:root {
  --ink: #171a20;
  --ink-soft: #555960;
  --paper: #f6f2ea;
  --paper-deep: #e9e3d8;
  --white: #fffdf8;
  --blue: #2852d5;
  --blue-deep: #153398;
  --coral: #ff6c52;
  --coral-soft: #ffad99;
  --mint: #b9f06a;
  --mint-deep: #75cb47;
  --yellow: #f6d75c;
  --line: rgba(23, 26, 32, 0.14);
  --font-sans: "MiSans", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Arial Black", "HarmonyOS Sans SC", "Microsoft YaHei", sans-serif;
  --shell: 1240px;
  --shadow: 0 24px 60px rgba(23, 26, 32, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

body.no-scroll {
  overflow: hidden;
}

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

button {
  font: inherit;
}

svg {
  display: block;
}

::selection {
  color: var(--ink);
  background: var(--mint);
}

.shell {
  width: min(calc(100% - 64px), var(--shell));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 15px;
  color: var(--white);
  background: var(--ink);
  border-radius: 5px;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

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

.utility-bar {
  color: rgba(255, 255, 255, 0.66);
  background: var(--ink);
  font-size: 10px;
  letter-spacing: 0.1em;
}

.utility-inner {
  display: flex;
  min-height: 33px;
  align-items: center;
  justify-content: space-between;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(246, 242, 234, 0.92);
  border-bottom: 1px solid rgba(23, 26, 32, 0.09);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 36px;
  min-height: 82px;
}

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

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--white);
  background: var(--ink);
  border-radius: 7px;
  box-shadow: inset -4px -4px 0 rgba(255, 255, 255, 0.08);
  font-size: 21px;
  font-weight: 900;
  line-height: 1;
  position: relative;
}

.brand-mark::after {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 6px;
  height: 6px;
  content: "";
  background: var(--yellow);
  border-radius: 50%;
}

.brand-copy {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.brand-copy strong {
  font-size: 17px;
  font-weight: 900;
  line-height: 1.1;
}

.brand-copy small {
  color: #777b82;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.15em;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  font-size: 13px;
  font-weight: 700;
}

.main-nav a {
  position: relative;
  padding: 29px 0;
}

.main-nav a::after {
  position: absolute;
  right: 0;
  bottom: 20px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.main-nav a:hover::after,
.main-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-cta,
.button {
  display: inline-flex;
  min-height: 47px;
  align-items: center;
  justify-content: center;
  gap: 13px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 800;
  line-height: 1;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.header-cta {
  color: var(--white);
  background: var(--ink);
}

.header-cta:hover,
.header-cta:focus-visible,
.button-dark:hover,
.button-dark:focus-visible {
  color: var(--ink);
  background: var(--mint);
  transform: translateY(-2px);
}

.header-cta svg,
.button svg,
.text-link svg,
.platform-action svg,
.back-to-top svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  place-items: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
}

.menu-toggle svg {
  grid-area: 1 / 1;
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.8;
  transition: transform 160ms ease, opacity 160ms ease;
}

.menu-toggle .close-icon {
  opacity: 0;
  transform: rotate(-45deg);
}

.menu-toggle[aria-expanded="true"] .menu-icon {
  opacity: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .close-icon {
  opacity: 1;
  transform: rotate(0);
}

.hero-home {
  overflow: hidden;
  background:
    linear-gradient(rgba(23, 26, 32, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 26, 32, 0.045) 1px, transparent 1px),
    var(--paper);
  background-position: center top;
  background-size: 72px 72px;
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  align-items: center;
  gap: 56px;
  min-height: 680px;
  padding-top: 72px;
  padding-bottom: 72px;
}

.hero-copy {
  position: relative;
  z-index: 3;
}

.eyebrow,
.section-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 22px;
  color: #64686f;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.eyebrow > span {
  width: 8px;
  height: 8px;
  background: var(--coral);
  border-radius: 50%;
  box-shadow: 14px 0 0 var(--yellow);
}

.hero-copy h1, .hero-copy h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 70px;
  font-weight: 900;
  line-height: 1.12;
}

.hero-copy h1, .hero-copy h2 span {
  position: relative;
  white-space: nowrap;
}

.hero-copy h1, .hero-copy h2 span::after {
  position: absolute;
  right: -4px;
  bottom: 5px;
  left: -4px;
  z-index: -1;
  height: 18px;
  content: "";
  background: var(--yellow);
  border-radius: 3px 9px 4px 7px;
  transform: rotate(-0.7deg);
}

.hero-lead {
  max-width: 525px;
  margin: 28px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.9;
}

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

.button-dark {
  color: var(--white);
  background: var(--ink);
  box-shadow: 0 10px 24px rgba(23, 26, 32, 0.14);
}

.button-light {
  color: var(--ink);
  background: var(--white);
}

.button-light:hover,
.button-light:focus-visible {
  background: var(--mint);
  transform: translateY(-2px);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 0;
  border-bottom: 1px solid currentColor;
  font-size: 13px;
  font-weight: 800;
}

.text-link span {
  font-size: 15px;
}

.hero-points {
  display: flex;
  gap: 20px;
  margin: 35px 0 0;
  padding: 0;
  color: #666a71;
  font-size: 11px;
  font-weight: 700;
  list-style: none;
}

.hero-points li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-points svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: var(--blue);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.2;
}

.ecosystem {
  position: relative;
  min-height: 570px;
  isolation: isolate;
}

.ecosystem::before {
  position: absolute;
  top: 44px;
  right: 20px;
  width: 365px;
  height: 365px;
  content: "";
  background: var(--yellow);
  border-radius: 50%;
}

.orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px solid rgba(23, 26, 32, 0.23);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.orbit-one {
  width: 430px;
  height: 430px;
}

.orbit-two {
  width: 520px;
  height: 520px;
  border-color: rgba(23, 26, 32, 0.11);
}

.orbit-dot {
  position: absolute;
  z-index: 2;
  width: 10px;
  height: 10px;
  background: var(--ink);
  border-radius: 50%;
}

.dot-one {
  top: 83px;
  left: 93px;
}

.dot-two {
  right: 46px;
  bottom: 103px;
  background: var(--coral);
}

.ecosystem-core {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 4;
  display: flex;
  width: 170px;
  height: 170px;
  align-items: center;
  flex-direction: column;
  justify-content: center;
  color: var(--white);
  background: var(--ink);
  border-radius: 50%;
  box-shadow: 0 24px 50px rgba(23, 26, 32, 0.2);
  transform: translate(-50%, -50%);
}

