/* RESSAK China — self-hosted, mobile-first, no external dependency */
:root {
  --paper: #fbfaf9;
  --paper-deep: #f2efea;
  --ink: #1c1a17;
  --soft: #37332e;
  --muted: #78736d;
  --line: #e7e4df;
  --white: #fff;
  --accent: #9c8269;
  --display: "Songti SC", "STSong", "SimSun", "Noto Serif CJK SC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial, sans-serif;
  --shell: min(100% - 40px, 1340px);
  --space: clamp(88px, 12vw, 180px);
  --ease: cubic-bezier(.22, 1, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 78px; -webkit-text-size-adjust: 100%; }
body { margin: 0; overflow-x: hidden; background: var(--paper); color: var(--ink); font: 16px/1.75 var(--sans); -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
img, video, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea { color: inherit; font: inherit; }
button { border: 0; }
p, h1, h2, h3, blockquote, figure, dl, dd { margin: 0; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }
::selection { background: var(--ink); color: var(--paper); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.shell { width: var(--shell); margin-inline: auto; }
.section { position: relative; padding-block: var(--space); }
.section-dark { background: var(--ink); color: var(--paper); }
.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 { position: fixed; z-index: 1000; top: 12px; left: 12px; padding: 10px 16px; transform: translateY(-150%); background: #fff; font-weight: 700; transition: transform 180ms; }
.skip-link:focus { transform: none; }
.eyebrow { color: var(--muted); font-size: 11px; font-weight: 650; letter-spacing: .2em; line-height: 1.4; text-transform: uppercase; }
.section-dark .eyebrow { color: #aaa39b; }
.section-heading h2, .china-heading h2, .contact-heading h2, .shaper-copy h2 { margin-top: 22px; font: 400 clamp(38px,7.5vw,86px)/1.13 var(--display); letter-spacing: -.055em; }
.lede { max-width: 680px; color: var(--muted); font-size: clamp(16px,1.6vw,19px); line-height: 1.9; }

.button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 24px; padding: 13px 24px; border: 1px solid transparent; cursor: pointer; font-size: 13px; font-weight: 650; letter-spacing: .08em; line-height: 1.3; text-align: center; transition: background-color 250ms, border-color 250ms, color 250ms, transform 250ms var(--ease); }
.button:hover { transform: translateY(-2px); }
.button-light { background: #fff; color: var(--ink); }
.button-light:hover { background: #d7c7b7; }
.button-dark { background: var(--ink); color: #fff; }
.button-dark:hover { background: var(--soft); }
.button-outline-light { border-color: rgba(255,255,255,.4); color: #fff; }
.button-outline-light:hover { border-color: #fff; background: #fff; color: var(--ink); }
.text-link { display: inline-flex; align-items: center; gap: 14px; padding-bottom: 4px; border-bottom: 1px solid; font-size: 13px; font-weight: 650; letter-spacing: .08em; }
.text-link span { transition: transform 220ms var(--ease); }
.text-link:hover span { transform: translate(3px,-3px); }
.text-link-light { color: #fff; }
.image-frame { position: relative; overflow: hidden; background: #ded8d0; }
.image-frame img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease); }
.image-frame:hover img { transform: scale(1.025); }
.image-frame figcaption { position: absolute; right: 16px; bottom: 14px; padding: 5px 9px; background: rgba(20,18,16,.75); color: #fff; font-size: 10px; letter-spacing: .12em; }

