:root {
  --ink: #10263c;
  --ink-soft: #4d6174;
  --blue: #155eef;
  --blue-dark: #0b3f9b;
  --blue-soft: #eaf1ff;
  --line: #d7e0e9;
  --surface: #ffffff;
  --canvas: #f4f7fb;
  --deep: #0d2845;
  --max-width: 1180px;
  --shadow: 0 24px 64px rgba(16, 38, 60, 0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--canvas);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

:focus-visible {
  outline: 3px solid rgba(21, 94, 239, 0.34);
  outline-offset: 4px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: #fff;
  background: var(--blue);
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

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

.shell {
  width: min(calc(100% - 48px), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid rgba(215, 224, 233, 0.9);
  background: rgba(244, 247, 251, 0.92);
  backdrop-filter: blur(16px);
}

.site-header.is-scrolled {
  box-shadow: 0 8px 28px rgba(16, 38, 60, 0.08);
}

.header-inner {
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.brand-name {
  font-size: 17px;
  font-weight: 720;
  letter-spacing: 0.025em;
}

.brand-note {
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.16em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 14px;
  font-weight: 640;
}

.site-nav a:not(.nav-contact) {
  position: relative;
  color: var(--ink-soft);
}

.site-nav a:not(.nav-contact)::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  background: var(--blue);
  content: "";
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a[aria-current="page"]::after,
.site-nav a[aria-current="location"]::after {
  transform: scaleX(1);
}

.nav-contact {
  padding: 10px 18px;
  color: #fff;
  background: var(--deep);
  transition: background 180ms ease, transform 180ms ease;
}

.nav-contact:hover {
  background: var(--blue);
  transform: translateY(-1px);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 12px 10px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.menu-toggle > span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
  transition: transform 180ms ease;
}

.hero {
  position: relative;
  overflow: hidden;
  min-height: 690px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(rgba(21, 94, 239, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 94, 239, 0.055) 1px, transparent 1px),
    linear-gradient(145deg, #fff 0%, #f4f7fb 56%, #eaf1ff 100%);
  background-size: 48px 48px, 48px 48px, auto;
}

.hero::after {
  position: absolute;
  top: -240px;
  right: -220px;
  width: 620px;
  height: 620px;
  border: 110px solid rgba(21, 94, 239, 0.055);
  border-radius: 50%;
  content: "";
}

.hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 610px;
  padding-block: 96px 72px;
  grid-template-columns: minmax(0, 1.18fr) minmax(350px, 0.82fr);
  align-items: center;
  gap: 76px;
}

.eyebrow,
.section-label,
.card-kicker,
.index-head,
.contact-link > span {
  margin: 0;
  color: var(--blue);
  font-size: 12px;
  font-weight: 760;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 840px;
  margin: 26px 0 28px;
  font-size: clamp(48px, 6.1vw, 82px);
  font-weight: 720;
  letter-spacing: -0.052em;
  line-height: 1.05;
}

.hero h1 span {
  display: inline-block;
  max-width: 880px;
  margin-top: 12px;
  color: var(--blue-dark);
  font-size: 0.49em;
  letter-spacing: -0.035em;
  line-height: 1.2;
}

.hero-summary {
  max-width: 620px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 17px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  min-height: 50px;
  padding: 0 24px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  font-size: 14px;
  font-weight: 700;
  transition: border-color 180ms ease, background 180ms ease, color 180ms ease, transform 180ms ease;
}

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

.button-primary {
  border-color: var(--blue);
  color: #fff;
  background: var(--blue);
}

.button-primary:hover {
  border-color: var(--blue-dark);
  background: var(--blue-dark);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.76);
}

.button-secondary:hover {
  border-color: var(--blue);
  color: var(--blue-dark);
  background: #fff;
}

.hero-index {
  position: relative;
  padding: 30px;
  border: 1px solid rgba(21, 94, 239, 0.2);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow);
}

.hero-index::before {
  position: absolute;
  top: -1px;
  left: -1px;
  width: 72px;
  height: 4px;
  background: var(--blue);
  content: "";
}

.index-head {
  display: flex;
  padding-bottom: 18px;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.hero-index ol {
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-index li {
  display: grid;
  min-height: 110px;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 52px 1fr;
  align-items: center;
  gap: 20px;
}

