:root {
  --lab-blue: #1f5f8b;
  --lab-blue-dark: #173e5c;
  --slate: #51616f;
  --slate-deep: #243241;
  --panel: #eef0f2;
  --paper: #ffffff;
  --ink: #1d2730;
  --muted: #687783;
  --gold: #c28a1d;
  --line: #d7dde3;
  --footer: #16222e;
  --wrap: min(1120px, calc(100vw - 40px));
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
}

body {
  margin: 0;
  color: var(--ink);
  background: #f4f5f6;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
}

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

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

h1,
h2,
h3 {
  margin: 0;
  font-family: Georgia, "Times New Roman", "SimSun", serif;
  font-weight: 500;
  line-height: 1.14;
  letter-spacing: 0;
}

p {
  margin: 0;
}

.utility-strip {
  background: var(--lab-blue);
  color: #fff;
  font-size: 14px;
}

.utility-inner {
  width: var(--wrap);
  min-height: 34px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.utility-inner a,
.utility-inner span {
  overflow-wrap: anywhere;
}

.nav-shell {
  width: var(--wrap);
  margin: 0 auto;
  min-height: 82px;
  display: grid;
  grid-template-columns: minmax(220px, 310px) 1fr auto;
  align-items: center;
  gap: 28px;
  position: relative;
}

.nav-shell::before {
  content: "";
  position: absolute;
  left: -2px;
  bottom: 0;
  width: min(310px, 38vw);
  height: 5px;
  background: var(--gold);
  z-index: 0;
}

.site-header {
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 10;
}

.brand,
.footer-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: Georgia, "Times New Roman", "SimSun", serif;
  color: var(--slate-deep);
  font-size: 22px;
  line-height: 1.1;
}

.brand,
.desktop-nav,
.header-actions {
  position: relative;
  z-index: 1;
}

.brand img,
.footer-brand img {
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
}

.desktop-nav {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 22px;
  color: #40505d;
  font-size: 15px;
}

.desktop-nav a {
  padding: 28px 0;
  border-bottom: 3px solid transparent;
}

.desktop-nav a[aria-current="page"],
.desktop-nav a:hover {
  color: var(--lab-blue);
  border-bottom-color: var(--gold);
}

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

.header-cta,
.mobile-cta,
.cta-primary,
.quote-tab,
.quote-panel a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 18px;
  background: var(--gold);
  color: #fff;
  font-weight: 700;
}

.mobile-menu {
  display: none;
  position: relative;
}

.mobile-menu summary {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  list-style: none;
  cursor: pointer;
}

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

.mobile-menu summary span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--slate-deep);
  margin: 3px 0;
}

.mobile-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 12px);
  width: min(330px, calc(100vw - 40px));
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px rgba(22, 34, 46, 0.18);
  display: grid;
  gap: 10px;
}

.mobile-panel a {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
}

.mobile-brand {
  font-weight: 700;
  color: var(--lab-blue-dark);
  padding: 0 10px 6px;
}

.lab-hero {
  position: relative;
  min-height: 600px;
  background: #1b2732;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
}

.hero-image,
.inner-hero > img,
.article-hero > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
}

.hero-media::after,
.inner-hero::after,
.article-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(19, 31, 42, 0.75), rgba(19, 31, 42, 0.25) 45%, rgba(19, 31, 42, 0.05));
}

.hero-copy {
  position: relative;
  width: var(--wrap);
  min-height: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #fff;
  padding: 72px 0 120px;
}

.hero-copy span,
.section-head span,
.band-intro span,
.what-copy span,
.service-intro span,
.story-copy span,
.resource-aside span,
.quote-panel span,
.training-band span,
.inner-hero span,
.article-quote span {
  color: var(--gold);
  font-size: 14px;
  font-weight: 700;
}

