:root {
  --teal-950: #041f22;
  --teal-900: #07383b;
  --teal-800: #0b4b4e;
  --clay: #f3eee5;
  --paper: #fbfaf6;
  --white: #ffffff;
  --cobalt: #2859d9;
  --cobalt-soft: #dfe7ff;
  --amber: #f2a23b;
  --amber-soft: #ffe9c7;
  --graphite: #22292a;
  --muted: #667071;
  --line: #d8d7d0;
  --line-dark: rgba(255, 255, 255, 0.18);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --max: 1480px;
  --header-height: 82px;
  --shadow: 0 30px 80px rgba(4, 31, 34, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 22px);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--graphite);
  font-family: Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.72;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
}

button,
a,
summary {
  font: inherit;
}

a {
  color: inherit;
}

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

p:last-child {
  margin-bottom: 0;
}

::selection {
  color: var(--white);
  background: var(--cobalt);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(4, 31, 34, 0.94);
  color: var(--white);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.header-inner {
  width: min(calc(100% - 48px), var(--max));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.brand-lockup {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 12px;
}

.brand-lockup img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.brand-lockup div {
  display: flex;
  flex-direction: column;
  line-height: 1;
}

.brand-lockup strong {
  font-size: 20px;
  letter-spacing: -0.04em;
}

.brand-lockup span {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.primary-nav {
  display: flex;
  align-items: stretch;
  align-self: stretch;
  gap: clamp(12px, 1.65vw, 30px);
}

.primary-nav a {
  position: relative;
  display: flex;
  align-items: center;
  color: rgba(255, 255, 255, 0.68);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 180ms ease;
}

.primary-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--amber);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.primary-nav a:hover,
.primary-nav a:focus-visible,
.primary-nav a[aria-current="page"] {
  color: var(--white);
}

.primary-nav a:hover::after,
.primary-nav a:focus-visible::after,
.primary-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.primary-nav a:focus-visible,
.menu-toggle:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 4px;
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 14px;
  background: transparent;
  color: var(--white);
  cursor: pointer;
}

.menu-toggle span:not(.sr-only) {
  display: block;
  width: 100%;
  height: 1px;
  margin: 6px 0;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  transform: translateY(3.5px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-3.5px) rotate(-45deg);
}

.hero {
  width: min(calc(100% - 32px), 1840px);
  margin: 16px auto 0;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--teal-950);
  color: var(--white);
}

.hero-grid {
  min-height: 690px;
  display: grid;
  grid-template-columns: minmax(0, 0.97fr) minmax(540px, 0.86fr);
}

.hero-copy {
  position: relative;
  z-index: 1;
  display: flex;
  min-width: 0;
  padding: clamp(72px, 7vw, 116px) clamp(44px, 6vw, 112px) 72px;
  flex-direction: column;
  justify-content: center;
  background:
    radial-gradient(circle at 88% 18%, rgba(40, 89, 217, 0.28), transparent 30%),
    linear-gradient(145deg, var(--teal-950), var(--teal-900));
}

.hero-copy::before {
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 100%;
  border-right: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
  content: "";
  opacity: 0.35;
  pointer-events: none;
}

.system-label {
  position: relative;
  margin-bottom: 42px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.system-label span {
  display: inline-block;
  margin-right: 14px;
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--amber);
  color: var(--teal-950);
  letter-spacing: 0.12em;
}

.hero h1 {
  position: relative;
  max-width: 820px;
  margin-bottom: 32px;
  font-size: clamp(48px, 5.2vw, 92px);
  line-height: 1.06;
  letter-spacing: -0.065em;
}

.hero-tagline {
  position: relative;
  max-width: 660px;
  margin-bottom: 18px;
  color: var(--white);
  font-size: clamp(20px, 1.45vw, 26px);
  font-weight: 600;
  line-height: 1.55;
}

.hero-intro {
  position: relative;
  max-width: 670px;
  margin-bottom: 36px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 16px;
}

.hero-markers {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-markers span {
  padding: 7px 13px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 12px;
  font-weight: 600;
}

.hero-media {
  min-width: 0;
  min-height: 520px;
  overflow: hidden;
  background: #122a2c;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.system-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line-dark);
  background: #073033;
}

.system-rail > div {
  min-width: 0;
  padding: 27px 32px 29px;
  border-right: 1px solid var(--line-dark);
}

