:root {
  color-scheme: light;
  --font-system: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", Arial, sans-serif;
  --ink: #1d1d1f;
  --muted: #6e6e73;
  --paper: #fff;
  --paper-2: #f5f5f7;
  --line: #d2d2d7;
  --sage: #718b7b;
  --link: #607d6d;
  --header: 64px;
  --max: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--font-system); font-size: 17px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
body.nav-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; }
h1, h2, h3, h4, p { margin-top: 0; }
h1, h2, h3, h4 { font-weight: 600; }
h1, h2 { letter-spacing: -.04em; }
em { font-style: normal; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--sage); outline-offset: 5px; border-radius: 4px; }
.skip-link { position: fixed; z-index: 100; left: 16px; top: -100px; padding: 10px 18px; border-radius: 24px; background: var(--sage); color: #fff; }
.skip-link:focus { top: 12px; }
.topline { display: none; }
.site-header { position: fixed; z-index: 30; inset: 0 0 auto; height: var(--header); display: flex; align-items: center; gap: 30px; padding: 0 max(24px, calc((100vw - 1200px) / 2)); color: var(--ink); background: rgba(250, 250, 252, .88); border-bottom: 1px solid rgba(0,0,0,.08); backdrop-filter: saturate(180%) blur(20px); -webkit-backdrop-filter: saturate(180%) blur(20px); }
.wordmark { display: flex; flex: 0 0 auto; align-items: center; gap: 10px; font-size: 17px; font-weight: 600; letter-spacing: -.02em; }
.wordmark img { width: 27px; height: 27px; object-fit: contain; }
.site-nav { display: flex; align-items: center; gap: 30px; margin-left: auto; font-size: 12px; }
.site-nav a { color: #424245; }
.site-nav a:hover { color: #000; }
.header-action { color: var(--link); font-size: 12px; white-space: nowrap; }
.header-action:hover { text-decoration: underline; }
.header-action span { display: none; }
.language-switch { order: 3; flex: 0 0 auto; font-size: 12px; padding: 6px 12px; border-radius: 18px; border: 1px solid #d2d2d7; }
.language-switch:hover { background: #e8e8ed; }
.nav-toggle { display: none; }
.eyebrow { margin: 0 0 14px; color: var(--muted); font-size: 15px; font-weight: 500; letter-spacing: 0; text-transform: none; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 44px; padding: 11px 23px; border: 1px solid transparent; border-radius: 980px; font-size: 15px; line-height: 1.4; letter-spacing: 0; transition: background .18s, box-shadow .18s; }
.button-dark, .button-light { background: var(--sage); color: #fff; }
.button:hover { background: #829b8b; }
.button span { display: none; }
.text-link { display: inline-flex; align-items: center; gap: 7px; color: var(--link); font-size: 17px; line-height: 1.4; }
.text-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.text-link span { font-size: 13px; }
.hero-actions, .product-hero-actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 24px; }
.studio-hero { padding: 135px 24px 65px; overflow: hidden; text-align: center; background: var(--paper-2); }
.hero-copy { position: relative; z-index: 1; max-width: 1000px; margin: 0 auto; }
.hero-copy h1 { max-width: 900px; margin: 0 auto 22px; font-size: clamp(46px, 6vw, 76px); line-height: 1.08; font-weight: 600; letter-spacing: -.045em; text-wrap: balance; }
.hero-copy h1 em { color: var(--ink); }
.hero-lede { max-width: 690px; margin: 0 auto 27px; color: var(--muted); font-size: 21px; line-height: 1.55; text-wrap: pretty; }
.hero-showcase { display: flex; align-items: end; justify-content: center; gap: 70px; max-width: 1020px; margin: 58px auto 0; }
.showcase-item { flex: 0 1 230px; min-width: 0; transition: transform .25s ease; }
.showcase-item:hover { transform: translateY(-5px); }
.hero-showcase .product-visual { min-height: 0; height: 365px; padding: 0; background: none; }
.hero-showcase .showcase-icon-visual { display: grid; place-items: center; height: 280px; }