.hero-copy h1 {
  max-width: 620px;
  margin-top: 12px;
  font-size: 54px;
}

.hero-copy p {
  max-width: 620px;
  margin-top: 22px;
  font-size: 18px;
}

.what-panel {
  width: var(--wrap);
  margin: -84px auto 0;
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: stretch;
  background: var(--panel);
  border-top: 6px solid var(--lab-blue);
}

.what-copy {
  padding: 44px 54px;
}

.what-copy h2,
.section-head h2,
.service-intro h2,
.story-copy h2,
.assurance-section h2,
.resource-aside h2 {
  margin-top: 10px;
  color: var(--slate);
  font-size: 34px;
}

.what-copy p,
.section-head p,
.service-intro p,
.story-copy p,
.resource-aside p,
.quote-panel p,
.training-band p {
  margin-top: 18px;
  color: #50606d;
}

.quote-tab {
  min-width: 164px;
  align-self: center;
  margin-right: -24px;
}

.facility-row {
  width: var(--wrap);
  margin: 58px auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.facility-row article,
.article-card,
.service-card,
.contact-card,
.quote-panel {
  background: #fff;
  border: 1px solid var(--line);
}

.facility-row img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: grayscale(0.28);
}

.facility-row div {
  padding: 24px;
}

.facility-row h2,
.service-card h2,
.article-card h2,
.contact-service-context h2 {
  color: var(--slate-deep);
  font-size: 23px;
}

.facility-row p,
.service-card p,
.article-card p,
.contact-service-context p {
  margin-top: 12px;
  color: #586875;
}

.service-band {
  position: relative;
  margin: 0 auto;
  padding: 78px max(20px, calc((100vw - 1120px) / 2)) 86px;
  display: grid;
  grid-template-columns: minmax(260px, 360px) 1fr;
  gap: 42px;
  background: var(--slate);
  color: #fff;
}

.service-band::before {
  content: "";
  position: absolute;
  top: 0;
  left: max(20px, calc((100vw - 1120px) / 2));
  width: 82px;
  height: 34px;
  background: var(--gold);
  clip-path: polygon(0 0, 100% 0, 62% 100%, 0 100%);
}

.band-intro h2,
.band-intro p {
  color: #fff;
}

.band-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, 0.18);
}

.band-list article {
  padding: 26px;
  background: rgba(33, 47, 61, 0.58);
}

.band-list h3 {
  font-size: 22px;
  color: #fff;
}

.band-list p {
  color: #e4e9ee;
}

.resource-section,
.service-intro,
.story-split,
.assurance-section,
.resource-layout,
.contact-grid,
.contact-service-context,
.sitemap-grid,
.policy-wrap {
  width: var(--wrap);
  margin: 72px auto;
}

.section-head {
  max-width: 660px;
  margin-bottom: 32px;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

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

.article-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.article-body {
  padding: 24px;
}

.article-card {
  min-width: 0;
}

.article-body time {
  color: var(--gold);
  font-size: 14px;
  font-weight: 700;
}

.article-body h2 {
  margin-top: 10px;
  overflow-wrap: anywhere;
}

.read-tab {
  display: inline-block;
  margin-top: 18px;
  padding: 8px 14px;
  border-left: 4px solid var(--gold);
  color: var(--lab-blue-dark);
  font-weight: 700;
}

.training-band {
  margin: 80px 0 0;
  padding: 54px max(20px, calc((100vw - 1120px) / 2));
  background: var(--lab-blue);
  color: #fff;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 30px;
  align-items: center;
}

.training-band h2 {
  margin-top: 8px;
  font-size: 34px;
  color: #fff;
}

.training-band p {
  color: #edf5fb;
}

.training-band nav,
.story-copy nav,
.plain-hero nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cta-secondary,
.story-copy nav a,
.plain-hero nav a {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  border: 1px solid currentColor;
  color: #fff;
  font-weight: 700;
}

.story-copy nav a,
.plain-hero nav a {
  color: var(--lab-blue-dark);
}

.inner-hero,
.article-hero {
  position: relative;
  min-height: 350px;
  overflow: hidden;
  background: #1e2b37;
}

