:root {
  color-scheme: light;
  --ink: #0b1620;
  --ink-soft: #2d3f4e;
  --steel: #60717e;
  --line: #d9e3e6;
  --paper: #f7faf9;
  --white: #ffffff;
  --mint: #77c545;
  --mint-dark: #2f7f45;
  --cyan: #2d9ec4;
  --amber: #f0a536;
  --shadow: 0 22px 54px rgba(11, 22, 32, 0.12);
  --radius: 8px;
  --shell: min(1180px, calc(100vw - 40px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial,
    sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  letter-spacing: 0;
}

body.nav-open {
  overflow: hidden;
}

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

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

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

p {
  margin-bottom: 0;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1240px, calc(100vw - 28px));
  margin: 14px auto 0;
  padding: 12px 14px 12px 18px;
  color: var(--white);
  background: rgba(8, 17, 24, 0.46);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius);
  backdrop-filter: blur(18px);
  transition:
    background 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(11, 22, 32, 0.12);
  box-shadow: 0 14px 40px rgba(11, 22, 32, 0.12);
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  flex: 0 0 auto;
}

.brand-logo {
  width: 156px;
  height: auto;
  background: transparent;
}

.brand-logo-light {
  display: none;
}

.site-header.is-scrolled .brand-logo-dark {
  display: none;
}

.site-header.is-scrolled .brand-logo-light {
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 14px;
  font-weight: 700;
}

.site-nav a {
  min-height: 38px;
  padding: 8px 12px;
  border-radius: 6px;
  color: currentColor;
  opacity: 0.88;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  opacity: 1;
  background: rgba(255, 255, 255, 0.16);
  outline: none;
}

.site-header.is-scrolled .site-nav a:hover,
.site-header.is-scrolled .site-nav a:focus-visible {
  background: rgba(45, 158, 196, 0.1);
}

.site-nav .nav-cta {
  color: #061017;
  background: var(--mint);
  opacity: 1;
}

.site-nav .nav-cta:hover,
.site-nav .nav-cta:focus-visible {
  background: #8bd655;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.14);
  color: currentColor;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
  transition:
    transform 160ms ease,
    opacity 160ms ease;
}

.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 72vh;
  overflow: hidden;
  isolation: isolate;
  color: var(--white);
  background: #081118;
}

.hero picture,
.hero picture img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero picture img {
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(4, 13, 20, 0.9) 0%, rgba(4, 13, 20, 0.66) 44%, rgba(4, 13, 20, 0.16) 100%),
    linear-gradient(0deg, rgba(4, 13, 20, 0.68) 0%, rgba(4, 13, 20, 0) 35%);
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: var(--shell);
  min-height: 72vh;
  margin: 0 auto;
  padding: 108px 0 72px;
}

.eyebrow,
.section-kicker {
  color: var(--mint);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 880px;
  margin-bottom: 18px;
  font-size: clamp(38px, 5.4vw, 64px);
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 710px;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(16px, 1.55vw, 20px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 6px;
  font-weight: 800;
}

.primary-link {
  color: #061017;
  background: var(--mint);
}

.secondary-link {
  border: 1px solid rgba(255, 255, 255, 0.36);
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.section-shell {
  width: var(--shell);
  margin: 0 auto;
}

.intro-band {
  padding: 76px 0;
  background: var(--white);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(320px, 1.25fr);
  gap: 58px;
  align-items: start;
}

.intro-grid h2,
.section-heading h2,
.technology-content h2,
.service-section h2,
.contact-layout h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.12;
  letter-spacing: 0;
}

.intro-copy {
  display: grid;
  gap: 18px;
  color: var(--ink-soft);
  font-size: 17px;
}

.capability-section {
  padding: 34px 0 76px;
}

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

.capability-grid article {
  min-height: 224px;
  padding: 24px;
  background: var(--white);
}

.capability-grid span {
  display: block;
  margin-bottom: 12px;
  color: var(--mint-dark);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.capability-grid h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.22;
}

.capability-grid p {
  color: var(--ink-soft);
  font-size: 15px;
}

.metrics {
  padding: 28px 0;
  background: #101b23;
  color: var(--white);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.metrics-grid div {
  min-height: 126px;
  padding: 24px;
  background: #101b23;
}