.showcase-app-icon { width: 118px; height: 118px; object-fit: cover; border-radius: 22%; box-shadow: 0 18px 32px rgba(29,45,36,.18); }
.hero-showcase .device { width: 180px; border-width: 5px; border-radius: 29px; }
.hero-showcase .device-screen { padding: 40px 14px 16px; }
.hero-showcase .device::before { height: 13px; top: 7px; }
.hero-showcase .media-poster { margin-top: 24px; }
.hero-showcase .note-device-head { margin-top: 24px; }
.hero-showcase .note-device h3 { font-size: 17px; margin-top: 22px; }
.hero-showcase .note-device p { font-size: 10px; }
.hero-showcase .camera-moment { font-size: 9px; }
.showcase-name { display: inline-flex; align-items: center; gap: 9px; margin-top: 12px; font-size: 19px; font-weight: 600; letter-spacing: -.02em; }
.showcase-name span { color: var(--link); font-weight: 400; }
.scroll-cue { display: none; }
.section-label { display: flex; justify-content: space-between; font-size: 15px; font-weight: 600; color: var(--muted); }
.section-label > span:first-child { display: none; }
.manifesto, .principles { max-width: var(--max); padding: 105px 24px; margin: 0 auto; }
.manifesto-grid, .principles-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; margin-top: 35px; }
.manifesto h2, .principles h2 { margin: 0; font-size: clamp(32px, 3.5vw, 48px); line-height: 1.2; text-wrap: balance; }
.manifesto-copy { color: var(--muted); font-size: 19px; line-height: 1.75; }
.manifesto-copy p { margin-bottom: 23px; }
.manifesto-copy .text-link { margin-top: 6px; }
.products-section { background: var(--paper-2); padding: 95px max(24px, calc((100vw - 1200px)/2)) 105px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 45px; margin: 35px 0 45px; }
.section-heading h2 { margin: 0; font-size: clamp(40px, 4.5vw, 60px); line-height: 1.1; }
.section-heading > p { max-width: 340px; margin: 0; color: var(--muted); font-size: 18px; }
.product-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.product-card { display: flex; flex-direction: column; min-height: 550px; padding: 28px 24px; border-radius: 28px; background: #fff; overflow: hidden; transition: transform .25s ease, box-shadow .25s ease; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 12px 28px rgba(0,0,0,.07); }
.product-card-top { display: flex; align-items: center; justify-content: space-between; color: var(--muted); font-size: 12px; }
.product-arrow { font-size: 18px; color: var(--link); }
.product-art { position: relative; display: flex; align-items: center; justify-content: center; min-height: 285px; margin: 25px 0; border-radius: 18px; overflow: hidden; }
.app-icon-art { padding: 30px; }
.product-art.app-icon-art { margin-bottom: 15px; }
.product-app-icon { width: min(115px, 70%); aspect-ratio: 1; object-fit: cover; border-radius: 22%; box-shadow: 0 14px 28px rgba(29,45,36,.18); }
.showcase-imark .showcase-app-icon, .product-imark .product-app-icon, .showcase-camerax .showcase-app-icon, .product-camerax .product-app-icon { border-radius: 0; box-shadow: none; filter: drop-shadow(0 12px 16px rgba(29,45,36,.16)); }
.art-iplay { background: #edf1ee; }
.art-imark { background: #eef1ed; }
.art-camerax { background: #e9f0eb; }
.play-window { width: 88%; height: 230px; padding: 10px 10px 14px; background: #17171a; color: #f5f5f7; border-radius: 12px; box-shadow: 0 10px 22px rgba(0,0,0,.12); }
.window-bar { display: flex; align-items: center; gap: 5px; height: 20px; color: #b1b1b8; font-size: 8px; }
.window-bar i { width: 6px; height: 6px; border-radius: 50%; background: #8e8e93; }
.window-bar i:nth-child(1) { background: #ff6058; }
.window-bar i:nth-child(2) { background: #ffbd2d; }
.window-bar i:nth-child(3) { background: #28c840; }
.window-bar span { margin-left: auto; }
