:root {
  --ink: #172027;
  --muted: #61707a;
  --line: #dfe4e6;
  --soft: #f4f6f5;
  --white: #ffffff;
  --accent: #e65f2b;
  --accent-dark: #bd4318;
  --dark: #11191e;
  --container: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.container {
  width: min(calc(100% - 32px), var(--container));
  margin-inline: auto;
}

.skip-link,
.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:focus {
  z-index: 100;
  width: auto;
  height: auto;
  margin: 8px;
  padding: 12px 16px;
  clip: auto;
  background: var(--white);
  color: var(--ink);
}

.utility-bar {
  background: var(--dark);
  color: #dce2e5;
  font-size: 14px;
}

.utility-inner {
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.utility-links {
  display: flex;
  gap: 24px;
}

.utility-links a:hover {
  color: var(--white);
}

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid var(--line);
}

.nav {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  object-fit: contain;
}

.brand span {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand strong {
  font-size: 24px;
  letter-spacing: 0.08em;
}

.brand small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.03em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  font-weight: 600;
}

.nav-links > a:not(.button) {
  position: relative;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-links > a:not(.button)::after {
  position: absolute;
  right: 0;
  bottom: 4px;
  left: 0;
  height: 2px;
  content: "";
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.nav-links > a:hover::after {
  transform: scaleX(1);
}

.nav-links > a.active:not(.button) {
  color: var(--accent-dark);
}

.nav-links > a.active:not(.button)::after {
  transform: scaleX(1);
}

.menu-button {
  display: none;
  width: 48px;
  height: 48px;
  padding: 12px;
  border: 0;
  background: transparent;
}

.menu-button span:not(.sr-only) {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
  transition: transform 180ms ease, opacity 180ms ease;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: var(--accent);
  color: var(--white);
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.button:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
}

.button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.menu-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.button-small {
  min-height: 44px;
  padding: 8px 16px;
}

.hero {
  position: relative;
  min-height: 720px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--dark);
  color: var(--white);
}

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

.hero-media {
  background: url("assets/expandable.jpg") center / cover no-repeat;
  transform: scale(1.01);
}

.hero-overlay {
  background: linear-gradient(90deg, rgba(8, 14, 18, 0.92) 0%, rgba(8, 14, 18, 0.7) 46%, rgba(8, 14, 18, 0.2) 80%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-block: 96px;
}

.eyebrow {
  margin-bottom: 16px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow.light {
  color: #ff9873;
}

.hero h1 {
  max-width: 800px;
  margin: 0 0 24px;
  font-size: clamp(48px, 6vw, 80px);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.hero-content > p {
  max-width: 700px;
  margin: 0 0 32px;
  color: #dce2e5;
  font-size: 20px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.button-ghost {
  border-color: rgba(255, 255, 255, 0.7);
  background: transparent;
}

.button-ghost:hover {
  border-color: var(--white);
  background: var(--white);
  color: var(--ink);
}

.hero-proof {
  max-width: 720px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 64px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}

.hero-proof div {
  display: flex;
  flex-direction: column;
}

.hero-proof strong {
  font-size: 24px;
}

.hero-proof span {
  color: #b9c3c8;
  font-size: 14px;
}

.trust-strip {
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.trust-grid > div {
  min-height: 128px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.trust-grid > div:first-child {
  border-left: 1px solid var(--line);
}

.trust-grid span {
  color: var(--accent);
  font-weight: 800;
}

.trust-grid p,
.trust-grid strong {
  display: block;
  margin: 0;
}

.trust-grid p {
  color: var(--muted);
  font-size: 14px;
}

.trust-grid strong {
  margin-bottom: 2px;
  color: var(--ink);
  font-size: 16px;
}

.section {
  padding-block: 112px;
}

.section-heading {
  margin-bottom: 64px;
}

.section-heading h2,
.quote-intro h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.035em;
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: 64px;
  align-items: end;
}

.split-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.centered {
  max-width: 760px;
  margin-inline: auto;
  text-align: center;
}

.product-feature {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 80px;
  align-items: center;
  margin-top: 80px;
}

