@charset "UTF-8";
:root {
  --paper:#faf9f6;
  --ink:#172b3a;
  --muted:#61717a;
  --blue:#285bf0;
  --line:#dde2e2;
  --white:#fff;
  --wash:#edf0ed;
  --radius:24px;
}
* {
  box-sizing:border-box;
}
html {
  scroll-behavior:smooth;
  scroll-padding-top:90px;
}
body {
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a {
  color:inherit;
  text-decoration:none;
}
a:hover {
  color:var(--blue);
}
a:focus-visible,summary:focus-visible {
  outline:3px solid var(--blue);
  outline-offset:5px;
}
img {
  display:block;
  max-width:100%;
  height:auto;
}
h1,h2,h3,p {
  margin-top:0;
}
h1,h2,h3 {
  letter-spacing:-.045em;
  line-height:1.12;
}
h1 {
  font-size:clamp(42px,5.4vw,70px);
  margin:18px 0 24px;
}
h1 span {
  color:var(--blue);
}
h2 {
  font-size:clamp(32px,3.6vw,46px);
  font-weight:650;
}
h3 {
  font-size:23px;
  line-height:1.25;
}
p {
  margin-bottom:20px;
}
.wrap {
  width:min(1160px,calc(100% - 72px));
  margin-inline:auto;
}
.skip {
  position:absolute;
  top:-80px;
  left:16px;
  padding:12px;
  background:var(--white);
  z-index:5;
}
.skip:focus {
  top:10px;
}
.site-header {
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.header-inner {
  min-height:92px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand {
  display:flex;
  align-items:center;
  gap:12px;
  font-size:22px;
  font-weight:750;
  letter-spacing:-.04em;
}
.brand img {
  border-radius:13px;
  width:40px;
  height:40px;
}
.nav {
  display:flex;
  align-items:center;
  gap:25px;
  font-size:14px;
  font-weight:550;
}
.nav .language {
  padding-left:22px;
  border-left:1px solid var(--line);
}
.button {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:16px;
  padding:14px 23px;
  border:1px solid var(--blue);
  background:var(--blue);
  color:var(--white);
  border-radius:9px;
  font-size:15px;
  font-weight:650;
  line-height:1.4;
}
.button:hover {
  background:#1948cf;
  color:var(--white);
}
.button.small {
  padding:10px 16px;
}
.button.secondary {
  background:transparent;
  color:var(--ink);
  border-color:var(--line);
}
.button.secondary:hover {
  border-color:var(--ink);
}
.button .arrow {
  font-size:19px;
}
.hero {
  display:grid;
  grid-template-columns:.95fr 1.05fr;
  gap:48px;
  align-items:center;
  padding:78px 0 62px;
}
.eyebrow {
  font-size:11px;
  font-weight:750;
  letter-spacing:.14em;
  color:var(--muted);
  text-transform:uppercase;
}
.lead {
  font-size:18px;
  line-height:1.7;
  color:var(--muted);
  max-width:36em;
}
.actions {
  display:flex;
  gap:12px;
  align-items:center;
  flex-wrap:wrap;
  margin:30px 0 22px;
}
.trust {
  font-size:12px;
  color:var(--muted);
  margin:0;
}
.hero-visual {
  margin:0;
  background:var(--wash);
  border-radius:var(--radius);
  padding:26px 22px 22px;
}
.screen {
  background:#111923;
  padding:9px;
  border-radius:18px;
  box-shadow:0 20px 36px #15283c1c;
  overflow:hidden;
}
.screen img {
  border-radius:10px;
  width:100%;
}
.hero-visual figcaption {
  padding:25px 6px 0;
}
.hero-visual strong {
  font-size:19px;
  font-weight:650;
  letter-spacing:-.03em;
}
.hero-visual p {
  font-size:13px;
  margin:6px 0 0;
  color:var(--muted);
