:root {
  --navy-950: #050f24;
  --navy-900: #07152f;
  --navy-800: #0c1f47;
  --navy-700: #153264;
  --gold-500: #c5a44e;
  --gold-400: #d8bd72;
  --gold-200: #eee0b8;
  --ink: #111a2d;
  --muted: #647087;
  --line: #dfe3ea;
  --surface: #ffffff;
  --surface-warm: #f7f5ef;
  --surface-cool: #f3f6fa;
  --shell: min(1180px, calc(100% - 48px));
  --header-height: 84px;
  color: var(--ink);
  font-family:
    Inter, "SF Pro Display", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--surface);
  color: var(--ink);
  line-height: 1.65;
}

body,
button,
a {
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font: inherit;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--gold-400);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 4px;
  background: var(--gold-500);
  color: var(--navy-950);
  font-weight: 700;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-height);
  border-bottom: 1px solid transparent;
  color: #fff;
  transition:
    height 220ms ease,
    background-color 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease;
}

.site-header.is-scrolled {
  height: 70px;
  border-color: rgba(255, 255, 255, 0.1);
  background: rgba(5, 15, 36, 0.94);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.17);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  height: 100%;
  align-items: center;
  justify-content: space-between;
}

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

.brand img {
  width: 42px;
  height: 42px;
}

.brand-copy {
  display: grid;
  gap: 1px;
}

.brand-copy strong {
  color: #fff;
  font-size: 19px;
  line-height: 1.2;
  letter-spacing: 0.12em;
}

.brand-copy small {
  color: rgba(255, 255, 255, 0.58);
  font-size: 8px;
  line-height: 1.2;
  letter-spacing: 0.17em;
}

.site-menu {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 14px;
}

.site-menu > a:not(.nav-cta) {
  position: relative;
  color: rgba(255, 255, 255, 0.76);
  transition: color 180ms ease;
}

.site-menu > a:not(.nav-cta)::after {
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 1px;
  background: var(--gold-500);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-menu > a:not(.nav-cta):hover {
  color: #fff;
}

.site-menu > a:not(.nav-cta):hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-cta {
  padding: 11px 17px;
  border: 1px solid rgba(197, 164, 78, 0.7);
  color: var(--gold-200);
  font-weight: 700;
  transition:
    background-color 180ms ease,
    color 180ms ease;
}

.nav-cta:hover {
  background: var(--gold-500);
  color: var(--navy-950);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 1px;
  margin: 6px 0;
  background: #fff;
  transition:
    transform 180ms ease,
    opacity 180ms ease;
}

.hero {
  position: relative;
  display: grid;
  min-height: 780px;
  overflow: hidden;
  align-items: center;
  background:
    radial-gradient(circle at 78% 50%, rgba(41, 83, 148, 0.35), transparent 31%),
    linear-gradient(135deg, var(--navy-950), var(--navy-900) 57%, #0d2858);
  color: #fff;
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 180px;
  background: linear-gradient(transparent, rgba(3, 9, 22, 0.48));
  content: "";
  pointer-events: none;
}

.hero-grid,
.contact-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: linear-gradient(to right, transparent, #000 24%, #000 80%, transparent);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(1px);
  pointer-events: none;
}

.hero-glow-one {
  top: 18%;
  right: -9%;
  width: 430px;
  height: 430px;
  border: 1px solid rgba(197, 164, 78, 0.2);
  box-shadow:
    0 0 100px rgba(197, 164, 78, 0.08),
    inset 0 0 80px rgba(62, 110, 188, 0.14);
}

.hero-glow-two {
  right: 25%;
  bottom: -190px;
  width: 360px;
  height: 360px;
  border: 1px solid rgba(89, 137, 205, 0.18);
}

.hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(420px, 0.96fr);
  gap: 56px;
  align-items: center;
  padding: 150px 0 110px;
}

.hero-copy {
  max-width: 660px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--gold-400);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.24em;
}

.eyebrow.dark {
  color: #9b7d31;
}

.hero h1 {
  margin: 0;
  font-size: clamp(54px, 5.4vw, 78px);
  font-weight: 500;
  line-height: 1.13;
  letter-spacing: -0.055em;
}

.hero-summary {
  max-width: 615px;
  margin: 30px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 18px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 700;
  transition:
    transform 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--gold-500);
  color: var(--navy-950);
}

.button-primary:hover {
  background: var(--gold-400);
}

.button-ghost {
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
}

.button-ghost:hover {
  border-color: rgba(255, 255, 255, 0.65);
  background: rgba(255, 255, 255, 0.06);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 56px 0 0;
}