.product-feature.reverse .product-image {
  order: 2;
}

.product-image {
  position: relative;
  overflow: hidden;
  min-height: 520px;
  background: var(--soft);
}

.product-image img {
  width: 100%;
  height: 100%;
  min-height: 520px;
  object-fit: cover;
  transition: transform 420ms ease;
}

.product-image:hover img {
  transform: scale(1.03);
}

.image-label {
  position: absolute;
  top: 24px;
  left: 24px;
  padding: 8px 16px;
  background: var(--dark);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
}

.product-copy h3 {
  margin: 0 0 24px;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.16;
  letter-spacing: -0.03em;
}

.product-copy > p {
  margin: 0 0 32px;
  color: var(--muted);
  font-size: 18px;
}

.check-list {
  display: grid;
  gap: 16px;
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 32px;
}

.check-list li::before {
  position: absolute;
  top: 0;
  left: 0;
  color: var(--accent);
  content: "✓";
  font-weight: 900;
}

.text-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--accent-dark);
  font-weight: 800;
}

.text-link span {
  transition: transform 180ms ease;
}

.text-link:hover span {
  transform: translateX(4px);
}

.comparison {
  background: var(--soft);
}

.comparison-table {
  overflow: hidden;
  background: var(--white);
  border-radius: 12px;
}

.table-row {
  display: grid;
  grid-template-columns: 0.8fr 1.1fr 1.1fr;
  border-bottom: 1px solid var(--line);
}

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

.table-row > div {
  min-height: 80px;
  display: flex;
  align-items: center;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.table-row > div:last-child {
  border-right: 0;
}

.table-row > div:first-child {
  font-weight: 800;
}

.table-head {
  background: var(--dark);
  color: var(--white);
  font-weight: 800;
}

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

.project-card {
  position: relative;
  min-height: 440px;
  overflow: hidden;
  background: var(--dark);
  color: var(--white);
}

.project-card img {
  width: 100%;
  height: 100%;
  min-height: 440px;
  object-fit: cover;
  opacity: 0.62;
  transition: transform 420ms ease, opacity 420ms ease;
}

.project-card:hover img {
  opacity: 0.48;
  transform: scale(1.03);
}

.project-large {
  grid-row: span 2;
  min-height: 904px;
}

.project-large img {
  min-height: 904px;
}

.project-content {
  position: absolute;
  z-index: 1;
  right: 0;
  bottom: 0;
  left: 0;
  padding: 32px;
  background: linear-gradient(0deg, rgba(8, 14, 18, 0.95), transparent);
}

.project-content span {
  color: #ff9873;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-content h3 {
  max-width: 560px;
  margin: 8px 0 12px;
  font-size: 28px;
  line-height: 1.25;
}

.project-content p {
  max-width: 620px;
  margin: 0;
  color: #dce2e5;
}

.project-note {
  background: var(--accent);
}

.project-note .project-content {
  background: none;
}

.project-note .project-content span {
  color: #ffe5dc;
}

.project-number {
  padding: 32px;
  color: rgba(255, 255, 255, 0.28);
  font-size: 112px;
  font-weight: 900;
  line-height: 1;
}

.process {
  background: var(--soft);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.process-grid li {
  min-height: 280px;
  padding: 32px 24px;
  background: var(--white);
  border-top: 3px solid var(--accent);
}

.process-grid span {
  color: var(--accent);
  font-size: 14px;
  font-weight: 900;
}

.process-grid h3 {
  margin: 64px 0 16px;
  font-size: 24px;
}

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

.quote-section {
  background: var(--dark);
  color: var(--white);
}

.direct-contact {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) auto;
  gap: 48px 80px;
  align-items: end;
}

.direct-contact h2 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.035em;
}

.direct-contact > div > p {
  max-width: 760px;
  margin: 24px 0 0;
  color: #c9d1d5;
  font-size: 18px;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.contact-card-wide {
  grid-column: 1 / -1;
  grid-template-columns: 1.2fr 1fr 1fr 1.4fr;
  gap: 24px;
  align-items: start;
}

.page-hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background-position: center;
  background-size: cover;
  color: var(--white);
}

