:root {
  --background: #eef3f7;
  --background-deep: #e1eaf1;
  --surface: #f8fbfd;
  --surface-strong: #ffffff;
  --ink: #132838;
  --muted: #5b6e7c;
  --brand: #123a5a;
  --brand-bright: #1d5f8f;
  --brand-soft: #d5e3ed;
  --line: #c7d5df;
  --line-dark: #99afbf;
  --shadow: 0 18px 50px rgba(18, 58, 90, 0.12);
  --shadow-soft: 0 10px 28px rgba(18, 58, 90, 0.08);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background: var(--background);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

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

button {
  font: inherit;
}

:focus-visible {
  outline: 3px solid #2b79ad;
  outline-offset: 3px;
}

.container {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.section {
  padding: 104px 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  transform: translateY(-150%);
  padding: 10px 16px;
  color: #fff;
  background: var(--brand);
  border-radius: 8px;
  text-decoration: none;
}

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

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid rgba(153, 175, 191, 0.52);
  background: rgba(238, 243, 247, 0.94);
  backdrop-filter: blur(16px);
}

.header-inner {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: 82px;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: 12px;
  text-decoration: none;
}

.brand img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.brand-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  line-height: 1.2;
}

.brand-copy strong {
  color: var(--brand);
  font-size: 17px;
  font-weight: 750;
  letter-spacing: 0.015em;
}

.brand-copy small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
}

.primary-nav a {
  position: relative;
  color: #294557;
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
}

.primary-nav a::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  background: var(--brand-bright);
  transition: transform 180ms ease;
}

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

.language-switch {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 4px;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
}

.language-switch button {
  min-width: 46px;
  min-height: 34px;
  padding: 0 11px;
  color: var(--muted);
  border: 0;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
}

.language-switch button[aria-pressed="true"] {
  color: #fff;
  background: var(--brand);
  box-shadow: 0 4px 12px rgba(18, 58, 90, 0.2);
}

.language-switch span {
  width: 1px;
  height: 17px;
  background: var(--line);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 11px;
  border: 1px solid var(--line-dark);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.7);
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 4px 0;
  background: var(--brand);
  transition: transform 180ms ease, opacity 180ms ease;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 96px;
  background:
    radial-gradient(circle at 10% 12%, rgba(255, 255, 255, 0.76), transparent 30%),
    linear-gradient(135deg, #e8eff4 0%, #dbe7ef 100%);
}

.hero-grid-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.38;
  background-image:
    linear-gradient(rgba(18, 58, 90, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 58, 90, 0.06) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(to right, transparent, #000 68%, #000);
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(420px, 0.96fr);
  align-items: center;
  gap: clamp(52px, 7vw, 88px);
}

.eyebrow {
  display: flex;
  align-items: center;
  margin: 0 0 16px;
  gap: 10px;
  color: var(--brand-bright);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 28px;
  height: 2px;
  content: "";
  background: currentColor;
}

.eyebrow.light {
  color: #a9d3ed;
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  color: var(--brand);
  font-size: clamp(43px, 5.2vw, 72px);
  font-weight: 760;
  letter-spacing: -0.045em;
  line-height: 1.03;
}

.hero-summary {
  max-width: 690px;
  margin: 26px 0 0;
  color: #405767;
  font-size: clamp(17px, 1.35vw, 19px);
  line-height: 1.75;
}

.hero-meta {
  margin: 20px 0 0;
  color: var(--brand);
  font-size: 14px;
  font-weight: 750;
  letter-spacing: 0.025em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  margin-top: 32px;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 11px;
  font-size: 14px;
  font-weight: 750;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

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

.button-primary {
  color: #fff;
  background: var(--brand);
  box-shadow: 0 12px 24px rgba(18, 58, 90, 0.2);
}

.button-primary:hover {
  background: #0e304b;
  box-shadow: 0 16px 32px rgba(18, 58, 90, 0.25);
}

.button-secondary {
  color: var(--brand);
  border-color: var(--line-dark);
  background: rgba(255, 255, 255, 0.52);
}

.button-secondary:hover {
  background: #fff;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  margin: 26px 0 0;
  padding: 0;
  gap: 9px;
  list-style: none;
}