.index-number {
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
}

.hero-index strong,
.hero-index small {
  display: block;
}

.hero-index strong {
  font-size: 19px;
  line-height: 1.35;
}

.hero-index small {
  margin-top: 5px;
  color: var(--ink-soft);
  font-size: 12px;
}

.hero-index > p {
  margin: 20px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.section {
  padding-block: 112px;
}

.section-heading {
  display: grid;
  margin-bottom: 48px;
  grid-template-columns: 1fr minmax(280px, 0.55fr);
  align-items: end;
  gap: 56px;
}

.section-heading h2,
.company-layout h2,
.contact-layout h2 {
  margin: 10px 0 0;
  font-size: clamp(36px, 4.2vw, 58px);
  font-weight: 710;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.section-heading > p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.product-card {
  position: relative;
  display: flex;
  min-height: 700px;
  padding: 30px;
  flex-direction: column;
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: 0 14px 38px rgba(16, 38, 60, 0.055);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.product-card:hover,
.product-card:focus-within {
  border-color: rgba(21, 94, 239, 0.55);
  box-shadow: 0 20px 48px rgba(16, 38, 60, 0.11);
  transform: translateY(-3px);
}

.product-card-accent {
  border-top: 4px solid var(--blue);
}

.product-card-summary {
  min-height: 500px;
}

.card-meta {
  display: flex;
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  justify-content: space-between;
}

.card-body {
  margin: 44px 0 34px;
}

.card-body h3 {
  max-width: 500px;
  margin: 14px 0 20px;
  font-size: clamp(30px, 3vw, 46px);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.15;
}

.card-body > p:last-child {
  max-width: 430px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
}

.series-stat {
  display: flex;
  margin-top: 34px;
  padding: 18px 0;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.series-stat strong {
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 30px;
  line-height: 1;
}

.series-stat span {
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 680;
}

.model-list {
  display: grid;
  padding: 0;
  margin: 22px 0 0;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
  list-style: none;
}

.model-list li {
  padding: 10px 12px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  background: var(--canvas);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  overflow-wrap: anywhere;
}

.model-list-seed {
  grid-template-columns: 1fr;
}

.model-list-seed li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.model-list-seed strong {
  color: var(--ink);
  font-size: 13px;
}

.model-list-seed small {
  color: var(--ink-soft);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 11px;
  text-align: right;
}

.product-card > a {
  display: flex;
  padding-top: 20px;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: var(--blue-dark);
  font-size: 14px;
  font-weight: 720;
}

.product-card > a::after {
  position: absolute;
  inset: 0;
  content: "";
}

.product-card > a:focus-visible {
  outline: none;
}

.product-card:focus-within {
  outline: 3px solid rgba(21, 94, 239, 0.34);
  outline-offset: 4px;
}

.product-card > a span {
  transition: transform 180ms ease;
}

.product-card > a:hover span {
  transform: translateX(4px);
}

.product-boundary {
  max-width: 900px;
  margin: 28px 0 0;
  color: var(--ink-soft);
  font-size: 13px;
}

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

.link-card {
  display: flex;
  min-height: 220px;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--surface);
  flex-direction: column;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.link-card:hover,
.link-card:focus-within {
  border-color: rgba(32, 90, 142, 0.45);
  box-shadow: 0 18px 42px rgba(16, 38, 60, 0.08);
  transform: translateY(-3px);
}

.link-card .card-kicker {
  margin-bottom: 16px;
}

.link-card h3 {
  margin: 0 0 12px;
  color: var(--deep);
  font-size: clamp(20px, 2.2vw, 28px);
}

.link-card p {
  margin: 0 0 24px;
  color: var(--ink-soft);
}

.link-card > a {
  margin-top: auto;
  color: var(--blue);
  font-weight: 720;
}

.link-actions {
  display: flex;
  margin-top: auto;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.link-actions a {
  color: var(--blue);
  font-weight: 720;
}

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

.content-panel {
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.content-panel h3 {
  margin: 8px 0 14px;
  color: var(--deep);
  font-size: 24px;
}

