:root {
  --ink: #101010;
  --muted: #6d6d6d;
  --paper: #fbfbfa;
  --soft: #f1f1f1;
  --line: #e5e5e3;
  --max: 1440px;
  --aqaq-title-cn: "方正黑体_GBK", "FZHei-B01S", "SimHei", "Noto Serif SC", serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Hanken Grotesk", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
img { display: block; width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 88px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(14px);
}
.nav-shell {
  width: min(calc(100% - 96px), var(--max));
  height: 100%;
  margin: auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  column-gap: 40px;
  align-items: center;
}
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links:last-child { justify-content: flex-end; }
.nav-links a {
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  padding: 8px 0;
}
.nav-links a[aria-current="page"] { border-bottom: 1px solid; }
.wordmark {
  font: 400 25px/1 "Libre Caslon Text", serif;
  letter-spacing: -.015em;
  white-space: nowrap;
}
.menu-toggle { display: none; border: 0; background: none; padding: 12px; }

.container { width: min(calc(100% - 96px), var(--max)); margin-inline: auto; }
.eyebrow {
  display: block;
  margin-bottom: 20px;
  font-size: 10px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--muted);
}
.display {
  margin: 0;
  font-family: var(--aqaq-title-cn);
  font-size: clamp(44px, 6vw, 82px);
  font-weight: 400;
  line-height: 1.16;
  letter-spacing: 0;
}
.headline {
  margin: 0;
  font-family: var(--aqaq-title-cn);
  font-size: clamp(34px, 4vw, 58px);
  font-weight: 400;
  line-height: 1.25;
}
.button {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 28px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: white;
  font-size: 11px;
  letter-spacing: .15em;
  text-transform: uppercase;
  transition: .25s ease;
}
.button:hover { background: transparent; color: var(--ink); }
.text-link {
  display: inline-block;
  padding-bottom: 4px;
  border-bottom: 1px solid;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.home-hero {
  min-height: max(760px, calc(100vh - 88px));
  padding: 100px 0 100px;
  display: grid;
  grid-template-columns: .78fr 1.22fr;
  align-items: center;
  gap: clamp(70px, 7vw, 120px);
}
.home-hero-copy { max-width: 510px; }
.home-hero-copy p { max-width: 430px; color: #4d4d4d; }
.home-hero-media {
  justify-self: end;
  width: min(100%, 805px);
  height: min(1080px, calc(100vh - 180px));
  min-height: 620px;
  overflow: hidden;
}
.home-hero-media img {
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: grayscale(1);
}
.home-hero-media img.hero-color-image { filter: none; }

.section { padding: 120px 0; }
.section-soft { background: var(--soft); }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 58px;
}
.section-head h2 {
  margin: 0;
  font-family: var(--aqaq-title-cn);
  font-size: 28px;
  font-weight: 400;
}
.product-triptych {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.product-media {
  position: relative;
  height: 460px;
  overflow: hidden;
  background: linear-gradient(145deg, #f6fbfd 0%, #e6f3f8 55%, #d6ebf3 100%);
}
.product-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(1.07) saturate(.92) contrast(.98);
  transition: opacity .65s cubic-bezier(.22, 1, .36, 1), transform 1s cubic-bezier(.22, 1, .36, 1);
}
.product-image-primary {
  z-index: 1;
  opacity: 1;
}
.product-image-hover {
  z-index: 2;
  opacity: 0;
  transform: scale(1.045);
}
.product-tile:hover .product-image-primary,
.product-tile:focus-visible .product-image-primary {
  opacity: 0;
  transform: scale(1.025);
}
.product-tile:hover .product-image-hover,
.product-tile:focus-visible .product-image-hover {
  opacity: 1;
  transform: scale(1.08);
}
.product-meta { padding-top: 22px; }
.product-meta span { font-size: 10px; letter-spacing: .18em; color: var(--muted); }
.product-meta h3 {
  margin: 8px 0 5px;
  font-family: "FZ YunDong ZhongHei", "Noto Sans SC", sans-serif;
  font-size: clamp(17px, 1.18vw, 20px);
  font-weight: 400;
  line-height: 1.36;
  letter-spacing: 0;
}
.product-meta h3 .aqaq-brand-text,
.catalog-card h2 .aqaq-brand-text {
  display: inline-block;
  margin-right: .08em;
  font-size: .82em;
  line-height: 1;
  vertical-align: .03em;
}
.product-meta p { margin: 0; color: var(--muted); font-size: 12px; }