.page-hero::before {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, rgba(8, 14, 18, 0.9), rgba(8, 14, 18, 0.25));
}

.expandable-page-hero {
  background-image: url("assets/expandable.jpg");
}

.folding-page-hero {
  background-image: url("assets/folding-x.jpg");
}

.page-hero-content {
  position: relative;
  z-index: 1;
  padding-block: 96px;
}

.page-hero h1,
.vr-hero h1 {
  max-width: 900px;
  margin: 0 0 24px;
  font-size: clamp(48px, 6vw, 76px);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.page-hero p,
.vr-hero p {
  max-width: 720px;
  margin: 0;
  color: #dce2e5;
  font-size: 20px;
}

.catalog-intro {
  border-bottom: 1px solid var(--line);
}

.catalog-intro-grid {
  min-height: 88px;
  display: grid;
  grid-template-columns: 1.4fr repeat(4, auto);
  gap: 32px;
  align-items: center;
}

.catalog-intro-grid strong {
  font-size: 18px;
}

.catalog-intro-grid span {
  color: var(--muted);
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.product-card {
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 12px;
  transition: transform 180ms ease, border-color 180ms ease;
}

.product-card:hover {
  border-color: #aeb8bc;
  transform: translateY(-4px);
}

.product-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--soft);
}

.product-card-body {
  padding: 24px;
}

.product-card-body > span {
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.product-card h3 {
  min-height: 60px;
  margin: 8px 0 16px;
  font-size: 23px;
  line-height: 1.3;
}

.product-card p {
  min-height: 78px;
  margin: 0;
  color: var(--muted);
}

.product-card ul {
  display: grid;
  gap: 8px;
  margin: 24px 0;
  padding: 24px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.product-card li::before {
  margin-right: 8px;
  color: var(--accent);
  content: "✓";
  font-weight: 900;
}

.card-actions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.card-actions a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  color: var(--accent-dark);
  font-weight: 800;
}

.card-actions a:first-child {
  background: var(--accent);
  color: var(--white);
}

.card-actions a:hover {
  border-color: var(--accent-dark);
  background: var(--accent-dark);
  color: var(--white);
}

.catalog-cta {
  background: var(--dark);
  color: var(--white);
}

.vr-hero {
  padding-block: 112px;
  background: var(--dark);
  color: var(--white);
}

.vr-frame-wrap {
  overflow: hidden;
  aspect-ratio: 16 / 9;
  min-height: 520px;
  background: #05080a;
  border-radius: 12px;
}

.vr-frame-wrap iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

.vr-help {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  margin-top: 32px;
  padding: 32px;
  background: var(--soft);
}

.vr-help h2,
.vr-help p {
  margin: 0;
}

.vr-help p {
  margin-top: 8px;
  color: var(--muted);
}

.blog-hero {
  padding-block: 112px;
  background: var(--dark);
  color: var(--white);
}

.blog-hero h1 {
  max-width: 920px;
  margin: 0 0 24px;
  font-size: clamp(48px, 6vw, 76px);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.blog-hero p {
  max-width: 760px;
  margin: 0;
  color: #dce2e5;
  font-size: 20px;
}

.featured-post {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 56px;
  align-items: center;
  margin-bottom: 64px;
  padding: 32px;
  background: var(--soft);
}

.featured-post img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.featured-post h2 {
  margin: 16px 0;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.featured-post p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.post-meta {
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.post-tags span {
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  color: var(--muted);
  font-size: 13px;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px;
}

.blog-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
}

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

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

.blog-card h2 {
  margin: 12px 0 16px;
  font-size: 23px;
  line-height: 1.3;
}

.blog-card p {
  margin: 0 0 24px;
  color: var(--muted);
}

.blog-card a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-dark);
  font-weight: 800;
}

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

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

.product-detail-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  margin-bottom: 16px;
  color: var(--accent-dark);
  font-weight: 800;
}

.product-detail-link:hover {
  text-decoration: underline;
}

.breadcrumb {
  border-bottom: 1px solid var(--line);
  background: var(--soft);
}