.metrics-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--mint);
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1;
}

.metrics-grid span {
  display: block;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.product-center-section {
  padding: 82px 0 96px;
  background: var(--paper);
}

.product-center-heading {
  max-width: 880px;
}

.product-family-nav {
  position: sticky;
  top: 86px;
  z-index: 12;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
  padding: 10px;
  border: 1px solid rgba(11, 22, 32, 0.08);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 16px 38px rgba(11, 22, 32, 0.08);
  backdrop-filter: blur(16px);
}

.product-family-nav a {
  min-height: 38px;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 800;
}

.product-family-nav a:hover,
.product-family-nav a:focus-visible {
  color: #061017;
  background: var(--mint);
  outline: none;
}

.product-family {
  display: grid;
  grid-template-columns: minmax(360px, 0.84fr) minmax(420px, 1.16fr);
  gap: 34px;
  padding: 44px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 118px;
}

.product-family:first-of-type {
  border-top: 0;
}

.family-content {
  align-self: center;
}

.family-content > span {
  display: block;
  margin-bottom: 12px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 850;
}

.family-content h3 {
  margin-bottom: 14px;
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.12;
  letter-spacing: 0;
}

.family-content > p {
  color: var(--ink-soft);
  font-size: 17px;
}

.family-highlights {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 24px;
  background: var(--line);
  border: 1px solid var(--line);
}

.family-highlights div {
  min-height: 136px;
  padding: 18px;
  background: var(--white);
}

.family-highlights b {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 16px;
}

.family-highlights p {
  color: var(--ink-soft);
  font-size: 14px;
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  margin-top: 22px;
  padding: 10px 14px;
  border-radius: 6px;
  color: #061017;
  background: var(--mint);
  font-weight: 850;
}

.text-link::after {
  content: " →";
  margin-left: 4px;
}

.family-media {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  align-content: start;
}

.family-media img {
  width: 100%;
  height: 100%;
  min-height: 142px;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #f6faf9 0%, #edf4f2 100%);
  box-shadow: 0 12px 28px rgba(11, 22, 32, 0.06);
}

.family-media img:first-child {
  grid-column: 1 / -1;
  min-height: 292px;
  aspect-ratio: 16 / 8;
  padding: 18px;
  background: linear-gradient(180deg, #ffffff 0%, #edf5f3 100%);
}

.product-section,
.advanced-section,
.systems-section,
.service-section {
  padding: 92px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-heading p:last-child,
.service-section > div:first-child > p,
.contact-layout > div > p {
  color: var(--ink-soft);
  font-size: 17px;
}

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

.product-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 16px 36px rgba(11, 22, 32, 0.08);
}

.product-card img {
  aspect-ratio: 4 / 3;
  object-fit: contain;
  padding: 16px;
  background: #f2f7f6;
}

.featured-card {
  grid-column: span 2;
}

.featured-card img {
  aspect-ratio: 16 / 9;
  padding: 18px;
}

.product-body {
  padding: 22px;
}

.product-body span {
  display: block;
  margin-bottom: 9px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
}

.product-body h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.24;
}

.product-body p {
  color: var(--ink-soft);
}

.product-body ul {
  display: grid;
  gap: 8px;
  margin: 18px 0 0;
  padding: 0;
  color: var(--ink-soft);
  list-style: none;
}

.product-body li {
  position: relative;
  padding-left: 18px;
}

.product-body li::before {
  position: absolute;
  top: 0.72em;
  left: 0;
  width: 8px;
  height: 2px;
  content: "";
  background: var(--amber);
}

.catalog-panel {
  margin-top: 42px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 18px 42px rgba(11, 22, 32, 0.08);
}

.catalog-heading {
  display: grid;
  grid-template-columns: minmax(220px, 0.62fr) minmax(320px, 1.38fr);
  gap: 28px;
  margin-bottom: 24px;
  align-items: end;
}

.catalog-heading h3 {
  margin-bottom: 0;
  font-size: clamp(26px, 3vw, 36px);
  line-height: 1.18;
}