.core-mark {
  display: grid;
  width: 42px;
  height: 42px;
  margin-bottom: 12px;
  place-items: center;
  color: var(--ink);
  background: var(--mint);
  border-radius: 7px;
  font-size: 20px;
  font-weight: 900;
}

.ecosystem-core small {
  color: rgba(255, 255, 255, 0.48);
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.ecosystem-core strong {
  margin-top: 4px;
  font-size: 13px;
}

.platform-node {
  position: absolute;
  z-index: 3;
  display: flex;
  width: 210px;
  min-height: 120px;
  padding: 16px;
  flex-direction: column;
  border: 1px solid rgba(23, 26, 32, 0.15);
  border-radius: 7px;
  box-shadow: 0 20px 36px rgba(23, 26, 32, 0.14);
  transition: transform 220ms ease;
}

.platform-node:hover,
.platform-node:focus-visible {
  transform: translateY(-5px);
}

.node-172 {
  top: 28px;
  right: 28px;
  color: var(--white);
  background: var(--blue);
  transform: rotate(3deg);
}

.node-172:hover,
.node-172:focus-visible {
  transform: rotate(1deg) translateY(-5px);
}

.node-cat {
  top: 258px;
  left: 5px;
  background: var(--coral);
  transform: rotate(-3deg);
}

.node-cat:hover,
.node-cat:focus-visible {
  transform: rotate(-1deg) translateY(-5deg);
}

.node-billion {
  right: 20px;
  bottom: 7px;
  background: var(--mint);
  transform: rotate(2deg);
}

.node-billion:hover,
.node-billion:focus-visible {
  transform: rotate(0) translateY(-5deg);
}

.node-index {
  margin-bottom: auto;
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.12em;
  opacity: 0.58;
}

.node-mark {
  margin: 11px 0 4px;
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 900;
  line-height: 0.9;
}

.node-mark span {
  color: var(--mint);
  font-size: 19px;
  vertical-align: top;
}

.node-mark-billion {
  color: var(--ink);
  font-size: 43px;
}

.node-icon {
  width: 41px;
  height: 35px;
  margin: 11px 0 7px;
}

.node-icon svg,
.cat-symbol {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 4.5;
}

.platform-node strong {
  font-size: 19px;
  font-weight: 900;
}

.platform-node small {
  margin-top: 4px;
  font-size: 9px;
  font-weight: 700;
  opacity: 0.68;
}

.ecosystem-note {
  position: absolute;
  bottom: 105px;
  left: 17px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 10px;
}

.ecosystem-note span {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 900;
  line-height: 1;
}

.ecosystem-note p {
  margin: 0;
  color: #696c73;
  font-size: 7px;
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: 0.12em;
}

.fact-band {
  border-top: 1px solid var(--line);
  background: rgba(255, 253, 248, 0.72);
}

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

.fact-grid > div {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 5px 14px;
  min-height: 118px;
  padding: 24px 32px;
}

.fact-grid > div + div {
  border-left: 1px solid var(--line);
}

.fact-grid strong {
  grid-row: 1 / 3;
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 900;
  line-height: 1;
}

.fact-grid span {
  font-size: 13px;
  font-weight: 900;
}

.fact-grid small {
  color: #777b82;
  font-size: 9px;
  line-height: 1.5;
}

.section {
  padding: 114px 0;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 390px;
  align-items: end;
  gap: 64px;
  margin-bottom: 50px;
}

.section-kicker {
  margin-bottom: 18px;
}

.section-kicker span {
  display: grid;
  width: 29px;
  height: 20px;
  place-items: center;
  color: var(--ink);
  background: var(--mint);
  border-radius: 3px;
  font-size: 9px;
  letter-spacing: 0;
}

.section-heading h2,
.capability-intro h2,
.group-copy h2,
.agency-cta h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 55px;
  font-weight: 900;
  line-height: 1.16;
}

.heading-side > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.85;
}

.heading-side .text-link {
  margin-top: 22px;
}

.platforms-section {
  background: var(--white);
}

.primary-platform {
  display: grid;
  grid-template-columns: 1.03fr 0.97fr;
  min-height: 510px;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 82% 8%, rgba(118, 152, 255, 0.52), transparent 31%),
    var(--blue);
  border-radius: 8px;
}

.primary-copy {
  display: flex;
  padding: 34px;
  flex-direction: column;
  justify-content: center;
}

.platform-meta,
.secondary-head,
.company-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.13em;
  opacity: 0.7;
}

.meta-badge {
  padding: 6px 9px;
  color: var(--ink);
  background: var(--yellow);
  border-radius: 999px;
  font-size: 8px;
  letter-spacing: 0;
  opacity: 1;
}

.platform-type {
  margin: 34px 0 7px;
  color: var(--mint);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.09em;
}

.primary-copy h3,
.secondary-body h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 900;
  line-height: 1;
}

.platform-desc {
  max-width: 550px;
  margin: 21px 0 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  line-height: 1.85;
}

.capability-tags {
  display: flex;
  margin-top: 24px;
  flex-wrap: wrap;
  gap: 7px;
}

.capability-tags span {
  padding: 7px 9px;
  border: 1px solid currentColor;
  border-radius: 4px;
  font-size: 9px;
  font-weight: 700;
  opacity: 0.68;
}

.platform-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100%, 360px);
  min-height: 48px;
  margin-top: 30px;
  padding: 0 14px;
  border: 1px solid currentColor;
  border-radius: 5px;
  font-size: 11px;
  font-weight: 800;
}

.primary-art {
  position: relative;
  min-height: 480px;
}

.big-card {
  position: absolute;
  width: 350px;
  height: 220px;
  overflow: hidden;
  border-radius: 15px;
  box-shadow: 0 32px 50px rgba(15, 24, 67, 0.36);
}

.card-back {
  top: 106px;
  left: 50%;
  background: rgba(9, 26, 80, 0.58);
  border: 1px solid rgba(255, 255, 255, 0.15);
  transform: translateX(-46%) rotate(10deg);
}

.card-back span {
  display: block;
  margin: 25px;
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 900;
  opacity: 0.36;
}

.card-front {
  top: 185px;
  left: 50%;
  display: flex;
  padding: 24px;
  flex-direction: column;
  justify-content: space-between;
  background:
    radial-gradient(circle at 82% 10%, rgba(255, 255, 255, 0.25), transparent 25%),
    linear-gradient(140deg, #102e91, #2450d0);
  border: 1px solid rgba(255, 255, 255, 0.22);
  transform: translateX(-50%) rotate(-5deg);
}

