:root {
  --ink: #172021;
  --ink-soft: #536062;
  --paper: #ffffff;
  --paper-soft: #f4f7f5;
  --line: #dce4e1;
  --brand-blue: #067b9b;
  --brand-blue-dark: #075e75;
  --brand-green: #48a92f;
  --accent-amber: #d08a20;
  --charcoal: #152224;
  --charcoal-2: #213033;
  --shadow: 0 14px 40px rgba(13, 37, 40, 0.12);
  --container: 1200px;
  --header-height: 76px;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--paper);
  font-family:
    "HarmonyOS Sans SC", "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
}

body.dialog-open {
  overflow: hidden;
}

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

button,
input,
select,
textarea {
  font: inherit;
  letter-spacing: 0;
}

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

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

button {
  color: inherit;
}

:focus-visible {
  outline: 3px solid rgba(6, 123, 155, 0.38);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 2000;
  padding: 10px 14px;
  color: #fff;
  background: var(--charcoal);
  border-radius: 4px;
  transform: translateY(-150%);
}

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

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

.section {
  padding: 112px 0;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--brand-blue);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.2;
  text-transform: uppercase;
}

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

h1,
h2,
h3 {
  line-height: 1.18;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 42px;
  font-weight: 750;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 56px;
  align-items: end;
  margin-bottom: 52px;
}

.section-heading > p {
  max-width: 520px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 17px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition:
    transform 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease;
}

.button svg,
.icon-button svg,
.text-link svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

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

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

.button-primary:hover {
  background: var(--brand-blue-dark);
}

.button-secondary {
  color: var(--ink);
  background: #fff;
  border-color: #bdc9c5;
}

.button-secondary:hover {
  color: var(--brand-blue-dark);
  border-color: var(--brand-blue);
}

.button-light {
  color: var(--charcoal);
  background: #fff;
}

.button-light:hover {
  background: #eff5f2;
}

.button-ghost-light {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.62);
}

.button-ghost-light:hover {
  background: rgba(255, 255, 255, 0.17);
  border-color: #fff;
}

.icon-button {
  display: inline-grid;
  width: 44px;
  height: 44px;
  padding: 0;
  place-items: center;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
}

.icon-button:hover {
  color: var(--brand-blue);
  border-color: var(--brand-blue);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(220, 228, 225, 0.8);
  backdrop-filter: blur(14px);
}

.nav-shell {
  display: grid;
  width: min(calc(100% - 48px), 1320px);
  height: 100%;
  grid-template-columns: 270px 1fr auto;
  align-items: center;
  gap: 28px;
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  width: 236px;
  align-items: center;
}

.brand img {
  width: 100%;
  height: auto;
}

.desktop-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
}

.desktop-nav a {
  position: relative;
  padding: 26px 0 22px;
  color: #3b484a;
  font-size: 15px;
  font-weight: 650;
}

.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: 14px;
  left: 0;
  height: 2px;
  background: var(--brand-green);
  content: "";
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.desktop-nav a:hover,
.desktop-nav a.is-active {
  color: var(--ink);
}

.desktop-nav a:hover::after,
.desktop-nav a.is-active::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.mobile-menu-button {
  display: none;
}

.mobile-nav {
  position: absolute;
  top: 100%;
  right: 0;
  left: 0;
  padding: 14px 24px 20px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.mobile-nav a {
  display: block;
  min-height: 48px;
  padding: 11px 4px;
  border-bottom: 1px solid #edf1ef;
  font-weight: 650;
}

.mobile-nav a:last-child {
  color: var(--brand-blue);
  border-bottom: 0;
}

.hero {
  position: relative;
  display: flex;
  min-height: calc(100svh - 112px);
  align-items: stretch;
  overflow: hidden;
  color: #fff;
  background-image: url("assets/hero-control-center.webp");
  background-position: center;
  background-size: cover;
}

.hero::before {
  position: absolute;
  inset: 0;
  background: rgba(6, 20, 22, 0.42);
  content: "";
}

.hero-scrim {
  position: absolute;
  inset: 0 auto 0 0;
  width: 58%;
  background: rgba(5, 25, 28, 0.62);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 82px 0 48px;
}

.hero-copy {
  width: min(670px, 64%);
}

.hero-eyebrow {
  color: #9eead8;
}

.hero h1 {
  margin: 0 0 8px;
  font-size: 72px;
  font-weight: 800;
}

.hero-lead {
  margin-bottom: 18px;
  font-size: 31px;
  font-weight: 650;
}

.hero-description {
  max-width: 620px;
  margin-bottom: 34px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 18px;
}

