:root {
  color-scheme: dark;
  --bg: #071017;
  --bg-soft: #0d1822;
  --panel: rgba(16, 30, 42, 0.78);
  --panel-strong: #111f2b;
  --text: #f5f7fb;
  --muted: #aab7c4;
  --line: rgba(255, 255, 255, 0.11);
  --accent: #43d6b5;
  --accent-2: #7aa7ff;
  --warning: #f5b85d;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
  --radius: 8px;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 18% 12%, rgba(67, 214, 181, 0.14), transparent 32rem),
    radial-gradient(circle at 88% 8%, rgba(122, 167, 255, 0.14), transparent 30rem),
    linear-gradient(180deg, #071017 0%, #08131c 48%, #071017 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

body::before {
  position: fixed;
  inset: 0;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.6), transparent 70%);
}

a {
  color: inherit;
  text-decoration: none;
}

p {
  margin: 0;
  color: var(--muted);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.05;
  letter-spacing: 0;
}

h1 {
  max-width: 790px;
  font-size: clamp(3rem, 8vw, 6.6rem);
}

h2 {
  max-width: 760px;
  font-size: clamp(2rem, 5vw, 4rem);
}

h3 {
  font-size: 1.05rem;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  background: var(--text);
  color: #071017;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0;
  transition: padding 180ms ease, background 180ms ease;
}

.site-header.is-scrolled {
  padding: 10px 0;
}

.site-header.is-scrolled::before,
.site-header.compact::before {
  position: absolute;
  inset: 6px -12px;
  z-index: -1;
  content: "";
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(7, 16, 23, 0.82);
  box-shadow: 0 14px 60px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 720;
  letter-spacing: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(67, 214, 181, 0.95), rgba(122, 167, 255, 0.85)),
    #102234;
  box-shadow: inset 0 0 0 7px rgba(7, 16, 23, 0.62);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  color: var(--muted);
  font-size: 0.94rem;
}

.site-nav a {
  transition: color 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--text);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 3rem;
  align-items: end;
  width: min(var(--max), calc(100% - 32px));
  min-height: calc(100vh - 86px);
  margin: 0 auto;
  padding: 8vh 0 10vh;
}

.hero-grid {
  position: absolute;
  inset: 8% 0 8% auto;
  width: min(46vw, 560px);
  border: 1px solid var(--line);
  opacity: 0.42;
  transform: skewY(-8deg);
}

.hero-grid span {
  position: absolute;
  background: var(--line);
}

.hero-grid span:nth-child(1),
.hero-grid span:nth-child(2),
.hero-grid span:nth-child(3),
.hero-grid span:nth-child(4) {
  width: 1px;
  height: 100%;
}

.hero-grid span:nth-child(1) { left: 20%; }
.hero-grid span:nth-child(2) { left: 40%; }
.hero-grid span:nth-child(3) { left: 60%; }
.hero-grid span:nth-child(4) { left: 80%; }

.hero-grid span:nth-child(5),
.hero-grid span:nth-child(6),
.hero-grid span:nth-child(7),
.hero-grid span:nth-child(8) {
  width: 100%;
  height: 1px;
}

.hero-grid span:nth-child(5) { top: 20%; }
.hero-grid span:nth-child(6) { top: 40%; }
.hero-grid span:nth-child(7) { top: 60%; }
.hero-grid span:nth-child(8) { top: 80%; }

.hero-content {
  position: relative;
  z-index: 1;
}

.eyebrow {
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-copy {
  max-width: 640px;
  margin-top: 1.4rem;
  font-size: 1.15rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 700;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  border-color: rgba(67, 214, 181, 0.54);
  background: linear-gradient(135deg, #43d6b5, #7aa7ff);
  color: #071017;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.04);
}

.hero-panel {
  position: relative;
  z-index: 1;
  min-height: 430px;
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(17, 31, 43, 0.92), rgba(13, 24, 34, 0.72));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-top,
.metric-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.panel-top {
  margin-bottom: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.status-dot {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(67, 214, 181, 0.12);
}

.metric-row {
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
}

.metric-row strong {
  color: var(--text);
}

.signal-map {
  position: absolute;
  inset: auto 1.1rem 1.1rem;
  height: 190px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
}

.node {
  position: absolute;
  z-index: 2;
  width: 16px;
  height: 16px;
  border: 3px solid #071017;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 24px rgba(67, 214, 181, 0.5);
}

.node-a { left: 18%; top: 60%; }
.node-b { left: 38%; top: 28%; background: var(--accent-2); }
.node-c { left: 66%; top: 44%; background: var(--warning); }
.node-d { left: 80%; top: 72%; }

