:root {
  --black: #0b0c0e;
  --black-layer: #161616;
  --dark-layer: #262626;
  --metal: #9da3a5;
  --metal-dark: #4f5557;
  --metal-light: #e2e4e2;
  --white: #ffffff;
  --gray-10: #f4f4f4;
  --gray-20: #e0e0e0;
  --gray-50: #8d8d8d;
  --gray-70: #525252;
  --surface-warm: #f7f7f4;
  --surface-mist: #f1f2f0;
  --surface-deep: #e7e8e4;
  --content: min(100% - 64px, 1440px);
  --display-font: "IBM Plex Sans", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --body-font: "IBM Plex Sans", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--black-layer);
  background: var(--surface-warm);
  font-family: var(--body-font);
  font-size: 16px;
  line-height: 1.65;
  -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 var(--metal-light);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: var(--black-layer);
  background: var(--white);
  transform: translateY(-180%);
}

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

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  display: flex;
  width: 100%;
  height: 88px;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  transition: background-color 240ms ease;
}

.site-header.is-scrolled {
  background: rgba(11, 12, 14, 0.94);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: block;
  width: 42px;
  height: 38px;
  flex: 0 0 auto;
  background: url("assets/images/brand/junshan-logo.webp") center / contain no-repeat;
}

.header-start {
  display: flex;
  height: 100%;
  align-items: center;
  gap: 22px;
}

.header-back {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 300;
  line-height: 1;
}

.header-back:hover,
.header-back:focus-visible {
  color: var(--metal-light);
}

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

.brand-copy strong {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.brand-copy span {
  margin-top: 6px;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.28em;
}

html[lang="en"] .title-tail::before {
  content: " ";
  white-space: pre;
}

.site-nav {
  display: flex;
  height: 100%;
  align-items: center;
  gap: 8px;
}

.language-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 16px;
  color: #8f9699;
  white-space: nowrap;
}

.language-switch a,
.site-nav .language-switch a {
  display: inline-flex;
  height: auto;
  min-height: 44px;
  align-items: center;
  padding: 0;
  color: #bfc4c6;
  border: 0;
  font-size: 12px;
  transition: color 180ms ease;
}

.language-switch a:hover,
.language-switch a[aria-current="true"],
.site-nav .language-switch a:hover,
.site-nav .language-switch a[aria-current="true"] {
  color: var(--white);
  border: 0;
}

.site-nav a {
  display: inline-flex;
  height: 100%;
  align-items: center;
  padding: 0 22px;
  font-size: 14px;
  color: #f4f4f4;
  border-bottom: 2px solid transparent;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.site-nav a:hover {
  color: var(--white);
  border-bottom-color: var(--metal-light);
}

.site-nav a[aria-current="page"] {
  color: var(--white);
  border-bottom-color: var(--metal-light);
}

.site-nav .nav-contact {
  height: 48px;
  margin-left: 16px;
  background: #323638;
  border-bottom: 0;
}

.site-nav .nav-contact:hover {
  background: #454a4c;
}

.nav-products {
  position: relative;
  display: flex;
  height: 100%;
  align-items: center;
  --catalog-panel: #202224;
  --catalog-ease: cubic-bezier(0.16, 1, 0.3, 1);
}

.product-dropdown-hit {
  position: fixed;
  top: 88px;
  right: clamp(16px, 3.6vw, 64px);
  left: clamp(16px, 3.6vw, 64px);
  width: auto;
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 12px;
  visibility: hidden;
  pointer-events: none;
  transition: visibility 160ms;
}

.product-dropdown {
  position: relative;
  width: 100%;
  max-height: calc(100dvh - 112px);
  overflow-y: auto;
  color: var(--white);
  background: var(--catalog-panel);
  border-radius: 16px;
  box-shadow: 0 22px 52px rgba(0, 0, 0, 0.24);
  opacity: 0;
  transform-origin: 80% 0;
  transform: translateY(-12px) scale(0.975);
  transition: opacity 160ms, transform 160ms var(--catalog-ease);
}

.nav-products.is-product-open .product-dropdown-hit {
  visibility: visible;
  pointer-events: auto;
}
.nav-products.is-product-open .product-dropdown {
  opacity: 1;
  transform: translateY(0) scale(1);
  transition: opacity 180ms, transform 380ms var(--catalog-ease);
}

.product-menu-toggle,
.product-dropdown__close {
  display: grid;
  width: 44px;
  height: 44px;
  flex: none;
  padding: 0;
  place-items: center;
  color: #f4f4f4;
  background: #242628;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
}
.product-menu-toggle { margin-right: 8px; }
.product-menu-toggle:hover,
.product-dropdown__close:hover { background: #35383b; }
.product-menu-toggle svg { width: 18px; height: 18px; transition: transform 250ms var(--catalog-ease); }
.product-menu-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.product-menu-toggle:focus-visible,
.product-dropdown__close:focus-visible { outline: 2px solid #e2e4e2; outline-offset: 4px; }
.nav-products svg,
.family-card svg { display: block; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.product-dropdown__close svg { width: 22px; height: 22px; }
.product-dropdown__head {
  display: flex;
  min-height: 88px;
  padding: 24px 32px 16px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.product-dropdown__head > span { color: #fff; font-size: 22px; font-weight: 400; }
.product-dropdown__actions { display: flex; align-items: center; gap: 24px; }
.site-nav .product-dropdown a {
  display: flex;
  height: auto;
  min-height: 44px;
  padding: 0;
  align-items: center;
  gap: 12px;
  color: #e4e4e4;
  border: 0;
  font-size: 14px;
  font-weight: 400;
}
.site-nav .product-dropdown a:hover { color: #fff; }
.site-nav .product-dropdown a:focus-visible { outline: 2px solid #e2e4e2; outline-offset: 2px; }
.product-dropdown__body { display: grid; grid-template-columns: 224px minmax(0, 1fr) 240px; gap: 32px; padding: 8px 32px 32px; }
.product-dropdown__categories { position: relative; display: grid; align-self: start; gap: 4px; padding: 0; }
.product-dropdown__marker {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 48px;
  border-radius: 999px;
  background: #35383b;
  pointer-events: none;
  transition: transform 220ms var(--catalog-ease);
}
.site-nav .product-dropdown .product-dropdown__category { position: relative; min-height: 48px; padding: 0 20px; border-radius: 999px; justify-content: space-between; color: #b8bbbe; }
.site-nav .product-dropdown .product-dropdown__category.is-active { color: #fff; background: transparent; }
.product-dropdown__category.is-active::after { content: none; }
.product-dropdown__category svg { width: 18px; height: 18px; flex: none; opacity: 0; transform: translateX(-8px); transition: opacity 160ms, transform 220ms var(--catalog-ease); }
.product-dropdown__category:is(.is-active, :hover, :focus-visible) svg { opacity: 1; transform: none; }
.product-dropdown__panels { min-width: 0; padding: 8px 0; }
.product-dropdown__panel { display: none; }
.product-dropdown__panel.is-active { display: block; }
.product-dropdown__panel h3 { margin: 0 0 24px; }
.site-nav .product-dropdown__panel h3 a { color: #fff; font-size: 32px; font-weight: 300; line-height: 1.2; }
.product-dropdown__subcategories { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 16px; }
.site-nav .product-dropdown__subcategories a {
  min-height: 60px;
  padding: 8px 12px;
  border: 0;
  border-radius: 12px;
  justify-content: space-between;
  font-size: 14px;
  line-height: 1.5;
  transition: background 160ms, color 160ms;
}
.site-nav .product-dropdown__subcategories a:is(:hover, :focus-visible) { background: #303336; }
.catalog-arrow { display: grid; width: 42px; height: 42px; flex: none; place-items: center; border-radius: 50%; background: #f0f0f0; color: #161616; transition: background 180ms, color 180ms; }
.catalog-arrow svg { display: block; width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; transform: rotate(-45deg); transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1); }
a:is(:hover, :focus-visible) > .catalog-arrow svg,
a:is(:hover, :focus-visible) > div > .catalog-arrow svg { transform: rotate(0); }
.product-dropdown__subcategories .catalog-arrow { width: 30px; height: 30px; background: transparent; color: inherit; box-shadow: inset 0 0 0 1px #595d60; }
.product-dropdown__subcategories .catalog-arrow svg { width: 16px; height: 16px; transform: none; }
.product-dropdown__subcategories a:is(:hover, :focus-visible) .catalog-arrow { background: #fff; color: #161616; box-shadow: none; }
.product-dropdown__subcategories a:is(:hover, :focus-visible) .catalog-arrow svg { transform: rotate(-45deg); }
.site-nav .product-dropdown .product-dropdown__preview { display: block; align-self: center; color: #161616; background: #fff; border-radius: 12px; overflow: hidden; }
.site-nav .product-dropdown .product-dropdown__preview:hover { color: #161616; }
.product-dropdown__preview figure { margin: 0; }
.product-dropdown__preview img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: contain; }
.product-dropdown__preview > div { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 20px 20px; }
.product-dropdown__preview .catalog-arrow { width: 30px; height: 30px; }