.play-image { position: relative; height: calc(100% - 35px); display: flex; flex-direction: column; align-items: center; justify-content: center; border-radius: 6px; background: linear-gradient(135deg,#94aa9b,#506c5b); overflow: hidden; }
.play-image::before { content: ""; position: absolute; width: 160px; height: 160px; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; box-shadow: 0 0 0 20px rgba(255,255,255,.05),0 0 0 40px rgba(255,255,255,.04); }
.play-image b { position: relative; z-index: 1; font-size: 30px; font-weight: 600; letter-spacing: -.04em; }
.play-image span { position: relative; z-index: 1; margin-top: 8px; font-size: 8px; opacity: .85; }
.play-button { position: absolute; bottom: 12px; right: 12px; width: 28px; height: 28px; border: 1px solid rgba(255,255,255,.6); border-radius: 50%; display: grid; place-items: center; font-size: 10px; }
.play-progress { height: 3px; margin-top: 10px; border-radius: 2px; background: #48484a; }
.play-progress i { display: block; width: 38%; height: 100%; background: #718b7b; border-radius: 2px; }
.note-sheet { width: 84%; min-height: 225px; margin: 25px 0; padding: 24px; background: #fff; color: var(--ink); border-radius: 14px; box-shadow: 0 8px 22px rgba(70,95,79,.12); }
.note-meta { color: #86868b; font-size: 9px; }
.note-sheet h4 { margin: 25px 0 13px; font-size: 22px; line-height: 1.35; letter-spacing: -.025em; }
.note-sheet p { font-size: 12px; line-height: 1.6; color: var(--muted); }
.note-line { height: 1px; margin-top: 18px; background: #e5e5ea; }
.note-line.short { width: 62%; margin-top: 9px; }
.note-tag { display: inline-block; margin-top: 18px; padding: 4px 8px; border-radius: 8px; color: #587363; background: #e1eae3; font-size: 8px; }
.camera-view { position: absolute; inset: 15px; display: flex; flex-direction: column; justify-content: space-between; padding: 14px; border: 1px solid rgba(47,76,63,.12); border-radius: 14px; background: linear-gradient(150deg,#c3d2c7,#88a993); color: #183e2d; font-size: 9px; }
.camera-top, .camera-bottom { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.camera-bottom i { flex: 0 0 40px; width: 40px; height: 40px; border: 2px solid #fff; border-radius: 50%; box-shadow: 0 0 0 4px rgba(255,255,255,.25); }
.product-card-bottom { display: flex; flex-direction: column; align-items: start; gap: 19px; margin-top: auto; }
.product-card-bottom h3 { margin: 0 0 8px; font-size: 28px; letter-spacing: -.025em; }
.product-card-bottom p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.6; }
.pill { color: var(--link); font-size: 15px; }
.pill::after { content: " ›"; }
.principle-list article { display: grid; grid-template-columns: 35px 1fr; gap: 15px; padding-bottom: 24px; margin-bottom: 24px; border-bottom: 1px solid #e5e5ea; }
.principle-list article > span { color: var(--muted); font-size: 12px; padding-top: 5px; }
.principle-list h3 { margin: 0 0 8px; font-size: 22px; letter-spacing: -.02em; }
.principle-list p { margin: 0; color: var(--muted); font-size: 17px; }
.closing-note { padding: 100px 24px; background: var(--paper-2); text-align: center; }
.closing-mark { display: flex; justify-content: center; align-items: center; gap: 10px; margin-bottom: 25px; color: var(--muted); font-size: 12px; font-weight: 600; }
.closing-mark img { width: 30px; }
.closing-note h2 { max-width: 820px; margin: 0 auto 30px; font-size: clamp(36px, 4.5vw, 56px); line-height: 1.2; text-wrap: balance; }
.site-footer { display: grid; grid-template-columns: 1.2fr 1fr auto; gap: 45px; padding: 40px max(24px,calc((100vw - 1200px)/2)); background: #f5f5f7; color: var(--muted); border-top: 1px solid #d2d2d7; font-size: 12px; }
.footer-brand { display: flex; align-items: start; gap: 10px; }
.footer-brand img { width: 24px; height: 24px; object-fit: contain; }
.footer-brand strong { display: block; color: var(--ink); font-size: 13px; }
