:root {
  --black-02: rgba(0, 0, 0, .9);
  --black-03: rgba(0, 0, 0, .6);
  --white-02: rgba(255, 255, 255, .75);
  --white-03: rgba(255, 255, 255, .5);
  /* 1920 baseline: shell 1820, content 1500 → side inset 160, page gutter 50 */
  --shell: 1820px;
  --content: 1500px;
  --shell-gutter: 50px;
  --content-inset: 160px;
  --montserrat: "Montserrat", Arial, sans-serif;
  --ui: "PingFang SC", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html {
  min-width: 1024px;
  scroll-behavior: smooth;
  overflow-x: auto;
}
body { margin: 0; min-width: 1024px; color: var(--black-02); background: #111; font-family: var(--ui); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
h1, h2, h3, p, dl, dd { margin: 0; }
a { color: inherit; text-decoration: none; }

.page-backdrop { position: fixed; inset: 0; z-index: -2; overflow: hidden; background: #050606; }
.page-backdrop img { width: 100%; height: 100%; object-fit: cover; opacity: .5; }
.page-backdrop::after { position: absolute; inset: 0; background: rgba(0,0,0,.6); content: ""; }

body.is-embedded { background: transparent; }
body.is-embedded .page-backdrop { display: none; }

.sku-shell {
  position: relative;
  width: min(var(--shell), calc(100% - var(--shell-gutter) * 2));
  margin: 60px auto 100px;
  overflow: hidden;
  border-radius: 40px;
  background: #fff;
  padding-bottom: 20px;
}
.sku-close {
  position: fixed;
  z-index: 40;
  top: calc(60px + 48px);
  right: calc((100vw - min(var(--shell), 100vw - var(--shell-gutter) * 2)) / 2 + 48px);
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  transition: transform .25s ease;
}
.sku-close:hover { transform: rotate(90deg); }
.sku-close img { display: block; width: 36px; height: 36px; }

html.is-lang-switching,
html.is-lang-switching body {
  overflow: hidden;
}
html.is-lang-switching body {
  opacity: 0;
  transition: opacity .32s cubic-bezier(.22, .61, .36, 1);
}
html.is-lang-revealing body {
  opacity: 1;
  transition: opacity .55s cubic-bezier(.22, .61, .36, 1);
}
@media (prefers-reduced-motion: reduce) {
  html.is-lang-switching body,
  html.is-lang-revealing body {
    transition: none;
  }
}

html[data-lang="zh"] body { font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", var(--ui); }
html[data-lang="zh"] .sku-hero h1,
html[data-lang="zh"] .sku-heading h2 {
  text-transform: none;
}
html[lang^="zh"] .sku-hero h1,
html[data-lang="zh"] .sku-hero h1 {
  font-size: 68px;
  line-height: 1.2;
}
html[data-lang="zh"] .sku-hero p,
html[data-lang="zh"] .sku-heading p,
html[data-lang="zh"] .highlight-grid p {
  text-wrap: pretty;
  line-break: strict;
  line-height: 1.6;
}

/* Centered 1500 content column inside 1820 shell */
.sku-content {
  width: min(var(--content), calc(100% - var(--content-inset) * 2));
  margin-inline: auto;
}

.sku-hero { position: relative; height: 930px; overflow: hidden; color: #fff; }
.sku-hero__image { width: 100%; height: 100%; object-fit: cover; }
.sku-hero__content {
  position: absolute;
  top: 185px;
  left: var(--content-inset);
  width: min(820px, calc(var(--content) * .55));
}
.sku-tag {
  display: inline-flex;
  height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 20px;
  border-radius: 999px;
  color: #fff;
  background: rgba(255, 255, 255, .14);
  font: 700 14px/1 var(--montserrat);
  letter-spacing: .04em;
  text-transform: uppercase;
  white-space: nowrap;
  backdrop-filter: blur(8px);
}
.sku-tag img {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  object-fit: contain;
}
html[data-lang="zh"] .sku-tag {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", var(--ui);
  font-weight: 600;
  letter-spacing: 0;
  text-transform: none;
}
.sku-hero h1 { margin-top: 24px; font: 700 72px/1.06 var(--montserrat); letter-spacing: -.76px; }
.sku-hero h1 .sku-hero__title-line { white-space: nowrap; }
.sku-hero p { margin-top: 24px; color: var(--white-02); font-size: 18px; line-height: 1.6; }
.sku-hero__content > a {
  position: relative;
  display: inline-flex;
  overflow: hidden;
  height: 60px;
  margin-top: 52px;
  align-items: center;
  justify-content: center;
  padding: 0 40px;
  border-radius: 999px;
  color: #897361;
  background: #fff;
  font: 600 20px/1 var(--ui);
}
.sku-hero__content > a::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: rgba(0, 0, 0, .1);
  opacity: 0;
  transition: opacity .25s ease;
  pointer-events: none;
}
.sku-hero__content > a:hover::after {
  opacity: 1;
}