.site-arrow { --arrow-rest: -45deg; --arrow-hover: 0deg; font-style: normal; line-height: 1; }
.site-arrow.site-arrow--back { --arrow-rest: 180deg; --arrow-hover: 180deg; }
.site-arrow.site-arrow--down { --arrow-rest: 90deg; --arrow-hover: 90deg; }
.site-arrow.site-arrow--up { --arrow-rest: -90deg; --arrow-hover: -90deg; }
.site-arrow.site-arrow--zoom { --arrow-rest: -45deg; --arrow-hover: -45deg; }
.site-arrow svg { transform: rotate(var(--arrow-rest)); }
:is(a, button):is(:hover, :focus-visible) .site-arrow { background: #161616; color: #fff; }
:is(a, button):is(:hover, :focus-visible) .site-arrow svg { transform: rotate(var(--arrow-hover)); }
:is(a, button):is(:hover, :focus-visible) .site-arrow--back svg { transform: translateX(-2px) rotate(180deg); }
:is(a, button):is(:hover, :focus-visible) .site-arrow--down svg { transform: translateY(2px) rotate(90deg); }
:is(a, button):is(:hover, :focus-visible) .site-arrow--up svg { transform: translateY(-2px) rotate(-90deg); }
:is(a, button):is(:hover, :focus-visible) .site-arrow--zoom svg { transform: translate(1px, -1px) rotate(-45deg); }
.header-back .site-arrow { width: 36px; height: 36px; background: #242628; color: #e4e4e4; }
.header-back:is(:hover, :focus-visible) .site-arrow { background: #f0f0f0; color: #161616; }
.model-card .site-arrow { width: 30px; height: 30px; color: #161616; grid-column: 2; grid-row: 1; }
.model-card .site-arrow svg { width: 16px; height: 16px; }
.model-card:is(:hover, :focus-visible) .site-arrow { color: #fff; }
.product-stage .site-arrow, .product-inquiry .site-arrow { width: 30px; height: 30px; }
.product-stage .site-arrow svg, .product-inquiry .site-arrow svg { width: 16px; height: 16px; }
.product-stage:is(:hover, :focus-visible) .site-arrow { background: #fff; color: #161616; }
:is(.feature-link, .row-link, .capability-row--resource > a) .site-arrow { width: 30px; height: 30px; }
:is(.feature-link, .row-link, .capability-row--resource > a) .site-arrow svg { width: 16px; height: 16px; }
:is(.feature-link, .row-link, .capability-row--resource > a) { display: inline-flex; min-height: 44px; align-items: center; gap: 12px; }
.site-action--quiet .site-arrow { background: transparent; color: #161616; box-shadow: inset 0 0 0 1px #9da3a5; }
.site-action--quiet:is(:hover, :focus-visible) .site-arrow { color: #fff; background: #161616; box-shadow: none; }
.site-action--inverse .site-arrow { background: #f0f0f0; color: #161616; }
.site-action--inverse:is(:hover, :focus-visible) .site-arrow { background: #35383b; color: #fff; }
.site-action--inverse.site-action--quiet .site-arrow { color: #f0f0f0; background: transparent; }
.site-action--inverse.site-action--quiet:is(:hover, :focus-visible) .site-arrow { color: #161616; background: #f0f0f0; }
.product-dropdown ::selection { color: #161616; background: #b8bbbe; }
.product-dropdown { scrollbar-width: thin; scrollbar-color: #939698 #202224; }
.product-dropdown::-webkit-scrollbar { width: 8px; }
.product-dropdown::-webkit-scrollbar-thumb { background: #939698; border-radius: 8px; }
[data-subcategory-target] { scroll-margin-top: 112px; }

.menu-button {
  display: none;
  position: relative;
  z-index: 2;
  flex: 0 0 auto;
  color: var(--white);
  background: transparent;
  border: 0;
}

.hero {
  position: relative;
  min-height: 780px;
  height: 100svh;
  overflow: hidden;
  color: var(--white);
  background: var(--black);
}

.hero-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: grayscale(1) saturate(0);
  animation: hero-arrive 1.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.hero-shade {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.14);
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  width: var(--content);
  height: 100%;
  margin: 0 auto;
  padding-top: 178px;
  padding-bottom: 112px;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.concept-note {
  position: absolute;
  top: 120px;
  right: 0;
  margin: 0;
  padding: 8px 12px;
  color: #e0e0e0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.28);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.hero h1 {
  max-width: 1120px;
  margin: 0;
  font-family: var(--display-font);
  font-size: clamp(52px, 5.8vw, 84px);
  font-weight: 300;
  line-height: 1.06;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.title-tail {
  display: inline;
}

.hero-summary {
  max-width: 42ch;
  margin: 32px 0 0;
  color: #e0e0e0;
  font-size: 18px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-top: 42px;
}

.button {
  display: inline-flex;
  min-height: 56px;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  padding: 0 18px 0 24px;
  font-size: 15px;
  font-weight: 600;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

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

.button:disabled {
  cursor: not-allowed;
  opacity: 0.82;
  transform: none;
}

.button--primary {
  min-width: 240px;
  color: var(--black-layer);
  background: var(--metal-light);
}

.button--primary:hover {
  background: var(--white);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.52);
  font-size: 15px;
  font-weight: 600;
}

.text-link:hover {
  border-color: var(--metal-light);
}

.site-action {
  --action-ink: var(--black-layer);
  --action-disc: var(--black-layer);
  --action-symbol: var(--white);
  display: inline-flex;
  width: fit-content;
  min-height: 56px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--action-ink);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
}

.site-action--inverse {
  --action-ink: #f4f5f5;
  --action-disc: #f4f5f5;
  --action-symbol: var(--black-layer);
}

.site-action__icon:not(.site-arrow) {
  display: inline-flex;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  color: var(--action-symbol);
  background: var(--action-disc);
  border: 1px solid var(--action-disc);
  border-radius: 50%;
  transition: background-color 240ms ease, color 240ms ease, border-color 240ms ease;
}

.site-action__icon:not(.site-arrow) svg {
  display: block;
  transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.site-action--quiet .site-action__icon:not(.site-arrow) {
  color: var(--action-ink);
  background: transparent;
  border-color: var(--metal);
}

.site-action:is(:hover, :focus-visible) .site-action__icon:not(.site-arrow) {
  color: var(--action-disc);
  background: transparent;
  border-color: var(--action-disc);
}

.site-action--quiet:is(:hover, :focus-visible) .site-action__icon:not(.site-arrow) {
  color: var(--action-symbol);
  background: var(--action-disc);
}

.site-action:focus-visible { outline: 2px solid var(--action-ink); outline-offset: 7px; }
.site-action:active { opacity: 0.75; }

@media (prefers-reduced-motion: reduce) {
  .site-action__icon, .site-action__icon svg { transition: none; }
  .site-action:is(:hover, :focus-visible) svg { transform: none; }
}

.hero-index {
  position: absolute;
  z-index: 3;
  right: 48px;
  bottom: 50%;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.hero-index span {
  width: 5px;
  height: 5px;
  background: rgba(255, 255, 255, 0.52);
}

.hero-index .is-active {
  height: 28px;
  background: var(--metal-light);
}

.scroll-cue {
  position: absolute;
  z-index: 3;
  right: 48px;
  bottom: 40px;
  display: flex;
  align-items: center;
  gap: 16px;
  color: #c6c6c6;
  font-size: 12px;
}

.scroll-cue .site-arrow { width: 30px; height: 30px; color: #e4e4e4; background: transparent; box-shadow: inset 0 0 0 1px #595d60; }
.scroll-cue .site-arrow svg { width: 16px; height: 16px; }
.scroll-cue:is(:hover, :focus-visible) .site-arrow { color: #161616; background: #f0f0f0; box-shadow: none; }

.section-light {
  color: var(--black-layer);
  background: var(--white);
}

.capabilities {
  padding: 128px 0 144px;
}

.section-heading,
.capability-layout,
.applications-intro,
.application-stage,
.about,
.contact,
.site-footer {
  width: var(--content);
  margin-right: auto;
  margin-left: auto;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 80px;
  align-items: end;
  margin-bottom: 72px;
}

.section-heading h2,
.applications h2,
.about h2,
.contact h2 {
  margin: 0;
  font-family: var(--display-font);
  font-size: clamp(40px, 4.8vw, 72px);
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.section-heading p {
  max-width: 45ch;
  margin: 0;
  color: var(--gray-70);
}

.capability-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(360px, 0.82fr);
  border-top: 1px solid var(--gray-20);
  border-bottom: 1px solid var(--gray-20);
}

.capability-feature {
  display: grid;
  min-height: 620px;
  grid-template-rows: 1fr auto;
  background: var(--gray-10);
  border-right: 1px solid var(--gray-20);
}

.feature-visual {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  background: #eceff4;
}

.feature-visual img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-visual figcaption {
  position: absolute;
  right: 16px;
  bottom: 16px;
  padding: 6px 9px;
  color: var(--gray-70);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--gray-20);
  font-size: 11px;
}

.feature-copy {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px 24px;
  padding: 32px;
  border-top: 1px solid var(--gray-20);
}

.feature-copy h3,
.capability-row h3,
.stage-copy h3 {
  margin: 0;
  font-size: 22px;
  font-weight: 500;
  line-height: 1.3;
}

.feature-copy p,
.capability-row p,
.stage-copy p {
  max-width: 48ch;
  margin: 0;
  color: var(--gray-70);
}

.feature-copy > span {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: start;
  padding: 4px 8px;
  color: var(--gray-70);
  border: 1px solid #a8a8a8;
  font-size: 12px;
}

.feature-link {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: start;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--metal-dark);
  font-size: 14px;
  font-weight: 600;
}

.capability-list {
  display: grid;
  grid-template-rows: 1fr 1fr 1fr;
}

.capability-row {
  display: flex;
  min-height: 190px;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 32px;
  border-bottom: 1px solid var(--gray-20);
  transition: background-color 180ms ease;
}

.capability-row:last-child {
  border-bottom: 0;
}

.capability-row:hover {
  background: var(--gray-10);
}

.capability-row p {
  margin-top: 14px;
}

.row-status {
  flex: 0 0 auto;
  color: var(--gray-70);
  font-size: 12px;
}

.row-link {
  flex: 0 0 auto;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--metal-dark);
  font-size: 14px;
  font-weight: 600;
}

.row-link-group {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 16px;
}

.row-link-group a {
  padding-bottom: 3px;
  border-bottom: 1px solid var(--metal-dark);
  font-size: 13px;
  font-weight: 600;
}

.capability-row--resource {
  color: var(--black-layer);
  background: var(--white);
}

.capability-row--resource:hover {
  background: var(--gray-10);
}

.capability-row--resource p {
  color: var(--gray-70);
}

.capability-row--resource a {
  flex: 0 0 auto;
  padding-bottom: 4px;
  color: var(--black-layer);
  border-bottom: 1px solid var(--metal-dark);
  font-size: 14px;
  font-weight: 600;
}

.product-center-cta {
  display: grid;
  width: var(--content);
  margin: 72px auto 0;
  padding: 48px;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 64px;
  align-items: end;
  background: var(--surface-mist);
  border-top: 4px solid var(--metal-dark);
}

.product-center-cta h3 {
  margin: 0;
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 400;
  letter-spacing: -0.025em;
}

.product-center-cta p {
  max-width: 58ch;
  margin: 14px 0 0;
  color: var(--gray-70);
}

.smart-lock-showcase {
  padding: 104px 0;
  color: var(--black-layer);
  background: var(--white);
  border-top: 1px solid var(--gray-20);
  scroll-margin-top: 88px;
}

