:root {
  color-scheme: light;
  --ink: #202631;
  --muted: #677181;
  --blue: #2868cf;
  --blue-dark: #1d52ab;
  --paper: #f7f8fa;
  --line: #dfe4ec;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.7 var(--font); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-underline-offset: 4px; }
button { font: inherit; }
a, button, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid #2868cf; outline-offset: 6px; border-radius: 3px; }
button:disabled { cursor: default; }
::selection { background: #d8e8ff; color: #153f7d; }
[hidden] { display: none !important; }
.shell { width: min(1120px, calc(100% - 96px)); margin-inline: auto; }
.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: 10; top: -100px; left: 24px; padding: 12px 20px; background: white; color: var(--blue); box-shadow: 0 2px 15px #20263120; }
.skip-link:focus { top: 12px; }
.site-header { border-bottom: 1px solid #e6e9ef; }
.nav { height: 86px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-size: 20px; letter-spacing: -.6px; font-weight: 650; white-space: nowrap; }
.brand img { border-radius: 9px; }
.nav-links { display: flex; align-items: center; gap: 30px; font-size: 13px; font-weight: 500; }
.nav-links a { text-decoration: none; }
.nav-links a:hover, .site-footer a:hover { color: var(--blue); }
.nav-links [aria-current="page"] { color: var(--blue); }
.nav-get { background: #e9edf3; padding: 8px 16px; border-radius: 8px; }
.nav-get span { margin-left: 10px; }
.language-link { color: var(--muted); }
.hero { display: grid; grid-template-columns: 1fr 480px; align-items: center; gap: 58px; padding-top: 90px; padding-bottom: 84px; }
.eyebrow { color: var(--muted); font-size: 12px; letter-spacing: 1px; font-weight: 550; margin: 0 0 22px; }
.status-dot { display: inline-block; width: 6px; height: 6px; background: var(--blue); border-radius: 50%; vertical-align: 2px; margin-right: 8px; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }
h1 { font-size: clamp(50px, 5.2vw, 68px); line-height: 1.17; letter-spacing: -2.6px; font-weight: 650; margin-bottom: 26px; }
h1 span { color: var(--blue); }
.hero-lead { font-size: 18px; line-height: 1.9; color: #596575; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 14px; align-items: flex-start; flex-wrap: wrap; scroll-margin-top: 30px; }
.hero-action { display: flex; flex-direction: column; align-items: stretch; gap: 8px; min-width: 150px; }
.hero-action .button { min-width: 150px; }
.action-note { color: #677181; font-size: 10px; text-align: center; white-space: nowrap; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 22px; min-height: 47px; padding: 10px 22px; border-radius: 9px; text-decoration: none; font-size: 14px; font-weight: 550; }
.button.unavailable { border: 1px solid #dbe1e9; background: #edf0f5; color: #788499; cursor: default; }
.primary { background: var(--blue); color: white; box-shadow: 0 3px 6px #2868cf16; }
.primary:hover { background: var(--blue-dark); }
.secondary { background: white; border: 1px solid #cbd8ec; color: var(--blue); }
.secondary:hover { border-color: var(--blue); background: #f8fbff; }
.hero-meta { margin-top: 15px; margin-bottom: 0; font-size: 11px; color: var(--muted); }
.hero-meta span { padding-inline: 5px; }
.gesture-demo { margin: 0; padding: 25px 28px 18px; background: #edf2fa; border: 1px solid #e3eaf5; border-radius: 25px; box-shadow: inset 0 1px 0 #fff; }
.demo-heading { display: flex; justify-content: space-between; align-items: center; color: #697991; font-size: 11px; }
.demo-heading > span:first-child { font-weight: 550; letter-spacing: .3px; }
.demo-tag { background: #e2eaf7; border-radius: 5px; padding: 3px 8px; font-size: 9px; color: #546d94; }
.key-stage { height: 199px; display: flex; align-items: center; justify-content: center; gap: 17px; padding-top: 12px; }
.keycap { position: relative; width: 132px; height: 132px; flex-shrink: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; background: linear-gradient(150deg, #fff 35%, #f1f5fb); border: 1px solid #d8e0ec; border-bottom: 6px solid #c5d2e4; border-radius: 22px; box-shadow: 0 16px 22px -11px #7183a355, inset 0 1px 2px white; }
