:root {
  --navy: #002b5c;
  --blue: #0057b8;
  --red: #bf0a30;
  --ink: #102033;
  --muted: #5f6b7a;
  --line: #d7dee8;
  --soft: #f3f6fa;
  --white: #ffffff;
  --shadow: 0 18px 42px rgba(0, 43, 92, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--white);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 12px clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(215, 222, 232, 0.9);
  backdrop-filter: blur(12px);
}

.brand img {
  width: 156px;
  height: auto;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  color: var(--navy);
  font-size: 14px;
  font-weight: 700;
}

.main-nav a {
  padding: 10px 0;
}

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

.nav-cta {
  padding: 10px 18px !important;
  color: var(--white) !important;
  background: var(--red);
  border-radius: 4px;
}

.language-switcher {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--white);
}

.language-switcher button {
  min-height: 30px;
  padding: 0 9px;
  border: 0;
  border-radius: 4px;
  color: var(--navy);
  background: transparent;
  font-size: 12px;
  font-weight: 900;
  cursor: pointer;
}

.language-switcher button.is-active {
  color: var(--white);
  background: var(--navy);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: var(--white);
  border-radius: 4px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--navy);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.95fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: clamp(40px, 7vw, 92px) clamp(20px, 5vw, 72px) 32px;
  background:
    linear-gradient(90deg, rgba(0, 43, 92, 0.96), rgba(0, 87, 184, 0.86)),
    linear-gradient(135deg, #0b2d5f, #ffffff);
  color: var(--white);
  overflow: hidden;
}

.hero-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--red);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #ffcfdb;
}

h1,
h2,
h3,
p {
  letter-spacing: 0;
}

h1 {
  margin: 0 0 18px;
  max-width: 780px;
  font-size: clamp(42px, 6vw, 76px);
  line-height: 0.98;
}

.hero-lede {
  max-width: 680px;
  margin: 0 0 28px;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.hero-facts span {
  padding: 9px 12px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 4px;
  color: rgba(255, 255, 255, 0.86);
  background: rgba(255, 255, 255, 0.08);
  font-size: 13px;
  font-weight: 800;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 4px;
  font-weight: 800;
}

.button.primary {
  background: var(--red);
  color: var(--white);
}

.button.secondary {
  border: 1px solid rgba(255, 255, 255, 0.68);
  color: var(--white);
}

.hero-visual {
  align-self: end;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.hero-visual img {
  max-height: 620px;
  object-fit: contain;
  filter: drop-shadow(0 26px 40px rgba(0, 0, 0, 0.22));
}

.quick-search {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 16px;
  align-items: end;
  margin: -28px clamp(20px, 5vw, 72px) 0;
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  position: relative;
  z-index: 3;
}

label {
  display: grid;
  gap: 8px;
  color: var(--navy);
  font-size: 13px;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  min-height: 46px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font: inherit;
  color: var(--ink);
  background: var(--white);
}

textarea {
  resize: vertical;
}

button,
.quick-search button,
.contact-form button {
  min-height: 46px;
  padding: 0 20px;
  border: 0;
  border-radius: 4px;
  color: var(--white);
  background: var(--navy);
  font-weight: 800;
  cursor: pointer;
}

section {
  padding: clamp(56px, 8vw, 96px) clamp(20px, 5vw, 72px);
}

.section-heading {
  max-width: 820px;
  margin-bottom: 30px;
}

h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
}

h3 {
  margin: 0 0 10px;
  color: var(--navy);
  font-size: 20px;
}

p {
  line-height: 1.62;
}

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

.intro article,
.solution-card,
.metrics div {
  min-height: 170px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.intro article p,
.solution-card p {
  margin: 0;
  color: var(--muted);
}

.solutions,
.industries,
.platform,
.insights {
  background: var(--soft);
}

.data-collection {
  background: var(--white);
}

.data-layout {
  display: grid;
  grid-template-columns: minmax(340px, 0.88fr) minmax(0, 1.12fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: stretch;
}

.data-panel {
  display: grid;
  align-content: start;
  gap: 18px;
  min-height: 420px;
  padding: 28px;
  border-radius: 8px;
  color: var(--white);
  background:
    linear-gradient(145deg, rgba(0, 43, 92, 0.96), rgba(191, 10, 48, 0.82)),
    #002b5c;
  box-shadow: var(--shadow);
}

.data-kicker {
  color: #ffcfdb;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.data-panel h3 {
  margin: 0;
  color: var(--white);
  font-size: clamp(26px, 3vw, 40px);
  line-height: 1.08;
}

.data-panel p {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
}

.data-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.data-stats div {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.1);
}

.data-stats strong {
  font-size: 28px;
}

.data-stats span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
  font-weight: 800;
}

