/* Resonance: selected visual direction, with production enhancements below. */
:root {
  color-scheme:dark;
  --bg:#0a0d0e;
  --panel:#101517;
  --line:rgba(208,236,240,.13);
  --text:#f2f7f6;
  --muted:#8b9a9e;
  --cyan:#a7f1ff;
  --mint:#ccfff1;
  --font:'Avenir Next','PingFang SC','Microsoft YaHei',sans-serif;
  --eng:'Avenir Next','Trebuchet MS',sans-serif
}
* {
  box-sizing:border-box
}
html {
  scroll-behavior:smooth;
  scroll-padding-top:90px
}
body {
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:14px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased
}
body:before {
  content:'';
  position:fixed;
  inset:0;
  z-index:10;
  pointer-events:none;
  opacity:.025;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.93' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' opacity='.8' filter='url(%23n)'/%3E%3C/svg%3E")
}
a {
  color:inherit;
  text-decoration:none
}
button {
  font:inherit;
  cursor:pointer
}
button,a {
  -webkit-tap-highlight-color:transparent
}
button:focus-visible,a:focus-visible,summary:focus-visible {
  outline:2px solid var(--cyan);
  outline-offset:6px
}
button:disabled {
  cursor:default
}
button svg,a svg {
  flex-shrink:0
}
::selection {
  background:#a7f1ff;
  color:#0a0d0e
}
.wrap {
  width:min(1272px,calc(100% - 112px));
  margin:auto
}
.nav {
  height:94px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid var(--line)
}
.brand {
  display:inline-flex;
  align-items:center;
  gap:11px;
  font-family:var(--eng);
  font-size:26px;
  font-weight:600;
  letter-spacing:-1.3px
}
.logo {
  width:29px;
  height:29px;
  position:relative;
  display:inline-block
}
.logo i {
  position:absolute;
  width:3px;
  border-radius:5px;
  background:var(--cyan);
  top:50%;
  transform:translateY(-50%)
}
.logo i:nth-child(1) {
  left:2px;
  height:10px
}
.logo i:nth-child(2) {
  left:8px;
  height:21px
}
.logo i:nth-child(3) {
  left:14px;
  height:29px
}
.logo i:nth-child(4) {
  left:20px;
  height:17px
}
.logo i:nth-child(5) {
  left:26px;
  height:7px
}
.navlinks {
  display:flex;
  align-items:center;
  gap:37px;
  color:#acb9bc;
  font-size:12px
}
.navlinks a {
  transition:color .2s
}
.navlinks a:hover {
  color:white
}
.nav-download {
  border:1px solid #47565a;
  border-radius:99px;
  padding:9px 20px;
  color:white!important;
  display:flex;
  align-items:center;
  gap:15px
}
.arrow {
  font-size:17px;
  line-height:1
}
.hero {
  height:710px;
  position:relative;
  display:grid;
  grid-template-columns:48% 52%;
  align-items:center
}
.hero-copy {
  z-index:2;
  padding-bottom:38px;
  pointer-events:none
}
.hero-copy a {
  pointer-events:auto
}
.eyebrow {
  font-family:var(--eng);
  font-size:10px;
  letter-spacing:2px;
  text-transform:uppercase;
  color:var(--muted);
  display:flex;
  align-items:center;
  gap:10px
}
.eyebrow .dot {
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 12px #a7f1ff99
}
.hero h1 {
  font-size:clamp(58px,5.85vw,84px);
  font-weight:500;
  letter-spacing:-5px;
  line-height:1.17;
  margin:28px 0 26px
}
.hero h1 .ice {
  display:block;
  color:#bcefff
}
.hero p {
  color:#9aabb0;
  font-size:14px;
  line-height:1.95;
  letter-spacing:.3px;
  margin:0
}
.hero-actions {
  display:flex;
  gap:25px;
  align-items:center;
  margin-top:34px
}
.button {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:26px;
