@font-face {
  font-family: "Montserrat";
  src: url("/assets/fonts/montserrat-latin-var.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --navy: #0f1f38;
  --navy-2: #132848;
  --midnight: #0a1526;
  --gold: #e0a84e;
  --gold-deep: #cb8f2d;
  --gold-ink: #8a5d16;
  --slate: #8fa0b5;
  --cloud: #f2f2ef;
  --pale: #f4f6f9;
  --paper: #ffffff;
  --ink: #14243b;
  --ink-soft: #506078;
  --line: #dce3ec;
  --line-dark: rgba(143, 160, 181, 0.22);
  --shell: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--navy);
  font-family:
    "Montserrat",
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button {
  font: inherit;
}

img,
svg {
  display: block;
}

.shell {
  width: min(calc(100% - 48px), var(--shell));
  margin-inline: auto;
}

.grid-surface {
  background-color: var(--navy);
  background-image:
    linear-gradient(rgba(143, 160, 181, 0.065) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 160, 181, 0.065) 1px, transparent 1px);
  background-size: 72px 72px;
}

.nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: 84px;
  color: var(--cloud);
  border-bottom: 1px solid transparent;
  transition:
    background-color 0.3s ease,
    border-color 0.3s ease,
    backdrop-filter 0.3s ease;
}

.nav.scrolled,
.nav.menu-active {
  background: rgba(10, 21, 38, 0.985);
  border-color: var(--line-dark);
  backdrop-filter: blur(18px);
}

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  flex: none;
}

.brand-mark {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex: none;
}

.brand-lockup {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  min-width: 0;
}

.brand-wordmark {
  width: 146px;
  height: auto;
  object-fit: contain;
}

.brand-cn {
  color: var(--slate);
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 9px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.72em;
  padding-left: 2px;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  color: var(--slate);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav-links > a:not(.button) {
  position: relative;
  padding: 12px 0;
  transition: color 0.2s ease;
}

.nav-links > a:not(.button)::after {
  content: "";
  position: absolute;
  inset: auto 0 7px;
  height: 1px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--ease);
}

.nav-links > a:not(.button):hover,
.nav-links > a:not(.button):focus-visible {
  color: var(--cloud);
}

.nav-links > a:not(.button):hover::after,
.nav-links > a:not(.button):focus-visible::after {
  transform: scaleX(1);
}

.nav-login {
  margin-left: 6px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 25px;
  border: 1px solid var(--gold);
  background: var(--gold);
  color: var(--midnight);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    transform 0.25s var(--ease);
}

.button:hover,
.button:focus-visible {
  background: #e6b25d;
  border-color: #e6b25d;
  transform: translateY(-2px);
}

.button-small {
  min-height: 40px;
  padding-inline: 18px;
  font-size: 10px;
}

.button-outline {
  border-color: rgba(242, 242, 239, 0.38);
  background: transparent;
  color: var(--cloud);
}

.button-outline:hover,
.button-outline:focus-visible {
  border-color: var(--cloud);
  background: rgba(242, 242, 239, 0.08);
}

.nav-toggle {
  width: 44px;
  height: 44px;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid var(--line-dark);
  background: transparent;
  color: var(--cloud);
  cursor: pointer;
}

.nav-toggle span {
  width: 20px;
  height: 1px;
  background: currentColor;
  transition:
    transform 0.25s ease,
    opacity 0.25s ease;
}

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

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

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

.hero {
  position: relative;
  min-height: 860px;
  overflow: hidden;
  color: var(--cloud);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    circle at 71% 43%,
    rgba(28, 58, 105, 0.56),
    transparent 38%
  );
}

.terrain {
  position: absolute;
  pointer-events: none;
  border: 1px solid rgba(224, 168, 78, 0.38);
  border-radius: 50%;
}

.terrain::before {
  content: "";
  position: absolute;
  inset: 44px;
  border: 1px solid rgba(224, 168, 78, 0.24);
  border-radius: inherit;
}

.terrain-top {
  width: 520px;
  height: 520px;
  top: -310px;
  right: -130px;
}

.hero-grid {
  position: relative;
  z-index: 2;
  min-height: 860px;
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(500px, 1.04fr);
  align-items: center;
  gap: 68px;
  padding-top: 122px;
  padding-bottom: 78px;
}

