:root {
  --ink: #131313;
  --paper: #f5f4f0;
  --white: #ffffff;
  --muted: #696967;
  --line: rgba(19, 19, 19, 0.16);
  --gold: #9b7a43;
  --glass: rgba(255, 255, 255, 0.54);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --serif: Didot, "Bodoni 72", Baskerville, "Times New Roman", "Songti SC", serif;
  --sans: "Helvetica Neue", Helvetica, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); overflow-x: hidden; }
::selection { background: rgba(155, 122, 67, .24); color: var(--ink); }
html { scrollbar-color: rgba(155, 122, 67, .72) #e9e8e4; scrollbar-width: thin; }
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: #e9e8e4; }
::-webkit-scrollbar-thumb { border: 3px solid #e9e8e4; border-radius: 999px; background: rgba(155, 122, 67, .72); }
button, input { font: inherit; }
input { caret-color: var(--gold); }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .48; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
[data-parallax] { --parallax-y: 0px; }
[data-parallax].is-parallax-active { will-change: transform; }

.skip-link { position: fixed; left: 16px; top: -80px; z-index: 1000; padding: 12px 16px; background: var(--ink); color: white; }
.skip-link:focus { top: 16px; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 4px; }

.site-header { position: fixed; inset: 18px 24px auto; z-index: 100; min-height: 64px; padding: 0 16px 0 22px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; border: 1px solid rgba(255,255,255,.72); background: rgba(249,249,247,.63); box-shadow: 0 16px 50px rgba(20,20,20,.08), inset 0 1px 0 rgba(255,255,255,.88); backdrop-filter: blur(22px) saturate(135%); -webkit-backdrop-filter: blur(22px) saturate(135%); transition: background .3s ease, transform .3s ease; }
.site-header.is-scrolled { background: rgba(249,249,247,.88); }
.wordmark { display: inline-flex; width: max-content; align-items: baseline; gap: 10px; }
.wordmark-cn { font-family: "Songti SC", var(--serif); font-size: 25px; font-weight: 600; }
.wordmark-en { font-family: var(--serif); font-size: 13px; letter-spacing: .12em; }
.desktop-nav { display: flex; align-items: center; gap: 36px; font-size: 13px; }
.desktop-nav a, .footer-links a { position: relative; padding: 22px 0; }
.desktop-nav a::after, .footer-links a::after { content: ""; position: absolute; inset: auto 0 16px; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform .28s var(--ease); }
.desktop-nav a:hover::after, .footer-links a:hover::after { transform: scaleX(1); transform-origin: left; }
.header-actions { justify-self: end; display: flex; align-items: center; gap: 8px; }
.language-switch { height: 34px; padding: 3px; display: flex; align-items: center; border: 1px solid rgba(19,19,19,.18); background: rgba(255,255,255,.34); }
.language-switch button { min-width: 34px; height: 26px; border: 0; background: transparent; color: var(--muted); font-size: 10px; transition: color .2s ease, background .2s ease; }
.language-switch button.is-active { background: var(--ink); color: white; }
.menu-button { display: none; width: 44px; height: 44px; border: 0; background: none; padding: 12px; }
.menu-button span { display: block; width: 20px; height: 1px; margin: 6px auto; background: currentColor; transition: transform .25s ease; }
.mobile-nav { display: none; }

