:root {
  color-scheme: dark;
  --bg: #05090f;
  --bg-soft: #07121d;
  --panel: rgba(10, 23, 36, 0.78);
  --panel-solid: #0a1724;
  --line: rgba(150, 190, 216, 0.17);
  --line-hot: rgba(84, 218, 255, 0.44);
  --text: #f5f9fb;
  --muted: #a8bac7;
  --muted-soft: #718696;
  --cyan: #4bdcff;
  --blue: #4d82ff;
  --mint: #4cf0d0;
  --shell: 1220px;
  --sans: var(--font-geist-sans), "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --mono: var(--font-geist-mono), ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  color: var(--text);
  background: var(--bg);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button {
  font: inherit;
}

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 12px;
  padding: 10px 16px;
  color: #031119;
  background: var(--cyan);
  border-radius: 7px;
  font-weight: 750;
  transform: translateY(-150%);
}

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

.site-atmosphere {
  position: fixed;
  z-index: 0;
  inset: 0;
  overflow: hidden;
  contain: strict;
  pointer-events: none;
}

.glow {
  position: absolute;
  width: 52vw;
  height: 52vw;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.12;
}

.glow-one {
  top: -25vw;
  right: 0;
  background: var(--blue);
}

.glow-two {
  bottom: -38vw;
  left: 0;
  background: var(--cyan);
}

.grid-field {
  position: absolute;
  inset: 0;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(117, 164, 194, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(117, 164, 194, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 90%);
}

.site-header {
  position: fixed;
  z-index: 50;
  inset: 0 0 auto;
  border-bottom: 1px solid rgba(145, 189, 218, 0.12);
  background: rgba(5, 9, 15, 0.78);
  backdrop-filter: blur(20px);
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  gap: 32px;
}

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

.brand-mark {
  position: relative;
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(75, 220, 255, 0.56);
  border-radius: 50%;
  box-shadow: 0 0 24px rgba(75, 220, 255, 0.15);
}

.brand-mark::before,
.brand-mark::after,
.brand-mark i {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.brand-mark::before {
  inset: 7px;
  border: 1px solid rgba(76, 240, 208, 0.62);
}

.brand-mark::after {
  width: 6px;
  height: 6px;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
}

.brand-mark i {
  top: 4px;
  right: 1px;
  width: 5px;
  height: 5px;
  background: var(--mint);
}

.brand-name {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.brand-name strong {
  font-size: 21px;
  font-weight: 680;
  letter-spacing: -0.035em;
}

.brand-name small {
  color: var(--cyan);
  font: 750 10px/1 var(--mono);
  letter-spacing: 0.12em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.2vw, 34px);
  margin: 0 auto;
}

.site-nav a {
  position: relative;
  padding-block: 29px;
  color: var(--muted);
  font-size: 16px;
  font-weight: 570;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 20px;
  left: 0;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transition: transform 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.language-switch {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted-soft);
  font: 690 13px/1 var(--mono);
}

.language-switch a {
  padding: 8px 2px;
  transition: color 0.2s ease;
}

.language-switch a:hover,
.language-switch a:focus-visible,
.language-switch a.is-active {
  color: var(--cyan);
}

.header-cta {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 19px;
  border: 1px solid rgba(75, 220, 255, 0.42);
  border-radius: 7px;
  color: var(--text);
  font-size: 15px;
  font-weight: 650;
  transition: background 0.2s ease, color 0.2s ease;
}

.header-cta:hover,
.header-cta:focus-visible {
  color: #031119;
  background: var(--cyan);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 12px 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 1px;
  margin: 5px 0;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.hero {
  position: relative;
  z-index: 1;
  min-height: 850px;
  display: flex;
  align-items: center;
  padding: 148px 0 96px;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  right: -10%;
  bottom: 4%;
  width: 52%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-hot), transparent);
  transform: rotate(-24deg);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(430px, 0.95fr);
  align-items: center;
  gap: clamp(60px, 8vw, 120px);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 24px;
  color: var(--cyan);
  font: 720 12px/1.5 var(--mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow span {
  width: 28px;
  height: 1px;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(56px, 6.2vw, 92px);
  font-weight: 610;
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.hero h1 > span {
  display: block;
  margin-top: 8px;
  color: transparent;
  background: linear-gradient(100deg, var(--cyan), #8cf5df 48%, #89a9ff);
  background-clip: text;
  -webkit-background-clip: text;
}