.key-first { transform: rotate(-8deg); }
.key-second { transform: rotate(8deg); }
.key-number { position: absolute; top: 9px; left: 12px; font-size: 9px; color: #8e9bb0; letter-spacing: 1px; }
.command { color: var(--blue); font-size: 57px; line-height: 1.1; font-weight: 400; }
.key-label { color: #6883ab; font-size: 10px; margin-top: 7px; letter-spacing: .1px; }
.tap-connector { display: flex; gap: 3px; }
.tap-connector i { width: 3px; height: 3px; border-radius: 50%; background: #b8c6da; }
.demo-instruction { text-align: center; color: #738096; font-size: 11px; margin: 0 0 21px; }
.demo-search { display: flex; align-items: center; gap: 14px; height: 62px; padding: 0 19px; color: #8290a4; font-size: 20px; font-weight: 400; background: #ffffffeb; border: 1px solid #fff; border-radius: 12px; box-shadow: 0 10px 22px -10px #66799940; }
.search-icon { position: relative; width: 17px; height: 17px; border: 2px solid #7e8ea5; border-radius: 50%; flex-shrink: 0; margin-right: 2px; }
.search-icon::after { position: absolute; content: ""; width: 7px; height: 2px; background: #7e8ea5; right: -5px; bottom: -3px; transform: rotate(45deg); border-radius: 2px; }
.search-caret { width: 1px; height: 23px; background: #7ea7e7; margin-left: auto; }
.gesture-demo figcaption { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 18px; min-height: 22px; color: #7b8799; font-size: 9px; }
.replay { padding: 0; border: 0; background: transparent; color: #536c90; font-size: 10px; cursor: pointer; white-space: nowrap; }
.replay:hover { color: var(--blue); }
.gesture-demo.playing .key-first { animation: tap-first 1.4s ease-in-out; }
.gesture-demo.playing .key-second { animation: tap-second 1.4s ease-in-out; }
.gesture-demo.playing .demo-search { animation: reveal-search 1.4s ease-in-out; }
@keyframes tap-first { 0%, 30%, 100% { transform: rotate(-8deg); } 12%, 22% { transform: translateY(7px) rotate(-8deg); border-bottom-width: 2px; } }
@keyframes tap-second { 0%, 30%, 65%, 100% { transform: rotate(8deg); } 42%, 54% { transform: translateY(7px) rotate(8deg); border-bottom-width: 2px; } }
@keyframes reveal-search { 0%, 52% { opacity: .25; transform: translateY(5px); } 80%, 100% { opacity: 1; transform: translateY(0); } }
.qualities { display: grid; grid-template-columns: repeat(3, 1fr); padding: 22px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); color: #5a6575; }
.qualities p { margin: 0; font-size: 12px; text-align: center; }
.qualities p + p { border-left: 1px solid var(--line); }
.qualities span { color: var(--blue); font-size: 16px; padding-right: 10px; vertical-align: -1px; }
.quiet-section { display: grid; grid-template-columns: 1fr 1fr; gap: 95px; padding-block: 108px; }
h2 { font-size: clamp(29px, 3vw, 37px); line-height: 1.4; letter-spacing: -1.1px; font-weight: 600; margin-bottom: 24px; }
.quiet-copy { padding-top: 4px; }
.quiet-copy > p { color: #657082; font-size: 15px; line-height: 1.9; margin-bottom: 24px; }
.plain-list { list-style: none; padding: 0; margin: 0; }
.plain-list li { color: #687385; font-size: 13px; margin-top: 15px; padding-left: 17px; position: relative; }
.plain-list li::before { content: ""; position: absolute; left: 0; top: 10px; width: 4px; height: 4px; background: #96a7c0; border-radius: 50%; }
.plain-list strong { color: #394657; font-weight: 550; }
.get-section { padding-block: 88px 63px; background: #fff; border-block: 1px solid #e9ecf1; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 38px; }
.section-heading h2 { margin-bottom: 0; }
.section-heading > p { font-size: 13px; color: var(--muted); line-height: 1.9; margin-bottom: 8px; }
.download-options { border-top: 1px solid var(--line); }
.download-row { display: grid; grid-template-columns: 65px 1fr 220px; gap: 24px; align-items: center; padding-block: 34px; border-bottom: 1px solid var(--line); }
.download-mark { display: grid; place-items: center; width: 59px; height: 59px; border-radius: 15px; background: #eff3f9; font-weight: 500; font-size: 23px; letter-spacing: -1px; }