/* Header */
.site-header { position: fixed; z-index: 100; inset: 0 0 auto; height: 72px; border-bottom: 1px solid transparent; color: #fff; transition: height 250ms, background-color 250ms, border-color 250ms, color 250ms; }
.site-header.is-scrolled, .site-header.menu-active { border-color: var(--line); background: rgba(251,250,249,.96); color: var(--ink); backdrop-filter: blur(16px); }
.site-header.menu-active { backdrop-filter: none; }
.header-inner { display: flex; width: var(--shell); height: 100%; align-items: center; justify-content: space-between; margin-inline: auto; }
.brand { position: relative; z-index: 102; display: flex; width: 104px; height: 46px; align-items: center; }
.brand img { width: 104px; filter: invert(1); transition: filter 250ms; }
.site-header.is-scrolled .brand img, .site-header.menu-active .brand img { filter: none; }
.menu-toggle { position: relative; z-index: 102; display: grid; width: 48px; height: 48px; place-content: center; gap: 7px; background: transparent; color: inherit; cursor: pointer; }
.menu-toggle span:not(.sr-only) { display: block; width: 25px; height: 1px; background: currentColor; transition: transform 250ms var(--ease); }
.menu-toggle[aria-expanded=true] span:nth-of-type(2) { transform: translateY(4px) rotate(45deg); }
.menu-toggle[aria-expanded=true] span:nth-of-type(3) { transform: translateY(-4px) rotate(-45deg); }
.main-navigation { position: fixed; z-index: 101; inset: 0; display: flex; visibility: hidden; flex-direction: column; align-items: flex-start; justify-content: center; gap: 24px; padding: 90px 32px 50px; opacity: 0; background: var(--paper); color: var(--ink); transition: opacity 250ms, visibility 250ms; }
.main-navigation.is-open { visibility: visible; opacity: 1; }
.main-navigation a { font: 400 30px/1.3 var(--display); letter-spacing: -.03em; }
.main-navigation .nav-cta { margin-top: 18px; padding: 10px 18px; background: var(--ink); color: #fff; font: 650 13px/1.3 var(--sans); letter-spacing: .08em; }

/* Hero */
.hero { position: relative; min-height: 100svh; overflow: hidden; background: #393633; color: #fff; }
.hero-media, .hero-media img, .hero-media video, .hero-shade { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-media img, .hero-media video { object-fit: cover; object-position: 55% center; }
.hero-media video { opacity: 0; transition: opacity 900ms; }
.hero-media video.is-playing { opacity: 1; }
.hero-shade { background: linear-gradient(180deg,rgba(10,10,9,.2),rgba(10,10,9,.16) 36%,rgba(10,10,9,.75)), linear-gradient(90deg,rgba(10,10,9,.62),rgba(10,10,9,.1) 75%); }
.hero-content { position: relative; z-index: 2; display: flex; min-height: 100svh; flex-direction: column; align-items: flex-start; justify-content: flex-end; padding-block: 128px 104px; }
.hero-eyebrow { color: rgba(255,255,255,.7); }
.hero h1 { max-width: 850px; margin-top: 22px; font: 400 clamp(49px,11vw,112px)/1.04 var(--display); letter-spacing: -.065em; text-shadow: 0 4px 40px rgba(0,0,0,.2); }
.hero-intro { max-width: 610px; margin-top: 28px; color: rgba(255,255,255,.82); font-size: 15px; line-height: 1.9; }
.hero-signature { margin-top: 18px; color: rgba(255,255,255,.72); font-size: 12px; font-weight: 650; letter-spacing: .16em; }
.hero-signature span { padding-inline: 8px; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 34px; }
.hero-wechat { position: absolute; z-index: 3; right: 20px; bottom: 24px; display: none; align-items: center; gap: 12px; padding: 8px 12px 8px 8px; background: rgba(255,255,255,.92); color: var(--ink); }
.hero-wechat img { width: 54px; height: 54px; padding: 2px; background: #fff; object-fit: contain; object-position: center; }
.hero-wechat span { display: grid; gap: 2px; }
.hero-wechat strong { font-size: 12px; }
.hero-wechat small { color: var(--muted); font-size: 9px; }
.scroll-cue { position: absolute; z-index: 3; right: 22px; bottom: 112px; display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,.72); font-size: 9px; letter-spacing: .18em; writing-mode: vertical-rl; }
.scroll-cue i { display: block; width: 1px; height: 40px; overflow: hidden; background: rgba(255,255,255,.3); }
.scroll-cue i::after { display: block; width: 1px; height: 18px; animation: scroll-line 2s ease-in-out infinite; background: #fff; content: ""; }
@keyframes scroll-line { 0% { transform: translateY(-20px); } 50%,100% { transform: translateY(42px); } }

