:root {
  color-scheme: light;
  --ink: #142126;
  --muted: #5e6c70;
  --line: #d9e1e2;
  --line-strong: #b9c7c9;
  --paper: #f7f9f9;
  --surface: #ffffff;
  --soft: #edf2f2;
  --accent: #087f78;
  --accent-dark: #05615c;
  --accent-soft: #dff2f0;
  --radius: 14px;
  --shadow: 0 24px 70px rgba(31, 58, 62, 0.1);
  --container: 1380px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Segoe UI Variable", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

.footer-col > span {
  color: var(--muted);
}

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

button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 35%, transparent);
  outline-offset: 4px;
}

.related-links {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.related-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
  color: var(--accent-dark);
  font-weight: 700;
}

.related-links a:hover {
  color: var(--accent);
}

.related-links svg {
  width: 20px;
  flex: 0 0 auto;
}

.company-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 28px 0 0;
  background: var(--line);
}

.company-facts > div {
  background: var(--surface);
  padding: 20px;
}

.company-facts dt {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.company-facts dd {
  margin: 4px 0 0;
  font-weight: 700;
}

@media (max-width: 760px) {
  .company-facts {
    grid-template-columns: 1fr;
  }
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  transform: translateY(-160%);
  border-radius: 8px;
  background: var(--ink);
  color: white;
  padding: 10px 14px;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  background: rgba(247, 249, 249, 0.92);
  backdrop-filter: blur(18px);
}

.nav-shell {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: 76px;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 196px;
  gap: 10px;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  object-fit: cover;
}

.brand span,
.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.05;
}

.brand small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 8px;
  font-weight: 750;
  letter-spacing: 0.12em;
  line-height: 1;
}

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

.main-nav a {
  color: #34464a;
  font-size: 14px;
  font-weight: 650;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--accent-dark);
}

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

.language-link {
  min-width: 42px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  padding: 11px 18px;
  font-size: 15px;
  font-weight: 760;
  line-height: 1.2;
  white-space: nowrap;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.button:hover {
  background: var(--accent-dark);
}

.button:active {
  transform: scale(0.98);
}

.button svg,
.article-card span svg {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
}

.button.secondary {
  border-color: var(--line-strong);
  background: transparent;
  color: var(--ink);
}

.button.secondary:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
}

.menu-button svg {
  width: 22px;
  height: 22px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero {
  overflow: hidden;
  padding: 68px 0 74px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(520px, 1.25fr);
  min-height: calc(100dvh - 150px);
  align-items: center;
  gap: clamp(36px, 6vw, 92px);
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.hero h1,
.page-hero h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(44px, 5.8vw, 84px);
  font-weight: 720;
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.hero h1 em,
.page-hero h1 em {
  color: var(--accent);
  font-style: normal;
}

.hero-lead,
.page-lead {
  max-width: 650px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 1.6vw, 21px);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-visual {
  position: relative;
}

.hero-visual::before {
  position: absolute;
  inset: 9% -8% -7% 16%;
  z-index: -1;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  filter: blur(45px);
  content: "";
}

.hero-visual img {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
}

.hero-proof li {
  border-left: 1px solid var(--line);
  padding: 4px 18px;
}

.hero-proof li:first-child {
  padding-left: 0;
  border-left: 0;
}

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

.hero-proof strong {
  font-size: 15px;
}

.hero-proof span {
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.answer-strip {
  border-block: 1px solid var(--line);
  background: var(--surface);
}

.answer-strip .container {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 40px;
  padding-block: 28px;
}

.answer-strip strong {
  font-size: 16px;
}

.answer-strip p {
  max-width: 980px;
  margin: 0;
  color: var(--muted);
}

.section {
  padding: 110px 0;
}

.section.compact {
  padding: 76px 0;
}

.section.surface {
  border-block: 1px solid var(--line);
  background: var(--surface);
}

.section-header {
  max-width: 820px;
  margin-bottom: 50px;
}

.section-header h2,
.content h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 58px);
  font-weight: 710;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.section-header p,
.content > p {
  max-width: 720px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.service-index {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.4fr);
  gap: 60px;
}

.service-index-intro {
  align-self: start;
  position: sticky;
  top: 120px;
}

.service-list {
  border-top: 1px solid var(--line-strong);
}

.service-row {
  display: grid;
  grid-template-columns: 54px 1fr auto;
  align-items: center;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  padding: 28px 4px;
  transition: padding 180ms ease, color 180ms ease;
}

.service-row:hover {
  padding-inline: 12px;
  color: var(--accent-dark);
}

.service-row small {
  color: var(--muted);
  font-family: ui-monospace, "Cascadia Code", monospace;
}

.service-row h3 {
  margin: 0;
  font-size: clamp(21px, 2.4vw, 32px);
  letter-spacing: -0.025em;
}