  border:0;
  border-radius:99px;
  background:var(--cyan);
  color:#101719;
  padding:14px 23px;
  font-size:12px;
  font-weight:600;
  transition:background .2s,transform .2s
}
.button:hover {
  background:#d3f9ff;
  transform:translateY(-2px)
}
.text-link {
  font-size:12px;
  color:#c0ced1;
  display:inline-flex;
  align-items:center;
  gap:10px
}
.text-link:hover {
  color:#fff
}
.play-icon {
  width:23px;
  height:23px;
  display:inline-grid;
  place-items:center;
  border-radius:50%;
  border:1px solid #586568;
  font-size:9px
}
.hero-note {
  display:flex;
  align-items:center;
  gap:9px;
  color:#627277;
  font-size:10px;
  margin-top:19px;
  letter-spacing:.4px
}
.mac-icon {
  width:12px;
  height:14px;
  fill:currentColor
}
.visual {
  position:absolute;
  inset:4px -40px 40px 39%;
  isolation:isolate;
  overflow:hidden
}
.visual:before {
  content:'';
  position:absolute;
  inset:15% 8%;
  background:radial-gradient(ellipse at center,#25404848,transparent 65%);
  filter:blur(35px);
  z-index:-1
}
.visual canvas {
  width:100%;
  height:100%;
  display:block
}
.visual-label {
  position:absolute;
  left:21%;
  top:13%;
  font-family:var(--eng);
  font-size:9px;
  letter-spacing:2px;
  color:#6e939f
}
.visual-label:before {
  content:'+';
  padding-right:12px;
  color:#b1e5ef
}
.visual-coordinate {
  position:absolute;
  right:7%;
  top:41%;
  font-size:9px;
  font-family:var(--eng);
  letter-spacing:1px;
  color:#54747d;
  writing-mode:vertical-rl
}
.orbit-caption {
  position:absolute;
  left:28%;
  bottom:14%;
  display:flex;
  gap:30px;
  align-items:center
}
.orbit-caption .wave {
  display:flex;
  align-items:center;
  gap:3px;
  height:20px
}
.wave i {
  width:2px;
  background:var(--cyan);
  height:5px;
  border-radius:5px;
  animation:wave 1.3s infinite ease-in-out
}
.wave i:nth-child(2n) {
  animation-delay:.3s;
  height:13px
}
.wave i:nth-child(3n) {
  animation-delay:.65s;
  height:20px
}
.orbit-caption p {
  font-family:var(--eng);
  color:#8aaeb7;
  font-size:9px;
  letter-spacing:1.8px;
  line-height:1.6
}
.orbit-caption b {
  display:block;
  font-family:Georgia,'Times New Roman',serif;
  font-style:italic;
  font-size:24px;
  letter-spacing:0;
  font-weight:400;
  color:#d8f8ff
}
.hero-bottom {
  position:absolute;
  bottom:23px;
  left:0;
  right:0;
  display:flex;
  justify-content:space-between;
  align-items:center;
  color:#58686d;
  font-family:var(--eng);
  font-size:9px;
  letter-spacing:1.8px
}
.hero-bottom .down {
  font-size:17px;
  color:#849b9f
}
.steps {
  border-top:1px solid var(--line);
  padding:62px 0 58px
}
.section-top {
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:30px
}
.section-top h2 {
  font-size:31px;
  font-weight:500;
  letter-spacing:-1.3px;
  line-height:1.4;
  margin:9px 0 0
}
.section-top .aside {
  color:var(--muted);
  font-size:12px;
  margin:0 0 3px
}
.step-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:52px;
  margin-top:37px
}
.step {
  position:relative;
  border-top:1px solid #2b383c;
  padding-top:17px
}
.step:before {
  content:'';
  width:4px;
  height:4px;
  border-radius:50%;
  background:#a8ced7;
  position:absolute;
  left:0;
  top:-2px
}
.step-head {
  display:flex;
  align-items:center;
  gap:14px
}
.step-num {
  font-family:Georgia,'Times New Roman',serif;
  font-size:30px;
  line-height:1;
