@font-face { font-family: Product Geist; src: url("geist.woff2") format("woff2"); font-weight: 400 800; font-display: swap; }
@font-face { font-family: Product Noto; src: url("noto-sans-sc.woff2") format("woff2"); font-weight: 400 800; font-display: swap; }

*, *::before, *::after { box-sizing: border-box; }
:root {
  scroll-padding-top: 24px;
  --type: Product Geist, Product Noto, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  --heading-weight: 620;
  --heading-track: -.045em;
  --prose: 1.65;
}
:root:lang(zh) { --heading-weight: 660; --heading-track: -.018em; --prose: 1.8; }
body { margin: 0; color: var(--ink); background: var(--page); font: 16px/var(--prose) var(--type); }
.mask {
  color-scheme: dark;
  --page: #090909;
  --panel: #131313;
  --ink: #f5f5f5;
  --muted: #bcbcbc;
  --line: #343434;
  --accent: #e7e7e7;
  --action: #f5f5f5;
  --action-ink: #141414;
}
.vbox {
  color-scheme: dark;
  --page: #000;
  --ink: #fff;
  --muted: #c4c4c4;
  --line: #383838;
  --accent: #fff;
  --action: #fff;
  --action-ink: #080808;
}

h1, h2, h3, p, figure, ul, ol, dl, dd { margin: 0; }
h1, h2, h3 { font-weight: var(--heading-weight); letter-spacing: var(--heading-track); line-height: 1.14; }
h1, h2 { text-wrap: balance; }
h2 { font-size: clamp(29px, 3.5vw, 51px); }
h3 { font-size: clamp(19px, 1.75vw, 25px); }
a { color: inherit; text-decoration: none; }
button, input { color: inherit; font: inherit; }
button, summary { cursor: pointer; }
img, video { display: block; max-width: 100%; height: auto; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.wrap { width: min(1180px, calc(100% - 2 * clamp(18px, 5vw, 70px))); margin-inline: auto; }
.skip, .copy-feedback { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.skip:focus { width: auto; height: auto; clip-path: none; z-index: 2; padding: 8px 14px; background: var(--page); }

.mast { border-bottom: 1px solid var(--line); }
.mast-inner { min-height: 80px; display: grid; grid-template-columns: max-content minmax(0, 1fr) max-content; gap: 24px; align-items: center; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 700; font-size: 19px; line-height: 1.3; }
.brand img { flex: none; width: 42px; aspect-ratio: 1; border-radius: 9px; object-fit: contain; }
.mast nav { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 6px clamp(14px, 2.4vw, 36px); color: var(--muted); font-size: 15px; }
.mast nav a { display: inline-flex; align-items: center; min-height: 44px; }
.mast nav a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 4px; }
.mask .mast-inner { min-height: 84px; }
.mask .mast .brand img { width: 48px; }
.mask .mast nav { font-size: 16px; }
.vbox .mast-inner { min-height: 92px; }
.vbox .mast .brand { font-size: 21px; }
.vbox .mast .brand img { width: 56px; border: 1px solid var(--line); border-radius: 12px; }
.vbox .mast nav { font-size: 17px; }
.vbox .mast .nav-buy { font-size: 15px; min-height: 46px; }
.button, .text-link { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; width: fit-content; font-size: 14px; font-weight: 570; line-height: 1.25; }
.button { padding: 8px 16px; color: var(--ink); border: 1px solid var(--line); border-radius: 6px; background: transparent; text-align: center; }
.button:hover { border-color: var(--accent); }
.button.primary { color: var(--action-ink); background: var(--action); border-color: var(--action); padding-inline: 22px; }
.button.primary:hover { filter: brightness(.94); }
.text-link { color: var(--accent); text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.text-link:hover { text-decoration-thickness: 2px; }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 22px; margin-top: 27px; }
.hero-copy h1 { font-size: clamp(39px, 5vw, 72px); }
.hero-copy p { margin-top: 20px; font-size: clamp(16px, 1.65vw, 20px); color: var(--muted); }