.hero-en h1 {
  font-size: clamp(49px, 5.3vw, 78px);
  line-height: 1.01;
}

.hero-zh h1 {
  font-size: clamp(39px, 5vw, 70px);
  line-height: 1.06;
  letter-spacing: -0.045em;
}

.hero-lead {
  max-width: 680px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: clamp(18px, 1.55vw, 21px);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.button {
  min-height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 680;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

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

.button-primary {
  color: #03121b;
  background: linear-gradient(120deg, var(--cyan), #78eacc);
  box-shadow: 0 13px 38px rgba(75, 220, 255, 0.16);
}

.button-primary:hover,
.button-primary:focus-visible {
  box-shadow: 0 16px 48px rgba(75, 220, 255, 0.24);
}

.button-secondary {
  border-color: var(--line);
  background: rgba(9, 19, 30, 0.42);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: var(--line-hot);
}

.hero-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin: 48px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.hero-principles li {
  min-width: 0;
  padding-right: 18px;
}

.hero-principles li + li {
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.hero-principles small,
.hero-principles strong,
.hero-principles span {
  display: block;
}

.hero-principles small {
  margin-bottom: 7px;
  color: var(--cyan);
  font: 700 10px/1 var(--mono);
}

.hero-principles strong {
  font-size: 15px;
  font-weight: 670;
}

.hero-principles span {
  margin-top: 3px;
  color: var(--muted-soft);
  font-size: 12px;
  line-height: 1.45;
}

.system-visual {
  position: relative;
}

.system-frame {
  position: relative;
  padding: 14px;
  border: 1px solid rgba(119, 181, 220, 0.22);
  border-radius: 16px;
  background:
    linear-gradient(160deg, rgba(13, 31, 48, 0.94), rgba(6, 15, 25, 0.9)),
    var(--panel-solid);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.45);
  transform: perspective(1000px) rotateY(-4deg) rotateX(1deg);
}

.system-frame::before {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: -1;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(75, 220, 255, 0.28), transparent 28%, transparent 70%, rgba(77, 130, 255, 0.22));
}

.frame-topline {
  min-height: 34px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 13px;
  padding: 0 7px 12px;
  color: var(--muted-soft);
  font: 700 9px/1 var(--mono);
  letter-spacing: 0.11em;
}

.frame-topline i {
  height: 1px;
  background: var(--line);
}

.frame-topline b {
  color: var(--mint);
  font: inherit;
}

.mission-card {
  min-height: 68px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 0 17px;
  border: 1px solid rgba(75, 220, 255, 0.2);
  border-radius: 9px;
  background: rgba(75, 220, 255, 0.055);
}

.mission-card small {
  color: var(--cyan);
  font: 700 9px/1 var(--mono);
  letter-spacing: 0.1em;
}

.mission-card strong {
  overflow: hidden;
  font-size: 13px;
  font-weight: 580;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mission-card > span {
  color: var(--cyan);
}

.system-flow-labels {
  display: flex;
  justify-content: space-between;
  padding: 16px 5px 8px;
  color: var(--muted-soft);
  font: 700 8px/1 var(--mono);
  letter-spacing: 0.12em;
}

.system-layers {
  display: grid;
  gap: 7px;
}

.system-layer {
  min-height: 72px;
  display: grid;
  grid-template-columns: 38px 1fr 22px;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(7, 17, 28, 0.7);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.system-layer:hover {
  border-color: var(--line-hot);
  transform: translateX(-4px);
}

.system-layer > span {
  color: var(--cyan);
  font: 700 11px/1 var(--mono);
}

.system-layer div {
  display: grid;
  gap: 4px;
}

.system-layer strong {
  font-size: 15px;
  font-weight: 640;
}

.system-layer small {
  color: var(--muted-soft);
  font: 550 10px/1.2 var(--mono);
}

.system-layer i {
  position: relative;
  width: 19px;
  height: 19px;
  border: 1px solid rgba(76, 240, 208, 0.34);
  border-radius: 50%;
}

.system-layer i::after {
  content: "";
  position: absolute;
  inset: 5px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 9px var(--mint);
}

.system-bus {
  position: relative;
  min-height: 47px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: center;
  margin-top: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  font: 650 9px/1 var(--mono);
  text-align: center;
}

.system-bus span + span {
  border-left: 1px solid var(--line);
}

.system-bus i {
  position: absolute;
  bottom: 0;
  left: -30%;
  width: 28%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  animation: bus-signal 4.5s linear infinite;
}

