/* Local concept only. Native CSS; inspired by product editorial design, not an Apple design-system package.
   Radius: pill controls and rounded lineup photography. Layers: header 10, skip link 20. */
:root {
  color-scheme: light;
  --white: #fff;
  --light: #f5f5f7;
  --ink: #1d1d1f;
  --secondary: #6e6e73;
  --blue: #0071e3;
  --blue-hover: #0066cc;
  --line: #d2d2d7;
  --page-width: 1200px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--white);
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; }
body, button { font-size: 17px; line-height: 1.5; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; cursor: pointer; }
button, a, summary { touch-action: manipulation; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 4px; }
button:disabled { color: var(--secondary); background: var(--light); cursor: default; }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
[hidden] { display: none !important; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { font-weight: 650; }
h1, h2 { letter-spacing: -.055em; line-height: 1.04; text-wrap: balance; }
h2 { font-size: clamp(44px, 4.5vw, 66px); }
p { text-wrap: pretty; }
.page-width { width: min(var(--page-width), calc(100% - 112px)); margin-inline: auto; }
.section-space { padding-block: 136px; }
.eyebrow { font-size: 20px; font-weight: 600; letter-spacing: -.025em; margin-bottom: 20px; }
.section-description { color: var(--secondary); font-size: 21px; line-height: 1.45; letter-spacing: -.025em; }
.text-link { color: var(--blue); display: inline-flex; align-items: center; gap: 7px; min-height: 44px; }
.text-link span { display: inline-block; font-size: 1.35em; line-height: 1; transition: transform .2s; }
.text-link:hover span { transform: translateX(3px); }
.button { display: inline-flex; justify-content: center; align-items: center; min-height: 50px; padding: 12px 25px; border-radius: 99px; background: var(--blue); color: var(--white); font-size: 17px; font-weight: 500; line-height: 1.4; transition: background .2s, transform .2s; }
.button:hover { background: var(--blue-hover); text-decoration: none; }
.button:active { transform: scale(.98); }
.actions { display: flex; align-items: center; justify-content: center; gap: 30px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 20px; top: -100px; z-index: 20; padding: 12px 20px; background: var(--white); color: var(--ink); }
.skip-link:focus { top: 12px; }

/* Demo attribution sits outside the sticky navigation and resets on refresh. */
.demo-notice { background: #edf0ed; color: var(--ink); font-size: 13px; }
.demo-notice-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 44px; }
.demo-notice p { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.demo-brand { display: inline-flex; align-items: center; gap: 9px; min-height: 44px; font-weight: 600; white-space: nowrap; }
.demo-brand img { flex-shrink: 0; }
.demo-dismiss { display: grid; place-items: center; flex-shrink: 0; width: 44px; height: 44px; padding: 0; border: 0; background: transparent; color: var(--ink); font-size: 26px; line-height: 1; }
.demo-dismiss:hover { background: #dfe4df; border-radius: 8px; }
.demo-credit { display: flex; align-items: center; gap: 28px; margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--line); }
.demo-credit p { color: var(--secondary); font-size: 13px; }
.demo-portfolio-link { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; margin-left: auto; font-size: 13px; text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 767px) {
  .demo-notice-detail { display: none; }
  .demo-credit { flex-wrap: wrap; gap: 12px 24px; }
  .demo-credit p { width: 100%; }
  .demo-portfolio-link { margin-left: 0; }
}
.site-header { position: sticky; top: 0; z-index: 10; background: rgb(255 255 255 / .96); border-bottom: 1px solid rgb(29 29 31 / .08); }
@supports (backdrop-filter: blur(20px)) {
  .site-header { background: rgb(255 255 255 / .92); backdrop-filter: blur(20px); }
}
.nav-inner { width: min(var(--page-width), calc(100% - 112px)); height: 58px; margin-inline: auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.wordmark { font-size: 18px; font-weight: 650; letter-spacing: -.045em; white-space: nowrap; }
.wordmark:hover { text-decoration: none; }
.desktop-nav { display: flex; align-items: center; gap: 36px; }
.desktop-nav a, .languages a { min-height: 44px; display: inline-flex; align-items: center; font-size: 13px; }
.languages { display: flex; align-items: center; gap: 10px; }
.languages span { color: var(--secondary); font-size: 12px; }
.languages a[aria-current] { font-weight: 650; }
.mobile-menu, .mobile-break { display: none; }