.inner-hero > img,
.article-hero > img {
  position: absolute;
  inset: 0;
}

.inner-hero > div,
.article-hero > div {
  position: relative;
  z-index: 1;
  width: var(--wrap);
  min-height: 350px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #fff;
  padding: 58px 0;
}

.inner-hero h1,
.article-hero h1 {
  margin-top: 10px;
  max-width: 760px;
  font-size: 46px;
}

.inner-hero p,
.article-hero p {
  max-width: 700px;
  margin-top: 16px;
  color: #edf3f8;
}

.breadcrumbs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.82);
}

.breadcrumbs a + a::before {
  content: "/";
  margin-right: 10px;
  color: rgba(255, 255, 255, 0.56);
}

.service-intro {
  max-width: 780px;
}

.service-briefs {
  width: var(--wrap);
  margin: -30px auto 44px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  background: #fff;
}

.service-briefs article {
  min-height: 150px;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.service-briefs article:last-child {
  border-right: 0;
}

.service-briefs span {
  display: block;
  width: 40px;
  height: 4px;
  margin-bottom: 18px;
  background: var(--gold);
}

.service-briefs p {
  color: #4f5f6c;
  font-weight: 700;
}

.service-catalog {
  width: var(--wrap);
  margin: 34px auto 96px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.service-card {
  min-height: 224px;
  padding: 30px;
  position: relative;
  background: #fff;
  border-color: #dce3e9;
  box-shadow: 0 12px 26px rgba(31, 48, 64, 0.04);
}

.service-card:nth-child(even) {
  background: #f7fafc;
}

.service-card:nth-child(3n) {
  background: #f4f7f9;
}

.service-card:nth-child(4n) {
  background: #fbfaf6;
}

.service-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: rgba(31, 95, 139, 0.16);
}

.service-card:nth-child(4n)::before,
.service-card:nth-child(4n + 1)::before {
  background: rgba(194, 138, 29, 0.22);
}

.service-rule {
  display: block;
  width: 58px;
  height: 4px;
  margin-bottom: 24px;
  background: var(--gold);
}

.story-split {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 46px;
  align-items: center;
}

.story-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.story-copy {
  padding: 28px 0;
}

.story-copy nav {
  margin-top: 24px;
}

.assurance-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  counter-reset: assurance-step;
}

.assurance-list article {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 18px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  counter-increment: assurance-step;
}

.assurance-list article:nth-child(odd) {
  padding-right: 26px;
}

.assurance-list article:nth-child(even) {
  padding-left: 26px;
}

.assurance-list span {
  width: 46px;
  height: 46px;
  border: 6px solid var(--lab-blue);
  border-top-color: var(--gold);
  align-self: start;
  display: grid;
  place-items: center;
  color: var(--lab-blue-dark);
  font-size: 13px;
  font-weight: 700;
}

.assurance-list span::after {
  content: counter(assurance-step, decimal-leading-zero);
}

.assurance-list h3 {
  color: var(--slate-deep);
  font-family: Arial, "Microsoft YaHei", sans-serif;
  font-size: 18px;
  font-weight: 700;
}

.assurance-list p {
  margin-top: 0;
  color: #556573;
  font-weight: 700;
}

.resource-layout {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.resource-aside {
  background: var(--panel);
  border-top: 6px solid var(--gold);
  padding: 28px;
  position: sticky;
  top: 18px;
}

.resource-aside a {
  display: inline-flex;
  margin-top: 20px;
  color: var(--lab-blue-dark);
  font-weight: 700;
}

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

.resource-grid .article-card:first-child {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(250px, 0.92fr) 1fr;
}

.resource-grid .article-card:first-child .article-media img {
  height: 100%;
  aspect-ratio: auto;
}