.catalog-heading p:last-child {
  color: var(--ink-soft);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.catalog-grid article {
  min-height: 196px;
  padding: 22px;
  background: #fbfdfc;
}

.catalog-grid span,
.advanced-card span,
.accessory-feature span {
  display: block;
  margin-bottom: 9px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
}

.catalog-grid h4 {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.24;
}

.catalog-grid p {
  color: var(--ink-soft);
  font-size: 15px;
}

.detail-panel {
  margin-top: 42px;
}

.detail-panel .section-heading h3 {
  margin-bottom: 12px;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.18;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.detail-grid article {
  min-height: 280px;
  padding: 24px;
  background: var(--white);
}

.detail-grid h4 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.25;
}

.detail-grid p,
.detail-grid li {
  color: var(--ink-soft);
  font-size: 15px;
}

.detail-grid ul {
  display: grid;
  gap: 7px;
  margin: 16px 0 0;
  padding-left: 18px;
}

.technology-band {
  padding: 96px 0;
  color: var(--white);
  background: #101b23;
}

.technology-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.9fr) minmax(340px, 1.1fr);
  gap: 54px;
  align-items: center;
}

.technology-media {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.technology-media img {
  aspect-ratio: 5 / 4;
  object-fit: cover;
}

.technology-content p {
  color: rgba(255, 255, 255, 0.76);
}

.capability-list {
  display: grid;
  gap: 1px;
  margin-top: 30px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.capability-list div {
  padding: 22px;
  background: #101b23;
}

.capability-list h3 {
  margin-bottom: 6px;
  color: var(--white);
  font-size: 18px;
}

.advanced-section {
  padding-bottom: 84px;
}

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

.advanced-card {
  display: grid;
  grid-template-columns: minmax(170px, 0.44fr) minmax(260px, 0.56fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 16px 36px rgba(11, 22, 32, 0.08);
}

.advanced-card img {
  height: 100%;
  min-height: 300px;
  object-fit: contain;
  padding: 18px;
  background: #f2f7f6;
}

.advanced-card > div {
  padding: 24px;
}

.advanced-card h3 {
  margin-bottom: 10px;
  font-size: 22px;
  line-height: 1.22;
}

.advanced-card p,
.advanced-card li {
  color: var(--ink-soft);
}

.advanced-card ul {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
  padding-left: 18px;
}

.advanced-card dl {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 18px 0 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.advanced-card dl div {
  padding: 12px;
  background: #fbfdfc;
}

.advanced-card dt {
  color: var(--steel);
  font-size: 12px;
  font-weight: 800;
}

.advanced-card dd {
  margin: 4px 0 0;
  color: var(--ink);
  font-weight: 850;
}

.workflow-panel {
  display: grid;
  grid-template-columns: minmax(280px, 0.48fr) minmax(420px, 0.52fr);
  gap: 24px;
  margin-top: 24px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 16px 36px rgba(11, 22, 32, 0.08);
}

.workflow-panel h3 {
  margin-bottom: 12px;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.18;
}

.workflow-panel p {
  color: var(--ink-soft);
}

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.workflow-steps li {
  min-height: 96px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfdfc;
  color: var(--ink);
  font-weight: 850;
}

.workflow-steps span {
  display: block;
  margin-bottom: 10px;
  color: var(--cyan);
  font-size: 13px;
}

.feature-matrix {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  margin-top: 18px;
  background: var(--line);
  border: 1px solid var(--line);
}

.feature-matrix article {
  min-height: 214px;
  padding: 22px;
  background: var(--white);
}

.feature-matrix h3 {
  margin-bottom: 10px;
  font-size: 19px;
  line-height: 1.24;
}

.feature-matrix p {
  color: var(--ink-soft);
  font-size: 15px;
}

.systems-section {
  padding-bottom: 88px;
}

.compact-heading {
  margin-bottom: 26px;
}

.systems-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-bottom: 22px;
}

.systems-showcase article {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 14px 32px rgba(11, 22, 32, 0.07);
}

.systems-showcase img {
  aspect-ratio: 4 / 3;
  object-fit: contain;
  padding: 16px;
  background: #f2f7f6;
}