.system-rail > div:last-child {
  border-right: 0;
}

.system-rail span,
.system-rail strong,
.system-rail small {
  display: block;
}

.system-rail span {
  margin-bottom: 12px;
  color: var(--amber);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
}

.system-rail strong {
  margin-bottom: 3px;
  font-size: 15px;
}

.system-rail small {
  color: rgba(255, 255, 255, 0.52);
  font-size: 12px;
}

.breadcrumb {
  width: min(calc(100% - 48px), var(--max));
  margin: 24px auto 0;
  color: var(--muted);
  font-size: 12px;
}

.breadcrumb span {
  margin-right: 8px;
}

.section-pad {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  padding-top: clamp(96px, 10vw, 164px);
  padding-bottom: clamp(96px, 10vw, 164px);
}

.section-kicker {
  margin-bottom: 52px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--line);
  color: var(--cobalt);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

.intro-layout,
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.55fr);
  gap: clamp(54px, 8vw, 138px);
  align-items: start;
}

.section-number {
  margin-bottom: 28px;
  color: var(--cobalt);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.13em;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(38px, 4.6vw, 72px);
  line-height: 1.1;
  letter-spacing: -0.055em;
}

h3 {
  line-height: 1.28;
  letter-spacing: -0.025em;
}

.intro-copy {
  padding-top: 39px;
  color: #4d5758;
  font-size: 17px;
}

.intro-copy p + p {
  margin-top: 22px;
}

.boundary-banner {
  display: grid;
  margin-top: 80px;
  padding: 25px 30px;
  grid-template-columns: minmax(130px, 0.22fr) 1fr;
  gap: 24px;
  align-items: center;
  border-radius: var(--radius-md);
  background: var(--cobalt-soft);
  color: #173164;
}

.boundary-banner strong {
  font-size: 13px;
  letter-spacing: 0.08em;
}

.boundary-banner p {
  font-size: 15px;
}

.dark-section,
.security-section {
  background: var(--teal-950);
  color: var(--white);
}

.section-head {
  margin-bottom: 70px;
}

.section-head > p {
  padding-top: 44px;
  color: var(--muted);
  font-size: 16px;
}

.light-head > p {
  color: rgba(255, 255, 255, 0.62);
}

.light-head .section-number,
.security-section .section-number {
  color: #7facff;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}

.capability-card {
  min-height: 340px;
  display: flex;
  padding: 30px;
  grid-column: span 4;
  flex-direction: column;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.055);
}

.capability-card:nth-child(1),
.capability-card:nth-child(5) {
  grid-column: span 5;
}

.capability-card:nth-child(2),
.capability-card:nth-child(6) {
  grid-column: span 7;
}

.capability-card.accent-blue {
  background: var(--cobalt);
}

.capability-card.accent-amber {
  background: var(--amber);
  color: var(--teal-950);
}

.card-index {
  display: block;
  margin-bottom: auto;
  color: rgba(255, 255, 255, 0.55);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
}

.accent-amber .card-index {
  color: rgba(4, 31, 34, 0.65);
}

.capability-card h3 {
  margin: 46px 0 12px;
  font-size: clamp(24px, 2vw, 34px);
}

.capability-card p {
  max-width: 540px;
  margin-bottom: 26px;
  color: rgba(255, 255, 255, 0.67);
}

.accent-amber p {
  color: rgba(4, 31, 34, 0.73);
}

.status-pill {
  align-self: flex-start;
  padding: 5px 10px;
  border: 1px solid currentColor;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.68);
  font-size: 11px;
}

.accent-amber .status-pill {
  color: rgba(4, 31, 34, 0.76);
}

.scenario-route {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid var(--graphite);
  border-bottom: 1px solid var(--graphite);
}

.scenario-route article {
  min-height: 330px;
  padding: 28px 20px 34px;
  border-right: 1px solid var(--line);
}

.scenario-route article:last-child {
  border-right: 0;
}

.scenario-route span {
  display: block;
  min-height: 96px;
  color: var(--cobalt);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
}

.scenario-route h3 {
  margin-bottom: 14px;
  font-size: 23px;
}

.scenario-route p {
  color: var(--muted);
  font-size: 14px;
}

.chain-section {
  background: var(--clay);
}

.chain-layout {
  display: grid;
  grid-template-columns: minmax(310px, 0.76fr) minmax(560px, 1.24fr);
  gap: clamp(60px, 9vw, 150px);
  align-items: start;
}