.content-panel p,
.content-panel li {
  color: var(--ink-soft);
}

.plain-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.plain-list li {
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.page-boundary {
  padding: 22px 26px;
  border-left: 4px solid var(--blue);
  background: var(--surface-muted);
  color: var(--ink-soft);
}

.related-section {
  background: var(--surface-muted);
}

.page-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(rgba(21, 94, 239, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 94, 239, 0.05) 1px, transparent 1px),
    linear-gradient(145deg, #fff 0%, #f4f7fb 62%, #eaf1ff 100%);
  background-size: 48px 48px, 48px 48px, auto;
}

.page-hero::after {
  position: absolute;
  top: -220px;
  right: -180px;
  width: 520px;
  height: 520px;
  border: 92px solid rgba(21, 94, 239, 0.05);
  border-radius: 50%;
  content: "";
}

.page-hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 520px;
  padding-block: 74px 84px;
  grid-template-columns: minmax(0, 1fr) 220px;
  align-items: end;
  gap: 72px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 42px;
  align-items: center;
  gap: 10px;
  color: var(--ink-soft);
  font-size: 12px;
}

.breadcrumb a:hover {
  color: var(--blue);
}

.page-hero h1 {
  max-width: 900px;
  margin: 20px 0 24px;
  font-size: clamp(46px, 6.2vw, 78px);
  font-weight: 720;
  letter-spacing: -0.052em;
  line-height: 1.05;
}

.product-detail-hero h1 {
  font-size: clamp(42px, 5.5vw, 70px);
}

.page-hero-layout > div:first-child > p:last-child,
.page-hero-layout > div:first-child > .hero-actions + p {
  max-width: 700px;
}

.page-hero-layout > div:first-child > p:not(.eyebrow) {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: 17px;
}

.page-hero-aside {
  display: grid;
  min-height: 188px;
  padding: 26px;
  border: 1px solid rgba(21, 94, 239, 0.24);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
  align-content: space-between;
}

.page-hero-aside strong {
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 64px;
  font-weight: 650;
  line-height: 1;
}

.page-hero-aside span {
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 760;
  letter-spacing: 0.12em;
}

.compact-heading {
  align-items: start;
}

.process-section {
  border-top: 1px solid var(--line);
  background: #eef3f8;
}

.route-steps {
  display: grid;
  padding: 0;
  margin: 0;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
  list-style: none;
}

.route-steps li {
  display: flex;
  min-height: 190px;
  padding: 26px;
  flex-direction: column;
  background: var(--surface);
}

.route-steps span {
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}

.route-steps strong {
  margin-top: auto;
  font-size: 20px;
}

.route-steps small {
  margin-top: 7px;
  color: var(--ink-soft);
  font-size: 12px;
}

.detail-layout {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  align-items: start;
  gap: 80px;
}

.detail-layout h2,
.boundary-panel h2 {
  margin: 10px 0 20px;
  font-size: clamp(36px, 4.2vw, 58px);
  font-weight: 710;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.detail-intro {
  max-width: 440px;
  margin: 0;
  color: var(--ink-soft);
}

.model-directory,
.dimension-grid {
  display: grid;
  padding: 0;
  margin: 0;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  list-style: none;
}

.model-directory li {
  display: flex;
  min-height: 78px;
  padding: 18px;
  border: 1px solid var(--line);
  align-items: center;
  color: var(--ink);
  background: var(--surface);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  font-weight: 680;
  overflow-wrap: anywhere;
}

.model-directory-large li {
  min-height: 118px;
  color: var(--blue-dark);
  font-size: 22px;
}

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

.dimension-grid li {
  display: flex;
  min-height: 132px;
  padding: 22px;
  border: 1px solid var(--line);
  flex-direction: column;
  background: var(--surface);
}

.dimension-grid span {
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
}

.dimension-grid strong {
  margin-top: auto;
  font-size: 17px;
}

.boundary-panel {
  display: grid;
  padding: 38px;
  border: 1px solid var(--line);
  grid-template-columns: 0.8fr 1.2fr;
  align-items: end;
  gap: 64px;
  background: var(--surface);
}

.boundary-panel p:last-child {
  margin: 0;
  color: var(--ink-soft);
}

.configuration {
  border-top: 1px solid var(--line);
  background: #eef3f8;
}

.configuration-layout {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 24px;
}