.systems-showcase h3 {
  margin: 20px 20px 8px;
  font-size: 20px;
  line-height: 1.25;
}

.systems-showcase p {
  margin: 0 20px 22px;
  color: var(--ink-soft);
  font-size: 15px;
}

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

.system-summary-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.system-summary-grid article {
  min-height: 210px;
  padding: 24px;
  background: var(--white);
}

.system-summary-grid span,
.tube-summary span {
  display: block;
  margin-bottom: 10px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 850;
}

.system-summary-grid h3,
.tube-summary h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.25;
}

.system-summary-grid p,
.tube-summary p {
  color: var(--ink-soft);
  font-size: 15px;
}

.spec-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 14px 32px rgba(11, 22, 32, 0.06);
}

.spec-card h3 {
  margin-bottom: 8px;
  font-size: 21px;
}

.spec-card p {
  margin-bottom: 16px;
  color: var(--ink-soft);
  font-size: 15px;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 6px;
}

table {
  width: 100%;
  min-width: 460px;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  white-space: nowrap;
}

th {
  color: var(--ink);
  background: #eef5f3;
  font-weight: 850;
}

td {
  color: var(--ink-soft);
}

tr:last-child td {
  border-bottom: 0;
}

.accessory-band {
  padding: 92px 0;
  background: var(--white);
}

.accessory-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.42fr) minmax(360px, 0.58fr);
  gap: 18px;
}

.accessory-feature {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdfc;
  box-shadow: 0 16px 36px rgba(11, 22, 32, 0.08);
}

.accessory-feature img {
  max-height: 340px;
  object-fit: contain;
  padding: 22px;
  background: #f2f7f6;
}

.accessory-feature > div {
  padding: 24px;
}

.accessory-feature h3,
.accessory-grid h3 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.25;
}

.accessory-feature p,
.accessory-grid p {
  color: var(--ink-soft);
  font-size: 15px;
}

.accessory-feature p + p {
  margin-top: 12px;
}

.accessory-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.accessory-grid article {
  min-height: 190px;
  padding: 22px;
  background: var(--white);
}

.tube-section {
  padding: 4px 0 92px;
}

.tube-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.38fr) minmax(480px, 0.62fr);
  gap: 18px;
}

.tube-intro {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 14px 32px rgba(11, 22, 32, 0.06);
}

.tube-intro img {
  max-height: 360px;
  object-fit: contain;
  padding: 22px;
  background: #f2f7f6;
}

.tube-intro ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 22px 22px 24px 40px;
  color: var(--ink-soft);
  font-size: 15px;
}

.tube-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.tube-summary article {
  padding: 24px;
  background: var(--white);
}

.visual-band {
  padding: 72px 0;
  color: var(--white);
  background: #101b23;
}

.visual-band .section-heading p:last-child {
  color: rgba(255, 255, 255, 0.72);
}

.visual-group + .visual-group {
  margin-top: 42px;
}

.visual-group h3 {
  margin-bottom: 18px;
  color: var(--white);
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.2;
}

.visual-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.visual-grid figure {
  position: relative;
  min-height: 240px;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  background: #eef5f3;
}

.visual-grid figure.wide {
  grid-column: span 2;
}

.visual-grid img {
  width: 100%;
  height: 100%;
  min-height: inherit;
  object-fit: contain;
  padding: 10px;
}

.visual-grid figcaption {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--white);
  background: rgba(8, 17, 24, 0.74);
  font-size: 13px;
  font-weight: 800;
  backdrop-filter: blur(10px);
}

.product-browse-band {
  background:
    radial-gradient(circle at 20% 12%, rgba(45, 158, 196, 0.18), transparent 30%),
    #101b23;
}

.product-page-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.product-page-card {
  display: grid;
  grid-template-columns: minmax(190px, 0.42fr) minmax(0, 0.58fr);
  min-height: 238px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 22px 54px rgba(0, 0, 0, 0.18);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.product-page-card:hover,
.product-page-card:focus-visible {
  border-color: rgba(119, 197, 69, 0.76);
  background: rgba(255, 255, 255, 0.12);
  outline: none;
  transform: translateY(-3px);
}