.chain-title-block {
  position: sticky;
  top: calc(var(--header-height) + 40px);
}

.chain-title-block h2 {
  margin-bottom: 34px;
}

.chain-title-block > p:last-child {
  max-width: 540px;
  color: var(--muted);
}

.chain-ledger {
  border-top: 1px solid var(--graphite);
}

.chain-ledger > div {
  display: grid;
  padding: 29px 0;
  grid-template-columns: 110px minmax(190px, 1fr) minmax(170px, 0.8fr);
  gap: 22px;
  align-items: center;
  border-bottom: 1px solid #c8c6bd;
}

.chain-ledger span {
  color: var(--cobalt);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.chain-ledger strong {
  font-size: 19px;
}

.chain-ledger em {
  color: var(--muted);
  font-size: 13px;
  font-style: normal;
  text-align: right;
}

.path-board {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--white);
}

.path-step {
  display: grid;
  min-height: 250px;
  padding: 38px;
  grid-template-columns: 70px 1fr;
  gap: 18px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.path-step:nth-child(even) {
  border-right: 0;
}

.path-step:nth-child(n+3) {
  border-bottom: 0;
}

.step-num {
  width: 48px;
  height: 48px;
  display: grid;
  border-radius: 50%;
  background: var(--teal-900);
  color: var(--white);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  place-items: center;
}

.path-step h3 {
  margin-bottom: 14px;
  font-size: 26px;
}

.path-step p {
  color: var(--muted);
}

.knowledge-pair {
  display: grid;
  margin-top: 24px;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.knowledge-pair article {
  min-height: 300px;
  padding: 38px;
  border-radius: var(--radius-lg);
  background: var(--clay);
}

.knowledge-pair article:nth-child(2),
.knowledge-pair article:nth-child(3) {
  background: #e7edf9;
}

.topic-tag {
  display: block;
  margin-bottom: 66px;
  color: var(--cobalt);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  font-weight: 700;
}

.knowledge-pair h3 {
  margin-bottom: 14px;
  font-size: 29px;
}

.knowledge-pair p {
  color: var(--muted);
}

.security-section {
  position: relative;
  overflow: hidden;
}

.security-section::before {
  position: absolute;
  top: -200px;
  right: -120px;
  width: 600px;
  height: 600px;
  border: 1px solid rgba(40, 89, 217, 0.35);
  border-radius: 50%;
  content: "";
  box-shadow: 0 0 0 80px rgba(40, 89, 217, 0.08), 0 0 0 160px rgba(40, 89, 217, 0.04);
}

.security-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(340px, 0.82fr) minmax(520px, 1.18fr);
  gap: 24px;
}

.security-lead {
  min-height: 590px;
  display: flex;
  padding: clamp(36px, 4vw, 64px);
  flex-direction: column;
  justify-content: flex-end;
  border-radius: var(--radius-xl);
  background: var(--cobalt);
}

.signal-dot {
  width: 22px;
  height: 22px;
  margin-bottom: auto;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 8px rgba(242, 162, 59, 0.16);
}

.security-overline {
  color: rgba(255, 255, 255, 0.62);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.12em;
}

.security-lead h3 {
  max-width: 590px;
  margin-bottom: 22px;
  font-size: clamp(34px, 3.4vw, 54px);
  line-height: 1.08;
}

.security-lead > p:last-child {
  color: rgba(255, 255, 255, 0.76);
}

.risk-list {
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.035);
}

.risk-list article {
  display: grid;
  min-height: 147px;
  padding: 28px 32px;
  grid-template-columns: 60px 1fr;
  gap: 18px;
  border-bottom: 1px solid var(--line-dark);
}

.risk-list article:last-child {
  border-bottom: 0;
}

.risk-list span {
  color: var(--amber);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
}

.risk-list h3 {
  margin-bottom: 7px;
  font-size: 21px;
}

.risk-list p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
}

.client-matrix {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--white);
}

.client-matrix article {
  min-height: 260px;
  padding: 30px 24px;
  border-right: 1px solid var(--line);
}

.client-matrix article:last-child {
  border-right: 0;
}

.client-matrix span,
.client-matrix strong {
  display: block;
}

.client-matrix span {
  min-height: 86px;
  color: var(--cobalt);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
}