.code-mark { color: #465777; }
.store-mark { color: var(--blue); font-family: var(--font); font-size: 35px; font-weight: 400; }
h3 { font-size: 20px; line-height: 1.5; letter-spacing: -.35px; font-weight: 600; margin-bottom: 8px; }
.download-copy p { max-width: 510px; margin: 0 0 9px; font-size: 13px; color: var(--muted); line-height: 1.85; }
.option-detail { color: #8a94a2; font-size: 11px; }
.download-action { text-align: right; }
.availability { display: inline-flex; gap: 8px; align-items: center; padding: 10px 14px; font-size: 12px; border: 1px solid #dde4ee; background: #f7f9fc; border-radius: 8px; color: #63748b; white-space: nowrap; }
.availability::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: #9baec8; }
.download-action small { display: block; margin-top: 10px; font-size: 10px; line-height: 1.5; color: #8a94a2; }
.download-action .button { font-size: 12px; gap: 10px; }
.release-note { font-size: 11px; color: #8a94a2; margin: 20px 0 0; }
.setup-section { padding-block: 80px 95px; border-top: 1px solid var(--line); }
.setup-steps { list-style: none; padding: 0; margin: 45px 0 28px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 60px; }
.step-number { display: block; font-size: 12px; font-weight: 500; letter-spacing: 1px; color: var(--blue); margin-bottom: 17px; }
.setup-steps h3 { font-size: 18px; }
.setup-steps p { font-size: 13px; color: var(--muted); line-height: 1.9; margin-bottom: 0; }
.text-link { color: var(--blue); font-size: 13px; font-weight: 500; text-decoration: none; }
.text-link:hover { text-decoration: underline; }
.text-link span { padding-left: 8px; }
.privacy-strip { background: #edf3fb; border-top: 1px solid #e3eaf4; }
.privacy-inner { padding-block: 57px; display: grid; grid-template-columns: 82px 1fr auto; align-items: center; gap: 28px; }
.privacy-symbol { width: 66px; height: 66px; display: grid; place-items: center; border: 1px solid #c8d8ee; border-radius: 19px; color: #4c7fca; font-size: 37px; }
.privacy-inner .eyebrow { font-size: 10px; margin-bottom: 9px; color: #6f88ab; }
.privacy-inner h2 { margin-bottom: 10px; font-size: 27px; }
.privacy-inner p:last-child { margin-bottom: 0; font-size: 12px; line-height: 1.9; color: #667d9c; }
.site-footer { padding-top: 35px; padding-bottom: 24px; }
.footer-top { display: flex; align-items: center; gap: 25px; }
.footer-top .brand { font-size: 16px; gap: 8px; }
.footer-top > p { margin: 0; font-size: 11px; color: #85909f; }
.footer-top nav { display: flex; gap: 25px; margin-left: auto; font-size: 11px; }
.footer-top nav a { text-decoration: none; color: #677589; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 25px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 10px; color: #8b95a3; }
.document-head { padding-top: 72px; padding-bottom: 46px; border-bottom: 1px solid var(--line); }
.document-head h1 { font-size: 52px; margin-bottom: 21px; letter-spacing: -1.7px; }
.document-head > p:not(.eyebrow) { font-size: 17px; color: var(--muted); margin-bottom: 22px; }
.document-meta { font-size: 11px; color: #8a94a2; }
.document-meta span { padding-inline: 9px; }
.document-layout { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 72px; padding-block: 56px 88px; }
.document-nav { display: flex; flex-direction: column; align-items: flex-start; gap: 13px; position: sticky; top: 28px; align-self: start; font-size: 12px; }
.document-nav a { color: #7a8698; text-decoration: none; }
.document-nav a:hover { color: var(--blue); }
.document-body { max-width: 740px; }
.document-body section + section { margin-top: 42px; }
.document-body h2 { font-size: 23px; letter-spacing: -.5px; margin-bottom: 16px; }
.document-body p { color: #667181; font-size: 14px; line-height: 1.95; margin-bottom: 14px; }
.document-body a { color: var(--blue); }
.document-body .document-note { background: #ecf1f8; border-left: 2px solid #bccfe8; padding: 16px 20px; color: #6c7e98; font-size: 12px; margin-top: 25px; }
.support-content { padding-bottom: 68px; }
.section-index { display: block; color: #8390a3; font-size: 11px; letter-spacing: .6px; margin-bottom: 17px; }