.footer-brand span { display: block; margin-top: 5px; }
.site-footer nav { display: flex; flex-wrap: wrap; align-content: start; gap: 12px 24px; color: #424245; }
.site-footer nav a:hover { text-decoration: underline; }
.footer-meta { display: flex; flex-direction: column; gap: 5px; text-align: right; }
/* Product pages */
.product-hero { position: relative; padding: 150px 24px 80px; background: var(--paper-2); text-align: center; }
.product-breadcrumb { position: absolute; top: 88px; left: max(24px,calc((100vw - 1200px)/2)); color: var(--muted); font-size: 12px; }
.product-breadcrumb:hover { text-decoration: underline; }
.product-hero-copy { max-width: 920px; margin: 0 auto; }
.product-hero h1 { margin: 0 0 18px; font-size: 34px; line-height: 1.2; font-weight: 600; letter-spacing: -.03em; }
.product-tagline { margin: 0 auto 25px; max-width: 920px; font-size: clamp(36px,4.3vw,56px); font-weight: 600; line-height: 1.2; letter-spacing: -.03em; text-wrap: balance; }
.product-hero-lede { margin: 0 auto 26px; max-width: 700px; font-size: 21px; line-height: 1.6; color: var(--muted); }
.product-visual { position: relative; display: grid; place-items: center; min-height: 520px; margin-top: 45px; }
.iplay-hero-visual { max-width: 1120px; min-height: 0; margin: 48px auto 0; padding: 0 18px; }
.iplay-hero-screenshot { width: 100%; aspect-ratio: 1.45; object-fit: cover; object-position: center; border-radius: 18px; background: #e8ece9; box-shadow: 0 28px 70px rgba(29,45,36,.16); }
.imark-hero-visual { max-width: 1120px; min-height: 0; margin: 48px auto 0; padding: 0 18px; }
.imark-hero-screenshot { width: 100%; aspect-ratio: 1.45; object-fit: cover; object-position: center; border-radius: 18px; background: #fff; box-shadow: 0 28px 70px rgba(29,45,36,.12); }
.device { position: relative; z-index: 1; width: 250px; aspect-ratio: .52; border: 6px solid #b7bac2; border-radius: 38px; background: #171719; box-shadow: 0 20px 35px rgba(0,0,0,.1),0 0 0 1px #86868b; overflow: hidden; }
.device::before { content: ""; position: absolute; z-index: 4; top: 9px; left: 50%; width: 30%; height: 18px; border-radius: 20px; transform: translateX(-50%); background: #171719; }
.device-screen { position: absolute; inset: 0; padding: 48px 18px 18px; text-align: left; }
.device-iplay { background: #334f43; color: #f5f5f7; }
.device-imark { background: #fff; color: var(--ink); }
.device-camerax { background: #b8c9bd; color: #365443; }
.mini-status { display: flex; align-items: center; justify-content: space-between; font-size: 8px; line-height: 1; opacity: .8; }
.media-poster { position: relative; height: 54%; margin-top: 32px; display: flex; flex-direction: column; justify-content: end; padding: 18px; border-radius: 10px; background: linear-gradient(145deg,#94aa9b,#506c5b); overflow: hidden; }
.media-poster::after { content: ""; position: absolute; inset: 16%; border: 1px solid rgba(255,255,255,.3); border-radius: 50%; }
.media-poster strong { position: relative; z-index: 1; font-size: 27px; font-weight: 600; }
.media-poster span { position: relative; z-index: 1; margin-top: 7px; font-size: 8px; line-height: 1.3; }
.media-controls { display: flex; justify-content: space-around; align-items: center; margin-top: 24px; font-size: 15px; }
.media-controls b { font-size: 24px; }
.media-bar { height: 3px; margin-top: 18px; background: rgba(255,255,255,.2); border-radius: 4px; }
.media-bar i { display: block; width: 35%; height: 100%; background: #718b7b; border-radius: 4px; }
.note-device-head { margin-top: 36px; font-size: 9px; color: #86868b; }
.note-device h3 { margin: 30px 0 15px; font-size: 24px; line-height: 1.4; }
.note-device p { color: var(--muted); font-size: 12px; line-height: 1.6; }
.device-rule { height: 1px; margin-top: 25px; background: #e5e5ea; }