.product-card-media {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  grid-template-rows: repeat(2, minmax(0, 1fr));
  min-height: 238px;
  gap: 1px;
  background: rgba(255, 255, 255, 0.12);
}

.product-card-media img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: contain;
  padding: 10px;
  background: #eef5f3;
}

.product-card-media img:first-child {
  grid-row: span 2;
}

.product-page-card-body {
  display: flex;
  flex-direction: column;
  padding: 20px;
}

.product-page-card-body span {
  margin-bottom: 10px;
  color: var(--mint);
  font-size: 13px;
  font-weight: 850;
}

.product-page-card-body h3 {
  margin-bottom: 10px;
  color: var(--white);
  font-size: clamp(19px, 1.8vw, 24px);
  line-height: 1.2;
}

.product-page-card-body p {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.product-page-card-body b {
  margin-top: auto;
  padding-top: 14px;
  color: var(--white);
  font-size: 14px;
}

.product-page-card-body b::after {
  content: " →";
  color: var(--mint);
}

.product-detail-page {
  background: var(--paper);
}

.subpage-hero {
  position: relative;
  min-height: 68vh;
  overflow: hidden;
  color: var(--white);
  background: #081118;
  isolation: isolate;
}

.subpage-hero > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 118px 5vw 56px 48vw;
  object-fit: contain;
  object-position: right center;
  opacity: 0.58;
  background:
    linear-gradient(116deg, #071018 0%, #132832 54%, #eff6f4 100%);
}

.subpage-hero-content {
  min-height: 68vh;
  padding-bottom: 76px;
}

.subpage-hero h1 {
  max-width: 840px;
  margin-bottom: 18px;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.1;
  letter-spacing: 0;
}

.subpage-back {
  width: fit-content;
  margin-bottom: 22px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 13px;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.08);
}

.product-page-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.product-page-tabs a {
  min-height: 42px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink-soft);
  background: var(--white);
  font-size: 14px;
  font-weight: 800;
  box-shadow: 0 12px 28px rgba(11, 22, 32, 0.06);
}

.product-page-tabs a:hover,
.product-page-tabs a:focus-visible,
.product-page-tabs a[aria-current="page"] {
  color: #061017;
  background: var(--mint);
  border-color: var(--mint);
  outline: none;
}

.product-page-overview {
  display: grid;
  grid-template-columns: minmax(320px, 0.82fr) minmax(420px, 1.18fr);
  gap: 20px;
  padding: 68px 0 34px;
}

.product-brief,
.product-page-points article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 16px 36px rgba(11, 22, 32, 0.07);
}

.product-brief {
  padding: 28px;
}

.product-brief h2,
.product-section-copy h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.14;
}

.product-brief p:last-child,
.product-section-copy p:last-child {
  color: var(--ink-soft);
  font-size: 17px;
}

.product-page-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.product-page-points article {
  min-height: 210px;
  padding: 24px;
}

.product-page-points span {
  display: block;
  margin-bottom: 22px;
  color: var(--cyan);
  font-size: 30px;
  font-weight: 850;
  line-height: 1;
}

.product-page-points p {
  color: var(--ink-soft);
  font-weight: 700;
}

.product-section-block {
  padding: 54px 0;
  border-top: 1px solid var(--line);
}

.product-section-copy {
  max-width: 820px;
  margin-bottom: 24px;
}

.product-visual-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.product-visual-grid figure {
  position: relative;
  min-height: 0;
  aspect-ratio: 4 / 3;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #eef5f3;
  box-shadow: 0 14px 32px rgba(11, 22, 32, 0.06);
}

.product-visual-grid figure.wide {
  grid-column: span 2;
  aspect-ratio: 16 / 8;
}

.product-visual-grid img {
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: contain;
  padding: 12px;
}

.product-visual-grid figcaption {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--white);
  background: rgba(8, 17, 24, 0.74);
  font-size: 13px;
  font-weight: 800;
  backdrop-filter: blur(10px);
}

.product-pager {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 30px 0 92px;
}

