:root {
  --bg: #07110f;
  --bg-soft: #0d1d19;
  --surface: rgba(246, 250, 247, 0.08);
  --surface-strong: rgba(246, 250, 247, 0.14);
  --text: #f3f7f1;
  --muted: #b8c8bf;
  --line: rgba(243, 247, 241, 0.16);
  --accent: #42e6a4;
  --accent-2: #64b5ff;
  --accent-3: #f4c76b;
  --danger: #ff7f72;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 12%, rgba(66, 230, 164, 0.15), transparent 28rem),
    radial-gradient(circle at 80% 8%, rgba(100, 181, 255, 0.12), transparent 32rem),
    linear-gradient(180deg, #07110f 0%, #0a1513 46%, #101715 100%);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(66, 230, 164, 0.72);
  outline-offset: 3px;
}

ul {
  padding-left: 1.2rem;
  margin: 0;
}

li + li {
  margin-top: 0.45rem;
}

.network-canvas {
  position: fixed;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  opacity: 0.72;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 50;
  padding: 10px 14px;
  border-radius: 8px;
  color: #07110f;
  background: var(--accent);
  font-weight: 800;
  transform: translateY(-140%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  top: 16px;
  left: 50%;
  z-index: 20;
  display: flex;
  width: min(calc(100% - 32px), var(--max));
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 12px 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(7, 17, 15, 0.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  transform: translateX(-50%);
  transition: border-color 180ms ease, background 180ms ease;
}

.site-header.is-scrolled {
  border-color: rgba(66, 230, 164, 0.25);
  background: rgba(7, 17, 15, 0.9);
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(66, 230, 164, 0.48);
  border-radius: 8px;
  color: #07110f;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-size: 0.86rem;
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
  white-space: nowrap;
}

.brand strong {
  font-size: 0.96rem;
}

.brand small {
  color: var(--muted);
  font-size: 0.78rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  min-height: 42px;
  padding: 11px 11px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 600;
  transition: color 180ms ease, background 180ms ease;
}

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

.site-nav .nav-cta {
  color: #07110f;
  background: var(--accent);
}

.site-nav .nav-cta:hover,
.site-nav .nav-cta:focus-visible {
  color: #07110f;
  background: #72efbd;
}

.nav-toggle {
  display: none;
}

.hero {
  display: grid;
  min-height: 100vh;
  width: min(calc(100% - 32px), var(--max));
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
  align-items: center;
  gap: 48px;
  margin: 0 auto;
  padding: 132px 0 72px;
}

.hero-content {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 22px;
  font-size: clamp(3rem, 9vw, 6.9rem);
  line-height: 0.92;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 5vw, 4.2rem);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.18rem;
  letter-spacing: 0;
}

.hero-copy,
.section-heading p,
.contact-content p {
  max-width: 680px;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 13px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

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

.button.primary {
  color: #07110f;
  background: var(--accent);
}

.button.secondary {
  border-color: var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.hero-panel {
  justify-self: end;
  width: min(100%, 460px);
}

.terminal-card,
.feature-card,
.level-card,
.service-card,
.method-card,
.faq-item,
.reference-board {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.055));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.terminal-card {
  overflow: hidden;
}

.terminal-top {
  display: flex;
  gap: 8px;
  padding: 14px;
  border-bottom: 1px solid var(--line);
}

.terminal-top span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--danger);
}

.terminal-top span:nth-child(2) {
  background: var(--accent-3);
}

.terminal-top span:nth-child(3) {
  background: var(--accent);
}

.terminal-lines {
  padding: 24px;
  color: #dffbea;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.92rem;
}

.terminal-lines p {
  margin-bottom: 14px;
}

.terminal-lines span {
  color: var(--accent);
}

.terminal-lines .ok::before {
  color: var(--accent);
  content: "ok ";
}

.intro-strip,
.section,
.contact-section,
.site-footer {
  width: min(calc(100% - 32px), var(--max));
  margin-right: auto;
  margin-left: auto;
}