.kicker,
.section-index,
.closing-kicker {
  margin: 0 0 24px;
  color: var(--gold);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

.kicker span {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.kicker span::before {
  content: "";
  width: 44px;
  height: 1px;
  background: var(--gold);
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(50px, 5.4vw, 78px);
  font-weight: 680;
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.hero h1 em {
  color: var(--gold);
  font-style: normal;
}

.hero-lede {
  max-width: 650px;
  margin: 30px 0 0;
  color: var(--slate);
  font-size: 17px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 36px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--cloud);
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.text-link span {
  color: var(--gold);
  font-size: 18px;
  transition: transform 0.25s var(--ease);
}

.text-link:hover span,
.text-link:focus-visible span {
  transform: translate(3px, 3px);
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 11px 24px;
  margin-top: 38px;
  color: rgba(143, 160, 181, 0.92);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-proof span {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.hero-proof span::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--gold);
}

.engine-visual {
  min-width: 0;
  border: 1px solid rgba(143, 160, 181, 0.25);
  background: rgba(10, 21, 38, 0.72);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(10px);
}

.engine-head {
  min-height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 15px 20px;
  border-bottom: 1px solid var(--line-dark);
}

.engine-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.engine-brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.engine-brand div {
  display: grid;
  gap: 3px;
}

.engine-brand b,
.engine-brand span,
.live-state {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.engine-brand span {
  color: var(--slate);
  font-size: 8px;
}

.live-state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--slate);
}

.live-state i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #63b487;
  box-shadow: 0 0 12px rgba(99, 180, 135, 0.9);
}

.signal-map {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  background-image:
    linear-gradient(rgba(143, 160, 181, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 160, 181, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}

.signal-map > svg {
  position: absolute;
  inset: 14px 0 0;
  width: 100%;
  height: calc(100% - 28px);
}

.signal-map > svg path {
  fill: none;
  stroke: rgba(143, 160, 181, 0.36);
  stroke-width: 1;
  stroke-dasharray: 5 6;
}

.core {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  width: 108px;
  height: 108px;
  display: grid;
  place-items: center;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(224, 168, 78, 0.38);
  border-radius: 50%;
  background: var(--navy);
  box-shadow: 0 0 55px rgba(224, 168, 78, 0.11);
}

.core > img {
  position: relative;
  z-index: 2;
  width: 55px;
  height: 55px;
  object-fit: contain;
}

.core-ring {
  position: absolute;
  inset: -20px;
  border: 1px solid rgba(224, 168, 78, 0.16);
  border-radius: 50%;
  animation: pulse 3.2s ease-out infinite;
}

.ring-2 {
  animation-delay: 1.6s;
}

@keyframes pulse {
  0% {
    transform: scale(0.76);
    opacity: 0;
  }
  28% {
    opacity: 1;
  }
  100% {
    transform: scale(1.36);
    opacity: 0;
  }
}

.signal {
  position: absolute;
  z-index: 3;
  min-width: 132px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 13px;
  border: 1px solid rgba(143, 160, 181, 0.22);
  background: rgba(19, 40, 72, 0.84);
  color: var(--slate);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.signal i {
  color: var(--gold);
  font-style: normal;
  font-size: 10px;
}

.signal-a {
  top: 42px;
  left: 26px;
}
.signal-b {
  top: 42px;
  right: 26px;
}
.signal-c {
  bottom: 42px;
  left: 26px;
}
.signal-d {
  right: 26px;
  bottom: 42px;
}

.engine-foot {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line-dark);
}

.engine-foot span {
  min-height: 66px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 14px;
  color: var(--slate);
  font-size: 7px;
  font-weight: 650;
  letter-spacing: 0.11em;
  line-height: 1.4;
}

.engine-foot span + span {
  border-left: 1px solid var(--line-dark);
}

.engine-foot b {
  color: var(--gold);
  font-size: 15px;
}

.scroll-cue {
  position: absolute;
  z-index: 3;
  bottom: 24px;
  left: 50%;
  width: 22px;
  height: 42px;
  display: flex;
  justify-content: center;
  border: 1px solid rgba(143, 160, 181, 0.4);
  border-radius: 20px;
  transform: translateX(-50%);
}

.scroll-cue span {
  width: 2px;
  height: 8px;
  margin-top: 8px;
  background: var(--gold);
  animation: scroll 1.8s ease-in-out infinite;
}