.resource-grid .article-card:first-child .article-body {
  padding: 30px;
}

.resource-grid .article-card:first-child h2 {
  font-size: 28px;
}

.article-shell {
  width: var(--wrap);
  margin: 58px auto 86px;
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr) 260px;
  gap: 34px;
  align-items: start;
}

.article-index,
.article-quote,
.article-aux-block {
  background: #fff;
  border: 1px solid var(--line);
  padding: 22px;
}

.article-index {
  position: sticky;
  top: 18px;
}

.article-index h2,
.article-quote h2,
.article-aux-block h2 {
  font-size: 21px;
  color: var(--slate-deep);
}

.article-index a {
  display: block;
  margin-top: 14px;
  color: var(--lab-blue-dark);
  border-left: 3px solid var(--gold);
  padding-left: 10px;
}

.article-content {
  background: #fff;
  padding: 36px;
  border: 1px solid var(--line);
}

.article-content section + section {
  margin-top: 34px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.article-content h2 {
  color: var(--slate-deep);
  font-size: 28px;
}

.article-content p {
  margin-top: 16px;
  color: #3f4d58;
}

.article-quote p {
  margin-top: 12px;
  color: #5c6b77;
}

.article-quote a {
  display: inline-flex;
  margin-top: 16px;
  background: var(--gold);
  color: #fff;
  padding: 10px 16px;
  font-weight: 700;
}

.article-aux {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

.article-aux-block div {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.article-aux-block a {
  display: block;
  padding: 12px 14px;
  background: #eef3f7;
  border-left: 4px solid var(--lab-blue);
  color: var(--lab-blue-dark);
  font-weight: 700;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 28px;
}

.contact-card,
.quote-panel {
  padding: 34px;
}

.contact-card h2,
.quote-panel h2 {
  margin-top: 8px;
  color: var(--slate-deep);
  font-size: 32px;
}

.contact-card dl {
  margin: 26px 0 0;
  display: grid;
  gap: 14px;
}

.contact-card div {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.contact-card dt {
  color: var(--muted);
  font-weight: 700;
}

.contact-card dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.quote-panel {
  background: var(--slate-deep);
  color: #fff;
  border-color: var(--slate-deep);
}

.quote-panel h2 {
  color: #fff;
}

.quote-panel p {
  color: #dfe8ef;
}

.contact-service-context {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: #fff;
  border: 1px solid var(--line);
}

.contact-service-context article {
  background: #fff;
  padding: 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.plain-hero {
  width: var(--wrap);
  margin: 72px auto 36px;
  padding: 44px;
  background: #fff;
  border-top: 6px solid var(--lab-blue);
}

.policy-hero {
  min-height: 300px;
}

.policy-hero > div {
  min-height: 300px;
}

.plain-hero h1 {
  color: var(--slate-deep);
  font-size: 42px;
}

.plain-hero p {
  margin-top: 14px;
  color: #53616c;
}

.not-found nav {
  margin-top: 24px;
}

.sitemap-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}

.sitemap-grid div {
  display: grid;
  gap: 12px;
  padding: 28px;
  background: #fff;
  border: 1px solid var(--line);
}

.sitemap-grid h2 {
  color: var(--slate-deep);
  font-size: 28px;
}

.sitemap-grid a {
  color: var(--lab-blue-dark);
  border-bottom: 1px solid var(--line);
  padding-bottom: 8px;
}

.policy-wrap {
  display: grid;
  gap: 18px;
}

.policy-panel {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 24px;
  background: #fff;
  border: 1px solid var(--line);
  padding: 28px;
}

.policy-panel span {
  color: var(--gold);
  font-size: 26px;
  font-weight: 700;
}

.policy-panel h2 {
  color: var(--slate-deep);
  font-size: 26px;
}

.policy-panel p {
  grid-column: 2;
  color: #4e5c67;
}

.policy-panel p + p {
  margin-top: -8px;
}

.site-footer {
  margin-top: 0;
  background: var(--footer);
  color: #dce4eb;
}

.footer-inner {
  width: var(--wrap);
  margin: 0 auto;
  padding: 54px 0 38px;
  display: grid;
  grid-template-columns: minmax(260px, 380px) 1fr;
  gap: 56px;
}