.contactless {
  align-self: flex-end;
  width: 24px;
  height: 24px;
  opacity: 0.7;
}

.contactless svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.4;
}

.card-front strong {
  margin-top: 35px;
  font-family: var(--font-display);
  font-size: 63px;
  line-height: 0.85;
}

.card-front strong span {
  color: var(--mint);
  font-size: 30px;
  vertical-align: top;
}

.card-front small {
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.15em;
  opacity: 0.62;
}

.art-ring {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
}

.ring-one {
  top: 53px;
  left: 48%;
  width: 400px;
  height: 400px;
  transform: translateX(-50%);
}

.ring-two {
  top: 5px;
  left: 48%;
  width: 500px;
  height: 500px;
  transform: translateX(-50%);
  opacity: 0.5;
}

.art-chip {
  position: absolute;
  right: 26px;
  bottom: 24px;
  padding: 9px 12px;
  color: var(--ink);
  background: var(--yellow);
  border-radius: 4px;
  font-size: 8px;
  font-weight: 900;
}

.secondary-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 18px;
}

.secondary-platform {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  overflow: hidden;
  min-height: 430px;
  border-radius: 8px;
}

.secondary-cat {
  background: var(--coral);
}

.secondary-billion {
  background: var(--mint);
}

.secondary-head {
  grid-column: 1 / -1;
  padding: 22px 24px 0;
  color: var(--ink);
  opacity: 0.58;
}

.secondary-head .meta-badge {
  background: rgba(255, 253, 248, 0.38);
  border: 1px solid rgba(23, 26, 32, 0.12);
}

.secondary-art {
  position: relative;
  min-height: 340px;
  overflow: hidden;
}

.cat-art {
  color: var(--ink);
}

.cat-orb {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 240px;
  height: 240px;
  background: var(--coral-soft);
  border: 1px solid rgba(23, 26, 32, 0.15);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.cat-orb::after {
  position: absolute;
  inset: 33px;
  content: "";
  border: 1px solid rgba(23, 26, 32, 0.16);
  border-radius: 50%;
}

.cat-symbol {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 115px;
  height: 95px;
  transform: translate(-50%, -54%);
}

.wifi-label {
  position: absolute;
  right: 16px;
  bottom: 25px;
  padding: 7px 9px;
  background: var(--yellow);
  border-radius: 3px;
  font-size: 8px;
  font-weight: 900;
}

.billion-art {
  color: var(--ink);
}

.billion-circle {
  position: absolute;
  top: 48%;
  left: 50%;
  display: grid;
  width: 250px;
  height: 250px;
  place-items: center;
  border: 1px solid rgba(23, 26, 32, 0.14);
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 140px;
  font-weight: 900;
  line-height: 1;
  opacity: 0.11;
  transform: translate(-50%, -50%);
}

.billion-sim {
  position: absolute;
  top: 50%;
  left: 50%;
  display: flex;
  width: 220px;
  height: 140px;
  padding: 16px;
  flex-direction: column;
  justify-content: space-between;
  background: #f4ffd9;
  border: 1px solid rgba(23, 26, 32, 0.17);
  border-radius: 10px;
  box-shadow: 0 22px 36px rgba(23, 26, 32, 0.16);
  transform: translate(-50%, -53%) rotate(-5deg);
}

.billion-sim span,
.billion-sim small {
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.14em;
  opacity: 0.55;
}

.billion-sim strong {
  font-family: var(--font-display);
  font-size: 32px;
}

.secondary-body {
  display: flex;
  padding: 24px 24px 26px 4px;
  flex-direction: column;
  justify-content: center;
}

.secondary-body .platform-type {
  margin-top: 0;
  color: var(--ink);
  opacity: 0.58;
}

.secondary-body h3 {
  font-size: 49px;
}

.secondary-body > p:not(.platform-type) {
  margin: 18px 0 0;
  color: rgba(23, 26, 32, 0.68);
  font-size: 12px;
  line-height: 1.8;
}

.secondary-body .capability-tags {
  margin-top: 19px;
}

.secondary-body .platform-action {
  min-height: 45px;
  margin-top: 22px;
}

.capability-section {
  color: var(--white);
  background:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    var(--ink);
  background-size: 70px 70px;
}

.capability-intro {
  display: grid;
  grid-template-columns: 1fr 410px;
  align-items: end;
  gap: 70px;
  margin-bottom: 56px;
}

.section-kicker.light {
  color: rgba(255, 255, 255, 0.55);
}

.section-kicker.light span {
  color: var(--ink);
  background: var(--yellow);
}

.capability-intro h2 {
  font-size: 53px;
}

.capability-intro > p {
  margin: 0 0 3px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 14px;
  line-height: 1.85;
}

.capability-list {
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.capability-list article {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  align-items: center;
  gap: 30px;
  min-height: 170px;
  padding: 28px 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.capability-index {
  color: var(--mint);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.capability-list article p {
  margin: 0;
  color: rgba(255, 255, 255, 0.48);
  font-size: 11px;
}

.capability-list article h3 {
  margin: 7px 0 8px;
  font-family: var(--font-display);
  font-size: 31px;
  font-weight: 900;
}

.capability-list article div > p:last-child {
  max-width: 650px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
  line-height: 1.8;
}

.capability-tag {
  padding: 8px 10px;
  color: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 4px;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

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

.group-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  align-items: center;
  gap: 80px;
}

.group-copy h2 {
  font-size: 54px;
}

.group-copy > p:not(.section-kicker) {
  max-width: 490px;
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.9;
}

.group-copy .text-link {
  margin-top: 25px;
}

.company-panel {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.company-panel-head {
  color: #7e8188;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  opacity: 1;
}

.company-panel article {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  align-items: center;
  gap: 15px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.company-mark {
  display: grid;
  width: 45px;
  height: 45px;
  place-items: center;
  color: var(--white);
  background: var(--blue);
  border-radius: 6px;
  font-size: 18px;
  font-weight: 900;
}

.company-mark-green {
  color: var(--ink);
  background: var(--coral);
}

.company-panel article h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 900;
}

.company-panel article p {
  margin: 5px 0 0;
  color: #898c92;
  font-size: 10px;
}

.company-index {
  color: #a4a6aa;
  font-family: var(--font-display);
  font-size: 13px;
}

.company-bridge {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 22px;
}

.company-bridge > span {
  height: 1px;
  flex: 1;
  background: var(--line);
}

.company-bridge p {
  margin: 0;
  color: #8c8f95;
  font-size: 7px;
  font-weight: 800;
  letter-spacing: 0.11em;
}

.agency-cta {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background: var(--coral);
}