.smart-lock-showcase__inner {
  display: grid;
  width: var(--content);
  margin: 0 auto;
  grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.5fr);
  gap: 64px;
  align-items: center;
}

.smart-lock-showcase__copy h2 {
  margin: 0;
  font-family: var(--display-font);
  font-size: clamp(40px, 4.8vw, 64px);
  font-weight: 300;
  line-height: 1.16;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.smart-lock-showcase__copy p {
  margin: 24px 0 0;
  color: var(--gray-70);
}

.smart-lock-showcase__copy .site-action { margin-top: 36px; }

.smart-lock-showcase__products {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.smart-lock-preview { min-width: 0; }
.smart-lock-preview figure { margin: 0; overflow: hidden; aspect-ratio: 1; }
.smart-lock-preview img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 420ms cubic-bezier(0.16, 1, 0.3, 1);
}

.smart-lock-preview > div {
  display: flex;
  min-height: 72px;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--gray-20);
}

.smart-lock-preview h3 { margin: 0; font-size: 18px; font-weight: 500; line-height: 1.4; }
.smart-lock-preview svg { flex-shrink: 0; }
.smart-lock-preview:focus-visible { outline-color: var(--black-layer); }

@media (hover: hover) {
  .smart-lock-preview:hover img { transform: scale(1.04); }
}

@media (max-width: 1056px) {
  .smart-lock-showcase__inner { grid-template-columns: minmax(0, 1fr); gap: 40px; }
}

@media (max-width: 760px) {
  .smart-lock-showcase { padding: 72px 0; scroll-margin-top: 72px; }
  .smart-lock-showcase__inner { width: calc(100% - 40px); }
  .smart-lock-showcase__products { gap: 24px; }
}

@media (max-width: 600px) {
  .smart-lock-showcase__products { grid-template-columns: minmax(0, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  .smart-lock-preview:hover img { transform: none; }
}

.applications {
  padding: 136px 0;
  color: var(--black-layer);
  background: var(--surface-mist);
  border-top: 1px solid #d8dad8;
}

.applications-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 80px;
  align-items: end;
}

.applications-intro p {
  max-width: 46ch;
  margin: 0;
  color: var(--gray-70);
}

.application-stage {
  position: relative;
  display: grid;
  min-height: 430px;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 80px;
  align-items: center;
  margin-top: 88px;
  padding: 64px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid #d8dad8;
}

.stage-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 34%;
  height: 4px;
  background: var(--metal-dark);
}

.stage-copy h3 {
  max-width: 16ch;
  font-size: 30px;
  font-weight: 400;
}

.stage-copy p {
  margin-top: 24px;
  color: var(--gray-70);
}

.stage-diagram {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 42px;
  align-items: center;
}

.stage-diagram::before {
  position: absolute;
  top: 50%;
  right: 10%;
  left: 10%;
  height: 1px;
  background: #b7babb;
  content: "";
}

.diagram-node {
  position: relative;
  z-index: 1;
  display: flex;
  aspect-ratio: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--black-layer);
  border: 1px solid #686d6f;
  transform: rotate(45deg);
}

.diagram-node span,
.diagram-node small {
  transform: rotate(-45deg);
}

.diagram-node span {
  font-size: 18px;
  font-weight: 600;
}

.diagram-node small {
  margin-top: 4px;
  color: #d5d7d8;
  font-size: 10px;
}

.diagram-node--active {
  background: var(--metal-dark);
  border-color: var(--metal-dark);
}

.diagram-node--active small {
  color: #eef0f0;
}

.about {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 120px;
  padding-top: 144px;
  padding-bottom: 144px;
  background: var(--surface-warm);
  box-shadow: 0 0 0 100vmax var(--surface-warm);
  clip-path: inset(0 -100vmax);
}

.about-copy {
  max-width: 64ch;
}

.about-copy p {
  color: var(--gray-70);
}

.about-copy .about-lead {
  margin-top: 0;
  color: var(--black-layer);
  font-size: 24px;
  line-height: 1.5;
}

.company-section {
  color: var(--black-layer);
  background: var(--white);
  scroll-margin-top: 88px;
}

.company-section--soft,
.company-contact {
  background: var(--surface-warm);
}

.company-layout {
  display: grid;
  width: var(--content);
  margin: 0 auto;
  padding: 104px 0;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(48px, 7vw, 120px);
}

.company-heading h2 {
  margin: 0;
  font-family: var(--display-font);
  font-size: clamp(40px, 4.8vw, 64px);
  font-weight: 300;
  line-height: 1.16;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.company-heading p { margin: 24px 0 0; color: var(--gray-70); }
.company-heading .site-action { margin-top: 36px; }


.company-copy p {
  max-width: 68ch;
  margin: 0 0 24px;
  color: var(--gray-70);
  line-height: 1.9;
}

.company-copy p:last-child { margin-bottom: 0; }
.company-copy .company-lead { color: var(--black-layer); font-size: 24px; line-height: 1.55; }

.company-equipment {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  margin: 32px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--gray-20);
  list-style: none;
}

.company-values {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 36px;
  margin: 0 0 32px;
  font-size: 28px;
  font-weight: 300;
}

.company-details { min-width: 0; font-style: normal; }
.company-details dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 36px; margin: 0; }
.company-details dt { margin-bottom: 8px; color: var(--gray-70); font-size: 13px; }
.company-details dd { margin: 0; font-size: 18px; overflow-wrap: anywhere; }
.company-details a:hover,
.company-details a:focus-visible { text-decoration: underline; text-underline-offset: 5px; }
.company-details__address { grid-column: 1 / -1; padding-top: 24px; border-top: 1px solid var(--gray-20); }

@media (max-width: 760px) {
  .company-section { scroll-margin-top: 72px; }
  .company-layout { grid-template-columns: 1fr; gap: 36px; padding: 72px 0; }
  .company-heading h2 { font-size: clamp(36px, 10.5vw, 50px); }
  .company-copy .company-lead { font-size: 21px; }
  .company-values { font-size: 23px; gap: 16px 24px; }
  .company-details dl { grid-template-columns: 1fr; gap: 24px; }
  .company-heading .site-action { margin-top: 24px; }
}

.contact {
  display: flex;
  min-height: 320px;
  align-items: flex-end;
  justify-content: space-between;
  gap: 64px;
  padding-top: 72px;
  padding-bottom: 72px;
  color: var(--black-layer);
  background: var(--surface-deep);
  box-shadow: 0 0 0 100vmax var(--surface-deep);
  clip-path: inset(0 -100vmax);
}

.contact-copy h2 {
  max-width: 18ch;
  font-size: clamp(38px, 4.4vw, 66px);
}

.contact-copy p {
  max-width: 52ch;
  margin: 28px 0 0;
  color: var(--gray-70);
}

.button--dark {
  min-width: 270px;
  color: var(--white);
  background: var(--black-layer);
}

.button--dark:hover {
  color: var(--white);
  background: var(--black);
}

.site-footer {
  display: flex;
  min-height: 150px;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  color: #c6c6c6;
  background: var(--black-layer);
  box-shadow: 0 0 0 100vmax var(--black-layer);
  clip-path: inset(0 -100vmax);
}

.site-footer div {
  display: flex;
  flex-direction: column;
}

.site-footer strong {
  color: var(--white);
  font-weight: 500;
}

.site-footer span,
.site-footer p {
  margin: 4px 0 0;
  font-size: 12px;
}

.site-footer--brand {
  padding-top: 32px;
  padding-bottom: 32px;
}

.footer-identity {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  gap: 18px;
}

.site-footer--brand .brand-mark { display: block; width: 38px; height: 36px; margin: 0; }
.site-footer--brand .footer-identity__copy {
  display: flex;
  min-width: 0;
  margin: 0;
  flex-direction: column;
  gap: 8px;
}

.footer-identity strong { font-size: 16px; line-height: 1.5; }
.site-footer--brand .footer-identity__copy > span {
  margin: 0;
  color: #a6abad;
  font-size: 10px;
  line-height: 1.4;
  letter-spacing: 0.16em;
}

.footer-navigation { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; }
.footer-navigation a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: #c6c6c6;
  font-size: 13px;
}
.footer-navigation a:hover { color: var(--white); }

.catalog-page {
  background: var(--white);
}

.catalog-hero {
  min-height: 400px;
  padding-top: 88px;
  color: var(--white);
  background: var(--black);
}

.catalog-hero__inner {
  display: grid;
  width: var(--content);
  min-height: 312px;
  margin: 0 auto;
  padding: 72px 0 56px;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.65fr);
  gap: 96px;
  align-items: end;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.catalog-hero h1 {
  margin: 0;
  font-family: var(--display-font);
  font-size: clamp(60px, 8vw, 108px);
  font-weight: 300;
  line-height: 0.96;
  letter-spacing: -0.04em;
}

.catalog-hero__inner > div {
  max-width: 46ch;
}

.catalog-hero p {
  margin: 0 0 32px;
  color: #d5d7d8;
  font-size: 18px;
}

.catalog-intro {
  display: grid;
  width: var(--content);
  margin: 0 auto;
  padding: 120px 0 96px;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 96px;
  align-items: end;
}

.catalog-intro h2,
.catalog-section h2,
.catalog-close h2 {
  margin: 0;
  font-family: var(--display-font);
  font-weight: 300;
  letter-spacing: -0.035em;
}

.catalog-intro h2 {
  max-width: 13ch;
  font-size: clamp(44px, 5.4vw, 76px);
  line-height: 1.08;
}

.catalog-intro p {
  max-width: 48ch;
  margin: 0;
  color: var(--gray-70);
}

.category-routes {
  width: var(--content);
  margin: 0 auto;
  border-top: 1px solid var(--black-layer);
}

.category-route {
  display: grid;
  min-height: 128px;
  padding: 28px 8px;
  grid-template-columns: minmax(230px, 0.65fr) minmax(320px, 1.35fr) auto;
  gap: 48px;
  align-items: center;
  border-bottom: 1px solid var(--gray-20);
  transition: background-color 180ms ease, padding 180ms ease;
}

.category-route:hover {
  padding-right: 20px;
  padding-left: 20px;
  background: var(--gray-10);
}