.breadcrumb .container {
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
  color: var(--muted);
  font-size: 14px;
  white-space: nowrap;
}

.breadcrumb a {
  color: var(--accent-dark);
}

.product-detail-hero {
  padding-block: 80px;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 72px;
  align-items: center;
}

.detail-image {
  overflow: hidden;
  min-height: 560px;
  background: var(--soft);
}

.detail-image img {
  width: 100%;
  height: 100%;
  min-height: 560px;
  object-fit: cover;
}

.detail-intro h1 {
  margin: 0 0 24px;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.detail-tagline {
  color: var(--ink) !important;
  font-size: 22px !important;
  font-weight: 700;
}

.detail-intro > p {
  color: var(--muted);
  font-size: 18px;
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 32px;
}

.button-outline {
  border-color: var(--accent);
  background: var(--white);
  color: var(--accent-dark);
}

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

.detail-summary {
  border-block: 1px solid var(--line);
}

.detail-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.detail-summary-grid > div {
  min-height: 112px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 24px 32px;
  border-right: 1px solid var(--line);
}

.detail-summary-grid > div:first-child {
  border-left: 1px solid var(--line);
}

.detail-summary-grid span {
  color: var(--muted);
  font-size: 14px;
}

.detail-summary-grid strong {
  margin-top: 4px;
}

.detail-content {
  background: var(--soft);
}

.detail-content-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 80px;
}

.detail-content h2 {
  margin: 0 0 32px;
  font-size: 36px;
  line-height: 1.2;
}

.detail-highlight-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.detail-highlight-list li {
  position: relative;
  padding: 18px 24px 18px 52px;
  background: var(--white);
  font-weight: 700;
}

.detail-highlight-list li::before {
  position: absolute;
  left: 24px;
  color: var(--accent);
  content: "✓";
  font-weight: 900;
}

.spec-table-wrap {
  overflow-x: auto;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
}

.spec-table th,
.spec-table td {
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.spec-table th {
  width: 36%;
  color: var(--muted);
  font-size: 14px;
}

.spec-note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.application-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.application-grid li {
  min-height: 144px;
  display: flex;
  align-items: flex-end;
  padding: 24px;
  border-top: 3px solid var(--accent);
  background: var(--soft);
  font-size: 20px;
  font-weight: 800;
}

.customization-section {
  background: var(--dark);
  color: var(--white);
}

.customization-section h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.16;
}

.customization-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.customization-list span {
  padding: 16px;
  border: 1px solid #40505a;
  color: #dce2e5;
}

/* Alibaba-inspired B2B product detail layout */
.alibaba-detail {
  padding-block: 56px 72px;
  background: #f7f8f8;
}

.alibaba-detail .product-detail-grid {
  align-items: start;
  gap: 48px;
}

.product-gallery {
  min-width: 0;
}

.gallery-main {
  overflow: hidden;
  aspect-ratio: 1.18 / 1;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
}

.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(3, 82px);
  gap: 12px;
  margin-top: 14px;
}

.gallery-thumbs button {
  overflow: hidden;
  aspect-ratio: 1;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  font-weight: 800;
  cursor: default;
}

.gallery-thumbs button.active {
  border: 2px solid var(--accent);
}

.gallery-thumbs img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-buy-panel {
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  box-shadow: 0 16px 50px rgba(10, 20, 25, 0.06);
}

.supplier-pill {
  display: inline-flex;
  margin-bottom: 24px;
  padding: 8px 12px;
  border-radius: 999px;
  background: #fff1eb;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
}

.product-buy-panel h1 {
  margin-bottom: 16px;
  font-size: clamp(34px, 4vw, 52px);
}

.trade-benefits {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin: 24px 0;
  color: #2f5946;
  font-size: 14px;
  font-weight: 800;
}

.quick-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.quick-details div {
  min-height: 82px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 14px 16px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.quick-details span {
  color: var(--muted);
  font-size: 12px;
}

.quick-details strong {
  margin-top: 4px;
  font-size: 14px;
}

.contact-panel {
  margin-top: 24px;
  padding: 22px;
  border-radius: 10px;
  background: var(--soft);
}