.hero-facts div {
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.hero-facts dt {
  color: var(--gold-400);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.13em;
}

.hero-facts dd {
  margin: 7px 0 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 13px;
}

.hero-visual {
  position: relative;
  width: min(100%, 520px);
  aspect-ratio: 1;
  justify-self: end;
}

.network-orbit {
  position: absolute;
  inset: 50%;
  border: 1px solid rgba(197, 164, 78, 0.28);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.orbit-one {
  width: 82%;
  height: 38%;
  transform: translate(-50%, -50%) rotate(16deg);
}

.orbit-two {
  width: 76%;
  height: 47%;
  transform: translate(-50%, -50%) rotate(-25deg);
}

.orbit-three {
  width: 48%;
  height: 88%;
  transform: translate(-50%, -50%) rotate(68deg);
}

.network-core {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 154px;
  height: 154px;
  place-items: center;
  border: 1px solid rgba(197, 164, 78, 0.65);
  border-radius: 50%;
  background: rgba(7, 21, 47, 0.8);
  box-shadow:
    0 0 0 18px rgba(197, 164, 78, 0.04),
    0 0 80px rgba(197, 164, 78, 0.13);
  transform: translate(-50%, -50%);
}

.network-core img {
  width: 58px;
  height: 58px;
}

.network-core span {
  margin-top: -18px;
  color: var(--gold-200);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.network-node {
  position: absolute;
  width: 11px;
  height: 11px;
  border: 2px solid var(--navy-900);
  border-radius: 50%;
  background: var(--gold-500);
  box-shadow: 0 0 18px rgba(197, 164, 78, 0.7);
  animation: node-pulse 2.8s ease-in-out infinite;
}

.node-one { top: 22%; left: 19%; }
.node-two { top: 17%; right: 25%; animation-delay: 0.4s; }
.node-three { top: 47%; right: 7%; animation-delay: 0.8s; }
.node-four { right: 22%; bottom: 17%; animation-delay: 1.2s; }
.node-five { bottom: 22%; left: 18%; animation-delay: 1.6s; }
.node-six { top: 48%; left: 5%; animation-delay: 2s; }

.network-label {
  position: absolute;
  color: rgba(255, 255, 255, 0.55);
  font-size: 9px;
  letter-spacing: 0.18em;
}

.label-one { top: 15%; left: 8%; }
.label-two { top: 23%; right: 2%; }
.label-three { right: 7%; bottom: 15%; }
.label-four { bottom: 13%; left: 3%; }

.scroll-cue {
  position: absolute;
  z-index: 3;
  bottom: 26px;
  left: 50%;
  display: grid;
  justify-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.46);
  font-size: 9px;
  letter-spacing: 0.16em;
  transform: translateX(-50%);
}

.scroll-cue i {
  width: 1px;
  height: 28px;
  background: linear-gradient(var(--gold-500), transparent);
}

.section {
  padding: 128px 0;
}

.section-intro {
  background: var(--surface-warm);
}

.intro-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 90px;
  align-items: start;
}

.section-heading h2,
.workflow-heading h2,
.contact-section h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(36px, 4vw, 54px);
  font-weight: 500;
  line-height: 1.24;
  letter-spacing: -0.04em;
}

.keep-line {
  white-space: nowrap;
}

.section-heading > p:last-child {
  max-width: 650px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: 17px;
}

.section-heading.centered {
  max-width: 800px;
  margin: 0 auto 66px;
  text-align: center;
}

.intro-copy {
  padding-top: 40px;
  border-top: 1px solid #d7d2c5;
}

.intro-copy p {
  margin: 0;
  color: #596277;
  font-size: 17px;
}

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

.platform-stage {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.7fr 1fr;
  min-height: 300px;
  margin-top: 84px;
  overflow: hidden;
  align-items: center;
  border: 1px solid #d8d2c3;
  background:
    linear-gradient(90deg, transparent 49.85%, rgba(197, 164, 78, 0.18) 50%, transparent 50.15%),
    #fff;
  box-shadow: 0 22px 60px rgba(12, 31, 71, 0.08);
}

.platform-stage::before,
.platform-stage::after {
  position: absolute;
  top: 50%;
  width: 17%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-500));
  content: "";
}

.platform-stage::before { left: 18%; }
.platform-stage::after { right: 18%; transform: rotate(180deg); }

.platform-rail {
  display: grid;
  gap: 22px;
  padding: 38px;
  color: var(--muted);
  font-size: 13px;
}