@keyframes scroll {
  0%,
  100% {
    transform: translateY(0);
    opacity: 0.35;
  }
  50% {
    transform: translateY(15px);
    opacity: 1;
  }
}

.section {
  position: relative;
  padding: 132px 0;
  overflow: hidden;
}

.section-light {
  background: var(--paper);
}

.section-navy {
  color: var(--cloud);
}

.section-head {
  max-width: 760px;
  margin-bottom: 68px;
}

.section-index {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 20px;
  font-size: 18px;
  letter-spacing: 0.08em;
}

.section-index span {
  color: var(--slate);
  font-size: 10px;
  letter-spacing: 0.3em;
}

/* The VI gold is an accent, not accessible as small text on white. */
.section-light .section-index,
.section-light .card-number,
.section-light .solution-code {
  color: var(--gold-ink);
}

.section-light .section-index span {
  color: var(--ink-soft);
}

.section-head h2 {
  margin: 0;
  font-size: clamp(38px, 5vw, 62px);
  font-weight: 680;
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.section-head > p:last-child {
  max-width: 650px;
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.8;
}

.section-head-dark > p:last-child {
  color: var(--slate);
}

.loop-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.loop-card {
  position: relative;
  min-height: 330px;
  padding: 34px 26px 32px;
  transition:
    background-color 0.25s ease,
    transform 0.25s var(--ease);
}

.loop-card + .loop-card {
  border-left: 1px solid var(--line);
}

.loop-card:hover {
  background: var(--pale);
  transform: translateY(-4px);
}

.card-number {
  color: var(--gold-deep);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.2em;
}

.line-icon {
  width: 54px;
  height: 54px;
  margin: 58px 0 28px;
}

.line-icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.loop-card h3,
.solution-card h3,
.trust-list h3,
.platform-copy h3 {
  margin: 0;
  font-size: 22px;
  line-height: 1.25;
}

.loop-card p {
  margin: 13px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

.terrain-side {
  width: 680px;
  height: 680px;
  top: 36%;
  left: -550px;
  border-color: rgba(224, 168, 78, 0.25);
}

.platform-row {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(540px, 1.18fr);
  gap: 88px;
  align-items: center;
  padding: 82px 0;
  border-top: 1px solid var(--line-dark);
}

.platform-row:last-child {
  border-bottom: 1px solid var(--line-dark);
}

.platform-row-reverse .platform-copy {
  order: 2;
}

.platform-row-reverse .product-window {
  order: 1;
}

.platform-label {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  color: var(--gold);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.3em;
}

.platform-label::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--gold);
}

.platform-copy h3 {
  color: var(--cloud);
  font-size: 32px;
}

.platform-copy > p {
  margin: 18px 0 0;
  color: var(--slate);
  font-size: 14px;
}

.platform-copy ul {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.platform-copy li {
  position: relative;
  padding: 8px 0 8px 22px;
  color: var(--cloud);
  border-bottom: 1px solid rgba(143, 160, 181, 0.13);
  font-size: 12px;
}

.platform-copy li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 8px;
  height: 4px;
  border-left: 1px solid var(--gold);
  border-bottom: 1px solid var(--gold);
  transform: rotate(-45deg);
}

.product-window {
  min-width: 0;
  overflow: hidden;
  border: 1px solid rgba(143, 160, 181, 0.26);
  background: var(--midnight);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.28);
}

.window-bar {
  height: 42px;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line-dark);
}

.window-bar i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(143, 160, 181, 0.44);
}

.window-bar span {
  min-width: 170px;
  margin-left: 8px;
  padding: 4px 14px;
  border: 1px solid rgba(143, 160, 181, 0.15);
  color: var(--slate);
  font-size: 8px;
  letter-spacing: 0.08em;
}

.site-preview {
  position: relative;
  min-height: 330px;
  padding: 23px;
  background:
    radial-gradient(
      circle at 83% 30%,
      rgba(224, 168, 78, 0.15),
      transparent 29%
    ),
    linear-gradient(135deg, #172e50, var(--navy));
}

.site-nav {
  display: flex;
  justify-content: space-between;
  color: var(--cloud);
  font-size: 8px;
  letter-spacing: 0.12em;
}

.site-nav span {
  color: var(--slate);
  letter-spacing: 0.04em;
}

.site-hero-copy {
  width: 54%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-top: 56px;
}