.contact-panel > p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.contact-panel .detail-actions {
  margin-top: 18px;
}

.detail-tabs {
  position: sticky;
  top: 0;
  z-index: 8;
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
}

.detail-tabs .container {
  display: flex;
  overflow-x: auto;
}

.detail-tabs a {
  min-height: 60px;
  display: inline-flex;
  align-items: center;
  padding-inline: 22px;
  border-bottom: 3px solid transparent;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 800;
}

.detail-tabs a:hover {
  border-bottom-color: var(--accent);
  color: var(--accent-dark);
}

.product-overview-section {
  background: var(--white);
}

.overview-copy {
  margin: -8px 0 28px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.overview-visual {
  overflow: hidden;
  align-self: start;
  border-radius: 12px;
  background: var(--dark);
  color: var(--white);
}

.overview-visual img {
  width: 100%;
  aspect-ratio: 1.35 / 1;
  object-fit: cover;
}

.overview-visual div {
  display: grid;
  gap: 8px;
  padding: 24px;
}

.overview-visual span {
  color: #cad3d7;
}

.attribute-section,
.delivery-section,
.related-section {
  background: var(--soft);
}

.detail-section-heading {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: end;
  margin-bottom: 36px;
}

.detail-section-heading h2 {
  margin: 0;
  font-size: clamp(32px, 4vw, 48px);
}

.detail-section-heading > p {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
}

.customization-section .split-heading > div:first-child p {
  max-width: 660px;
  color: #c9d1d5;
}

.delivery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.delivery-grid article {
  min-height: 240px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
}

.delivery-grid article > span {
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
}

.delivery-grid h3 {
  margin: 52px 0 12px;
  font-size: 23px;
}

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

.supplier-section {
  background: var(--dark);
  color: var(--white);
}

.supplier-card {
  display: grid;
  grid-template-columns: 1.15fr 1fr auto;
  gap: 48px;
  align-items: center;
}

.supplier-card h2 {
  margin: 0 0 18px;
  font-size: clamp(32px, 4vw, 48px);
}

.supplier-card p {
  margin: 0;
  color: #c9d1d5;
}

.supplier-card dl {
  margin: 0;
}

.supplier-card dl div {
  padding: 12px 0;
  border-bottom: 1px solid #354047;
}

.supplier-card dt {
  color: #9eabb1;
  font-size: 12px;
}

.supplier-card dd {
  margin: 4px 0 0;
  font-weight: 800;
}

.related-product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-product-card {
  display: grid;
  overflow: hidden;
  padding-bottom: 22px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.related-product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 34px rgba(10, 20, 25, 0.08);
}

.related-product-card img {
  width: 100%;
  aspect-ratio: 1.45 / 1;
  object-fit: cover;
}

.related-product-card span,
.related-product-card strong,
.related-product-card em {
  margin-inline: 22px;
}

.related-product-card span {
  margin-top: 20px;
  color: var(--muted);
  font-size: 12px;
}

.related-product-card strong {
  margin-top: 6px;
  font-size: 20px;
}

.related-product-card em {
  margin-top: 18px;
  color: var(--accent-dark);
  font-size: 14px;
  font-style: normal;
  font-weight: 800;
}

.mobile-contact-bar {
  display: none;
}

.supplied-detail-section {
  background: var(--soft);
}

.supplied-detail-gallery {
  width: min(100%, 1200px);
  display: grid;
  gap: 28px;
  margin-inline: auto;
}

.supplied-detail-gallery figure {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  box-shadow: 0 12px 36px rgba(10, 20, 25, 0.06);
}

.supplied-detail-gallery img {
  width: 100%;
  height: auto;
  display: block;
}

.supplied-detail-gallery figcaption {
  padding: 14px 18px;
  color: var(--muted);
  font-size: 13px;
}

.folding-system-section {
  background: var(--soft);
}

.folding-system-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.folding-system-gallery figure {
  overflow: hidden;
  margin: 0;
  border-radius: 12px;
  background: var(--white);
}

.folding-system-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.folding-system-gallery figcaption {
  padding: 16px;
  color: var(--muted);
  font-size: 14px;
}