.platform-rail span {
  position: relative;
  padding-left: 18px;
}

.platform-rail span::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-500);
  content: "";
}

.platform-core {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  padding: 34px 28px;
  background: var(--navy-900);
  color: #fff;
}

.platform-mark {
  display: grid;
  width: 60px;
  height: 60px;
  place-items: center;
  border: 1px solid var(--gold-500);
  color: var(--gold-500);
  font-family: Georgia, serif;
  font-size: 31px;
  transform: rotate(45deg);
}

.platform-mark > span,
.shield-core > span {
  display: block;
  transform: rotate(-45deg);
}

.platform-core div {
  display: grid;
  gap: 5px;
}

.platform-core small {
  color: var(--gold-400);
  font-size: 9px;
  letter-spacing: 0.15em;
}

.platform-core strong {
  font-size: 22px;
  font-weight: 500;
}

.platform-services {
  position: absolute;
  right: 18%;
  bottom: 24px;
  left: 18%;
  display: flex;
  z-index: 3;
  justify-content: center;
  gap: 12px;
}

.platform-services span {
  padding: 7px 10px;
  border: 1px solid #ded7c4;
  background: #fff;
  color: #5d6677;
  font-size: 11px;
}

.section-capabilities {
  background: #fff;
}

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

.capability-item {
  display: grid;
  grid-template-columns: 88px minmax(220px, 0.7fr) minmax(300px, 1.3fr);
  gap: 36px;
  align-items: center;
  padding: 34px 12px;
  border-bottom: 1px solid var(--line);
  transition:
    background-color 180ms ease,
    padding 180ms ease;
}

.capability-item:hover {
  padding-inline: 24px;
  background: var(--surface-cool);
}

.capability-number {
  color: var(--gold-500);
  font-family: Georgia, serif;
  font-size: 23px;
}

.capability-item small {
  color: #9a7e35;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.capability-item h3 {
  margin: 4px 0 0;
  color: var(--navy-800);
  font-size: 25px;
  font-weight: 500;
}

.capability-item p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.section-developers {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 18%, rgba(42, 84, 149, 0.28), transparent 28%),
    var(--navy-950);
  color: #fff;
}

.developer-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000, transparent 82%);
}

.section-developers .shell {
  position: relative;
  z-index: 2;
}

.developer-heading {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 90px;
  align-items: end;
}

.developer-heading h2 {
  max-width: 650px;
  margin: 0;
  font-size: clamp(38px, 4vw, 56px);
  font-weight: 500;
  line-height: 1.22;
  letter-spacing: -0.04em;
}

.developer-intro {
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.developer-intro > p {
  margin: 0;
  color: rgba(255, 255, 255, 0.63);
  font-size: 16px;
}

.developer-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 25px;
}

.developer-badges span {
  padding: 7px 10px;
  border: 1px solid rgba(197, 164, 78, 0.4);
  color: var(--gold-200);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
}

.api-capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 72px;
  background: rgba(255, 255, 255, 0.12);
}

.api-capability {
  min-width: 0;
  padding: 34px 30px 32px;
  background: rgba(7, 21, 47, 0.9);
}

.api-card-heading {
  display: flex;
  gap: 17px;
  align-items: flex-start;
}

.api-card-heading > span {
  color: var(--gold-500);
  font-family: Georgia, serif;
  font-size: 18px;
}

.api-card-heading small,
.developer-cta small {
  color: var(--gold-400);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.api-card-heading h3 {
  margin: 4px 0 0;
  font-size: 22px;
  font-weight: 500;
}

.api-capability > p {
  min-height: 74px;
  margin: 24px 0 26px;
  color: rgba(255, 255, 255, 0.55);
  font-size: 14px;
}

.endpoint-list {
  display: grid;
  gap: 10px;
}

.endpoint-list code {
  display: flex;
  min-width: 0;
  align-items: flex-start;
  gap: 9px;
  padding: 11px 12px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(2, 9, 23, 0.7);
  color: rgba(255, 255, 255, 0.7);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 10px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.endpoint-list code span {
  flex: 0 0 auto;
  color: var(--gold-400);
  font-weight: 700;
}

.developer-journey {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 64px;
  margin-top: 70px;
  padding-top: 46px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.journey-heading h3 {
  max-width: 350px;
  margin: 0;
  font-size: 30px;
  font-weight: 500;
  line-height: 1.35;
}

.developer-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.developer-steps li > span {
  color: var(--gold-400);
  font-family: Georgia, serif;
  font-size: 17px;
}