.feature-panel,
.delivery-panel {
  padding: 34px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.panel-label {
  margin: 0;
  color: var(--blue);
  font-size: 11px;
  font-weight: 760;
  letter-spacing: 0.13em;
}

.feature-panel h3,
.delivery-panel h3 {
  margin: 13px 0 28px;
  font-size: 26px;
  letter-spacing: -0.03em;
}

.feature-list {
  display: grid;
  padding: 0;
  margin: 0;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding: 12px 12px 12px 30px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  background: var(--canvas);
  font-size: 13px;
  font-weight: 650;
}

.feature-list li::before {
  position: absolute;
  top: 50%;
  left: 13px;
  width: 6px;
  height: 6px;
  background: var(--blue);
  content: "";
  transform: translateY(-50%);
}

.delivery-steps {
  padding: 0;
  margin: 0;
  list-style: none;
}

.delivery-steps li {
  display: grid;
  min-height: 66px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  grid-template-columns: 48px 1fr;
  align-items: center;
  gap: 10px;
}

.delivery-steps li:last-child {
  border-bottom: 1px solid var(--line);
}

.delivery-steps > li > span {
  color: var(--blue);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}

.delivery-steps strong,
.delivery-steps small {
  display: block;
}

.delivery-steps strong {
  font-size: 15px;
}

.delivery-steps small {
  margin-top: 2px;
  color: var(--ink-soft);
  font-size: 12px;
}

.company {
  border-top: 1px solid var(--line);
  background: #fff;
}

.company-layout {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 80px;
}

.identity-panel {
  margin: 0;
  border-top: 1px solid var(--ink);
}

.identity-panel > div {
  display: grid;
  min-height: 104px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 132px 1fr;
  align-items: center;
  gap: 24px;
}

.identity-panel dt {
  color: var(--ink-soft);
  font-size: 13px;
}

.identity-panel dd {
  margin: 0;
  font-size: 20px;
  font-weight: 680;
}

.contact {
  color: #fff;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    var(--deep);
  background-size: 80px 80px, auto;
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  align-items: end;
  gap: 80px;
}

.section-label-light {
  color: #84adff;
}

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

.contact-layout > div > p:last-child {
  max-width: 440px;
  margin: 24px 0 0;
  color: #b9c8d8;
}

.contact-link {
  position: relative;
  display: grid;
  min-height: 174px;
  padding: 30px 84px 30px 30px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  align-content: center;
  transition: border-color 180ms ease, background 180ms ease;
}

.contact-link:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.055);
}

.contact-link > span {
  color: #84adff;
}

.contact-link strong {
  margin-top: 9px;
  overflow-wrap: anywhere;
  font-size: clamp(24px, 3vw, 38px);
  font-weight: 640;
  letter-spacing: -0.03em;
}

.contact-link i {
  position: absolute;
  top: 50%;
  right: 30px;
  font-size: 30px;
  font-style: normal;
  transform: translateY(-50%);
}

.site-footer {
  color: #c0cedb;
  background: #081d33;
}

.footer-inner {
  display: flex;
  min-height: 92px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  font-size: 13px;
}

.footer-inner p {
  margin: 0;
  color: #fff;
  font-weight: 650;
}

.footer-inner a:hover {
  color: #fff;
}

@media (max-width: 1180px) {
  .header-inner {
    gap: 20px;
  }

  .site-nav {
    gap: 20px;
    font-size: 13px;
  }

  .brand {
    gap: 9px;
  }

  .brand-name {
    font-size: 15px;
  }

  .brand-note {
    font-size: 9px;
  }
}

@media (max-width: 960px) {
  .site-nav {
    gap: 12px;
    font-size: 12px;
  }

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

  .hero-layout {
    min-height: auto;
    padding-block: 80px;
    grid-template-columns: 1fr;
    gap: 52px;
  }

  .hero-index {
    max-width: 680px;
  }

  .section-heading,
  .configuration-layout,
  .company-layout,
  .contact-layout,
  .page-hero-layout,
  .detail-layout,
  .boundary-panel {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .page-hero-aside {
    max-width: 300px;
  }