.agency-cta::before {
  position: absolute;
  top: -185px;
  right: -90px;
  width: 500px;
  height: 500px;
  content: "";
  border: 1px solid rgba(23, 26, 32, 0.18);
  border-radius: 50%;
  box-shadow: 0 0 0 60px rgba(255, 255, 255, 0.09), 0 0 0 120px rgba(255, 255, 255, 0.055);
}

.cta-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 60px;
  min-height: 370px;
  padding-top: 75px;
  padding-bottom: 68px;
}

.cta-grid > div:first-child > p {
  margin: 0 0 19px;
  color: rgba(23, 26, 32, 0.62);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.agency-cta h2 {
  color: var(--ink);
  font-size: 66px;
}

.cta-copy {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 30px;
  padding-bottom: 5px;
}

.cta-copy > p {
  max-width: 250px;
  margin: 0;
  color: rgba(23, 26, 32, 0.88);
  font-size: 13px;
  line-height: 1.75;
}

.cta-copy .button {
  min-width: 150px;
}

.cta-word {
  position: absolute;
  right: 0;
  bottom: -22px;
  z-index: 1;
  color: transparent;
  font-family: var(--font-display);
  font-size: 142px;
  font-weight: 900;
  line-height: 1;
  opacity: 0.14;
  -webkit-text-stroke: 1px rgba(23, 26, 32, 0.7);
}

.site-footer {
  color: rgba(255, 255, 255, 0.7);
  background: var(--ink);
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: start;
  gap: 75px;
  padding-top: 62px;
  padding-bottom: 52px;
}

.brand-footer {
  color: var(--white);
}

.brand-footer .brand-mark {
  color: var(--ink);
  background: var(--mint);
}

.footer-brand > p {
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.42);
  font-size: 11px;
}

.footer-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 42px;
  font-size: 11px;
}

.footer-nav a:hover,
.footer-nav a:focus-visible,
.back-to-top:hover,
.back-to-top:focus-visible {
  color: var(--mint);
}

.back-to-top {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 10px;
  font-weight: 800;
}

.back-to-top svg {
  width: 15px;
  height: 15px;
}

.footer-bottom {
  display: grid;
  gap: 7px;
  padding-top: 21px;
  padding-bottom: 23px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-bottom p {
  margin: 0;
  color: rgba(255, 255, 255, 0.34);
  font-size: 8px;
  line-height: 1.7;
}

.footer-sources {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-sources a {
  color: rgba(255, 255, 255, 0.58);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.footer-contact {
  display: flex;
  align-items: center;
  gap: 7px;
  color: rgba(255, 255, 255, 0.58) !important;
}

.footer-contact a,
.footer-contact button {
  padding: 0;
  color: var(--mint);
  background: transparent;
  border: 0;
  font-size: inherit;
  font-weight: 800;
  cursor: pointer;
}

.contact-dock {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 120;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 7px;
  color: var(--white);
  background: rgba(23, 26, 32, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  box-shadow: 0 18px 38px rgba(23, 26, 32, 0.24);
  backdrop-filter: blur(12px);
}

.contact-dock-label {
  padding: 0 9px;
  color: rgba(255, 255, 255, 0.42);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.contact-dock > a,
.contact-dock > button {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  gap: 7px;
  padding: 0 11px;
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 5px;
  font-size: 10px;
  font-weight: 800;
  white-space: nowrap;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
}

.contact-dock > a:hover,
.contact-dock > a:focus-visible,
.contact-dock > button:hover,
.contact-dock > button:focus-visible {
  color: var(--ink);
  background: var(--mint);
}

.contact-dock > button.is-copied {
  color: var(--ink);
  background: var(--mint);
}

.contact-dock svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.js .reveal-target {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 520ms ease, transform 520ms ease;
}

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

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

@media (max-width: 1120px) {
  .header-inner {
    gap: 24px;
  }

  .main-nav {
    gap: 22px;
  }

  .hero-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 24px;
  }

  .hero-copy h1, .hero-copy h2 {
    font-size: 59px;
  }

  .ecosystem {
    transform: scale(0.94);
    transform-origin: center right;
  }

  .section-heading h2,
  .capability-intro h2,
  .group-copy h2 {
    font-size: 48px;
  }

  .primary-copy h3 {
    font-size: 56px;
  }

  .big-card {
    width: 305px;
    height: 192px;
  }

  .card-front strong {
    font-size: 54px;
  }

  .secondary-platform {
    grid-template-columns: 0.78fr 1.22fr;
  }
}

@media (max-width: 980px) {
  .shell {
    width: min(calc(100% - 40px), var(--shell));
  }

  .header-inner {
    grid-template-columns: 1fr auto auto;
    min-height: 72px;
  }

  .main-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    left: 0;
    display: none;
    padding: 22px 20px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 30px rgba(23, 26, 32, 0.08);
  }

  .main-nav.is-open {
    display: grid;
    gap: 0;
  }

  .main-nav a {
    padding: 15px 0;
    border-bottom: 1px solid var(--line);
  }

  .main-nav a::after {
    display: none;
  }

  .menu-toggle {
    display: grid;
  }

  .header-cta {
    min-height: 42px;
    padding: 0 15px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-top: 68px;
    padding-bottom: 36px;
  }

  .hero-copy h1, .hero-copy h2 {
    font-size: 62px;
  }

  .ecosystem {
    width: min(100%, 650px);
    min-height: 560px;
    margin-inline: auto;
    transform: none;
  }

  .fact-grid > div {
    padding-inline: 20px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 22px;
    margin-bottom: 38px;
  }

  .heading-side {
    max-width: 620px;
  }

  .primary-platform {
    grid-template-columns: 1fr;
  }

  .primary-art {
    min-height: 405px;
  }

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

  .secondary-platform {
    grid-template-columns: 0.85fr 1.15fr;
  }

  .capability-intro {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .capability-intro > p {
    max-width: 600px;
  }

  .group-layout {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .company-panel {
    width: min(100%, 720px);
  }

  .cta-grid {
    grid-template-columns: 1fr;
    gap: 30px;
    min-height: 410px;
  }

  .cta-copy {
    justify-content: space-between;
  }

  .footer-main {
    grid-template-columns: 1fr auto;
    gap: 38px;
  }

  .back-to-top {
    grid-column: 2;
    grid-row: 1;
    align-self: center;
  }

  .footer-nav {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  body {
    padding-bottom: 66px;
  }

  .shell {
    width: min(calc(100% - 32px), var(--shell));
  }

  .utility-inner {
    justify-content: center;
    min-height: 30px;
  }

  .utility-note {
    display: none;
  }

  .header-inner {
    grid-template-columns: 1fr auto;
    min-height: 66px;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 18px;
  }