.device-tag { display: inline-block; margin-top: 20px; padding: 4px 9px; border-radius: 8px; background: #e1eae3; color: #587363; font-size: 9px; }
.camera-device-screen { display: flex; flex-direction: column; justify-content: space-between; background: linear-gradient(150deg,#c3d2c7,#88a993); }
.camera-grid { position: absolute; inset: 20% 10%; background: linear-gradient(90deg,transparent 32.8%,rgba(255,255,255,.3) 33%,transparent 33.2%,transparent 66.1%,rgba(255,255,255,.3) 66.3%,transparent 66.5%),linear-gradient(0deg,transparent 32.8%,rgba(255,255,255,.3) 33%,transparent 33.2%,transparent 66.1%,rgba(255,255,255,.3) 66.3%,transparent 66.5%); }
.camera-readout { display: flex; justify-content: space-between; gap: 6px; font-size: 8px; }
.camera-shutter { align-self: center; width: 55px; height: 55px; margin-bottom: 12px; border: 2px solid #fff; border-radius: 50%; box-shadow: 0 0 0 5px rgba(255,255,255,.3); }
.portrait-frame { position: absolute; top: 25%; left: 20%; width: 60%; height: 46%; border: 1px solid rgba(255,255,255,.7); border-radius: 45% 45% 12px 12px; overflow: hidden; background: rgba(255,255,255,.1); }
.portrait-head { position: absolute; top: 16%; left: 33%; width: 34%; height: 32%; background: #eed8bd; border-radius: 45% 45% 42% 42%; transform: rotate(-8deg); }
.portrait-body { position: absolute; top: 52%; left: 9%; width: 82%; height: 75%; border-radius: 50% 50% 0 0; background: #597d67; transform: rotate(-8deg); }
.camera-moment { position: absolute; bottom: 22%; left: 8%; width: 84%; margin: 0; text-align: center; font-size: 11px; color: #183e2d; }
.portrait-frame-card { top: 17%; height: 57%; left: 24%; width: 52%; }
.product-overview { max-width: var(--max); margin: 0 auto; padding: 100px 24px; }
.product-overview-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 80px; margin-top: 35px; }
.product-overview h2 { margin: 0; font-size: clamp(32px,3.4vw,44px); line-height: 1.25; text-wrap: balance; }
.product-overview-copy { color: var(--muted); font-size: 18px; line-height: 1.8; }
.product-overview-copy p { margin-bottom: 23px; }
.iplay-screenshot-section { padding: 82px max(24px,calc((100vw - 1200px)/2)) 96px; background: #f1f4f1; }
.iplay-screenshot-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; margin-top: 34px; }
.iplay-screenshot-card { min-width: 0; margin: 0; overflow: hidden; border-radius: 12px; background: #fff; box-shadow: 0 8px 24px rgba(29,45,36,.08); }
.iplay-screenshot-card img { width: 100%; aspect-ratio: 1.45; object-fit: cover; object-position: center; background: #e8ece9; }
.iplay-screenshot-card figcaption { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 16px 18px 18px; }
.iplay-screenshot-card figcaption strong { font-size: 16px; font-weight: 600; }
.iplay-screenshot-card figcaption span { color: var(--muted); font-size: 13px; }
.imark-screenshot-section { padding: 82px max(24px,calc((100vw - 1200px)/2)) 96px; background: #f1f4f1; }
.imark-screenshot-card { margin: 34px 0 0; overflow: hidden; border-radius: 14px; background: #fff; box-shadow: 0 10px 28px rgba(29,45,36,.08); }
.imark-screenshot-card img { display: block; width: 100%; aspect-ratio: 1.45; object-fit: cover; object-position: center; }
.imark-screenshot-card figcaption { display: flex; align-items: baseline; justify-content: space-between; gap: 18px; padding: 18px 22px 20px; }
.imark-screenshot-card figcaption strong { font-size: 18px; }
.imark-screenshot-card figcaption span { color: var(--muted); font-size: 14px; }
.feature-section { background: var(--paper-2); padding: 85px max(24px,calc((100vw - 1200px)/2)) 100px; }
.feature-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 22px; margin-top: 35px; }
.feature { min-height: 240px; padding: 30px; background: #fff; border-radius: 24px; }
.feature-number { display: block; margin-bottom: 28px; color: var(--link); font-size: 14px; }