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

.hero-metrics {
  display: flex;
  width: min(720px, 72%);
  gap: 0;
  margin: 68px 0 0;
}

.hero-metrics > div {
  min-width: 0;
  padding: 0 30px;
  border-left: 1px solid rgba(255, 255, 255, 0.32);
}

.hero-metrics > div:first-child {
  padding-left: 0;
  border-left: 0;
}

.hero-metrics dt {
  margin-bottom: 3px;
  font-size: 25px;
  font-weight: 800;
}

.hero-metrics dd {
  margin: 0;
  color: rgba(255, 255, 255, 0.73);
  font-size: 14px;
}

.industry-strip {
  min-height: 82px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.industry-list {
  display: grid;
  min-height: 82px;
  grid-template-columns: repeat(5, 1fr);
  align-items: center;
  scrollbar-width: none;
}

.industry-list::-webkit-scrollbar {
  display: none;
}

.industry-list span {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #536062;
  border-right: 1px solid var(--line);
  font-size: 14px;
  font-weight: 650;
}

.industry-list span:first-child {
  border-left: 1px solid var(--line);
}

.industry-list svg {
  width: 19px;
  height: 19px;
  color: var(--brand-green);
}

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

.solution-workbench {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  min-height: 590px;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 18px 50px rgba(24, 56, 59, 0.09);
}

.solution-tabs {
  display: flex;
  flex-direction: column;
  padding: 18px;
  background: #fff;
  border-right: 1px solid var(--line);
}

.solution-tab {
  display: flex;
  min-height: 62px;
  align-items: center;
  gap: 13px;
  padding: 0 16px;
  color: #526062;
  background: transparent;
  border: 0;
  border-bottom: 1px solid #e9efec;
  cursor: pointer;
  text-align: left;
}

.solution-tab svg {
  width: 22px;
  height: 22px;
}

.solution-tab:hover {
  color: var(--brand-blue);
}

.solution-tab.is-active {
  color: #fff;
  background: var(--charcoal);
  border-bottom-color: var(--charcoal);
  border-radius: 5px;
}

.solution-stage {
  position: relative;
  display: flex;
  min-width: 0;
  align-items: flex-end;
  overflow: hidden;
  color: #fff;
  background-image: url("assets/hero-control-center.webp");
  background-position: center;
  background-size: cover;
}

.solution-stage-overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 27, 30, 0.46);
}

.solution-stage-content {
  position: relative;
  z-index: 1;
  width: min(610px, 72%);
  padding: 56px;
  background: rgba(10, 31, 34, 0.78);
}

.solution-index {
  margin-bottom: 12px;
  color: #9eead8;
  font-size: 13px;
  font-weight: 800;
}

.solution-stage h3 {
  margin-bottom: 16px;
  font-size: 36px;
}

.solution-stage-content > p:not(.solution-index) {
  margin-bottom: 22px;
  color: rgba(255, 255, 255, 0.82);
}

.solution-stage ul {
  display: grid;
  gap: 7px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}

.solution-stage li {
  position: relative;
  padding-left: 18px;
}

.solution-stage li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--brand-green);
  border-radius: 50%;
  content: "";
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-weight: 750;
}

.text-link:hover {
  color: #9eead8;
}

.system-band {
  padding: 78px 0;
  color: #fff;
  background: var(--charcoal);
}

.system-layout {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 68px;
  align-items: center;
}

.system-intro .eyebrow {
  color: #8ddfc8;
}

.system-intro h2 {
  margin-bottom: 18px;
  font-size: 34px;
}

.system-intro p:last-child {
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.66);
}

.system-flow {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.system-flow::before {
  position: absolute;
  top: 27px;
  right: 10%;
  left: 10%;
  height: 1px;
  background: rgba(255, 255, 255, 0.28);
  content: "";
}

.system-flow li {
  position: relative;
  z-index: 1;
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.flow-icon {
  display: grid;
  width: 56px;
  height: 56px;
  margin-bottom: 16px;
  place-items: center;
  color: var(--charcoal);
  background: #fff;
  border: 5px solid var(--charcoal);
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.32);
}

.flow-icon svg {
  width: 21px;
  height: 21px;
}

.system-flow strong {
  margin-bottom: 4px;
  font-size: 15px;
}

.system-flow small {
  color: rgba(255, 255, 255, 0.58);
  font-size: 12px;
}

.products-section {
  background: #fff;
}

.product-toolbar {
  display: grid;
  grid-template-columns: auto minmax(180px, 220px) minmax(260px, 1fr);
  gap: 14px;
  align-items: center;
  margin-bottom: 22px;
}