.floating-note {
  position: absolute;
  display: grid;
  gap: 3px;
  min-width: 154px;
  padding: 13px 15px;
  border: 1px solid rgba(75, 220, 255, 0.24);
  border-radius: 9px;
  background: rgba(5, 13, 22, 0.86);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(14px);
}

.floating-note small {
  color: var(--cyan);
  font: 700 9px/1 var(--mono);
}

.floating-note strong {
  font: 700 11px/1.2 var(--mono);
  letter-spacing: 0.08em;
}

.note-one {
  top: 22%;
  left: -58px;
}

.note-two {
  right: -48px;
  bottom: 13%;
}

.signal-strip {
  position: relative;
  z-index: 2;
  border-block: 1px solid var(--line);
  background: rgba(7, 17, 29, 0.68);
}

.signal-inner {
  min-height: 82px;
  display: grid;
  grid-template-columns: 1fr auto 1.15fr auto 1fr;
  align-items: center;
  gap: 22px;
  color: var(--muted-soft);
  font: 700 12px/1 var(--mono);
  letter-spacing: 0.12em;
  text-align: center;
}

.signal-inner strong {
  color: var(--cyan);
  font-size: 14px;
}

.signal-inner i {
  color: var(--line-hot);
  font-style: normal;
}

@keyframes bus-signal {
  to { left: 105%; }
}

.section {
  position: relative;
  z-index: 2;
  padding: 130px 0;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
  align-items: end;
  gap: clamp(48px, 8vw, 110px);
  margin-bottom: 54px;
}

.section-heading .eyebrow,
.architecture-copy .eyebrow,
.company-copy .eyebrow,
.contact-panel .eyebrow {
  margin-bottom: 18px;
}

.section-heading h2,
.architecture-copy h2,
.company-copy h2,
.contact-panel h2 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(42px, 4.5vw, 66px);
  font-weight: 600;
  line-height: 1.06;
  letter-spacing: -0.05em;
}

.section-heading > p,
.section-lead,
.company-copy > p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(17px, 1.45vw, 20px);
  line-height: 1.82;
}

.boundary-note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  margin: -15px 0 34px;
  padding: 14px 17px;
  border: 1px solid rgba(75, 220, 255, 0.16);
  border-radius: 8px;
  color: #90a8b9;
  background: rgba(75, 220, 255, 0.035);
  font-size: 14px;
  line-height: 1.7;
}

.boundary-note span {
  color: var(--cyan);
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 13px;
}

.module-card {
  position: relative;
  min-height: 340px;
  display: flex;
  flex-direction: column;
  padding: 30px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: linear-gradient(155deg, rgba(11, 27, 43, 0.82), rgba(7, 17, 28, 0.68));
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.module-card::after {
  content: "";
  position: absolute;
  right: -45px;
  bottom: -45px;
  width: 120px;
  height: 120px;
  border: 1px solid rgba(75, 220, 255, 0.09);
  border-radius: 50%;
  box-shadow: 0 0 0 22px rgba(75, 220, 255, 0.025);
}

.module-card:hover {
  z-index: 1;
  border-color: var(--line-hot);
  background: linear-gradient(155deg, rgba(13, 34, 53, 0.92), rgba(7, 18, 30, 0.82));
  transform: translateY(-5px);
}

.module-featured {
  grid-column: span 2;
  padding-right: 33%;
  background:
    radial-gradient(circle at 86% 50%, rgba(75, 220, 255, 0.11), transparent 25%),
    linear-gradient(145deg, rgba(12, 32, 50, 0.92), rgba(7, 17, 28, 0.7));
}

.module-featured::before {
  content: "";
  position: absolute;
  top: 50%;
  right: 10%;
  width: 118px;
  height: 118px;
  border: 1px solid rgba(75, 220, 255, 0.3);
  border-radius: 50%;
  box-shadow:
    0 0 0 24px rgba(75, 220, 255, 0.04),
    0 0 0 48px rgba(75, 220, 255, 0.018);
  transform: translateY(-50%);
}

.module-card:last-child {
  grid-column: span 3;
  min-height: 270px;
  padding-right: 52%;
  background:
    linear-gradient(90deg, rgba(10, 28, 45, 0.94), rgba(8, 21, 35, 0.72)),
    var(--panel-solid);
}