.mask-hero { position: relative; isolation: isolate; }
.mask-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, rgb(255 255 255 / 9%) 1px, transparent 1px),
    linear-gradient(rgb(255 255 255 / 11%) 1px, transparent 1px);
  background-position: center;
  background-size: 62px 36px;
  mask-image: radial-gradient(ellipse 66% 57% at 75% 50%, #000 10%, rgb(0 0 0 / 65%) 43%, transparent 95%);
  opacity: .62;
}
.mask-stage { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); align-items: center; gap: clamp(20px, 4vw, 57px); padding-block: clamp(48px, 6vw, 92px); }
.mask-stage h1 { font-size: clamp(38px, 4.8vw, 69px); line-height: 1.12; }
.mask-stage h1:lang(en) { font-size: clamp(34px, 4.3vw, 62px); }
.mask-stage .hero-copy p { max-width: 25em; text-wrap: pretty; }
.mask-art {
  width: min(100%, 520px);
  justify-self: center;
}
.mask-art iframe { display: block; width: 100%; aspect-ratio: 1; border: 0; color-scheme: dark; }

@media (prefers-reduced-motion: no-preference) {
  .mask .features.is-entering .original-home .row > div::before {
    animation: mask-feature-rule 580ms cubic-bezier(.25,.65,.3,1) both;
  }
  .mask .features.is-entering .original-home .row > div:nth-child(2)::before { animation-delay: 90ms; }
  .mask .features.is-entering .original-home .row > div:nth-child(3)::before { animation-delay: 180ms; }
  @keyframes mask-feature-rule {
    from { transform: scaleX(.06); }
    to { transform: scaleX(1); }
  }
}

.vbox-hero { padding-block: clamp(38px, 4.5vw, 64px) 0; }
.vbox-hero .hero-copy { text-align: center; margin-inline: auto; }
.vbox-hero .hero-copy p { max-width: 34em; margin-inline: auto; text-wrap: balance; }
.vbox-hero .actions { justify-content: center; }
.vbox-showcase {
  margin-top: clamp(25px, 3.5vw, 44px);
  display: grid;
  grid-template-columns: minmax(240px, 1.1fr) minmax(210px, .9fr);
  align-items: center;
  gap: clamp(24px, 6vw, 85px);
  padding: clamp(26px, 3.5vw, 50px) clamp(28px, 9vw, 125px) clamp(20px, 4vw, 48px);
  background: var(--page);
  border: 1px solid var(--line);
  border-radius: 26px;
}
.vbox-demo { display: grid; justify-items: center; gap: 11px; }
.device-frame {
  position: relative;
  isolation: isolate;
  width: min(100%, 308px);
  padding: 5px;
  border: 1px solid #919195;
  border-radius: 38px;
  background: linear-gradient(145deg, #eeeeef 3%, #96979b 22%, #535457 43%, #c9cacc 70%, #76777b 91%);
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 40%), 0 0 0 1px #2b2b2d;
}
.device-glass { position: relative; overflow: hidden; border: 2px solid #0a0a0b; border-radius: 33px; background: #f0eff5; }
.device-glass video { width: 100%; aspect-ratio: 45 / 98; object-fit: contain; }
.device-island {
  position: absolute;
  z-index: 1;
  top: 1.4%;
  left: 50%;
  translate: -50% 0;
  width: 21%;
  aspect-ratio: 3.7;
  border-radius: 99px;
  background: #080809;
  box-shadow: inset 0 1px 1px #29292b;
  pointer-events: none;
}
.device-island::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 9%;
  translate: 0 -50%;
  width: 15%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 38% 37%, #39465d, #171a25 44%, #080809 75%);
}
.device-key {
  position: absolute;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, #85868a, #d7d7d9 55%, #737477);
  pointer-events: none;
}
.device-action { left: -4px; top: 15%; height: 3.5%; }
.device-volume-up { left: -4px; top: 21%; height: 5%; }
.device-volume-down { left: -4px; top: 28%; height: 5%; }
.device-power { right: -4px; top: 24%; height: 7%; }
.device-camera { right: -3px; top: 60%; height: 5%; background: #96979a; }
.demo-toggle { min-height: 44px; border-color: transparent; color: var(--accent); }
.demo-toggle:hover { border-color: var(--line); }
.demo-index { max-width: 360px; }
.demo-index h2 { font-size: clamp(24px, 3vw, 40px); }
.demo-index dl { margin-top: 19px; }
.demo-index dl > div { padding-block: 12px; border-top: 1px solid var(--line); }
.demo-index dt { font-weight: 650; }
.demo-index dd { font-size: 15px; color: var(--muted); }