.hero-copy { text-align: center; padding-block: 64px 58px; }
.hero .eyebrow { margin-bottom: 17px; font-size: 19px; }
h1 { font-size: clamp(64px, 6.8vw, 98px); }
.hero-description { margin: 25px auto 26px; font-size: 22px; line-height: 1.45; letter-spacing: -.025em; }
.cinema { position: relative; isolation: isolate; width: 100%; aspect-ratio: 16 / 7; overflow: hidden; background: var(--light); }
/* The supplied poster extends the film's own backdrop while its subject is framed smaller. */
.cinema::before { content: ""; position: absolute; inset: -40px; background: url("assets/images/home/hero-video-poster.jpg") center / cover; filter: blur(36px); }
.film-frame { position: absolute; inset: 0; transform: translateY(-3%) scale(.84); mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent), linear-gradient(to bottom, transparent, #000 8%, #000 92%, transparent); mask-composite: intersect; }
.film-poster, #product-film { position: absolute; width: 100%; height: 100%; object-fit: cover; object-position: center 54%; }
#product-film { opacity: 0; }
.cinema.has-video #product-film { opacity: 1; }

.flagship { display: grid; grid-template-columns: .9fr 1.3fr; align-items: center; gap: 20px; }
.flagship-heading { position: relative; }
.flagship .section-description { max-width: 330px; margin-top: 28px; }
.flagship-heading .text-link { margin-top: 18px; }
.product-stage { min-width: 0; }
.product-viewport { position: relative; }
.product-viewport > .gallery-outgoing { position: absolute; inset: 0; pointer-events: none; }
.product-viewport > img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.view-controls { display: flex; justify-content: center; gap: 4px; width: fit-content; margin: 0 auto; padding: 5px; border-radius: 99px; background: var(--light); }
.view-controls button { border: 0; background: transparent; color: var(--secondary); border-radius: 99px; padding: 10px 20px; min-height: 44px; font-size: 14px; }
.view-controls button[aria-pressed="true"] { color: var(--white); background: var(--ink); }
.view-controls button:hover:not([aria-pressed="true"]) { color: var(--ink); }

.feature-section { background: var(--light); padding-block: 88px; }
.feature-section .text-link, .collection .text-link { color: var(--blue-hover); }
.feature-layout { display: grid; grid-template-columns: 1fr; justify-items: center; gap: 36px; }
.warmth .feature-copy { grid-row: 1; text-align: center; }
.warmth .feature-copy > p:not(.eyebrow) { max-width: 520px; margin-inline: auto; }
.warmth-image { grid-row: 2; width: 100%; overflow: hidden; }
.feature-copy > p:not(.eyebrow) { color: var(--secondary); font-size: 21px; line-height: 1.5; letter-spacing: -.025em; margin-top: 26px; max-width: 370px; }
.feature-copy .text-link { margin-top: 19px; }
.warmth-image img { width: 100%; }
.control-layout { display: grid; grid-template-columns: 1fr 1.15fr; align-items: center; gap: 100px; }
.control-image { overflow: hidden; }
.control-image img { width: 100%; }

.collection { --lineup-gutter: clamp(24px, 5.5vw, 112px); background: var(--light); }
.collection > .page-width { width: calc(100% - 2 * var(--lineup-gutter)); }
.collection-intro { display: flex; justify-content: space-between; align-items: flex-start; gap: 32px; }
.collection-intro .section-description { margin-top: 20px; }
.collection-intro > .text-link { flex-shrink: 0; margin-top: 10px; }
.product-lineup {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  margin-top: 56px;
}
.product { min-width: 0; text-align: center; }
.product-photo { display: block; aspect-ratio: 1 / 1.06; margin-bottom: 32px; overflow: hidden; border-radius: 28px; background: #f9f9f9; }
.product-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.product-photo:hover img { transform: scale(1.035); }
.product h3 { font-size: 30px; letter-spacing: -.035em; line-height: 1.2; }
.product h3 span { display: block; margin-top: 6px; font-weight: 500; font-size: 17px; letter-spacing: -.015em; }
.product-description { margin: 20px auto 0; padding-inline: 16px; min-height: 54px; font-size: 18px; line-height: 1.5; }
.product-price { min-height: 30px; margin-block: 24px 0; font-size: 17px; font-weight: 600; }
.product-price a { text-decoration: underline; text-underline-offset: 3px; }
.product-price sup { margin-left: 2px; font-size: 10px; }
.product-price sup a { display: inline-block; padding: 5px; }
.product-action { margin-top: 28px; min-height: 44px; padding: 11px 24px; font-size: 16px; }
.product-detail { border-top: 1px solid var(--line); margin: 32px 16px 0; padding-top: 24px; font-size: 15px; line-height: 1.7; }
.product-detail p + p { margin-top: 16px; color: var(--secondary); min-height: 51px; }
.price-note { color: var(--secondary); font-size: 13px; line-height: 1.5; max-width: 880px; margin-top: 32px; }