.line {
  position: absolute;
  height: 2px;
  transform-origin: left center;
  background: linear-gradient(90deg, rgba(67, 214, 181, 0.05), rgba(67, 214, 181, 0.85));
}

.line-a { left: 22%; top: 61%; width: 120px; transform: rotate(-32deg); }
.line-b { left: 41%; top: 31%; width: 132px; transform: rotate(18deg); }
.line-c { left: 68%; top: 47%; width: 86px; transform: rotate(34deg); }

.section {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 5.8rem 0;
}

.section-heading {
  margin-bottom: 2rem;
}

.section-heading p:not(.eyebrow) {
  max-width: 620px;
  margin-top: 1rem;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  font-size: 1.06rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.service-card {
  min-height: 230px;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.035);
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(67, 214, 181, 0.34);
  background: rgba(255, 255, 255, 0.055);
}

.service-card h3 {
  margin: 1rem 0 0.65rem;
}

.icon {
  display: inline-block;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(67, 214, 181, 0.22), rgba(122, 167, 255, 0.18));
  position: relative;
}

.icon::before,
.icon::after {
  position: absolute;
  content: "";
  border-radius: 999px;
  background: var(--accent);
}

.icon::before {
  left: 11px;
  top: 11px;
  width: 16px;
  height: 16px;
}

.icon::after {
  right: 8px;
  bottom: 8px;
  width: 7px;
  height: 7px;
  background: var(--accent-2);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1fr);
  gap: 3rem;
  align-items: start;
}

.stack-diagram {
  display: grid;
  gap: 0.75rem;
}

.stack-diagram div {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 0 1rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.stack-diagram span {
  grid-row: span 2;
  color: var(--accent);
  font-weight: 800;
}

.stack-diagram em {
  color: var(--muted);
  font-style: normal;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.feature-list div {
  min-height: 210px;
  padding: 1.2rem;
  background: rgba(255, 255, 255, 0.035);
}

.feature-list div + div {
  border-left: 1px solid var(--line);
}

.feature-list h3 {
  margin-bottom: 0.8rem;
}

.contact-section {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 5.8rem 0 7rem;
}

.contact-box {
  display: grid;
  gap: 1rem;
  justify-items: start;
  padding: clamp(1.25rem, 5vw, 3rem);
  border: 1px solid rgba(67, 214, 181, 0.22);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(67, 214, 181, 0.12), rgba(122, 167, 255, 0.08)),
    var(--panel-strong);
  box-shadow: var(--shadow);
}

.contact-box p:not(.eyebrow) {
  max-width: 620px;
}

.site-footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
}

.footer-brand {
  margin-bottom: 0.6rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1rem;
  color: var(--muted);
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--text);
}

.policy,
.not-found {
  width: min(860px, calc(100% - 32px));
  margin: 0 auto;
  padding: 7rem 0;
}

.policy h1,
.not-found h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
}

.policy section {
  padding: 2rem 0;
  border-top: 1px solid var(--line);
}

.policy h2 {
  margin-bottom: 0.8rem;
  font-size: 1.4rem;
}

.policy a {
  color: var(--accent);
}

.updated {
  margin: 1rem 0 3rem;
}

.not-found {
  min-height: 100vh;
  display: grid;
  align-content: center;
  justify-items: start;
  gap: 1rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 920px) {
  .hero,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 4rem;
  }

  .hero-panel {
    min-height: 360px;
  }

  .card-grid,
  .feature-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-list div:nth-child(3) {
    border-left: 0;
  }

  .feature-list div:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 720px) {
  .site-header {
    width: calc(100% - 24px);
  }

  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 64px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0.8rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(7, 16, 23, 0.96);
    box-shadow: var(--shadow);
  }

  .site-nav.visible,
  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    width: 100%;
    padding: 0.75rem;
  }

  .hero,
  .section,
  .contact-section,
  .site-footer {
    width: calc(100% - 24px);
  }

  .hero-grid {
    display: none;
  }

  .hero-copy {
    font-size: 1rem;
  }

  .two-column,
  .card-grid,
  .feature-list {
    grid-template-columns: 1fr;
  }

  .feature-list div + div,
  .feature-list div:nth-child(3) {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .site-footer {
    flex-direction: column;
  }

  .site-footer nav {
    justify-content: flex-start;
  }
}

@media (max-width: 460px) {
  h1 {
    font-size: 2.7rem;
  }

  h2 {
    font-size: 2rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .signal-map {
    height: 150px;
  }
}