  color:#b6e2eb;
  font-style:italic
}
.step h3 {
  font-size:14px;
  font-weight:500;
  margin:0
}
.step p {
  font-size:12px;
  line-height:1.9;
  color:#7e9298;
  margin:13px 0 0;
  max-width:300px
}
.practice {
  padding:60px 0 64px;
  border-top:1px solid var(--line);
  background:radial-gradient(ellipse at 70% 100%,#15272c44,transparent 58%)
}
.practice .section-top {
  margin-bottom:30px
}
.demo-badge {
  font-size:9px;
  letter-spacing:1px;
  color:#83969c;
  border:1px solid #38484d;
  border-radius:30px;
  padding:4px 9px
}
.desktop {
  border:1px solid #344449;
  border-radius:13px;
  background:#101619;
  box-shadow:0 20px 110px #0006;
  overflow:hidden;
  display:grid;
  grid-template-columns:168px 1fr 294px;
  min-height:388px
}
.app-titlebar {
  grid-column:1/-1;
  height:35px;
  border-bottom:1px solid #28363b;
  background:#141c20;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  font-family:var(--eng);
  font-size:9px;
  color:#62777f;
  letter-spacing:.5px
}
.traffic {
  display:flex;
  gap:5px
}
.traffic i {
  width:6px;
  height:6px;
  background:#536368;
  border-radius:50%
}
.app-sidebar {
  padding:23px 15px;
  background:#0d1316;
  border-right:1px solid #263238
}
.app-brand {
  font-family:var(--eng);
  font-size:16px;
  letter-spacing:-.7px;
  margin-bottom:25px;
  color:#d9e8eb
}
.app-nav {
  padding:8px 10px;
  font-size:10px;
  color:#7c929b;
  margin-bottom:4px;
  border-radius:5px;
  display:flex;
  gap:9px;
  align-items:center
}
.app-nav.active {
  color:#cbf4fb;
  background:#203238
}
.app-sidebar .footnote {
  color:#4c6570;
  font-size:9px;
  margin:98px 10px 0;
  display:flex;
  align-items:center;
  gap:5px
}
.tiny-dot {
  width:4px;
  height:4px;
  display:inline-block;
  border-radius:50%;
  background:#91bcb5
}
.app-main {
  padding:22px 30px 23px;
  position:relative
}
.demo-tabs {
  display:flex;
  gap:7px
}
.demo-tabs button {
  border:1px solid #34444c;
  color:#8da4ad;
  background:transparent;
  border-radius:20px;
  font-size:9px;
  padding:4px 10px;
  transition:.2s
}
.demo-tabs button[aria-pressed=true] {
  background:#b3eaf5;
  color:#162126;
  border-color:#b3eaf5
}
.session-meta {
  display:flex;
  align-items:center;
  gap:7px;
  color:#63808a;
  font-size:9px;
  margin:18px 0
}
.avatar {
  width:21px;
  height:21px;
  border-radius:50%;
  background:#2a444d;
  display:grid;
  place-items:center;
  font-family:Georgia,'Times New Roman',serif;
  color:#c8eff6;
  font-size:15px;
  margin-right:4px
}
.chat-label {
  font-size:8px;
  letter-spacing:1.5px;
  color:#68848e;
  font-family:var(--eng);
  margin:16px 0 8px
}
.chat-bubble {
  font-family:var(--eng);
  font-size:15px;
  color:#cde2e8;
  line-height:1.6;
  max-width:95%;
  min-height:49px
}
.chat-translation {
  font-size:10px;
  color:#718a94;
  margin:5px 0 0
}
.sample-reply {
  margin:20px 0 16px 24px;
  padding:11px 14px;
  border:1px solid #2d464e;
  border-radius:8px 8px 2px 8px;
  background:#172b32;
  color:#b8e3eb;
  font-size:11px;
  font-family:var(--eng);
  display:none
}
.sample-reply.visible {
  display:block;
  animation:fade .4s both
}
.demo-controls {
  display:flex;
  align-items:center;
  gap:11px;
  margin-top:28px
}
.demo-send {
  background:#b1e9f4;
  color:#19282d;
  border:none;
  border-radius:5px;
  padding:9px 12px;
  font-size:10px;
  display:flex;