.module-card:last-child::before {
  content: "SDK / API";
  position: absolute;
  top: 50%;
  right: 13%;
  color: rgba(75, 220, 255, 0.12);
  font: 700 clamp(34px, 5vw, 70px)/1 var(--mono);
  letter-spacing: -0.08em;
  transform: translateY(-50%);
}

.module-card-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 50px;
}

.module-card-top span {
  color: var(--cyan);
  font: 700 11px/1 var(--mono);
}

.module-card-top i {
  width: 32px;
  height: 1px;
  background: var(--line-hot);
}

.module-card > small {
  color: var(--cyan);
  font: 700 10px/1.4 var(--mono);
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.module-card h3 {
  margin: 10px 0 12px;
  font-size: 25px;
  font-weight: 620;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.module-card > p {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.75;
}

.module-card ul {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: auto 0 0;
  padding: 24px 0 0;
  list-style: none;
}

.module-card li {
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--muted-soft);
  font: 650 9px/1 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.architecture-section {
  overflow: hidden;
  border-block: 1px solid var(--line);
  background:
    radial-gradient(circle at 75% 42%, rgba(77, 130, 255, 0.12), transparent 32%),
    rgba(7, 15, 25, 0.72);
}

.architecture-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(480px, 1.16fr);
  align-items: center;
  gap: clamp(70px, 9vw, 130px);
}

.architecture-copy .section-lead {
  margin-top: 28px;
}

.quality-grid {
  display: grid;
  gap: 2px;
  margin-top: 40px;
}

.quality-grid > div {
  display: grid;
  grid-template-columns: 15px 105px 1fr;
  align-items: center;
  gap: 12px;
  min-height: 53px;
  border-top: 1px solid var(--line);
}

.quality-grid > div:last-child {
  border-bottom: 1px solid var(--line);
}

.quality-grid i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 12px rgba(76, 240, 208, 0.65);
}

.quality-grid strong {
  font-size: 15px;
  font-weight: 650;
}

.quality-grid span {
  color: var(--muted-soft);
  font-size: 13px;
}

.task-session {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  padding-left: 175px;
}

.session-rail {
  position: absolute;
  top: 6%;
  bottom: 6%;
  left: 116px;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--cyan) 18%, var(--blue) 82%, transparent);
  box-shadow: 0 0 18px rgba(75, 220, 255, 0.26);
}

.session-center {
  position: absolute;
  z-index: 3;
  top: 50%;
  left: 0;
  width: 205px;
  height: 205px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(75, 220, 255, 0.35);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(75, 220, 255, 0.13), transparent 67%),
    rgba(6, 16, 27, 0.95);
  box-shadow: 0 0 0 24px rgba(75, 220, 255, 0.025), 0 0 70px rgba(75, 220, 255, 0.1);
  transform: translateY(-50%);
}

.session-center::after {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px dashed rgba(75, 220, 255, 0.2);
  border-radius: 50%;
  animation: session-spin 18s linear infinite;
}

.session-center small {
  color: var(--cyan);
  font: 700 9px/1 var(--mono);
  letter-spacing: 0.14em;
}

.session-center strong {
  max-width: 140px;
  margin: 10px 0 7px;
  font-size: 21px;
  font-weight: 640;
  line-height: 1.12;
  text-align: center;
  text-transform: uppercase;
}

.session-center span {
  color: var(--muted-soft);
  font: 650 8px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.task-session ol {
  width: 100%;
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.task-session li {
  min-height: 93px;
  display: grid;
  grid-template-columns: 34px 1fr 22px;
  align-items: center;
  gap: 14px;
  padding: 0 20px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(8, 20, 33, 0.78);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
}

.task-session li:nth-child(2),
.task-session li:nth-child(4) {
  transform: translateX(24px);
}

.task-session li > b {
  color: var(--cyan);
  font: 700 11px/1 var(--mono);
}

.task-session li > div {
  display: grid;
  gap: 4px;
}

.task-session li strong {
  font-size: 16px;
  font-weight: 640;
}

.task-session li span {
  color: var(--muted-soft);
  font-size: 12px;
}

.task-session li > i {
  width: 9px;
  height: 9px;
  border: 1px solid var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(76, 240, 208, 0.35);
}

.robot-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: rgba(8, 19, 31, 0.62);
}

.robot-card {
  position: relative;
  min-height: 250px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 26px 15px;
  overflow: hidden;
  text-align: center;
  transition: background 0.25s ease;
}

