:root {
  color-scheme: dark;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  --bg: #07111f;
  --panel: #0d1a2a;
  --ink: #f5f9ff;
  --muted: rgba(245, 249, 255, 0.7);
  --dim: rgba(245, 249, 255, 0.46);
  --line: rgba(89, 196, 255, 0.22);
  --blue: #5bd7ff;
  --blue-strong: #168cff;
  --coral: #ff9966;
  --steel: #9cb8cf;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    linear-gradient(rgba(91, 215, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 140, 255, 0.045) 1px, transparent 1px),
    linear-gradient(150deg, #07111f 0%, #0d1a2a 48%, #061a38 100%);
  background-size: 44px 44px, 44px 44px, auto;
  color: var(--ink);
}

a {
  color: inherit;
}

.site-shell {
  min-height: 100vh;
  overflow: hidden;
}

.site-header,
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  padding: 1.4rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-decoration: none;
  text-transform: uppercase;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.42);
}

nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

nav a,
footer a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: rgba(13, 26, 42, 0.42);
}

.icon-link svg {
  flex: 0 0 auto;
}

nav a:hover,
footer a:hover,
.policy a:hover {
  color: var(--blue);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  align-items: end;
  gap: clamp(2rem, 6vw, 6rem);
  width: min(1180px, calc(100% - 2rem));
  min-height: calc(100vh - 86px);
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 7rem) 0 clamp(3rem, 8vw, 6rem);
}

.eyebrow {
  margin: 0 0 1.1rem;
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 1.4rem;
  color: var(--ink);
  font-size: clamp(4.8rem, 14vw, 11.5rem);
  font-weight: 950;
  line-height: 0.78;
  letter-spacing: 0;
}

h2 {
  color: var(--ink);
  font-size: clamp(2rem, 5vw, 4.25rem);
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 0.7rem;
  font-size: 1.05rem;
}

.lede {
  max-width: 680px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 650;
  line-height: 1.55;
}

.signal-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
  background: rgba(13, 26, 42, 0.82);
  box-shadow: 0 20px 70px rgba(0, 0, 0, 0.34);
}

.signal-panel img {
  display: block;
  width: 100%;
  max-width: 210px;
  margin: 0 auto 1.4rem;
  border-radius: 26px;
}

.signal-panel dl {
  display: grid;
  gap: 1px;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--line);
}

.signal-panel div {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 1rem;
  padding: 0.85rem;
  background: #081524;
}

dt {
  color: var(--dim);
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

dd {
  margin: 0;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 800;
}

.principles,
.assurance,
.open-source,
.policy {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.principles {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(4rem, 8vw, 7rem) 0;
  border-top: 1px solid var(--line);
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

article {
  min-height: 210px;
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
  background: rgba(8, 21, 36, 0.94);
}

article span {
  display: block;
  margin-bottom: 2.1rem;
  color: var(--coral);
  font-size: 0.72rem;
  font-weight: 950;
  letter-spacing: 0.2em;
}

article p,
.assurance li,
.policy p,
.policy li {
  color: var(--muted);
  line-height: 1.7;
}

.assurance {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.72fr);
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(4rem, 8vw, 7rem) 0;
  border-top: 1px solid var(--line);
}

.assurance ul {
  display: grid;
  gap: 0.9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.assurance li {
  border-left: 2px solid var(--blue-strong);
  padding-left: 1rem;
  font-weight: 750;
}

.open-source {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(280px, 0.72fr);
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(4rem, 8vw, 7rem) 0;
  border-top: 1px solid var(--line);
}

.open-source p {
  color: var(--muted);
  font-size: 1.05rem;
  font-weight: 650;
  line-height: 1.7;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  border: 1px solid rgba(91, 215, 255, 0.55);
  border-radius: 8px;
  padding: 0.65rem 1rem;
  color: #04111f;
  background: var(--blue);
  font-size: 0.9rem;
  font-weight: 900;
  text-decoration: none;
}

.button-link.secondary {
  color: var(--ink);
  background: rgba(13, 26, 42, 0.76);
}

.policy {
  max-width: 860px;
  padding: clamp(3rem, 8vw, 6rem) 0;
}

.policy h1 {
  margin-bottom: 0.8rem;
  font-size: clamp(2.8rem, 8vw, 6rem);
  line-height: 0.9;
}

.updated {
  margin-bottom: 3rem;
  color: var(--steel);
  font-weight: 800;
}

.policy section {
  padding: 2rem 0;
  border-top: 1px solid var(--line);
}

.policy h2 {
  margin-bottom: 1rem;
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  line-height: 1.05;
}

.policy p:last-child,
.policy ul:last-child {
  margin-bottom: 0;
}

.policy ul {
  padding-left: 1.2rem;
}

footer {
  border-top: 1px solid var(--line);
  padding: 1.6rem 0 2rem;
  color: var(--dim);
}

footer span {
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

@media (max-width: 780px) {
  .hero,
  .principles,
  .assurance,
  .open-source {
    grid-template-columns: 1fr;
  }

  .hero {
    align-items: start;
    min-height: auto;
  }

  .principle-grid {
    grid-template-columns: 1fr;
  }

  .signal-panel img {
    max-width: 150px;
  }
}

@media (max-width: 480px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .signal-panel div {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}