.sku-section { position: relative; width: 100%; }
.sku-heading { width: min(var(--content), calc(100% - var(--content-inset) * 2)); margin-inline: auto; text-align: center; }
.sku-heading h2 { font: 700 40px/1 var(--montserrat); text-transform: capitalize; }
.sku-heading p { margin-top: 20px; color: var(--black-03); font-size: 14px; line-height: 1.45; }

.highlights { height: 730px; padding-top: 100px; overflow-x: auto; }
.highlight-grid {
  display: grid;
  width: min(var(--content), calc(100% - var(--content-inset) * 2));
  min-width: 1100px;
  margin: 116px auto 0;
  grid-template-columns: repeat(4, 1fr);
  gap: 88px;
}
.highlight-grid article { text-align: center; }
.highlight-grid img { width: 88px; height: 88px; margin: auto; }
.highlight-grid h3 { margin-top: 52px; font-size: 24px; font-weight: 600; line-height: 1; }
.highlight-grid p { margin-top: 24px; color: var(--black-03); font-size: 14px; line-height: 1.5; }

.product-duo { display: grid; height: 910px; grid-template-columns: 1fr 1fr; overflow: hidden; }
.product-duo img { width: 100%; height: 100%; object-fit: cover; }

.finishes { height: 960px; padding-top: 100px; overflow-x: auto; }
.finish-grid {
  display: grid;
  width: min(var(--content), calc(100% - var(--content-inset) * 2));
  min-width: 1200px;
  margin: 84px auto 0;
  grid-template-columns: repeat(5, 1fr);
  gap: 40px;
}
.finish-grid article { text-align: center; }
.finish-grid img { width: 208px; height: 180px; margin: auto; object-fit: contain; }
.finish-grid h3 { margin-top: 44px; font-size: 16px; font-weight: 600; line-height: 1; white-space: nowrap; }
.finish-grid p { margin-top: 12px; color: var(--black-03); font-size: 14px; }
.size-table-wrap {
  --size-table-line: #e6e6e6;
  width: min(var(--content), calc(100% - var(--content-inset) * 2));
  margin: 70px auto 0;
  overflow: auto;
  border: 1px solid var(--size-table-line);
  border-radius: 16px;
  background: #fff;
}
.size-table-wrap table {
  width: 100%;
  min-width: 1120px;
  height: 245px;
  border-collapse: collapse;
  border-spacing: 0;
  font-size: 16px;
  background: #fff;
}
.size-table-wrap th,
.size-table-wrap td {
  border: 0;
  border-right: 1px solid var(--size-table-line);
  border-bottom: 1px solid var(--size-table-line);
  background-color: #fff;
}
.size-table-wrap th {
  width: 330px;
  padding-left: 28px;
  text-align: left;
  font-weight: 600;
}
.size-table-wrap td {
  min-width: 112px;
  text-align: center;
}
.size-table-wrap tr td:last-child {
  border-right: 0;
}
.size-table-wrap tr:last-child th,
.size-table-wrap tr:last-child td {
  border-bottom: 0;
}
.size-table-wrap td:nth-child(even) {
  background-color: #f6f6f6;
}

.app-showcase { height: 830px; overflow: hidden; padding-top: 100px; }
.ui-marquee {
  --ui-inset: var(--content-inset);
  width: 100%;
  margin-top: 84px;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 13%, #000 87%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 13%, #000 87%, transparent);
}
.ui-track { display: flex; width: max-content; gap: 24px; animation: ui-scroll 60s linear infinite; }
.ui-track img { width: 230px; height: 474px; flex: 0 0 auto; border-radius: 16px; object-fit: cover; object-position: top; overflow: hidden; }
@keyframes ui-scroll {
  from { transform: translateX(var(--ui-inset)); }
  to { transform: translateX(calc(-50% - 12px + var(--ui-inset))); }
}