.folding-install-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.folding-install-steps li {
  padding: 24px;
  border-top: 3px solid var(--accent);
  background: var(--white);
}

.folding-install-steps span {
  display: block;
  margin-bottom: 32px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 900;
}

.folding-install-steps strong {
  font-size: 20px;
}

.folding-install-steps p {
  margin: 8px 0 0;
  color: var(--muted);
}

.featured-post-link {
  color: inherit;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.featured-post-link:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(10, 20, 25, 0.08);
}

.project-card {
  display: block;
}

.editorial-hero {
  padding-block: 96px 72px;
  background: var(--dark);
  color: var(--white);
}

.editorial-hero h1 {
  max-width: 1000px;
  margin: 16px 0 24px;
  font-size: clamp(48px, 6vw, 72px);
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.editorial-hero p {
  max-width: 760px;
  margin: 0;
  color: #dce2e5;
  font-size: 20px;
}

.editorial-image {
  margin-top: -32px;
}

.editorial-image img {
  width: 100%;
  max-height: 640px;
  object-fit: cover;
}

.editorial-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 80px;
  padding-block: 80px 112px;
}

.editorial-body > section {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 24px;
  padding-block: 32px;
  border-top: 1px solid var(--line);
}

.editorial-body > section > span {
  color: var(--accent);
  font-weight: 900;
}

.editorial-body h2 {
  margin: 0 0 12px;
  font-size: 30px;
}

.editorial-body p {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.editorial-body aside {
  margin-top: 24px;
  padding: 24px;
  border-left: 3px solid var(--accent);
  background: var(--soft);
}

.editorial-body aside p {
  margin: 8px 0 0;
  font-size: 16px;
}

.editorial-sidebar {
  position: sticky;
  top: 88px;
  align-self: start;
  display: grid;
  gap: 16px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.editorial-sidebar h2,
.editorial-sidebar p {
  margin: 0;
}

.editorial-sidebar p {
  color: var(--muted);
}

.editorial-sidebar > a:last-child {
  color: var(--accent-dark);
  font-weight: 800;
}

.case-detail-hero {
  position: relative;
  min-height: 680px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--dark);
  color: var(--white);
}

.case-detail-hero::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(0deg, rgba(8, 14, 18, 0.92), rgba(8, 14, 18, 0.12));
}

.case-detail-hero > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-detail-hero .container {
  position: relative;
  z-index: 1;
  padding-block: 96px;
}

.case-detail-hero span {
  color: #ff9873;
  font-weight: 900;
  text-transform: uppercase;
}

.case-detail-hero h1 {
  max-width: 980px;
  margin: 16px 0 24px;
  font-size: clamp(48px, 6vw, 72px);
  line-height: 1.06;
}

.case-detail-hero p {
  max-width: 720px;
  margin: 0;
  color: #dce2e5;
  font-size: 20px;
}

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

.case-story-grid article {
  min-height: 280px;
  padding: 32px;
  border-top: 3px solid var(--accent);
  background: var(--soft);
}

.case-story-grid span {
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 900;
}

.case-story-grid h2 {
  margin: 64px 0 16px;
  font-size: 28px;
}

.case-story-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.case-result {
  background: var(--dark);
  color: var(--white);
}

.quote-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: 80px;
  align-items: start;
}

.quote-intro > p {
  margin: 24px 0 32px;
  color: #c9d1d5;
  font-size: 18px;
}

.contact-card {
  display: grid;
  gap: 8px;
  padding-top: 32px;
  border-top: 1px solid #354047;
  color: #dce2e5;
}

.contact-card strong {
  color: var(--white);
}

.contact-card a:hover {
  color: #ff9873;
}

.contact-card address {
  max-width: 480px;
  margin-top: 8px;
  color: #aeb9be;
  font-style: normal;
}

.quote-form {
  display: grid;
  gap: 24px;
  padding: 40px;
  border-radius: 12px;
  background: var(--white);
  color: var(--ink);
}

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

.quote-form label {
  display: grid;
  gap: 8px;
  color: #38464e;
  font-size: 14px;
  font-weight: 700;
}