}
.preview-note {
  font-size:10px!important;
  margin-top:20px!important;
}
.platform-line {
  padding:20px 0;
  border-block:1px solid var(--line);
  font-size:12px;
  color:var(--muted);
  display:flex;
  align-items:center;
  gap:12px;
}
.platform-line::before {
  content:"";
  width:7px;
  height:7px;
  border-radius:50%;
  background:#358565;
  flex-shrink:0;
}
.section {
  padding:84px 0;
}
.section-head {
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:50px;
  margin-bottom:40px;
}
.section-head h2 {
  margin:12px 0 0;
}
.feature-list {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:36px;
}
.feature {
  border-top:1px solid var(--line);
  padding-top:20px;
}
.feature .number {
  display:block;
  font-size:12px;
  color:var(--muted);
  margin-bottom:28px;
}
.feature h3 {
  font-size:22px;
  margin-bottom:14px;
}
.feature p {
  font-size:15px;
  color:var(--muted);
  margin:0;
}
.gallery-section {
  background:var(--wash);
  border-radius:var(--radius);
  padding:44px 48px;
  margin-top:8px;
}
.gallery-section h2 {
  max-width:14em;
  margin-bottom:35px;
}
.gallery {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:44px;
}
.gallery figure {
  margin:0;
  display:flex;
  flex-direction:column;
  align-items:center;
}
.phone {
  background:#121a25;
  padding:8px;
  border-radius:26px;
  width:236px;
  box-shadow:0 15px 30px #1022391a;
}
.phone img {
  width:100%;
  border-radius:20px;
}
.gallery figcaption {
  font-size:14px;
  text-align:center;
  margin-top:24px;
}
.gallery-note {
  font-size:11px;
  color:var(--muted);
  margin:28px 0 0;
}
.facts {
  display:grid;
  grid-template-columns:.8fr 1.2fr;
  gap:80px;
}
.facts h2 {
  margin-top:14px;
}
.fact-table {
  margin:0;
}
.fact-row {
  display:grid;
  grid-template-columns:135px 1fr;
  gap:20px;
  border-top:1px solid var(--line);
  padding:19px 0;
  font-size:14px;
}
.fact-row dt {
  font-weight:650;
}
.fact-row dd {
  margin:0;
  color:var(--muted);
}
.download-section {
  background:#172b3a;
  color:#fff;
  padding:62px 0 56px;
}
.download-section h2 {
  font-size:clamp(34px,4vw,50px);
  max-width:18em;
}
.download-section .lead {
  color:#becad1;
  font-size:16px;
}
.store-list {
  margin-top:36px;
}
.store-row {
  display:grid;
  grid-template-columns:1fr 1.6fr auto;
  gap:24px;
  align-items:center;
  border-top:1px solid #ffffff26;
  padding:23px 0;
}
.store-row .platform {
  font-size:12px;
  color:#becad1;
}
.store-row h3 {
  font-size:21px;
  margin:4px 0 0;
}
.store-detail {
  color:#becad1;
  font-size:13px;
}
.store-row .button {
  min-width:174px;
}
.coming {
  border:1px solid #ffffff40;
  border-radius:9px;
  padding:13px 23px;
  min-width:174px;
  text-align:center;
  font-size:13px;
  color:#becad1;
}
.download-help {
  display:inline-block;
  color:#d8e1e5;
  font-size:13px;
  margin-top:14px;
  text-decoration:underline;
  text-underline-offset:4px;
}
.faq-list {
  border-top:1px solid var(--line);
}
details {
  border-bottom:1px solid var(--line);
  padding:21px 0;
}
summary {
  font-size:17px;
  font-weight:600;
  cursor:pointer;
  list-style:none;
  padding-right:36px;
  position:relative;
}