.segmented-control {
  display: inline-grid;
  height: 48px;
  grid-template-columns: repeat(3, 74px);
  align-items: center;
  padding: 4px;
  background: #edf2ef;
  border-radius: 6px;
}

.segmented-control button {
  height: 40px;
  padding: 0 12px;
  color: #596567;
  background: transparent;
  border: 0;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
}

.segmented-control button.is-active {
  color: #fff;
  background: var(--brand-blue);
}

.select-control,
.search-control {
  position: relative;
  display: flex;
  height: 48px;
  align-items: center;
  color: #657173;
  background: #fff;
  border: 1px solid #cdd7d3;
  border-radius: 6px;
}

.select-control > svg,
.search-control > svg {
  position: absolute;
  left: 14px;
  width: 18px;
  height: 18px;
  pointer-events: none;
}

.select-control select,
.search-control input {
  width: 100%;
  height: 100%;
  padding: 0 42px;
  color: var(--ink);
  background: transparent;
  border: 0;
  outline: 0;
}

.select-control select {
  padding-right: 12px;
  cursor: pointer;
}

.clear-search {
  position: absolute;
  right: 6px;
  display: grid;
  width: 36px;
  height: 36px;
  padding: 0;
  place-items: center;
  color: #687476;
  background: transparent;
  border: 0;
  border-radius: 4px;
  cursor: pointer;
}

.clear-search svg {
  width: 17px;
  height: 17px;
}

.product-summary {
  min-height: 28px;
  margin-bottom: 18px;
  color: #667274;
  font-size: 14px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  display: flex;
  min-width: 0;
  min-height: 404px;
  flex-direction: column;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.product-card:hover {
  border-color: #b6c9c1;
  box-shadow: 0 14px 30px rgba(22, 49, 52, 0.1);
  transform: translateY(-4px);
}

.product-card-media {
  position: relative;
  display: grid;
  aspect-ratio: 1 / 1;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 40%, #ffffff 0%, #f3f6f5 62%, #e7ecea 100%);
  border-bottom: 1px solid #e7ecea;
}

.product-card-media img {
  width: 100%;
  height: 100%;
  padding: 18px;
  object-fit: contain;
  object-position: center;
  transition: transform 220ms ease;
}

.product-card:hover .product-card-media img {
  transform: scale(1.02);
}

.product-system-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  min-width: 44px;
  padding: 4px 8px;
  color: #fff;
  background: var(--charcoal);
  border-radius: 3px;
  font-size: 11px;
  font-weight: 800;
  line-height: 1.4;
  text-align: center;
}

.product-card-body {
  display: flex;
  min-width: 0;
  flex: 1;
  flex-direction: column;
  padding: 20px;
}

.product-category {
  margin-bottom: 6px;
  color: var(--brand-green);
  font-size: 12px;
  font-weight: 800;
}

.product-card h3 {
  min-height: 48px;
  margin-bottom: 7px;
  font-size: 18px;
}

.product-model {
  margin-bottom: 18px;
  color: #697577;
  font-family: Consolas, "Microsoft YaHei", sans-serif;
  font-size: 13px;
  overflow-wrap: anywhere;
}

.product-open {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  gap: 7px;
  align-self: flex-start;
  margin-top: auto;
  padding: 0;
  color: var(--brand-blue-dark);
  background: transparent;
  border: 0;
  cursor: pointer;
  font-size: 14px;
  font-weight: 750;
}

.product-open svg {
  width: 17px;
  height: 17px;
}

.product-empty {
  grid-column: 1 / -1;
  display: grid;
  min-height: 260px;
  place-items: center;
  color: #667274;
  background: var(--paper-soft);
  border: 1px dashed #bbc8c3;
  border-radius: 6px;
  text-align: center;
}

.product-empty svg {
  width: 28px;
  height: 28px;
  margin: 0 auto 12px;
}

.product-more {
  display: flex;
  justify-content: center;
  margin-top: 36px;
}

.cases-section {
  color: #fff;
  background: var(--charcoal-2);
}

.light-heading .eyebrow {
  color: #8ee1ca;
}

.light-heading > p {
  color: rgba(255, 255, 255, 0.68);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-rows: 236px;
  gap: 16px;
}

.case-item {
  position: relative;
  min-width: 0;
  height: 100%;
  margin: 0;
  overflow: hidden;
  border-radius: 5px;
}

.case-featured {
  grid-column: span 2;
  grid-row: span 2;
}

.case-item::after {
  position: absolute;
  inset: 24% 0 0;
  background: linear-gradient(180deg, transparent, rgba(8, 23, 25, 0.88));
  content: "";
}

