:root {
  color-scheme: dark;
  --bg: #05080b;
  --panel: rgba(9, 18, 24, 0.76);
  --panel-strong: rgba(13, 27, 36, 0.9);
  --text: #e8f8ff;
  --muted: #9bb8c6;
  --line: rgba(128, 220, 255, 0.34);
  --cyan: #78dfff;
  --blue: #3e9dff;
  --green: #64f0b0;
  --amber: #ffd37a;
  --shadow: rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 18% 18%, rgba(120, 223, 255, 0.18), transparent 30rem),
    radial-gradient(circle at 78% 6%, rgba(100, 240, 176, 0.14), transparent 28rem),
    linear-gradient(135deg, #05080b 0%, #071018 45%, #020406 100%);
  color: var(--text);
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -2;
  content: "";
  background-image:
    linear-gradient(rgba(120, 223, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 223, 255, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.95), transparent 90%);
}

#signalField {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  opacity: 0.85;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(18px);
}

.brand,
nav a,
.button {
  color: var(--text);
  text-decoration: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 68% 32%, var(--green), transparent 23%),
    linear-gradient(135deg, rgba(120, 223, 255, 0.9), rgba(62, 157, 255, 0.35));
  box-shadow: 0 0 28px rgba(120, 223, 255, 0.34);
}

nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px;
  border: 1px solid rgba(128, 220, 255, 0.18);
  background: rgba(4, 10, 14, 0.42);
}

nav a {
  padding: 10px 14px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

nav a:hover {
  color: var(--cyan);
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 410px;
  gap: 48px;
  align-items: center;
  min-height: calc(100vh - 84px);
  padding: 34px 0 72px;
}

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

.eyebrow {
  margin: 0 0 14px;
  color: var(--amber);
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 24px;
  font-size: clamp(48px, 7vw, 92px);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.lede,
.split p,
article p {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.7;
}

.lede {
  max-width: 670px;
  font-size: 20px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid var(--line);
  font-weight: 800;
  box-shadow: 0 14px 38px var(--shadow);
}

.button.primary {
  border-color: rgba(100, 240, 176, 0.72);
  background: linear-gradient(135deg, rgba(100, 240, 176, 0.95), rgba(120, 223, 255, 0.55));
  color: #031016;
}

.button.ghost {
  background: rgba(7, 18, 24, 0.56);
}

.signal-console,
.band,
.matrix-card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 24px 80px var(--shadow), inset 0 0 42px rgba(120, 223, 255, 0.05);
}

.signal-console {
  position: relative;
  padding: 26px;
  overflow: hidden;
}

.signal-console::before {
  position: absolute;
  inset: 12px;
  content: "";
  border: 1px solid rgba(100, 240, 176, 0.28);
  pointer-events: none;
}

.console-top,
.matrix-row,
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.console-top {
  margin-bottom: 22px;
  color: var(--cyan);
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
}

dl {
  display: grid;
  gap: 16px;
  margin: 0;
}

dt {
  color: var(--muted);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

dd {
  margin: 4px 0 0;
  color: var(--text);
  font-size: 22px;
  font-weight: 800;
}

.band,
.split {
  margin: 0 0 24px;
  padding: 42px;
}

.section-title {
  max-width: 840px;
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

article {
  min-height: 220px;
  padding: 24px;
  border: 1px solid rgba(128, 220, 255, 0.22);
  background: linear-gradient(180deg, rgba(13, 27, 36, 0.8), rgba(6, 12, 18, 0.62));
}

.metric {
  display: block;
  margin-bottom: 34px;
  color: var(--green);
  font-family: "JetBrains Mono", monospace;
  font-size: 38px;
  font-weight: 800;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(320px, 1fr);
  gap: 28px;
  align-items: center;
}

.matrix-card {
  padding: 20px;
}

.matrix-row {
  min-height: 58px;
  border-bottom: 1px solid rgba(128, 220, 255, 0.16);
  color: var(--muted);
}

.matrix-row:last-child {
  border-bottom: 0;
}

.matrix-row b {
  color: var(--text);
}

.matrix-row i {
  width: 80px;
  height: 10px;
  background: linear-gradient(90deg, var(--green), var(--cyan), var(--blue));
  box-shadow: 0 0 24px rgba(120, 223, 255, 0.38);
}

.compact {
  margin-bottom: 64px;
}

.ops-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.ops-strip span {
  padding: 12px 14px;
  border: 1px solid rgba(128, 220, 255, 0.22);
  background: rgba(120, 223, 255, 0.08);
  color: var(--text);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  font-weight: 700;
}

footer {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 26px 0 42px;
  color: var(--muted);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
}

@media (max-width: 900px) {
  .site-header,
  nav,
  .hero-actions,
  footer {
    align-items: flex-start;
  }

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

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

  nav a {
    padding-inline: 8px;
  }

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

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  .band,
  .split {
    padding: 26px;
  }
}

@media (max-width: 520px) {
  main,
  .site-header,
  footer {
    width: min(100% - 20px, 1180px);
  }

  h1 {
    font-size: 44px;
  }

  .signal-console,
  .band,
  .split {
    padding: 20px;
  }
}