.category-route strong {
  font-size: 23px;
  font-weight: 500;
}

.category-route > span {
  color: var(--gray-70);
}

.category-route i {
  font-size: 22px;
  font-style: normal;
}

.catalog-close--wide {
  width: var(--content);
  margin-right: auto;
  margin-bottom: 144px;
  margin-left: auto;
}

.catalog-shell {
  display: grid;
  width: var(--content);
  margin: 0 auto;
  padding-bottom: 144px;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 96px;
  align-items: start;
}

.catalog-directory {
  position: sticky;
  top: 112px;
  border-top: 4px solid var(--metal-dark);
}

.catalog-directory > strong {
  display: block;
  padding: 24px 0 20px;
  font-size: 14px;
  font-weight: 600;
}

.catalog-directory nav {
  border-bottom: 1px solid var(--gray-20);
}

.catalog-directory a {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--gray-70);
  border-top: 1px solid var(--gray-20);
  font-size: 14px;
  transition: color 180ms ease, padding-left 180ms ease;
}

.catalog-directory a:hover {
  padding-left: 8px;
  color: var(--black-layer);
}

.catalog-section {
  padding-top: 56px;
  scroll-margin-top: 100px;
  border-top: 1px solid var(--black-layer);
}

.catalog-section + .catalog-section {
  margin-top: 112px;
}

.catalog-section > header {
  display: grid;
  margin-bottom: 48px;
  grid-template-columns: minmax(220px, 0.8fr) minmax(300px, 1.2fr);
  gap: 64px;
  align-items: start;
}

.catalog-section h2 {
  font-size: clamp(36px, 4vw, 56px);
  line-height: 1.08;
}

.catalog-section > header p {
  max-width: 48ch;
  margin: 4px 0 0;
  color: var(--gray-70);
}

.series-list,
.catalog-section--compact {
  border-bottom: 1px solid var(--gray-20);
}

.series-row {
  display: grid;
  min-height: 126px;
  padding: 28px 0;
  grid-template-columns: minmax(190px, 0.8fr) minmax(260px, 1.2fr) auto;
  gap: 40px;
  align-items: center;
  border-top: 1px solid var(--gray-20);
}

.series-row h3 {
  margin: 0;
  font-size: 21px;
  font-weight: 500;
  line-height: 1.3;
}

.series-row p {
  margin: 7px 0 0;
  color: var(--gray-50);
  font-size: 13px;
}

.variant-list {
  display: flex;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.variant-list li {
  min-width: 48px;
  padding: 5px 10px;
  color: var(--black-layer);
  background: var(--gray-10);
  border: 1px solid var(--gray-20);
  font-size: 13px;
  text-align: center;
}

.series-status,
.series-placeholder {
  justify-self: end;
  color: var(--gray-70);
  font-size: 12px;
  white-space: nowrap;
}

.series-placeholder {
  grid-column: 2 / -1;
}

.catalog-close {
  display: grid;
  margin-top: 128px;
  padding: 64px;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 64px;
  align-items: end;
  background: var(--surface-deep);
}

.catalog-close h2 {
  max-width: 15ch;
  font-size: clamp(36px, 4.2vw, 58px);
  line-height: 1.1;
}

.catalog-close p {
  max-width: 50ch;
  margin: 24px 0 0;
  color: var(--gray-70);
}

.category-page {
  background: var(--white);
}

.category-hero {
  min-height: 380px;
  padding-top: 88px;
  color: var(--white);
  background: var(--black);
}

.category-hero__inner {
  display: grid;
  width: var(--content);
  min-height: 292px;
  margin: 0 auto;
  padding: 64px 0 48px;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: 96px;
  align-items: end;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.category-hero h1 {
  margin: 0;
  font-family: var(--display-font);
  font-size: clamp(58px, 7vw, 96px);
  font-weight: 300;
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.category-hero__inner > div {
  max-width: 46ch;
}

.category-hero p {
  margin: 0 0 30px;
  color: #d5d7d8;
  font-size: 17px;
}

.category-content {
  width: var(--content);
  margin: 0 auto;
  padding: 120px 0 40px;
}

.product-record {
  border-top: 1px solid var(--black-layer);
}

.product-record + .product-record {
  margin-top: 104px;
}

.product-record > header {
  display: flex;
  min-height: 112px;
  padding: 24px 0;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.product-record h2 {
  margin: 0;
  font-family: var(--display-font);
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.product-record > header span {
  flex: 0 0 auto;
  color: var(--gray-70);
  font-size: 12px;
}

.product-record__body {
  padding: 36px 0 0;
  border-top: 1px solid var(--gray-20);
}

.confirmed-products {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.confirmed-products strong {
  font-size: 13px;
  font-weight: 600;
}

.product-facts {
  display: grid;
  margin: 36px 0 0;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--gray-20);
  border-bottom: 1px solid var(--gray-20);
}

.product-facts > div {
  min-height: 116px;
  padding: 22px;
  border-right: 1px solid var(--gray-20);
}

.product-facts > div:last-child {
  border-right: 0;
}

.product-facts dt {
  color: var(--gray-70);
  font-size: 12px;
}

.product-facts dd {
  margin: 12px 0 0;
  font-size: 15px;
}

.record-placeholder {
  max-width: 66ch;
  margin: 0;
  color: var(--gray-70);
}

.category-needs {
  display: grid;
  width: var(--content);
  margin: 96px auto 0;
  padding: 64px;
  grid-template-columns: minmax(260px, 0.85fr) minmax(360px, 1.15fr);
  gap: 80px;
  background: var(--surface-mist);
  border-top: 4px solid var(--metal-dark);
}

.category-needs h2 {
  margin: 0;
  font-size: clamp(30px, 3.6vw, 48px);
  font-weight: 300;
  line-height: 1.16;
  letter-spacing: -0.03em;
}

.category-needs ul {
  display: grid;
  margin: 0;
  padding: 0;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 32px;
  list-style: none;
}

.feature-visual--product {
  background: var(--white);
}

.feature-visual--product img {
  padding: 7%;
  object-fit: contain;
}

.category-routes--gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--gray-20);
  background: var(--gray-20);
}

.category-route-card {
  display: grid;
  min-width: 0;
  grid-template-rows: auto 1fr;
  color: var(--black-layer);
  background: var(--white);
  transition: background-color 180ms ease;
}

.category-route-card:hover,
.category-route-card:focus-visible {
  background: var(--gray-10);
}

.category-route-card figure {
  position: relative;
  aspect-ratio: 1.32;
  margin: 0;
  overflow: hidden;
  background: var(--white);
}

.category-route-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 8%;
  object-fit: contain;
  transition: transform 360ms cubic-bezier(0.16, 1, 0.3, 1);
}

.category-route-card:hover img,
.category-route-card:focus-visible img {
  transform: scale(1.04);
}

.category-route-card > div {
  display: grid;
  min-height: 104px;
  padding: 18px 22px;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 16px;
  align-items: center;
  border-top: 1px solid var(--gray-20);
}

.category-route-card strong {
  font-size: 18px;
  font-weight: 500;
}

.category-route-card span {
  grid-column: 1;
  color: var(--gray-70);
  font-size: 13px;
  line-height: 1.5;
}

.category-route-card i {
  grid-column: 2;
  grid-row: 1 / span 2;
  font-size: 21px;
  font-style: normal;
  transition: transform 180ms ease;
}

.category-route-card:hover i,
.category-route-card:focus-visible i {
  transform: translateX(5px);
}

.product-gallery {
  padding-top: 64px;
}

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

.model-grid--catalog .product-photo-card {
  display: block;
  width: 100%;
  padding: 0;
  color: var(--black-layer);
  text-align: left;
  font: inherit;
  cursor: zoom-in;
  border: 0;
  border-radius: 0;
  appearance: none;
}

.model-grid--catalog .product-photo-card figure {
  min-height: 0;
  aspect-ratio: 1.2;
}

.model-grid--catalog .product-photo-card > div {
  min-height: 82px;
  padding: 18px 18px;
}

.model-grid--catalog .product-photo-card h3 {
  font-size: 16px;
}

.model-grid--catalog .product-photo-card span {
  font-size: 12px;
}

.product-gallery + .product-gallery {
  padding-top: 40px;
}

@media (max-width: 1040px) {
  .model-grid--catalog {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (max-width: 760px) {
  .product-gallery {
    padding-top: 72px;
  }

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

  .model-grid--catalog .product-photo-card figure {
    aspect-ratio: 0.96;
  }

  .model-grid--catalog .product-photo-card > div {
    min-height: 72px;
    padding: 14px 12px;
  }

  .category-route-card > div {
    min-height: 90px;
    padding: 16px 14px;
  }

  .category-route-card strong {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .model-grid--catalog {
    grid-template-columns: 1fr;
  }

  .model-grid--catalog .product-photo-card figure {
    aspect-ratio: 1.25;
  }

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

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

.model-grid--triad {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

@media (max-width: 1040px) {
  .model-grid--catalog,
  .model-grid--triad {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (max-width: 760px) {
  .model-grid--catalog,
  .model-grid--triad,
  .model-grid--single {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .model-grid--catalog,
  .model-grid--triad,
  .model-grid--single {
    grid-template-columns: 1fr;
  }
}

/* Compact catalog: family -> independent subtype -> product detail. */
.catalog-v2 .category-hero,
.catalog-v2 .product-detail-hero {
  min-height: 300px;
}

.catalog-v2 .category-hero__inner,
.catalog-v2 .product-detail-hero__inner {
  min-height: 212px;
  grid-template-columns: minmax(0, 1fr);
  padding: 48px 0 40px;
  gap: 0;
}

.catalog-v2 .category-hero h1,
.catalog-v2 .product-detail-hero h1 {
  font-size: clamp(40px, 4.6vw, 68px);
  line-height: 1.15;
  overflow-wrap: anywhere;
}

.catalog-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  width: var(--content);
  min-height: 64px;
  margin: 0 auto;
  padding: 16px 0;
  gap: 8px 16px;
  align-items: center;
  color: var(--gray-70);
  font-size: 14px;
  border-bottom: 1px solid var(--gray-20);
}

.catalog-breadcrumb a {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
}

.catalog-breadcrumb a:hover {
  color: var(--black-layer);
  text-decoration: underline;
  text-underline-offset: 5px;
}

.catalog-v2 .model-collection {
  margin-top: 0;
  padding-top: 32px;
  padding-bottom: 64px;
}