  .brand-copy strong {
    font-size: 15px;
  }

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

  .header-cta {
    display: none;
  }

  .hero-grid {
    padding-top: 49px;
    padding-bottom: 12px;
  }

  .eyebrow {
    font-size: 8px;
  }

  .hero-copy h1, .hero-copy h2 {
    font-size: 43px;
    line-height: 1.16;
  }

  .hero-copy h1, .hero-copy h2 span {
    white-space: normal;
  }

  .hero-copy h1, .hero-copy h2 span::after {
    bottom: 2px;
    height: 12px;
  }

  .hero-lead {
    margin-top: 22px;
    font-size: 13px;
    line-height: 1.8;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    margin-top: 28px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-points {
    flex-wrap: wrap;
    gap: 10px 15px;
    margin-top: 26px;
  }

  .ecosystem {
    min-height: 445px;
    margin-top: 8px;
  }

  .ecosystem::before {
    top: 40px;
    right: 0;
    width: 260px;
    height: 260px;
  }

  .orbit-one {
    width: 320px;
    height: 320px;
  }

  .orbit-two {
    width: 390px;
    height: 390px;
  }

  .ecosystem-core {
    width: 122px;
    height: 122px;
  }

  .core-mark {
    width: 32px;
    height: 32px;
    margin-bottom: 7px;
    font-size: 16px;
  }

  .ecosystem-core strong {
    font-size: 10px;
  }

  .platform-node {
    width: 164px;
    min-height: 100px;
    padding: 12px;
  }

  .node-172 {
    top: 13px;
    right: 0;
  }

  .node-cat {
    top: 191px;
    left: 0;
  }

  .node-billion {
    right: 1px;
    bottom: 3px;
  }

  .platform-node strong {
    font-size: 16px;
  }

  .platform-node small {
    font-size: 8px;
  }

  .node-mark {
    font-size: 30px;
  }

  .ecosystem-note {
    bottom: 110px;
    left: 4px;
  }

  .ecosystem-note span {
    font-size: 33px;
  }

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

  .fact-grid > div {
    min-height: 86px;
    padding: 16px 2px;
  }

  .fact-grid > div + div {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .fact-grid strong {
    font-size: 35px;
  }

  .section {
    padding: 74px 0;
  }

  .section-heading h2,
  .capability-intro h2,
  .group-copy h2 {
    font-size: 38px;
  }

  .primary-copy {
    padding: 25px 20px;
  }

  .primary-copy h3 {
    font-size: 48px;
  }

  .platform-desc {
    font-size: 13px;
  }

  .primary-art {
    min-height: 330px;
  }

  .big-card {
    width: 250px;
    height: 158px;
  }

  .card-back {
    top: 57px;
  }

  .card-front {
    top: 111px;
    padding: 17px;
  }

  .card-front strong {
    margin-top: 20px;
    font-size: 44px;
  }

  .art-chip {
    right: 15px;
    bottom: 15px;
  }

  .ring-one {
    top: 20px;
    width: 310px;
    height: 310px;
  }

  .ring-two {
    width: 380px;
    height: 380px;
  }

  .secondary-platform {
    grid-template-columns: 1fr;
  }

  .secondary-art {
    min-height: 260px;
  }

  .secondary-body {
    padding: 4px 20px 24px;
  }

  .secondary-body h3 {
    font-size: 42px;
  }

  .cat-orb,
  .billion-circle {
    width: 205px;
    height: 205px;
  }

  .cat-symbol {
    width: 92px;
    height: 76px;
  }

  .billion-sim {
    width: 190px;
    height: 124px;
  }

  .capability-intro {
    margin-bottom: 38px;
  }

  .capability-list article {
    grid-template-columns: 32px 1fr;
    gap: 14px;
    padding: 24px 0;
  }

  .capability-list article h3 {
    font-size: 25px;
  }

  .capability-tag {
    display: none;
  }

  .group-layout {
    gap: 34px;
  }

  .company-panel {
    padding: 18px;
  }

  .company-panel article {
    grid-template-columns: 42px 1fr;
  }

  .company-mark {
    width: 40px;
    height: 40px;
  }

  .company-panel article h3 {
    font-size: 14px;
  }

  .company-index {
    display: none;
  }

  .company-bridge p {
    font-size: 6px;
  }

  .cta-grid {
    min-height: 430px;
    padding-top: 62px;
    padding-bottom: 54px;
  }

  .agency-cta h2 {
    font-size: 44px;
  }

  .cta-copy {
    align-items: flex-start;
    flex-direction: column;
    gap: 20px;
  }

  .cta-copy .button {
    width: 100%;
  }

  .cta-word {
    right: -22px;
    bottom: 1px;
    font-size: 83px;
  }

  .footer-main {
    grid-template-columns: 1fr auto;
    gap: 29px;
    padding-top: 45px;
    padding-bottom: 34px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-nav {
    grid-column: 1 / -1;
    gap: 14px 24px;
  }

  .back-to-top {
    grid-column: 2;
    grid-row: 2;
  }

  .footer-bottom {
    padding-top: 18px;
    padding-bottom: 20px;
  }

  .contact-dock {
    right: 0;
    bottom: 0;
    left: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: 0;
  }

  .contact-dock-label {
    display: none;
  }

  .contact-dock > a,
  .contact-dock > button {
    min-height: 39px;
    justify-content: center;
    font-size: 10px;
  }
}

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

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

.fact-grid strong span {
  font-size: 22px;
  font-weight: 900;
}

.fact-note {
  margin: 0;
  padding: 0 32px 18px;
  color: #8b8f96;
  font-size: 9px;
  line-height: 1.6;
  letter-spacing: 0.02em;
}

@media (max-width: 980px) {
  .fact-note {
    padding: 0 24px 16px;
  }
}

@media (max-width: 640px) {
  .fact-grid strong {
    font-size: 34px;
  }

  .fact-grid strong span {
    font-size: 17px;
  }

  .fact-grid > div {
    min-height: 96px;
    padding: 18px 20px;
  }

  .fact-note {
    padding: 0 20px 14px;
    font-size: 8.5px;
  }
}

/* ============ 注册入口 / REGISTER ============ */
.register-section {
  background: var(--paper-deep);
}

.register-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.register-card {
  display: flex;
  padding: 28px 26px 26px;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.register-card.is-primary {
  color: var(--white);
  background:
    radial-gradient(circle at 88% 2%, rgba(118, 152, 255, 0.5), transparent 38%),
    var(--blue);
  border-color: transparent;
}