.hero { position: relative; min-height: min(920px, 94svh); overflow: hidden; background: #eeefed; }
.hero-image { position: absolute; inset: -7% 0 -7% auto; width: 66%; height: 114%; object-fit: cover; object-position: 51% 39%; transform: translate3d(0, var(--parallax-y), 0) scale(1.015); }
.hero-wash { position: absolute; inset: -4% auto -4% 0; width: 48%; background: rgba(239,240,238,.96); transform: translate3d(0, var(--parallax-y), 0); }
.hero-content { position: relative; z-index: 2; width: min(48%, 660px); padding: clamp(180px, 22vh, 250px) 5vw 100px 8vw; transform: translate3d(0, var(--parallax-y), 0); }
.hero h1 { margin: 0; font-family: var(--serif); font-weight: 400; font-size: clamp(64px, 8vw, 126px); line-height: .82; letter-spacing: 0; }
.hero h1 span { display: block; margin-bottom: 16px; font-family: "Songti SC", var(--serif); font-size: .58em; }
.hero h1 span:empty { display: none; }
.hero-subtitle { margin: 28px 0 18px; font-family: "Songti SC", var(--serif); font-size: clamp(24px, 2vw, 36px); }
.hero-code, .product-code { margin: 0 0 18px; color: var(--gold); font-size: 10px; font-weight: 600; letter-spacing: .17em; }
.hero-copy { max-width: 450px; margin: 0; color: #4f4f4c; font-size: 16px; line-height: 1.85; }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 40px; }
.button { min-height: 52px; border: 1px solid transparent; padding: 0 26px; display: inline-flex; align-items: center; justify-content: center; transition: color .25s ease, background .25s ease, border-color .25s ease; }
.button-dark { background: var(--ink); color: white; }
.button-dark:hover:not(:disabled) { background: #393939; }
.text-link { min-height: 48px; border: 0; background: none; padding: 0; display: inline-flex; align-items: center; gap: 10px; color: var(--ink); }
.text-link svg, .scroll-cue svg, .email-row button svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; transition: transform .25s var(--ease); }
.text-link:hover svg { transform: translate(4px, -4px); }
.glass-panel { border: 1px solid rgba(255,255,255,.58); background: var(--glass); box-shadow: 0 22px 70px rgba(24,24,24,.12), inset 0 1px 0 rgba(255,255,255,.88); backdrop-filter: blur(24px) saturate(140%); -webkit-backdrop-filter: blur(24px) saturate(140%); }
.hero-meta { position: absolute; z-index: 3; right: 4vw; bottom: 44px; display: flex; min-width: 440px; padding: 20px 24px; transform: translate3d(0, var(--parallax-y), 0); }
.hero-meta div { flex: 1; padding: 0 22px; border-left: 1px solid rgba(19,19,19,.16); }
.hero-meta div:first-child { border-left: 0; }
.hero-meta span { display: block; margin-bottom: 6px; color: var(--gold); font-family: var(--serif); font-style: italic; font-size: 13px; }
.hero-meta strong { font-size: 12px; font-weight: 500; }
.scroll-cue { position: absolute; z-index: 3; left: 8vw; bottom: 36px; display: inline-flex; align-items: center; gap: 8px; font-size: 11px; letter-spacing: .1em; }
.scroll-cue:hover svg { transform: translateY(4px); }

.manifesto { max-width: 1100px; margin: 0 auto; padding: 152px 64px; text-align: center; }
.manifesto h2, .section-heading h2, .product-intro h2, .mechanism h2, .story h2, .membership h2 { margin: 0; font-family: "Songti SC", var(--serif); font-size: clamp(42px, 5vw, 76px); font-weight: 400; line-height: 1.16; }
.hero h1, .manifesto h2, .section-heading h2, .product-intro h2, .mechanism h2, .story h2, .membership h2 { text-wrap: balance; }
.hero-copy, .manifesto p, .product-note, .product-disclaimer, .mechanism-copy > p, .section-heading > p, .story-copy > p, .values p, .membership-content > p { text-wrap: pretty; }
.manifesto > p:last-child { max-width: 760px; margin: 36px auto 0; color: var(--muted); font-size: 17px; line-height: 2; }