  gap:14px;
  align-items:center
}
.demo-status {
  font-size:9px;
  color:#637d86
}
.expression-pane {
  padding:23px 24px;
  border-left:1px solid #2a3940;
  background:#121d22
}
.pane-label {
  font-size:8px;
  color:#66848d;
  letter-spacing:1.6px;
  font-family:var(--eng)
}
.expression-pane h3 {
  font-size:13px;
  font-weight:500;
  margin:10px 0 19px;
  color:#adc7cf
}
.expression-card {
  border-top:1px solid #344951;
  padding-top:19px
}
.expression-en {
  font-family:Georgia,'Times New Roman',serif;
  font-size:29px;
  line-height:1.2;
  color:#c3e9f1;
  font-style:italic;
  margin:0 0 12px
}
.expression-cn {
  font-size:10px;
  color:#8ba5ad
}
.expression-desc {
  font-size:10px;
  color:#607f89;
  line-height:1.8;
  margin-top:18px
}
.save-expression {
  display:flex;
  align-items:center;
  justify-content:center;
  width:100%;
  border:1px solid #3c545e;
  color:#9cc8d4;
  background:transparent;
  border-radius:5px;
  font-size:10px;
  padding:8px;
  margin-top:27px;
  transition:.2s
}
.save-expression:hover {
  background:#243b44
}
.demo-disclaimer {
  font-size:9px;
  color:#58717a;
  margin:13px 0 0;
  display:flex;
  justify-content:space-between;
  gap:20px
}
.principles {
  border-top:1px solid var(--line);
  padding:54px 0 57px
}
.principles-inner {
  display:grid;
  grid-template-columns:1.05fr 1fr 1fr;
  gap:66px
}
.principles .quote {
  font-family:Georgia,'Times New Roman',serif;
  font-size:34px;
  font-style:italic;
  line-height:1.25;
  letter-spacing:-.7px;
  color:#ccebf1;
  margin:0
}
.principle-title {
  font-size:13px;
  margin:3px 0 10px;
  font-weight:500;
  display:flex;
  align-items:center;
  gap:9px
}
.principle-title svg {
  color:#86acb8;
  width:15px;
  height:15px
}
.principles p {
  font-size:11px;
  color:#7a929b;
  line-height:1.9;
  margin:0
}
.download {
  position:relative;
  padding:64px 0 65px;
  border-top:1px solid var(--line);
  overflow:hidden;
  background:#10181b
}
.download:before {
  content:'';
  position:absolute;
  width:500px;
  height:500px;
  border:1px solid #46717c33;
  right:-100px;
  top:-160px;
  border-radius:50%;
  box-shadow:0 0 0 50px #46717c0a,0 0 0 100px #46717c09,0 0 0 150px #46717c05;
  pointer-events:none
}
.download-inner {
  position:relative;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:60px
}
.download h2 {
  font-size:43px;
  letter-spacing:-2px;
  font-weight:500;
  line-height:1.4;
  margin:15px 0 13px
}
.download p {
  font-size:12px;
  color:#879fa7;
  margin:0
}
.download .button {
  min-width:218px;
  padding:16px 24px
}
.download-right {
  text-align:center
}
.download-right .platform {
  font-size:9px;
  margin-top:13px;
  color:#5d7a84
}
.download-right .availability {
  font-size:9px;
  margin-top:7px;
  color:#5d7a84
}
.faq {
  padding:50px 0 45px;
  border-top:1px solid var(--line)
}
.faq-inner {
  display:grid;
  grid-template-columns:1fr 2fr;
  gap:80px
}
.faq-title {
  font-size:24px;
  font-weight:500;
  letter-spacing:-.7px;
  margin:9px 0
}
.faq details {
  border-bottom:1px solid #26373d
}
.faq summary {
  list-style:none;
  font-size:12px;
  padding:15px 0;
  cursor:pointer;
  display:flex;
  justify-content:space-between;
  gap:25px;
  color:#a7bec6
}
.faq summary::-webkit-details-marker {
  display:none
}
.faq summary:after {
  content:'+';
  font:18px var(--eng);