.quick-start { display: grid; grid-template-columns: 1fr 1.2fr; gap: 60px; padding-block: 58px; border-bottom: 1px solid var(--line); }
.quick-start h2 { font-size: 28px; }
.quick-start ol { padding-left: 20px; margin: 0; color: #697587; font-size: 14px; }
.quick-start li + li { margin-top: 15px; }
.quick-start strong { color: #394657; font-weight: 550; }
.faq-section { padding-block: 59px; }
.faq-section > h2 { font-size: 30px; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); padding-inline: 1px; }
summary { cursor: pointer; padding: 21px 30px 21px 0; font-size: 15px; font-weight: 500; position: relative; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 5px; top: 17px; color: #8090a6; font-weight: 350; font-size: 23px; }
details[open] summary::after { content: "−"; }
details > div { max-width: 850px; padding: 0 25px 22px 0; color: #697587; font-size: 14px; line-height: 1.95; }
details p { margin-bottom: 12px; }
details p:last-child { margin-bottom: 0; }
details ol { padding-left: 22px; margin: 0; }
details li + li { margin-top: 9px; }
details a { color: var(--blue); }
.contact-section { display: grid; grid-template-columns: 1fr 300px; gap: 80px; padding: 35px 0; align-items: center; }
.contact-section h2 { font-size: 30px; margin-bottom: 15px; }
.contact-section p { font-size: 13px; color: var(--muted); line-height: 1.9; margin-bottom: 0; }
.contact-box { padding: 25px; background: #edf2f9; border: 1px solid #e0e8f3; border-radius: 12px; text-align: center; }
.contact-box .availability { background: none; border: none; padding: 0; }
.contact-box p { font-size: 10px; color: #8291a5; margin-top: 10px; }
.contact-box a { color: var(--blue); overflow-wrap: anywhere; font-size: 13px; }
@media (max-width: 1100px) {
  .hero { grid-template-columns: 1fr 420px; gap: 35px; }
  h1 { font-size: 55px; }
  html[lang="en"] h1 { font-size: 51px; }
  .keycap { width: 118px; height: 118px; }
  .quiet-section { gap: 55px; }
  .download-row { grid-template-columns: 55px 1fr 205px; gap: 20px; }
  .download-mark { width: 52px; height: 52px; }
  .privacy-inner { grid-template-columns: 68px 1fr; gap: 20px; }
  .privacy-inner > a { grid-column: 2; }
}
@media (max-width: 880px) {
  .shell { width: min(680px, calc(100% - 56px)); }
  .hero { grid-template-columns: 1fr; padding-block: 56px 48px; gap: 42px; text-align: center; }
  .hero-copy { max-width: 560px; margin-inline: auto; }
  .hero-actions { justify-content: center; }
  h1, html[lang="en"] h1 { font-size: 62px; }
  .gesture-demo { width: 100%; max-width: 490px; margin-inline: auto; text-align: left; }
  .keycap { width: 132px; height: 132px; }
  .qualities p { font-size: 10px; }
  .qualities span { padding-right: 5px; }
  .quiet-section { padding-block: 70px; grid-template-columns: 1fr; gap: 16px; }
  .quiet-section h2 br { display: none; }
  html[lang="zh-Hans"] .quiet-section h2 br { display: initial; }
  .quiet-section .eyebrow { margin-bottom: 17px; }
  .quiet-copy > p { max-width: 520px; }
  .section-heading { align-items: flex-start; gap: 20px; }
  .section-heading > p { padding-top: 44px; font-size: 11px; }
  .download-row { grid-template-columns: 55px 1fr; }
  .download-action { grid-column: 2; text-align: left; }
  .download-action small { display: inline; margin-left: 10px; }
  .get-section { padding-block: 65px 45px; }
  .setup-section { padding-block: 66px; }
  .setup-steps { gap: 28px; }
  .setup-steps h3 { font-size: 16px; }
  .setup-steps p { font-size: 12px; }
  .footer-top { flex-wrap: wrap; gap: 17px; }
  .footer-top nav { width: 100%; margin-left: 0; }
  .document-layout { grid-template-columns: 145px minmax(0, 1fr); gap: 35px; }
  .quick-start { grid-template-columns: 1fr; gap: 10px; }
  .contact-section { grid-template-columns: 1fr 250px; gap: 35px; }
}
@media (max-width: 560px) {
  .shell { width: calc(100% - 40px); }
  .nav { height: 72px; gap: 12px; }
  .brand { font-size: 18px; gap: 7px; }
  .brand img { width: 29px; height: 29px; }
  .nav-links { gap: 17px; font-size: 11px; }