.intro-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.strip-item {
  padding: 24px;
  background: rgba(13, 29, 25, 0.86);
}

.strip-item strong,
.strip-item span {
  display: block;
}

.strip-item strong {
  margin-bottom: 6px;
  font-size: 1.02rem;
}

.strip-item span {
  color: var(--muted);
}

.section {
  padding: 110px 0 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-card,
.service-card,
.method-card,
.faq-item,
.level-card {
  padding: 24px;
}

.feature-card {
  min-height: 270px;
}

.feature-card p,
.service-card p,
.method-card p,
.faq-item p,
.level-card li,
.reference-board p {
  color: var(--muted);
}

.card-index {
  display: inline-block;
  margin-bottom: 42px;
  color: var(--accent-2);
  font-size: 0.85rem;
  font-weight: 800;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(0, 1fr);
  gap: 48px;
  align-items: start;
}

.sticky-heading {
  position: sticky;
  top: 118px;
}

.timeline {
  display: grid;
  gap: 18px;
}

.level-card {
  position: relative;
  overflow: hidden;
}

.level-card::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  content: "";
  background: linear-gradient(var(--accent), var(--accent-2));
}

.level-badge {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  margin-bottom: 18px;
  padding: 8px 12px;
  border: 1px solid rgba(66, 230, 164, 0.28);
  border-radius: 8px;
  color: var(--accent);
  background: rgba(66, 230, 164, 0.08);
  font-size: 0.82rem;
  font-weight: 800;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.service-card {
  min-height: 210px;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.method-card {
  min-height: 230px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-item {
  background: rgba(255, 255, 255, 0.055);
}

.faq-item h3 {
  font-size: 1.05rem;
}

.references-section {
  padding-bottom: 0;
}

.reference-board {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.3fr);
  gap: 24px;
  padding: 28px;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-cloud span {
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  font-size: 0.92rem;
  font-weight: 700;
}

.contact-section {
  padding: 110px 0 70px;
}

.contact-content {
  min-height: 390px;
  padding: clamp(28px, 7vw, 70px);
  border: 1px solid rgba(66, 230, 164, 0.22);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(66, 230, 164, 0.17), transparent 42%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.055));
  box-shadow: var(--shadow);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 26px 0 38px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer p {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px;
}

.site-footer a {
  color: var(--text);
  font-weight: 700;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms ease, transform 600ms ease;
}

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

@media (max-width: 980px) {
  .site-header {
    align-items: center;
  }

  .nav-toggle {
    display: inline-grid;
    width: 44px;
    height: 44px;
    flex: 0 0 auto;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
  }

  .nav-toggle span {
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: var(--text);
    transition: transform 180ms ease;
  }

  .nav-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(5px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:last-child {
    transform: translateY(-5px) rotate(-45deg);
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    display: none;
    width: min(320px, 100%);
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(7, 17, 15, 0.96);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: grid;
  }

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

  .hero,
  .split-section {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: 28px;
    padding-top: 124px;
  }

  .hero-panel {
    justify-self: stretch;
    width: 100%;
  }

  .feature-grid,
  .method-grid,
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sticky-heading {
    position: static;
  }
}

@media (max-width: 680px) {
  .brand small {
    display: none;
  }

  .site-header {
    top: 10px;
    width: min(calc(100% - 20px), var(--max));
  }

  .hero {
    width: min(calc(100% - 24px), var(--max));
    min-height: auto;
    padding-top: 112px;
  }

  h1 {
    font-size: clamp(2.65rem, 16vw, 4.1rem);
  }

  .intro-strip,
  .feature-grid,
  .method-grid,
  .service-grid,
  .reference-board {
    grid-template-columns: 1fr;
  }

  .section {
    padding-top: 78px;
  }

  .terminal-lines {
    padding: 18px;
    font-size: 0.82rem;
  }

  .button {
    width: 100%;
  }

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

@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;
  }

  .network-canvas {
    display: none;
  }
}