.quote-form label span {
  color: var(--accent);
}

.quote-form input,
.quote-form select,
.quote-form textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 16px;
  border: 1px solid #cdd5d8;
  border-radius: 8px;
  background: var(--white);
  color: var(--ink);
  font-size: 16px;
}

.quote-form textarea {
  min-height: 136px;
  resize: vertical;
}

.quote-form input:focus,
.quote-form select:focus,
.quote-form textarea:focus {
  border-color: var(--accent);
}

.form-submit {
  width: 100%;
}

.form-note,
.form-success {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
}

.form-success {
  min-height: 22px;
  color: #177245;
  font-weight: 700;
}

.footer {
  background: #0b1115;
  color: #aeb9be;
}

.footer-main {
  min-height: 176px;
  display: grid;
  grid-template-columns: 1fr 1.4fr auto;
  gap: 48px;
  align-items: center;
}

.brand-footer strong {
  color: var(--white);
}

.footer-main p {
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 24px;
  color: var(--white);
  font-weight: 700;
}

.footer-links a:hover {
  color: #ff9873;
}

.footer-bottom {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid #253038;
  font-size: 14px;
}

@media (max-width: 1024px) {
  .utility-inner > span {
    display: none;
  }

  .utility-inner {
    justify-content: flex-end;
  }

  .nav-links {
    gap: 16px;
    font-size: 14px;
  }

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

  .trust-grid > div:nth-child(3) {
    border-left: 1px solid var(--line);
  }

  .split-heading,
  .product-feature,
  .quote-layout {
    gap: 48px;
  }

  .product-image,
  .product-image img {
    min-height: 440px;
  }

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

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

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

  .product-detail-grid,
  .detail-content-grid {
    gap: 48px;
  }

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

  .catalog-intro-grid {
    grid-template-columns: repeat(2, 1fr);
    padding-block: 24px;
  }

  .catalog-intro-grid strong {
    grid-column: 1 / -1;
  }

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

@media (max-width: 800px) {
  .utility-bar {
    display: none;
  }

  .nav {
    height: 72px;
  }

  .menu-button {
    display: block;
  }

  .menu-open .menu-button span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .menu-open .menu-button span:nth-child(2) {
    opacity: 0;
  }

  .menu-open .menu-button span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .nav-links {
    position: fixed;
    top: 72px;
    right: 0;
    bottom: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 32px 16px;
    background: var(--white);
  }

  .menu-open .nav-links {
    display: flex;
  }

  .nav-links > a:not(.button) {
    padding-inline: 16px;
    font-size: 20px;
  }

  .hero {
    min-height: 680px;
  }

  .hero-overlay {
    background: rgba(8, 14, 18, 0.76);
  }

  .hero-content {
    padding-block: 80px;
  }

  .hero h1 {
    font-size: clamp(44px, 12vw, 64px);
  }

  .split-heading,
  .product-feature,
  .quote-layout,
  .direct-contact,
  .featured-post,
  .product-detail-grid,
  .detail-content-grid {
    grid-template-columns: 1fr;
  }

  .detail-image,
  .detail-image img {
    min-height: 440px;
  }

  .direct-contact {
    align-items: start;
  }

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

  .product-feature.reverse .product-image {
    order: 0;
  }

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

  .project-large,
  .project-large img {
    min-height: 560px;
  }

  .table-row {
    grid-template-columns: 0.7fr 1fr 1fr;
  }

  .table-row > div {
    min-height: 96px;
    padding: 16px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-block: 48px;
  }

  .vr-help {
    flex-direction: column;
    align-items: flex-start;
  }

  .alibaba-detail .product-detail-grid,
  .supplier-card {
    grid-template-columns: 1fr;
  }

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

  .supplier-card {
    align-items: start;
  }

  .folding-system-gallery,
  .folding-install-steps,
  .case-story-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .editorial-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .editorial-sidebar {
    position: static;
  }
}

@media (max-width: 560px) {
  .brand small {
    display: none;
  }

  .hero-actions {
    display: grid;
  }

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

  .hero-proof {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 48px;
  }

  .hero-proof div {
    flex-direction: row;
    align-items: baseline;
    gap: 12px;
  }