  font-weight:400;
  color:#64818c
}
.faq details[open] summary:after {
  content:'−'
}
.faq details p {
  font-size:11px;
  line-height:1.95;
  color:#718d98;
  margin:0 35px 17px 0
}
.footer {
  height:93px;
  border-top:1px solid var(--line);
  display:flex;
  justify-content:space-between;
  align-items:center
}
.footer-brand {
  font-size:20px;
  font-family:var(--eng);
  letter-spacing:-1px;
  color:#bbd0d7
}
.footer p {
  font-size:9px;
  font-family:var(--eng);
  letter-spacing:1px;
  color:#516b76
}
.reveal {
  opacity:1;
  transform:none;
  transition:opacity .8s ease,transform .8s ease
}
.reveal.in {
  opacity:1;
  transform:translateY(0)
}
.hero-copy>* {
  animation:enter .95s both
}
.hero-copy>*:nth-child(2) {
  animation-delay:.08s
}
.hero-copy>*:nth-child(3) {
  animation-delay:.17s
}
.hero-copy>*:nth-child(4) {
  animation-delay:.25s
}
.hero-copy>*:nth-child(5) {
  animation-delay:.3s
}
@keyframes enter {
  from {
    opacity:0;
    transform:translateY(20px)
  }
  to {
    opacity:1;
    transform:translateY(0)
  }
}
@keyframes fade {
  from {
    opacity:0;
    transform:translateY(6px)
  }
  to {
    opacity:1;
    transform:translateY(0)
  }
}
@keyframes wave {
  0%,100% {
    transform:scaleY(.45)
  }
  50% {
    transform:scaleY(1)
  }
}
@media(min-width:1600px) {
  .hero {
    height:760px
  }
  .visual {
    inset:-5px -70px 10px 39%
  }
}
@media(max-width:1100px) {
  .wrap {
    width:calc(100% - 72px)
  }
  .hero h1 {
    font-size:68px
  }
  .hero {
    height:680px
  }
  .visual {
    left:34%;
    right:-36px
  }
  .desktop {
    grid-template-columns:138px 1fr 240px
  }
  .app-main {
    padding:22px
  }
  .expression-pane {
    padding:23px 20px
  }
  .principles-inner {
    gap:35px
  }
  .step-grid {
    gap:30px
  }
  .navlinks {
    gap:26px
  }
}
@media(max-width:800px) {
  .wrap {
    width:calc(100% - 40px)
  }
  .nav {
    height:76px
  }
  .brand {
    font-size:23px
  }
  .navlinks {
    gap:20px
  }
  .navlinks>a:not(.nav-download) {
    display:none
  }
  .nav-download {
    font-size:10px;
    padding:8px 14px
  }
  .hero {
    height:930px;
    display:block;
    padding-top:60px
  }
  .hero-copy {
    padding-bottom:0
  }
  .hero h1 {
    font-size:68px;
    letter-spacing:-3px;
    line-height:1.14;
    margin:24px 0
  }
  .hero p {
    font-size:12px
  }
  .hero-actions {
    margin-top:27px;
    gap:20px
  }
  .hero .button {
    padding:13px 20px;
    font-size:11px
  }
  .hero .text-link {
    font-size:11px
  }
  .hero-note {
    font-size:9px;
    margin-top:17px
  }
  .eyebrow {
    font-size:8px;
    letter-spacing:1.5px
  }
  .visual {
    inset:420px -20px 35px -20px
  }
  .visual-label {
    top:7%;
    left:12%;
    font-size:8px
  }
  .visual-coordinate {
    right:8%;
    font-size:8px
  }
  .orbit-caption {
    left:28%;
    bottom:8%;
    gap:22px
  }
  .orbit-caption b {
    font-size:20px
  }
  .hero-bottom {
    bottom:18px;
    font-size:7px;
    letter-spacing:1.2px
  }
  .hero-bottom>span:nth-child(2) {
    display:none
  }
  .steps {
    padding:44px 0
  }
  .section-top {
    display:block
  }
  .section-top h2 {
    font-size:27px;
    letter-spacing:-1px
  }
  .section-top .aside {
    font-size:11px;
    margin-top:14px
  }
  .step-grid {
    gap:24px;
    margin-top:28px;
    grid-template-columns:1fr
  }
