:root {
  color-scheme: dark;
  --bg: #080d16;
  --ink: #f4f1e9;
  --muted: #a9b5c4;
  --gold: #e8ba70;
  --line: #2c3745;
  --surface: #111a25;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  background: var(--bg);
  color: var(--ink);
  scroll-behavior: smooth;
}
* { box-sizing: border-box; }
body { margin: 0; }
h1, h2, h3, h4, p { margin: 0; word-break: keep-all; overflow-wrap: break-word; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 2px solid var(--gold); outline-offset: 5px; }
[hidden] { display: none !important; }
.sr-only, .skip:not(:focus) { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip:focus { position: fixed; top: 12px; left: 12px; z-index: 9; padding: 12px; color: var(--bg); background: var(--gold); }
.wrap { width: min(1160px, calc(100% - 100px)); margin: 0 auto; }
.opening { background: #080e18 url("orbital-station.jpg") no-repeat center 48% / cover; border-bottom: 1px solid var(--line); }
header, nav, .brand, .actions, .platform, .product-name, .sample-heading, .coffee, .footer-brand { display: flex; align-items: center; }
header { min-height: 81px; justify-content: space-between; gap: 24px; border-bottom: 1px solid #b6c5d82e; }
.brand { gap: 10px; font-size: 23px; font-weight: 750; letter-spacing: -.06em; }
nav { gap: 29px; font-size: 14px; font-weight: 550; }
nav a { padding: 9px 0; }
nav a:hover, footer a:hover { color: var(--gold); }
nav .support-nav { border: 1px solid #a88c60; padding: 6px 14px; border-radius: 5px; }
.hero { display: flex; align-items: center; min-height: clamp(475px, 37vw, 580px); padding-block: 52px 67px; }
.product-name, .platform { color: #d5bf9d; font-size: 13px; gap: 10px; }
.product-name { font-weight: 650; }
h1 { margin-top: 18px; font-size: clamp(48px, 4.65vw, 72px); font-weight: 770; line-height: 1.14; letter-spacing: -.072em; }
h1 em { font-style: normal; color: var(--gold); }
.hero-copy > p { margin-top: 19px; color: #cbd3df; font-size: clamp(16px, 1.3vw, 19px); line-height: 1.72; letter-spacing: -.022em; }
.actions { margin: 26px 0 18px; gap: 12px; flex-wrap: wrap; }
.primary, .unavailable, .coffee { padding: 12px 19px; border-radius: 6px; font-size: 15px; line-height: 1.3; font-weight: 650; }
.primary, .coffee { gap: 18px; background: var(--gold); color: #17202a; }
.primary { display: inline-flex; align-items: center; }
.primary:hover, .coffee:hover { background: #f5ce8c; }
.unavailable { color: #a5b0bf; background: #101823e8; border: 1px solid #526070; cursor: not-allowed; }
.platform { gap: 9px; font-size: 12px; color: #b4becb; }
.platform i { width: 3px; height: 3px; border-radius: 50%; background: currentColor; }
.features, .faq { padding-block: 74px; }
.section-intro, .support { display: flex; justify-content: space-between; align-items: end; gap: 30px; }
.label { margin-bottom: 9px; color: var(--gold); font-size: 13px; font-weight: 650; }
h2 { font-size: clamp(31px, 3.1vw, 46px); line-height: 1.23; font-weight: 740; letter-spacing: -.064em; }
.section-intro > p, .support p:not(.label) { color: var(--muted); line-height: 1.68; font-size: 15px; }
.feature-layout { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(0, 1fr); align-items: start; gap: clamp(42px, 6.3vw, 100px); margin-top: 36px; }
.feature-list { border-top: 1px solid var(--line); }
.feature-list article { display: flex; gap: 16px; align-items: flex-start; padding: 18px 0; border-bottom: 1px solid var(--line); }
.feature-list h3 { font-size: 19px; line-height: 1.38; letter-spacing: -.04em; }
.feature-list p { color: var(--muted); margin-top: 4px; font-size: 14px; line-height: 1.7; }
.symbol { flex: 0 0 29px; height: 29px; display: grid; place-items: center; border: 1px solid #61533d; border-radius: 5px; font-size: 18px; line-height: 1; color: var(--gold); }
.sample { background: var(--surface); border: 1px solid #344151; border-radius: 12px; overflow: hidden; box-shadow: 0 15px 40px #0003; }
.sample { position: sticky; top: 28px; }
.sample-heading { gap: 8px; padding: 12px 18px; border-bottom: 1px solid var(--line); background: #0e1620; font-size: 13px; font-weight: 650; }
.sample-state { margin-left: auto; color: var(--muted); font-size: 12px; font-weight: 450; }
.sample-body { padding: clamp(18px, 2.1vw, 30px); }
.sample-body > h3 { font-size: 25px; letter-spacing: -.05em; }
.sample-caption { margin-top: 5px; color: var(--muted); font-size: 13px; }
.demo-switch { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-top: 23px; }
.demo-switch button { border: 0; border-bottom: 2px solid transparent; background: transparent; color: var(--muted); cursor: pointer; font-size: 14px; padding: 7px 13px 9px; }