.hero-tags li {
  padding: 7px 11px;
  color: #3e5b6e;
  border: 1px solid #b6c9d6;
  border-radius: 999px;
  background: rgba(248, 251, 253, 0.62);
  font-size: 12px;
  font-weight: 650;
}

.hero-media {
  margin: 0;
}

.hero-image-frame {
  position: relative;
  overflow: hidden;
  min-height: 560px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-lg);
  background: #d6e0e7;
  box-shadow: var(--shadow);
}

.hero-image-frame::after {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
  background: linear-gradient(180deg, transparent 58%, rgba(12, 39, 59, 0.62) 100%);
}

.hero-image-frame > img {
  width: 100%;
  height: 100%;
  min-height: 560px;
  object-fit: cover;
  object-position: 45% center;
  transform: scale(1.015);
}

.hero-image-label {
  position: absolute;
  z-index: 2;
  right: 24px;
  bottom: 22px;
  left: 24px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  color: #fff;
}

.hero-image-label span {
  font-size: 13px;
}

.hero-image-label strong {
  font-size: 12px;
  letter-spacing: 0.16em;
  white-space: nowrap;
}

.proof-strip {
  color: #fff;
  background: var(--brand);
}

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

.proof-item {
  position: relative;
  display: flex;
  min-height: 132px;
  flex-direction: column;
  justify-content: center;
  padding: 24px 28px;
}

.proof-item + .proof-item::before {
  position: absolute;
  top: 26px;
  bottom: 26px;
  left: 0;
  width: 1px;
  content: "";
  background: rgba(255, 255, 255, 0.17);
}

.proof-item strong {
  color: #fff;
  font-size: 22px;
  font-weight: 730;
  line-height: 1.25;
}

.proof-item span {
  margin-top: 7px;
  color: #bcd1df;
  font-size: 13px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.65fr);
  align-items: end;
  margin-bottom: 42px;
  gap: 72px;
}

.section-heading.compact {
  margin-bottom: 36px;
}

.section-heading h2,
.about-copy h2,
.contact-intro h2 {
  margin: 0;
  color: var(--brand);
  font-size: clamp(34px, 3.4vw, 50px);
  font-weight: 740;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

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

.products-section {
  background: var(--background);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.product-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-strong);
  box-shadow: 0 5px 18px rgba(18, 58, 90, 0.05);
  transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: #9eb5c5;
  box-shadow: var(--shadow-soft);
}

.product-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: #dfe6eb;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 420ms ease;
}

.product-card:hover .product-image img {
  transform: scale(1.025);
}

.product-image span {
  position: absolute;
  top: 14px;
  left: 14px;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #fff;
  border-radius: 50%;
  background: rgba(18, 58, 90, 0.88);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  backdrop-filter: blur(8px);
}

.product-content {
  min-height: 188px;
  padding: 24px 24px 26px;
}

.product-content h3 {
  margin: 0;
  color: var(--brand);
  font-size: 20px;
  line-height: 1.3;
}

.product-content p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.capabilities-section {
  background: var(--background-deep);
}

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

.capability-card {
  min-height: 260px;
  padding: 28px;
  border-top: 3px solid var(--brand-bright);
  background: rgba(248, 251, 253, 0.72);
}

.capability-index {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--brand-bright);
  border: 1px solid #9fb6c6;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 800;
}

.capability-card h3 {
  margin: 34px 0 0;
  color: var(--brand);
  font-size: 20px;
  line-height: 1.3;
}

.capability-card p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.inspection-feature {
  display: grid;
  overflow: hidden;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.75fr);
  margin-top: 24px;
  border-radius: var(--radius-lg);
  background: var(--brand);
  box-shadow: var(--shadow-soft);
}

.inspection-image {
  min-height: 470px;
}

.inspection-image img {
  width: 100%;
  height: 100%;
  min-height: 470px;
  object-fit: cover;
  object-position: center 48%;
}

.inspection-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 52px;
  color: #fff;
}

.inspection-copy h3 {
  margin: 0;
  color: #fff;
  font-size: clamp(29px, 3vw, 40px);
  line-height: 1.12;
}