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

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

  .contact-link {
    max-width: 720px;
  }
}

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

  .header-inner {
    min-height: 68px;
  }

  .brand {
    display: block;
  }

  .brand-name,
  .brand-note {
    display: block;
  }

  .brand-name {
    font-size: 14px;
  }

  .brand-note {
    margin-top: 1px;
    font-size: 9px;
  }

  .menu-toggle {
    display: block;
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(2) {
    transform: translateY(3.5px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(3) {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    top: 68px;
    right: 0;
    left: 0;
    display: none;
    padding: 24px 16px 32px;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
    box-shadow: 0 18px 30px rgba(16, 38, 60, 0.12);
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .link-grid,
  .content-pairs {
    grid-template-columns: 1fr;
  }

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

  .site-nav a {
    padding: 14px 12px;
  }

  .site-nav a:not(.nav-contact)::after {
    display: none;
  }

  .nav-contact {
    margin-top: 8px;
    text-align: center;
  }

  .hero {
    min-height: auto;
  }

  .page-hero-layout {
    min-height: auto;
    padding-block: 46px 62px;
  }

  .breadcrumb {
    margin-bottom: 30px;
  }

  .page-hero h1,
  .product-detail-hero h1 {
    font-size: clamp(38px, 11vw, 54px);
  }

  .page-hero-layout > div:first-child > p:not(.eyebrow) {
    font-size: 15px;
  }

  .page-hero-aside {
    min-height: 150px;
  }

  .hero-layout {
    padding-block: 62px 64px;
    gap: 42px;
  }

  .hero h1 {
    margin-block: 20px 24px;
    font-size: clamp(42px, 12vw, 64px);
  }

  .hero h1 span {
    display: inline-block;
    margin-top: 8px;
    font-size: 0.48em;
  }

  .hero-summary {
    font-size: 15px;
  }

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

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

  .hero-index {
    padding: 24px;
  }

  .hero-index li {
    min-height: 96px;
    grid-template-columns: 40px 1fr;
    gap: 12px;
  }

  .hero-index strong {
    font-size: 16px;
  }

  .section {
    padding-block: 76px;
  }

  .section-heading {
    margin-bottom: 32px;
  }

  .section-heading h2,
  .company-layout h2,
  .contact-layout h2 {
    font-size: 38px;
  }

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

  .product-card {
    min-height: auto;
    padding: 24px;
  }

  .product-card-summary {
    min-height: auto;
  }

  .card-body h3 {
    font-size: 34px;
  }

  .model-list {
    grid-template-columns: 1fr;
  }

  .model-list-seed li {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }

  .model-list-seed small {
    text-align: left;
  }

  .feature-panel,
  .delivery-panel {
    padding: 24px;
  }

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

  .model-directory,
  .model-directory-large,
  .dimension-grid,
  .route-steps {
    grid-template-columns: 1fr;
  }

  .route-steps li {
    min-height: 150px;
  }

  .boundary-panel {
    padding: 24px;
  }

  .identity-panel > div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .identity-panel dd {
    font-size: 17px;
  }

  .contact-link {
    min-height: 150px;
    padding: 24px 58px 24px 22px;
  }

  .contact-link i {
    right: 20px;
  }

  .footer-inner {
    padding-block: 24px;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
  }
}