.client-matrix strong {
  margin-bottom: 14px;
  font-size: 22px;
}

.client-matrix p {
  color: var(--muted);
  font-size: 13px;
}

.verification-flow {
  display: grid;
  margin-top: 24px;
  padding: 44px;
  grid-template-columns: 0.7fr 1.3fr;
  gap: clamp(40px, 7vw, 100px);
  border-radius: var(--radius-xl);
  background: var(--amber);
  color: var(--teal-950);
}

.flow-title > span,
.release-head > span {
  display: block;
  margin-bottom: 50px;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.flow-title h3 {
  font-size: clamp(29px, 3vw, 44px);
}

.verification-flow ol {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(4, 31, 34, 0.35);
}

.verification-flow li {
  display: grid;
  padding: 17px 0;
  grid-template-columns: 54px 1fr;
  gap: 14px;
  border-bottom: 1px solid rgba(4, 31, 34, 0.25);
  font-size: 14px;
  font-weight: 600;
}

.verification-flow li span {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
}

.release-log {
  margin-top: 84px;
}

.release-head {
  display: grid;
  padding-bottom: 22px;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--graphite);
}

.release-head > span {
  margin-bottom: 0;
  color: var(--cobalt);
}

.release-head h3 {
  margin: 0;
  font-size: 27px;
}

.release-log article {
  display: grid;
  padding: 32px 0;
  grid-template-columns: 0.7fr 1.7fr 0.3fr;
  gap: 30px;
  align-items: start;
  border-bottom: 1px solid var(--line);
}

.release-log time {
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 12px;
}

.release-log strong {
  display: block;
  margin-bottom: 7px;
  font-size: 18px;
}

.release-log p {
  color: var(--muted);
  font-size: 14px;
}

.log-type {
  padding: 5px 8px;
  border-radius: 999px;
  background: var(--cobalt-soft);
  color: var(--cobalt);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  text-align: center;
}

.log-type.muted {
  background: #e7e7e4;
  color: var(--muted);
}

.alert-section {
  background: var(--cobalt);
  color: var(--white);
}

.alert-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(60px, 10vw, 160px);
}

.alert-layout .section-number {
  color: var(--amber-soft);
}

.alert-copy {
  padding-top: 44px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
}

.alert-copy p + p {
  margin-top: 24px;
}

.faq-list {
  border-top: 1px solid var(--graphite);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  display: grid;
  padding: 29px 0;
  grid-template-columns: 1fr 30px;
  gap: 20px;
  align-items: center;
  font-size: clamp(19px, 1.5vw, 24px);
  font-weight: 650;
  list-style: none;
  cursor: pointer;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary span {
  color: var(--cobalt);
  font-size: 28px;
  font-weight: 300;
  text-align: center;
  transition: transform 160ms ease;
}

.faq-list details[open] summary span {
  transform: rotate(45deg);
}

.faq-list details p {
  max-width: 980px;
  margin: -6px 0 30px;
  color: var(--muted);
}

.official-section {
  background: var(--clay);
}

.official-grid {
  display: grid;
  grid-template-columns: minmax(340px, 0.82fr) minmax(540px, 1.18fr);
  gap: clamp(60px, 9vw, 148px);
}

.official-title-block h2 {
  margin-bottom: 30px;
}

.official-title-block > p:last-child {
  max-width: 560px;
  color: var(--muted);
}

.official-ledger {
  margin: 0;
  border-top: 1px solid var(--graphite);
}

.official-ledger div {
  display: grid;
  padding: 22px 0;
  grid-template-columns: minmax(120px, 0.38fr) 1fr;
  gap: 24px;
  border-bottom: 1px solid #c8c6bd;
}

.official-ledger dt {
  color: var(--muted);
  font-size: 13px;
}

.official-ledger dd {
  margin: 0;
  font-weight: 600;
}

.trust-note {
  display: grid;
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  padding: 25px 30px;
  grid-template-columns: 170px 1fr;
  gap: 24px;
  align-items: center;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  background: var(--teal-900);
  color: var(--white);
}

.trust-note strong {
  color: var(--amber);
  font-size: 13px;
}

.trust-note p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.site-footer {
  background: var(--teal-950);
  color: var(--white);
}

.footer-inner {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  padding: 72px 0 38px;
}