.developer-steps strong {
  display: block;
  margin-top: 18px;
  font-size: 16px;
  font-weight: 500;
}

.developer-steps p {
  margin: 9px 0 0;
  color: rgba(255, 255, 255, 0.48);
  font-size: 12px;
}

.developer-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin-top: 66px;
  padding: 30px 34px;
  border: 1px solid rgba(197, 164, 78, 0.35);
  background: rgba(197, 164, 78, 0.06);
}

.developer-cta > div {
  display: grid;
  gap: 6px;
}

.developer-cta strong {
  font-size: 17px;
  font-weight: 500;
}

.developer-cta a {
  flex: 0 0 auto;
  padding: 13px 17px;
  background: var(--gold-500);
  color: var(--navy-950);
  font-size: 13px;
  font-weight: 700;
  transition:
    background-color 180ms ease,
    transform 180ms ease;
}

.developer-cta a:hover {
  background: var(--gold-400);
  transform: translateY(-2px);
}

.section-workflow {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 25%, rgba(32, 75, 137, 0.37), transparent 27%),
    var(--navy-900);
  color: #fff;
}

.section-workflow::after {
  position: absolute;
  top: -150px;
  right: -160px;
  width: 560px;
  height: 560px;
  border: 1px solid rgba(197, 164, 78, 0.15);
  border-radius: 50%;
  content: "";
}

.workflow-heading {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 80px;
  align-items: end;
}

.workflow-heading h2,
.contact-section h2 {
  color: #fff;
}

.workflow-heading > p {
  margin: 0 0 8px;
  color: rgba(255, 255, 255, 0.56);
  font-size: 16px;
}

.workflow-list {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 78px 0 0;
  padding: 0;
  list-style: none;
}

.workflow-list::before {
  position: absolute;
  top: 32px;
  right: 8%;
  left: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(197, 164, 78, 0.8), transparent);
  content: "";
}

.workflow-list li {
  position: relative;
  padding: 0 26px;
  text-align: center;
}

.workflow-list > li > span {
  position: relative;
  z-index: 2;
  display: grid;
  width: 64px;
  height: 64px;
  margin: 0 auto 29px;
  place-items: center;
  border: 1px solid rgba(197, 164, 78, 0.8);
  border-radius: 50%;
  background: var(--navy-900);
  color: var(--gold-400);
  font-family: Georgia, serif;
  font-size: 18px;
}

.workflow-list small {
  color: var(--gold-400);
  font-size: 8px;
  letter-spacing: 0.13em;
}

.workflow-list h3 {
  margin: 7px 0 10px;
  font-size: 21px;
  font-weight: 500;
}

.workflow-list p {
  margin: 0;
  color: rgba(255, 255, 255, 0.56);
  font-size: 14px;
}

.section-security {
  background: var(--surface-cool);
}

.security-layout {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 100px;
  align-items: center;
}

.security-visual {
  position: relative;
  display: grid;
  aspect-ratio: 1;
  place-items: center;
}

.shield-rings,
.shield-rings span {
  position: absolute;
  inset: 50%;
  border: 1px solid rgba(12, 31, 71, 0.15);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.shield-rings {
  width: 92%;
  height: 92%;
}

.shield-rings span:nth-child(1) { width: 72%; height: 72%; }
.shield-rings span:nth-child(2) { width: 45%; height: 45%; border-color: rgba(197, 164, 78, 0.45); }
.shield-rings span:nth-child(3) { width: 16%; height: 16%; background: rgba(197, 164, 78, 0.12); }

.shield-core {
  position: relative;
  z-index: 2;
  display: grid;
  width: 112px;
  height: 112px;
  place-items: center;
  background: var(--navy-800);
  color: var(--gold-500);
  font-family: Georgia, serif;
  font-size: 58px;
  transform: rotate(45deg);
  box-shadow: 0 24px 70px rgba(12, 31, 71, 0.22);
}

.security-visual > small {
  position: absolute;
  bottom: 12%;
  color: #8a7440;
  font-size: 9px;
  letter-spacing: 0.16em;
}

.security-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin-top: 48px;
  background: #dbe1e9;
}

.security-grid article {
  min-height: 190px;
  padding: 28px;
  background: #fff;
}

.security-grid span {
  color: var(--gold-500);
  font-family: Georgia, serif;
}

.security-grid h3 {
  margin: 28px 0 9px;
  color: var(--navy-800);
  font-size: 20px;
  font-weight: 500;
}