.catalog-v2 .catalog-product-grid,
.family-directory {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--white);
}

.catalog-v2 .model-card figure {
  min-height: 0;
  aspect-ratio: 4 / 3;
}

.catalog-v2 .model-card img {
  padding: 6%;
}

.catalog-v2 .model-card > div {
  min-height: 80px;
  padding: 20px;
  gap: 8px 16px;
}

.catalog-v2 .model-card :is(h2, h3) {
  font-size: 18px;
  line-height: 1.4;
}

.family-directory {
  width: var(--content);
  margin: 48px auto 80px;
  gap: 48px 32px;
}

.family-card {
  min-width: 0;
  background: var(--white);
}

.family-card__primary {
  display: block;
}

.family-card figure {
  margin: 0;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 12px;
}

.family-card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 420ms cubic-bezier(0.16, 1, 0.3, 1);
}

.family-card__primary:is(:hover, :focus-visible) img {
  transform: scale(1.045);
}

.family-card__primary > div {
  display: flex;
  min-height: 64px;
  margin-top: 12px;
  padding: 0;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
}

.family-card h2 {
  margin: 0;
  font-size: 22px;
  font-weight: 500;
  line-height: 1.4;
}

.family-card__subcategories {
  display: flex;
  flex-direction: column;
  margin-top: 12px;
  padding: 0;
  gap: 4px;
}

.family-card__subcategories a {
  display: flex;
  min-height: 44px;
  padding: 0 8px;
  align-items: center;
  gap: 12px;
  color: var(--gray-70);
  font-size: 14px;
  line-height: 1.5;
  justify-content: space-between;
  border-radius: 8px;
  transition: background 150ms, color 150ms;
}

.family-card__subcategories a::after {
  content: none;
}

.family-card__subcategories a:is(:hover, :focus-visible) {
  color: var(--black-layer);
  background: #f5f5f7;
}
.family-card__primary:is(:hover, :focus-visible) .catalog-arrow { background: #161616; color: #fff; }
.family-card__subcategories .catalog-arrow { width: 24px; height: 24px; color: var(--gray-70); background: transparent; }
.family-card__subcategories .catalog-arrow svg { width: 16px; height: 16px; transform: none; }
.family-card__subcategories a:is(:hover, :focus-visible) .catalog-arrow { color: #fff; background: #161616; }
.family-card__subcategories a:is(:hover, :focus-visible) .catalog-arrow svg { transform: rotate(-45deg); }
.family-directory ::selection { color: #161616; background: #e2e4e2; }

.catalog-v2 main a:focus-visible,
.catalog-v2 main button:focus-visible {
  outline: 2px solid var(--gray-70);
  outline-offset: 3px;
}

.catalog-v2 .brand-copy > span,
.catalog-v2 .footer-identity__copy > span {
  font-size: 11px;
}

.catalog-v2 .product-stage,
.catalog-v2 .product-stage img {
  min-height: 0;
  height: 480px;
}

.catalog-v2 .product-viewer--single .product-viewer__visual {
  max-width: 720px;
  margin-left: 0;
}

.product-specs,
.product-inquiry {
  width: var(--content);
  margin: 0 auto;
}

.product-specs {
  padding: 40px 0 64px;
  border-top: 1px solid var(--gray-20);
}

.product-specs h2 {
  margin: 0 0 32px;
  font-size: 32px;
  font-weight: 300;
}

.product-specs dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  gap: 0 48px;
  border-top: 1px solid var(--gray-20);
}

.product-specs dl > div {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  padding: 20px 0;
  gap: 16px;
  border-bottom: 1px solid var(--gray-20);
  align-content: start;
}

.product-specs dt {
  color: var(--gray-70);
  font-size: 14px;
}

.product-specs dd {
  margin: 0;
  font-size: 15px;
  overflow-wrap: anywhere;
}

.product-inquiry {
  display: flex;
  padding: 24px 0 64px;
  gap: 16px 40px;
  flex-wrap: wrap;
}

.product-inquiry a {
  display: inline-flex;
  min-height: 44px;
  gap: 16px;
  align-items: center;
  text-decoration: underline;
  text-underline-offset: 6px;
}

@media (max-width: 1056px) {
  .catalog-v2 .catalog-product-grid,
  .family-directory {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .product-specs dl { grid-template-columns: 1fr; }
  .family-directory { gap: 40px 24px; }
  .product-dropdown__body { grid-template-columns: 200px minmax(0, 1fr); gap: 24px; }
  .site-nav .product-dropdown .product-dropdown__preview { display: none; }
}

@media (max-width: 760px) {
  .catalog-v2 .category-hero,
  .catalog-v2 .product-detail-hero { min-height: 240px; padding-top: 72px; }
  .catalog-v2 .category-hero__inner,
  .catalog-v2 .product-detail-hero__inner { min-height: 168px; padding: 32px 0; }
  .catalog-v2 .catalog-product-grid,
  .family-directory { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog-v2 .model-card > div { padding: 16px; }
  .catalog-v2 .model-card :is(h2, h3) { font-size: 16px; }
  .family-directory { gap: 36px 20px; margin-top: 32px; margin-bottom: 56px; }
  .family-card__primary > div { min-height: 56px; margin-top: 4px; gap: 8px; }
  .family-card h2 { font-size: 18px; }
  .family-card__primary .catalog-arrow { width: 30px; height: 30px; }
  .family-card__primary .catalog-arrow svg { width: 16px; height: 16px; }
  .family-card__subcategories a { min-height: 44px; padding: 0 4px; gap: 8px; font-size: 13px; }
  .family-card__subcategories .catalog-arrow { width: 20px; height: 20px; }
  .catalog-v2 .product-stage,
  .catalog-v2 .product-stage img { height: 320px; }
  .product-specs dl > div { grid-template-columns: 96px minmax(0, 1fr); gap: 12px; }
  .product-specs { padding-top: 32px; }
}

@media (max-width: 420px) {
  .catalog-v2 .model-card > div { gap: 8px; padding: 12px; }
  .catalog-v2 .model-card :is(h2, h3) { font-size: 15px; }
}

@media (max-width: 760px) {
  body.catalog-v2 .site-header { padding-left: 12px; padding-right: 100px; }
  body.catalog-v2 .header-start { width: 100%; min-width: 0; gap: 8px; }
  body.catalog-v2 .brand { min-width: 0; gap: 8px; }
  body.catalog-v2 .brand-mark { width: 30px; height: 28px; }
  body.catalog-v2 .brand-copy { min-width: 0; }
  body.catalog-v2 .brand-copy strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
  body.catalog-v2 .brand-copy span { display: none; }
  body.catalog-v2 .menu-button { position: absolute; top: 14px; right: 20px; }
}

/* User-selected A: obsidian product stage, with live type and a native entry link. */
.portal-page {
  min-width: 320px;
  background: var(--black);
}

.portal {
  position: relative;
  display: grid;
  min-height: max(640px, 100svh);
  overflow: hidden;
  grid-template-rows: auto 1fr;
  color: #f7f7f5;
  background: #0b0c0e;
  isolation: isolate;
}

.portal-media,
.portal-shade {
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
}

.portal-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.portal-shade {
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.12), transparent 25%, transparent 75%, rgba(0, 0, 0, 0.5));
}

.portal-header {
  display: flex;
  width: calc(100% - 96px);
  align-items: center;
  justify-content: space-between;
  margin-inline: auto;
}

.portal-header {
  min-height: 110px;
  gap: 24px;
}

.portal-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.portal-brand .brand-copy strong {
  font-family: "Noto Serif SC", "Songti SC", "SimSun", serif;
  font-size: 26px;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.portal-brand .brand-copy span {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.13em;
}

.portal-header .language-switch {
  margin-left: auto;
}

.portal-content {
  display: flex;
  width: min(76%, 1100px);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  align-self: center;
  justify-self: center;
  padding: 0 0 16svh;
  text-align: center;
  transform: translateX(4vw);
}

.portal-content h1 {
  margin: 0;
  font-family: "Noto Serif SC", "Songti SC", "SimSun", serif;
  font-size: clamp(48px, 5.4vw, 92px);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: 0.015em;
}

.portal-content h1 span {
  white-space: nowrap;
}

html[lang="en"] .portal-content h1 span + span::before {
  content: " ";
  white-space: pre;
}

.portal-content p {
  margin: 24px 0 44px;
  color: #c6c8ca;
  font-size: clamp(14px, 1.5vw, 22px);
  letter-spacing: 0.25em;
}

.portal-enter {
  position: relative;
  display: inline-flex;
  width: 274px;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  padding: 0 8px 17px;
  color: #f5f6f7;
  background: transparent;
  border: 0;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.portal-enter::before {
  content: "";
  position: absolute;
  left: 8px;
  right: 0;
  bottom: 3px;
  height: 1px;
  background: linear-gradient(90deg, #818e98, #e2eaf0 74%, transparent);
  pointer-events: none;
  transition: opacity 240ms ease;
}

.portal-enter::after {
  content: "";
  position: absolute;
  left: 22%;
  bottom: 2px;
  width: 44px;
  height: 3px;
  background: linear-gradient(90deg, transparent, #f1faff, transparent);
  pointer-events: none;
}

.portal-enter.is-motion-active::after {
  animation: portal-rail-flow 5s ease-in-out infinite alternate;
}

@keyframes portal-rail-flow {
  to { transform: translateX(153px); }
}

.portal-enter:hover::before,
.portal-enter:focus-visible::before {
  opacity: 0.75;
}

.portal-enter:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 12px;
}

.portal-enter:active {
  opacity: 0.75;
}

.portal-enter__arrow.site-arrow { width: 42px; height: 42px; color: #161616; background: #f0f0f0; }

.portal-enter:hover .portal-enter__arrow,
.portal-enter:focus-visible .portal-enter__arrow {
  color: #fff;
  background: #35383b;
}

@media (prefers-reduced-motion: reduce) {
  .portal-enter.is-motion-active::after { animation: none; }
  .portal-enter:is(:hover, :focus-visible) .portal-enter__arrow { transition: none; transform: none; }
}