.product-band { padding: 112px max(5vw, 28px); display: grid; grid-template-columns: minmax(0, 1.14fr) minmax(360px, .86fr); gap: clamp(56px, 8vw, 130px); background: #fff; }
.product-visual { min-width: 0; }
.image-stage { position: relative; aspect-ratio: 1 / 1.02; overflow: hidden; background: #f4f4f2; }
.image-stage > img { width: 100%; height: 112%; margin-top: -6%; object-fit: cover; object-position: center 29%; transform: translate3d(0, var(--parallax-y), 0) scale(1.025); transition: opacity .2s ease, filter .5s var(--ease); }
.image-stage:hover > img { filter: saturate(1.08) contrast(1.015); }
.edition-stamp { position: absolute; right: 26px; bottom: 24px; width: 78px; height: 78px; border: 1px solid rgba(19,19,19,.38); border-radius: 50%; display: grid; place-items: center; text-align: center; font-family: var(--serif); font-size: 11px; line-height: 1.45; transform: translate3d(0, var(--parallax-y), 0); }
.thumbnail-row { display: flex; gap: 12px; margin-top: 14px; }
.thumbnail { width: 76px; height: 76px; border: 1px solid transparent; background: #f3f3f1; padding: 0; overflow: hidden; }
.thumbnail img { width: 100%; height: 100%; object-fit: cover; object-position: center 30%; }
.thumbnail.is-active { border-color: var(--ink); }
.product-intro { align-self: center; max-width: 620px; }
.product-intro h2 { font-size: clamp(42px, 4vw, 64px); }
.product-code { margin: 14px 0 0; }
.product-note { max-width: 500px; margin: 24px 0 34px; color: var(--muted); line-height: 1.9; }
.product-facts { margin: 0; border-top: 1px solid var(--line); }
.product-facts div { padding: 18px 0; display: grid; grid-template-columns: minmax(110px, .7fr) 1.3fr; gap: 24px; border-bottom: 1px solid var(--line); }
.product-facts dt { color: var(--gold); font-size: 10px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; }
.product-facts dd { margin: 0; font-family: "Songti SC", var(--serif); font-size: 17px; line-height: 1.5; }
.product-links { margin-top: 34px; display: flex; align-items: center; gap: 28px; }
.product-disclaimer { margin: 24px 0 0; max-width: 530px; color: var(--muted); font-size: 11px; line-height: 1.7; }

.mechanism { min-height: 860px; display: grid; grid-template-columns: .82fr 1.18fr; background: var(--ink); color: white; }
.mechanism-copy { align-self: center; padding: 100px 7vw; }
.mechanism-copy > p { max-width: 520px; margin: 30px 0 50px; color: #aaa9a5; font-size: 16px; line-height: 1.9; }
.specs { padding-top: 28px; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(255,255,255,.18); }
.specs div { display: flex; flex-direction: column; gap: 9px; }
.specs strong { font-family: var(--serif); font-size: 28px; font-weight: 400; }
.specs span { color: #9d9c99; font-size: 11px; }
.mechanism-image { position: relative; min-height: 660px; overflow: hidden; }
.mechanism-image > img { width: 100%; height: 116%; margin-top: -8%; object-fit: cover; object-position: center 54%; filter: saturate(.82) contrast(1.04); transform: translate3d(0, var(--parallax-y), 0) scale(1.02); }
.detail-tag { position: absolute; left: 36px; bottom: 36px; min-width: 200px; padding: 18px 22px; color: var(--ink); transform: translate3d(0, var(--parallax-y), 0); }
.detail-tag span { display: block; margin-bottom: 5px; color: var(--gold); font-size: 9px; letter-spacing: .15em; }
.detail-tag strong { font-family: "Songti SC", var(--serif); font-size: 18px; font-weight: 500; }

.collection { padding: 150px max(5vw, 28px); background: #eeefec; }
.section-heading { margin-bottom: 60px; display: flex; justify-content: space-between; align-items: end; }
.section-heading h2 { font-size: clamp(48px, 6vw, 82px); }
.section-heading > p { max-width: 300px; margin: 0 0 8px; color: var(--muted); }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; align-items: start; }
.product-card a { position: relative; display: block; aspect-ratio: .82 / 1; overflow: hidden; background: #f7f7f5; }
.product-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.product-card:not(.featured-card) img { object-fit: contain; padding: 7%; }
.product-card:not(.featured-card) img.archive-portrait { object-fit: cover; object-position: center 48%; padding: 15%; }
.product-card a:hover img { transform: scale(1.035); }
.product-card > div { padding: 20px 4px; }
.product-card p { grid-column: 1 / -1; margin: 0 0 8px; color: var(--gold); font-size: 9px; letter-spacing: .16em; }
.product-card h3 { margin: 0; font-family: "Songti SC", var(--serif); font-size: 20px; font-weight: 500; }

html[lang="en"] .hero-subtitle,
html[lang="en"] .manifesto h2,
html[lang="en"] .product-intro h2,
html[lang="en"] .mechanism h2,
html[lang="en"] .section-heading h2,
html[lang="en"] .story h2,
html[lang="en"] .membership h2,
html[lang="en"] .product-card h3,
html[lang="en"] .values h3 { font-family: var(--serif); }
html[lang="en"] .product-facts dd { font-family: var(--serif); }