.case-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 260ms ease;
}

.case-item:hover img {
  transform: scale(1.025);
}

.case-item figcaption {
  position: absolute;
  z-index: 1;
  right: 26px;
  bottom: 24px;
  left: 26px;
}

.case-item figcaption span {
  display: block;
  margin-bottom: 5px;
  color: #9eead8;
  font-size: 12px;
  font-weight: 750;
}

.case-item figcaption strong {
  display: block;
  font-size: 20px;
  line-height: 1.35;
}

.case-featured figcaption strong {
  font-size: 28px;
}

.case-with-summary figcaption {
  right: 18px;
  bottom: 18px;
  left: 18px;
}

.case-with-summary figcaption strong {
  font-size: 18px;
}

.case-with-summary figcaption p {
  display: -webkit-box;
  margin: 7px 0 0;
  overflow: hidden;
  color: rgba(255, 255, 255, 0.76);
  font-size: 12px;
  line-height: 1.55;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.about-section {
  background: #fff;
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.86fr) minmax(0, 1.14fr);
  gap: 84px;
  align-items: center;
}

.about-media {
  position: relative;
  min-height: 610px;
}

.about-media img {
  width: calc(100% - 32px);
  height: 610px;
  object-fit: cover;
  object-position: center;
  border-radius: 5px;
}

.about-year {
  position: absolute;
  right: 0;
  bottom: 36px;
  display: flex;
  width: 180px;
  height: 132px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: var(--brand-green);
  border-radius: 5px;
  box-shadow: var(--shadow);
}

.about-year strong {
  font-size: 38px;
  line-height: 1;
}

.about-year span {
  margin-top: 9px;
  font-size: 14px;
}

.about-content h2 {
  margin-bottom: 24px;
}

.about-lead {
  margin-bottom: 16px;
  color: #2c383a;
  font-size: 20px;
  font-weight: 650;
}

.about-content > p:not(.eyebrow):not(.about-lead) {
  color: var(--ink-soft);
}

.qualification-list {
  display: grid;
  gap: 0;
  margin: 34px 0;
  border-top: 1px solid var(--line);
}

.qualification-list > div {
  display: grid;
  grid-template-columns: 148px 1fr;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.qualification-list dt {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--ink-soft);
  font-size: 14px;
}

.qualification-list dt svg {
  width: 18px;
  height: 18px;
  color: var(--brand-blue);
}

.qualification-list dd {
  margin: 0;
  font-weight: 700;
}

.milestones {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--charcoal);
}

.milestones li {
  position: relative;
  padding: 19px 14px 0 0;
}

.milestones li::before {
  position: absolute;
  top: -5px;
  left: 0;
  width: 9px;
  height: 9px;
  background: var(--accent-amber);
  border-radius: 50%;
  content: "";
}

.milestones strong,
.milestones span {
  display: block;
}

.milestones strong {
  margin-bottom: 4px;
  color: var(--brand-blue-dark);
  font-size: 14px;
}

.milestones span {
  color: #667274;
  font-size: 12px;
  line-height: 1.55;
}

.contact-section {
  padding: 104px 0;
  background: #eef4f0;
  border-top: 1px solid #dfe8e3;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(440px, 1.18fr);
  gap: 92px;
  align-items: center;
}

.contact-copy h2 {
  max-width: 520px;
  margin-bottom: 22px;
}

.contact-copy > p:not(.eyebrow) {
  max-width: 540px;
  color: var(--ink-soft);
  font-size: 17px;
}

.contact-channels {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin-top: 30px;
  border-top: 1px solid #cfdcd5;
  border-bottom: 1px solid #cfdcd5;
}

.contact-channels a {
  display: flex;
  min-width: 0;
  min-height: 82px;
  align-items: center;
  gap: 13px;
  padding: 14px 18px 14px 0;
  color: var(--ink);
}

.contact-channels a + a {
  padding-left: 18px;
  border-left: 1px solid #cfdcd5;
}

.contact-channels svg {
  width: 21px;
  height: 21px;
  flex: 0 0 auto;
  color: var(--brand-blue);
}

.contact-channels span,
.contact-channels small,
.contact-channels strong {
  display: block;
  min-width: 0;
}

.contact-channels small {
  margin-bottom: 3px;
  color: #6a7777;
  font-size: 11px;
}

.contact-channels strong {
  font-size: 15px;
}

.wechat-contact {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-top: 34px;
}