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

.robot-card:hover {
  background: rgba(75, 220, 255, 0.055);
}

.robot-card > span {
  position: absolute;
  top: 14px;
  left: 16px;
  color: rgba(75, 220, 255, 0.3);
  font: 700 38px/1 var(--mono);
}

.robot-glyph {
  position: relative;
  width: 88px;
  height: 70px;
  margin-bottom: 28px;
  border: 1px solid rgba(75, 220, 255, 0.28);
  border-radius: 12px 22px 12px 22px;
  transform: skewX(-6deg);
}

.robot-glyph::before,
.robot-glyph::after {
  content: "";
  position: absolute;
  bottom: -9px;
  width: 17px;
  height: 17px;
  border: 1px solid rgba(76, 240, 208, 0.52);
  border-radius: 50%;
  background: var(--panel-solid);
}

.robot-glyph::before { left: 11px; }
.robot-glyph::after { right: 11px; }

.robot-glyph i {
  position: absolute;
  top: 18px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 11px var(--cyan);
}

.robot-glyph i:nth-child(1) { left: 15px; }
.robot-glyph i:nth-child(2) { left: 39px; }
.robot-glyph i:nth-child(3) { right: 15px; }

.robot-card strong {
  font-size: 16px;
  font-weight: 650;
}

.robot-card small {
  margin-top: 5px;
  color: var(--muted-soft);
  font-size: 12px;
}

.deployment-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 13px;
}

.deployment-flow > div {
  position: relative;
  min-height: 94px;
  display: grid;
  align-content: center;
  gap: 4px;
  padding: 0 28px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(8, 19, 31, 0.62);
}

.deployment-flow small {
  color: var(--cyan);
  font: 700 9px/1 var(--mono);
}

.deployment-flow strong {
  font-size: 15px;
  font-weight: 620;
}

.deployment-flow i {
  position: absolute;
  z-index: 3;
  top: 50%;
  right: -19px;
  width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-hot);
  border-radius: 50%;
  color: var(--cyan);
  background: var(--bg);
  font-style: normal;
  transform: translateY(-50%);
}

.deployment-flow .flow-core {
  border-color: rgba(75, 220, 255, 0.34);
  background: linear-gradient(135deg, rgba(75, 220, 255, 0.08), rgba(77, 130, 255, 0.06));
}

.solutions-section {
  border-top: 1px solid var(--line);
  background: rgba(6, 14, 23, 0.52);
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 13px;
}

.solution-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(9, 21, 34, 0.76);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.solution-card:hover {
  border-color: var(--line-hot);
  transform: translateY(-5px);
}

.solution-art {
  position: relative;
  height: 205px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(rgba(75, 220, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(75, 220, 255, 0.055) 1px, transparent 1px),
    radial-gradient(circle at 50% 35%, rgba(75, 220, 255, 0.14), transparent 48%),
    #07121d;
  background-size: 30px 30px, 30px 30px, auto, auto;
}

.solution-art::after {
  content: "";
  position: absolute;
  right: 12%;
  bottom: 17%;
  left: 12%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  box-shadow: 0 -37px 0 rgba(75, 220, 255, 0.1), 0 -74px 0 rgba(75, 220, 255, 0.06);
}

.solution-art span {
  position: absolute;
  bottom: 17%;
  width: 34px;
  border: 1px solid rgba(75, 220, 255, 0.42);
  border-bottom: 0;
  background: rgba(75, 220, 255, 0.05);
}

.solution-art span:nth-child(1) { left: 21%; height: 54px; }
.solution-art span:nth-child(2) { left: 43%; height: 96px; }
.solution-art span:nth-child(3) { right: 20%; height: 74px; }

.solution-art i {
  position: absolute;
  top: 24%;
  right: 24%;
  width: 12px;
  height: 12px;
  border: 1px solid var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 18px var(--mint);
}

.solution-art-2 {
  background-position: 8px 8px, 8px 8px, 50% 50%, 0 0;
}

.solution-art-2 span {
  width: 46px;
  transform: skewX(-9deg);
}

.solution-art-3 span {
  width: 58px;
  border-radius: 50% 50% 0 0;
}

.solution-body {
  padding: 29px 28px 31px;
}

.solution-body > small {
  color: var(--cyan);
  font: 700 9px/1.4 var(--mono);
  letter-spacing: 0.08em;
}