.site-hero-copy i {
  color: var(--gold);
  font-size: 7px;
  font-style: normal;
  letter-spacing: 0.2em;
}

.site-hero-copy b {
  margin: 10px 0 18px;
  color: var(--cloud);
  font-size: 26px;
  line-height: 1.05;
}

.site-hero-copy > span {
  width: 100%;
  height: 5px;
  margin-bottom: 7px;
  background: rgba(143, 160, 181, 0.28);
}

.site-hero-copy > span:nth-of-type(2) {
  width: 68%;
}

.site-hero-copy .demo-button,
.recommend-card .demo-button,
.knowledge-gap .demo-button,
.control-plan .demo-button {
  display: inline-block;
  border: 0;
  background: var(--gold);
  color: var(--midnight);
  font-size: 8px;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.site-hero-copy .demo-button {
  margin-top: 18px;
  padding: 8px 16px;
}

.site-cards {
  position: absolute;
  right: 24px;
  bottom: 24px;
  width: 40%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.site-cards span {
  height: 58px;
  border: 1px solid rgba(143, 160, 181, 0.18);
  background: rgba(242, 242, 239, 0.06);
}

.site-cards span:first-child {
  grid-column: span 2;
  height: 82px;
}

.check-panel {
  display: grid;
  grid-template-columns: 1.1fr repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line-dark);
}

.check-panel > * {
  min-height: 54px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-size: 7px;
}

.check-panel > * + * {
  border-left: 1px solid var(--line-dark);
}

.check-panel b {
  color: var(--slate);
  letter-spacing: 0.16em;
}

.check-ok {
  color: #76b991;
}
.check-next {
  color: var(--gold);
}

.conversation-head {
  height: 64px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line-dark);
}

.avatar {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--navy-2);
  color: var(--gold);
  font-weight: 700;
}

.conversation-head p {
  display: grid;
  margin: 0;
}

.conversation-head b,
.conversation-head i {
  font-size: 8px;
  letter-spacing: 0.12em;
}

.conversation-head i {
  color: var(--slate);
  font-style: normal;
  letter-spacing: 0;
}

.conversation-head em {
  margin-left: auto;
  color: #76b991;
  font-size: 8px;
  font-style: normal;
  letter-spacing: 0.16em;
}

.conversation-body {
  min-height: 380px;
  display: flex;
  flex-direction: column;
  gap: 13px;
  padding: 22px;
}

.bubble {
  max-width: 78%;
  margin: 0;
  padding: 12px 14px;
  font-size: 11px;
}

.bubble-user {
  align-self: flex-end;
  background: var(--navy-2);
  color: var(--cloud);
}

.bubble-ai {
  border: 1px solid var(--line-dark);
  color: var(--slate);
}

.recommend-card {
  max-width: 88%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border: 1px solid rgba(224, 168, 78, 0.28);
  background: rgba(19, 40, 72, 0.52);
}

.recommend-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  background: var(--navy);
}

.recommend-mark img {
  width: 26px;
  height: 26px;
  object-fit: contain;
}

.recommend-card p {
  flex: 1;
  display: grid;
  margin: 0;
}

.recommend-card b {
  color: var(--cloud);
  font-size: 10px;
}
.recommend-card i {
  color: var(--slate);
  font-size: 8px;
  font-style: normal;
}
.recommend-card .demo-button {
  padding: 7px 9px;
}

.conversation-result {
  margin-top: auto;
  padding: 8px 12px;
  border: 1px solid rgba(99, 180, 135, 0.25);
  color: #76b991;
  font-size: 8px;
  text-align: center;
  letter-spacing: 0.06em;
}

.knowledge-head {
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border-bottom: 1px solid var(--line-dark);
}

.knowledge-head b,
.knowledge-head span {
  font-size: 8px;
  letter-spacing: 0.12em;
}

.knowledge-head span {
  color: var(--slate);
  letter-spacing: 0;
}

.knowledge-list {
  padding: 8px 18px 0;
}

.knowledge-list p {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-dark);
}

.knowledge-list p > i {
  color: var(--gold);
  font-size: 9px;
  font-style: normal;
}