.wechat-contact img {
  width: 156px;
  height: 156px;
  object-fit: cover;
  background: #fff;
  border: 8px solid #fff;
  border-radius: 4px;
  box-shadow: 0 8px 24px rgba(20, 48, 50, 0.1);
}

.wechat-contact span,
.wechat-contact strong,
.wechat-contact small {
  display: block;
}

.wechat-contact span {
  color: var(--brand-blue);
  font-size: 13px;
  font-weight: 800;
}

.wechat-contact strong {
  margin: 5px 0;
  font-size: 23px;
}

.wechat-contact small {
  color: #667274;
}

.inquiry-form {
  position: relative;
  display: grid;
  gap: 18px;
  padding: 38px;
  background: #fff;
  border: 1px solid #d7e2dc;
  border-radius: 6px;
  box-shadow: 0 18px 46px rgba(19, 54, 56, 0.1);
}

.form-heading {
  padding-bottom: 6px;
}

.form-heading .eyebrow {
  margin-bottom: 6px;
}

.form-heading h3 {
  margin-bottom: 5px;
  font-size: 24px;
}

.form-heading p:last-child {
  margin: 0;
  color: #697676;
  font-size: 13px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.inquiry-form label {
  display: grid;
  gap: 7px;
}

.inquiry-form label > span {
  color: #485658;
  font-size: 13px;
  font-weight: 700;
}

.inquiry-form input,
.inquiry-form textarea {
  width: 100%;
  color: var(--ink);
  background: #fbfcfb;
  border: 1px solid #cbd6d2;
  border-radius: 5px;
  outline: 0;
}

.inquiry-form input {
  height: 48px;
  padding: 0 13px;
}

.inquiry-form textarea {
  min-height: 118px;
  padding: 12px 13px;
  resize: vertical;
}

.inquiry-form input:focus,
.inquiry-form textarea:focus {
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(6, 123, 155, 0.12);
}

.website-field {
  position: absolute !important;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-consent {
  display: flex !important;
  grid-template-columns: none !important;
  align-items: flex-start;
  gap: 9px !important;
  color: #627071;
  font-size: 12px;
  line-height: 1.55;
}

.form-consent input {
  width: 17px;
  height: 17px;
  flex: 0 0 auto;
  margin: 1px 0 0;
  accent-color: var(--brand-blue);
}

.form-consent span {
  font-weight: 500 !important;
}

.form-status {
  margin: 0;
  padding: 11px 13px;
  color: #176348;
  background: #eaf7f1;
  border-left: 3px solid var(--brand-green);
  font-size: 13px;
  line-height: 1.55;
}

.form-status.is-error {
  color: #8a3029;
  background: #fff0ee;
  border-left-color: #cc493e;
}

.form-submit {
  justify-self: start;
}

.form-submit:disabled {
  cursor: wait;
  opacity: 0.68;
}

.contact-us-section {
  position: relative;
  overflow: hidden;
  padding: 88px 0 72px;
  color: #2a3234;
  background:
    linear-gradient(180deg, #f6f7f8 0%, #eef0f2 100%);
}

.contact-us-skyline {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: min(280px, 42%);
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 220' preserveAspectRatio='xMidYMax meet'%3E%3Cpath fill='%23d9dde1' fill-opacity='0.85' d='M0 220V150h40v-40h30v40h34V100h40v50h26V80h50v70h28V120h36v-40h32v60h24V95h46v55h20V130h34v-36h40v46h26V105h48v50h30V125h38v35h28V115h44v45h24V108h48v42h26V140h34v-26h40v46h22V120h46v40h28V135h42v85z'/%3E%3Cpath fill='%23cfd4d8' fill-opacity='0.95' d='M80 220V170h16v-22h20v22h14V155h26v65zm190 0v-66h18v-28h24v28h16V128h30v92zm270 0v-54h14v-26h22v26h12V126h28v36h16v-22h26v80zm310 0v-60h16v-32h26v32h14V132h32v88zm240 0v-72h20v-26h28v26h16V122h36v98z'/%3E%3C/svg%3E");
  background-position: right bottom;
  background-repeat: no-repeat;
  background-size: min(1200px, 100%) auto;
  opacity: 0.9;
}

.contact-us-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: 56px 72px;
  align-items: start;
}

.contact-us-heading .eyebrow {
  margin-bottom: 12px;
}

.contact-us-heading h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(28px, 3.2vw, 36px);
  font-weight: 780;
  letter-spacing: 0;
  line-height: 1.25;
}

.contact-us-info {
  display: grid;
  gap: 34px;
  margin: 36px 0 0;
}

.contact-us-info > div {
  margin: 0;
}

.contact-us-info dt {
  margin: 0 0 10px;
  color: #8a9295;
  font-size: 14px;
  font-weight: 500;
}