.inspection-copy > p:not(.eyebrow) {
  margin: 18px 0 0;
  color: #c5d7e3;
}

.inspection-copy ul {
  display: grid;
  margin: 28px 0 0;
  padding: 0;
  gap: 11px;
  list-style: none;
}

.inspection-copy li {
  position: relative;
  padding-left: 25px;
  color: #eef6fb;
  font-size: 14px;
}

.inspection-copy li::before {
  position: absolute;
  top: 0.66em;
  left: 0;
  width: 10px;
  height: 2px;
  content: "";
  background: #79b9df;
}

.about-section {
  background: #edf2f5;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  align-items: center;
  gap: clamp(50px, 7vw, 90px);
}

.about-media {
  position: relative;
  overflow: hidden;
  min-height: 620px;
  border-radius: var(--radius-lg);
  background: #cbd8e1;
  box-shadow: var(--shadow);
}

.about-media > img {
  width: 100%;
  height: 100%;
  min-height: 620px;
  object-fit: cover;
  object-position: center;
}

.about-media::after {
  position: absolute;
  inset: auto 0 0;
  height: 42%;
  content: "";
  background: linear-gradient(to top, rgba(10, 35, 52, 0.75), transparent);
}

.about-media-caption {
  position: absolute;
  z-index: 2;
  right: 28px;
  bottom: 24px;
  left: 28px;
  display: flex;
  flex-direction: column;
  color: #fff;
}

.about-media-caption strong {
  font-size: 19px;
}

.about-media-caption span {
  margin-top: 4px;
  color: #d8e7f0;
  font-size: 13px;
}

.about-copy h2 {
  max-width: 660px;
}

.about-copy > p:not(.eyebrow) {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.about-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 36px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-dark);
}

.about-facts > div {
  padding: 21px 16px 0 0;
}

.about-facts > div + div {
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.about-facts dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.about-facts dd {
  margin: 7px 0 0;
  color: var(--brand);
  font-size: 17px;
  font-weight: 760;
  line-height: 1.35;
}

.contact-section {
  padding-top: 64px;
  background: var(--background);
}

.contact-panel {
  display: grid;
  overflow: hidden;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
  border-radius: var(--radius-lg);
  color: #fff;
  background:
    radial-gradient(circle at 8% 0%, rgba(60, 137, 188, 0.28), transparent 34%),
    var(--brand);
  box-shadow: var(--shadow);
}

.contact-intro {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 56px;
  border-right: 1px solid rgba(255, 255, 255, 0.14);
}

.contact-intro h2 {
  color: #fff;
}

.contact-intro > p:not(.eyebrow) {
  margin: 18px 0 0;
  color: #c8d9e4;
}

.contact-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: 34px;
  gap: 1px;
  background: rgba(255, 255, 255, 0.12);
}

.contact-details > * {
  display: flex;
  min-width: 0;
  min-height: 128px;
  flex-direction: column;
  justify-content: center;
  padding: 24px;
  background: rgba(14, 48, 75, 0.96);
  text-decoration: none;
}

.contact-details > a:hover {
  background: #164a70;
}

.contact-details span {
  color: #9fc2d9;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact-details strong {
  margin-top: 9px;
  overflow-wrap: anywhere;
  color: #fff;
  font-size: 16px;
  line-height: 1.45;
}

.site-footer {
  padding: 34px 0 40px;
  color: var(--muted);
  background: var(--background);
}

.footer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.footer-brand {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 14px;
}

.footer-brand img {
  width: 52px;
  height: 52px;
  object-fit: contain;
}

.footer-brand > div {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.footer-brand strong {
  color: var(--brand);
  font-size: 13px;
}

.footer-brand span,
.site-footer p {
  margin: 3px 0 0;
  font-size: 12px;
}

@media (max-width: 1020px) {
  .header-inner {
    gap: 20px;
  }

  .primary-nav {
    gap: 20px;
  }

  .brand-copy small {
    display: none;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.8fr);
    gap: 42px;
  }