.tech-specs {
  min-height: 874px;
  padding: 100px 0 80px;
  color: #fff;
  background: #000;
  overflow-x: auto;
}
.sku-heading--dark p { color: var(--white-02); }

.spec-layout {
  --spec-card-gap: 9px;
  display: flex;
  width: 1500px;
  min-width: 1500px;
  margin: 84px auto 0;
  align-items: flex-start;
  gap: 0;
}
.spec-product {
  flex: 0 0 550px;
  width: 550px;
  height: 550px;
  object-fit: contain;
}
.spec-cards {
  display: grid;
  flex: 0 0 270px;
  width: 270px;
  margin-left: 82px;
  gap: var(--spec-card-gap);
}
.spec-cards article {
  display: flex;
  width: 270px;
  height: 174px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 32px;
  text-align: center;
  background-image: linear-gradient(
    -41.90859999252976deg,
    rgba(255, 255, 255, 0.05) 2.6207%,
    rgba(255, 255, 255, 0.1) 94.528%
  );
}
.spec-cards span { color: rgba(255, 255, 255, 0.75); font-size: 14px; line-height: 14px; }
.spec-cards strong { margin-top: 14px; font: 700 24px/1 var(--montserrat); color: #fff; }
.spec-cards small { margin-top: 12px; color: rgba(255, 255, 255, 0.5); font-size: 12px; line-height: 1; }

.spec-list {
  display: flex;
  flex: 0 0 590px;
  width: 590px;
  height: 540px;
  margin-left: var(--spec-card-gap);
  flex-direction: column;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 32px;
  font-size: 14px;
  background-image: linear-gradient(
    -51.885378912331674deg,
    rgba(255, 255, 255, 0.05) 2.6207%,
    rgba(255, 255, 255, 0.1) 94.528%
  );
}
.spec-list > div {
  position: relative;
  display: grid;
  grid-template-columns: 218px 1fr;
  align-items: center;
  padding: 0 45px 0 27px;
  box-sizing: border-box;
}
.spec-list > div:nth-child(1) { height: 117px; }
.spec-list > div:nth-child(2) { height: 114px; }
.spec-list > div:nth-child(3) { height: 88px; }
.spec-list > div:nth-child(4),
.spec-list > div:nth-child(5) { height: 62px; }
.spec-list > div:nth-child(6) { height: 97px; }
.spec-list > div:not(:last-child)::after {
  position: absolute;
  left: calc(50% - 265px);
  bottom: 0;
  width: 500px;
  height: 1px;
  background: rgba(255, 255, 255, 0.05);
  content: "";
}
.spec-list dt { color: rgba(255, 255, 255, 0.75); line-height: 14px; }
.spec-list dd { color: #fff; }
.spec-list ul {
  margin: 0;
  padding-left: 21px;
  list-style: disc;
}
.spec-list li {
  line-height: 26px;
  color: #fff;
}
.spec-list li::marker { color: #fff; }

.box-section { height: 640px; padding-top: 100px; overflow-x: auto; }
.box-grid {
  display: grid;
  width: min(var(--content), calc(100% - var(--content-inset) * 2));
  min-width: 900px;
  margin: 110px auto 0;
  grid-template-columns: repeat(3, 1fr);
  justify-items: center;
  gap: 40px;
}
.box-grid article {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
  text-align: center;
}
.box-grid img {
  width: 220px;
  height: 220px;
  object-fit: contain;
}
.box-grid h3 {
  margin: 0;
  color: var(--black-01);
  font: 600 20px/1 "PingFang SC", var(--ui);
}

.reveal { opacity: 0; transform: translateY(20px); transition: opacity .75s ease, transform .75s cubic-bezier(.2,.75,.25,1); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1440px) and (min-width: 1024px) {
  :root {
    --shell-gutter: 24px;
    --content-inset: 80px;
  }
  .sku-shell { margin-top: 32px; border-radius: 32px; }
  .sku-hero { height: min(800px, 82vh); min-height: 680px; }
  .sku-hero__content { top: 180px; width: min(720px, 56%); }
  .sku-hero h1 { font-size: clamp(54px, 5.2vw, 72px); }
  html[lang^="zh"] .sku-hero h1,
  html[data-lang="zh"] .sku-hero h1 { font-size: clamp(50px, 5vw, 68px); }
  .highlight-grid { gap: 36px; }
  .product-duo { height: min(50vw, 720px); }
  .finish-grid { gap: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}