/* Heritage */
.heritage { background: radial-gradient(circle at 90% 8%,rgba(218,208,197,.35),transparent 28%),var(--paper); }
.heritage .section-heading { display: grid; gap: 26px; }
.heritage-grid { display: grid; gap: 42px; margin-top: clamp(50px,8vw,108px); }
.heritage-image { aspect-ratio: 4/3; }
.heritage-copy { align-self: end; }
.dropcap { color: var(--soft); font: 400 clamp(20px,3vw,30px)/1.75 var(--display); }
.dropcap::first-letter { float: left; margin: 11px 10px 0 0; color: var(--accent); font-size: 3.7em; line-height: .7; }
.metrics { display: grid; grid-template-columns: repeat(3,1fr); margin-top: 46px; border-block: 1px solid var(--line); }
.metrics>div { padding: 24px 10px 24px 0; }
.metrics>div+div { border-left: 1px solid var(--line); padding-left: 14px; }
.metrics dt { font: 400 clamp(35px,7vw,56px)/1 var(--display); letter-spacing: -.06em; }
.metrics dd { margin-top: 10px; color: var(--soft); font-size: 11px; font-weight: 650; line-height: 1.55; }
.metrics dd span { color: var(--muted); font-weight: 400; }
.credentials { display: grid; margin-top: clamp(70px,10vw,130px); border-top: 1px solid var(--line); }
.credentials article { display: grid; grid-template-columns: 78px 1fr; align-items: center; gap: 22px; padding-block: 28px; border-bottom: 1px solid var(--line); }
.credentials img { width: 72px; mix-blend-mode: multiply; }
.credentials h3 { font: 500 19px/1.4 var(--display); }
.credentials p { margin-top: 6px; color: var(--muted); font-size: 12px; line-height: 1.7; }
.tricolor { display: flex; width: 58px; height: 58px; overflow: hidden; border-radius: 50%; }
.tricolor i { flex: 1; }
.tricolor i:nth-child(1) { background: #1d3d73; } .tricolor i:nth-child(2) { background: #fff; } .tricolor i:nth-child(3) { background: #c43b3d; }
.luxury-proof { display: grid; gap: 18px; margin-top: 64px; padding: 30px 0 4px; border-top: 1px solid var(--ink); }
.luxury-proof>p:last-child { max-width: 930px; font: 400 clamp(22px,4vw,39px)/1.55 var(--display); letter-spacing: -.025em; }
.luxury-proof strong { font: 650 .82em/1.5 var(--sans); letter-spacing: .06em; }

/* Master shaper */
.master-shaper { overflow: hidden; }
.master-shaper::after { position: absolute; inset: auto -15% -35% auto; width: 70vw; height: 70vw; border: 1px solid rgba(255,255,255,.05); border-radius: 50%; content: ""; }
.shaper-grid { position: relative; z-index: 1; display: grid; gap: 64px; }
.shaper-portrait { position: relative; align-self: start; padding-top: 38px; }
.portrait-backdrop { position: absolute; top: -18%; left: -8%; color: rgba(255,255,255,.035); font: 400 min(102vw,600px)/1 var(--display); }
.shaper-portrait img { position: relative; width: 100%; max-width: 620px; margin-inline: auto; filter: saturate(.82) contrast(1.02); }
.portrait-caption { position: relative; z-index: 1; margin-top: 18px; font-size: 13px; font-weight: 650; letter-spacing: .06em; }
.portrait-caption span { color: #99918a; font-size: 10px; font-weight: 400; letter-spacing: .12em; }
.shaper-copy h2 { font-size: clamp(42px,8vw,90px); }
.lead-serif { margin-top: 36px; color: #e7e2dc; font: 400 clamp(21px,3vw,30px)/1.75 var(--display); }
.shaper-copy>p:not(.eyebrow):not(.lead-serif) { margin-top: 24px; color: #b9b3ad; }
.shaper-copy blockquote { margin-top: 46px; padding: 28px 0 0 26px; border-top: 1px solid #4a4641; border-left: 1px solid #4a4641; }
.shaper-copy blockquote p { font: 400 clamp(20px,3vw,28px)/1.65 var(--display); }
.shaper-copy cite { display: block; margin-top: 14px; color: #918a83; font-size: 11px; font-style: normal; letter-spacing: .12em; }
.china-presence { display: flex; align-items: flex-start; gap: 16px; margin-block: 38px 28px; padding: 18px; border: 1px solid #49443f; }
.china-presence p { color: #bbb5af; font-size: 13px; line-height: 1.65; }
.china-presence strong { color: #fff; }
.pulse { position: relative; flex: 0 0 8px; width: 8px; height: 8px; margin-top: 7px; border-radius: 50%; background: #c2a483; }
.pulse::after { position: absolute; inset: -5px; border: 1px solid #c2a483; border-radius: 50%; animation: pulse 2.2s ease-out infinite; content: ""; }
@keyframes pulse { from { transform: scale(.6); opacity: 1; } to { transform: scale(1.7); opacity: 0; } }