.story { display: grid; grid-template-columns: 1fr 1fr; min-height: 900px; background: #fff; }
.story-image { min-height: 700px; overflow: hidden; }
.story-image img { width: 100%; height: 116%; margin-top: -8%; object-fit: cover; object-position: center 67%; filter: grayscale(.88) contrast(1.05); transform: translate3d(0, var(--parallax-y), 0) scale(1.02); }
.story-copy { align-self: center; padding: 100px clamp(48px, 8vw, 140px); }
.story-copy > p { margin: 32px 0 46px; color: var(--muted); line-height: 1.9; }
.values { border-top: 1px solid var(--line); }
.values article { padding: 24px 0; display: grid; grid-template-columns: 50px 1fr; border-bottom: 1px solid var(--line); }
.values article > span { color: var(--gold); font-family: var(--serif); font-style: italic; }
.values h3 { margin: 0 0 8px; font-family: "Songti SC", var(--serif); font-size: 19px; font-weight: 500; }
.values p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }

.membership { position: relative; min-height: 780px; display: grid; place-items: center; overflow: hidden; }
.membership > img { position: absolute; inset: -10% 0; width: 100%; height: 120%; object-fit: cover; object-position: center 45%; filter: brightness(.52) saturate(.72); transform: translate3d(0, var(--parallax-y), 0) scale(1.02); }
.membership-overlay { position: absolute; inset: 0; background: rgba(9,9,9,.22); }
.membership-content { position: relative; width: min(660px, calc(100% - 40px)); padding: 64px; color: white; text-align: center; background: rgba(15,15,15,.28); transform: translate3d(0, var(--parallax-y), 0); }
.membership h2 { font-size: clamp(42px, 5vw, 68px); }
.membership-content > p { max-width: 490px; margin: 24px auto 34px; color: rgba(255,255,255,.78); line-height: 1.8; }
.membership form { text-align: left; }
.membership label { display: block; margin-bottom: 9px; font-size: 11px; }
.email-row { display: grid; grid-template-columns: 1fr auto; background: rgba(255,255,255,.93); }
.email-row input { min-width: 0; height: 58px; border: 0; background: transparent; padding: 0 18px; color: var(--ink); font-size: 16px; }
.email-row button { min-width: 145px; border: 0; background: var(--ink); color: white; padding: 0 20px; }
.email-row button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; }
.form-message { min-height: 20px; margin: 9px 0 0; font-size: 12px; }
.membership small { display: block; margin-top: 12px; color: rgba(255,255,255,.54); font-size: 10px; }

footer { padding: 52px max(5vw, 28px); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; background: var(--ink); color: white; }
.footer-links { display: flex; gap: 34px; font-size: 12px; }
.footer-links a::after { bottom: 10px; }
footer > p { justify-self: end; margin: 0; color: #777; font-size: 9px; letter-spacing: .12em; }