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

.data-services article {
  min-height: 190px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.data-services p {
  margin: 0;
  color: var(--muted);
}

.data-process {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.data-process span {
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--navy);
  background: var(--soft);
  font-size: 13px;
  font-weight: 900;
}

.platform-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: stretch;
}

.command-center {
  min-height: 420px;
  padding: 26px;
  border: 1px solid rgba(0, 43, 92, 0.18);
  border-radius: 8px;
  color: var(--white);
  background:
    linear-gradient(145deg, rgba(7, 29, 56, 0.96), rgba(0, 87, 184, 0.86)),
    #071d38;
  box-shadow: var(--shadow);
}

.screen-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
}

.screen-head span {
  color: #ffcfdb;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.screen-head strong {
  font-size: 14px;
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 26px 0;
}

.status-grid div {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
}

.status-grid strong {
  color: rgba(255, 255, 255, 0.74);
  font-size: 12px;
}

.status-grid span {
  font-size: 28px;
  font-weight: 900;
}

.signal-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.signal-list li {
  padding: 13px 14px;
  border-left: 4px solid #ffcfdb;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  font-weight: 800;
}

.platform-points {
  display: grid;
  gap: 18px;
}

.platform-points article,
.robotics-steps article {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.platform-points p,
.robotics-steps p,
.robotics-copy p {
  margin: 0;
  color: var(--muted);
}

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

.solution-card span {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--red);
  font-weight: 900;
}

.workers {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(340px, 1.08fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

.robotics {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(340px, 1fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.robotics-steps {
  display: grid;
  gap: 18px;
}

.robotics-steps strong {
  display: inline-flex;
  margin-bottom: 22px;
  color: var(--red);
  font-size: 13px;
  font-weight: 900;
}

.worker-copy {
  max-width: 680px;
}

.worker-copy p {
  color: var(--muted);
}

.worker-copy ul {
  display: grid;
  gap: 10px;
  margin: 24px 0 0;
  padding-left: 18px;
  color: var(--ink);
  font-weight: 700;
}

.worker-images {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  align-items: end;
}

.worker-images img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  object-fit: contain;
}

.industry-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.industry-list span {
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--navy);
  background: var(--white);
  font-weight: 800;
}

.culture {
  background:
    linear-gradient(135deg, rgba(0, 43, 92, 0.98), rgba(0, 87, 184, 0.9)),
    #002b5c;
  color: var(--white);
}

.culture h2,
.culture h3 {
  color: var(--white);
}

.culture-panel {
  max-width: 1120px;
}

.culture-values {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.culture-values div {
  min-height: 160px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.culture-values p {
  color: rgba(255, 255, 255, 0.8);
}

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

.metrics div {
  display: grid;
  gap: 12px;
}

.metrics strong {
  color: var(--navy);
  font-size: 22px;
}

.metrics span {
  color: var(--muted);
  line-height: 1.45;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(340px, 0.74fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}

.contact > div p {
  max-width: 680px;
  color: var(--muted);
}

.contact-lines {
  display: grid;
  gap: 10px;
  margin-top: 22px;
  color: var(--navy);
  font-weight: 800;
}

.contact-lines a {
  color: var(--blue);
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(20px, 5vw, 72px);
  color: var(--white);
  background: #071d38;
}

.footer img {
  width: 128px;
  margin-bottom: 10px;
  background: var(--white);
  border-radius: 4px;
}

.footer p {
  margin: 0;
  color: rgba(255, 255, 255, 0.75);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  font-weight: 800;
}

@media (max-width: 980px) {
  .nav-toggle {
    display: block;
  }

  .header-actions {
    gap: 10px;
  }

  .main-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 14px 24px 24px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
  }

  .main-nav.is-open {
    display: flex;
  }

  .main-nav a {
    padding: 14px 0;
  }

  .hero,
  .workers,
  .robotics,
  .data-layout,
  .platform-layout,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: 320px;
  }

  .quick-search,
  .intro-grid,
  .data-services,
  .solution-grid,
  .culture-values,
  .status-grid,
  .metrics {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .site-header {
    min-height: 68px;
  }

  .brand img {
    width: 130px;
  }

  .language-switcher button {
    min-height: 28px;
    padding: 0 7px;
    font-size: 11px;
  }

  .main-nav {
    top: 68px;
  }

  .hero {
    padding-top: 34px;
  }

  .quick-search,
  .intro-grid,
  .data-services,
  .data-stats,
  .solution-grid,
  .worker-images,
  .culture-values,
  .status-grid,
  .metrics {
    grid-template-columns: 1fr;
  }

  .quick-search {
    margin-top: 0;
    border-radius: 0;
    border-left: 0;
    border-right: 0;
  }

  .footer {
    display: grid;
  }
}