.service-row span {
  color: var(--muted);
  font-size: 14px;
}

.feature-split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, 0.75fr);
  align-items: center;
  gap: clamp(44px, 8vw, 110px);
}

.feature-split.reverse {
  grid-template-columns: minmax(340px, 0.75fr) minmax(0, 1.05fr);
}

.feature-split.reverse .feature-media {
  order: 2;
}

.feature-media img {
  width: 100%;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: var(--shadow);
}

.feature-copy h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 56px);
  letter-spacing: -0.045em;
  line-height: 1.07;
}

.feature-copy > p {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.check-list {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
}

.check-list li::before {
  position: absolute;
  top: 0.65em;
  left: 2px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  content: "";
}

.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.process article {
  min-height: 260px;
  background: var(--surface);
  padding: 30px;
}

.process small {
  color: var(--accent-dark);
  font-family: ui-monospace, "Cascadia Code", monospace;
  font-weight: 800;
}

.process h3 {
  margin: 52px 0 12px;
  font-size: 22px;
}

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

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

.industry {
  min-height: 230px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 28px;
}

.industry:nth-child(2),
.industry:nth-child(5) {
  background: var(--soft);
}

.industry:nth-child(3) {
  background:
    linear-gradient(145deg, rgba(8, 127, 120, 0.11), transparent 60%),
    var(--surface);
}

.industry h3 {
  margin: 54px 0 10px;
  font-size: 23px;
}

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

.page-hero {
  padding: 88px 0 72px;
}

.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(440px, 0.8fr);
  align-items: end;
  gap: 70px;
}

.page-hero h1 {
  font-size: clamp(48px, 6.3vw, 88px);
}

.page-hero-aside {
  border-left: 1px solid var(--line-strong);
  padding: 8px 0 8px 28px;
}

.page-hero-aside dl {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin: 0;
}

.page-hero-aside dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.page-hero-aside dd {
  margin: 5px 0 0;
  font-weight: 700;
}

.page-media {
  padding-bottom: 80px;
}

.page-media img {
  width: 100%;
  max-height: 720px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: var(--shadow);
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(220px, 0.34fr) minmax(0, 1fr);
  gap: 70px;
}

.content-nav {
  align-self: start;
  position: sticky;
  top: 120px;
}

.content-nav strong {
  display: block;
  margin-bottom: 16px;
}

.content-nav a {
  display: block;
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 10px 0;
  font-size: 14px;
}

.content {
  max-width: 900px;
}

.content section {
  scroll-margin-top: 110px;
  margin-bottom: 84px;
}

.content h2 {
  font-size: clamp(31px, 3.6vw, 48px);
}

.content h3 {
  margin: 34px 0 12px;
  font-size: 23px;
}

.content p,
.content li {
  color: #4f6064;
}

.content ul {
  padding-left: 22px;
}

.spec-table {
  width: 100%;
  margin-top: 28px;
  border-collapse: collapse;
  background: var(--surface);
}

.spec-table th,
.spec-table td {
  border-bottom: 1px solid var(--line);
  padding: 18px 16px;
  text-align: left;
  vertical-align: top;
}

.spec-table th {
  width: 32%;
  color: var(--ink);
  font-size: 14px;
}

.spec-table td {
  color: var(--muted);
}

.faq {
  max-width: 980px;
}

.faq details {
  border-top: 1px solid var(--line);
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding: 24px 48px 24px 0;
  font-size: 19px;
  font-weight: 700;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  position: absolute;
  top: 21px;
  right: 4px;
  color: var(--accent);
  content: "+";
  font-size: 26px;
}

.faq details[open] summary::after {
  content: "−";
}

.faq details p {
  max-width: 820px;
  margin: -6px 0 26px;
  color: var(--muted);
}

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

.article-card {
  display: flex;
  min-height: 310px;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 28px;
}

.article-card:hover {
  border-color: var(--accent);
}

.article-card small {
  color: var(--accent-dark);
  font-weight: 800;
}

.article-card h3 {
  margin: 56px 0 14px;
  font-size: 25px;
  letter-spacing: -0.025em;
}

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

.article-card span {
  margin-top: auto;
  padding-top: 30px;
  font-weight: 750;
}

.article-body {
  display: grid;
  grid-template-columns: minmax(190px, 0.28fr) minmax(0, 760px);
  justify-content: center;
  gap: 70px;
}

.article-meta {
  align-self: start;
  position: sticky;
  top: 120px;
  color: var(--muted);
  font-size: 14px;
}

.prose {
  font-size: 17px;
}

.prose h2 {
  margin: 64px 0 18px;
  font-size: 34px;
  letter-spacing: -0.03em;
  line-height: 1.18;
}