.features, .compatibility, .installation, .faq { padding-block: clamp(48px, 8vw, 102px); }
.mask .features, .compatibility, .installation, .faq { border-top: 1px solid var(--line); }
.mask .compatibility { background: var(--panel); }
.feature-layout, .install-layout { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: clamp(26px, 6vw, 84px); align-items: start; }
.feature-list, .step-list { padding: 0; list-style: none; }
.feature-list li, .step-list li { border-top: 1px solid var(--line); padding-block: 20px; }
.mask .features .original-home .row > div { position: relative; border-top: 0; }
.mask .features .original-home .row > div::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  border-top: 1px solid var(--line);
  transform-origin: left;
  pointer-events: none;
}
.feature-list p, .step-list p, .compatibility p { color: var(--muted); margin-top: 9px; }
@media (min-width: 1000px) {
  .mask .features .feature-layout { grid-template-columns: minmax(0, .55fr) minmax(0, 1.45fr); }
  .mask .features .original-home .row > div { display: grid; grid-template-columns: minmax(155px, .55fr) minmax(0, 1fr); align-items: baseline; column-gap: 24px; }
  .mask .features .original-home p { margin: 0; }
}
.step-list { counter-reset: step; }
.step-list li { position: relative; counter-increment: step; padding-inline-start: 48px; }
.step-list li::before { position: absolute; inset-inline-start: 0; top: 20px; content: counter(step, decimal-leading-zero); color: var(--accent); font-weight: 600; font-variant-numeric: tabular-nums; }
.vbox .features .feature-layout { display: block; }
.vbox .features .original-home .row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 32px; }
.compatibility dl > div { display: flex; justify-content: space-between; gap: 14px; padding-block: 14px; border-block-end: 1px solid var(--line); }
.compatibility dl > div:first-child { border-block-start: 1px solid var(--line); }
.compatibility dt { font-weight: 620; font-variant-numeric: tabular-nums; }
.compatibility dd { color: var(--muted); }

.source-control { max-width: 460px; margin: 21px 0 10px; }
.source-control label { display: block; margin-bottom: 7px; font-size: 14px; color: var(--muted); }
.source-line { display: flex; gap: 7px; }
.source-line input { min-width: 0; flex: 1; min-height: 44px; border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; background: var(--page); font-size: 14px; }
.source-line button { flex: none; }
.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { padding-block: 15px; font-size: 17px; font-weight: 570; }
.faq-list p { color: var(--muted); padding-bottom: 17px; }
.footer { border-top: 1px solid var(--line); padding-block: 32px; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.footer .brand img { width: 36px; }
.footer-links, .footer-partners { display: flex; align-items: center; flex-wrap: wrap; }
.footer-links { gap: 0 26px; }
.footer-partners { gap: 0 12px; color: var(--muted); font-size: 14px; }

