:root {
  --bg: #0e1218;
  --bg-elevated: #151b24;
  --surface: #1a222e;
  --surface-2: #212b3a;
  --border: #2c384a;
  --border-hover: #3d4f66;
  --text: #e8eef6;
  --text-secondary: #9aabbf;
  --accent: #3dd6c6;
  --on-accent: #0a1214;
  --signal: #e8a54b;
  --header-bg: rgba(14, 18, 24, 0.92);
  --grid-line: rgba(61, 214, 198, 0.06);
  --max-width: 1120px;
  --section-pad: 88px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes header-in {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse-line {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.85; }
}
@keyframes layer-shift {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

a { color: var(--accent); }
a:hover { color: #6ee7db; }
.mono {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 14px 24px;
  animation: header-in 0.55s var(--ease-out) forwards;
}
.header-inner {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.logo {
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: 0.04em;
  color: var(--text);
  text-decoration: none;
}
.logo span { color: var(--accent); }
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  align-items: center;
}
.nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 0.2s ease;
}
.nav a:hover, .nav a.is-active { color: var(--text); }
.nav .nav-contact {
  padding: 8px 14px;
  border: 1px solid var(--border-hover);
  border-radius: 2px;
  color: var(--text);
  background: var(--surface);
}
.nav .nav-contact:hover { border-color: var(--accent); color: var(--accent); }
.mobile-menu { display: none; }
@media (max-width: 860px) {
  .header .nav { display: none; }
  .mobile-menu { display: block; }
  .mobile-menu summary {
    padding: 8px 14px;
    border: 1px solid var(--border);
    border-radius: 2px;
    font-size: 0.875rem;
    cursor: pointer;
    list-style: none;
  }
  .mobile-menu summary::-webkit-details-marker { display: none; }
  .mobile-nav {
    position: absolute;
    top: calc(100% + 12px);
    left: 0; right: 0;
    display: grid;
    gap: 2px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--surface);
  }
  .mobile-nav a {
    display: block;
    padding: 10px 12px;
    color: var(--text);
    text-decoration: none;
    font-size: 0.9375rem;
  }
  .mobile-nav a:hover { background: var(--surface-2); }
}

.hero {
  position: relative;
  min-height: min(88vh, 760px);
  display: flex;
  align-items: center;
  padding: 72px 24px 56px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(180deg, transparent 60%, var(--bg) 100%),
    radial-gradient(ellipse 80% 60% at 78% 40%, rgba(61, 214, 198, 0.12), transparent 55%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(232, 165, 75, 0.08), transparent 50%),
    repeating-linear-gradient(0deg, transparent, transparent 47px, var(--grid-line) 47px, var(--grid-line) 48px),
    repeating-linear-gradient(90deg, transparent, transparent 47px, var(--grid-line) 47px, var(--grid-line) 48px),
    var(--bg);
}
.hero-inner {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}
.hero.hub .hero-inner { max-width: 920px; }
.hero .brand-mark {
  font-size: clamp(2.75rem, 6vw, 4.25rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 0 0 20px;
  color: var(--text);
  animation: fade-up 0.7s var(--ease-out) both;
}
.hero .brand-mark span { color: var(--accent); }
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.02em;
  max-width: 28ch;
  animation: fade-up 0.7s var(--ease-out) 0.06s both;
}
.hero .lead {
  margin: 0 0 32px;
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 38rem;
  line-height: 1.6;
  animation: fade-up 0.7s var(--ease-out) 0.12s both;
}
.hero-split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}
@media (max-width: 860px) {
  .hero { min-height: auto; padding: 56px 24px 48px; }
  .hero-split { grid-template-columns: 1fr; gap: 36px; }
}

.hero-cta, .page-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 2px;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s var(--ease-out);
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  border: 1px solid var(--accent);
}
.btn-primary:hover { background: #6ee7db; border-color: #6ee7db; color: var(--on-accent); }
.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-hover);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-signal {
  background: var(--signal);
  color: #1a1208;
  border: 1px solid var(--signal);
}
.btn-signal:hover { background: #f0c078; border-color: #f0c078; color: #1a1208; }

.entry-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  animation: fade-up 0.7s var(--ease-out) 0.18s both;
}
.entry {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 28px 24px;
  text-decoration: none;
  color: inherit;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 2px;
  transition: border-color 0.2s ease, transform 0.25s var(--ease-out), background 0.2s ease;
}
.entry:hover {
  transform: translateY(-2px);
  background: var(--surface);
}
.entry.plan { border-top: 3px solid var(--signal); }
.entry.plan:hover { border-color: rgba(232, 165, 75, 0.55); }
.entry.corp { border-top: 3px solid var(--accent); }
.entry.corp:hover { border-color: rgba(61, 214, 198, 0.55); }
.entry .tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.entry h2 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
}
.entry p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  flex: 1;
}
.entry .go {
  margin-top: 8px;
  font-weight: 500;
  font-size: 0.9375rem;
}
.entry.plan .go { color: var(--signal); }
.entry.corp .go { color: var(--accent); }
@media (max-width: 700px) {
  .entry-grid { grid-template-columns: 1fr; }
}

