:root {
  --bg: #07130f;
  --grid: rgba(123, 255, 185, 0.12);
  --green: #68ff9d;
  --amber: #f7c948;
  --ink: #eafff1;
  --muted: #9ab8a6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  background: var(--bg);
}

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

.network-hero {
  min-height: 820px;
  padding: 26px clamp(18px, 5vw, 78px) 90px;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    radial-gradient(circle at 72% 42%, rgba(104, 255, 157, 0.18), transparent 34%),
    #07130f;
  background-size: 58px 58px, 58px 58px, auto, auto;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

nav div {
  display: flex;
  gap: 28px;
  color: var(--muted);
}

.mark {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  border: 1px solid var(--green);
  border-radius: 50%;
  color: var(--green);
  font-family: Arial, sans-serif;
  font-weight: 900;
}

button {
  padding: 11px 15px;
  border: 1px solid var(--green);
  color: var(--green);
  background: transparent;
  cursor: pointer;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) 420px;
  gap: 70px;
  align-items: center;
  padding-top: 100px;
}

.signal,
.kicker {
  margin: 0 0 18px;
  color: var(--green);
  font-family: Arial, sans-serif;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 28px;
  font-size: clamp(42px, 6.8vw, 96px);
  line-height: 0.98;
  letter-spacing: -0.055em;
}

.hero-copy p:last-child {
  max-width: 760px;
  color: var(--muted);
  font-size: 22px;
  line-height: 1.65;
}

.radar {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border: 1px solid var(--green);
  border-radius: 50%;
}

.radar span {
  position: absolute;
  border: 1px solid rgba(104, 255, 157, 0.45);
  border-radius: 50%;
}

.radar span:nth-child(1) {
  inset: 12%;
}

.radar span:nth-child(2) {
  inset: 27%;
}

.radar span:nth-child(3) {
  inset: 42%;
  background: var(--green);
}

.radar strong {
  position: absolute;
  bottom: 28px;
  width: 70%;
  color: var(--amber);
  font-family: Arial, sans-serif;
  text-align: center;
  text-transform: uppercase;
}

.overview,
.map-section,
.engineering,
.use-cases,
footer {
  padding: 94px clamp(18px, 5vw, 78px);
}

.overview {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 54px;
  border-top: 1px solid rgba(104, 255, 157, 0.28);
  border-bottom: 1px solid rgba(104, 255, 157, 0.28);
}

h2 {
  font-size: clamp(34px, 5vw, 68px);
  line-height: 1;
  letter-spacing: -0.04em;
}

.overview p:last-child,
.panel p,
.case-list p,
.map-grid p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.map-section {
  background: #0a1913;
}

.map-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 42px;
  background: rgba(104, 255, 157, 0.25);
  border: 1px solid rgba(104, 255, 157, 0.25);
}

.map-grid article {
  min-height: 280px;
  padding: 28px;
  background: #07130f;
}

.map-grid span {
  display: inline-flex;
  margin-bottom: 30px;
  color: var(--amber);
  font-family: Arial, sans-serif;
  font-weight: 900;
}

.map-grid h3 {
  color: var(--green);
  font-size: 25px;
}

.engineering {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  background: linear-gradient(135deg, #102118, #07130f);
}

.panel {
  padding: 38px;
  border: 1px solid rgba(104, 255, 157, 0.32);
}

.steps {
  display: grid;
  gap: 16px;
}

.steps div {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 18px;
  align-items: center;
  padding: 22px;
  border-left: 4px solid var(--green);
  background: rgba(255, 255, 255, 0.04);
}

.steps b {
  color: var(--amber);
  font-family: Arial, sans-serif;
  font-size: 30px;
}

.use-cases {
  background: #eafff1;
  color: #07130f;
}

.use-cases .kicker {
  color: #0f6b36;
}

.case-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 36px;
}

.case-list p {
  min-height: 220px;
  padding: 25px;
  color: #264d36;
  background: white;
  border-bottom: 5px solid #0f6b36;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  background: #030806;
}

.contact-box {
  display: grid;
  gap: 14px;
  min-width: min(100%, 420px);
  padding: 30px;
  border: 1px solid var(--green);
}

.contact-box a {
  color: var(--green);
  font-family: Arial, sans-serif;
  font-size: 24px;
  font-weight: 900;
}

.contact-box span,
footer p {
  color: var(--muted);
  line-height: 1.7;
}

.topology {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 46px;
  padding: 94px clamp(18px, 5vw, 78px);
  background: #0a1913;
}

.topology-copy p:last-child {
  color: var(--muted);
  font-size: 20px;
  line-height: 1.75;
}

.node-map {
  position: relative;
  min-height: 520px;
  border: 1px solid rgba(104, 255, 157, 0.28);
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 42px 42px;
}

.node-map::before,
.node-map::after {
  content: "";
  position: absolute;
  inset: 20% 12%;
  border-top: 2px dashed var(--green);
  transform: rotate(18deg);
}

.node-map::after {
  inset: 44% 10%;
  transform: rotate(-22deg);
}

.node {
  position: absolute;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 112px;
  height: 112px;
  border: 1px solid var(--green);
  border-radius: 50%;
  color: #07130f;
  background: var(--green);
  font-family: Arial, sans-serif;
  font-weight: 900;
  text-transform: uppercase;
}

.core { left: 42%; top: 38%; }
.tower { left: 8%; top: 16%; }
.power { right: 10%; top: 12%; }
.repair { left: 16%; bottom: 12%; }
.code { right: 16%; bottom: 16%; }

.route-passport {
  padding: 94px clamp(18px, 5vw, 78px);
  color: #07130f;
  background: #eafff1;
}

.route-passport .kicker {
  color: #0f6b36;
}

.route-passport dl {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 0;
  margin: 38px 0 0;
  border: 2px solid #07130f;
}

.route-passport dt,
.route-passport dd {
  margin: 0;
  padding: 24px;
  border-bottom: 2px solid #07130f;
}

.route-passport dt {
  color: #07130f;
  background: var(--amber);
  font-family: Arial, sans-serif;
  font-weight: 900;
  text-transform: uppercase;
}

.route-passport dd {
  color: #264d36;
  background: white;
  line-height: 1.7;
}

.route-passport dt:nth-last-of-type(1),
.route-passport dd:nth-last-of-type(1) {
  border-bottom: 0;
}

.maintenance-log {
  padding: 94px clamp(18px, 5vw, 78px);
  background: #030806;
}

.log-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 24px;
  padding: 26px 0;
  border-bottom: 1px solid rgba(104, 255, 157, 0.26);
}

.log-row b {
  color: var(--amber);
  font-family: Arial, sans-serif;
  font-size: 32px;
}

.log-row span {
  color: var(--ink);
  font-size: 22px;
  line-height: 1.55;
}

@media (max-width: 980px) {
  .hero-layout,
  .overview,
  .map-grid,
  .engineering,
  .case-list,
  footer,
  .topology {
    grid-template-columns: 1fr;
    display: grid;
  }

  .route-passport dl,
  .log-row {
    grid-template-columns: 1fr;
  }

  .node-map {
    min-height: 430px;
  }

  nav {
    flex-wrap: wrap;
  }

  nav div {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }
}