@charset "UTF-8";
:root {
  --ink: #232a26;
  --muted: #626a65;
  --green: #08745e;
  --line: #e3e6e2;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: #fff;
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 32px; }
body { margin: 0; }
a { color: inherit; text-decoration: none; }
button, select { font: inherit; }
button { cursor: pointer; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p, figure, dl, dd { margin: 0; }
p { line-height: 1.85; }
[hidden] { display: none !important; }
a:focus-visible, button:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 2px solid var(--green); outline-offset: 5px;
}
.wrap { width: min(1060px, calc(100% - 80px)); 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 { position: fixed; top: -100px; left: 20px; padding: 12px; background: var(--ink); color: #fff; z-index: 5; }
.skip:focus { top: 12px; }
.header { border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; gap: 36px; height: 80px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 16px; font-weight: 600; white-space: nowrap; }
.brand img { width: 30px; height: 30px; border-radius: 7px; }
.nav > nav { margin-inline-start: auto; display: flex; gap: 28px; font-size: 13px; }
.nav a:hover, .footer a:hover { color: var(--green); }
.language { min-width: 0; }
.language select { max-width: 190px; text-overflow: ellipsis; border: 0; background: transparent; color: var(--muted); font-size: 13px; padding: 10px 0; cursor: pointer; }
.hero { display: grid; grid-template-columns: minmax(0, 1fr) 350px; gap: 90px; align-items: center; padding-block: 62px 66px; }
.platform { font-size: 12px; color: var(--muted); }
.hero h1 { font: 600 62px/1.25 Georgia, "Songti SC", "Songti TC", serif; letter-spacing: -1.5px; margin-top: 24px; }
.subtitle { font-size: 23px; line-height: 1.65; margin-top: 22px; font-weight: 500; }
.intro { font-size: 16px; color: var(--muted); max-width: 430px; margin: 19px 0 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; background: var(--green); color: #fff; border-radius: 7px; padding: 12px 20px; font-size: 14px; font-weight: 500; }
.button:hover { background: #065f4d; }
.availability { font-size: 12px; color: var(--muted); margin-top: 15px; }
.hero-art { display: flex; flex-direction: column; align-items: center; gap: 19px; }
.hero-art figcaption { font-size: 10px; color: var(--muted); text-align: center; }
.phone { position: relative; width: 224px; border-radius: 37px; padding: 7px; background: linear-gradient(100deg,#9b9e9b,#333733 10%,#626662 90%,#b0b3ae); box-shadow: 0 18px 28px -20px #202a2645, 0 0 0 1px #454b45; flex-shrink: 0; }
.phone:after { content: ''; position: absolute; inset: 3px; border: 1px solid #ffffff60; border-radius: 34px; pointer-events: none; }
.screen { border: 2px solid #171c19; border-radius: 30px; overflow: hidden; position: relative; background: #f2f5f4; line-height: 0; }
.screen img { width: 100%; height: auto; }
.speaker { position: absolute; top: 9px; left: 50%; transform: translateX(-50%); width: 27%; height: 14px; border-radius: 20px; background: #141914; }
.speaker:after { content: ''; position: absolute; right: 7px; top: 4px; width: 5px; height: 5px; border-radius: 50%; background: #24312e; }
.side-key { position: absolute; background: #727b70; width: 3px; left: -3px; height: 32px; top: 82px; border-radius: 2px; }
.key-two { top: 125px; height: 47px; }
.hero-phone { width: 246px; }
.features { border-top: 1px solid var(--line); padding-top: 44px; }
h2 { font-size: 25px; line-height: 1.5; font-weight: 550; letter-spacing: -.5px; }
.feature-tabs { display: none; gap: 28px; margin-top: 25px; border-bottom: 1px solid var(--line); }
.feature-tabs.ready { display: flex; }
.feature-tabs button { position: relative; border: 0; background: none; padding: 12px 2px 15px; color: var(--muted); font-size: 15px; }
.feature-tabs button[aria-selected="true"] { color: var(--green); }
.feature-tabs button[aria-selected="true"]:after { content: ''; position: absolute; height: 2px; background: var(--green); bottom: -1px; left: 0; right: 0; }
.feature-panel { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 80px; align-items: center; padding-block: 36px 44px; }
.feature-copy { max-width: 390px; }
.feature-copy h3 { font-size: 28px; line-height: 1.5; font-weight: 550; letter-spacing: -.6px; }
.feature-copy p { font-size: 16px; color: var(--muted); margin-top: 18px; }
.feature-copy ul { padding-inline-start: 19px; margin: 23px 0 0; color: var(--muted); font-size: 13px; line-height: 2.3; }