  .step {
    padding-top:14px;
    display:grid;
    grid-template-columns:170px 1fr;
    gap:25px
  }
  .step-head {
    align-items:flex-start;
    padding-top:5px
  }
  .step p {
    margin:0;
    font-size:11px
  }
  .step h3 {
    font-size:12px;
    line-height:2
  }
  .step-num {
    font-size:25px
  }
  .practice {
    padding:43px 0
  }
  .practice .section-top {
    display:flex;
    align-items:flex-end;
    gap:20px
  }
  .practice .section-top h2 {
    font-size:26px
  }
  .demo-badge {
    white-space:nowrap;
    font-size:8px;
    padding:3px 7px
  }
  .desktop {
    grid-template-columns:1fr 210px;
    min-height:360px
  }
  .app-sidebar {
    display:none
  }
  .app-main {
    padding:21px 20px
  }
  .expression-pane {
    padding:23px 18px
  }
  .chat-bubble {
    font-size:13px
  }
  .expression-en {
    font-size:25px
  }
  .demo-disclaimer {
    font-size:8px;
    line-height:1.8;
    display:block
  }
  .demo-disclaimer span {
    display:block
  }
  .principles {
    padding:40px 0
  }
  .principles-inner {
    grid-template-columns:1fr 1fr;
    gap:28px
  }
  .principles .quote {
    grid-column:1/-1;
    font-size:33px
  }
  .principles p {
    font-size:10px
  }
  .principle-title {
    font-size:12px
  }
  .download {
    padding:45px 0
  }
  .download-inner {
    display:block
  }
  .download h2 {
    font-size:36px;
    letter-spacing:-1.6px
  }
  .download p {
    font-size:11px
  }
  .download-right {
    text-align:left;
    margin-top:27px
  }
  .download-right .button {
    padding:13px 20px;
    min-width:200px
  }
  .download-right .platform,.download-right .availability {
    display:inline-block;
    margin-top:15px;
    margin-right:9px;
    font-size:8px
  }
  .download-right .button {
    display:flex;
    width:max-content
  }
  .faq {
    padding:37px 0
  }
  .faq-inner {
    grid-template-columns:1fr;
    gap:8px
  }
  .faq-title {
    font-size:24px
  }
  .faq summary {
    font-size:11px
  }
  .faq details p {
    font-size:10px
  }
  .footer {
    height:85px
  }
  .footer p {
    font-size:7px;
    max-width:160px;
    text-align:right
  }
  .concept-link {
    font-size:7px;
    padding:4px 7px;
    left:8px;
    bottom:7px
  }
}
@media(max-width:480px) {
  .hero {
    height:890px
  }
  .hero h1 {
    font-size:61px
  }
  .visual {
    inset:424px -20px 30px
  }
  .visual-label {
    left:9%;
    font-size:7px
  }
  .visual-coordinate {
    font-size:6px
  }
  .orbit-caption {
    left:26%;
    bottom:10%
  }
  .orbit-caption p {
    font-size:7px
  }
  .hero-note {
    font-size:8px
  }
  .hero-bottom {
    font-size:6px
  }
  .step {
    grid-template-columns:140px 1fr;
    gap:13px
  }
  .step-head {
    gap:10px
  }
  .desktop {
    grid-template-columns:1fr;
    min-height:420px
  }
  .expression-pane {
    border-left:0;
    border-top:1px solid #2a3940;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:8px 18px;
    padding:16px 20px
  }
  .expression-pane h3 {
    margin:5px 0 0
  }
  .expression-card {
    border:0;
    padding:0;
    grid-column:2;
    grid-row:1/4
  }
  .expression-en {
    font-size:23px;
    margin-bottom:6px
  }
  .expression-desc {
    display:none
  }
  .save-expression {
    width:max-content;
    padding:6px 12px;
    margin-top:0;
    font-size:9px
  }
  .app-main {
    padding:18px 20px
  }