.footer-brand {
  display: flex;
  margin-bottom: 52px;
  gap: 16px;
  align-items: center;
}

.footer-brand img {
  width: 52px;
  height: 52px;
  object-fit: contain;
}

.footer-brand div {
  display: flex;
  flex-direction: column;
}

.footer-brand strong {
  font-size: 25px;
  line-height: 1;
}

.footer-brand span {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.46);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.footer-copy {
  display: grid;
  padding: 31px 0;
  grid-template-columns: 0.7fr 1.15fr 1.35fr;
  gap: 44px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  color: rgba(255, 255, 255, 0.55);
  font-size: 12px;
}

.footer-meta {
  display: flex;
  padding-top: 28px;
  justify-content: space-between;
  gap: 20px;
  color: rgba(255, 255, 255, 0.42);
  font-size: 11px;
}

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

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

@media (max-width: 1180px) {
  .header-inner {
    width: min(calc(100% - 32px), var(--max));
  }

  .menu-toggle {
    display: block;
  }

  .primary-nav {
    position: fixed;
    top: var(--header-height);
    right: 16px;
    left: 16px;
    display: none;
    max-height: calc(100vh - var(--header-height) - 16px);
    padding: 14px;
    flex-direction: column;
    gap: 0;
    overflow-y: auto;
    border: 1px solid var(--line-dark);
    border-radius: 0 0 20px 20px;
    background: #062d30;
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.28);
  }

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

  .primary-nav a {
    min-height: 53px;
    padding: 0 14px;
    border-bottom: 1px solid var(--line-dark);
  }

  .primary-nav a:last-child {
    border-bottom: 0;
  }

  .primary-nav a::after {
    top: 10px;
    right: auto;
    bottom: 10px;
    left: 0;
    width: 3px;
    height: auto;
    transform: scaleY(0);
    transform-origin: top;
  }

  .primary-nav a:hover::after,
  .primary-nav a:focus-visible::after,
  .primary-nav a[aria-current="page"]::after {
    transform: scaleY(1);
  }

  .hero-grid {
    min-height: 620px;
    grid-template-columns: minmax(0, 1.1fr) minmax(420px, 0.9fr);
  }

  .hero-copy {
    padding: 72px 48px;
  }

  .system-rail > div {
    padding: 24px;
  }

  .scenario-route {
    grid-template-columns: repeat(3, 1fr);
  }

  .scenario-route article {
    min-height: 280px;
    border-bottom: 1px solid var(--line);
  }

  .scenario-route article:nth-child(3) {
    border-right: 0;
  }

  .scenario-route article:nth-child(n+4) {
    border-bottom: 0;
  }

  .client-matrix {
    grid-template-columns: repeat(3, 1fr);
  }

  .client-matrix article {
    border-bottom: 1px solid var(--line);
  }

  .client-matrix article:nth-child(3) {
    border-right: 0;
  }

  .client-matrix article:nth-child(n+4) {
    border-bottom: 0;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 72px;
  }

  .hero {
    width: calc(100% - 20px);
    margin-top: 10px;
    border-radius: 24px;
  }

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

  .hero-copy {
    min-height: 580px;
  }

  .hero-media {
    min-height: 420px;
  }

  .system-rail {
    grid-template-columns: repeat(2, 1fr);
  }

  .system-rail > div:nth-child(2) {
    border-right: 0;
  }

  .system-rail > div:nth-child(-n+2) {
    border-bottom: 1px solid var(--line-dark);
  }

  .intro-layout,
  .section-head,
  .chain-layout,
  .security-grid,
  .alert-layout,
  .official-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .section-head > p,
  .intro-copy,
  .alert-copy {
    padding-top: 0;
  }

  .chain-title-block {
    position: static;
  }

  .capability-card,
  .capability-card:nth-child(1),
  .capability-card:nth-child(2),
  .capability-card:nth-child(5),
  .capability-card:nth-child(6) {
    grid-column: span 6;
  }

  .security-lead {
    min-height: 480px;
  }

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

  .flow-title > span {
    margin-bottom: 22px;
  }

  .footer-copy {
    grid-template-columns: 1fr;
    gap: 18px;
  }
}

@media (max-width: 640px) {
  :root {
    --radius-xl: 24px;
    --radius-lg: 20px;
  }

  body {
    font-size: 15px;
  }

  .header-inner,
  .section-pad,
  .breadcrumb,
  .trust-note,
  .footer-inner {
    width: calc(100% - 32px);
  }

