:root {
  color-scheme: dark;
  --ink: #f4f8ff;
  --muted: #9fb0ca;
  --faint: #6f819f;
  --navy: #071229;
  --navy-2: #0a1935;
  --panel: rgba(13, 31, 62, 0.74);
  --line: rgba(142, 172, 214, 0.18);
  --cyan: #2cead9;
  --blue: #2aa8ff;
  --danger: #ff8c7a;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  position: relative;
  isolation: isolate;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% 4%, rgba(22, 121, 222, 0.2), transparent 28rem),
    radial-gradient(circle at 12% 40%, rgba(36, 235, 211, 0.08), transparent 30rem),
    var(--navy);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.network-background {
  position: fixed;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

main,
footer {
  position: relative;
  z-index: 1;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.65rem 1rem;
  border-radius: 0.5rem;
  background: var(--cyan);
  color: #031221;
  transition: top 160ms ease;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  width: min(calc(100% - 2rem), var(--max));
  min-height: 74px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 18, 41, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink);
  font-size: 1.15rem;
  font-weight: 760;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand img {
  border-radius: 22%;
}

nav {
  display: flex;
  gap: 2rem;
}

nav a,
.text-link {
  color: var(--muted);
  text-decoration: none;
  transition: color 160ms ease;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.language-button {
  min-width: 3.5rem;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
}

.language-button:hover,
.language-button:focus-visible {
  color: var(--cyan);
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 0.75rem;
  padding: 0.76rem 1.15rem;
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  box-shadow: 0 12px 34px rgba(18, 162, 228, 0.2);
  color: #031225;
  font-weight: 760;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 16px 42px rgba(18, 162, 228, 0.32);
}

.button-small {
  min-height: 38px;
  padding: 0.45rem 0.85rem;
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: none;
  color: var(--ink);
  font-size: 0.9rem;
}

.hero {
  display: grid;
  width: min(calc(100% - 2rem), var(--max));
  min-height: calc(100vh - 74px);
  margin: 0 auto;
  padding: 5.5rem 0;
  grid-template-columns: 1.06fr 0.94fr;
  align-items: center;
  gap: clamp(3rem, 7vw, 7rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 1.6rem;
  color: var(--cyan);
  font-size: 0.82rem;
  font-weight: 760;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.pulse {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 0 rgba(44, 234, 217, 0.45);
  animation: pulse 2.4s infinite;
}

@keyframes pulse {
  70% { box-shadow: 0 0 0 9px rgba(44, 234, 217, 0); }
  100% { box-shadow: 0 0 0 0 rgba(44, 234, 217, 0); }
}

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

h1 {
  max-width: 760px;
  margin-bottom: 1.4rem;
  font-size: clamp(3rem, 6vw, 5.85rem);
  font-weight: 780;
  letter-spacing: -0.064em;
  line-height: 0.98;
}

.hero-lede {
  max-width: 670px;
  margin-bottom: 2rem;
  color: var(--muted);
  font-size: clamp(1.08rem, 1.6vw, 1.3rem);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.trust-list {
  display: flex;
  margin: 2.3rem 0 0;
  padding: 0;
  color: var(--faint);
  font-size: 0.88rem;
  list-style: none;
}

.trust-list li + li::before {
  margin: 0 0.75rem;
  color: rgba(159, 176, 202, 0.4);
  content: "/";
}

.signal-console {
  position: relative;
  overflow: hidden;
  padding: 1.35rem;
  border: 1px solid rgba(89, 210, 255, 0.24);
  border-radius: 1.4rem;
  background: linear-gradient(155deg, rgba(16, 39, 76, 0.96), rgba(6, 17, 39, 0.96));
  box-shadow: 0 34px 80px rgba(0, 0, 0, 0.4), inset 0 1px rgba(255, 255, 255, 0.06);
}

.signal-console::after {
  position: absolute;
  width: 13rem;
  height: 13rem;
  right: -6rem;
  top: -7rem;
  border-radius: 50%;
  background: rgba(44, 234, 217, 0.11);
  filter: blur(26px);
  content: "";
}

.console-topbar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
}

.console-topbar strong {
  display: block;
  margin-top: 0.2rem;
  font-size: 1.05rem;
}

.console-kicker {
  color: var(--faint);
  font-size: 0.68rem;
  letter-spacing: 0.13em;
}

.severity {
  border: 1px solid rgba(255, 140, 122, 0.32);
  border-radius: 999px;
  padding: 0.3rem 0.6rem;
  background: rgba(255, 140, 122, 0.1);
  color: var(--danger);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.flow-map {
  display: grid;
  margin: 2.7rem 0;
  grid-template-columns: 1fr 0.5fr 1fr 0.5fr 1fr;
  align-items: center;
}

.flow-node {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
  text-align: center;
}

.node-icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(44, 234, 217, 0.3);
  border-radius: 50%;
  background: rgba(44, 234, 217, 0.08);
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 850;
}

.flow-node small {
  display: block;
  color: var(--faint);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
}

.flow-node b {
  display: block;
  overflow: hidden;
  max-width: 100%;
  font-size: 0.72rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.flow-line {
  position: relative;
  height: 1px;
  overflow: visible;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
}

.flow-line::after {
  position: absolute;
  width: 6px;
  height: 6px;
  top: -2.5px;
  left: 0;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
  content: "";
  animation: travel 2.7s linear infinite;
}

@keyframes travel {
  to { left: calc(100% - 6px); }
}

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

.evidence-list div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.82rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.82rem;
}

.evidence-list b {
  color: var(--ink);
  font-weight: 630;
  text-align: right;
}

.console-note {
  margin: 1rem 0 0;
  color: var(--faint);
  font-size: 0.75rem;
}