@media (prefers-reduced-motion: reduce) {
  .product-image { transition: opacity .01ms linear; }
}

.research-split {
  display: grid;
  grid-template-columns: 1fr 1.12fr;
  gap: 80px;
  align-items: center;
}
.research-device { padding: 48px; background: #202529; }
.research-device img { aspect-ratio: .75; object-fit: cover; }
.research-copy { max-width: 510px; }
.research-copy p { color: #555; }
.rituals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
  margin-top: 70px;
}
.ritual {
  min-height: 230px;
  padding: 50px 48px 40px 0;
}
.ritual + .ritual { border-left: 1px solid var(--line); padding-left: 48px; }
.ritual b {
  margin-right: 20px;
  font: italic 32px "Libre Caslon Text", serif;
  color: #d3d3d3;
}
.newsletter { text-align: center; padding: 130px 24px; }
.newsletter form { width: min(520px, 100%); margin: 35px auto 0; display: flex; }
.newsletter input { flex: 1; min-width: 0; border: 1px solid var(--line); background: transparent; padding: 15px; }

.collection-hero {
  padding: 78px 0 55px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: end;
}
.collection-hero p { max-width: 470px; color: #4f4f4f; }
.filters {
  display: flex;
  justify-content: space-between;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: .12em;
}
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 90px 52px;
  padding: 48px 0 130px;
}
.catalog-card { text-align: center; }
.catalog-media {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  background: #e6f3f8;
}
.catalog-card .catalog-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(1.08) saturate(.88) contrast(.98);
  transition: opacity .65s cubic-bezier(.22, 1, .36, 1), transform 1s cubic-bezier(.22, 1, .36, 1);
}
.catalog-image-primary { z-index: 1; opacity: 1; }
.catalog-image-hover { z-index: 2; opacity: 0; transform: scale(1.045); }
.catalog-card:hover .catalog-image-primary,
.catalog-card:focus-visible .catalog-image-primary {
  opacity: 0;
  transform: scale(1.025);
}
.catalog-card:hover .catalog-image-hover,
.catalog-card:focus-visible .catalog-image-hover {
  opacity: 1;
  transform: scale(1.08);
}
.catalog-card small { display: block; margin-top: 20px; color: var(--muted); letter-spacing: .1em; }
.catalog-card h2 {
  margin: 9px 0 4px;
  font-family: "FZ YunDong ZhongHei", var(--aqaq-title-cn);
  font-size: clamp(17px, 1.15vw, 20px);
  font-weight: 400;
  line-height: 1.38;
  letter-spacing: 0;
}
.catalog-card p { margin: 0; color: #555; font-size: 13px; }
.collection-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 80px;
  padding-bottom: 130px;
}
.collection-feature img {
  aspect-ratio: .8;
  object-fit: cover;
  filter: grayscale(1) contrast(1.04);
}
.collection-feature img.collection-feature-image {
  filter: none;
}