  .nav-get { display: none; }
  .hero { padding-top: 43px; gap: 34px; }
  .eyebrow { font-size: 10px; margin-bottom: 20px; }
  h1, html[lang="en"] h1 { font-size: clamp(42px, 11vw, 56px); letter-spacing: -1.9px; margin-bottom: 20px; }
  .hero-lead { font-size: 16px; line-height: 1.85; margin-bottom: 25px; }
  .button { min-height: 45px; font-size: 13px; }
  .hero-actions { gap: 12px; }
  .hero-action, .hero-action .button { min-width: 126px; }
  .action-note { font-size: 9px; }
  .hero-meta { font-size: 10px; }
  .gesture-demo { padding: 20px 19px 14px; border-radius: 20px; }
  .demo-heading { font-size: 10px; }
  .demo-tag { font-size: 8px; }
  .key-stage { height: 177px; gap: 11px; }
  .keycap { width: 105px; height: 105px; border-radius: 18px; }
  .command { font-size: 45px; }
  .key-label { font-size: 8px; margin-top: 4px; }
  .key-number { font-size: 8px; left: 10px; top: 7px; }
  .demo-search { height: 55px; font-size: 18px; padding-inline: 16px; }
  .demo-instruction { font-size: 10px; margin-bottom: 17px; }
  .gesture-demo figcaption { font-size: 8px; gap: 8px; }
  .replay { font-size: 9px; }
  .qualities { grid-template-columns: 1fr; gap: 12px; padding-block: 20px; }
  .qualities p { font-size: 11px; }
  .qualities p + p { border: 0; }
  .quiet-section { padding-block: 56px; }
  h2 { font-size: 28px; letter-spacing: -.8px; }
  .quiet-copy > p { font-size: 14px; }
  .plain-list li { font-size: 12px; }
  .section-heading { display: block; margin-bottom: 28px; }
  .section-heading > p { padding-top: 17px; font-size: 12px; }
  .get-section { padding-block: 52px 35px; }
  .download-row { grid-template-columns: 44px minmax(0, 1fr); gap: 15px; padding-block: 29px; align-items: start; }
  .download-mark { width: 41px; height: 41px; border-radius: 11px; font-size: 19px; margin-top: 3px; }
  .store-mark { font-size: 28px; }
  .download-copy h3 { font-size: 18px; }
  .download-copy p { font-size: 12px; }
  .option-detail { font-size: 10px; }
  .download-action small { display: block; margin: 8px 0 0; }
  .availability { font-size: 11px; padding: 9px 11px; }
  .release-note { font-size: 10px; line-height: 1.9; }
  .setup-section { padding-block: 55px; }
  .setup-steps { grid-template-columns: 1fr; gap: 29px; margin-top: 30px; }
  .setup-steps li { padding-left: 42px; position: relative; }
  .step-number { position: absolute; top: 3px; left: 0; font-size: 11px; }
  .setup-steps h3 { font-size: 17px; }
  .setup-steps p { font-size: 13px; }
  .privacy-inner { padding-block: 39px; grid-template-columns: 1fr; gap: 16px; }
  .privacy-symbol { width: 49px; height: 49px; font-size: 29px; border-radius: 14px; }
  .privacy-inner > a { grid-column: 1; }
  .privacy-inner h2 { font-size: 26px; }
  .privacy-inner p:last-child { font-size: 12px; }
  .desktop-break { display: none; }
  .footer-top > p { font-size: 10px; }
  .footer-bottom { font-size: 9px; }
  .document-head { padding-top: 46px; padding-bottom: 33px; }
  .document-head h1, html[lang="en"] .document-head h1 { font-size: 39px; }
  .document-head > p:not(.eyebrow) { font-size: 15px; }
  .document-meta { font-size: 10px; }
  .document-layout { display: block; padding-block: 30px 50px; }
  .document-nav { display: flex; flex-direction: row; flex-wrap: wrap; position: static; gap: 10px 17px; padding-bottom: 27px; margin-bottom: 31px; border-bottom: 1px solid var(--line); font-size: 11px; }
  .document-body h2 { font-size: 22px; }
  .document-body p { font-size: 13px; }
  .document-body section + section { margin-top: 34px; }
  .quick-start { padding-block: 36px; }
  .quick-start h2 { font-size: 24px; }
  .quick-start ol { font-size: 13px; }
  .faq-section { padding-block: 39px; }
  .faq-section > h2 { font-size: 27px; }
  summary { font-size: 14px; padding-block: 19px; }
  details > div { font-size: 13px; padding-right: 10px; }
  .contact-section { grid-template-columns: 1fr; gap: 25px; padding-top: 15px; }
  .contact-section h2 { font-size: 27px; }
  .contact-box { text-align: left; padding: 21px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}