summary::-webkit-details-marker {
  display:none;
}
summary::after {
  content:"+";
  position:absolute;
  right:4px;
  color:var(--muted);
  font-size:23px;
  top:-4px;
  font-weight:400;
}
details[open] summary::after {
  content:"−";
}
details p {
  color:var(--muted);
  font-size:15px;
  max-width:830px;
  margin:16px 0 0;
  line-height:1.8;
}
.text-link {
  color:var(--blue);
  font-size:14px;
  font-weight:600;
  text-decoration:underline;
  text-underline-offset:4px;
}
.faq-more {
  margin:24px 0 0;
}
.feedback {
  display:grid;
  grid-template-columns:1.15fr 1fr;
  gap:60px;
  padding:46px 0 62px;
  border-top:1px solid var(--line);
  align-items:center;
}
.feedback h2 {
  font-size:33px;
  margin-bottom:17px;
  max-width:20em;
}
.feedback p {
  color:var(--muted);
  font-size:15px;
  margin:0;
}
.feedback .actions {
  margin:0 0 15px;
}
.feedback .note {
  font-size:11px;
}
.site-footer {
  background:#f1f1ec;
  padding:35px 0 28px;
}
.footer-top {
  display:flex;
  justify-content:space-between;
  gap:24px;
  align-items:center;
  margin-bottom:24px;
}
.footer-brand {
  font-size:13px;
  font-weight:600;
}
.footer-links {
  display:flex;
  gap:21px;
  font-size:12px;
}
.fineprint {
  font-size:11px;
  color:var(--muted);
  line-height:1.8;
  max-width:1050px;
  margin:0 0 10px;
}
.updated {
  font-size:10px;
  color:var(--muted);
  margin:0;
}
.page-intro {
  padding:65px 0 40px;
  max-width:850px;
}
.page-intro h1 {
  font-size:clamp(38px,5vw,60px);
}
.breadcrumb {
  font-size:12px;
  color:var(--muted);
  margin-bottom:30px;
}
.content-section {
  max-width:860px;
  padding-bottom:75px;
}
.prose h2 {
  font-size:28px;
  margin-top:40px;
}
.prose p,.prose li {
  font-size:16px;
  color:var(--muted);
  line-height:1.8;
}
.prose a {
  color:var(--blue);
  text-decoration:underline;
  text-underline-offset:3px;
}
.prose li {
  margin-bottom:12px;
}
.status-note {
  padding:18px 22px;
  border-left:3px solid var(--blue);
  background:var(--wash);
  font-size:14px;
}
.not-found {
  padding:100px 0;
  min-height:60vh;
}
.not-found h1 {
  font-size:60px;
}
body:lang(zh-CN) h1 {
  letter-spacing:-.055em;
  font-size:clamp(38px,5vw,64px);
}
body:lang(zh-CN) .lead {
  line-height:1.9;
}
body:lang(zh-CN) .eyebrow {
  letter-spacing:.12em;
}
body:lang(zh-CN) .hero {
  gap:45px;
}
body:lang(zh-CN) .facts {
  gap:60px;
}
@media(min-width:1400px) {
  .hero {
    padding-block:95px 80px;
  }
}
@media(max-width:980px) {
  .nav {
    gap:17px;
  }
  .hero {
    gap:30px;
    padding-top:60px;
  }
  h1 {
    font-size:52px;
  }
  .hero-visual {
    padding:18px;
  }
  .facts {
    gap:35px;
  }
  .feature-list {
    gap:24px;
  }
  .wrap {
    width:calc(100% - 48px);
  }
  .nav .features-link {
    display:none;
  }
  .gallery-section {
    padding:36px;
  }
  .store-row {
    grid-template-columns:1fr 1.1fr auto;
    gap:16px;
  }
  .feedback {
    gap:30px;
  }
  .hero .actions .button {
    font-size:13px;
    padding:13px 17px;
  }
}
@media(max-width:720px) {
  .wrap {
    width:calc(100% - 36px);
  }
  .header-inner {
    min-height:78px;
    gap:12px;
  }
  .brand {
    font-size:20px;