.heritage-hero { padding: 125px 0 0; }
.heritage-hero-reference {
  position: relative;
  min-height: max(720px, calc(100vh - 88px));
  padding: 0;
  overflow: hidden;
  background: #181818;
}
.heritage-hero-reference::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0, 0, 0, .42) 0%, rgba(0, 0, 0, .14) 46%, rgba(0, 0, 0, .04) 100%);
  content: "";
}
.heritage-hero-image {
  position: absolute;
  inset: 0;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(.82) contrast(1.03);
  transform: scale(1.02);
}
.heritage-hero-overlay {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 160px), 1440px);
  min-height: inherit;
  margin: 0 auto;
  padding-top: clamp(260px, 34vh, 480px);
  color: #fff;
}
.heritage-hero-overlay .eyebrow { color: rgba(255, 255, 255, .72); }
.heritage-hero-overlay .display {
  max-width: 640px;
  font-size: clamp(54px, 6vw, 96px);
}
.heritage-hero-overlay p {
  max-width: 580px;
  color: rgba(255, 255, 255, .8);
}
.heritage-hero-overlay .button {
  margin-top: 20px;
  border-color: #fff;
  background: #fff;
  color: #111;
}
.heritage-hero-overlay .button:hover {
  background: transparent;
  color: #fff;
}
.heritage-intro { max-width: 700px; padding-bottom: 55px; }
.heritage-intro p { color: #555; max-width: 620px; }
.heritage-banner img { height: 340px; object-fit: cover; filter: saturate(.78) brightness(1.05); }
.quote {
  padding: 105px 20px;
  text-align: center;
  font: italic clamp(22px, 3vw, 36px)/1.55 "Noto Serif SC", serif;
}
.heritage-stories {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 58px;
  padding-bottom: 120px;
}
.story img { filter: saturate(.72) brightness(1.06) contrast(.98); }
.story-large img { aspect-ratio: .79; object-fit: cover; }
.story-small img { aspect-ratio: 1; object-fit: cover; }
.story-architecture { margin-top: 85px; }
.story h2 {
  margin: 18px 0 8px;
  font-family: var(--aqaq-title-cn);
  font-size: 24px;
  font-weight: 400;
}
.story p { color: #666; font-size: 13px; }
.heritage-rituals { background: white; }
.ritual-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.ritual-card img { aspect-ratio: 1.25; object-fit: cover; }
.ritual-card:first-child img { filter: grayscale(1) contrast(1.04); }
.ritual-card:nth-child(2) img { filter: saturate(.78) brightness(1.08); }
.ritual-card:nth-child(3) img { filter: saturate(.76) brightness(1.06); }
.story img.heritage-composite-img,
.ritual-card img.heritage-composite-img {
  height: auto;
  filter: none !important;
}
.story img.authentic-product-img,
.ritual-card img.authentic-product-img {
  object-fit: contain;
  background: #f5fbfd;
  filter: none !important;
}
.ritual-card h3 { font-family: var(--aqaq-title-cn); font-weight: 400; }
.heritage-closing { padding: 140px 20px; text-align: center; }

.site-footer { border-top: 1px solid var(--line); padding: 70px 0 40px; }
.footer-shell { display: flex; justify-content: space-between; align-items: center; gap: 30px; }
.footer-links { display: flex; gap: 28px; font-size: 10px; letter-spacing: .12em; }
.copyright { color: var(--muted); font-size: 9px; letter-spacing: .1em; text-transform: uppercase; }
.copyright a { color: inherit; text-decoration: none; margin-left: .65em; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .8s ease, transform .8s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 800px) {
  .site-header { height: 72px; }
  .nav-shell { width: calc(100% - 36px); grid-template-columns: 1fr auto; }
  .wordmark { grid-column: 1; grid-row: 1; justify-self: start; }
  .menu-toggle { display: block; grid-column: 2; }
  .nav-links {
    display: none;
    position: absolute;
    inset: 72px 0 auto;
    padding: 24px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
  }
  .nav-links:first-child { display: none; }
  .nav-links:last-child.open { display: flex; }
  .container { width: calc(100% - 40px); }
  .home-hero {
    min-height: auto;
    padding: 110px 0 70px;
    gap: 52px;
  }
  .home-hero-media {
    width: 100%;
    height: auto;
    min-height: 0;
    aspect-ratio: .758;
  }
  .heritage-hero-reference { min-height: 720px; }
  .heritage-hero-overlay {
    width: calc(100% - 48px);
    padding-top: 300px;
  }
  .home-hero, .research-split, .collection-hero, .collection-feature, .heritage-stories {
    grid-template-columns: 1fr;
    gap: 42px;
  }
  .home-hero { padding: 90px 0 70px; min-height: auto; }
  .home-hero-media { padding-top: 10px; }
  .section { padding: 82px 0; }
  .section-head { align-items: flex-start; gap: 20px; }
  .product-triptych, .catalog-grid, .ritual-grid { grid-template-columns: 1fr; }
  .product-tile img { height: auto; }
  .catalog-grid { gap: 65px; }
  .rituals { grid-template-columns: 1fr; }
  .ritual + .ritual { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; }
  .heritage-banner img { height: 220px; }
  .footer-shell { flex-direction: column; align-items: flex-start; }
  .footer-links { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}