/* Collection */
.collection { background: var(--paper-deep); }
.collection-heading { display: grid; gap: 30px; }
.product-grid { display: grid; gap: 18px; margin-top: clamp(56px,8vw,110px); }
.product-card { display: flex; min-width: 0; flex-direction: column; background: var(--paper); }
.product-visual { position: relative; display: grid; min-height: 480px; overflow: hidden; place-items: center; padding: 42px 34px 16px; background: radial-gradient(circle at 50% 35%,#fff,#f2efea 58%,#ebe7e1); }
.product-visual::after { position: absolute; right: 14%; bottom: 5%; left: 14%; height: 12px; border-radius: 50%; background: rgba(34,30,26,.12); filter: blur(10px); content: ""; }
.product-visual img { position: relative; z-index: 1; width: auto; max-height: 420px; object-fit: contain; transition: transform 700ms var(--ease); }
.product-card:hover .product-visual img { transform: translateY(-7px) rotate(.35deg); }
.edition { position: absolute; z-index: 2; top: 18px; right: 18px; padding: 4px 8px; border: 1px solid #cec7bf; color: var(--muted); font-size: 9px; letter-spacing: .12em; }
.product-info { display: flex; flex: 1; flex-direction: column; padding: 26px 24px 30px; }
.product-index { color: #a59e96; font-size: 9px; letter-spacing: .18em; }
.product-info h3 { margin-top: 12px; font: 500 25px/1.35 var(--display); }
.product-info h3 span { display: block; margin-top: 4px; color: var(--muted); font: 500 10px/1.4 var(--sans); letter-spacing: .1em; text-transform: uppercase; }
.product-info>p:not(.product-index):not(.price) { margin-top: 20px; color: var(--muted); font-size: 13px; }
.price { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-top: auto; padding-top: 28px; }
.price strong { font: 500 21px/1.4 var(--display); }
.price span { color: var(--muted); font-size: 10px; }
.price-note { display: flex; flex-direction: column; align-items: flex-start; gap: 20px; margin-top: 36px; padding-top: 24px; border-top: 1px solid #d9d4ce; color: var(--muted); font-size: 11px; }

/* Craft */
.craft-intro { display: grid; gap: 54px; }
.craft-intro .section-heading { align-self: end; }
.craft-intro .lede { margin-top: 30px; }
.craft-main-image { aspect-ratio: 4/5; }
.technology-grid { display: grid; margin-top: clamp(70px,10vw,130px); border-top: 1px solid var(--ink); }
.technology-grid article { min-height: 230px; padding: 26px 0 34px; border-bottom: 1px solid var(--line); }
.technology-grid span { color: var(--accent); font-size: 10px; letter-spacing: .16em; }
.technology-grid h3 { margin-top: 36px; font: 500 23px/1.4 var(--display); }
.technology-grid p { margin-top: 14px; color: var(--muted); font-size: 13px; }
.process-wrap { display: grid; gap: 52px; margin-top: clamp(80px,12vw,160px); }
.process-image { min-height: 380px; }
.process ol { margin: 30px 0 0; padding: 0; list-style: none; }
.process li { display: grid; grid-template-columns: 40px 1fr; gap: 18px; padding-block: 24px; border-top: 1px solid var(--line); }
.process li:last-child { border-bottom: 1px solid var(--line); }
.process li>span { color: var(--accent); font-size: 10px; }
.process h3 { font: 500 20px/1.4 var(--display); }
.process li p { margin-top: 7px; color: var(--muted); font-size: 12px; }