.security-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.section-onboarding {
  background: #fff;
}

.onboarding-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  list-style: none;
}

.onboarding-steps li {
  min-height: 250px;
  padding: 34px 28px;
  border-right: 1px solid var(--line);
}

.onboarding-steps li:last-child {
  border-right: 0;
}

.onboarding-steps span {
  color: var(--gold-500);
  font-family: Georgia, serif;
  font-size: 20px;
}

.onboarding-steps h3 {
  margin: 72px 0 10px;
  color: var(--navy-800);
  font-size: 23px;
  font-weight: 500;
}

.onboarding-steps p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.contact-section {
  position: relative;
  overflow: hidden;
  padding: 116px 0;
  background:
    radial-gradient(circle at 72% 45%, rgba(42, 84, 149, 0.36), transparent 32%),
    var(--navy-950);
  color: #fff;
}

.contact-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 110px;
  align-items: end;
}

.contact-copy {
  padding: 38px 0 4px;
  border-top: 1px solid rgba(255, 255, 255, 0.17);
}

.contact-copy p {
  margin: 0 0 28px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 17px;
}

.contact-email {
  display: inline-flex;
  min-height: 49px;
  align-items: center;
  padding: 0 22px;
  border: 1px solid rgba(197, 164, 78, 0.62);
  color: var(--gold-200);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition:
    background-color 180ms ease,
    color 180ms ease;
}

.contact-email:hover {
  background: var(--gold-500);
  color: var(--navy-950);
}

.contact-copy small {
  display: block;
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.4);
  font-size: 12px;
}

.site-footer {
  background: #030a18;
  color: rgba(255, 255, 255, 0.58);
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
  padding: 48px 0 38px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
}

.footer-brand img {
  width: 46px;
  height: 46px;
}

.footer-entity {
  display: grid;
  gap: 4px;
  text-align: right;
}

.footer-entity strong {
  color: rgba(255, 255, 255, 0.78);
  font-size: 15px;
  font-weight: 500;
}

.footer-entity span {
  font-size: 10px;
  letter-spacing: 0.08em;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  padding: 22px 0 28px;
  font-size: 11px;
}

.reveal {
  opacity: 1;
  transform: none;
}

.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 650ms ease,
    transform 650ms ease;
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes node-pulse {
  0%, 100% { transform: scale(0.86); opacity: 0.62; }
  50% { transform: scale(1.18); opacity: 1; }
}

@media (max-width: 1024px) {
  :root {
    --shell: min(100% - 40px, 920px);
  }

  .site-menu {
    gap: 19px;
    font-size: 13px;
  }

  .hero-layout {
    grid-template-columns: 1fr 0.78fr;
    gap: 22px;
  }

  .hero-visual {
    transform: scale(0.9);
    transform-origin: right center;
  }

  .platform-stage {
    grid-template-columns: 0.8fr 1.6fr 0.8fr;
  }

  .platform-rail {
    padding: 26px;
  }

  .security-layout {
    gap: 54px;
  }

  .developer-heading {
    gap: 54px;
  }

  .api-capability {
    padding-inline: 22px;
  }

  .developer-journey {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 72px;
    --shell: min(100% - 32px, 680px);
  }

  .site-header,
  .site-header.is-scrolled {
    height: var(--header-height);
  }

  .menu-toggle {
    display: block;
  }

  .menu-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-menu {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    display: grid;
    max-height: 0;
    overflow: hidden;
    gap: 0;
    background: rgba(5, 15, 36, 0.98);
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transition:
      max-height 220ms ease,
      opacity 180ms ease,
      visibility 0s linear 220ms;
  }

  .site-menu.is-open {
    max-height: 560px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
    transition-delay: 0s;
  }

  .site-menu a,
  .site-menu .nav-cta {
    width: var(--shell);
    margin: 0 auto;
    padding: 15px 0;
    border: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.82);
  }

  .site-menu .nav-cta {
    color: var(--gold-400);
  }

  .hero {
    min-height: auto;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    padding: 132px 0 102px;
  }

  .hero h1 {
    font-size: clamp(47px, 11vw, 68px);
  }

  .hero-visual {
    width: min(86vw, 480px);
    margin: -10px auto 0;
    justify-self: center;
    transform: none;
  }

  .scroll-cue {
    display: none;
  }

  .section {
    padding: 92px 0;
  }

  .intro-layout,
  .developer-heading,
  .workflow-heading,
  .security-layout,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .intro-copy {
    padding-top: 28px;
  }