  .brand-lockup img {
    width: 40px;
    height: 40px;
  }

  .brand-lockup strong {
    font-size: 18px;
  }

  .brand-lockup span {
    display: none;
  }

  .menu-toggle {
    width: 44px;
    height: 44px;
  }

  .hero-copy {
    min-height: auto;
    padding: 60px 24px 56px;
  }

  .system-label {
    margin-bottom: 34px;
    font-size: 9px;
  }

  .system-label span {
    margin-right: 7px;
    padding: 5px 8px;
  }

  .hero h1 {
    margin-bottom: 24px;
    font-size: clamp(40px, 12vw, 58px);
  }

  .hero-tagline {
    font-size: 19px;
  }

  .hero-intro {
    font-size: 14px;
  }

  .hero-media {
    min-height: 300px;
  }

  .system-rail > div {
    padding: 20px 18px;
  }

  .system-rail small {
    font-size: 10px;
  }

  .section-pad {
    padding-top: 84px;
    padding-bottom: 84px;
  }

  .section-kicker {
    margin-bottom: 38px;
  }

  .section-number {
    margin-bottom: 20px;
  }

  h2 {
    font-size: 39px;
  }

  .section-head {
    margin-bottom: 46px;
  }

  .boundary-banner {
    margin-top: 48px;
    padding: 22px;
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .capability-card,
  .capability-card:nth-child(1),
  .capability-card:nth-child(2),
  .capability-card:nth-child(5),
  .capability-card:nth-child(6) {
    min-height: 310px;
    grid-column: span 12;
  }

  .scenario-route {
    grid-template-columns: 1fr;
  }

  .scenario-route article,
  .scenario-route article:nth-child(3),
  .scenario-route article:nth-child(n+4) {
    display: grid;
    min-height: auto;
    padding: 25px 0;
    grid-template-columns: 48px 1fr;
    column-gap: 16px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .scenario-route article:last-child {
    border-bottom: 0;
  }

  .scenario-route span {
    min-height: 0;
    grid-row: span 2;
  }

  .scenario-route h3,
  .scenario-route p {
    grid-column: 2;
  }

  .chain-ledger > div {
    padding: 23px 0;
    grid-template-columns: 88px 1fr;
    gap: 14px;
  }

  .chain-ledger em {
    grid-column: 2;
    text-align: left;
  }

  .path-board,
  .knowledge-pair {
    grid-template-columns: 1fr;
  }

  .path-step,
  .path-step:nth-child(even),
  .path-step:nth-child(n+3) {
    padding: 28px 22px;
    grid-template-columns: 52px 1fr;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .path-step:last-child {
    border-bottom: 0;
  }

  .knowledge-pair article {
    min-height: auto;
    padding: 28px 24px;
  }

  .topic-tag {
    margin-bottom: 40px;
  }

  .security-lead {
    min-height: 500px;
    padding: 34px 26px;
  }

  .risk-list article {
    padding: 25px 22px;
    grid-template-columns: 48px 1fr;
  }

  .client-matrix {
    grid-template-columns: 1fr;
  }

  .client-matrix article,
  .client-matrix article:nth-child(3),
  .client-matrix article:nth-child(n+4) {
    min-height: auto;
    padding: 25px 22px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .client-matrix span {
    min-height: 36px;
  }

  .verification-flow {
    padding: 29px 23px;
  }

  .release-log {
    margin-top: 62px;
  }

  .release-head {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .release-log article {
    grid-template-columns: 1fr auto;
    gap: 16px;
  }

  .release-log article > div {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .release-log .log-type {
    grid-column: 2;
    grid-row: 1;
  }

  .faq-list summary {
    padding: 24px 0;
    font-size: 18px;
  }

  .official-ledger div {
    grid-template-columns: 1fr;
    gap: 5px;
  }

  .trust-note {
    padding: 24px;
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .footer-meta {
    flex-direction: column;
  }
}

@media print {
  .site-header,
  .menu-toggle {
    position: static;
  }

  .primary-nav {
    display: none;
  }

  .hero,
  .dark-section,
  .security-section,
  .alert-section,
  .site-footer {
    color: #000;
    background: #fff;
  }
}