.product-pager a {
  display: flex;
  min-height: 96px;
  flex-direction: column;
  justify-content: center;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  background: var(--white);
  font-weight: 850;
  box-shadow: 0 14px 32px rgba(11, 22, 32, 0.06);
}

.product-pager a:nth-child(2) {
  align-items: center;
  text-align: center;
  color: #061017;
  background: var(--mint);
  border-color: var(--mint);
}

.product-pager a:last-child {
  align-items: flex-end;
  text-align: right;
}

.product-pager span {
  margin-bottom: 6px;
  color: var(--steel);
  font-size: 13px;
}

.product-pager a:nth-child(2) span {
  color: #061017;
}

.case-band {
  padding: 92px 0;
  background: #eaf1ee;
}

.case-gallery {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
}

.case-gallery figure {
  position: relative;
  min-height: 280px;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: #cbd8d9;
  box-shadow: 0 18px 42px rgba(11, 22, 32, 0.1);
}

.case-gallery figure:first-child {
  grid-row: span 2;
  min-height: 578px;
}

.case-gallery img {
  width: 100%;
  height: 100%;
  min-height: inherit;
  object-fit: cover;
}

.case-gallery figcaption {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  padding: 10px 12px;
  border-left: 4px solid var(--mint);
  border-radius: 6px;
  color: var(--white);
  background: rgba(8, 17, 24, 0.78);
  backdrop-filter: blur(12px);
  font-weight: 800;
}

.case-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.case-list span {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 12px;
  border: 1px solid rgba(11, 22, 32, 0.12);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--ink-soft);
  font-size: 14px;
  font-weight: 750;
}

.service-section {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(340px, 1.28fr);
  gap: 50px;
  align-items: start;
}

.service-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.service-list article {
  min-height: 184px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 14px 32px rgba(11, 22, 32, 0.07);
}

.service-list h3 {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 20px;
}

.service-list p {
  color: var(--ink-soft);
}

.contact-band {
  padding: 78px 0;
  color: var(--white);
  background:
    linear-gradient(rgba(8, 17, 24, 0.86), rgba(8, 17, 24, 0.86)),
    url("./assets/contact-equipment.webp") center / cover;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(300px, 1fr) minmax(280px, 420px);
  gap: 34px;
  align-items: end;
}

.contact-layout > div > p {
  color: rgba(255, 255, 255, 0.74);
}

address {
  display: grid;
  gap: 12px;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  font-style: normal;
  backdrop-filter: blur(12px);
}

address span {
  color: rgba(255, 255, 255, 0.72);
}

address a {
  display: block;
  font-size: 28px;
  font-weight: 850;
  line-height: 1.1;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 22px calc((100vw - var(--shell)) / 2);
  color: rgba(255, 255, 255, 0.66);
  background: #081118;
  font-size: 14px;
}

.site-footer a {
  color: var(--white);
}

@media (max-width: 980px) {
  .site-header {
    width: min(720px, calc(100vw - 24px));
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: 74px;
    left: 12px;
    right: 12px;
    display: grid;
    gap: 6px;
    padding: 14px;
    border: 1px solid rgba(11, 22, 32, 0.12);
    border-radius: var(--radius);
    color: var(--ink);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow);
    transform: translateY(-16px);
    opacity: 0;
    pointer-events: none;
    transition:
      opacity 160ms ease,
      transform 160ms ease;
  }

  .nav-open .site-nav {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .site-nav a,
  .site-header.is-scrolled .site-nav a {
    min-height: 44px;
    padding: 10px 12px;
  }

  .site-nav a:hover,
  .site-nav a:focus-visible,
  .site-header.is-scrolled .site-nav a:hover,
  .site-header.is-scrolled .site-nav a:focus-visible {
    background: rgba(45, 158, 196, 0.1);
  }

  .hero,
  .hero-content {
    min-height: 70vh;
  }

  .intro-grid,
  .catalog-heading,
  .technology-layout,
  .workflow-panel,
  .advanced-card,
  .accessory-layout,
  .tube-layout,
  .service-section,
  .contact-layout,
  .product-page-grid,
  .product-page-overview,
  .product-family {
    grid-template-columns: 1fr;
  }