.register-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.register-index {
  color: rgba(23, 26, 32, 0.42);
}

.register-card.is-primary .register-index {
  color: rgba(255, 255, 255, 0.62);
}

.register-flag {
  padding: 5px 9px;
  color: var(--ink);
  background: var(--mint);
  border-radius: 3px;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.register-card:not(.is-primary) .register-flag {
  background: var(--paper-deep);
}

.register-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 30px;
  line-height: 1.15;
}

.register-desc {
  margin: 12px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.8;
}

.register-card.is-primary .register-desc {
  color: rgba(255, 255, 255, 0.82);
}

.register-code {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 22px 0 0;
  padding: 12px 14px;
  background: rgba(23, 26, 32, 0.05);
  border-radius: 6px;
}

.register-card.is-primary .register-code {
  background: rgba(255, 255, 255, 0.14);
}

.register-code span {
  color: var(--ink-soft);
  font-size: 11px;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.register-card.is-primary .register-code span {
  color: rgba(255, 255, 255, 0.72);
}

.register-code strong {
  margin-left: auto;
  font-family: "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.03em;
  word-break: break-all;
}

.register-code strong.is-long {
  font-size: 11.5px;
  letter-spacing: 0;
}

.register-copy {
  flex: none;
  padding: 4px 7px;
  color: inherit;
  background: transparent;
  border: 1px solid currentColor;
  border-radius: 3px;
  font-size: 10px;
  line-height: 1.3;
  opacity: 0.5;
  cursor: pointer;
  transition: opacity 160ms ease;
}

.register-copy:hover,
.register-copy:focus-visible {
  opacity: 1;
}

.register-copy.is-copied {
  opacity: 1;
  background: var(--mint);
  border-color: var(--mint);
  color: var(--ink);
}

.register-btn {
  display: inline-flex;
  min-height: 47px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
  padding: 0 18px;
  color: var(--white);
  background: var(--ink);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.register-btn:hover,
.register-btn:focus-visible {
  color: var(--ink);
  background: var(--mint);
  transform: translateY(-2px);
}

.register-card.is-primary .register-btn {
  color: var(--ink);
  background: var(--mint);
}

.register-card.is-primary .register-btn:hover,
.register-card.is-primary .register-btn:focus-visible {
  color: var(--white);
  background: var(--ink);
}

.register-btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.register-note {
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.8;
}

@media (max-width: 980px) {
  .register-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .register-card {
    padding: 24px 22px 22px;
  }
}

@media (max-width: 640px) {
  .register-card h3 {
    font-size: 26px;
  }

  .register-code strong {
    font-size: 15px;
  }

  .register-code strong.is-long {
    font-size: 10.5px;
  }
}

/* 首屏邀请码提示 */
.hero-code {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 26px 0 -18px;
  padding: 7px 12px;
  color: var(--ink);
  background: rgba(185, 240, 106, 0.45);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
}

.hero-code strong {
  font-family: "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 13px;
  letter-spacing: 0.04em;
}

@media (max-width: 640px) {
  .hero-code {
    margin: 22px 0 -10px;
    font-size: 11px;
  }
}

/* 导航：全站入口同时存在 */
.main-nav {
  gap: 24px;
  font-size: 12.5px;
  white-space: nowrap;
}

.main-nav a {
  white-space: nowrap;
}

.main-nav a.is-current::after {
  transform: scaleX(1);
  transform-origin: left;
}

@media (max-width: 1280px) {
  .main-nav {
    gap: 17px;
    font-size: 12px;
  }
}

@media (max-width: 1120px) {
  .main-nav {
    gap: 13px;
    font-size: 11.5px;
  }
}

/* 顶栏：三平台注册直连（全站常驻） */
.utility-links {
  display: flex;
  align-items: center;
  gap: 14px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 10px;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.utility-links a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: inherit;
  transition: color 160ms ease;
}

.utility-links a::before {
  width: 4px;
  height: 4px;
  content: "";
  background: var(--mint);
  border-radius: 50%;
}

.utility-links a:first-child {
  color: var(--mint);
  font-weight: 700;
}

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

@media (max-width: 900px) {
  .utility-inner {
    gap: 12px;
    font-size: 9.5px;
  }

  .utility-links {
    gap: 10px;
    font-size: 9.5px;
    letter-spacing: 0;
  }

  .utility-links a::before {
    display: none;
  }
}

@media (max-width: 640px) {
  .utility-inner > span:first-child {
    display: none;
  }

  .utility-inner {
    justify-content: center;
  }
}

/* ============ 移动端顶部 172 注册条 ============ */
.mobile-cta {
  display: none;
}

@media (max-width: 980px) {
  .mobile-cta {
    position: sticky;
    top: 72px;
    z-index: 70;
    display: flex;
    min-height: 50px;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 0 18px;
    color: var(--ink);
    background: var(--mint);
    border-bottom: 1px solid rgba(23, 26, 32, 0.14);
    font-size: 13.5px;
    font-weight: 800;
    letter-spacing: 0.02em;
  }

  .mobile-cta em {
    font-style: normal;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0;
    opacity: 0.62;
  }

  .mobile-cta svg {
    width: 17px;
    height: 17px;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 2;
  }
}

@media (max-width: 640px) {
  .mobile-cta {
    top: 66px;
  }
}

/* ============ 无邀请码平台：点击立即注册 ============ */
.register-cta {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: auto;
  padding: 0 18px;
  color: var(--white);
  background: var(--ink);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease, color 180ms ease;
}

.register-cta:hover,
.register-cta:focus-visible {
  color: var(--ink);
  background: var(--mint);
  transform: translateY(-2px);
}

.register-cta svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.register-card:not(.is-primary) .register-desc {
  margin-bottom: 22px;
}

@media (max-width: 980px) {
  body.is-menu-open .mobile-cta {
    display: none;
  }
}


/* ============ 首页顶部 172号卡品牌注册区 ============ */
.brand-entry {
  position: relative;
  overflow: hidden;
  padding: 58px 0 52px;
  border-bottom: 1px solid rgba(23, 26, 32, 0.08);
  background:
    radial-gradient(52% 60% at 14% 4%, #cfe2ff 0%, rgba(255, 255, 255, 0) 62%),
    radial-gradient(46% 56% at 88% 8%, #ecd9ff 0%, rgba(255, 255, 255, 0) 64%),
    radial-gradient(60% 62% at 50% 104%, #e2f3ff 0%, rgba(255, 255, 255, 0) 72%),
    linear-gradient(180deg, #fdfdff 0%, #f7f9ff 46%, #fbf7ff 100%);
}