.inner { min-height: 64vh; padding-block: 30px clamp(50px, 8vw, 100px); }
.inner h1 { font-size: clamp(37px, 5vw, 66px); margin: 20px 0 29px; }
.reading { max-width: 760px; border-top: 1px solid var(--line); padding-top: 23px; overflow-wrap: anywhere; }
.guide-nav { display: flex; flex-wrap: wrap; gap: 0 clamp(12px, 2.5vw, 27px); max-width: 760px; border-bottom: 1px solid var(--line); }
.guide-nav a { display: inline-flex; align-items: center; min-height: 44px; padding-inline: 3px; border-bottom: 2px solid transparent; color: var(--muted); font-size: 15px; }
.guide-nav a:hover, .guide-nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--accent); }
.guide-nav a[aria-current="page"] { font-weight: 650; }
.guide-nav + .reading { border-top: 0; }
.reading > .feature-list, .reading > .step-list { margin-top: 19px; }
.reading > .text-link + .text-link { margin-inline-start: 15px; }
.cms { margin-top: 20px; }
.cms :is(p, li, span, div, a, font, h1, h2, h3, h4, td, th) { font-family: var(--type) !important; color: var(--ink) !important; }
.cms p { margin-block: 12px; }
.cms img { max-width: 100% !important; height: auto !important; }
.cms a { text-decoration: underline; text-underline-offset: 4px; }
.cms pre, .cms table { max-width: 100%; overflow: auto; }
.cms table { display: block; }
article.cms { font-size: clamp(16px, 1.25vw, 18px); line-height: 1.8; color: var(--ink); }
/* Imported articles use dark inline text and small type from their original light background. */
article.cms :where(*) { color: inherit !important; }
article.cms :is(section, div, p, span, font, li, a, strong, b, em, i, td, th, h6) {
  font-family: inherit !important;
  font-size: inherit !important;
  line-height: inherit !important;
}
article.cms :is(h1, h2, h3, h4, h5) {
  margin-block: 1.15em .45em;
  font-weight: 650 !important;
  line-height: 1.35 !important;
  text-wrap: wrap;
}
article.cms > :first-child { margin-top: 0; }
article.cms h1 { font-size: clamp(24px, 2.3vw, 32px) !important; }
article.cms h2 { font-size: clamp(21px, 1.9vw, 27px) !important; }
article.cms :is(h3, h4, h5) { font-size: clamp(18px, 1.55vw, 22px) !important; }
article.cms h6 { margin-block: 12px; font-weight: 400 !important; }
article.cms h1:has(img, > span:only-child[style*="font-size: 14px"]) {
  font-size: inherit !important;
  font-weight: 400 !important;
  line-height: inherit !important;
  letter-spacing: normal;
}
article.cms :is(code, pre) { font-family: ui-monospace, Consolas, monospace; }
.original-home { margin-top: 0; }
.original-home .row > div { padding-block: 20px; border-top: 1px solid var(--line); }
.original-home .row > div > img { display: none; }
.original-home .row h2 { font-size: clamp(19px, 1.75vw, 25px); text-align: start; }
.original-home p { margin: 9px 0 0; }
.original-home > hr, .original-home > hr + div, .original-home > hr + div + br { display: none; }
.support-image { max-width: min(100%, 580px); margin-top: 20px; }

@media (max-width: 760px) {
  .mast-inner { grid-template-columns: minmax(0, 1fr) max-content; gap: 0 12px; padding-top: 10px; }
  .mast nav { grid-column: 1 / -1; grid-row: 2; justify-content: flex-start; }
  .mast .brand { font-size: 17px; }
  .mast .brand img { width: 38px; }
  .mask .mast .brand img { width: 43px; }
  .vbox .mast .brand { font-size: 19px; }
  .vbox .mast .brand img { width: 48px; border-radius: 10px; }
  .vbox .mast nav { font-size: 16px; }
  .mask-stage { grid-template-columns: 1fr; gap: 16px; padding-block: 37px 20px; }
  .mask-hero::before {
    background-size: 42px 28px;
    mask-image: radial-gradient(ellipse 74% 34% at 50% 75%, #000 15%, rgb(0 0 0 / 64%) 52%, transparent 98%);
  }
  .mask-art { width: min(100%, 384px); justify-self: center; }
  .feature-layout, .install-layout { grid-template-columns: 1fr; }
  .vbox .features .original-home .row { grid-template-columns: 1fr; gap: 0; margin-top: 22px; }
  .vbox-showcase { grid-template-columns: 1fr; border-radius: 18px; }
  .demo-index { max-width: none; }
}
@media (max-width: 400px) {
  .mast nav { gap: 0 10px; font-size: 14px; }
  .mast .nav-buy { padding-inline: 9px; }
  .mask .mast nav { font-size: 14px; }
  .vbox .mast nav { font-size: 15px; }
  .vbox .mast .nav-buy { font-size: 14px; }
  .vbox-showcase { padding-inline: 19px; }
  .source-line button { padding-inline: 9px; }
}
@media (max-width: 350px) {
  .mast nav { column-gap: 8px; }
  .vbox .mast nav { font-size: 14px; }
}