.knowledge-list p > span {
  flex: 1;
  display: grid;
}

.knowledge-list b {
  color: var(--cloud);
  font-size: 10px;
}
.knowledge-list em {
  color: var(--slate);
  font-size: 8px;
  font-style: normal;
}
.knowledge-list strong {
  color: #76b991;
  font-size: 7px;
  letter-spacing: 0.1em;
}

.knowledge-gap {
  position: relative;
  display: grid;
  gap: 4px;
  margin: 18px;
  padding: 16px;
  border-left: 2px solid var(--gold);
  background: rgba(244, 246, 249, 0.06);
}

.knowledge-gap span {
  color: var(--gold);
  font-size: 7px;
  font-weight: 700;
  letter-spacing: 0.14em;
}
.knowledge-gap b {
  color: var(--cloud);
  font-size: 11px;
}
.knowledge-gap em {
  color: var(--slate);
  font-size: 8px;
  font-style: normal;
}
.knowledge-gap .demo-button {
  position: absolute;
  right: 14px;
  bottom: 14px;
  padding: 7px 10px;
}

.control-window {
  padding: 20px;
}

.control-prompt {
  margin-left: 18%;
  padding: 14px 16px;
  background: var(--navy-2);
  color: var(--cloud);
  font-size: 11px;
}

.control-plan {
  margin-top: 18px;
  padding: 20px;
  border: 1px solid rgba(224, 168, 78, 0.3);
  background: rgba(19, 40, 72, 0.42);
}

.control-plan > span {
  color: var(--gold);
  font-size: 7px;
  font-weight: 750;
  letter-spacing: 0.18em;
}

.control-plan h4 {
  margin: 6px 0 14px;
  color: var(--cloud);
  font-size: 16px;
}

.control-plan p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 10px 0;
  border-top: 1px solid var(--line-dark);
  color: var(--slate);
  font-size: 9px;
}

.control-plan p i {
  color: var(--gold);
  font-style: normal;
}

.control-plan > div {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 18px;
}

.control-plan .demo-button {
  padding: 9px 12px;
}

.control-plan .control-cancel {
  border: 1px solid var(--line-dark);
  background: transparent;
  color: var(--slate);
}

.control-audit {
  margin: 14px 0 0;
  color: var(--slate);
  font-size: 8px;
  text-align: center;
}

.control-audit span {
  color: var(--gold);
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.solution-card {
  min-height: 360px;
  padding: 30px;
  border: 1px solid var(--line);
  background: var(--pale);
  transition:
    border-color 0.25s ease,
    transform 0.25s var(--ease),
    box-shadow 0.25s ease;
}

.solution-card:hover {
  border-color: var(--slate);
  transform: translateY(-5px);
  box-shadow: 0 24px 60px rgba(15, 31, 56, 0.09);
}

.solution-code {
  color: var(--gold-deep);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.22em;
}

.solution-card h3 {
  margin-top: 92px;
  font-size: 24px;
}

.solution-card > p {
  margin: 15px 0 28px;
  color: var(--ink-soft);
  font-size: 13px;
}

.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.solution-tags span {
  padding: 5px 9px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink-soft);
  font-size: 8px;
  font-weight: 650;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.trust-section {
  color: var(--cloud);
  background: var(--midnight);
}

.trust-layout {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 110px;
  align-items: start;
}

.trust-layout .section-head {
  position: sticky;
  top: 130px;
  margin: 0;
}

.text-link-light {
  margin-top: 28px;
}

.trust-list article {
  min-height: 205px;
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 26px;
  padding: 38px 0;
  border-top: 1px solid var(--line-dark);
}

.trust-list article:last-child {
  border-bottom: 1px solid var(--line-dark);
}

.trust-list article > span {
  color: var(--gold);
  font-size: 16px;
  font-weight: 700;
}

.trust-list h3 {
  color: var(--cloud);
}

.trust-list p {
  margin: 14px 0 0;
  color: var(--slate);
  font-size: 13px;
}

.closing {
  position: relative;
  min-height: 760px;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--cloud);
}

.closing::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 50% 40%,
    rgba(28, 58, 105, 0.58),
    transparent 44%
  );
}

.terrain-bottom {
  width: 620px;
  height: 620px;
  right: -370px;
  bottom: -360px;
}

.closing-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 100px 0;
  text-align: center;
}

.closing-brand {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-bottom: 52px;
}