  .session-meta {
    margin:12px 0
  }
  .demo-controls {
    margin-top:18px
  }
  .chat-bubble {
    min-height:43px
  }
  .principles-inner {
    gap:27px 20px
  }
  .principles .quote {
    font-size:30px
  }
  .download-right .platform {
    display:block;
    margin-top:12px
  }
  .download-right .availability {
    margin-top:0
  }
  .faq-title {
    font-size:23px
  }
}
@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto
  }
  *,*:before,*:after {
    animation:none!important;
    transition:none!important
  }
  .reveal {
    opacity:1;
    transform:none
  }
}

/* Production navigation, progressive enhancement and download presentation. */
[hidden] { display: none !important; }
body { overflow-wrap: break-word; }
button, a { touch-action: manipulation; }
button:disabled { opacity: .55; cursor: default; }
button:disabled:hover { transform: none; }
.skip-link {
  position: absolute;
  top: -80px;
  left: 20px;
  z-index: 100;
  background: var(--cyan);
  color: #101719;
  border-radius: 6px;
  padding: 12px 20px;
}
.skip-link:focus { top: 14px; }
.header { position: relative; z-index: 20; }
.nav { gap: 24px; }
.navlinks { margin-left: auto; }
.nav-actions { display: flex; align-items: center; gap: 15px; }
.nav-download { min-height: 44px; font-size: 12px; }
.menu-toggle { display: none; }
.hero-copy { pointer-events: auto; }
.hero .hero-note { font-size: 10px; color: #8b9ca1; margin-top: 18px; }
.hero-note span { margin: 0 4px; }
.visual { pointer-events: none; }
.wave-fallback { position: absolute; width: 100%; height: 100%; inset: 0; }
.canvas-ready .wave-fallback { visibility: hidden; }
.wave i { animation-play-state: paused; }
.js-ready[data-motion='playing'] .wave i { animation-play-state: running; }
.motion-toggle {
  position: absolute;
  z-index: 3;
  bottom: 73px;
  right: 24px;
  min-height: 44px;
  padding: 9px 14px;
  border: 1px solid #34494f;
  border-radius: 22px;
  background: #0d151acc;
  color: #a4c7d2;
  font-size: 10px;
  letter-spacing: .4px;
}
.motion-toggle:before { content: 'Ⅱ'; margin-right: 9px; font-size: 11px; }
.motion-toggle[aria-pressed='true']:before { content: '▷'; }
[data-motion='paused'] .wave i,
[data-motion='reduced'] .wave i { animation-play-state: paused; }
.hero-bottom .down { display: grid; place-items: center; width: 44px; height: 44px; }
.js-ready .reveal { opacity: 0; transform: translateY(21px); }
.js-ready .reveal.in { opacity: 1; transform: none; }
.step p { max-width: 325px; }
.demo-tabs { flex-wrap: wrap; gap: 7px; }
.demo-tabs button { min-height: 44px; font-size: 11px; padding: 9px 14px; }
.app-brand span { color: #83b9cc; }
.session-meta { gap: 8px; }
.session-meta .sample-label { margin-left: auto; font-size: 9px; }
.app-main { min-width: 0; }
.chat-bubble { min-height: 58px; }
.sample-reply { display: block; }
.sample-reply:not([hidden]) {
  margin-top: 18px;
  padding: 13px 16px;
  border: 1px solid #3b5d68;
  border-radius: 10px 2px 10px 10px;
  background: #1a3039;
  color: #c8e6ee;
  font-size: 12px;
  animation: fade .3s ease;
}
.demo-send { min-height: 44px; padding: 10px 15px; font-size: 11px; }
.demo-controls { flex-wrap: wrap; }
.demo-status { font-size: 10px; color: #93aab4; }
.save-expression { min-height: 44px; font-size: 10px; }
.save-expression[aria-pressed='true'] { border-color: #8ac6d9; color: #c5eaf4; }