.klein-difference { display: grid; grid-template-columns: 1.05fr 1fr; gap: 100px; }
.difference-intro .section-description { max-width: 370px; margin-top: 26px; }
.difference-intro .text-link { margin-top: 16px; }
.service-row { padding-block: 32px; border-bottom: 1px solid var(--line); }
.service-row:first-child { padding-top: 0; }
.service-row:last-child { border-bottom: 0; padding-bottom: 0; }
.service-row h3 { font-size: 25px; line-height: 1.2; letter-spacing: -.035em; }
.service-row p { margin-top: 12px; color: var(--secondary); font-size: 17px; }
.service-row .text-link { font-size: 16px; margin-top: 9px; }
.service-row .chinese-line { color: var(--ink); }

.final-cta { text-align: center; padding-block: 132px 128px; background: #000; color: var(--light); }
.final-cta h2 { font-size: clamp(52px, 6.5vw, 92px); }
.final-cta .eyebrow { color: #a1a1a6; }
.final-cta p:not(.eyebrow) { color: #a1a1a6; font-size: 23px; line-height: 1.4; margin-top: 28px; letter-spacing: -.025em; }
.final-cta .button { margin-top: 32px; }
.contact-alternative { display: flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; width: fit-content; margin: 15px auto 0; font-size: 16px; }
.final-cta :focus-visible { outline-color: white; }
.site-footer { background: var(--light); padding-block: 48px 24px; }
.footer-main { display: flex; align-items: center; gap: 28px; }
.footer-main > p { color: var(--secondary); font-size: 14px; }
.footer-main nav { display: flex; gap: 24px; margin-left: auto; }
.footer-main nav a { min-height: 44px; display: inline-flex; align-items: center; font-size: 13px; }
.footer-notes { max-width: 880px; margin-top: 25px; color: var(--secondary); font-size: 12px; line-height: 1.5; }
.footer-notes p + p { margin-top: 10px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 20px; border-top: 1px solid var(--line); margin-top: 28px; padding-top: 16px; color: var(--secondary); font-size: 12px; }
.footer-bottom a { display: inline-flex; gap: 7px; align-items: center; min-height: 44px; color: var(--ink); }