.feature h3 { margin-bottom: 10px; font-size: 23px; line-height: 1.35; letter-spacing: -.02em; }
.feature p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.7; }
.product-quote { padding: 95px 24px; text-align: center; }
.product-quote blockquote { max-width: 900px; margin: 0 auto; font-size: clamp(32px,4vw,52px); line-height: 1.3; letter-spacing: -.035em; font-weight: 600; text-wrap: balance; }
.product-quote cite { display: block; margin-top: 22px; color: var(--muted); font-size: 14px; font-style: normal; }
.product-footer-cta { padding: 85px 24px; background: var(--paper-2); text-align: center; }
.product-footer-cta h2 { margin: 0 0 20px; font-size: clamp(32px,4vw,48px); line-height: 1.2; }
.product-footer-cta p { max-width: 600px; margin: 0 auto 27px; color: var(--muted); font-size: 19px; }
/* Support and privacy use the same light typography and navigation. */
.legal-shell { max-width: var(--max); margin: 0 auto; padding: 140px 24px 100px; }
.legal-heading { max-width: 900px; padding-bottom: 45px; border-bottom: 1px solid var(--line); }
.legal-heading h1 { margin: 0 0 25px; font-size: clamp(42px,5vw,64px); line-height: 1.12; }
.legal-heading h1 br { display: none; }
.legal-heading h1 em::before { content: " "; }
.legal-heading p { max-width: 720px; color: var(--muted); font-size: 21px; line-height: 1.6; }
.legal-meta { margin-top: 25px; color: var(--muted); font-size: 12px; line-height: 1.8; }
.legal-content { display: grid; grid-template-columns: 210px minmax(0,1fr); gap: 65px; margin-top: 55px; }
.legal-toc { align-self: start; position: sticky; top: 95px; color: var(--muted); font-size: 13px; line-height: 1.5; }
.legal-toc a { display: block; margin-bottom: 15px; }
.legal-toc a:hover { color: var(--link); }
.legal-article h2 { margin: 0 0 17px; font-size: 28px; line-height: 1.3; }
.legal-article h2:not(:first-child) { margin-top: 48px; }
.legal-article p, .legal-article li { color: #515154; font-size: 17px; line-height: 1.85; }
.legal-article a:not(.support-card) { color: var(--link); }
.legal-article a:not(.support-card):hover { text-decoration: underline; }
.legal-callout { padding: 25px 28px; margin: 30px 0; background: var(--paper-2); border-radius: 18px; }
.legal-callout p { margin: 0; }
.support-links { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px; margin-top: 32px; }
.support-card { display: block; padding: 28px; background: var(--paper-2); border-radius: 22px; transition: background .2s; }
.support-card:hover { background: #ededf0; }
.support-card span { display: block; margin-bottom: 25px; color: var(--muted); font-size: 12px; }
.support-card h3 { margin: 0 0 10px; font-size: 25px; }
.support-card p { margin: 0; font-size: 15px; line-height: 1.7; }
html[lang="zh-CN"] h1, html[lang="zh-CN"] h2 { letter-spacing: -.025em; }
html[lang="zh-CN"] .hero-copy h1 { font-size: clamp(42px,5vw,64px); line-height: 1.3; }
html[lang="zh-CN"] .product-tagline { line-height: 1.35; }
html[lang="zh-CN"] .manifesto h2, html[lang="zh-CN"] .principles h2, html[lang="zh-CN"] .product-overview h2 { line-height: 1.4; }
@media (max-width: 1000px) {
  .site-header { gap: 22px; }
  .site-nav { gap: 22px; }
  .header-action { display: none; }
  .hero-showcase { gap: 45px; }
  .manifesto-grid, .principles-grid, .product-overview-grid { gap: 50px; }
  .product-list { gap: 16px; }
  .product-card { padding: 24px 18px; }
  .product-art { min-height: 260px; }
  .note-sheet { padding: 20px; }
  .feature { padding: 25px; }
  .site-footer { grid-template-columns: 1fr 1fr; }
  .footer-meta { grid-column: 1/-1; flex-direction: row; justify-content: space-between; text-align: left; }
}
@media (max-width: 800px) {
  .site-header { gap: 15px; height: 60px; }
  .wordmark { font-size: 16px; }