.feature-device { background: transparent; display: flex; justify-content: center; padding: 32px 24px; }
.feature-device .phone { width: 204px; }
.feature-device .speaker { height: 12px; top: 8px; }
.details { display: grid; grid-template-columns: 1fr 1.8fr; gap: 70px; border-top: 1px solid var(--line); padding-block: 47px; }
.details h2 { font-size: 22px; }
.details dl > div { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 25px; padding: 20px 0; border-bottom: 1px solid var(--line); font-size: 14px; line-height: 1.8; }
.details dl > div:first-child { padding-top: 4px; }
.details dl > div:last-child { border-bottom: 0; padding-bottom: 0; }
.details dt { font-weight: 500; }
.details dd { color: var(--muted); }
.privacy-note { display: grid; grid-template-columns: 1fr 1.8fr; gap: 70px; border-top: 1px solid var(--line); padding-block: 40px 64px; }
.privacy-note h2 { font-size: 22px; }
.privacy-note p { color: var(--muted); font-size: 14px; }
.privacy-note a { display: inline-block; margin-top: 14px; color: var(--green); border-bottom: 1px solid #9cbdb2; padding-bottom: 3px; font-size: 13px; }
.footer { display: flex; align-items: center; gap: 25px; padding-block: 28px; border-top: 1px solid var(--line); }
.footer .brand { font-size: 13px; }
.footer .brand img { width: 24px; height: 24px; border-radius: 6px; }
.footer p { color: var(--muted); font-size: 11px; margin-top: 8px; }
.footer nav { margin-inline-start: auto; display: flex; flex-wrap: wrap; gap: 14px 22px; font-size: 12px; }
.footer small { color: var(--muted); font-size: 10px; }
.document { max-width: 860px; padding-block: 35px 65px; }
.back { font-size: 13px; color: var(--muted); display: inline-block; margin-bottom: 34px; }
.document-head { border-bottom: 1px solid var(--line); padding-bottom: 25px; }
.document-head h1 { font-size: 36px; line-height: 1.4; font-weight: 550; letter-spacing: -1px; }
.document-head > p { font-size: 16px; color: var(--muted); margin-top: 16px; max-width: 700px; }
.prose { max-width: 740px; padding-top: 25px; }
.prose h2 { font-size: 21px; font-weight: 550; margin: 32px 0 13px; scroll-margin-top: 25px; }
.prose p { font-size: 15px; line-height: 1.95; color: #4b554e; margin: 15px 0; overflow-wrap: anywhere; }
.prose a:not(.button) { color: var(--green); text-decoration: underline; text-underline-offset: 4px; }
.prose .date { font-size: 12px; color: var(--muted); margin-top: 0; }
.prose .small { font-size: 12px; color: var(--muted); }
.toc { border-block: 1px solid var(--line); padding: 20px 0; margin-block: 26px 30px; font-size: 13px; }
.toc strong { font-weight: 550; }
.toc ol { list-style: none; padding: 0; margin: 13px 0 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 20px; }
.prose .toc a { text-decoration: none; }
.contact { margin-bottom: 38px; }
.prose .contact h2 { margin-top: 0; }
.email-address { display: block; margin-top: 14px; font-size: 14px; overflow-wrap: anywhere; }
.faq details { border-bottom: 1px solid var(--line); padding: 20px 0; }
.faq summary { cursor: pointer; font-size: 15px; line-height: 1.8; font-weight: 500; }
.faq details p { margin: 15px 0 0; }
.site-notice { border-top: 1px solid var(--line); margin-top: 40px; }
.site-notice p { font-size: 13px; }
.noscript-languages { display: flex; flex-wrap: wrap; justify-content: center; gap: 25px; padding: 20px; font-size: 14px; }
.section-title { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; }
.section-title > a { font-size: 13px; color: var(--green); text-decoration: underline; text-underline-offset: 4px; }
.catalog { padding-block: 35px 60px; }
.catalog-version { color: var(--muted); font-size: 12px !important; margin: 0 0 9px !important; font-variant-numeric: tabular-nums; }
.catalog-layout { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 65px; padding-top: 30px; align-items: start; }
.catalog-index { position: sticky; top: 30px; }
.catalog-index nav { display: flex; flex-direction: column; gap: 17px; }
.catalog-index a { color: var(--muted); font-size: 13px; line-height: 1.7; }
.catalog-index a:hover { color: var(--green); }
.catalog-search { margin-bottom: 27px; }
.catalog-search label { display: block; margin-bottom: 10px; font-size: 13px; }
.catalog-search input { width: 100%; min-height: 44px; padding: 11px 13px; border: 1px solid #c9cfca; border-radius: 5px; background: #fff; color: var(--ink); font: inherit; font-size: 14px; }