.contact-us-info dd {
  margin: 0;
  color: #1d2426;
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 700;
  line-height: 1.55;
}

.contact-us-info a {
  color: inherit;
}

.contact-us-info a:hover {
  color: var(--brand-blue);
}

.contact-us-aside {
  padding-top: 18px;
}

.contact-us-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px 28px;
  max-width: 460px;
}

.contact-us-links a {
  color: #4c5558;
  font-size: 15px;
  font-weight: 600;
  transition: color 0.18s ease;
}

.contact-us-links a:hover {
  color: var(--brand-blue);
}

.contact-us-social {
  margin-top: 42px;
}

.contact-us-social > p {
  margin: 0 0 16px;
  color: #4c5558;
  font-size: 15px;
  font-weight: 600;
}

.social-icons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.social-icon {
  display: inline-flex;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  color: #6a7275;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(170, 178, 182, 0.55);
  border-radius: 999px;
  transition:
    color 0.18s ease,
    border-color 0.18s ease,
    background 0.18s ease,
    transform 0.18s ease;
}

.social-icon:hover {
  color: var(--brand-blue);
  background: #fff;
  border-color: rgba(6, 123, 155, 0.35);
  transform: translateY(-1px);
}

.social-icon svg,
.social-icon i,
.social-icon i svg {
  width: 18px;
  height: 18px;
}


.site-footer {
  padding: 18px 0 22px;
  color: #6a7275;
  background: #eef0f2;
  border-top: 1px solid rgba(170, 178, 182, 0.28);
}

.footer-layout {
  display: block;
}

.footer-brand img {
  width: 180px;
  padding: 0;
  background: transparent;
  border-radius: 0;
}

.footer-brand p {
  margin: 12px 0 0;
  color: #4c5558;
  font-size: 14px;
  font-weight: 600;
}

.footer-brand address {
  max-width: 500px;
  margin-top: 9px;
  color: #8a9295;
  font-size: 12px;
  font-style: normal;
  line-height: 1.65;
}

.footer-phone {
  display: inline-block;
  margin-top: 6px;
  color: var(--brand-blue);
  font-size: 13px;
  font-weight: 700;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  padding-top: 8px;
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--brand-blue);
}

.copyright {
  margin: 0;
  padding: 0;
  color: #8a9295;
  border-top: 0;
  font-size: 12px;
  text-align: center;
}

.product-dialog {
  width: min(1000px, calc(100% - 40px));
  max-height: min(820px, calc(100vh - 40px));
  padding: 0;
  overflow: hidden;
  background: #fff;
  border: 0;
  border-radius: 7px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.3);
}

.product-dialog::backdrop {
  background: rgba(8, 20, 22, 0.72);
  backdrop-filter: blur(4px);
}

.dialog-shell {
  position: relative;
  display: grid;
  grid-template-columns: minmax(360px, 0.88fr) minmax(0, 1.12fr);
  max-height: min(820px, calc(100vh - 40px));
}

.dialog-close {
  position: absolute;
  z-index: 4;
  top: 16px;
  right: 16px;
  color: #fff;
  background: rgba(17, 28, 30, 0.78);
  border-color: rgba(255, 255, 255, 0.2);
}

.dialog-media {
  display: flex;
  min-height: 560px;
  flex-direction: column;
  justify-content: center;
  padding: 46px 28px 24px;
  overflow: hidden;
  background: #eef2f1;
}

.dialog-media > img {
  width: 100%;
  height: 430px;
  object-fit: contain;
  object-position: center;
}

.dialog-thumbnails {
  display: flex;
  min-height: 66px;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
}

.dialog-thumb {
  display: grid;
  width: 62px;
  height: 62px;
  padding: 4px;
  place-items: center;
  overflow: hidden;
  background: #fff;
  border: 1px solid #cad5d1;
  border-radius: 4px;
  cursor: pointer;
}

.dialog-thumb.is-active {
  border: 2px solid var(--brand-blue);
}

.dialog-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.dialog-content {
  min-width: 0;
  padding: 54px 52px 44px;
  overflow-y: auto;
}

.dialog-system {
  margin-bottom: 8px;
  color: var(--brand-green);
  font-size: 13px;
  font-weight: 800;
}

.dialog-content > h2 {
  padding-right: 24px;
  font-size: 30px;
}

.dialog-model {
  margin: 8px 0 30px;
  color: #657173;
  font-family: Consolas, "Microsoft YaHei", sans-serif;
  overflow-wrap: anywhere;
}