.footer-mark {
  color: #fff;
}

.footer-brand p {
  margin-top: 18px;
  color: #b6c2cc;
}

.footer-directory {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.footer-directory div {
  display: grid;
  gap: 10px;
  align-content: start;
}

.footer-directory h2 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 6px;
}

.footer-directory a {
  color: #dce4eb;
  overflow-wrap: anywhere;
}

.footer-legal {
  width: var(--wrap);
  margin: 0 auto;
  padding: 18px 0 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  color: #aebbc7;
  font-size: 14px;
}

@media (max-width: 980px) {
  .nav-shell {
    grid-template-columns: 1fr auto;
  }

  .desktop-nav,
  .header-cta {
    display: none;
  }

  .mobile-menu {
    display: block;
  }

  .facility-row,
  .article-grid,
  .article-grid.compact,
  .service-catalog,
  .service-briefs,
  .story-split,
  .resource-layout,
  .contact-grid,
  .sitemap-grid,
  .footer-inner,
  .service-band,
  .article-shell {
    grid-template-columns: 1fr;
  }

  .resource-aside,
  .article-index {
    position: static;
  }

  .resource-grid .article-card:first-child {
    grid-template-columns: 1fr;
  }

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

  .training-band {
    grid-template-columns: 1fr;
  }

  .quote-tab {
    margin-right: 24px;
  }
}

@media (max-width: 640px) {
  :root {
    --wrap: min(100vw - 28px, 1120px);
  }

  body {
    font-size: 15px;
  }

  .utility-strip {
    display: none;
  }

  .nav-shell {
    min-height: 74px;
    gap: 12px;
  }

  .nav-shell::before {
    width: 220px;
    left: 0;
    height: 5px;
  }

  .brand {
    font-size: 18px;
  }

  .brand img,
  .footer-brand img {
    width: 42px;
    height: 42px;
    flex-basis: 42px;
  }

  .lab-hero,
  .hero-copy {
    min-height: 520px;
  }

  .hero-copy h1 {
    font-size: 34px;
  }

  .hero-copy p {
    font-size: 16px;
  }

  .what-panel {
    margin-top: -48px;
    grid-template-columns: 1fr;
  }

  .what-copy,
  .contact-card,
  .quote-panel,
  .article-content,
  .plain-hero {
    padding: 26px;
  }

  .what-copy h2,
  .section-head h2,
  .service-intro h2,
  .story-copy h2,
  .assurance-section h2,
  .resource-aside h2,
  .training-band h2,
  .contact-card h2,
  .quote-panel h2 {
    font-size: 28px;
  }

  .facility-row,
  .resource-section,
  .service-intro,
  .service-briefs,
  .story-split,
  .assurance-section,
  .resource-layout,
  .contact-grid,
  .contact-service-context,
  .sitemap-grid,
  .policy-wrap {
    margin-top: 46px;
    margin-bottom: 46px;
  }

  .band-list,
  .assurance-list,
  .contact-service-context,
  .service-briefs,
  .footer-directory {
    grid-template-columns: 1fr;
  }

  .service-briefs {
    margin-top: -18px;
  }

  .service-briefs article {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .assurance-list article:nth-child(odd),
  .assurance-list article:nth-child(even) {
    padding-left: 0;
    padding-right: 0;
  }

  .inner-hero,
  .inner-hero > div,
  .article-hero,
  .article-hero > div {
    min-height: 320px;
  }

  .inner-hero h1,
  .article-hero h1,
  .plain-hero h1 {
    font-size: 34px;
  }

  .policy-panel {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 22px;
  }

  .policy-panel p {
    grid-column: auto;
  }

  .contact-card div {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}