.brand-entry::before {
  position: absolute;
  top: -30px;
  left: 50%;
  width: min(860px, 94%);
  height: 400px;
  content: "";
  background: radial-gradient(closest-side, rgba(150, 120, 255, 0.22), rgba(120, 160, 255, 0.14) 55%, rgba(255, 255, 255, 0) 78%);
  filter: blur(10px);
  transform: translateX(-50%);
  pointer-events: none;
}

.brand-entry-inner {
  position: relative;
  display: flex;
  width: min(calc(100% - 48px), 760px);
  flex-direction: column;
  align-items: center;
  margin-inline: auto;
  text-align: center;
}

.be-logo {
  width: auto;
  height: 150px;
  filter: drop-shadow(0 16px 24px rgba(24, 62, 140, 0.22)) drop-shadow(0 3px 8px rgba(24, 62, 140, 0.14));
}

.be-title {
  margin: 16px 0 0;
  background: linear-gradient(92deg, #4b74ee 0%, #6a5cf0 48%, #b44df0 100%);
  background-clip: text;
  color: transparent;
  font-family: var(--font-display);
  font-size: 60px;
  font-weight: 900;
  letter-spacing: 2px;
  line-height: 1.06;
  -webkit-background-clip: text;
  filter: drop-shadow(0 5px 12px rgba(120, 90, 220, 0.14));
}

.be-sub {
  margin: 8px 0 0;
  color: #12141a;
  font-family: var(--font-display);
  font-size: 46px;
  font-weight: 900;
  letter-spacing: 2px;
  line-height: 1.14;
}

.be-code {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  margin: 18px 0 0;
  padding: 10px 26px 12px;
  color: #41454e;
  background: linear-gradient(180deg, #f1f3fb 0%, #e7ebf8 100%);
  border: 1px solid #d9e0f3;
  border-radius: 999px;
  box-shadow: 0 8px 20px rgba(74, 99, 224, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.9);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.be-code strong {
  background: linear-gradient(92deg, #4b74ee 0%, #6a5cf0 55%, #a04ce8 100%);
  background-clip: text;
  color: transparent;
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 900;
  letter-spacing: 0.1em;
  line-height: 1;
  -webkit-background-clip: text;
}

.be-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 28px;
}

.be-btn {
  display: inline-flex;
  min-width: 152px;
  height: 54px;
  align-items: center;
  justify-content: center;
  padding: 0 28px;
  color: #fff;
  background: linear-gradient(180deg, #6d84f5 0%, #5a6ee6 58%, #4e5fd9 100%);
  border-radius: 999px;
  box-shadow: 0 10px 22px rgba(74, 99, 224, 0.24), inset 0 2px 0 rgba(255, 255, 255, 0.26);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.06em;
  transition: transform 180ms ease, box-shadow 180ms ease, filter 180ms ease;
}

.be-btn:hover,
.be-btn:focus-visible {
  filter: brightness(1.06);
  transform: translateY(-2px);
  box-shadow: 0 16px 30px rgba(74, 99, 224, 0.3), inset 0 2px 0 rgba(255, 255, 255, 0.3);
}

.be-contact {
  display: inline-flex;
  height: 46px;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 0 26px;
  color: #3f4249;
  background: #e7e8ec;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: background 160ms ease, color 160ms ease;
}

.be-contact.is-copied {
  color: #2f6b3a;
  background: #d9eedd;
}

.be-contact:hover,
.be-contact:focus-visible {
  color: var(--ink);
  background: #dbdde3;
}

.be-contact svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

@media (max-width: 980px) {
  .brand-entry {
    padding: 44px 0 40px;
  }

  .be-logo {
    width: auto;
    height: 118px;
  }

  .be-title {
    margin-top: 12px;
    font-size: 42px;
  }

  .be-sub {
    font-size: 32px;
  }

  .be-code {
    margin-top: 14px;
    padding: 8px 20px 10px;
    gap: 8px;
    font-size: 17px;
  }

  .be-code strong {
    font-size: 28px;
  }

  .be-actions {
    margin-top: 24px;
    gap: 12px;
  }

  .be-btn {
    min-width: 132px;
    height: 50px;
    padding: 0 22px;
    font-size: 15px;
  }
}

@media (max-width: 640px) {
  .brand-entry {
    padding: 34px 0 32px;
  }

  .brand-entry-inner {
    width: min(calc(100% - 36px), 760px);
  }

  .be-logo {
    width: auto;
    height: 96px;
  }

  .be-title {
    margin-top: 10px;
    font-size: 32px;
    letter-spacing: 1px;
  }

  .be-sub {
    margin-top: 5px;
    font-size: 24px;
    letter-spacing: 1px;
  }

  .be-code {
    margin-top: 12px;
    padding: 7px 16px 9px;
    gap: 6px;
    font-size: 14px;
  }

  .be-code strong {
    font-size: 24px;
    letter-spacing: 0.06em;
  }

  .be-actions {
    width: 100%;
    flex-wrap: nowrap;
    gap: 8px;
    margin-top: 20px;
  }

  .be-btn {
    width: 100%;
    min-width: 0;
    flex: 1 1 0;
    height: 52px;
    padding: 0 6px;
    font-size: 15px;
    letter-spacing: 0.02em;
  }

  .be-contact {
    width: 100%;
    height: 46px;
    justify-content: center;
    margin-top: 10px;
    font-size: 13px;
  }}


/* ============ 集团标识（logo 原图） ============ */
.brand-logo {
  display: block;
  width: auto;
  height: 40px;
  flex: none;
  filter: drop-shadow(0 4px 8px rgba(21, 51, 152, 0.16));
}

.brand-footer .brand-logo {
  height: 40px;
  padding: 4px 6px;
  background: var(--white);
  border-radius: 8px;
  filter: none;
}

@media (max-width: 640px) {
  .brand-logo {
    height: 34px;
  }

  .brand-footer .brand-logo {
    height: 34px;
  }
}

/* ============ 集团首页 group.html ============ */
.gp-hero {
  position: relative;
  overflow: hidden;
  padding: 78px 0 74px;
  background:
    radial-gradient(46% 60% at 12% 6%, #dbe7ff 0%, rgba(255, 255, 255, 0) 62%),
    radial-gradient(42% 54% at 86% 12%, #e6dcff 0%, rgba(255, 255, 255, 0) 64%),
    linear-gradient(180deg, #fdfdff 0%, #f7f8fd 60%, #f6f2ea 100%);
  border-bottom: 1px solid rgba(23, 26, 32, 0.08);
}