@media (prefers-reduced-motion: no-preference) {
  .reveal.is-pending { opacity: 0; transform: translateY(24px); }
  .reveal { transition: opacity .7s ease, transform .7s cubic-bezier(.2, .65, .3, 1); }
}
@media (max-width: 1199px) {
  .product-lineup { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 64px; }
}
@media (max-width: 1100px) {
  .page-width, .nav-inner { width: calc(100% - 80px); }
  .desktop-nav { gap: 24px; }
  .section-space { padding-block: 100px; }
  .flagship { grid-template-columns: 1fr 1.1fr; }
  .feature-layout, .control-layout { gap: 48px; }
  .collection { --lineup-gutter: 40px; }
  .klein-difference { gap: 60px; }
  .footer-main { flex-wrap: wrap; gap: 14px 24px; }
  .footer-main nav { width: 100%; margin-left: 0; }
}
@media (max-width: 900px) {
  .nav-inner { gap: 20px; }
  .desktop-nav { gap: 16px; }
  .desktop-nav a { font-size: 12px; }
  .wordmark { font-size: 17px; }
  .collection-intro { flex-direction: column; gap: 12px; }
  .collection-intro > .text-link { margin-top: 0; }
  .feature-copy > p:not(.eyebrow), .section-description { font-size: 19px; }
  .klein-difference { grid-template-columns: 1fr; gap: 56px; }
  .difference-intro .section-description { max-width: 480px; }
}
@media (max-width: 767px) {
  html { scroll-padding-top: 76px; }
  .page-width, .nav-inner { width: calc(100% - 48px); }
  .nav-inner { height: 58px; gap: 10px; }
  .desktop-nav { display: none; }
  .languages { margin-left: auto; gap: 9px; }
  .languages a { font-size: 12px; min-width: 25px; justify-content: center; }
  .languages a:last-child { min-width: 34px; }
  .mobile-menu { display: block; }
  .mobile-menu summary { display: grid; place-items: center; width: 44px; height: 44px; cursor: pointer; list-style: none; }
  .mobile-menu summary::-webkit-details-marker { display: none; }
  .menu-lines { position: relative; width: 18px; height: 10px; border-block: 1.5px solid var(--ink); }
  .mobile-menu[open] .menu-lines { height: 18px; border: 0; }
  .mobile-menu[open] .menu-lines::before, .mobile-menu[open] .menu-lines::after { content: ""; position: absolute; top: 8px; left: 0; width: 18px; height: 1.5px; background: var(--ink); transform: rotate(45deg); }
  .mobile-menu[open] .menu-lines::after { transform: rotate(-45deg); }
  .mobile-nav { position: absolute; left: 0; right: 0; top: 100%; padding: 16px 24px 28px; border-bottom: 1px solid var(--line); background: var(--white); }
  .mobile-nav a { display: flex; align-items: center; min-height: 56px; font-size: 25px; font-weight: 550; letter-spacing: -.03em; }
  .hero-copy { padding-block: 48px 42px; }
  .hero .eyebrow { font-size: 16px; margin-bottom: 17px; }
  h1 { font-size: clamp(43px, 8.6vw, 66px); letter-spacing: -.05em; }
  h2 { font-size: clamp(42px, 7.5vw, 58px); }
  .hero-description { font-size: 19px; line-height: 1.45; margin-block: 23px; }
  .mobile-break { display: inline; }
  .actions { flex-direction: column; gap: 9px; }
  .actions .text-link { font-size: 16px; }
  .cinema { aspect-ratio: 1.16; }
  .film-poster, #product-film { object-position: center; }
  .section-space { padding-block: 76px; }
  .flagship { grid-template-columns: 1fr; gap: 12px; }
  .eyebrow { font-size: 17px; margin-bottom: 17px; }
  .flagship .section-description { margin-top: 23px; max-width: 370px; }
  .product-viewport > img { width: min(100%, 500px); margin-inline: auto; }
  .view-controls { margin-top: 8px; }
  .view-controls button { padding-inline: 19px; }
  .feature-section { padding-block: 74px 60px; }
  .feature-layout, .control-layout { grid-template-columns: 1fr; gap: 40px; }
  .warmth-image { order: 2; margin-inline: auto; }
  .feature-copy > p:not(.eyebrow) { max-width: 390px; font-size: 19px; }
  .control-image { margin-top: 7px; }
  .collection { --lineup-gutter: 24px; }
  .product-lineup { column-gap: 20px; margin-top: 32px; }
  .product-photo { border-radius: 24px; margin-bottom: 28px; }
  .product h3 { font-size: 28px; }
  .product h3 span { font-size: 15px; }
  .product-description { font-size: 17px; min-height: 51px; padding-inline: 8px; }
  .product-price { font-size: 16px; }
  .klein-difference { gap: 42px; }
  .service-row h3 { font-size: 24px; }
  .service-row p { font-size: 17px; }
  .final-cta { padding-block: 84px 80px; }
  .final-cta h2 { font-size: clamp(44px, 9vw, 68px); }
  .final-cta p:not(.eyebrow) { font-size: 20px; margin-top: 25px; }
  .desktop-break { display: none; }
  .site-footer { padding-top: 36px; }
  .footer-main { display: block; }
  .footer-main > p { margin-top: 8px; }
  .footer-main nav { gap: 23px; margin-top: 14px; flex-wrap: wrap; }
  .footer-notes { margin-top: 18px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 0; }
}
@media (max-width: 599px) {
  .product-lineup { grid-template-columns: 1fr; }
}
@media (max-width: 374px) {
  .page-width, .nav-inner { width: calc(100% - 36px); }
  .nav-inner { gap: 4px; }
  .wordmark { font-size: 16px; }
  .languages { gap: 4px; }
  h1 { font-size: 39px; }
  .collection { --lineup-gutter: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
  .reveal.is-pending { opacity: 1; transform: none; }
  .product-photo:hover img, .text-link:hover span, .button:active { transform: none; }
}
@media (prefers-reduced-transparency: reduce) {
  .site-header { background: var(--white); backdrop-filter: none; }
}