@media (max-width: 760px) {
  .portal { min-height: max(700px, 100svh); }
  .portal-header { width: calc(100% - 48px); }
  .portal-header { min-height: 100px; }
  .portal-media img { object-position: center bottom; }
  .portal-content {
    width: calc(100% - 40px);
    align-self: start;
    margin-top: clamp(20px, 4svh, 48px);
    padding: 0 0 260px;
    transform: none;
  }
  .portal-content h1 { font-size: clamp(42px, 8vw, 64px); line-height: 1.28; }
  .portal-content h1 span { display: block; }
  html[lang="en"] .portal-content h1 span + span::before { content: none; }
  .portal-content p { margin: 22px 0 32px; font-size: 13px; letter-spacing: 0.12em; }
  .portal-enter { font-size: 16px; }
  html[lang="en"] .portal-brand .brand-copy strong { font-size: 17px; letter-spacing: 0.02em; }
}

@media (max-width: 440px) {
  .portal-header { min-height: 92px; }
  .portal-brand .brand-mark { width: 34px; height: 30px; }
  .portal-brand .brand-copy strong { font-size: 22px; }
  .portal-brand .brand-copy span { font-size: 9px; }
  html[lang="en"] .portal-brand .brand-copy strong { font-size: 14px; }
  .portal-header .language-switch { gap: 5px; }
  .portal-header .language-switch a { font-size: 11px; }
  .portal-header .language-switch a:first-child { font-size: 0; }
  .portal-header .language-switch a:first-child::after { content: "中文"; font-size: 11px; }
  .portal-content h1 { font-size: clamp(40px, 11vw, 48px); }
  .portal-content p { font-size: 12px; letter-spacing: 0.08em; }
}

@media (min-width: 761px) and (max-aspect-ratio: 4/3) {
  .portal-media img { object-fit: contain; object-position: center bottom; }
  .portal-content { width: calc(100% - 64px); transform: none; padding-bottom: 22svh; }
}

.category-needs li {
  padding: 13px 0;
  border-bottom: 1px solid #cfd2cf;
  color: var(--gray-70);
  font-size: 14px;
}

.sibling-directory {
  display: grid;
  width: var(--content);
  margin: 80px auto 144px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--black-layer);
  border-bottom: 1px solid var(--black-layer);
}

.sibling-directory a {
  display: flex;
  min-height: 96px;
  padding: 24px;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  font-weight: 600;
  transition: background-color 180ms ease;
}

.sibling-directory a:first-child {
  border-right: 1px solid var(--gray-20);
}

.sibling-directory a:hover {
  background: var(--gray-10);
}

.model-collection {
  width: var(--content);
  margin: 0 auto;
  padding: 80px 0 40px;
}

.model-collection__heading {
  display: grid;
  margin-bottom: 40px;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 80px;
  align-items: end;
}

.model-collection__heading h2 {
  margin: 0;
  font-family: var(--display-font);
  font-size: clamp(44px, 5.4vw, 76px);
  font-weight: 300;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.model-collection__heading p {
  max-width: 52ch;
  margin: 0;
  color: var(--gray-70);
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--white);
  border: 1px solid var(--gray-20);
}

.model-card {
  min-width: 0;
  background: var(--white);
  outline: 1px solid var(--gray-20);
}

.model-card--wide {
  grid-column: 1 / -1;
}

.model-card figure {
  position: relative;
  min-height: 360px;
  margin: 0;
  overflow: hidden;
  background: var(--white);
}

.model-card--wide figure {
  min-height: 520px;
}

.model-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 420ms cubic-bezier(0.16, 1, 0.3, 1);
}

.model-card:hover img,
.model-card:focus-visible img {
  transform: scale(1.045);
}

.model-card > div {
  display: grid;
  min-height: 88px;
  padding: 26px 28px;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 24px;
  align-items: center;
  border-top: 1px solid var(--gray-20);
}

.model-card :is(h2, h3) {
  margin: 0;
  font-size: 21px;
  font-weight: 500;
}

.model-card span {
  color: var(--gray-70);
  font-size: 13px;
}


.model-pending {
  display: flex;
  min-height: 76px;
  margin: 1px 0 0;
  padding: 20px 24px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--gray-20);
  border-bottom: 1px solid var(--gray-20);
}

.model-pending span {
  color: var(--gray-70);
  font-size: 13px;
}

.collection-progress {
  display: grid;
  width: var(--content);
  margin: 96px auto 0;
  padding: 64px;
  grid-template-columns: minmax(260px, 0.8fr) minmax(360px, 1.2fr);
  gap: 80px;
  background: var(--surface-mist);
  border-top: 4px solid var(--metal-dark);
}

.collection-progress h2 {
  margin: 0;
  font-size: clamp(30px, 3.6vw, 48px);
  font-weight: 300;
  line-height: 1.16;
  letter-spacing: -0.03em;
}

.collection-progress p {
  max-width: 52ch;
  margin: 0;
  color: var(--gray-70);
}

.product-detail-hero {
  min-height: 340px;
  padding-top: 88px;
  color: var(--white);
  background: var(--black);
}

.product-detail-hero__inner {
  display: grid;
  width: var(--content);
  min-height: 252px;
  margin: 0 auto;
  padding: 56px 0 40px;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: 96px;
  align-items: end;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.product-detail-hero h1 {
  margin: 0;
  font-family: var(--display-font);
  font-size: clamp(56px, 7vw, 92px);
  font-weight: 300;
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.product-detail-hero p {
  max-width: 45ch;
  margin: 0;
  color: #d5d7d8;
  font-size: 17px;
}

.product-viewer {
  position: relative;
  display: grid;
  width: var(--content);
  margin: 0 auto;
  padding: 64px 0 48px;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.55fr);
  gap: 72px;
  align-items: start;
}

.product-viewer--single {
  display: block;
}

.product-viewer--single .product-viewer__visual {
  max-width: 980px;
  margin: 0 auto;
}

.product-stage {
  position: relative;
  display: block;
  width: 100%;
  min-height: 620px;
  padding: 0;
  cursor: zoom-in;
  color: var(--black-layer);
  background: var(--white);
  border: 1px solid var(--gray-20);
  font: inherit;
  overflow: hidden;
}

.product-stage img {
  display: block;
  width: 100%;
  height: 620px;
  object-fit: contain;
  padding: 24px 24px 80px;
  transition: transform 420ms cubic-bezier(0.16, 1, 0.3, 1);
}

.product-stage:hover img,
.product-stage:focus-visible img {
  transform: scale(1.035);
}

.product-stage > span {
  position: absolute;
  right: 20px;
  bottom: 20px;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 20px;
  padding: 0 16px;
  color: var(--white);
  background: rgba(22, 22, 22, 0.9);
  font-size: 13px;
  font-weight: 600;
}

.product-stage i {
  font-style: normal;
}

.product-viewer__controls {
  position: sticky;
  top: 120px;
  padding-top: 24px;
  border-top: 1px solid var(--black-layer);
}

.product-viewer__controls h2 {
  margin: 0;
  font-size: clamp(30px, 3vw, 42px);
  font-weight: 300;
  letter-spacing: -0.03em;
}

.product-viewer__controls > p {
  margin: 16px 0 0;
  color: var(--gray-70);
}

.color-options {
  display: grid;
  margin-top: 32px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--gray-20);
  border-left: 1px solid var(--gray-20);
}

.color-option {
  display: flex;
  min-height: 58px;
  align-items: center;
  gap: 12px;
  padding: 0 14px;
  cursor: pointer;
  color: var(--black-layer);
  background: var(--white);
  border: 0;
  border-right: 1px solid var(--gray-20);
  border-bottom: 1px solid var(--gray-20);
  font: inherit;
  font-size: 13px;
  transition: background-color 180ms ease, color 180ms ease;
}

.color-option:hover {
  background: var(--gray-10);
}

.color-option[aria-pressed="true"] {
  color: var(--white);
  background: var(--black-layer);
}

.color-option > span[aria-hidden="true"] {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  background: var(--swatch);
  border: 1px solid rgba(82, 82, 82, 0.45);
}

.product-viewer__controls .product-source-note {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--gray-20);
  font-size: 12px;
}

.product-lightbox {
  width: min(92vw, 1400px);
  height: min(90vh, 920px);
  padding: 64px;
  background: var(--white);
  border: 0;
  overflow: hidden;
}

.product-lightbox::backdrop {
  background: rgba(11, 12, 14, 0.9);
  backdrop-filter: blur(8px);
}

.product-lightbox > button {
  position: absolute;
  z-index: 1;
  top: 20px;
  right: 20px;
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 18px;
  padding: 0 14px;
  cursor: pointer;
  color: var(--white);
  background: var(--black-layer);
  border: 0;
  font: inherit;
  font-size: 13px;
}

.product-lightbox > button span {
  font-size: 24px;
  font-weight: 300;
}

.product-lightbox img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.model-directory {
  margin-top: 40px;
}

@keyframes hero-arrive {
  from {
    opacity: 0.35;
    transform: scale(1.025);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@media (max-width: 1056px) {
  :root {
    --content: min(100% - 48px, 960px);
  }

  .site-header {
    padding: 0 24px;
  }

  .site-nav a {
    padding: 0 12px;
  }

  .hero-media {
    object-position: 60% center;
  }

  .hero-shade {
    background: rgba(0, 0, 0, 0.3);
  }

  .hero h1 {
    max-width: 680px;
  }

  .section-heading,
  .applications-intro {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .capability-layout {
    grid-template-columns: 1fr;
  }

  .capability-feature {
    border-right: 0;
    border-bottom: 1px solid var(--gray-20);
  }

  .application-stage {
    grid-template-columns: 1fr;
  }

  .stage-copy h3 {
    max-width: 24ch;
  }

  .about {
    gap: 64px;
  }

  .catalog-hero__inner,
  .catalog-intro,
  .category-hero__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

  .model-collection__heading,
  .collection-progress,
  .product-detail-hero__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .product-viewer {
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
    gap: 48px;
  }

  .catalog-shell {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 48px;
  }

  .catalog-section > header,
  .series-row {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .series-status,
  .series-placeholder {
    grid-column: auto;
    justify-self: start;
  }
}

@media (max-width: 760px) {
  :root {
    --content: calc(100% - 40px);
  }

  .site-header {
    height: 72px;
    padding: 0 20px;
  }

  .brand-mark {
    width: 34px;
    height: 30px;
  }

  .header-start {
    gap: 12px;
  }

  .header-back {
    min-width: 44px;
    justify-content: center;
  }

  .product-detail-page .site-header {
    padding-right: 76px;
    padding-left: 12px;
  }