/* China and form */
.china { overflow: hidden; background: #e9e4de; }
.china::before { position: absolute; top: 4%; right: -15%; width: 60vw; height: 60vw; border: 1px solid rgba(28,26,23,.08); border-radius: 50%; content: ""; }
.china-heading { position: relative; display: grid; gap: 30px; }
.event-grid { position: relative; display: grid; gap: 18px; margin-top: clamp(54px,8vw,100px); }
.event-card { min-height: 410px; padding: clamp(30px,5vw,54px); background: var(--paper); }
.event-card-dark { background: var(--ink); color: var(--paper); }
.event-city { font-size: 10px; font-weight: 650; letter-spacing: .16em; }
.event-date { display: flex; align-items: baseline; gap: 10px; margin-top: 60px; color: var(--muted); font-size: 11px; letter-spacing: .1em; }
.event-date span { color: var(--ink); font: 400 clamp(48px,9vw,78px)/1 var(--display); letter-spacing: -.06em; }
.event-card-dark .event-date { color: #8d8780; }
.event-card-dark .event-date span { color: var(--paper); }
.event-card h3 { margin-top: 24px; font: 500 24px/1.4 var(--display); }
.event-card>p:nth-of-type(3) { margin-top: 14px; color: var(--muted); font-size: 13px; }
.event-card-dark>p:nth-of-type(3) { color: #aaa39c; }
.event-tag { display: inline-block; margin-top: 30px; padding: 5px 9px; border: 1px solid var(--line); font-size: 9px; letter-spacing: .12em; }
.event-card-dark .event-tag { border-color: #504b46; }
.meeting-panel { position: relative; display: grid; gap: 50px; margin-top: 18px; padding: clamp(34px,7vw,88px) clamp(24px,7vw,88px); background: var(--paper); }
.meeting-intro h3 { margin-top: 22px; font: 500 clamp(30px,5vw,52px)/1.28 var(--display); letter-spacing: -.035em; }
.meeting-intro>p:last-child { margin-top: 22px; color: var(--muted); font-size: 13px; }
.contact-form { min-width: 0; }
.form-row { display: grid; gap: 22px; }
.field { margin-bottom: 22px; }
.field label { display: block; margin-bottom: 7px; color: var(--muted); font-size: 10px; font-weight: 650; letter-spacing: .1em; }
.field input, .field textarea { width: 100%; border: 0; border-bottom: 1px solid #c9c3bc; border-radius: 0; padding: 10px 2px 12px; outline: 0; background: transparent; font-size: 15px; transition: border-color 180ms; }
.field textarea { min-height: 112px; resize: vertical; }
.field input:focus, .field textarea:focus { border-color: var(--ink); }
.field input[aria-invalid=true], .field textarea[aria-invalid=true] { border-color: #a1362e; }
.honeypot { position: absolute; left: -9999px; }
.form-footer { display: flex; flex-direction: column; align-items: flex-start; gap: 20px; }
.form-footer p { max-width: 420px; color: #948d85; font-size: 10px; line-height: 1.6; }
.form-footer p a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.form-footer .button { width: 100%; }
.form-footer .button i { font-style: normal; }
.form-footer .button:disabled { cursor: wait; opacity: .55; }
.form-status { min-height: 24px; margin-top: 18px; font-size: 12px; }
.form-status.is-success { color: #246342; } .form-status.is-error { color: #a1362e; }