.solution-body h3 {
  margin: 11px 0 13px;
  font-size: 25px;
  font-weight: 620;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.solution-body p {
  min-height: 142px;
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

.solution-body ul {
  display: grid;
  gap: 8px;
  margin: 22px 0 0;
  padding: 19px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.solution-body li {
  position: relative;
  padding-left: 15px;
  color: #c7d5df;
  font-size: 13px;
}

.solution-body li::before {
  content: "";
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
}

.company-section {
  padding-top: 118px;
}

.company-panel {
  min-height: 520px;
  display: grid;
  grid-template-columns: 0.76fr 1.24fr;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    radial-gradient(circle at 18% 50%, rgba(75, 220, 255, 0.1), transparent 27%),
    linear-gradient(135deg, rgba(10, 25, 41, 0.9), rgba(6, 15, 25, 0.84));
}

.company-orbit {
  position: relative;
  min-height: 520px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-right: 1px solid var(--line);
}

.company-orbit::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.3;
  background-image:
    linear-gradient(rgba(75, 220, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(75, 220, 255, 0.06) 1px, transparent 1px);
  background-size: 42px 42px;
}

.orbit {
  position: absolute;
  border: 1px solid rgba(75, 220, 255, 0.22);
  border-radius: 50%;
}

.orbit::after {
  content: "";
  position: absolute;
  top: 50%;
  left: -4px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
}

.orbit-one { width: 285px; height: 285px; animation: session-spin 22s linear infinite; }
.orbit-two { width: 205px; height: 205px; animation: session-spin 15s linear reverse infinite; }
.orbit-three { width: 125px; height: 125px; border-color: rgba(76, 240, 208, 0.3); }

.company-orbit > strong {
  position: relative;
  z-index: 2;
  width: 76px;
  height: 76px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-hot);
  border-radius: 50%;
  color: var(--cyan);
  background: #07121d;
  font: 700 20px/1 var(--mono);
  box-shadow: 0 0 45px rgba(75, 220, 255, 0.18);
}

.company-orbit > i {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 10px var(--mint);
}

.company-orbit > i:nth-of-type(1) { top: 24%; left: 27%; }
.company-orbit > i:nth-of-type(2) { top: 36%; right: 22%; }
.company-orbit > i:nth-of-type(3) { right: 31%; bottom: 20%; }

.company-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(48px, 7vw, 88px);
}

.company-copy > p {
  max-width: 700px;
  margin-top: 25px;
}

.value-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 30px;
}

.value-list span {
  padding: 8px 11px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: #c5d4de;
  font-size: 13px;
}

.contact-section {
  position: relative;
  z-index: 2;
  padding: 0 0 92px;
}

.contact-panel {
  position: relative;
  min-height: 330px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  padding: clamp(48px, 7vw, 82px);
  overflow: hidden;
  border: 1px solid rgba(75, 220, 255, 0.28);
  border-radius: 16px;
  background:
    linear-gradient(110deg, rgba(75, 220, 255, 0.13), rgba(77, 130, 255, 0.08)),
    #081929;
}

.contact-panel::after {
  content: "";
  width: 310px;
  height: 310px;
  position: absolute;
  right: -70px;
  bottom: -180px;
  border: 1px solid rgba(75, 220, 255, 0.24);
  border-radius: 50%;
  box-shadow: 0 0 0 38px rgba(75, 220, 255, 0.03), 0 0 0 76px rgba(75, 220, 255, 0.018);
}

.contact-panel > div {
  position: relative;
  z-index: 2;
  max-width: 780px;
}

.contact-panel h2 {
  font-size: clamp(38px, 4vw, 58px);
}

.contact-panel > div > p:last-child {
  margin: 20px 0 0;
  color: #bdd0dc;
  font-size: 17px;
}

.contact-button {
  position: relative;
  z-index: 2;
  flex: 0 0 auto;
  color: #031119;
  background: var(--text);
}

.contact-button:hover,
.contact-button:focus-visible {
  box-shadow: 0 15px 40px rgba(255, 255, 255, 0.14);
}

.site-footer {
  position: relative;
  z-index: 2;
  border-top: 1px solid var(--line);
  background: #040910;
}

.footer-main {
  min-height: 118px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 30px;
}

.footer-main p {
  margin: 0;
  color: var(--muted-soft);
  font-size: 14px;
  text-align: center;
}