.section {
  width: min(calc(100% - 2rem), var(--max));
  margin: 0 auto;
  padding: 7rem 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  margin-bottom: 4rem;
  grid-template-columns: 80px minmax(0, 780px);
  gap: 1.5rem;
}

.section-heading.compact {
  margin-bottom: 3rem;
}

.section-index {
  padding-top: 0.25rem;
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.83rem;
}

.section-label {
  margin-bottom: 1rem;
  color: var(--faint);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

h2 {
  max-width: 760px;
  margin-bottom: 1.2rem;
  font-size: clamp(2.25rem, 4.2vw, 4rem);
  font-weight: 750;
  letter-spacing: -0.045em;
  line-height: 1.06;
}

.section-heading p:last-child {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.08rem;
}

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

.feature-grid article {
  min-height: 290px;
  padding: 1.65rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(10, 25, 53, 0.55);
}

.feature-number {
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
}

h3 {
  margin: 3.2rem 0 0.9rem;
  font-size: 1.32rem;
}

.feature-grid p,
.architecture-flow p {
  color: var(--muted);
}

.rule-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.2rem;
}

.rule-strip span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.48rem 0.8rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.boundary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.boundary-card {
  min-height: 350px;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-radius: 1.2rem;
}

.boundary-card.collect {
  background: linear-gradient(145deg, rgba(36, 218, 203, 0.12), rgba(10, 25, 53, 0.62));
}

.boundary-card.never {
  background: linear-gradient(145deg, rgba(31, 80, 143, 0.2), rgba(10, 25, 53, 0.62));
}

.boundary-label {
  color: var(--cyan);
  font-size: 0.73rem;
  font-weight: 850;
  letter-spacing: 0.13em;
}

.boundary-card ul {
  margin: 2.2rem 0 0;
  padding: 0;
  list-style: none;
}

.boundary-card li {
  position: relative;
  padding: 0.82rem 0 0.82rem 1.6rem;
  border-bottom: 1px solid var(--line);
  color: #d7e2f3;
}

.boundary-card li::before {
  position: absolute;
  left: 0;
  color: var(--cyan);
  content: "✓";
}

.never li::before {
  color: #75a3dc;
  content: "—";
}

.retention-note {
  max-width: 850px;
  margin: 1.5rem 0 0;
  padding-left: 1.4rem;
  border-left: 2px solid var(--cyan);
  color: var(--muted);
}

.architecture-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 1.2rem;
}

.architecture-flow article {
  padding: 1.6rem;
  border-top: 1px solid rgba(44, 234, 217, 0.5);
  background: linear-gradient(180deg, rgba(10, 25, 53, 0.45), transparent);
}

.architecture-flow article > span {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.78rem;
}

.architecture-flow h3 {
  margin-top: 2rem;
}

.architecture-arrow {
  display: grid;
  place-items: center;
  color: rgba(44, 234, 217, 0.5);
}

.open-source-section {
  position: relative;
}

.open-source-section::before {
  position: absolute;
  width: 1px;
  height: 58%;
  top: 7rem;
  right: 2rem;
  background: rgba(44, 234, 217, 0.28);
  box-shadow: -18px 0 rgba(42, 168, 255, 0.12), -36px 0 rgba(44, 234, 217, 0.06);
  content: "";
}

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

.platform-grid article {
  min-height: 220px;
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(8, 23, 49, 0.7);
  backdrop-filter: blur(14px);
}

.platform-mark {
  display: inline-block;
  margin-bottom: 2.8rem;
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.platform-grid strong {
  display: block;
  margin-bottom: 0.65rem;
  font-size: 1.18rem;
}

.platform-grid p {
  margin: 0;
  color: var(--muted);
}

.open-source-link {
  display: inline-flex;
  margin-top: 1.5rem;
  align-items: center;
  gap: 0.65rem;
  color: var(--cyan);
  font-weight: 720;
  text-decoration: none;
}

.open-source-link:hover,
.open-source-link:focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.3rem;
}

.status-section {
  display: grid;
  grid-template-columns: minmax(0, 760px) auto;
  align-items: end;
  gap: 3rem;
}

.status-section p:not(.section-label) {
  color: var(--muted);
  font-size: 1.08rem;
}

.button-light {
  white-space: nowrap;
}

footer {
  display: grid;
  width: min(calc(100% - 2rem), var(--max));
  margin: 0 auto;
  padding: 2.5rem 0 3rem;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.82rem;
}

footer p {
  margin: 0;
}

.footer-brand {
  font-size: 1rem;
}

@media (max-width: 900px) {
  .site-header nav {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 5rem 0;
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 720px;
  }

  .signal-console {
    max-width: 640px;
  }

  .feature-grid,
  .boundary-grid,
  .platform-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid article {
    min-height: auto;
  }

  .architecture-flow {
    grid-template-columns: 1fr;
  }

  .architecture-arrow {
    transform: rotate(90deg);
  }

  .status-section {
    grid-template-columns: 1fr;
    align-items: start;
  }

  footer {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }
}

@media (max-width: 560px) {
  .site-header {
    width: min(calc(100% - 1.25rem), var(--max));
  }

  .button-small {
    display: none;
  }

  .hero,
  .section,
  footer {
    width: min(calc(100% - 2rem), var(--max));
  }

  .hero {
    padding: 3.6rem 0 4.5rem;
  }

  h1 {
    font-size: clamp(2.75rem, 14vw, 4.2rem);
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .trust-list {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.4rem;
  }

  .trust-list li + li::before {
    margin: 0;
    content: "";
  }

  .flow-node b {
    max-width: 80px;
  }

  .section {
    padding: 5rem 0;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }

  .boundary-card {
    min-height: auto;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}