  .platform-stage {
    grid-template-columns: 1fr;
    gap: 0;
    min-height: auto;
    padding-bottom: 88px;
  }

  .platform-stage::before,
  .platform-stage::after {
    display: none;
  }

  .platform-rail {
    grid-template-columns: repeat(3, 1fr);
    padding: 25px 22px;
    text-align: center;
  }

  .platform-rail span {
    padding: 0;
  }

  .platform-rail span::before {
    display: none;
  }

  .platform-rail-bottom {
    display: none;
  }

  .platform-services {
    right: 20px;
    bottom: 20px;
    left: 20px;
    flex-wrap: wrap;
  }

  .capability-item {
    grid-template-columns: 58px minmax(180px, 0.8fr) 1.2fr;
    gap: 22px;
  }

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

  .api-capability:last-child {
    grid-column: 1 / -1;
  }

  .api-capability > p {
    min-height: 0;
  }

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

  .developer-cta {
    align-items: flex-start;
    flex-direction: column;
  }

  .workflow-list,
  .onboarding-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .workflow-list::before {
    display: none;
  }

  .workflow-list li {
    padding: 24px 20px 36px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .security-visual {
    width: min(76vw, 440px);
    margin: 0 auto;
  }

  .onboarding-steps li:nth-child(2) {
    border-right: 0;
  }

  .onboarding-steps li:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .contact-layout {
    gap: 58px;
  }

  .footer-top,
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-entity {
    text-align: left;
  }
}

@media (max-width: 480px) {
  :root {
    --shell: calc(100% - 28px);
  }

  .brand-copy strong {
    font-size: 17px;
  }

  .brand-copy small {
    font-size: 7px;
  }

  .hero-layout {
    padding-top: 118px;
  }

  .hero h1 {
    font-size: 44px;
    line-height: 1.16;
  }

  .hero-summary {
    font-size: 16px;
    line-height: 1.8;
  }

  .hero-actions {
    display: grid;
  }

  .button {
    width: 100%;
  }

  .hero-facts {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .hero-facts div {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 14px;
  }

  .hero-facts dd {
    text-align: right;
  }

  .hero-visual {
    width: 100%;
  }

  .network-label {
    font-size: 7px;
  }

  .section {
    padding: 76px 0;
  }

  .section-heading h2,
  .developer-heading h2,
  .workflow-heading h2,
  .contact-section h2 {
    font-size: 35px;
  }

  .keep-line {
    white-space: normal;
  }

  .section-heading.centered {
    margin-bottom: 46px;
    text-align: left;
  }

  .section-heading > p:last-child {
    font-size: 15px;
  }

  .platform-stage {
    margin-top: 58px;
  }

  .platform-rail {
    grid-template-columns: 1fr;
    gap: 9px;
  }

  .platform-core {
    padding: 28px 15px;
  }

  .platform-mark {
    width: 48px;
    height: 48px;
  }

  .platform-core strong {
    font-size: 18px;
  }

  .platform-services span {
    font-size: 9px;
  }

  .capability-item {
    grid-template-columns: 42px 1fr;
    gap: 16px;
    padding: 28px 4px;
  }

  .capability-item p {
    grid-column: 2;
  }

  .capability-item:hover {
    padding-inline: 4px;
  }

  .api-capability-grid,
  .developer-steps {
    grid-template-columns: 1fr;
  }

  .api-capability:last-child {
    grid-column: auto;
  }

  .api-capability {
    padding: 28px 20px;
  }

  .developer-journey {
    gap: 38px;
    margin-top: 52px;
  }

  .developer-cta {
    margin-top: 48px;
    padding: 24px 20px;
  }

  .developer-cta a {
    width: 100%;
    text-align: center;
  }

  .workflow-list,
  .onboarding-steps,
  .security-grid {
    grid-template-columns: 1fr;
  }

  .workflow-list li {
    display: grid;
    grid-template-columns: 64px 1fr;
    gap: 20px;
    text-align: left;
  }

  .workflow-list > li > span {
    margin: 0;
  }

  .security-visual {
    width: 100%;
  }

  .security-grid article {
    min-height: 0;
  }

  .onboarding-steps li,
  .onboarding-steps li:nth-child(2) {
    min-height: 0;
    padding: 27px 7px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .onboarding-steps li:last-child {
    border-bottom: 0;
  }

  .onboarding-steps h3 {
    margin-top: 28px;
  }

  .contact-section {
    padding: 86px 0;
  }

  .footer-bottom {
    gap: 12px;
  }
}

@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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}