/* Contact and footer */
.contact { border-bottom: 1px solid #393531; }
.contact-grid { display: grid; gap: 64px; }
.contact-heading h2 span { color: #8f8880; font-size: .48em; letter-spacing: 0; }
.contact-heading>p:not(.eyebrow) { max-width: 520px; margin-top: 28px; color: #aaa39c; }
.contact-heading .button { margin-top: 34px; }
.contact-details { display: grid; font-style: normal; }
.contact-details>div { padding-block: 22px; border-top: 1px solid #45413c; }
.contact-details>div:last-child { border-bottom: 1px solid #45413c; }
.contact-details span { display: block; margin-bottom: 8px; color: #8f8881; font-size: 9px; letter-spacing: .14em; }
.contact-details a, .contact-details p { color: #e2ddd7; font: 400 18px/1.6 var(--display); }
.contact-details a:hover { color: #d7c7b7; }
.wechat-card { display: grid; gap: 30px; align-items: center; padding-top: 34px; border-top: 1px solid #45413c; }
.qr-frame { display: block; width: min(240px,68vw); padding: 10px; background: #fff; }
.qr-frame img { width: 100%; height: auto; }
.wechat-card h3 { margin-top: 12px; font: 500 25px/1.4 var(--display); }
.wechat-card>div:last-child>p:last-child { margin-top: 14px; color: #98918a; font-size: 12px; }
.site-footer { padding-block: 34px; background: var(--ink); color: #8f8880; }
.site-footer .shell { display: grid; gap: 12px; }
.site-footer img { width: 86px; margin-bottom: 8px; filter: invert(1); opacity: .74; }
.site-footer p { font-size: 10px; letter-spacing: .08em; }

.reveal { transition: opacity 800ms var(--ease), transform 800ms var(--ease); }
.reveal.is-pending { transform: translateY(28px); opacity: 0; }
.reveal.is-visible { transform: none; opacity: 1; }

@media (min-width: 720px) {
  :root { --shell: min(100% - 72px,1340px); }
  .hero-content { padding-bottom: 90px; }
  .hero-intro { font-size: 17px; }
  .hero-wechat { display: flex; right: 36px; bottom: 36px; }
  .scroll-cue { right: 40px; bottom: 138px; }
  .heritage .section-heading, .collection-heading, .china-heading { grid-template-columns: minmax(0,1.15fr) minmax(280px,.85fr); align-items: end; }
  .heritage .section-heading .eyebrow, .heritage .section-heading h2 { grid-column: 1; }
  .heritage .section-heading .lede { grid-column: 2; grid-row: 1/span 2; }
  .heritage-grid { grid-template-columns: minmax(0,1.15fr) minmax(300px,.85fr); align-items: end; }
  .heritage-image { aspect-ratio: 1/1.08; }
  .credentials { grid-template-columns: repeat(3,1fr); border-bottom: 1px solid var(--line); }
  .credentials article { grid-template-columns: 72px 1fr; align-content: start; padding: 28px 24px; border-bottom: 0; }
  .credentials article:first-child { padding-left: 0; }
  .credentials article+article { border-left: 1px solid var(--line); }
  .product-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .product-featured { grid-column: span 2; display: grid; grid-template-columns: minmax(0,1.25fr) minmax(280px,.75fr); }
  .product-featured .product-visual { min-height: 660px; }
  .product-featured .product-visual img { max-height: 590px; }
  .product-featured .product-info { padding: 46px 38px; }
  .price-note { flex-direction: row; align-items: center; justify-content: space-between; }
  .craft-intro { grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr); align-items: end; }
  .technology-grid { grid-template-columns: repeat(2,1fr); }
  .technology-grid article { padding-inline: 28px; }
  .technology-grid article:nth-child(odd) { padding-left: 0; border-right: 1px solid var(--line); }
  .event-grid { grid-template-columns: repeat(2,1fr); }
  .meeting-panel { grid-template-columns: minmax(0,.8fr) minmax(360px,1.2fr); }
  .form-row { grid-template-columns: repeat(2,1fr); }
  .form-footer { flex-direction: row; align-items: center; justify-content: space-between; }
  .form-footer .button { width: auto; }
  .contact-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .wechat-card { grid-column: span 2; grid-template-columns: 240px 1fr; }
  .site-footer .shell { grid-template-columns: 1fr auto auto; align-items: center; gap: 30px; }
  .site-footer img { margin: 0; }
}