.catalog-search input:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
#search-status { margin-top: 9px; color: var(--muted); font-size: 12px; }
.catalog-group { margin-bottom: 35px; scroll-margin-top: 28px; }
.catalog-group h2 { font-size: 23px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.catalog-item { padding: 19px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 28px; }
.catalog-item:last-child { border-bottom: 0; }
.catalog-item h3 { font-size: 16px; font-weight: 550; line-height: 1.65; }
.catalog-item p { margin-top: 7px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.catalog-empty { color: var(--muted); font-size: 14px; padding-block: 20px; }
@media (max-width: 1000px) {
  .hero { grid-template-columns: minmax(0,1fr) 280px; gap: 35px; }
  .hero h1 { font-size: 51px; }
  .hero-phone { width: 226px; }
  .subtitle { font-size: 21px; }
  .feature-panel { gap: 45px; }
  .catalog-layout { grid-template-columns: 155px minmax(0,1fr); gap: 35px; }
  .details, .privacy-note { grid-template-columns: 1fr 1.9fr; gap: 38px; }
  .footer { flex-wrap: wrap; }
  .footer small { width: 100%; }
}
@media (max-width: 700px) {
  .wrap { width: calc(100% - 40px); }
  .nav { height: 68px; gap: 20px; }
  .brand { font-size: 15px; }
  .brand img { width: 27px; height: 27px; }
  .nav > nav { font-size: 12px; gap: 18px; }
  .language select { max-width: 93px; font-size: 12px; }
  .hero { grid-template-columns: minmax(0,1fr); gap: 32px; padding-block: 38px 35px; }
  .hero h1 { font-size: 47px; margin-top: 18px; }
  .subtitle { font-size: 21px; margin-top: 17px; }
  .intro { font-size: 15px; max-width: 450px; margin-top: 14px; margin-bottom: 23px; }
  .hero-art { gap: 16px; }
  .hero-phone { width: 216px; }
  .features { padding-top: 30px; }
  h2 { font-size: 23px; }
  .feature-tabs { margin-top: 14px; gap: 28px; }
  .feature-tabs button { font-size: 14px; }
  .feature-panel { grid-template-columns: minmax(0,1fr); gap: 23px; padding-block: 27px 32px; }
  .feature-copy { max-width: 480px; }
  .feature-copy h3 { font-size: 23px; }
  .feature-copy p { font-size: 14px; margin-top: 12px; }
  .feature-copy ul { margin-top: 14px; font-size: 12px; line-height: 2; }
  .feature-device { padding: 27px 15px; }
  .feature-device .phone { width: 193px; }
  .details { grid-template-columns: minmax(0,1fr); gap: 20px; padding-block: 30px; }
  .details h2, .privacy-note h2 { font-size: 21px; }
  .details dl > div { grid-template-columns: 83px minmax(0,1fr); gap: 18px; font-size: 13px; padding-block: 17px; }
  .privacy-note { grid-template-columns: minmax(0,1fr); gap: 15px; padding-block: 30px 40px; }
  .privacy-note p { font-size: 13px; }
  .footer { gap: 23px; padding-block: 25px; }
  .footer nav { width: 100%; margin: 0; gap: 20px; }
  .footer small { width: auto; }
  .document { padding-block: 27px 45px; }
  .back { margin-bottom: 25px; }
  .document-head h1 { font-size: 31px; }
  .document-head > p { font-size: 15px; margin-top: 13px; }
  .prose h2 { font-size: 20px; }
  .prose p { font-size: 14px; }
  .toc ol { grid-template-columns: minmax(0,1fr); gap: 11px; }
  .catalog { padding-block: 27px 40px; }
  .catalog-layout { grid-template-columns: minmax(0,1fr); gap: 25px; padding-top: 22px; }
  .catalog-index { position: static; }
  .catalog-index nav { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; padding-bottom: 23px; border-bottom: 1px solid var(--line); }
  .catalog-index a { font-size: 12px; }
  .catalog-group h2 { font-size: 22px; }
  .catalog-item p { font-size: 13px; }
}
@media (max-width: 480px) {
  .nav > nav { display: none; }
  .nav .language { margin-inline-start: auto; }
  .nav > nav { margin-inline-start: auto; }
  .nav .brand, .language { flex-shrink: 0; }
}
@media (max-width: 350px) {
  .hero h1 { font-size: 37px; }
  .nav { gap: 12px; }
  .brand { gap: 7px; font-size: 14px; }
  .language select { max-width: 83px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* Preserve natural reading order and original phone hardware in RTL pages. */
[dir="rtl"] .hero h1 { letter-spacing: 0; }
[dir="rtl"] .email-address { direction: ltr; text-align: right; }
[dir="rtl"] a[href^="mailto:"] { unicode-bidi: isolate; }
[dir="rtl"] .catalog-version { direction: ltr; text-align: right; }
.hero-copy, .feature-copy, .document-head, .catalog-body, .footer > div { min-width: 0; }
.hero h1, .document-head h1, .feature-copy h3, .catalog-item h3 { overflow-wrap: anywhere; }