-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.float-num {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--accent-light);
  letter-spacing: -0.02em;
}

.float-text {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.float-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* ── Contact ────────────────────────────────────────────────── */
.contact {
  padding: 120px 0;
  background: var(--bg-surface);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 60px;
  align-items: start;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 28px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-dim);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-light);
  flex-shrink: 0;
}

.contact-icon svg { width: 20px; height: 20px; }

.contact-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent-light);
}

.contact-cta {
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-top: 16px;
}

.contact-cta p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

/* Form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

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

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 0.9375rem;
  color: var(--text-primary);
  font-family: inherit;
  transition: border-color var(--transition);
  outline: none;
  width: 100%;
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-group select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%2394a3b8' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form-group select option {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.form-group textarea { resize: vertical; min-height: 110px; }

.form-note {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 12px;
  line-height: 1.5;
}

/* ── Footer ─────────────────────────────────────────────────── */
.footer {
  background: var(--bg-base);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-bottom: 48px;
}

.footer-tagline {
  font-size: 0.9375rem;
  color: var(--text-muted);
  margin-top: 16px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-showcase { gap: 40px; }
  .metrics-bar { grid-template-columns: repeat(2, 1fr); }
  .about-grid { gap: 48px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: var(--nav-h); left: 0; right: 0; background: rgba(8,12,20,0.97); backdrop-filter: blur(20px); padding: 16px; border-bottom: 1px solid var(--border); gap: 4px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .services-grid { grid-template-columns: 1fr; }
  .tech-showcase { grid-template-columns: 1fr; }
  .tech-right { display: none; }
  .hero-stats { flex-direction: column; padding: 24px; gap: 16px; }
  .stat-divider { width: 48px; height: 1px; }
  .about-grid { grid-template-columns: 1fr; }
  .card-float { position: static; margin-top: 16px; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .metrics-bar { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .metrics-bar { grid-template-columns: 1fr; }
  .hero-title { font-size: 2rem; }
  .hero-actions { flex-direction: column; align-items: center; }
}

/* ── Scroll animations ──────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }