:root {
  --paper: #f7faf8;
  --paper-deep: #edf6f4;
  --surface: #ffffff;
  --ink: #071f32;
  --text: #2b4351;
  --muted: #657985;
  --line: #c7dce3;
  --blue: #0784c4;
  --teal: #15b9c5;
  --green: #12a66a;
  --amber: #e29a2d;
  --coral: #d95d5d;
  --navy: #062133;
  --shadow: 0 20px 50px rgba(24, 61, 78, 0.12);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  position: relative;
  margin: 0;
  color: var(--text);
  background: var(--paper);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.6;
}

.site-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(8, 132, 196, 0.045) 1px, transparent 1px),
    linear-gradient(0deg, rgba(21, 185, 197, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, transparent 0, #000 18%, #000 78%, transparent 100%);
  animation: grid-drift 26s linear infinite;
}

.water-ripples {
  position: fixed;
  inset: -18%;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  opacity: 0.38;
  mix-blend-mode: multiply;
}

.water-ripples::before,
.water-ripples::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 24% 22%, rgba(21, 185, 197, 0.12), transparent 34%),
    radial-gradient(ellipse at 78% 70%, rgba(8, 132, 196, 0.1), transparent 30%),
    repeating-radial-gradient(
      ellipse at 30% 35%,
      transparent 0 58px,
      rgba(21, 185, 197, 0.1) 59px 61px,
      transparent 62px 122px
    );
  filter: blur(0.2px);
  transform-origin: center;
  animation: water-ripple-flow 22s ease-in-out infinite alternate;
}

.water-ripples::after {
  opacity: 0.72;
  background:
    radial-gradient(ellipse at 64% 28%, rgba(18, 166, 106, 0.09), transparent 32%),
    repeating-radial-gradient(
      ellipse at 72% 62%,
      transparent 0 72px,
      rgba(8, 132, 196, 0.09) 73px 75px,
      transparent 76px 144px
    );
  animation-duration: 28s;
  animation-direction: alternate-reverse;
}

.signal-rail {
  --scroll-ratio: 0;
  position: fixed;
  right: 22px;
  top: 50%;
  z-index: 42;
  width: 18px;
  height: 220px;
  pointer-events: none;
  transform: translateY(-50%);
}

.signal-rail::before,
.signal-rail::after {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  width: 2px;
  border-radius: 2px;
}

.signal-rail::before {
  height: 100%;
  background: rgba(7, 31, 50, 0.12);
}

.signal-rail::after {
  height: calc(var(--scroll-ratio) * 100%);
  background: linear-gradient(180deg, var(--blue), var(--teal), var(--green));
  box-shadow: 0 0 18px rgba(21, 185, 197, 0.38);
}

.signal-rail span {
  position: absolute;
  left: 3px;
  width: 12px;
  height: 12px;
  background: #fff;
  border: 1px solid rgba(8, 132, 196, 0.46);
  transform: rotate(45deg);
}

.signal-rail span:nth-child(1) {
  top: 0;
}

.signal-rail span:nth-child(2) {
  top: 25%;
}

.signal-rail span:nth-child(3) {
  top: 50%;
}

.signal-rail span:nth-child(4) {
  top: 75%;
}

.signal-rail span:nth-child(5) {
  bottom: 0;
}

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

.cursor-reticle {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 80;
  width: 42px;
  height: 42px;
  pointer-events: none;
  opacity: 0;
  border: 1px solid rgba(8, 132, 196, 0.28);
  border-radius: 50%;
  transform: translate3d(-100px, -100px, 0);
  transition: opacity 160ms ease;
  mix-blend-mode: multiply;
}

.cursor-reticle::before,
.cursor-reticle::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  background: rgba(8, 132, 196, 0.74);
  transform: translate(-50%, -50%);
}

.cursor-reticle::before {
  width: 42px;
  height: 1px;
}

.cursor-reticle::after {
  width: 1px;
  height: 42px;
}

.cursor-reticle.is-visible {
  opacity: 1;
  animation: reticle-pulse 1.8s ease-out infinite;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 72px;
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 0 56px;
  background: rgba(247, 250, 248, 0.92);
  border-bottom: 1px solid rgba(199, 220, 227, 0.72);
  backdrop-filter: blur(18px);
}

.site-header.is-scrolled {
  box-shadow: 0 12px 32px rgba(7, 31, 50, 0.08);
}

.brand {
  display: flex;
  align-items: center;
  width: 142px;
  flex: 0 0 auto;
}

.brand img {
  width: 142px;
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  margin-left: auto;
  font-size: 14px;
  color: var(--text);
}

.nav a {
  padding: 24px 0;
}

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

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-weight: 700;
  font-size: 14px;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.header-cta,
.button.primary {
  color: #fff;
  background: var(--navy);
  border-color: var(--navy);
}

.button.secondary {
  color: var(--navy);
  background: rgba(255, 255, 255, 0.72);
  border-color: var(--line);
}

.header-cta:hover,
.button:hover {
  transform: translateY(-1px);
}

.hero {
  position: relative;
  min-height: 680px;
  height: min(78vh, 790px);
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 64% 50%;
  opacity: 0.48;
}

.hero-network {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.96;
}

.optical-field {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.optical-field::before {
  content: "";
  position: absolute;
  left: 55%;
  top: 48%;
  width: 680px;
  height: 520px;
  border: 1px solid rgba(8, 132, 196, 0.12);
  border-radius: 50%;
  background:
    repeating-radial-gradient(ellipse at center, transparent 0 46px, rgba(8, 132, 196, 0.08) 48px 50px, transparent 52px 88px),
    conic-gradient(from 210deg, transparent 0deg, rgba(21, 185, 197, 0.12) 28deg, transparent 64deg, transparent 168deg, rgba(8, 132, 196, 0.08) 206deg, transparent 250deg);
  transform: translate(-50%, -50%);
  animation: optical-wave-breathe 14s cubic-bezier(0.37, 0, 0.63, 1) infinite alternate;
}

.optical-field::after {
  content: "";
  position: absolute;
  left: 38px;
  right: 0;
  top: 0;
  height: 100%;
  background:
    linear-gradient(90deg, transparent 0, rgba(8, 132, 196, 0.08) 50%, transparent 100%),
    repeating-linear-gradient(90deg, transparent 0 78px, rgba(8, 132, 196, 0.055) 79px, transparent 80px);
  opacity: 0.58;
  animation: scan-field 12s ease-in-out infinite alternate;
}

.optical-field span {
  position: absolute;
  right: 8%;
  width: 340px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(8, 132, 196, 0.54), transparent);
  transform-origin: right center;
  animation: optical-line 9s ease-in-out infinite;
}

.optical-field span:nth-child(1) {
  top: 21%;
}

.optical-field span:nth-child(2) {
  top: 32%;
  right: 11%;
  width: 260px;
  animation-delay: -1.7s;
}

.optical-field span:nth-child(3) {
  top: 58%;
  right: 5%;
  width: 390px;
  animation-delay: -3.1s;
}

.optical-field span:nth-child(4) {
  top: 69%;
  right: 13%;
  width: 220px;
  animation-delay: -4.8s;
}

.hero-shade {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: rgba(247, 250, 248, 0.7);
}

.hero-wavefield {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
  mix-blend-mode: multiply;
}

.hero-wavefield::before {
  content: "";
  position: absolute;
  left: 10%;
  right: -12%;
  top: 20%;
  height: 46%;
  border-radius: 50%;
  background:
    linear-gradient(105deg, transparent 0 18%, rgba(255, 255, 255, 0.54) 32%, rgba(21, 185, 197, 0.16) 44%, transparent 62%),
    repeating-linear-gradient(108deg, transparent 0 34px, rgba(8, 132, 196, 0.075) 35px 36px, transparent 37px 72px);
  filter: blur(1.2px);
  opacity: 0.46;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 0 54%, transparent 78%);
  mask-image: radial-gradient(ellipse at center, #000 0 54%, transparent 78%);
  transform: translate3d(-8%, 0, 0) skewX(-8deg);
  animation: hero-light-sweep 8.8s cubic-bezier(0.45, 0, 0.25, 1) infinite;
}

.hero-wavefield::after {
  content: "";
  position: absolute;
  left: 45%;
  top: 46%;
  width: 560px;
  height: 390px;
  border-radius: 50%;
  background:
    repeating-radial-gradient(ellipse at center, transparent 0 38px, rgba(21, 185, 197, 0.12) 39px 41px, transparent 42px 76px),
    radial-gradient(ellipse at center, rgba(255, 255, 255, 0.2), transparent 62%);
  opacity: 0.48;
  transform: translate(-50%, -50%) scale(0.96);
  animation: hero-wave-pulse 7.2s ease-in-out infinite;
}

.hero-wavefield span {
  position: absolute;
  display: block;
  pointer-events: none;
}

.hero-wavefield span:nth-child(1) {
  left: 38%;
  top: 39%;
  width: 410px;
  height: 210px;
  border: 1px solid rgba(21, 185, 197, 0.2);
  border-left-color: transparent;
  border-bottom-color: transparent;
  border-radius: 50%;
  box-shadow: 0 -18px 34px rgba(21, 185, 197, 0.08);
  transform: translate(-50%, -50%) rotate(-10deg);
  animation: hero-arc-drift 9.5s ease-in-out infinite alternate;
}

.hero-wavefield span:nth-child(2) {
  left: 47%;
  top: 58%;
  width: 230px;
  height: 230px;
  border-radius: 50%;
  background:
    radial-gradient(circle, transparent 0 34%, rgba(8, 132, 196, 0.12) 35% 36%, transparent 37% 51%, rgba(21, 185, 197, 0.1) 52% 53%, transparent 54%),
    linear-gradient(90deg, transparent 49.5%, rgba(8, 132, 196, 0.14) 50%, transparent 50.5%),
    linear-gradient(0deg, transparent 49.5%, rgba(8, 132, 196, 0.14) 50%, transparent 50.5%);
  opacity: 0.42;
  transform: translate(-50%, -50%);
  animation: hero-focus-breathe 5.6s ease-in-out infinite;
}

.hero-wavefield span:nth-child(3) {
  left: 20%;
  right: 4%;
  top: 64%;
  height: 160px;
  background:
    radial-gradient(circle at 8% 52%, rgba(18, 166, 106, 0.18) 0 3px, transparent 4px),
    radial-gradient(circle at 36% 42%, rgba(8, 132, 196, 0.16) 0 2px, transparent 3px),
    radial-gradient(circle at 62% 58%, rgba(21, 185, 197, 0.16) 0 3px, transparent 4px),
    radial-gradient(circle at 88% 34%, rgba(18, 166, 106, 0.14) 0 2px, transparent 3px);
  opacity: 0.78;
  animation: hero-node-drift 12s ease-in-out infinite alternate;
}

.hero::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 38px;
  height: 100%;
  background: var(--navy);
}

.hero::after {
  content: "";
  position: absolute;
  left: 38px;
  top: 0;
  width: 6px;
  height: 100%;
  background: var(--teal);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(1180px, calc(100% - 112px));
  margin: 0 auto;
  padding: 68px 0 58px;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(340px, 0.72fr);
  column-gap: 64px;
  align-items: center;
}

.hero-copy {
  min-width: 0;
}

.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.eyebrow::before,
.section-kicker::before {
  content: "";
  width: 10px;
  height: 10px;
  background: currentColor;
}

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

.hero h1 {
  margin: 28px 0 18px;
  color: var(--ink);
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: 58px;
  line-height: 1.05;
}

.hero-lede {
  max-width: 660px;
  margin-bottom: 28px;
  color: var(--ink);
  font-size: 23px;
  line-height: 1.55;
  font-weight: 700;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 0;
}

.hero-system {
  align-self: center;
  min-height: 352px;
  padding: 26px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(199, 220, 227, 0.92);
  box-shadow: 16px 18px 0 rgba(8, 132, 196, 0.07);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.hero-system::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(21, 185, 197, 0.18);
  pointer-events: none;
}

.hero-system::after {
  content: "";
  position: absolute;
  right: -42px;
  top: -42px;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(8, 132, 196, 0.18);
  border-radius: 50%;
  background:
    linear-gradient(90deg, transparent 49%, rgba(8, 132, 196, 0.16) 50%, transparent 51%),
    linear-gradient(0deg, transparent 49%, rgba(8, 132, 196, 0.16) 50%, transparent 51%);
  animation: hero-panel-focus 9s ease-in-out infinite;
  pointer-events: none;
}

.system-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 20px;
  margin-bottom: 18px;
  border-bottom: 1px solid rgba(199, 220, 227, 0.82);
}

.system-head span {
  color: var(--blue);
  font-size: 11px;
  font-weight: 900;
  text-transform: uppercase;
}

.system-head strong {
  color: var(--ink);
  font-size: 22px;
  line-height: 1.2;
  text-align: right;
}

.system-route {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 12px;
}

.system-route div {
  position: relative;
  display: grid;
  grid-template-columns: 42px 104px 1fr;
  align-items: center;
  gap: 16px;
  min-height: 54px;
  padding: 12px 14px;
  background: rgba(247, 250, 248, 0.84);
  border: 1px solid rgba(199, 220, 227, 0.88);
  overflow: hidden;
}

.system-route div::after {
  content: "";
  position: absolute;
  left: -18px;
  top: 50%;
  width: 18px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--teal));
  box-shadow: 0 0 10px rgba(21, 185, 197, 0.52);
  animation: data-packet 3.8s ease-in-out infinite;
}

.system-route div:nth-child(2)::after {
  animation-delay: -0.8s;
}

.system-route div:nth-child(3)::after {
  animation-delay: -1.6s;
}

.system-route div:nth-child(4)::after {
  animation-delay: -2.4s;
}

.system-route div + div {
  position: relative;
}

.system-route div + div::before {
  content: "";
  position: absolute;
  left: 34px;
  top: -13px;
  width: 1px;
  height: 13px;
  background: rgba(8, 132, 196, 0.42);
}

.system-route span {
  color: var(--teal);
  font-size: 18px;
  font-weight: 900;
}

.system-route strong {
  color: var(--ink);
  font-size: 15px;
}

.system-route em {
  color: var(--muted);
  font-style: normal;
  font-size: 12px;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-column: 1 / -1;
  width: min(820px, 100%);
  gap: 20px;
  margin: 34px 0 0;
}

.hero-metrics div {
  min-height: 98px;
  padding: 18px 18px 16px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid rgba(199, 220, 227, 0.86);
  box-shadow: 12px 14px 0 rgba(8, 132, 196, 0.08);
  transform: translate3d(0, 0, 0);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
  position: relative;
  overflow: hidden;
}

.hero-metrics div::after,
.product-card::after,
.trust-grid article::after,
.ecosystem-grid article::after {
  content: "";
  position: absolute;
  left: -45%;
  top: 0;
  width: 30%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(21, 185, 197, 0.16), transparent);
  transform: skewX(-18deg);
  animation: card-scan 7.5s ease-in-out infinite;
  pointer-events: none;
}

.hero-metrics div:hover,
.product-card:hover,
.value-grid article:hover,
.ecosystem-grid article:hover {
  transform: translate3d(0, -4px, 0);
  border-color: rgba(8, 132, 196, 0.36);
  box-shadow: 16px 18px 0 rgba(8, 132, 196, 0.08);
}

.hero-metrics dt {
  color: var(--blue);
  font-size: 28px;
  line-height: 1.1;
  font-weight: 900;
}

.hero-metrics dd {
  margin: 10px 0 0;
  color: var(--text);
  font-size: 13px;
}

.intro-band {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  width: min(1180px, calc(100% - 112px));
  margin: -40px auto 0;
  padding: 28px 34px;
  position: relative;
  z-index: 2;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.intro-band h2 {
  margin: 8px 0 0;
  color: var(--ink);
  font-size: 24px;
  line-height: 1.25;
}

.intro-band p {
  margin: 0;
  color: var(--text);
  font-size: 16px;
}

.section {
  width: min(1180px, calc(100% - 112px));
  margin: 0 auto;
  padding: 98px 0;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 38px;
}

.section-heading.split {
  max-width: none;
  display: grid;
  grid-template-columns: 1fr 0.78fr;
  align-items: end;
  gap: 64px;
}

.section-heading h2 {
  margin: 10px 0 0;
  color: var(--ink);
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: 36px;
  line-height: 1.22;
}

.section-heading p {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.value-grid,
.product-grid,
.trust-grid,
.ecosystem-grid {
  display: grid;
  gap: 22px;
}

.value-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.value-grid article,
.product-card,
.trust-grid article,
.ecosystem-grid article {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 12px 14px 0 rgba(7, 31, 50, 0.05);
  border-radius: 8px;
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
  position: relative;
  overflow: hidden;
}

.value-grid article {
  padding: 30px;
  min-height: 218px;
}

.value-grid span {
  color: var(--teal);
  font-size: 34px;
  font-weight: 900;
}

.value-grid h3 {
  margin: 18px 0 10px;
  color: var(--ink);
  font-size: 22px;
}

.value-grid p,
.product-card p,
.ecosystem-grid p,
.trust-grid span {
  margin: 0;
  color: var(--text);
}

.products {
  width: 100%;
  padding-left: max(56px, calc((100% - 1180px) / 2));
  padding-right: max(56px, calc((100% - 1180px) / 2));
  background: #eef6f4;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.product-grid {
  grid-template-columns: 1.1fr 1fr 1fr;
}

.product-card {
  padding: 30px;
  min-height: 390px;
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 8px;
  height: 100%;
  background: var(--blue);
}

.product-card:nth-child(2)::before {
  background: var(--teal);
}

.product-card:nth-child(3)::before {
  background: var(--green);
}

.product-card.featured {
  background:
    radial-gradient(circle at 16% 10%, rgba(21, 185, 197, 0.2), transparent 32%),
    linear-gradient(145deg, rgba(236, 251, 250, 0.98), rgba(255, 255, 255, 0.94) 48%, rgba(232, 246, 255, 0.96));
  color: var(--ink);
  border-color: rgba(8, 132, 196, 0.28);
}

.product-card.featured h3,
.product-card.featured p,
.product-card.featured li {
  color: var(--ink);
}

.product-label {
  display: inline-flex;
  padding: 7px 10px;
  margin-bottom: 28px;
  color: var(--blue);
  background: rgba(8, 132, 196, 0.11);
  border: 1px solid rgba(8, 132, 196, 0.28);
  font-size: 12px;
  font-weight: 900;
}

.product-card.featured .product-label {
  color: var(--blue);
  background: rgba(255, 255, 255, 0.72);
  border-color: rgba(8, 132, 196, 0.28);
}

.product-label.teal {
  color: var(--teal);
  background: rgba(21, 185, 197, 0.12);
  border-color: rgba(21, 185, 197, 0.3);
}

.product-label.green {
  color: var(--green);
  background: rgba(18, 166, 106, 0.12);
  border-color: rgba(18, 166, 106, 0.28);
}

.product-card h3 {
  color: var(--ink);
  font-size: 28px;
  margin-bottom: 14px;
}

.product-card ul {
  display: grid;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.product-card li {
  position: relative;
  padding-left: 18px;
  color: var(--text);
  font-size: 14px;
}

.product-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 2px;
  background: currentColor;
}

.flow-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.flow-tabs button {
  min-width: 118px;
  min-height: 44px;
  padding: 0 20px;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 10px 22px rgba(20, 96, 132, 0.06);
  transition: color 0.22s ease, background 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease,
    transform 0.22s ease;
}

.flow-tabs button:hover {
  transform: translateY(-1px);
  border-color: rgba(13, 139, 205, 0.45);
  box-shadow: 0 14px 28px rgba(20, 96, 132, 0.1);
}

.flow-tabs button.active {
  color: #fff;
  background: var(--blue);
  border-color: var(--blue);
  box-shadow: 0 16px 30px rgba(13, 139, 205, 0.24);
}

.flow-board {
  --flow-content-height: 280px;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 34px;
  align-items: stretch;
  padding: 34px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.flow-board::after {
  content: "";
  position: absolute;
  left: -25%;
  top: 0;
  z-index: 0;
  width: 22%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(21, 185, 197, 0.12), transparent);
  transform: skewX(-18deg);
  animation: flow-scan 8s ease-in-out infinite;
  pointer-events: none;
}

.flow-summary,
.step-track {
  position: relative;
  z-index: 1;
}

.flow-summary {
  padding: 26px;
  height: var(--flow-content-height);
  min-height: var(--flow-content-height);
  background: var(--paper-deep);
  border-left: 8px solid var(--blue);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.flow-tag {
  margin-bottom: 18px;
  color: var(--blue);
  font-weight: 900;
}

.flow-summary h3 {
  color: var(--ink);
  font-size: 26px;
  line-height: 1.22;
}

.flow-summary p:last-child {
  min-height: 78px;
}

.step-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  height: var(--flow-content-height);
  min-height: var(--flow-content-height);
  align-items: stretch;
}

.step-track li {
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font-weight: 800;
}

.step-track span {
  display: block;
  margin-bottom: 28px;
  color: var(--teal);
  font-size: 30px;
  line-height: 1;
  font-weight: 900;
}

.flow-board.is-switching .flow-summary,
.flow-board.is-switching .step-track li {
  animation: flow-content-in 0.58s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.platform {
  padding-top: 84px;
}

.platform-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 34px;
}

.platform-stack {
  display: grid;
  gap: 14px;
}

.platform-stack div {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 24px;
  align-items: center;
  min-height: 74px;
  padding: 18px 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 8px solid var(--teal);
}

.platform-stack div:nth-child(2) {
  border-left-color: var(--blue);
}

.platform-stack div:nth-child(3) {
  border-left-color: var(--green);
}

.platform-stack div:nth-child(4) {
  border-left-color: var(--amber);
}

.platform-stack div:nth-child(5) {
  border-left-color: var(--coral);
}

.platform-stack strong {
  color: var(--ink);
  font-size: 17px;
}

.platform-stack span {
  color: var(--text);
  font-weight: 700;
}

.data-panel {
  padding: 24px;
  background:
    radial-gradient(circle at 78% 18%, rgba(21, 185, 197, 0.2), transparent 30%),
    linear-gradient(155deg, rgba(242, 253, 252, 0.98), rgba(255, 255, 255, 0.94) 52%, rgba(232, 247, 255, 0.98));
  color: var(--ink);
  border: 1px solid rgba(8, 132, 196, 0.24);
  border-radius: 8px;
  box-shadow: 12px 14px 0 rgba(21, 185, 197, 0.1);
  position: relative;
  overflow: hidden;
}

.data-panel::before {
  content: "";
  position: absolute;
  inset: 18px;
  border: 1px solid rgba(8, 132, 196, 0.16);
  pointer-events: none;
}

.data-panel::after {
  content: "";
  position: absolute;
  right: 28px;
  top: 34px;
  width: 118px;
  height: 118px;
  border: 1px solid rgba(21, 185, 197, 0.22);
  border-radius: 50%;
  background:
    linear-gradient(90deg, transparent 49%, rgba(21, 185, 197, 0.22) 50%, transparent 51%),
    linear-gradient(0deg, transparent 49%, rgba(21, 185, 197, 0.22) 50%, transparent 51%);
  animation: spin-only 18s linear infinite reverse;
  pointer-events: none;
}

.data-panel img {
  position: relative;
  z-index: 1;
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  margin-bottom: 24px;
  background: rgba(255, 255, 255, 0.66);
  border: 1px solid rgba(199, 220, 227, 0.72);
}

.data-panel dl {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 18px;
  margin: 0;
}

.data-panel dt {
  color: var(--blue);
  font-size: 24px;
  font-weight: 900;
}

.data-panel dd {
  margin: 4px 0 0;
  color: var(--text);
  font-size: 13px;
}

.evidence {
  width: 100%;
  padding-left: max(56px, calc((100% - 1180px) / 2));
  padding-right: max(56px, calc((100% - 1180px) / 2));
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.legal-note {
  margin: -8px 0 24px;
  padding: 14px 18px;
  color: var(--muted);
  background: rgba(237, 246, 244, 0.82);
  border: 1px solid var(--line);
  border-left: 6px solid var(--teal);
  border-radius: 4px;
  font-size: 14px;
}

.evidence-grid figure,
.patent-row article {
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.evidence-grid img {
  width: 100%;
  height: 238px;
  object-fit: contain;
  padding: 16px;
  background: #fff;
}

.evidence-grid figcaption {
  min-height: 72px;
  padding: 18px;
  color: var(--ink);
  font-weight: 800;
}

.patent-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  margin-top: 24px;
}

.patent-row article {
  padding-bottom: 22px;
}

.patent-row img {
  width: 100%;
  height: 170px;
  object-fit: contain;
  padding: 14px;
  background: #fff;
}

.patent-row h3,
.patent-row p {
  padding: 0 22px;
}

.patent-row h3 {
  margin: 20px 0 8px;
  color: var(--ink);
  font-size: 19px;
}

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

.trust-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.trust-grid article {
  min-height: 168px;
  padding: 28px;
  border-top: 8px solid var(--blue);
}

.trust-grid article:nth-child(2) {
  border-top-color: var(--green);
}

.trust-grid article:nth-child(3) {
  border-top-color: var(--teal);
}

.trust-grid article:nth-child(4) {
  border-top-color: var(--amber);
}

.trust-grid strong {
  display: block;
  margin-bottom: 18px;
  color: var(--ink);
  font-size: 22px;
}

.ecosystem {
  padding-top: 42px;
}

.ecosystem-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ecosystem-grid article {
  min-height: 226px;
  padding: 30px;
}

.ecosystem-grid h3 {
  color: var(--ink);
  font-size: 22px;
}

.closing-cta {
  margin-top: 36px;
  padding: 42px;
  color: var(--ink);
  background:
    radial-gradient(circle at 16% 24%, rgba(21, 185, 197, 0.22), transparent 30%),
    radial-gradient(circle at 86% 18%, rgba(18, 166, 106, 0.14), transparent 28%),
    linear-gradient(135deg, rgba(238, 251, 249, 0.98), rgba(255, 255, 255, 0.94) 54%, rgba(232, 246, 255, 0.98));
  border: 1px solid rgba(8, 132, 196, 0.22);
  border-radius: 8px;
  box-shadow: 14px 16px 0 rgba(21, 185, 197, 0.09);
  position: relative;
  overflow: hidden;
}

.closing-cta::after {
  content: "";
  position: absolute;
  inset: auto -8% -44% 38%;
  height: 180px;
  background: repeating-radial-gradient(
    ellipse at center,
    rgba(8, 132, 196, 0.12) 0 2px,
    transparent 3px 30px
  );
  opacity: 0.52;
  transform: rotate(-4deg);
  animation: water-ripple-flow 18s ease-in-out infinite alternate-reverse;
  pointer-events: none;
}

.closing-cta > * {
  position: relative;
  z-index: 1;
}

.closing-cta h2 {
  margin-bottom: 14px;
  font-family: "Songti SC", "STSong", "SimSun", serif;
  font-size: 34px;
  line-height: 1.2;
}

.closing-cta p {
  max-width: 780px;
  margin-bottom: 28px;
  color: var(--text);
  font-size: 17px;
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.closing-cta .button.primary {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}

.contact-link {
  color: var(--blue);
  font-weight: 800;
  border-bottom: 1px solid rgba(8, 132, 196, 0.34);
}

.site-footer {
  display: grid;
  gap: 10px;
  justify-items: center;
  padding: 38px 24px 48px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #fff;
  text-align: center;
  font-size: 13px;
}

.site-footer img {
  width: 138px;
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--blue);
  font-weight: 800;
}

.disclaimer {
  max-width: 620px;
}

.reveal-item {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 620ms ease, transform 620ms ease;
}

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

@keyframes optical-rotate {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@keyframes optical-wave-breathe {
  0% {
    opacity: 0.42;
    transform: translate(-50%, -50%) scale(0.96) rotate(-2deg);
  }
  45% {
    opacity: 0.62;
    transform: translate(-49%, -49%) scale(1.03) rotate(1deg);
  }
  100% {
    opacity: 0.5;
    transform: translate(-51%, -50%) scale(1.08) rotate(-1deg);
  }
}

@keyframes hero-light-sweep {
  0% {
    opacity: 0;
    transform: translate3d(-34%, 4%, 0) skewX(-8deg);
  }
  18% {
    opacity: 0.64;
  }
  58% {
    opacity: 0.4;
  }
  100% {
    opacity: 0;
    transform: translate3d(42%, -5%, 0) skewX(-8deg);
  }
}

@keyframes hero-wave-pulse {
  0%,
  100% {
    opacity: 0.28;
    transform: translate(-50%, -50%) scale(0.92);
  }
  45% {
    opacity: 0.54;
    transform: translate(-49%, -51%) scale(1.08);
  }
  70% {
    opacity: 0.38;
    transform: translate(-51%, -50%) scale(1.18);
  }
}

@keyframes hero-arc-drift {
  from {
    opacity: 0.38;
    transform: translate(-50%, -50%) rotate(-13deg) scaleX(0.96);
  }
  to {
    opacity: 0.62;
    transform: translate(-48%, -52%) rotate(-6deg) scaleX(1.05);
  }
}

@keyframes hero-focus-breathe {
  0%,
  100% {
    opacity: 0.34;
    transform: translate(-50%, -50%) scale(0.92);
  }
  50% {
    opacity: 0.58;
    transform: translate(-50%, -50%) scale(1.08);
  }
}

@keyframes hero-panel-focus {
  0%,
  100% {
    opacity: 0.32;
    transform: scale(0.92);
  }
  50% {
    opacity: 0.56;
    transform: scale(1.08);
  }
}

@keyframes hero-node-drift {
  from {
    transform: translate3d(-12px, 0, 0);
  }
  to {
    transform: translate3d(18px, -10px, 0);
  }
}

@keyframes spin-only {
  to {
    transform: rotate(360deg);
  }
}

@keyframes optical-line {
  0%,
  100% {
    opacity: 0.18;
    transform: translateX(0) scaleX(0.7);
  }
  50% {
    opacity: 0.72;
    transform: translateX(-32px) scaleX(1);
  }
}

@keyframes scan-field {
  from {
    transform: translateX(-24px);
  }
  to {
    transform: translateX(24px);
  }
}

@keyframes flow-scan {
  0%,
  18% {
    left: -28%;
  }
  52% {
    left: 108%;
  }
  100% {
    left: 108%;
  }
}

@keyframes flow-content-in {
  from {
    opacity: 0.9;
    filter: saturate(0.96) brightness(1.01);
    transform: translateY(3px);
  }
  to {
    opacity: 1;
    filter: saturate(1) brightness(1);
    transform: translateY(0);
  }
}

@keyframes grid-drift {
  from {
    background-position: 0 0, 0 0;
  }
  to {
    background-position: 72px 72px, 72px 72px;
  }
}

@keyframes water-ripple-flow {
  0% {
    transform: translate3d(-1.4%, -0.8%, 0) rotate(-1deg) scale(1);
  }
  50% {
    transform: translate3d(1.2%, 1%, 0) rotate(1.2deg) scale(1.025);
  }
  100% {
    transform: translate3d(0.8%, -1.2%, 0) rotate(-0.4deg) scale(1.015);
  }
}

@keyframes reticle-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(8, 132, 196, 0.2);
  }
  50% {
    box-shadow: 0 0 0 12px rgba(8, 132, 196, 0);
  }
}

@keyframes data-packet {
  0%,
  22% {
    left: -18px;
    opacity: 0;
  }
  36% {
    opacity: 1;
  }
  78% {
    left: 100%;
    opacity: 1;
  }
  100% {
    left: 100%;
    opacity: 0;
  }
}

@keyframes card-scan {
  0%,
  24% {
    left: -45%;
  }
  58% {
    left: 116%;
  }
  100% {
    left: 116%;
  }
}

@media (max-width: 980px) {
  .site-header {
    height: auto;
    min-height: 72px;
    flex-wrap: wrap;
    padding: 16px 24px;
    gap: 14px;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    gap: 18px;
    overflow-x: auto;
  }

  .nav a {
    padding: 4px 0;
    white-space: nowrap;
  }

  .header-cta {
    margin-left: auto;
  }

  .hero {
    height: auto;
    min-height: 760px;
  }

  .hero-inner,
  .intro-band,
  .section {
    width: min(100% - 48px, 1180px);
  }

  .products,
  .evidence {
    padding-left: 24px;
    padding-right: 24px;
  }

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

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

  .hero-metrics,
  .hero-inner,
  .intro-band,
  .section-heading.split,
  .value-grid,
  .product-grid,
  .flow-board,
  .platform-layout,
  .evidence-grid,
  .patent-row,
  .trust-grid,
  .ecosystem-grid {
    grid-template-columns: 1fr;
  }

  .flow-tabs {
    justify-content: flex-start;
  }

  .step-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .flow-summary,
  .step-track {
    height: auto;
  }

  .flow-summary {
    min-height: 220px;
  }

  .step-track li {
    height: auto;
    min-height: 180px;
  }

  .data-panel {
    max-width: 420px;
  }

  .cursor-reticle {
    display: none;
  }

  .signal-rail {
    display: none;
  }
}

@media (max-width: 620px) {
  .brand,
  .brand img {
    width: 124px;
  }

  .header-cta {
    min-height: 38px;
    padding: 0 12px;
    font-size: 13px;
  }

  .hero::before {
    width: 22px;
  }

  .hero::after {
    left: 22px;
    width: 4px;
  }

  .hero-inner {
    padding-top: 64px;
    width: calc(100% - 72px);
    margin-left: 48px;
    margin-right: 24px;
    display: block;
  }

  .hero-system {
    display: none;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-lede {
    font-size: 17px;
  }

  .hero-metrics {
    gap: 12px;
  }

  .value-grid {
    gap: 14px;
  }

  .value-grid article {
    min-height: 0;
    padding: 20px;
    display: grid;
    grid-template-columns: 58px 1fr;
    column-gap: 16px;
    align-items: center;
  }

  .value-grid span {
    grid-row: 1 / 3;
    align-self: start;
    font-size: 28px;
    line-height: 1;
  }

  .value-grid h3 {
    margin: 0 0 6px;
    font-size: 21px;
    line-height: 1.25;
  }

  .value-grid p {
    grid-column: 2;
    font-size: 15px;
    line-height: 1.65;
  }

  .hero-metrics div,
  .intro-band,
  .flow-board,
  .closing-cta {
    padding: 22px;
  }

  .flow-board {
    --flow-content-height: 180px;
  }

  .flow-summary {
    min-height: var(--flow-content-height);
  }

  .section {
    padding: 72px 0;
  }

  .section-heading h2 {
    font-size: 28px;
  }

  .step-track,
  .platform-stack div {
    grid-template-columns: 1fr;
  }

  .step-track li {
    height: auto;
    min-height: var(--flow-content-height);
  }

  .evidence-grid img {
    height: 210px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .hero-network,
  .cursor-reticle,
  .signal-rail,
  .site-grid,
  .water-ripples {
    display: none;
  }

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