  .nav-toggle { display: flex; align-items: center; justify-content: center; gap: 7px; height: 44px; margin-left: auto; border: 0; background: none; color: var(--ink); font-size: 12px; }
  .nav-toggle b { font-weight: 400; }
  .nav-toggle span { width: 12px; height: 1px; background: var(--ink); }
  .nav-toggle span:nth-child(2), .nav-toggle span:nth-child(3) { display: none; }
  .site-nav { position: fixed; inset: 60px 0 auto; height: calc(100dvh - 60px); margin: 0; padding: 30px 32px; display: flex; flex-direction: column; align-items: start; gap: 0; background: #fafafc; visibility: hidden; opacity: 0; pointer-events: none; transform: translateY(-10px); transition: opacity .2s,transform .2s,visibility .2s; }
  .site-nav.is-open { visibility: visible; opacity: 1; pointer-events: auto; transform: translateY(0); }
  .site-nav a { width: 100%; padding: 16px 0; color: var(--ink); font-size: 26px; font-weight: 600; }
  .language-switch { font-size: 12px; padding: 5px 10px; }
  .studio-hero { padding-top: 110px; }
  .hero-showcase { gap: 30px; }
  .hero-showcase .device { width: 160px; }
  .hero-showcase .product-visual { height: 320px; }
  .hero-showcase .showcase-icon-visual { height: 235px; }
  .showcase-app-icon { width: 90px; height: 90px; }
  .hero-showcase .note-device h3 { font-size: 15px; }
  .hero-showcase .note-device p { font-size: 9px; }
  .manifesto-grid, .principles-grid, .product-overview-grid { grid-template-columns: 1fr; gap: 30px; }
  .manifesto, .principles, .product-overview { padding-top: 80px; padding-bottom: 80px; }
  .manifesto h2, .principles h2, .product-overview h2 { max-width: 650px; }
  .section-heading { align-items: start; flex-direction: column; gap: 25px; }
  .section-heading > p { max-width: 570px; }
  .product-list, .feature-grid { grid-template-columns: 1fr; gap: 20px; }
  .iplay-screenshot-grid { grid-template-columns: 1fr; gap: 18px; }
  .iplay-screenshot-card img { aspect-ratio: 1.45; }
  .product-card { min-height: 0; padding: 30px; }
  .product-art { min-height: 320px; }
  .play-window { max-width: 340px; }
  .note-sheet { max-width: 310px; }
  .camera-view { max-width: 340px; margin: 0 auto; }
  .product-card-bottom { flex-direction: row; justify-content: space-between; align-items: end; gap: 30px; }
  .pill { flex: 0 0 auto; }
  .feature { min-height: 0; padding: 30px; }
  .legal-content { grid-template-columns: 1fr; gap: 35px; }
  .legal-toc { position: static; display: flex; flex-wrap: wrap; gap: 12px 24px; }
  .legal-toc a { margin: 0; }
}
@media (max-width: 560px) {
  .site-header { padding: 0 18px; gap: 12px; }
  .wordmark { gap: 8px; font-size: 15px; }
  .wordmark img { width: 24px; height: 24px; }
  .studio-hero { padding: 110px 20px 45px; }
  .hero-copy h1 { font-size: 42px; line-height: 1.12; }
  html[lang="zh-CN"] .hero-copy h1 { font-size: 42px; line-height: 1.25; }
  .hero-lede { font-size: 18px; line-height: 1.65; }
  .eyebrow { font-size: 13px; }
  .hero-actions, .product-hero-actions { gap: 18px; }
  .text-link { font-size: 15px; }
  .button { min-height: 42px; padding: 10px 19px; font-size: 14px; }
  .hero-showcase { gap: 12px; margin-top: 45px; align-items: start; }
  .showcase-item { flex: 1 1 0; }
  .hero-showcase .product-visual { height: auto; margin-top: 0; }
  .hero-showcase .device { width: 100%; max-width: 110px; border-width: 3px; border-radius: 17px; }
  .hero-showcase .showcase-icon-visual { height: auto; min-height: 0; }
  .showcase-app-icon { width: min(62px, 82%); height: auto; border-radius: 22%; }
  .hero-showcase .device::before { width: 32%; top: 4px; height: 8px; }
  .hero-showcase .device-screen { padding: 24px 7px 8px; }
  .hero-showcase .mini-status { font-size: 5px; }
  .hero-showcase .media-poster { margin-top: 17px; padding: 8px; border-radius: 5px; }
  .hero-showcase .media-poster strong { font-size: 15px; }
  .hero-showcase .media-poster span { font-size: 5px; }