.footer-main > a:last-child {
  color: #c7d6e0;
  font: 600 13px/1 var(--mono);
}

.footer-main > a:last-child:hover,
.footer-main > a:last-child:focus-visible {
  color: var(--cyan);
}

.footer-bottom {
  min-height: 65px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  border-top: 1px solid var(--line);
  color: #607485;
  font-size: 12px;
}

.footer-bottom > span:last-child {
  text-align: right;
}

.footer-languages {
  display: flex;
  gap: 8px;
  color: var(--muted-soft);
}

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

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

@media (max-width: 1080px) {
  .header-cta { display: none; }
  .hero-grid { grid-template-columns: 1fr 0.88fr; gap: 56px; }
  .hero h1 { font-size: clamp(52px, 6vw, 76px); }
  .note-one { left: -32px; }
  .note-two { right: -24px; }
  .module-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .module-card:last-child { grid-column: span 2; }
  .architecture-grid { grid-template-columns: minmax(0, 0.9fr) minmax(440px, 1.1fr); gap: 54px; }
  .task-session { padding-left: 140px; }
  .session-center { width: 175px; height: 175px; }
  .session-rail { left: 94px; }
  .robot-grid { grid-template-columns: repeat(3, 1fr); }
  .robot-card:nth-child(4), .robot-card:nth-child(5) { border-top: 1px solid var(--line); }
  .robot-card:nth-child(4) { border-left: 0; }
}