.closing-brand > img {
  width: 88px;
  height: 88px;
  object-fit: contain;
}

.closing-brand > div {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.closing-brand div img {
  width: 258px;
  height: auto;
}

.closing-brand div span {
  color: var(--slate);
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.05em;
  padding-left: 3px;
}

.closing-kicker {
  margin-bottom: 16px;
}

.closing h2 {
  margin: 0;
  font-size: clamp(44px, 6vw, 72px);
  line-height: 1.1;
  letter-spacing: -0.045em;
}

.closing-inner > p:not(.closing-kicker) {
  margin: 22px 0 0;
  color: var(--slate);
}

.closing-actions {
  justify-content: center;
}

.footer {
  color: var(--cloud);
  background: var(--midnight);
  border-top: 1px solid var(--line-dark);
}

.footer-top {
  min-height: 230px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
}

.footer-brand .brand-mark {
  width: 36px;
  height: 36px;
}

.footer-brand .brand-wordmark {
  width: 132px;
}

.footer-links {
  display: flex;
  gap: 90px;
}

.footer-links > div {
  display: flex;
  flex-direction: column;
  min-width: 120px;
}

.footer-links b {
  margin-bottom: 12px;
  color: var(--gold);
  font-size: 9px;
  letter-spacing: 0.2em;
}

.footer-links a {
  padding: 4px 0;
  color: var(--slate);
  font-size: 12px;
  transition: color 0.2s ease;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--cloud);
}

.footer-base {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line-dark);
  color: rgba(143, 160, 181, 0.74);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.motion-ready .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.75s var(--ease) var(--delay, 0s),
    transform 0.75s var(--ease) var(--delay, 0s);
}

.motion-ready .reveal.in {
  opacity: 1;
  transform: none;
}

.still .reveal,
.still.motion-ready .reveal {
  opacity: 1;
  transform: none;
  transition: none;
}

html.still {
  scroll-behavior: auto;
}

.still .core-ring,
.still .scroll-cue span {
  animation: none;
}

@media (max-width: 1100px) {
  .nav-links {
    gap: 20px;
  }
  .hero-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 42px;
  }
  .engine-foot span {
    padding-inline: 9px;
  }
  .platform-row {
    grid-template-columns: 0.82fr 1.18fr;
    gap: 50px;
  }
  .trust-layout {
    gap: 70px;
  }
}

@media (max-width: 920px) {
  .js .nav-toggle {
    display: flex;
  }
  .js .nav-links {
    position: fixed;
    inset: 84px 0 auto;
    max-height: calc(100vh - 84px);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 18px 24px 28px;
    overflow-y: auto;
    border-bottom: 1px solid var(--line-dark);
    background: rgba(10, 21, 38, 0.985);
  }
  .js .nav-links.open {
    display: flex;
  }
  html:not(.js) .nav-links {
    gap: 0;
    margin-left: auto;
  }
  html:not(.js) .nav-links > a:not(.button) {
    display: none;
  }
  html:not(.js) .nav-links .button {
    min-height: 38px;
    padding-inline: 14px;
  }
  .nav-links > a:not(.button) {
    padding: 15px 2px;
    border-bottom: 1px solid var(--line-dark);
  }
  .nav-links > a:not(.button)::after {
    display: none;
  }
  .nav-links .button {
    margin-top: 18px;
  }
  .nav-login {
    margin-left: 0;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 164px;
    padding-bottom: 120px;
  }
  .hero {
    min-height: 0;
  }
  .hero-copy {
    max-width: 720px;
  }
  .engine-visual {
    width: min(100%, 650px);
  }
  .loop-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .loop-card:nth-child(3) {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .loop-card:nth-child(4) {
    border-top: 1px solid var(--line);
  }
  .platform-row,
  .platform-row-reverse {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .platform-row-reverse .platform-copy,
  .platform-row-reverse .product-window {
    order: initial;
  }
  .product-window {
    width: min(100%, 680px);
  }
  .solution-grid {
    grid-template-columns: 1fr;
  }
  .solution-card {
    min-height: 280px;
  }
  .solution-card h3 {
    margin-top: 54px;
  }
  .trust-layout {
    grid-template-columns: 1fr;
    gap: 58px;
  }
  .trust-layout .section-head {
    position: static;
  }
}