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

  .trust-grid > div,
  .trust-grid > div:nth-child(3) {
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    border-left: 1px solid var(--line);
  }

  .section {
    padding-block: 80px;
  }

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

  .product-feature {
    margin-top: 64px;
  }

  .product-image,
  .product-image img {
    min-height: 360px;
  }

  .comparison-table {
    overflow-x: auto;
    border-radius: 0;
  }

  .table-row {
    min-width: 720px;
  }

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

  .catalog-grid,
  .catalog-intro-grid,
  .contact-card-wide,
  .blog-grid,
  .detail-summary-grid,
  .application-grid,
  .customization-list {
    grid-template-columns: 1fr;
  }

  .detail-summary-grid > div,
  .detail-summary-grid > div:first-child {
    min-height: 88px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    border-left: 1px solid var(--line);
  }

  .product-detail-hero {
    padding-block: 64px;
  }

  .detail-image,
  .detail-image img {
    min-height: 360px;
  }

  .detail-actions {
    display: grid;
  }

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

  .blog-hero {
    padding-block: 80px;
  }

  .blog-hero h1 {
    font-size: 44px;
  }

  .featured-post {
    gap: 32px;
    padding: 24px;
  }

  .featured-post img {
    height: 320px;
  }

  .catalog-intro-grid strong {
    grid-column: auto;
  }

  .product-card h3,
  .product-card p {
    min-height: auto;
  }

  .page-hero {
    min-height: 480px;
  }

  .page-hero-content,
  .vr-hero {
    padding-block: 80px;
  }

  .page-hero h1,
  .vr-hero h1 {
    font-size: 44px;
  }

  .vr-frame-wrap {
    min-height: 360px;
    aspect-ratio: 3 / 4;
  }

  .process-grid li {
    min-height: auto;
  }

  .process-grid h3 {
    margin-top: 32px;
  }

  .quote-layout {
    gap: 48px;
  }

  .quote-form {
    padding: 24px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    min-height: 96px;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
  }

  body {
    padding-bottom: 66px;
  }

  .alibaba-detail {
    padding-block: 24px 40px;
  }

  .alibaba-detail .product-detail-grid {
    gap: 24px;
  }

  .gallery-main,
  .product-buy-panel {
    border-radius: 0;
  }

  .gallery-thumbs {
    grid-template-columns: repeat(3, 68px);
  }

  .product-buy-panel {
    padding: 22px 18px;
  }

  .product-buy-panel h1 {
    font-size: 34px;
  }

  .quick-details,
  .delivery-grid,
  .related-product-grid {
    grid-template-columns: 1fr;
  }

  .detail-tabs .container {
    padding-inline: 0;
  }

  .detail-tabs a {
    min-height: 52px;
    padding-inline: 16px;
  }

  .detail-section-heading {
    display: grid;
    align-items: start;
  }

  .mobile-contact-bar {
    position: fixed;
    z-index: 50;
    right: 0;
    bottom: 0;
    left: 0;
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 8px;
    padding: 8px 12px;
    border-top: 1px solid var(--line);
    background: var(--white);
    box-shadow: 0 -8px 28px rgba(10, 20, 25, 0.12);
  }

  .mobile-contact-bar a {
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--accent);
    border-radius: 7px;
    color: var(--accent-dark);
    font-weight: 900;
  }

  .mobile-contact-bar a:last-child {
    background: var(--accent);
    color: var(--white);
  }

  .supplied-detail-gallery {
    gap: 16px;
  }

  .supplied-detail-gallery figure {
    border-radius: 0;
  }

  .folding-system-gallery,
  .folding-install-steps,
  .case-story-grid {
    grid-template-columns: 1fr;
  }

  .editorial-hero {
    padding-block: 72px 56px;
  }

  .editorial-hero h1,
  .case-detail-hero h1 {
    font-size: 42px;
  }

  .editorial-layout {
    padding-block: 64px 80px;
  }

  .editorial-body > section {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .case-detail-hero {
    min-height: 560px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}