.gp-hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 60px;
}

.gp-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: 74px;
  font-weight: 900;
  letter-spacing: 2px;
  line-height: 1.04;
}

.gp-hero-sub {
  margin: 14px 0 0;
  color: #2f333b;
  font-size: 25px;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.gp-lead {
  max-width: 34em;
  margin: 18px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.9;
}

.gp-lead strong {
  color: var(--ink);
  font-weight: 800;
}

.gp-actions {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-top: 32px;
}

.gp-hero-visual {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 330px;
}

.gp-emblem {
  display: grid;
  width: 268px;
  height: 268px;
  place-items: center;
  background: var(--white);
  border: 1px solid rgba(23, 26, 32, 0.08);
  border-radius: 50%;
  box-shadow: 0 26px 60px rgba(21, 51, 152, 0.16);
}

.gp-emblem img {
  width: 120px;
  height: auto;
}

.gp-emblem-caption {
  position: absolute;
  top: 14px;
  color: #8a8f99;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.22em;
}

.gp-emblem-label {
  position: absolute;
  bottom: 10px;
  padding: 6px 14px;
  color: var(--ink);
  background: var(--mint);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.gp-platforms {
  background: var(--white);
}

.gp-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.gp-card {
  display: flex;
  flex-direction: column;
  padding: 30px 28px 26px;
  background: var(--paper);
  border: 1px solid rgba(23, 26, 32, 0.1);
  border-radius: 16px;
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

.gp-card:hover {
  transform: translateY(-4px);
  border-color: rgba(23, 26, 32, 0.22);
  box-shadow: 0 18px 40px rgba(23, 26, 32, 0.1);
}

.gp-card.is-primary {
  color: var(--white);
  background: var(--ink);
  border-color: var(--ink);
}

.gp-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.gp-flag {
  padding: 4px 10px;
  color: var(--ink);
  background: var(--mint);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
}

.gp-card:not(.is-primary) .gp-flag {
  background: rgba(23, 26, 32, 0.08);
}

.gp-num {
  color: #8a8f99;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.gp-card.is-primary .gp-num {
  color: rgba(255, 255, 255, 0.5);
}

.gp-card h3 {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 900;
  line-height: 1.1;
}

.gp-role {
  margin: 8px 0 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
  opacity: 0.72;
}

.gp-desc {
  margin: 16px 0 0;
  color: var(--ink-soft);
  font-size: 12.5px;
  line-height: 1.85;
}

.gp-card.is-primary .gp-desc {
  color: rgba(255, 255, 255, 0.72);
}

.gp-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.gp-link {
  display: inline-flex;
  height: 38px;
  align-items: center;
  padding: 0 15px;
  border: 1px solid rgba(23, 26, 32, 0.18);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 800;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease;
}

.gp-link:hover,
.gp-link:focus-visible {
  color: var(--white);
  background: var(--ink);
  border-color: var(--ink);
}

.gp-link.is-dark {
  color: var(--white);
  background: var(--ink);
  border-color: var(--ink);
}

.gp-link.is-dark:hover,
.gp-link.is-dark:focus-visible {
  color: var(--ink);
  background: var(--mint);
  border-color: var(--mint);
}

.gp-card.is-primary .gp-link {
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.28);
}

.gp-card.is-primary .gp-link:hover,
.gp-card.is-primary .gp-link:focus-visible {
  color: var(--ink);
  background: var(--white);
  border-color: var(--white);
}

.gp-card.is-primary .gp-link.is-dark {
  color: var(--ink);
  background: var(--mint);
  border-color: var(--mint);
}

.gp-card.is-primary .gp-link.is-dark:hover,
.gp-card.is-primary .gp-link.is-dark:focus-visible {
  background: var(--white);
  border-color: var(--white);
}

.gp-meta {
  margin: auto 0 0;
  padding-top: 18px;
  color: #7d828c;
  font-size: 11px;
}

.gp-card.is-primary .gp-meta {
  color: rgba(255, 255, 255, 0.55);
}

.gp-meta strong {
  color: var(--ink);
  font-family: "SF Mono", ui-monospace, Consolas, monospace;
  font-size: 13px;
  letter-spacing: 0.08em;
}

.gp-card.is-primary .gp-meta strong {
  color: var(--mint);
}

.gp-company-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: start;
  gap: 64px;
}

.gp-company-copy h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 46px;
  font-weight: 900;
  line-height: 1.16;
}

.gp-company-copy > p {
  max-width: 32em;
  margin: 20px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.85;
}

.gp-company-copy .text-link {
  margin-top: 24px;
}

.gp-company-panel {
  display: grid;
  gap: 12px;
}

.gp-company-panel article {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 26px;
  background: var(--white);
  border: 1px solid rgba(23, 26, 32, 0.1);
  border-radius: 14px;
}

.gp-company-panel h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
}

.gp-company-panel p {
  margin: 5px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
}

@media (max-width: 980px) {
  .gp-hero {
    padding: 54px 0 50px;
  }

  .gp-hero-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

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

  .gp-hero-sub {
    font-size: 20px;
  }

  .gp-hero-visual {
    min-height: 0;
    order: -1;
  }

  .gp-emblem {
    width: 168px;
    height: 168px;
  }

  .gp-emblem img {
    width: 76px;
  }

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

  .gp-company-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .gp-company-copy h2 {
    font-size: 32px;
  }
}

@media (max-width: 640px) {
  .gp-hero h1 {
    font-size: 36px;
    letter-spacing: 1px;
  }

  .gp-hero-sub {
    font-size: 17px;
  }

  .gp-actions {
    flex-wrap: wrap;
    gap: 16px;
  }

  .gp-card {
    padding: 24px 20px 22px;
  }

  .gp-card h3 {
    font-size: 26px;
  }

  .gp-company-panel article {
    padding: 20px 18px;
    gap: 12px;
  }

  .gp-company-panel h3 {
    font-size: 15px;
  }
}


/* 移动端下拉导航：整宽排布（原 justify-content:center 会把列压成内容宽） */
@media (max-width: 980px) {
  .main-nav.is-open {
    justify-content: stretch;
  }

  .main-nav a {
    text-align: left;
  }
}

.brand-logo-172 {
  width: auto;
  height: 40px;
  filter: drop-shadow(0 4px 8px rgba(24, 62, 140, 0.18));
}

.brand-footer .brand-logo-172 {
  padding: 0;
  background: none;
  filter: none;
}

@media (max-width: 640px) {
  .brand-logo-172 {
    height: 34px;
  }
}