@media (max-width: 640px) {
  html {
    scroll-padding-top: 74px;
  }

  .shell {
    width: min(calc(100% - 32px), var(--shell));
  }
  .nav {
    height: 74px;
  }
  .nav-links {
    inset-block-start: 74px;
    max-height: calc(100vh - 74px);
  }
  .brand {
    gap: 10px;
  }
  .brand-mark {
    width: 34px;
    height: 34px;
  }
  .brand-wordmark {
    width: 118px;
  }
  .brand-cn {
    font-size: 7px;
  }
  .nav-toggle {
    width: 40px;
    height: 40px;
  }
  .grid-surface {
    background-size: 48px 48px;
  }
  .hero-grid {
    padding-top: 136px;
    padding-bottom: 100px;
  }
  .hero h1 {
    font-size: clamp(43px, 13vw, 58px);
  }
  .hero-lede {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
    gap: 19px;
  }
  .hero-actions .button {
    width: 100%;
  }
  .hero-proof {
    display: grid;
  }
  .engine-head {
    align-items: flex-start;
  }
  .live-state {
    margin-top: 7px;
    font-size: 7px;
  }
  .signal-map {
    min-height: 320px;
  }
  .signal {
    min-width: 112px;
    padding: 9px;
    font-size: 7px;
  }
  .signal-a,
  .signal-c {
    left: 12px;
  }
  .signal-b,
  .signal-d {
    right: 12px;
  }
  .signal-a,
  .signal-b {
    top: 30px;
  }
  .signal-c,
  .signal-d {
    bottom: 30px;
  }
  .core {
    width: 86px;
    height: 86px;
  }
  .core > img {
    width: 46px;
    height: 46px;
  }
  .engine-foot {
    grid-template-columns: 1fr;
  }
  .engine-foot span {
    min-height: 45px;
  }
  .engine-foot span + span {
    border-left: 0;
    border-top: 1px solid var(--line-dark);
  }
  .section {
    padding: 92px 0;
  }
  .section-head {
    margin-bottom: 48px;
  }
  .section-head h2 {
    font-size: 40px;
  }
  .section-head > p:last-child {
    font-size: 14px;
  }
  .loop-grid {
    grid-template-columns: 1fr;
  }
  .loop-card {
    min-height: 270px;
    padding: 28px 22px;
  }
  .loop-card + .loop-card {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .line-icon {
    margin-top: 38px;
  }
  .platform-row {
    padding: 60px 0;
  }
  .platform-copy h3 {
    font-size: 28px;
  }
  .site-preview {
    min-height: 290px;
    padding: 16px;
  }
  .site-hero-copy {
    width: 66%;
    padding-top: 45px;
  }
  .site-hero-copy b {
    font-size: 21px;
  }
  .site-cards {
    display: none;
  }
  .check-panel {
    grid-template-columns: 1fr;
  }
  .check-panel > * {
    min-height: 40px;
  }
  .check-panel > * + * {
    border-left: 0;
    border-top: 1px solid var(--line-dark);
  }
  .conversation-body {
    min-height: 410px;
    padding: 15px;
  }
  .bubble {
    max-width: 92%;
  }
  .recommend-card {
    max-width: 100%;
    align-items: flex-start;
  }
  .recommend-card .demo-button {
    align-self: center;
  }
  .knowledge-gap {
    padding-bottom: 54px;
  }
  .control-prompt {
    margin-left: 8%;
  }
  .control-window {
    padding: 13px;
  }
  .control-plan {
    padding: 15px;
  }
  .solution-card {
    padding: 24px;
  }
  .trust-list article {
    grid-template-columns: 42px 1fr;
    gap: 12px;
  }
  .closing {
    min-height: 690px;
  }
  .closing-brand {
    gap: 14px;
    margin-bottom: 42px;
  }
  .closing-brand > img {
    width: 64px;
    height: 64px;
  }
  .closing-brand div img {
    width: min(210px, 54vw);
  }
  .closing-brand div span {
    font-size: 9px;
  }
  .closing h2 {
    font-size: 44px;
  }
  .closing-actions {
    width: 100%;
  }
  .footer-top {
    min-height: 340px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
  }
  .footer-links {
    width: 100%;
    justify-content: space-between;
    gap: 32px;
  }
  .footer-base {
    min-height: 100px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .motion-ready .reveal,
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .core-ring,
  .scroll-cue span {
    animation: none;
  }
}