  .hero-showcase .media-controls { font-size: 9px; margin-top: 12px; }
  .hero-showcase .media-controls b { font-size: 13px; }
  .hero-showcase .media-bar { height: 2px; margin-top: 10px; }
  .hero-showcase .note-device-head { font-size: 5px; margin-top: 17px; }
  .hero-showcase .note-device h3 { margin: 15px 0 8px; font-size: 11px; }
  .hero-showcase .note-device p { font-size: 6px; }
  .hero-showcase .device-rule { margin-top: 12px; }
  .hero-showcase .device-tag { margin-top: 10px; font-size: 5px; padding: 2px 4px; }
  .hero-showcase .camera-readout { font-size: 5px; }
  .hero-showcase .camera-moment { font-size: 6px; bottom: 24%; }
  .hero-showcase .camera-shutter { width: 25px; height: 25px; margin-bottom: 4px; border-width: 1px; box-shadow: 0 0 0 3px rgba(255,255,255,.3); }
  .showcase-name { font-size: 12px; margin-top: 9px; gap: 4px; white-space: nowrap; }
  .manifesto, .principles, .product-overview { padding: 65px 22px; }
  .manifesto-grid, .principles-grid, .product-overview-grid { margin-top: 28px; }
  .manifesto h2, .principles h2, .product-overview h2 { font-size: 32px; }
  .manifesto-copy, .product-overview-copy { font-size: 17px; }
  .products-section, .feature-section { padding: 65px 18px; }
  .section-heading { margin: 28px 0 30px; }
  .section-heading h2 { font-size: 38px; }
  .section-heading > p { font-size: 17px; }
  .product-card { padding: 25px; border-radius: 24px; }
  .product-card-bottom { flex-direction: column; align-items: start; gap: 18px; }
  .product-card-bottom h3 { font-size: 26px; }
  .product-art { min-height: 285px; }
  .app-icon-art { min-height: 285px; }
  .product-hero { padding: 130px 22px 55px; }
  .product-breadcrumb { top: 83px; left: 22px; font-size: 11px; }
  .product-hero h1 { font-size: 27px; margin-bottom: 18px; }
  .product-tagline { font-size: 34px; margin-bottom: 22px; }
  .product-hero-lede { font-size: 18px; }
  .product-visual { min-height: 450px; margin-top: 38px; }
  .iplay-hero-visual { min-height: 0; margin-top: 32px; padding: 0; }
  .iplay-hero-screenshot { aspect-ratio: 1.15; border-radius: 10px; }
  .imark-hero-visual { min-height: 0; margin-top: 32px; padding: 0; }
  .imark-hero-screenshot { aspect-ratio: 1.15; border-radius: 10px; }
  .iplay-screenshot-section { padding: 60px 18px 68px; }
  .iplay-screenshot-grid { margin-top: 25px; }
  .iplay-screenshot-card figcaption { padding: 13px 14px 15px; }
  .imark-screenshot-section { padding: 60px 18px 68px; }
  .imark-screenshot-card { margin-top: 25px; }
  .imark-screenshot-card figcaption { display: block; padding: 14px 16px 16px; }
  .imark-screenshot-card figcaption span { display: block; margin-top: 5px; }
  .device { width: 225px; border-radius: 34px; }
  .device-screen { padding: 43px 15px 15px; }
  .product-quote { padding: 65px 22px; }
  .product-quote blockquote { font-size: 31px; }
  .product-footer-cta, .closing-note { padding: 65px 22px; }
  .product-footer-cta h2, .closing-note h2 { font-size: 34px; }
  .product-footer-cta p { font-size: 17px; }
  .site-footer { display: block; padding: 30px 22px; }
  .site-footer nav { margin: 25px 0; gap: 14px 24px; }
  .footer-meta { padding-top: 20px; border-top: 1px solid var(--line); }
  .legal-shell { padding: 110px 22px 65px; }
  .legal-heading h1 { font-size: 40px; }
  .legal-heading p { font-size: 18px; }
  .legal-content { margin-top: 35px; }
  .legal-article h2 { font-size: 25px; }
  .legal-article p, .legal-article li { font-size: 16px; }
  .support-links { grid-template-columns: 1fr; }
  .support-card { padding: 25px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}
@media (max-width: 560px) {
  html[lang="zh-CN"] .hero-copy h1 em { display: block; }
}
.hero-showcase .product-visual { margin-top: 0; }
html[lang="zh-CN"] .legal-heading h1 em::before { content: ""; }