:root {
  --bg: #07110f;
  --bg-soft: #0c1916;
  --panel: rgba(16, 33, 29, 0.76);
  --panel-strong: #11231f;
  --ink: #eef8f4;
  --muted: #9bb4aa;
  --line: rgba(169, 221, 200, 0.16);
  --accent: #69e0b4;
  --accent-strong: #a1f4d4;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 8%, rgba(64, 191, 145, 0.16), transparent 30rem),
    radial-gradient(circle at 5% 44%, rgba(33, 112, 88, 0.12), transparent 28rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.52), transparent 78%);
  content: "";
  opacity: 0.32;
}

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

.page-shell {
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 88px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  font-weight: 720;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.brand-mark {
  width: 34px;
  color: var(--accent);
  fill: none;
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 1.4;
}

.nav {
  display: flex;
  gap: 28px;
  color: var(--muted);
  font-size: 14px;
}

.nav a,
.button {
  transition: color 160ms ease, border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, 0.88fr);
  align-items: center;
  gap: 70px;
  min-height: 650px;
  padding: 84px 0;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(105, 224, 180, 0.1), 0 0 22px rgba(105, 224, 180, 0.7);
}

h1,
h2,
h3,
p,
dl,
dd {
  margin: 0;
}

h1 {
  max-width: 780px;
  font-size: clamp(50px, 7vw, 92px);
  font-weight: 580;
  letter-spacing: -0.065em;
  line-height: 0.94;
}

.lede {
  max-width: 620px;
  margin-top: 28px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 680;
}

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

.button.secondary {
  background: rgba(255, 255, 255, 0.025);
}

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

.button.primary:hover {
  background: var(--accent-strong);
}

.button.secondary:hover {
  border-color: rgba(169, 221, 200, 0.35);
}

.node-visual {
  position: relative;
  display: grid;
  width: min(100%, 460px);
  aspect-ratio: 1;
  place-items: center;
  margin-left: auto;
}

.node-visual::before {
  position: absolute;
  width: 56%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(68, 189, 144, 0.14);
  filter: blur(46px);
  content: "";
}

.orbit {
  position: absolute;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.orbit-one {
  inset: 9%;
}

.orbit-two {
  inset: 23%;
  border-style: dashed;
}

.node-core {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 38%;
  aspect-ratio: 1;
  border: 1px solid rgba(105, 224, 180, 0.5);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(31, 72, 59, 0.96), rgba(11, 25, 21, 0.96));
  box-shadow: var(--shadow), inset 0 1px rgba(255, 255, 255, 0.08);
}

.node-core strong {
  margin: 7px 0;
  font-size: clamp(26px, 4vw, 42px);
  letter-spacing: 0.08em;
}

.node-core span {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.15em;
}

.satellite {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 2px solid var(--bg);
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(105, 224, 180, 0.8);
}

.satellite-one { top: 15%; left: 29%; }
.satellite-two { right: 8%; bottom: 41%; }
.satellite-three { bottom: 12%; left: 35%; }

.section {
  padding: 92px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 42px;
}

h2 {
  max-width: 720px;
  font-size: clamp(34px, 5vw, 60px);
  font-weight: 580;
  letter-spacing: -0.045em;
  line-height: 1.04;
}

h3 {
  margin: 42px 0 14px;
  font-size: 20px;
  font-weight: 650;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  min-height: 260px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: linear-gradient(145deg, var(--panel), rgba(9, 21, 18, 0.72));
  box-shadow: inset 0 1px rgba(255, 255, 255, 0.025);
}

.card-number {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 12px;
}

.card p,
.section-copy {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
}

.network {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
}

.section-copy {
  max-width: 630px;
  margin-top: 24px;
}

.profile-list {
  border-top: 1px solid var(--line);
}

.profile-list div {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.profile-list dt {
  color: var(--muted);
}

.profile-list dd {
  text-align: right;
  font-weight: 650;
}

.status {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}

.status-line {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 680;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding: 34px 0 48px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 34px;
    min-height: auto;
    padding: 70px 0;
  }

  .node-visual {
    width: min(100%, 390px);
    margin: 10px auto 0;
  }

  .card-grid,
  .network {
    grid-template-columns: 1fr;
  }

  .network {
    gap: 52px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 28px, 1240px);
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 18px;
    padding: 20px 0;
  }

  .nav {
    width: 100%;
    justify-content: space-between;
    gap: 14px;
  }

  h1 {
    font-size: clamp(46px, 15vw, 68px);
  }

  .hero {
    padding: 54px 0 64px;
  }

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

  .node-visual {
    width: 92%;
  }

  .section {
    padding: 68px 0;
  }

  .status,
  .footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .status-line {
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}