  .product-detail-page .header-start {
    width: 100%;
    min-width: 0;
    gap: 8px;
  }

  .product-detail-page .brand {
    min-width: 0;
    gap: 8px;
  }

  .product-detail-page .brand-copy strong {
    white-space: nowrap;
  }

  .product-detail-page .brand-mark {
    width: 30px;
    height: 28px;
  }

  .product-detail-page .brand-copy span {
    display: none;
  }

  .product-detail-page .menu-button {
    position: absolute;
    top: 14px;
    right: 12px;
  }

  .brand-copy strong {
    font-size: 15px;
  }

  .brand-copy span {
    font-size: 8px;
  }

  .menu-button {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    gap: 12px;
    padding: 0;
    font: inherit;
    font-size: 13px;
  }

  .menu-button__icon {
    display: flex;
    width: 28px;
    height: 24px;
    flex-direction: column;
    justify-content: center;
    gap: 7px;
  }

  .menu-button__icon i {
    display: block;
    width: 100%;
    height: 1px;
    background: currentColor;
    transition: transform 180ms ease;
  }

  .menu-button[aria-expanded="true"] .menu-button__icon i:first-child {
    transform: translateY(4px) rotate(45deg);
  }

  .menu-button[aria-expanded="true"] .menu-button__icon i:last-child {
    transform: translateY(-4px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    z-index: 1;
    top: 72px;
    right: 0;
    bottom: auto;
    left: 0;
    display: none;
    width: 100%;
    height: calc(100dvh - 72px);
    padding: 32px 20px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--black-layer);
    overflow-y: auto;
  }

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

  .site-nav .language-switch {
    min-height: 64px;
    order: -1;
    margin: 0 0 8px;
    gap: 16px;
    border-bottom: 1px solid #393939;
  }

  html[lang="en"] .hero h1 {
    font-size: clamp(40px, 9vw, 58px);
  }

  .site-nav .language-switch a {
    font-size: 15px;
  }

  .site-nav a,
  .site-nav .nav-contact {
    height: 64px;
    margin: 0;
    padding: 0;
    border-bottom: 1px solid #393939;
    font-size: 18px;
  }

  .site-nav .nav-contact {
    margin-top: 24px;
    padding: 0 20px;
    border: 0;
  }

  .nav-products {
    width: 100%;
    height: auto;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 44px;
    align-items: stretch;
  }

  .site-nav .nav-products > a {
    height: 64px;
  }

  .product-menu-toggle { align-self: center; margin: 0; }
  .product-dropdown-hit {
    position: static;
    grid-column: 1 / -1;
    display: none;
    width: 100%;
    padding-top: 8px;
  }
  .nav-products.is-product-open .product-dropdown-hit { display: block; }
  .product-dropdown {
    width: 100%;
    max-height: none;
    overflow: visible;
    color: var(--white);
    background: var(--catalog-panel);
    border: 0;
    box-shadow: none;
  }

  .nav-products.is-product-open .product-dropdown {
    transform: none;
  }

  .product-dropdown__head { min-height: 76px; padding: 16px 16px 12px; gap: 8px; }
  .product-dropdown__head > span { display: block; font-size: 18px; }
  .product-dropdown__actions { gap: 8px; }
  .site-nav .product-dropdown__head a { min-height: 44px; font-size: 13px; gap: 8px; }
  .product-dropdown__head .catalog-arrow { width: 30px; height: 30px; }
  .product-dropdown__close { width: 36px; height: 44px; }
  .product-dropdown__body { display: block; padding: 0 12px 20px; }
  .product-dropdown__categories { display: flex; flex-wrap: wrap; padding-bottom: 16px; gap: 8px 4px; }
  .product-dropdown__marker { display: none; }
  .site-nav .product-dropdown .product-dropdown__category { min-height: 44px; padding: 0 12px; font-size: 14px; background: rgba(255, 255, 255, 0.04); }
  .site-nav .product-dropdown .product-dropdown__category.is-active { background: #f0f0f0; color: #161616; }
  .product-dropdown__category svg { display: none; }
  .product-dropdown__panels { padding: 12px 0 0; }
  .product-dropdown__panel { display: none; padding: 0; border: 0; }
  .product-dropdown__panel.is-active { display: block; }
  .product-dropdown__panel h3 { margin: 0 4px 16px; }
  .site-nav .product-dropdown__panel h3 a { font-size: 28px; }
  .product-dropdown__subcategories { grid-template-columns: 1fr; gap: 4px; }
  .site-nav .product-dropdown__subcategories a { min-height: 48px; font-size: 14px; }
  [data-subcategory-target] { scroll-margin-top: 96px; }

  .hero {
    min-height: 720px;
  }

  .hero-media {
    top: -4%;
    left: 0;
    width: 155%;
    height: 74%;
    object-fit: cover;
    object-position: 64% center;
    opacity: 0.78;
  }

  .hero-shade {
    background: rgba(0, 0, 0, 0.34);
  }

  .hero-content {
    padding-top: 210px;
    padding-bottom: 80px;
    justify-content: flex-end;
  }

  .concept-note {
    top: 96px;
    right: auto;
    left: 0;
  }

  .hero h1 {
    font-size: clamp(44px, 13vw, 64px);
  }

  .title-tail {
    display: block;
  }

  html[lang="en"] .title-tail::before {
    content: none;
  }

  .hero-summary {
    margin-top: 22px;
    font-size: 16px;
  }

  .hero-actions {
    width: 100%;
    margin-top: 30px;
    flex-direction: column;
    align-items: stretch;
    gap: 20px;
  }

  .button--primary {
    width: 100%;
  }

  .text-link {
    align-self: flex-start;
  }

  .hero-index,
  .scroll-cue {
    display: none;
  }

  .capabilities,
  .applications {
    padding-top: 88px;
    padding-bottom: 96px;
  }

  .section-heading {
    margin-bottom: 48px;
  }

  .section-heading h2,
  .applications h2,
  .about h2,
  .contact h2 {
    font-size: clamp(36px, 10.5vw, 50px);
  }

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

  .feature-visual {
    min-height: 330px;
  }

  .feature-copy {
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .feature-copy > span {
    grid-column: 1;
    grid-row: auto;
    justify-self: start;
  }

  .feature-link {
    grid-column: 1;
    grid-row: auto;
    justify-self: start;
  }

  .capability-row {
    min-height: 0;
    padding: 28px 24px;
    flex-direction: column;
  }

  .row-link-group {
    justify-content: flex-start;
  }

  .product-center-cta {
    margin-top: 48px;
    padding: 36px 24px;
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .product-center-cta .button {
    width: 100%;
  }

  .application-stage {
    min-height: 0;
    gap: 64px;
    margin-top: 56px;
    padding: 48px 24px 64px;
  }

  .stage-diagram {
    gap: 18px;
  }

  .diagram-node span {
    font-size: 14px;
  }

  .diagram-node small {
    display: none;
  }

  .about {
    grid-template-columns: 1fr;
    gap: 48px;
    padding-top: 96px;
    padding-bottom: 96px;
  }

  .about-copy .about-lead {
    font-size: 21px;
  }

  .contact {
    min-height: 440px;
    align-items: stretch;
    padding-top: 72px;
    padding-bottom: 72px;
    flex-direction: column;
  }

  .button--dark {
    width: 100%;
  }

  .site-footer {
    min-height: 210px;
    align-items: flex-start;
    justify-content: center;
    flex-direction: column;
    gap: 24px;
  }

  .catalog-hero {
    min-height: 360px;
    padding-top: 72px;
  }

  .catalog-hero__inner {
    min-height: 288px;
    padding: 60px 0 40px;
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .catalog-hero h1 {
    font-size: clamp(58px, 20vw, 78px);
  }

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

  .catalog-intro {
    padding: 88px 0 72px;
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .catalog-intro h2 {
    font-size: clamp(40px, 12vw, 52px);
  }

  .category-route {
    min-height: 0;
    padding: 24px 0;
    grid-template-columns: 1fr auto;
    gap: 10px 24px;
  }

  .category-route:hover {
    padding-right: 12px;
    padding-left: 12px;
  }

  .category-route strong {
    font-size: 20px;
  }

  .category-route > span {
    grid-column: 1;
    font-size: 13px;
  }

  .category-route i {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .catalog-shell {
    padding-bottom: 96px;
    grid-template-columns: 1fr;
    gap: 88px;
  }

  .catalog-directory {
    position: static;
  }

  .catalog-directory a {
    min-height: 56px;
  }

  .catalog-section {
    padding-top: 40px;
    scroll-margin-top: 80px;
  }

  .catalog-section + .catalog-section {
    margin-top: 88px;
  }

  .catalog-section > header {
    margin-bottom: 36px;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .catalog-section h2 {
    font-size: 38px;
  }

  .series-row {
    min-height: 0;
    padding: 28px 0;
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .series-status,
  .series-placeholder {
    grid-column: auto;
    justify-self: start;
    white-space: normal;
  }

  .catalog-close {
    margin-top: 96px;
    padding: 40px 24px;
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .catalog-close .button {
    width: 100%;
    min-width: 0;
  }

  .catalog-close--wide {
    margin-bottom: 96px;
  }

  .category-hero {
    min-height: 340px;
    padding-top: 72px;
  }

  .category-hero__inner {
    min-height: 268px;
    padding: 52px 0 36px;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .category-hero h1 {
    font-size: clamp(54px, 17vw, 72px);
  }

  .category-content {
    padding-top: 88px;
  }

  .product-record + .product-record {
    margin-top: 80px;
  }

  .product-record > header {
    min-height: 0;
    padding: 24px 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .product-record__body {
    padding-top: 28px;
  }

  .confirmed-products {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .product-facts > div:nth-child(2n) {
    border-right: 0;
  }

  .product-facts > div:nth-last-child(-n + 2) {
    border-top: 1px solid var(--gray-20);
  }

  .category-needs {
    margin-top: 72px;
    padding: 40px 24px;
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .model-collection {
    padding-top: 64px;
  }

  .model-collection__heading {
    margin-bottom: 48px;
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .model-pending {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .model-card--wide {
    grid-column: auto;
  }