.demo-switch button[aria-pressed="true"] { border-color: var(--gold); color: var(--gold); font-weight: 700; }
.demo-panel { min-height: 232px; padding-top: 21px; }
.demo-panel h4 { font-size: 16px; margin-bottom: 13px; }
table { border-collapse: collapse; width: 100%; }
th, td { padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 14px; text-align: right; font-variant-numeric: tabular-nums; }
th:first-child { text-align: left; }
thead th { font-size: 12px; font-weight: 500; color: var(--muted); }
tbody th { font-weight: 550; }
tbody td:last-child { color: var(--gold); }
.memo-entry, .chat-list li { padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.memo-entry p, .demo-meta, .chat-list span { margin-top: 6px; color: var(--muted); line-height: 1.55; }
.demo-meta { font-size: 12px; }
.chat-list { margin: 0; padding: 0; list-style: none; }
.chat-list b { color: var(--gold); font-size: 12px; margin-right: 8px; }
.chat-list span { display: block; }
.faq { background: #0d141e; border-block: 1px solid var(--line); }
.faq-layout { display: grid; grid-template-columns: 1fr 1.8fr; gap: 36px; }
details { border-top: 1px solid var(--line); }
details:last-child { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; padding: 16px 0; display: flex; align-items: center; justify-content: space-between; gap: 16px; list-style: none; font-size: 16px; font-weight: 600; line-height: 1.5; word-break: keep-all; }
summary::-webkit-details-marker { display: none; }
summary::after { content: ''; width: 8px; height: 8px; flex: none; border: solid var(--gold); border-width: 0 1.5px 1.5px 0; transform: rotate(45deg); margin-right: 4px; }
details[open] summary::after { transform: rotate(225deg); }
details p { padding: 0 22px 19px 0; font-size: 15px; line-height: 1.8; color: var(--muted); }
.support { align-items: center; padding-block: 70px; }
.support p:not(.label) { margin-top: 13px; }
.coffee { white-space: nowrap; }
footer { border-top: 1px solid var(--line); color: var(--muted); }
footer .wrap { display: flex; align-items: center; gap: 22px; padding-block: 22px; font-size: 12px; }
.footer-brand { margin-right: auto; gap: 7px; color: var(--ink); font-size: 14px; font-weight: 600; }
@media (max-width: 850px) {
  .wrap { width: calc(100% - 64px); }
  .hero { min-height: 430px; }
  .feature-layout { gap: 32px; grid-template-columns: 1fr 1fr; }
  .section-intro { align-items: flex-start; flex-direction: column; gap: 12px; }
  .section-intro .desktop-break { display: none; }
}
@media (max-width: 680px) {
  .wrap { width: calc(100% - 40px); }
  header { min-height: 64px; gap: 12px; }
  .brand { gap: 6px; font-size: 20px; }
  .brand img { width: 28px; height: 28px; }
  nav { gap: 13px; font-size: 12px; }
  nav .support-nav { padding: 6px 9px; }
  .opening { background-position: 57% center; background-image: linear-gradient(90deg, #080e18f2, #080e18b3 54%, #080e1866), url("orbital-station.jpg"); }
  .hero { min-height: 410px; padding-block: 54px; }
  h1 { font-size: clamp(35px, 8.8vw, 53px); }
  .hero-copy > p { margin-top: 15px; font-size: 16px; }
  .actions { margin-top: 23px; }
  .features, .faq { padding-block: 47px; }
  .feature-layout, .faq-layout { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .feature-layout { margin-top: 24px; }
  .sample { grid-row: 1; position: static; }
  .section-intro > p, .support p:not(.label) { font-size: 14px; }
  .sample-body { padding: 17px; }
  .feature-list article { padding: 15px 0; }
  .support { padding-block: 44px; flex-direction: column; align-items: flex-start; gap: 20px; }
  footer .wrap { gap: 12px; flex-wrap: wrap; }
}
@media (max-width: 370px) {
  nav { gap: 8px; }
  .desktop-break { display: none; }
  footer .wrap { flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
}

header > nav:first-of-type { margin-left: auto; }
.languages { gap: 12px; font-size: 13px; }
.languages a { white-space: nowrap; }
.languages a[aria-current="page"] { color: var(--gold); text-decoration: underline; text-underline-offset: 4px; }
.section-intro > p { max-width: 62ch; }
:lang(zh) :is(h1, h2, h3, h4, p, summary) { word-break: normal; }
@media (max-width: 760px) {
  header { flex-wrap: wrap; row-gap: 0; padding-block: 8px; }
  .languages { width: 100%; justify-content: flex-end; }
  .languages a { padding-block: 4px; }
}

.download{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;background:#d3ef83;color:#101711;padding:14px 20px;border-radius:8px;font-weight:700}.download:hover{background:#e5ffae}.release-note{font-size:13px;line-height:1.6;color:#a9b6ca;max-width:620px}