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

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


/* preview.5: shared navigation and customer journey. */
:root { --surface-muted: #eef3f8; }
html { scroll-padding-top: 100px; }
.header-inner { gap: 24px; }
.brand { display: grid; grid-template-columns: 42px auto; grid-template-rows: auto auto; align-items: center; column-gap: 12px; row-gap: 0; flex-shrink: 0; }
.brand::before { content: ''; grid-row: 1 / span 2; width: 42px; height: 42px; background: url('../brand/extphoton-logo.png') center / contain no-repeat; }
.brand-name { grid-column: 2; align-self: end; line-height: 1.2; }
.brand-note { grid-column: 2; align-self: start; letter-spacing: .2em; }
.site-nav { gap: 24px; }
.nav-group { position: relative; }
.nav-group > summary { cursor: pointer; padding: 20px 0; color: var(--ink-soft); list-style: none; white-space: nowrap; }
.nav-group > summary::-webkit-details-marker { display: none; }
.nav-group > summary::after { content: '+'; margin-left: 6px; color: var(--blue); }
.nav-group[open] > summary::after { content: '−'; }
.nav-group > .is-current { color: var(--blue-dark); }
.nav-submenu { position: absolute; z-index: 101; top: 100%; left: -18px; width: 210px; padding: 10px; background: #fff; border: 1px solid var(--line); box-shadow: var(--shadow); }
.nav-submenu a { display: block; padding: 12px; border-radius: 2px; }
.nav-submenu a:hover, .nav-submenu a[aria-current] { background: var(--blue-soft); color: var(--blue-dark); }
.nav-submenu a::after { display: none; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px 28px; padding-block: 30px; border-bottom: 1px solid #2b4055; font-size: 13px; }
.home-v5 .hero { min-height: auto; background: linear-gradient(120deg, #f4f7fb 45%, #e7eff9); }
.home-v5 .hero::after { display: none; }
.home-v5 .hero-layout { min-height: 580px; padding-block: 76px 60px; grid-template-columns: 1.15fr 1fr; gap: 68px; }
.home-v5 .hero h1 { font-size: clamp(38px, 4.4vw, 62px); line-height: 1.26; letter-spacing: -.035em; margin-block: 24px; }
.home-v5 .hero-summary { font-size: 16px; line-height: 1.95; }
.home-v5 .hero-actions { margin-top: 30px; gap: 12px; }
.home-v5 .button { gap: 16px; }
.home-v5 .section { padding-block: 78px; }
.home-v5 .section-heading { margin-bottom: 34px; gap: 40px; }
.home-v5 .section-heading h2, .home-v5 .company-layout h2, .home-v5 .contact-layout h2 { font-size: clamp(30px, 3.2vw, 44px); line-height: 1.25; letter-spacing: -.025em; }
.home-v5 .content-panel { padding: 30px; }
.home-v5 .content-panel p { line-height: 1.9; }
.home-outline { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; padding-block: 22px; border-top: 1px solid #cbd7e6; font-size: 13px; color: var(--ink-soft); }
.home-outline a:hover, .text-link:hover { color: var(--blue); }
.journey-map { border: 1px solid #cad8e9; padding: 24px; background: #ffffffd9; box-shadow: 0 16px 36px #10263c0b; }
.map-heading { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding-bottom: 18px; font-size: 14px; font-weight: 700; }
.map-marker { color: var(--ink-soft); font-size: 9px; letter-spacing: .12em; }
.map-pair { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; }
.map-pair a { padding: 16px; background: #f1f5fa; border: 1px solid #dce4ed; }
.journey-map small { display: block; font-size: 11px; color: var(--ink-soft); margin-bottom: 6px; }
.journey-map strong { display: block; font-size: 17px; }
.map-hub { display: block; margin: 18px 0; padding: 22px 20px; background: var(--deep); color: #fff; }
.map-hub small { color: #accbff; }
.map-hub strong { font-size: 20px; }
.map-hub strong span { float: right; }
.map-hub > span { display: block; font-size: 12px; color: #c1d0e1; margin-top: 7px; }
.map-base { display: flex; justify-content: space-between; gap: 10px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 13px; color: var(--blue-dark); }
.journey-map a:hover { outline: 2px solid #5f8dcc; outline-offset: 2px; }
.solution-home { border-block: 1px solid var(--line); background: #eaf0f7; }
.solution-layout { display: grid; grid-template-columns: .72fr 1.4fr; gap: 40px; align-items: center; }
.solution-layout h3 { font-size: 23px; margin: 0; }
.solution-layout p { font-size: 14px; color: var(--ink-soft); margin: 14px 0 24px; }
.process-ribbon { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); list-style: none; gap: 12px; padding: 0; margin: 0; }
.process-ribbon li { position: relative; border-top: 3px solid var(--blue); background: #fff; padding: 22px 16px; }
.process-ribbon li:not(:last-child)::after { content: '→'; position: absolute; right: -14px; top: 47%; color: var(--blue-dark); z-index: 1; }
.process-ribbon span { display: block; color: var(--blue); font: 12px ui-monospace,monospace; margin-bottom: 28px; }
.process-ribbon strong { display: block; font-size: 16px; }