@media (max-width: 980px) {
  .site-header { inset: 12px 12px auto; grid-template-columns: 1fr auto; }
  .desktop-nav { display: none; }
  .menu-button { display: block; }
  .mobile-nav { position: absolute; top: calc(100% + 8px); left: 0; right: 0; padding: 18px 22px; display: grid; background: rgba(249,249,247,.96); border: 1px solid rgba(255,255,255,.75); backdrop-filter: blur(22px); opacity: 0; visibility: hidden; transform: translateY(-8px); transition: opacity .25s, transform .25s, visibility .25s; }
  .mobile-nav.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
  .mobile-nav a { min-height: 48px; display: flex; align-items: center; border-bottom: 1px solid var(--line); }
  .hero-image { width: 72%; }
  .hero-wash { width: 55%; }
  .hero-content { width: 58%; padding-left: 6vw; }
  .hero-meta { right: 20px; min-width: 390px; }
  .scroll-cue { left: 6vw; }
  .product-band { grid-template-columns: 1fr; }
  .product-intro { max-width: none; padding: 20px 3vw 0; }
  .product-grid { grid-template-columns: repeat(3, 1fr); }
  .mechanism { grid-template-columns: 1fr; }
  .mechanism-copy { order: 2; }
  .mechanism-image { height: 720px; }
  .story { grid-template-columns: 1fr; }
  .story-image { height: 760px; }
  footer { grid-template-columns: 1fr auto; gap: 34px; }
  footer > p { grid-column: 1 / -1; justify-self: start; }
}

@media (max-width: 680px) {
  .site-header { min-height: 58px; padding-left: 16px; }
  .wordmark-cn { font-size: 21px; }
  .wordmark-en { font-size: 11px; }
  .hero { min-height: 92svh; background: #eeefed; }
  .hero-image { inset: -4% 0 auto; width: 100%; height: 69%; object-position: center 27%; }
  .hero-wash { inset: auto 0 -3%; width: 100%; height: 55%; background: rgba(239,240,238,.96); }
  .hero-content { width: 100%; padding: 52svh 20px 90px; }
  .hero-code { margin-bottom: 12px; }
  .hero h1 { font-size: clamp(56px, 19vw, 76px); }
  .hero h1 span { font-size: .5em; margin-bottom: 8px; }
  .hero-subtitle { margin: 16px 0 10px; font-size: 23px; }
  .hero-copy { font-size: 14px; line-height: 1.7; }
  .hero-actions { margin-top: 24px; gap: 18px; }
  .button { min-height: 50px; padding-inline: 22px; }
  .text-link { font-size: 13px; }
  .hero-meta { display: none; }
  .scroll-cue { display: none; }
  .manifesto { padding: 100px 24px; }
  .manifesto h2 { font-size: 44px; }
  .manifesto > p:last-child { font-size: 15px; line-height: 1.85; }
  .product-band { padding: 72px 16px 90px; gap: 46px; }
  .image-stage { aspect-ratio: .88 / 1; }
  .image-stage > img { object-position: center 32%; }
  .product-intro { padding: 0 4px; }
  .product-intro h2 { font-size: 40px; }
  .product-note { font-size: 14px; }
  .product-links { align-items: flex-start; flex-direction: column; gap: 12px; }
  .mechanism { min-height: 0; }
  .mechanism-image { height: 72svh; min-height: 520px; }
  .mechanism-copy { padding: 74px 24px 86px; }
  .mechanism h2 { font-size: 48px; }
  .specs strong { font-size: 22px; }
  .detail-tag { left: 18px; bottom: 18px; }
  .collection { padding: 96px 16px; }
  .section-heading { align-items: start; margin-bottom: 40px; }
  .section-heading > p { max-width: 120px; text-align: right; font-size: 13px; }
  .section-heading h2 { font-size: 52px; }
  .product-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .product-card h3 { font-size: 17px; }
  .story-image { height: 70svh; min-height: 560px; }
  .story-copy { padding: 86px 24px; }
  .story h2 { font-size: 46px; }
  .membership { min-height: 720px; }
  .membership-content { padding: 48px 22px; }
  .membership h2 { font-size: 44px; }
  .email-row { grid-template-columns: 1fr; background: transparent; gap: 8px; }
  .email-row input { background: rgba(255,255,255,.94); }
  .email-row button { min-height: 54px; }
  footer { grid-template-columns: 1fr; }
  .footer-links { flex-wrap: wrap; gap: 12px 24px; }
  footer > p { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-parallax] { --parallax-y: 0px !important; transform: none !important; will-change: auto !important; }
  .hero-image, .image-stage > img, .mechanism-image > img, .story-image img, .membership > img { transform: scale(1.02) !important; }
}