:root {
  color-scheme: dark;
  --bg: #07111d;
  --bg-soft: #0b1726;
  --surface: #0d1c2d;
  --surface-strong: #10243a;
  --line: #203a57;
  --line-soft: #17304b;
  --text: #eef6ff;
  --muted: #9eb4ca;
  --muted-strong: #c8d7e6;
  --accent: #1f8fff;
  --accent-strong: #66b7ff;
  --ok: #21c083;
  --warn: #f5b83f;
  --danger: #ff4d6d;
  --radius: 8px;
  --shadow: 0 24px 80px rgb(0 0 0 / 0.38);
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --sans: "Segoe UI", Roboto, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(180deg, rgb(7 17 29 / 0.96), rgb(7 17 29 / 1)),
    repeating-linear-gradient(90deg, rgb(31 143 255 / 0.08) 0 1px, transparent 1px 92px);
  font-family: var(--sans);
  line-height: 1.55;
}

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

a:hover {
  color: var(--accent-strong);
}

pre,
code {
  font-family: var(--mono);
}

pre {
  margin: 0;
  overflow: auto;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 50;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: var(--accent);
  color: #04101d;
  font-weight: 700;
}

.skip-link:focus {
  top: 12px;
}

.section-shell {
  width: min(1180px, calc(100% - 32px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgb(32 58 87 / 0.72);
  background: rgb(7 17 29 / 0.92);
  backdrop-filter: blur(18px);
}

.nav-wrap {
  width: min(1180px, calc(100% - 32px));
  min-height: 74px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, #0b2440, #0f3f70);
  color: var(--accent-strong);
  font-weight: 800;
  letter-spacing: 0;
}

.brand strong {
  display: block;
  font-size: 15px;
  letter-spacing: 0;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-links a,
.nav-toggle {
  min-height: 38px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--muted-strong);
  font: 600 13px/1 var(--sans);
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-toggle:focus-visible {
  border-color: var(--line);
  color: var(--text);
  outline: none;
}

.nav-cta {
  border-color: var(--accent) !important;
  background: rgb(31 143 255 / 0.14);
  color: var(--text) !important;
}

.nav-toggle {
  display: none;
  background: transparent;
}

.hero {
  min-height: calc(100dvh - 74px);
  padding: 76px 0 48px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.86fr);
  align-items: center;
  gap: 42px;
}

.section-kicker {
  margin: 0 0 16px;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
.section-intro h2,
.evidence h2,
.architecture h2,
.quick-start h2 {
  margin: 0;
  letter-spacing: 0;
  line-height: 1.02;
}

.hero h1 {
  max-width: 740px;
  font-size: clamp(40px, 5.3vw, 70px);
}

.hero-lede {
  max-width: 660px;
  margin: 24px 0 0;
  color: var(--muted-strong);
  font-size: clamp(17px, 2vw, 21px);
}

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

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: var(--radius);
  font-weight: 800;
  font-size: 14px;
}

.button.primary {
  background: var(--accent);
  color: #03111f;
}

.button.secondary {
  border: 1px solid var(--line);
  background: rgb(255 255 255 / 0.04);
  color: var(--text);
}

.button:active {
  transform: translateY(1px);
}

.hero-facts {
  margin: 34px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.hero-facts div,
.stat,
.capability-list article,
.layer-map article {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgb(13 28 45 / 0.72);
}

.hero-facts div {
  padding: 14px;
}

.hero-facts dt,
.stat span,
.layer-map span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hero-facts dd {
  margin: 4px 0 0;
  color: var(--text);
  font-weight: 800;
}

.hero-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgb(16 36 58 / 0.96), rgb(8 19 32 / 0.96)),
    var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-header {
  min-height: 52px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--muted-strong);
  font-size: 13px;
}

.panel-header strong {
  color: var(--ok);
}

.hero-panel pre,
.command-block {
  padding: 18px;
  background: #06101c;
  color: #d5e9ff;
  font-size: 12px;
}

.scope {
  display: block;
  height: 260px;
  width: calc(100% - 32px);
  margin: 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: #061421;
}

.panel-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 0 16px 16px;
}

.panel-metrics span {
  padding: 8px 10px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  color: var(--muted-strong);
  font: 700 12px/1.2 var(--mono);
}

.protocol-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 10px 0 70px;
}

.protocol-strip article {
  padding: 18px;
  border-top: 1px solid var(--line);
}

.protocol-strip strong {
  display: block;
  color: var(--text);
  font-size: 18px;
}

.protocol-strip span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}

.section-grid,
.evidence,
.architecture,
.quick-start {
  padding: 88px 0;
  border-top: 1px solid var(--line-soft);
}

.section-grid {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 56px;
  align-items: start;
}

.section-intro h2,
.evidence h2,
.architecture h2,
.quick-start h2 {
  max-width: 720px;
  font-size: clamp(30px, 4vw, 52px);
}

.section-intro p,
.evidence p,
.quick-start p {
  max-width: 620px;
  color: var(--muted-strong);
}

.capability-list {
  display: grid;
  gap: 12px;
}

.capability-list article,
.layer-map article {
  padding: 22px;
}

.capability-list h3,
.layer-map h3 {
  margin: 0;
  font-size: 19px;
}

.capability-list p,
.layer-map p {
  margin: 8px 0 0;
  color: var(--muted);
}

.evidence {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 48px;
  align-items: center;
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.stat {
  padding: 22px;
}

.stat strong {
  display: block;
  margin-top: 12px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1;
}

.stat small {
  display: block;
  margin-top: 10px;
  color: var(--muted);
}

.layer-map {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.quick-start {
  padding-bottom: 76px;
}

.command-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 28px 0 12px;
}

.tab {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgb(255 255 255 / 0.03);
  color: var(--muted-strong);
  font: 800 13px/1 var(--sans);
  cursor: pointer;
}

.tab.is-active {
  border-color: var(--accent);
  background: rgb(31 143 255 / 0.16);
  color: var(--text);
}

.is-hidden {
  display: none;
}

.safety-note {
  padding-left: 16px;
  border-left: 3px solid var(--warn);
}

.footer {
  padding: 30px 0 42px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  color: var(--muted);
}

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

.footer p {
  margin: 4px 0 0;
}

.footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 13px;
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (max-width: 980px) {
  .hero,
  .section-grid,
  .evidence {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 54px;
  }

  .protocol-strip,
  .layer-map {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .nav-wrap {
    min-height: 66px;
  }

  .brand small {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
  }

  .nav-links {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 74px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
  }

  .nav-links.is-open {
    display: flex;
  }

  .hero-facts,
  .protocol-strip,
  .evidence-grid,
  .layer-map,
  .panel-metrics {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .scope {
    height: 220px;
  }

  .footer {
    flex-direction: column;
  }
}