.dialog-content section {
  margin-bottom: 26px;
}

.dialog-content section h3 {
  margin-bottom: 10px;
  color: #334143;
  font-size: 16px;
}

.dialog-content section ul {
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 0;
  color: #5d696b;
  list-style: none;
}

.dialog-content section li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
}

.dialog-content section li::before {
  position: absolute;
  top: 0.75em;
  left: 0;
  width: 5px;
  height: 5px;
  background: var(--brand-blue);
  border-radius: 50%;
  content: "";
}

.toast {
  position: fixed;
  z-index: 2100;
  right: 24px;
  bottom: 24px;
  display: flex;
  max-width: min(420px, calc(100% - 48px));
  min-height: 52px;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  color: #fff;
  background: var(--charcoal);
  border-radius: 6px;
  box-shadow: var(--shadow);
}

.toast svg {
  width: 20px;
  height: 20px;
  color: #91e0c9;
  flex: 0 0 auto;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 520ms ease,
    transform 520ms ease;
}

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

@media (max-width: 1100px) {
  :root {
    --header-height: 70px;
  }

  .nav-shell {
    grid-template-columns: 218px 1fr auto;
    gap: 18px;
  }

  .brand {
    width: 205px;
  }

  .desktop-nav {
    gap: 20px;
  }

  .desktop-nav a {
    font-size: 14px;
  }

  .hero h1 {
    font-size: 60px;
  }

  .hero-lead {
    font-size: 27px;
  }

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

  .about-layout,
  .contact-layout {
    gap: 56px;
  }
}

@media (max-width: 900px) {
  .section {
    padding: 86px 0;
  }

  .desktop-nav,
  .nav-contact {
    display: none;
  }

  .nav-shell {
    grid-template-columns: 1fr auto;
  }

  .mobile-menu-button {
    display: inline-grid;
  }

  .hero {
    min-height: calc(100svh - 96px);
    background-position: 58% center;
  }

  .hero-scrim {
    width: 78%;
  }

  .hero-copy {
    width: min(640px, 82%);
  }

  .hero h1 {
    font-size: 52px;
  }

  .hero-metrics {
    width: 82%;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 18px;
    margin-bottom: 40px;
  }

  .solution-workbench {
    grid-template-columns: 1fr;
  }

  .solution-tabs {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding: 10px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .solution-tab {
    min-height: 62px;
    justify-content: center;
    padding: 0 8px;
    border-bottom: 0;
    border-right: 1px solid #e3eae7;
    font-size: 13px;
  }

  .solution-tab:last-child {
    border-right: 0;
  }

  .solution-stage {
    min-height: 500px;
  }

  .system-layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .system-intro {
    max-width: 600px;
  }

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

  .search-control {
    grid-column: 1 / -1;
  }

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

  .case-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: 250px;
  }

  .about-layout {
    grid-template-columns: 0.78fr 1.22fr;
    gap: 42px;
  }

  .about-media,
  .about-media img {
    min-height: 540px;
    height: 540px;
  }

  .milestones {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 18px;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }

  .contact-copy {
    display: grid;
    grid-template-columns: 1fr auto;
    column-gap: 28px;
  }

  .contact-copy .eyebrow,
  .contact-copy h2,
  .contact-copy > p,
  .contact-channels {
    grid-column: 1;
  }

  .wechat-contact {
    grid-column: 2;
    grid-row: 1 / 5;
    margin-top: 0;
  }

  .wechat-contact div {
    display: none;
  }

  .contact-us-layout {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .contact-us-aside {
    padding-top: 0;
  }

  .contact-us-links {
    max-width: none;
  }

  .dialog-shell {
    grid-template-columns: 42% 58%;
  }

  .dialog-content {
    padding: 54px 34px 38px;
  }
}

@media (max-width: 680px) {
  :root {
    --header-height: 64px;
  }

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

  .section {
    padding: 72px 0;
  }

  h2 {
    font-size: 32px;
  }

  .brand {
    width: 184px;
  }

  .icon-button {
    width: 42px;
    height: 42px;
  }

  .hero {
    min-height: calc(100svh - 92px);
    background-position: 63% center;
  }