    gap:8px;
  }
  .brand img {
    width:34px;
    height:34px;
    border-radius:10px;
  }
  .nav {
    gap:15px;
    font-size:12px;
  }
  .nav .github-link,.nav .faq-link,.nav .header-cta {
    display:none;
  }
  .nav .language {
    border:0;
    padding:0;
  }
  .hero {
    grid-template-columns:1fr;
    padding:48px 0 35px;
    gap:35px;
  }
  .hero h1 {
    font-size:clamp(43px,9vw,60px);
  }
  body:lang(zh-CN) .hero h1 {
    font-size:clamp(38px,8.9vw,58px);
  }
  .hero .lead {
    font-size:16px;
    max-width:32em;
  }
  .hero .actions {
    margin:25px 0 18px;
  }
  .trust {
    font-size:11px;
  }
  .hero-visual {
    padding:22px;
  }
  .hero-visual figcaption {
    padding-top:22px;
  }
  .platform-line {
    font-size:11px;
    line-height:1.8;
  }
  .section {
    padding:54px 0;
  }
  .section-head {
    display:block;
    margin-bottom:30px;
  }
  h2 {
    font-size:32px;
  }
  .feature-list {
    grid-template-columns:1fr;
    gap:25px;
  }
  .feature {
    display:grid;
    grid-template-columns:30px 1fr;
    column-gap:15px;
    padding-top:20px;
  }
  .feature .number {
    grid-row:1/3;
    margin-top:4px;
    margin-bottom:0;
  }
  .feature h3 {
    font-size:21px;
  }
  .feature p {
    font-size:14px;
  }
  .gallery-section {
    border-radius:16px;
    padding:30px 18px;
  }
  .gallery-section h2 {
    font-size:29px;
  }
  .gallery {
    gap:18px;
    align-items:start;
  }
  .phone {
    width:100%;
    padding:5px;
    border-radius:17px;
  }
  .phone img {
    border-radius:12px;
  }
  .gallery figcaption {
    font-size:11px;
    margin-top:15px;
  }
  .gallery-note {
    font-size:10px;
    margin-top:22px;
  }
  .facts {
    grid-template-columns:1fr;
    gap:18px;
  }
  .facts h2 {
    max-width:14em;
  }
  .fact-row {
    grid-template-columns:96px 1fr;
    font-size:13px;
    gap:15px;
    padding:17px 0;
  }
  .download-section {
    padding:45px 0;
  }
  .download-section h2 {
    font-size:34px;
  }
  .store-row {
    grid-template-columns:1fr auto;
    gap:12px;
    padding:23px 0;
  }
  .store-detail {
    grid-row:2;
    grid-column:1/3;
    font-size:12px;
  }
  .store-row .button,.coming {
    font-size:12px;
    min-width:0;
    padding:12px 15px;
    grid-column:2;
    grid-row:1;
  }
  .store-row h3 {
    font-size:21px;
  }
  .store-row .platform {
    font-size:10px;
  }
  summary {
    font-size:15px;
    line-height:1.6;
  }
  details p {
    font-size:14px;
  }
  .feedback {
    grid-template-columns:1fr;
    gap:24px;
    padding:38px 0 44px;
  }
  .feedback h2 {
    font-size:29px;
  }
  .feedback .button {
    font-size:13px;
    padding:13px 18px;
  }
  .footer-top {
    display:block;
  }
  .footer-links {
    margin-top:15px;
    gap:18px;
    flex-wrap:wrap;
  }
  .fineprint {
    font-size:10px;
  }
  .page-intro {
    padding:40px 0 24px;
  }
  .page-intro h1 {
    font-size:39px;
  }
  .page-intro .lead {
    font-size:16px;
  }
  .content-section {
    padding-bottom:50px;
  }
  .prose h2 {
    font-size:25px;
  }
  .prose p,.prose li {
    font-size:14px;
  }
}
@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto;
  }
}