@media (max-width: 900px) {
  .header-inner { min-height: 74px; }
  .menu-toggle { display: block; margin-left: auto; }
  .site-nav {
    position: fixed;
    inset: 74px 0 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    margin: 0;
    padding: 28px 24px 120px;
    visibility: hidden;
    opacity: 0;
    background: rgba(4, 10, 17, 0.98);
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }
  .site-nav.is-open { visibility: visible; opacity: 1; transform: none; }
  .site-nav a { padding: 18px 4px; border-bottom: 1px solid var(--line); font-size: 18px; }
  .site-nav a::after { display: none; }
  .header-actions { margin-left: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
  .hero { min-height: 0; padding-top: 142px; }
  .hero-grid { grid-template-columns: 1fr; gap: 80px; }
  .hero-copy { max-width: 760px; }
  .system-visual { width: min(100%, 620px); margin: 0 auto; }
  .section { padding: 100px 0; }
  .section-heading { grid-template-columns: 1fr; align-items: start; gap: 24px; margin-bottom: 44px; }
  .section-heading > p { max-width: 760px; }
  .architecture-grid { grid-template-columns: 1fr; }
  .architecture-copy { max-width: 760px; }
  .task-session { width: min(100%, 680px); margin-inline: auto; }
  .robot-grid { grid-template-columns: repeat(2, 1fr); }
  .robot-card:nth-child(3) { border-top: 1px solid var(--line); border-left: 0; }
  .robot-card:nth-child(4) { border-left: 1px solid var(--line); }
  .robot-card:nth-child(5) { grid-column: 1 / -1; border-left: 0; }
  .solution-grid { grid-template-columns: 1fr; }
  .solution-card { display: grid; grid-template-columns: 0.78fr 1.22fr; }
  .solution-art { height: 100%; min-height: 340px; border-right: 1px solid var(--line); border-bottom: 0; }
  .solution-body p { min-height: 0; }
  .company-panel { grid-template-columns: 0.68fr 1.32fr; }
  .company-orbit, .company-panel { min-height: 470px; }
  .orbit-one { width: 225px; height: 225px; }
  .orbit-two { width: 160px; height: 160px; }
  .contact-panel { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 640px) {
  .shell { width: min(calc(100% - 28px), var(--shell)); }
  body { font-size: 16px; }
  .header-inner { min-height: 70px; gap: 12px; }
  .site-nav { inset-block-start: 70px; }
  .brand-mark { width: 34px; height: 34px; }
  .brand-name strong { font-size: 19px; }
  .language-switch { min-height: 38px; padding-inline: 9px; font-size: 11px; }
  .menu-toggle { width: 40px; height: 40px; }
  .hero { padding: 122px 0 76px; }
  .eyebrow { font-size: 10px; letter-spacing: 0.13em; }
  .hero h1 { font-size: clamp(43px, 13.2vw, 62px); line-height: 1.04; }
  .hero-zh h1 { font-size: clamp(38px, 11.1vw, 50px); line-height: 1.08; }
  .hero-lead { margin-top: 24px; font-size: 18px; line-height: 1.78; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .hero-principles { grid-template-columns: 1fr; gap: 15px; padding-top: 20px; }
  .hero-principles li { padding: 0; display: grid; grid-template-columns: 28px 80px 1fr; align-items: center; gap: 8px; }
  .hero-principles li + li { padding: 14px 0 0; border-top: 1px solid var(--line); border-left: 0; }
  .hero-principles small { margin: 0; }
  .hero-principles span { margin: 0; font-size: 12px; }
  .system-visual { width: calc(100% + 4px); }
  .system-frame { padding: 10px; transform: none; }
  .mission-card { grid-template-columns: 1fr auto; }
  .mission-card small { display: none; }
  .system-layer { min-height: 68px; grid-template-columns: 30px 1fr 19px; padding-inline: 12px; }
  .system-layer strong { font-size: 14px; }
  .system-layer small { font-size: 9px; }
  .floating-note { display: none; }
  .signal-inner { min-height: 118px; grid-template-columns: 1fr; gap: 6px; padding-block: 18px; font-size: 10px; }
  .signal-inner i { transform: rotate(90deg); }
  .section { padding: 82px 0; }
  .section-heading h2,
  .architecture-copy h2,
  .company-copy h2 { font-size: 36px; }
  .section-heading > p,
  .section-lead,
  .company-copy > p { font-size: 17px; }
  .boundary-note { margin-top: -8px; font-size: 13px; }
  .module-grid { grid-template-columns: 1fr; }
  .module-featured { grid-column: auto; padding-right: 28px; }
  .module-card:last-child { grid-column: auto; min-height: 305px; padding-right: 27px; }
  .module-card:last-child::before { display: none; }
  .module-featured::before { display: none; }
  .module-card { min-height: 305px; padding: 27px; }
  .module-card-top { margin-bottom: 44px; }
  .module-card h3 { font-size: 23px; }
  .task-session { min-height: 600px; padding-left: 88px; }
  .session-center { left: -12px; width: 125px; height: 125px; }
  .session-center strong { max-width: 94px; font-size: 15px; }
  .session-center small, .session-center span { font-size: 7px; }
  .session-rail { left: 50px; }
  .task-session ol { gap: 9px; }
  .task-session li { min-height: 98px; grid-template-columns: 26px 1fr 12px; gap: 8px; padding: 0 11px; }
  .task-session li:nth-child(2), .task-session li:nth-child(4) { transform: none; }
  .task-session li strong { font-size: 14px; }
  .task-session li span { font-size: 11px; line-height: 1.35; }
  .quality-grid > div { grid-template-columns: 15px 80px 1fr; }
  .quality-grid span { font-size: 12px; }
  .robot-card { min-height: 205px; }
  .robot-card:nth-child(odd) { border-left: 0; }
  .robot-card:nth-child(even) { border-left: 1px solid var(--line); }
  .robot-card:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .robot-card:nth-child(5) { grid-column: 1 / -1; }
  .robot-glyph { width: 74px; height: 60px; margin-bottom: 22px; }
  .deployment-flow { grid-template-columns: 1fr; }
  .deployment-flow > div { min-height: 82px; }
  .deployment-flow i { top: auto; right: 50%; bottom: -19px; transform: translateX(50%) rotate(90deg); }
  .solution-card { display: block; }
  .solution-art { height: 190px; min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .solution-body { padding: 27px 24px 29px; }
  .solution-body h3 { font-size: 23px; }
  .solution-body p { font-size: 16px; }
  .company-section { padding-top: 74px; }
  .company-panel { grid-template-columns: 1fr; }
  .company-orbit { min-height: 300px; border-right: 0; border-bottom: 1px solid var(--line); }
  .company-copy { padding: 44px 25px; }
  .company-copy > p { margin-top: 20px; }
  .contact-section { padding-bottom: 60px; }
  .contact-panel { min-height: 390px; padding: 44px 25px; }
  .contact-panel h2 { font-size: 35px; }
  .contact-button { width: 100%; }
  .footer-main { grid-template-columns: 1fr; justify-items: start; gap: 15px; padding: 34px 0; }
  .footer-main p { text-align: left; }
  .footer-bottom { grid-template-columns: 1fr; gap: 7px; padding: 20px 0; }
  .footer-bottom > span:last-child { text-align: left; }
}

@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;
  }
}