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

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

  .catalog-grid,
  .advanced-grid,
  .detail-grid,
  .spec-grid,
  .system-summary-grid,
  .accessory-grid,
  .tube-summary,
  .feature-matrix {
    grid-template-columns: 1fr;
  }

  .family-highlights {
    grid-template-columns: 1fr;
  }

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

  .featured-card {
    grid-column: span 2;
  }

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

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

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

  .product-family-nav {
    position: static;
  }

  .subpage-hero,
  .subpage-hero-content {
    min-height: 66vh;
  }

  .subpage-hero > img {
    padding: 112px 0 48px 34vw;
    opacity: 0.44;
  }

  .case-gallery {
    grid-template-columns: 1fr;
  }

  .case-gallery figure:first-child {
    grid-row: auto;
    min-height: 360px;
  }
}

@media (max-width: 640px) {
  :root {
    --shell: min(100vw - 24px, 560px);
  }

  .site-header {
    margin-top: 10px;
    padding: 10px 10px 10px 12px;
  }

  .brand-logo {
    width: 132px;
  }

  .hero,
  .hero-content {
    min-height: 68vh;
  }

  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(4, 13, 20, 0.88) 0%, rgba(4, 13, 20, 0.66) 100%),
      linear-gradient(0deg, rgba(4, 13, 20, 0.7) 0%, rgba(4, 13, 20, 0) 36%);
  }

  .hero-content {
    padding: 96px 0 54px;
  }

  .hero h1 {
    font-size: clamp(34px, 10vw, 46px);
  }

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

  .intro-band,
  .capability-section,
  .product-section,
  .product-center-section,
  .advanced-section,
  .systems-section,
  .technology-band,
  .accessory-band,
  .tube-section,
  .visual-band,
  .case-band,
  .service-section,
  .contact-band {
    padding: 64px 0;
  }

  .product-browse-band {
    padding: 56px 0;
  }

  .metrics-grid,
  .capability-grid,
  .product-grid,
  .systems-showcase,
  .workflow-steps,
  .visual-grid,
  .product-page-points,
  .product-visual-grid,
  .product-pager,
  .family-media,
  .service-list {
    grid-template-columns: 1fr;
  }

  .product-family {
    padding: 36px 0;
  }

  .product-family-nav {
    display: grid;
    grid-template-columns: 1fr;
  }

  .family-media img,
  .family-media img:first-child {
    grid-row: auto;
    min-height: 230px;
  }

  .product-page-card {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .product-card-media {
    min-height: 196px;
  }

  .product-page-card-body {
    min-height: 176px;
    padding: 20px;
  }

  .subpage-hero,
  .subpage-hero-content {
    min-height: 70vh;
  }

  .subpage-hero > img {
    padding: 120px 0 0;
    object-position: center bottom;
    opacity: 0.24;
  }

  .product-page-tabs {
    display: grid;
    grid-template-columns: 1fr;
  }

  .product-page-overview {
    padding: 44px 0 22px;
  }

  .product-brief,
  .product-page-points article {
    padding: 20px;
  }

  .product-pager {
    padding-bottom: 64px;
  }

  .product-pager a,
  .product-pager a:last-child {
    align-items: flex-start;
    text-align: left;
  }

  .catalog-panel,
  .spec-card {
    padding: 18px;
  }

  .advanced-card img {
    min-height: 240px;
  }

  .detail-grid article,
  .feature-matrix article,
  .capability-grid article {
    min-height: auto;
  }

  .advanced-card dl {
    grid-template-columns: 1fr;
  }

  .visual-grid figure,
  .visual-grid figure.wide,
  .product-visual-grid figure,
  .product-visual-grid figure.wide {
    grid-column: auto;
    min-height: 260px;
  }

  .featured-card {
    grid-column: auto;
  }

  .metrics-grid div {
    min-height: 108px;
  }

  .case-gallery figure,
  .case-gallery figure:first-child {
    min-height: 300px;
  }

  address a {
    font-size: 24px;
  }

  .site-footer {
    flex-direction: column;
    padding: 22px 12px;
  }
}