.process-ribbon small { display: block; color: var(--ink-soft); font-size: 11px; margin-top: 8px; }
.home-v5 .product-card-summary { min-height: 380px; padding: 28px; }
.home-v5 .card-body { margin: 24px 0 28px; }
.home-v5 .card-body h3 { font-size: clamp(25px,2.5vw,34px); line-height: 1.4; margin: 0 0 18px; }
.home-v5 .card-body p { color: var(--ink-soft); font-size: 15px; line-height: 1.85; }
.home-v5 .product-card > a { margin-top: auto; }
.capability-tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 20px 0 0; }
.capability-tags li { padding: 5px 10px; background: var(--blue-soft); color: var(--blue-dark); font-size: 11px; }
.technology-strip { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 22px; padding: 20px 24px; border: 1px solid var(--line); }
.technology-strip p { margin: 0; }
.technology-strip strong { display: block; font-size: 14px; }
.technology-strip span { font-size: 13px; color: var(--ink-soft); }
.technology-strip a,.text-link { color: var(--blue-dark); font-size: 14px; font-weight: 700; }
.compact-process { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 16px; padding: 22px 0 0; margin: 26px 0 0; border-top: 1px solid #ccd7e4; list-style: none; font-size: 13px; }
.compact-process li { position: relative; }
.compact-process li:not(:last-child)::after { content: '→'; position: absolute; right: 8px; color: var(--blue); }
.table-scroll { overflow-x: auto; margin-top: 28px; border: 1px solid var(--line); }
.comparison-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 14px; background: #fff; }
.comparison-table caption { text-align: left; padding: 16px 20px; color: var(--ink-soft); font-size: 13px; }
.comparison-table th,.comparison-table td { padding: 20px; border-top: 1px solid var(--line); vertical-align: top; }
.comparison-table thead { background: #eaf0f7; }
.comparison-table tbody th { width: 22%; color: var(--blue-dark); }
.comparison-table td { color: var(--ink-soft); }
.section-tail { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin-top: 24px; }
.section-tail p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.contact-guide { display: inline-block; color: #fff; margin-top: 18px; text-decoration: underline; text-underline-offset: 5px; }
@media (max-width: 1100px) { .site-nav { gap: 14px; } .home-v5 .hero-layout { gap: 32px; } .solution-layout { grid-template-columns: 1fr; } }
@media (min-width: 761px) and (max-width: 880px) { .brand-name { font-size: 13px; } .site-nav { gap: 10px; font-size: 11px; } .nav-contact { padding: 10px; } }
@media (max-width: 960px) { .home-v5 .hero-layout { grid-template-columns: 1fr 1fr; gap: 24px; } .home-v5 .hero h1 { font-size: 38px; } .home-v5 .hero-actions .button { padding-inline: 14px; font-size: 12px; } }
@media (max-width: 760px) {
 .brand { grid-template-columns: 36px auto; column-gap: 9px; }
 .brand::before { width: 36px; height: 36px; }
 .home-v5 .hero-layout { grid-template-columns: 1fr; padding-block: 46px 32px; gap: 36px; }
 .home-v5 .hero h1 { font-size: clamp(32px,8.5vw,46px); }
 .home-v5 .hero-actions { grid-template-columns: 1fr 1fr; gap: 10px; }
 .home-v5 .hero-actions .button { padding-inline: 10px; gap: 6px; }
 .home-v5 .section { padding-block: 52px; }
 .home-v5 .section-heading { gap: 18px; }
 .home-outline { justify-content: flex-start; gap: 12px 22px; font-size: 12px; }
 .journey-map { padding: 18px; }
 .map-pair a { padding: 14px 12px; }
 .map-pair strong { font-size: 15px; }
 .map-hub strong { font-size: 18px; }
 .process-ribbon { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; }
 .process-ribbon li { padding: 18px 14px; }
 .process-ribbon li::after { display: none; }
 .process-ribbon span { margin-bottom: 16px; }
 .technology-strip { align-items: flex-start; flex-direction: column; }
 .compact-process { grid-template-columns: 1fr; gap: 14px; }
 .compact-process li { padding-left: 20px; }
 .compact-process li::before { content: '·'; color: var(--blue); position: absolute; left: 0; }
 .compact-process li:not(:last-child)::after { display: none; }
 .comparison-table { min-width: 520px; }
 .comparison-table th,.comparison-table td { padding: 14px; }
 .footer-links { gap: 16px 24px; }
 .header-inner { flex-wrap: wrap; gap: 0; padding-block: 12px; }
 .menu-toggle { display: none; }
 .site-nav { position: static; display: flex; width: 100%; max-height: none; padding: 12px 0; box-shadow: none; border: 0; font-size: 14px; }
 .nav-group > summary { padding: 14px 12px; }
 .nav-submenu { position: static; width: 100%; box-shadow: none; padding: 4px 12px; border: 0; background: #f2f6fc; }
 .js-nav .header-inner { flex-wrap: nowrap; padding-block: 0; }
 .js-nav .menu-toggle { display: block; }
 .js-nav .site-nav { display: none; position: fixed; top: 68px; padding: 16px; max-height: calc(100dvh - 68px); overflow-y: auto; border-bottom: 1px solid var(--line); }
 .js-nav .site-nav.is-open { display: flex; }
}