@media (min-width: 1040px) {
  .site-header { height: 86px; }
  .brand, .brand img { width: 124px; }
  .menu-toggle { display: none; }
  .main-navigation { position: static; visibility: visible; flex-direction: row; align-items: center; gap: clamp(22px,2.5vw,42px); padding: 0; opacity: 1; background: transparent; color: inherit; transition: none; }
  .main-navigation a { position: relative; font: 600 11px/1.4 var(--sans); letter-spacing: .08em; }
  .main-navigation a:not(.nav-cta)::after { position: absolute; right: 0; bottom: -7px; left: 0; height: 1px; transform: scaleX(0); transform-origin: right; background: currentColor; content: ""; transition: transform 250ms var(--ease); }
  .main-navigation a:hover::after, .main-navigation a[aria-current=true]::after { transform: scaleX(1); transform-origin: left; }
  .main-navigation .nav-cta { margin: 0 0 0 8px; border: 1px solid rgba(255,255,255,.45); padding: 10px 17px; background: transparent; color: inherit; }
  .site-header.is-scrolled .main-navigation .nav-cta { border-color: var(--ink); background: var(--ink); color: #fff; }
  .hero-media img, .hero-media video { object-position: center; }
  .hero-content { justify-content: center; padding-block: 150px 95px; }
  .hero-wechat { right: max(50px,calc((100vw - 1340px)/2)); bottom: 42px; }
  .scroll-cue { right: max(54px,calc((100vw - 1340px)/2 + 20px)); bottom: 144px; }
  .shaper-grid { grid-template-columns: minmax(430px,.9fr) minmax(440px,1.1fr); align-items: center; gap: clamp(70px,9vw,150px); }
  .shaper-portrait { padding-top: 0; }
  .portrait-backdrop { top: -25%; left: -28%; font-size: min(52vw,720px); }
  .product-grid { grid-template-columns: repeat(4,minmax(0,1fr)); }
  .product-featured { grid-column: span 2; grid-row: span 2; display: flex; }
  .product-featured .product-visual { min-height: 780px; }
  .product-featured .product-visual img { max-height: 700px; }
  .product-featured .product-info { padding: 36px 34px 40px; }
  .product-card:not(.product-featured) .product-visual { min-height: 430px; }
  .product-card:not(.product-featured) .product-visual img { max-height: 365px; }
  .technology-grid { grid-template-columns: repeat(4,1fr); }
  .technology-grid article { min-height: 300px; padding: 30px; border-right: 1px solid var(--line); }
  .technology-grid article:first-child { padding-left: 0; }
  .technology-grid article:last-child { border-right: 0; }
  .technology-grid h3 { margin-top: 80px; }
  .process-wrap { grid-template-columns: minmax(0,1.2fr) minmax(380px,.8fr); align-items: center; }
  .process-image { min-height: 670px; }
  .event-card { min-height: 500px; }
  .contact-grid { grid-template-columns: minmax(0,.9fr) minmax(300px,.62fr) minmax(360px,.78fr); align-items: start; }
  .wechat-card { grid-column: auto; grid-template-columns: 1fr; padding-top: 0; border-top: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .hero-media video { display: none; }
  .reveal, .reveal.is-pending { transform: none; opacity: 1; }
}

@media (max-width: 380px) {
  :root { --shell: min(100% - 28px,1340px); }
  .hero h1 { font-size: 44px; }
  .hero-actions { gap: 18px; }
  .metrics { grid-template-columns: 1fr; }
  .metrics>div+div { border-top: 1px solid var(--line); border-left: 0; padding-left: 0; }
}