.prose h3 {
  margin: 38px 0 12px;
  font-size: 23px;
}

.prose p,
.prose li {
  color: #46585c;
}

.prose a {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.7fr);
  gap: 80px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: clamp(32px, 6vw, 74px);
}

.contact-panel h2 {
  max-width: 740px;
  margin: 0;
  font-size: clamp(37px, 5vw, 66px);
  letter-spacing: -0.05em;
  line-height: 1.05;
}

.contact-panel p {
  max-width: 700px;
  color: var(--muted);
}

.contact-methods {
  display: grid;
  align-content: center;
}

.contact-method {
  border-top: 1px solid var(--line);
  padding: 22px 0;
}

.contact-method:last-child {
  border-bottom: 1px solid var(--line);
}

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

.contact-method small {
  color: var(--muted);
}

.contact-method strong {
  margin-top: 5px;
  font-size: clamp(19px, 2vw, 26px);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 70px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) repeat(3, minmax(150px, 0.45fr));
  gap: 50px;
}

.footer-brand .brand {
  width: max-content;
}

.footer-brand p {
  max-width: 420px;
  margin: 20px 0 0;
  color: var(--muted);
}

.footer-col h2 {
  margin: 0 0 16px;
  font-size: 14px;
}

.footer-col a {
  display: block;
  margin-top: 9px;
  color: var(--muted);
  font-size: 14px;
}

.footer-col a:hover {
  color: var(--accent-dark);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  border-top: 1px solid var(--line);
  margin-top: 52px;
  padding-top: 24px;
  color: var(--muted);
  font-size: 13px;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 620ms ease, transform 620ms cubic-bezier(0.2, 0.72, 0, 1);
}

.js [data-reveal][data-visible="true"] {
  opacity: 1;
  transform: none;
}

@media (max-width: 1080px) {
  .nav-shell {
    grid-template-columns: auto 1fr auto;
  }

  .main-nav {
    position: fixed;
    inset: 77px 0 auto;
    display: none;
    min-height: calc(100dvh - 77px);
    align-content: start;
    justify-content: start;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
    padding: 30px 24px;
  }

  .main-nav[data-open="true"] {
    display: grid;
  }

  .main-nav a {
    border-bottom: 1px solid var(--line);
    padding: 15px 0;
    font-size: 18px;
  }

  .menu-button {
    display: inline-flex;
  }

  .nav-actions .button {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-copy {
    max-width: 840px;
  }

  .hero h1 {
    max-width: 820px;
  }

  .hero-visual {
    max-width: 960px;
  }

  .page-hero-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }

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

  .footer-grid {
    grid-template-columns: 1.5fr repeat(3, 1fr);
  }
}

@media (max-width: 760px) {
  .container {
    width: min(calc(100% - 32px), var(--container));
  }

  .nav-shell {
    min-height: 68px;
    gap: 10px;
  }

  .brand {
    min-width: 170px;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .brand strong {
    font-size: 16px;
  }

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

  .main-nav {
    inset: 69px 0 auto;
  }

  .hero {
    padding: 46px 0 62px;
  }

  .hero-grid {
    gap: 44px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: clamp(41px, 13vw, 60px);
  }

  .hero-lead,
  .page-lead {
    font-size: 17px;
  }

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

  .hero-proof {
    grid-template-columns: 1fr;
  }

  .hero-proof li,
  .hero-proof li:first-child {
    border-top: 1px solid var(--line);
    border-left: 0;
    padding: 14px 0;
  }

  .answer-strip .container {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .section {
    padding: 76px 0;
  }

  .section-header {
    margin-bottom: 36px;
  }

  .service-index,
  .feature-split,
  .feature-split.reverse,
  .content-grid,
  .contact-panel,
  .article-body {
    grid-template-columns: 1fr;
    gap: 38px;
  }

  .service-index-intro,
  .content-nav,
  .article-meta {
    position: static;
  }

  .feature-split.reverse .feature-media {
    order: 0;
  }

  .service-row {
    grid-template-columns: 38px 1fr;
  }

  .service-row span {
    grid-column: 2;
  }

  .process,
  .industries,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .process article {
    min-height: 220px;
  }

  .page-hero {
    padding: 58px 0 48px;
  }

  .page-hero-aside dl {
    grid-template-columns: 1fr;
  }

  .page-media {
    padding-bottom: 50px;
  }

  .spec-table,
  .spec-table tbody,
  .spec-table tr,
  .spec-table th,
  .spec-table td {
    display: block;
    width: 100%;
  }

  .spec-table th {
    border-bottom: 0;
    padding-bottom: 4px;
  }

  .spec-table td {
    padding-top: 0;
  }

  .contact-panel {
    padding: 28px 22px;
  }

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

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

  .footer-bottom {
    display: grid;
  }
}

@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;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-contrast: more) {
  :root {
    --muted: #39484b;
    --line: #aab8ba;
    --accent: #006b65;
  }
}