/* Business inquiry form. */
.contact-form-section { background: var(--surface-muted); }
.contact-form-layout { display: grid; grid-template-columns: minmax(0, .75fr) minmax(0, 1.25fr); gap: clamp(36px, 6vw, 88px); align-items: start; }
.contact-form-intro { position: sticky; top: 112px; }
.contact-form-intro h2 { margin: 10px 0 20px; font-size: clamp(36px, 4.2vw, 58px); letter-spacing: -.04em; }
.contact-form-intro > p { color: var(--ink-soft); line-height: 1.8; }
.contact-form-intro .plain-list { margin-top: 28px; }
.contact-email-fallback { margin-top: 30px; padding-top: 24px; border-top: 1px solid var(--line); }
.contact-email-fallback a { color: var(--blue-dark); font-weight: 720; overflow-wrap: anywhere; }
.contact-form { padding: clamp(24px, 4vw, 42px); border: 1px solid var(--line); background: #fff; box-shadow: 0 18px 50px rgba(18, 45, 78, .08); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px 18px; }
.form-field { display: grid; gap: 9px; color: var(--ink); font-size: 13px; font-weight: 700; }
.form-field-wide { grid-column: 1 / -1; }
.form-field input,
.form-field select,
.form-field textarea { width: 100%; border: 1px solid #b8c7d8; border-radius: 0; padding: 13px 14px; color: var(--ink); background: #fff; font: inherit; font-weight: 450; line-height: 1.5; transition: border-color 160ms ease, box-shadow 160ms ease; }
.form-field textarea { min-height: 176px; resize: vertical; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus { outline: 0; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(38, 99, 176, .15); }
.form-consent { display: flex; gap: 11px; align-items: flex-start; margin: 24px 0 0; color: var(--ink-soft); font-size: 13px; line-height: 1.65; }
.form-consent input { flex: 0 0 auto; width: 17px; height: 17px; margin-top: 2px; accent-color: var(--blue); }
.form-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-top: 26px; }
.form-actions .button { border-style: solid; cursor: pointer; font: inherit; }
.form-actions .button:disabled { cursor: wait; opacity: .65; transform: none; }
.form-status { flex: 1 1 260px; min-height: 24px; margin: 0; color: var(--ink-soft); font-size: 13px; line-height: 1.6; }
.form-status[data-state='success'] { color: #176b3a; }
.form-status[data-state='error'] { color: #a72d2d; }
.form-noscript { margin: 18px 0 0; color: var(--ink-soft); font-size: 13px; }
.form-trap { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }

@media (max-width: 900px) {
  .contact-form-layout { grid-template-columns: 1fr; }
  .contact-form-intro { position: static; }
}

@media (max-width: 560px) {
  .contact-form { padding: 22px 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .form-field-wide { grid-column: auto; }
  .form-actions { align-items: stretch; flex-direction: column; }
  .form-actions .button { justify-content: center; width: 100%; }
  .form-status { flex-basis: auto; }
}