  .hero h1 {
    font-size: clamp(42px, 5.8vw, 58px);
  }

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

  .capability-card {
    min-height: 225px;
  }

  .contact-intro {
    padding: 42px;
  }

  .contact-details {
    padding: 24px;
  }
}

@media (max-width: 860px) {
  .section {
    padding: 82px 0;
  }

  .header-inner {
    grid-template-columns: 1fr auto auto;
    min-height: 74px;
  }

  .js .menu-toggle {
    display: block;
    grid-column: 2;
  }

  .js .primary-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    left: 0;
    display: none;
    align-items: stretch;
    flex-direction: column;
    padding: 18px 20px 22px;
    gap: 0;
    border: 1px solid var(--line);
    border-top: 0;
    border-radius: 0 0 18px 18px;
    background: rgba(238, 243, 247, 0.98);
    box-shadow: var(--shadow-soft);
  }

  .js .primary-nav.is-open {
    display: flex;
  }

  .primary-nav a {
    min-height: 46px;
    padding: 12px 6px;
    border-bottom: 1px solid var(--line);
  }

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

  .language-switch {
    grid-column: 3;
  }

  .hero {
    padding: 74px 0 78px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .hero-copy {
    max-width: 720px;
  }

  .hero-image-frame,
  .hero-image-frame > img {
    min-height: 520px;
  }

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

  .proof-item:nth-child(3)::before {
    display: none;
  }

  .proof-item:nth-child(n + 3) {
    border-top: 1px solid rgba(255, 255, 255, 0.14);
  }

  .section-heading {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 18px;
  }

  .section-heading > p {
    max-width: 680px;
  }

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

  .inspection-feature {
    grid-template-columns: 1fr;
  }

  .inspection-image,
  .inspection-image img {
    min-height: 440px;
    max-height: 560px;
  }

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

  .about-media,
  .about-media > img {
    min-height: 540px;
    max-height: 720px;
  }

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

  .contact-intro {
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  }

  .footer-grid {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 600px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .section {
    padding: 68px 0;
  }

  .brand img {
    width: 42px;
    height: 42px;
  }

  .brand-copy strong {
    max-width: 132px;
    overflow: hidden;
    font-size: 14px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .header-inner {
    gap: 9px;
  }

  .language-switch {
    min-height: 40px;
    padding: 3px;
  }

  .language-switch button {
    min-width: 42px;
    min-height: 32px;
    padding: 0 8px;
  }

  .hero {
    padding: 58px 0 62px;
  }

  .hero h1 {
    font-size: clamp(38px, 12vw, 52px);
  }

  .hero-summary {
    font-size: 16px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .hero-image-frame,
  .hero-image-frame > img {
    min-height: 430px;
  }

  .hero-image-label {
    right: 18px;
    bottom: 17px;
    left: 18px;
  }

  .hero-image-label span {
    max-width: 150px;
  }

  .proof-grid,
  .product-grid,
  .capability-grid,
  .contact-details {
    grid-template-columns: 1fr;
  }

  .proof-item {
    min-height: 108px;
    padding: 22px 8px;
  }

  .proof-item + .proof-item::before {
    top: 0;
    right: 0;
    bottom: auto;
    width: auto;
    height: 1px;
  }

  .proof-item:nth-child(3)::before {
    display: block;
  }

  .proof-item:nth-child(n + 3) {
    border-top: 0;
  }

  .section-heading h2,
  .about-copy h2,
  .contact-intro h2 {
    font-size: 35px;
  }

  .section-heading > p {
    font-size: 15px;
  }

  .product-content {
    min-height: 0;
  }

  .capability-card {
    min-height: 0;
  }

  .inspection-image,
  .inspection-image img {
    min-height: 360px;
  }

  .inspection-copy {
    padding: 36px 26px;
  }

  .about-media,
  .about-media > img {
    min-height: 440px;
  }

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

  .about-facts > div {
    padding: 17px 0;
  }

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

  .contact-section {
    padding-top: 34px;
  }

  .contact-intro {
    padding: 36px 26px;
  }

  .contact-details {
    padding: 18px;
  }

  .contact-details > * {
    min-height: 110px;
  }

  .footer-brand {
    align-items: flex-start;
  }
}

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

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