.hero-visual {
  position: relative;
  height: 300px;
  animation: fade-up 0.8s var(--ease-out) 0.15s both;
}
.stack-layer {
  position: absolute;
  left: 8%;
  right: 8%;
  height: 68px;
  border: 1px solid var(--border-hover);
  background: linear-gradient(135deg, var(--surface), var(--surface-2));
  border-radius: 2px;
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  animation: layer-shift 5.5s ease-in-out infinite;
}
.stack-layer:nth-child(1) { top: 18px; z-index: 3; border-color: rgba(61, 214, 198, 0.45); }
.stack-layer:nth-child(2) { top: 104px; z-index: 2; left: 14%; right: 4%; animation-delay: 0.4s; }
.stack-layer:nth-child(3) { top: 190px; z-index: 1; left: 4%; right: 14%; animation-delay: 0.8s; border-color: rgba(232, 165, 75, 0.4); }
.stack-layer .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.stack-layer .value { font-size: 0.95rem; font-weight: 500; }
section {
  padding: var(--section-pad) 24px;
  border-bottom: 1px solid var(--border);
}
.section-inner { max-width: var(--max-width); margin: 0 auto; }
.section-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 12px;
}
.section-label.signal { color: var(--signal); }
.section-title {
  margin: 0 0 12px;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.2;
  max-width: 22ch;
}
.section-lead {
  margin: 0 0 40px;
  color: var(--text-secondary);
  max-width: 40rem;
  font-size: 1.0625rem;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

.feature-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  max-width: 40rem;
}
.feature-list li {
  position: relative;
  padding: 14px 16px 14px 28px;
  background: var(--surface);
  border: 1px solid var(--border);
}
.feature-list li::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 1.15em;
  width: 6px;
  height: 6px;
  background: var(--accent);
}
.feature-list.signal li::before { background: var(--signal); }

.corp-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.corp-item {
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
}
.corp-item h3 { margin: 0 0 8px; font-size: 1.05rem; font-weight: 600; }
.corp-item p { margin: 0; color: var(--text-secondary); font-size: 0.9375rem; }
@media (max-width: 700px) { .corp-grid { grid-template-columns: 1fr; } }

.method-flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  counter-reset: step;
}
.method-step {
  padding: 20px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  min-height: 140px;
}
.method-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 10px;
}
.method-step.signal::before { color: var(--signal); }
.method-step h3 { margin: 0 0 8px; font-size: 0.95rem; font-weight: 600; }
.method-step p { margin: 0; font-size: 0.8125rem; color: var(--text-secondary); line-height: 1.45; }
@media (max-width: 960px) { .method-flow { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .method-flow { grid-template-columns: 1fr; } }

.outcomes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.outcome {
  padding: 20px;
  border-left: 2px solid var(--signal);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 2px solid var(--signal);
}
.outcome.accent { border-left-color: var(--accent); }
.outcome h3 { margin: 0 0 8px; font-size: 1rem; }
.outcome p { margin: 0; color: var(--text-secondary); font-size: 0.9rem; }
@media (max-width: 800px) { .outcomes { grid-template-columns: 1fr; } }

.demo-panel {
  padding: 28px;
  background: linear-gradient(145deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border-hover);
  max-width: 36rem;
}
.demo-panel h3 { margin: 0 0 10px; font-size: 1.2rem; }
.demo-panel p { margin: 0 0 20px; color: var(--text-secondary); }

.engage-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.engage-step {
  padding: 24px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}
.engage-step .num {
  font-family: 'IBM Plex Mono', monospace;
  color: var(--accent);
  font-size: 0.8rem;
  margin-bottom: 10px;
  display: block;
}
.engage-step h3 { margin: 0 0 8px; font-size: 1.05rem; }
.engage-step p { margin: 0; color: var(--text-secondary); font-size: 0.9rem; }
@media (max-width: 700px) { .engage-steps { grid-template-columns: 1fr; } }

.contact-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: end;
}
.contact-block p { color: var(--text-secondary); max-width: 32rem; }
.contact-email {
  font-size: 1.35rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--text);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 2px;
}
.contact-email:hover { color: var(--accent); }
@media (max-width: 700px) { .contact-block { grid-template-columns: 1fr; gap: 24px; } }

.hub-contact {
  padding: 56px 24px 72px;
  border-bottom: none;
}
.hub-contact .section-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
}

.footer {
  padding: 40px 24px 48px;
  background: #0a0d12;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
}
.footer-mark {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}
.footer-mark em { font-style: normal; color: var(--accent); }
.footer-copy { font-size: 0.8125rem; color: var(--text-secondary); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}