  .model-card figure,
  .model-card--wide figure {
    min-height: 300px;
  }

  .model-card > div {
    min-height: 88px;
    padding: 22px 20px;
  }

  .collection-progress {
    margin-top: 72px;
    padding: 40px 24px;
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .product-detail-hero {
    min-height: 300px;
    padding-top: 72px;
  }

  .product-detail-hero__inner {
    min-height: 228px;
    padding: 48px 0 36px;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .product-detail-hero h1 {
    font-size: clamp(48px, 15vw, 68px);
  }

  .product-viewer {
    padding-top: 48px;
    grid-template-columns: 1fr;
    gap: 56px;
  }

  .product-stage,
  .product-stage img {
    min-height: 0;
    height: 400px;
  }

  .product-viewer__controls {
    position: static;
    top: auto;
  }

  .product-lightbox {
    width: 100vw;
    height: 100dvh;
    max-width: none;
    max-height: none;
    margin: 0;
    padding: 56px 16px 16px;
  }

  .category-needs ul {
    grid-template-columns: 1fr;
  }

  .sibling-directory {
    margin-top: 64px;
    margin-bottom: 96px;
    grid-template-columns: 1fr;
  }

  .sibling-directory a {
    min-height: 76px;
  }

  .sibling-directory a:first-child {
    border-right: 0;
    border-bottom: 1px solid var(--gray-20);
  }

}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .product-dropdown,
  .nav-products.is-product-open .product-dropdown,
  .catalog-arrow svg,
  .product-dropdown__category svg,
  .family-card__primary:is(:hover, :focus-visible) img { transform: none !important; }
  .site-arrow svg { transform: rotate(var(--arrow-rest)) !important; }
  .product-dropdown__marker { transition: none; }
}

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

.model-grid--triad {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

@media (max-width: 1040px) {
  .model-grid--catalog,
  .model-grid--triad {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .model-grid--catalog,
  .model-grid--triad,
  .model-grid--single {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .model-grid--catalog,
  .model-grid--triad,
  .model-grid--single {
    grid-template-columns: 1fr;
  }
}

/* A standalone photo has its own parameter block, without a selector column. */
.product-variant-detail :is(.product-viewer, .product-specs, .product-inquiry, .catalog-breadcrumb) {
  width: min(var(--content), 980px);
}
.catalog-v2.product-variant-detail .product-viewer--single .product-viewer__visual {
  max-width: none;
  margin: 0;
}
.product-variant-detail [data-product-attribute] dd { font-weight: 500; }

/* Same content and visual system; small-screen composition only. */
@media (max-width: 760px) {
  :root { --content: calc(100% - 32px); }
  html { scroll-padding-top: 80px; }
  .site-header { height: 64px; padding: 0 16px; }
  .site-header .brand-mark { width: 30px; height: 28px; }
  .site-header .brand { gap: 8px; }
  .site-header .brand-copy strong { font-size: 15px; }
  .site-header .brand-copy span { font-size: 8px; }
  body.catalog-v2 .site-header { padding-right: 84px; }
  body.catalog-v2 .menu-button,
  .product-detail-page .menu-button { top: 10px; right: 16px; }
  .menu-button { min-width: 56px; min-height: 44px; gap: 8px; }
  .menu-button__icon { width: 24px; }
  .site-nav { top: 64px; height: calc(100dvh - 64px); padding: 16px 16px max(24px, env(safe-area-inset-bottom)); }
  .site-nav > a,
  .site-nav .nav-products > a { height: 56px; font-size: 17px; }
  .site-nav .language-switch { min-height: 48px; margin-bottom: 8px; }
  .site-nav .language-switch a { height: 44px; }
  .product-dropdown__head { min-height: 64px; padding: 12px; }
  .product-dropdown__body { padding: 0 12px 16px; }
  .product-dropdown__categories { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
  .site-nav .product-dropdown .product-dropdown__category { height: auto; min-height: 44px; padding: 8px 10px; white-space: normal; line-height: 1.4; }
  .product-dropdown__panels { padding-top: 8px; }
  .product-dropdown__panel h3 { margin-bottom: 8px; }
  .site-nav .product-dropdown__panel h3 a { min-height: 44px; height: auto; font-size: 22px; }
  .site-nav .product-dropdown__subcategories a { min-height: 48px; height: auto; padding: 8px 10px; border: 0; font-size: 14px; line-height: 1.5; }

  .hero { height: auto; min-height: 0; }
  .hero-media { inset: 0; width: 100%; height: 100%; object-position: 62% center; opacity: 0.7; }
  .hero-shade { background: linear-gradient(180deg, rgba(0,0,0,0.08) 20%, rgba(0,0,0,0.8) 78%); }
  .hero-content { height: auto; min-height: 620px; padding: 252px 0 40px; justify-content: flex-end; }
  .hero h1 { font-size: clamp(36px, 10vw, 48px); line-height: 1.16; }
  html[lang="en"] .hero h1 { font-size: clamp(32px, 9vw, 42px); }
  .hero-summary { max-width: 36ch; margin-top: 18px; font-size: 15px; line-height: 1.7; }
  .hero-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 24px; gap: 12px; align-items: start; }
  .hero-actions .site-action { min-height: 48px; gap: 8px; font-size: 14px; line-height: 1.4; }
  .hero-actions .site-action > span:first-child { flex: 1; }
  .hero-actions .site-arrow { width: 34px; height: 34px; }
  html[lang="en"] .hero-actions .site-action { font-size: 13px; }
  .capabilities, .applications { padding: 48px 0 56px; }
  .section-heading { gap: 16px; margin-bottom: 24px; }
  .section-heading h2, .company-heading h2 { font-size: 30px; line-height: 1.2; }
  .section-heading p { font-size: 15px; }
  .feature-visual { min-height: 240px; }
  .feature-copy { padding: 20px; gap: 16px; }
  .feature-copy h3 { font-size: 23px; }
  .capability-row { padding: 24px 20px; gap: 16px; }
  .product-center-cta { margin-top: 28px; padding: 24px 20px; gap: 20px; }
  .smart-lock-showcase__inner { padding-top: 48px; padding-bottom: 48px; gap: 24px; }
  .smart-lock-showcase__copy h2 { font-size: 30px; }
  .smart-lock-showcase__products { gap: 16px; }
  .smart-lock-preview h3 { font-size: 15px; }
  .company-layout { padding: 48px 0; gap: 24px; }
  .company-copy .company-lead { font-size: 20px; }
  .company-copy p { font-size: 15px; line-height: 1.85; }
  .company-details dd { font-size: 16px; }
  .company-equipment { gap: 12px 20px; font-size: 14px; }
  .site-footer { min-height: 0; padding-top: 28px; padding-bottom: max(28px, env(safe-area-inset-bottom)); gap: 20px; }
  .footer-identity__copy strong { font-size: 14px; }

  .catalog-v2 .category-hero,
  .catalog-v2 .product-detail-hero { min-height: 0; padding-top: 64px; }
  .catalog-v2 .category-hero__inner,
  .catalog-v2 .product-detail-hero__inner { min-height: 0; padding: 28px 0; }
  .catalog-v2 .category-hero h1 { font-size: 32px; line-height: 1.2; }
  .catalog-v2 .product-detail-hero h1 { font-size: 28px; line-height: 1.3; }
  .catalog-breadcrumb { min-height: 52px; padding: 4px 0; gap: 0 10px; font-size: 12px; }
  .catalog-breadcrumb a { min-height: 44px; }
  .family-directory { gap: 28px 14px; margin-top: 24px; margin-bottom: 48px; }
  .family-card__primary > div { min-height: 48px; margin-top: 8px; gap: 6px; }
  .family-card h2 { min-width: 0; font-size: 16px; overflow-wrap: anywhere; }
  .family-card__primary .catalog-arrow { width: 26px; height: 26px; }
  .family-card__subcategories { margin-top: 4px; gap: 2px; }
  .family-card__subcategories a { min-height: 44px; padding: 6px 2px; gap: 6px; font-size: 13px; overflow-wrap: anywhere; }
  .catalog-v2 .model-collection { padding-top: 20px; padding-bottom: 48px; }
  .catalog-v2 .catalog-product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog-v2 .model-card > div { min-height: 68px; padding: 12px 10px; gap: 8px; }
  .catalog-v2 .model-card :is(h2, h3) { font-size: 15px; overflow-wrap: anywhere; }
  .catalog-v2 .model-card .site-arrow { width: 26px; height: 26px; }
  .catalog-v2 .product-viewer { grid-template-columns: minmax(0, 1fr); padding: 20px 0 28px; gap: 24px; }
  .catalog-v2 .product-stage { min-height: 0; height: auto; }
  .catalog-v2 .product-stage img { min-height: 0; height: auto; aspect-ratio: 4 / 3; padding: 12px 12px 56px; }
  .product-stage > span { right: 12px; bottom: 10px; min-height: 44px; padding: 0 12px; gap: 12px; font-size: 12px; }
  .product-viewer__controls { position: static; padding-top: 16px; }
  .product-viewer__controls h2 { font-size: 24px; }
  .product-viewer__controls > p { margin-top: 8px; font-size: 14px; }
  .color-options { margin-top: 16px; }
  .color-option { min-height: 48px; gap: 8px; padding: 8px 10px; }
  .product-specs { padding: 28px 0; }
  .product-specs h2 { margin-bottom: 20px; font-size: 24px; }
  .product-specs dl { grid-template-columns: minmax(0, 1fr); }
  .product-specs dl > div { grid-template-columns: 84px minmax(0, 1fr); padding: 16px 0; gap: 12px; }
  .product-inquiry { padding: 16px 0 40px; gap: 8px 20px; font-size: 14px; }
}


/* ---- ICP 备案号（工信部要求：首页/页脚展示并可点击跳转） ---- */
.portal-records {
  position: absolute;
  right: 0;
  bottom: 16px;
  left: 0;
  z-index: 2;
  margin: 0;
  color: rgba(247, 247, 245, 0.45);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-align: center;
}
.portal-records a {
  color: inherit;
}
.portal-records a:hover {
  color: rgba(247, 247, 245, 0.85);
}
.footer-identity__copy > .footer-records {
  font-size: 12px;
  letter-spacing: 0.02em;
}
.footer-identity__copy > .footer-records a {
  color: inherit;
}
.footer-identity__copy > .footer-records a:hover {
  color: var(--white);
  text-decoration: underline;
}