  .hero::before {
    background: rgba(5, 18, 20, 0.55);
  }

  .hero-scrim {
    width: 100%;
    background: rgba(4, 22, 25, 0.38);
  }

  .hero-inner {
    padding: 66px 0 34px;
  }

  .hero-copy {
    width: 100%;
  }

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

  .hero-lead {
    font-size: 24px;
  }

  .hero-description {
    max-width: 520px;
    font-size: 16px;
  }

  .hero-actions .button {
    flex: 1 1 150px;
  }

  .hero-metrics {
    width: 100%;
    margin-top: 42px;
  }

  .hero-metrics > div {
    flex: 1;
    padding: 0 12px;
  }

  .hero-metrics dt {
    font-size: 19px;
  }

  .hero-metrics dd {
    font-size: 11px;
  }

  .industry-list {
    min-height: 70px;
    grid-template-columns: repeat(5, minmax(74px, 1fr));
    overflow-x: auto;
  }

  .industry-list span {
    min-height: 70px;
    flex-direction: column;
    gap: 5px;
    font-size: 11px;
  }

  .solution-workbench {
    min-height: 0;
  }

  .solution-tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .solution-tab {
    min-height: 54px;
    border: 1px solid #e3eae7;
    border-radius: 4px;
  }

  .solution-stage {
    min-height: 530px;
    align-items: flex-end;
  }

  .solution-stage-content {
    width: 100%;
    padding: 34px 26px;
  }

  .solution-stage h3 {
    font-size: 29px;
  }

  .system-band {
    padding: 66px 0;
  }

  .system-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px 12px;
  }

  .system-flow::before {
    display: none;
  }

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

  .segmented-control {
    width: 100%;
    grid-template-columns: repeat(3, 1fr);
  }

  .select-control,
  .search-control {
    width: 100%;
  }

  .search-control {
    grid-column: auto;
  }

  .product-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .product-card {
    min-height: 0;
    display: grid;
    grid-template-columns: 42% 58%;
  }

  .product-card-media {
    aspect-ratio: 1 / 1;
    border-right: 1px solid #e7ecea;
    border-bottom: 0;
  }

  .product-card-media img {
    padding: 12px;
  }

  .product-card-body {
    padding: 16px;
  }

  .product-card h3 {
    min-height: 0;
    font-size: 16px;
  }

  .product-model {
    margin-bottom: 10px;
    font-size: 11px;
  }

  .case-grid {
    grid-template-columns: 1fr;
    grid-template-rows: none;
    grid-auto-rows: 250px;
  }

  .case-featured {
    grid-column: auto;
    grid-row: auto;
  }

  .case-featured figcaption strong,
  .case-item figcaption strong {
    font-size: 20px;
  }

  .about-layout {
    grid-template-columns: 1fr;
  }

  .about-media,
  .about-media img {
    min-height: 390px;
    height: 390px;
  }

  .about-content {
    padding-top: 12px;
  }

  .qualification-list > div {
    grid-template-columns: 120px 1fr;
  }

  .contact-section {
    padding: 72px 0;
  }

  .contact-copy {
    display: block;
  }

  .wechat-contact {
    margin-top: 28px;
  }

  .wechat-contact div {
    display: block;
  }

  .wechat-contact img {
    width: 132px;
    height: 132px;
  }

  .contact-channels {
    grid-template-columns: 1fr;
  }

  .contact-channels a + a {
    padding-left: 0;
    border-top: 1px solid #cfdcd5;
    border-left: 0;
  }

  .inquiry-form {
    padding: 24px 20px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .form-submit {
    width: 100%;
  }

  .contact-us-section {
    padding: 64px 0 52px;
  }

  .contact-us-info {
    margin-top: 36px;
    gap: 26px;
  }

  .contact-us-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 20px;
  }

  .contact-us-social {
    margin-top: 30px;
  }

  .footer-layout {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .footer-links {
    gap: 20px;
  }

  .product-dialog {
    width: calc(100% - 18px);
    max-height: calc(100svh - 18px);
  }

  .dialog-shell {
    display: block;
    max-height: calc(100svh - 18px);
    overflow-y: auto;
  }

  .dialog-media {
    min-height: 330px;
    padding: 28px 20px 16px;
  }

  .dialog-media > img {
    height: 280px;
  }

  .dialog-content {
    padding: 30px 24px 36px;
    overflow: visible;
  }

  .dialog-content > h2 {
    padding-right: 0;
    font-size: 25px;
  }

  .dialog-close {
    position: fixed;
    top: 18px;
    right: 18px;
  }

  .toast {
    right: 16px;
    bottom: 16px;
    max-width: calc(100% - 32px);
  }
}

@media (max-width: 390px) {
  .hero h1 {
    font-size: 39px;
  }

  .hero-lead {
    font-size: 21px;
  }

  .hero-metrics dt {
    font-size: 17px;
  }

  .wechat-contact {
    align-items: flex-start;
  }

  .wechat-contact img {
    width: 116px;
    height: 116px;
  }
}

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

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

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