.expression-cn { color: #9cb5bf; }
.demo-disclaimer { margin: 15px 0 0; font-size: 10px; color: #859ca7; line-height: 1.9; }
.demo-disclaimer span { margin-left: 18px; }
.noscript-note { color: #a8c6d0; font-size: 12px; margin-top: 15px; }
.principle-title { font-size: 16px; }
.principle-title > span { color: #a4d2df; font-size: 25px; line-height: 1; }
.principles article p { max-width: 290px; line-height: 2; }
.download { padding: 76px 0 48px; }
.download-inner {
  display: grid;
  grid-template-columns: .9fr 1fr;
  gap: 100px;
  align-items: start;
}
.download h2 { font-size: 48px; line-height: 1.3; letter-spacing: -2.5px; margin: 25px 0 24px; }
.download-copy > p { font-size: 14px; line-height: 2; color: #9db4bd; }
.download-copy .desktop-note { margin-top: 28px; font-size: 11px; color: #738e9a; }
.release-card {
  min-width: 0;
  padding: 29px 30px 25px;
  border: 1px solid #34525e;
  background: linear-gradient(140deg, #172b35, #102029 75%);
  border-radius: 16px;
  box-shadow: 0 24px 80px #0002;
}
.release-header { display: flex; align-items: start; justify-content: space-between; flex-wrap: wrap; gap: 15px; }
.release-eyebrow { font-size: 9px; letter-spacing: 1.8px; color: #8eafbd; margin: 0 0 6px; }
.release-title { font-size: 26px; font-weight: 500; letter-spacing: -.8px; line-height: 1.3; }
.release-status { font-size: 9px; border-radius: 4px; border: 1px solid #486470; padding: 4px 8px; color: #a0c2ce; white-space: nowrap; }
.release-details { margin-top: 16px; color: #90aebc; font-size: 11px; line-height: 1.9; }
.release-facts { display: flex; flex-wrap: wrap; gap: 7px 20px; font-size: 10px; color: #a2c3d0; margin: 20px 0; }
.release-facts > * { margin: 0; }
.release-facts dt { color: #6f96a8; margin-bottom: 3px; font-size: 9px; }
.release-facts dd { margin: 0; }
.release-action {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  width: 100%;
  min-height: 52px;
  padding: 14px 20px;
  border: 1px solid #a7e6f6;
  border-radius: 7px;
  color: #0b1c22;
  background: #b4ebf8;
  font-size: 13px;
  font-weight: 600;
}
.release-action:hover { background: #d5f6ff; }
.release-action:disabled { opacity: 1; color: #90afba; background: #243e49; border-color: #3c5b68; }
.release-pending { font-size: 11px; color: #adc3cd; line-height: 1.85; margin: 13px 0 0; }
.release-platform-note { font-size: 10px; color: #92aebb; line-height: 1.9; margin-top: 13px; }
.release-checksum { margin-top: 22px; padding-top: 18px; border-top: 1px solid #314b57; }
.release-checksum-row { display: flex; align-items: center; justify-content: space-between; gap: 15px; color: #779aa9; font-size: 9px; letter-spacing: 1px; }
.release-copy { min-height: 44px; border: 0; color: #b4d6e3; background: none; padding: 5px 0 5px 15px; font-size: 10px; }
#release-checksum { display: block; overflow-wrap: anywhere; word-break: break-all; font-family: 'SFMono-Regular', Consolas, monospace; font-size: 10px; line-height: 1.9; color: #9fbcc9; margin-top: 2px; }
#copy-status { min-height: 20px; font-size: 10px; color: #acd5e1; margin-top: 7px; }
.release-card p { margin-bottom: 0; }
.install-guide { margin-top: 36px; }
.install-guide details { border: 1px solid #2d4651; border-radius: 8px; padding: 0 22px; }
.install-guide summary { min-height: 62px; display: flex; gap: 15px; align-items: center; font-size: 12px; cursor: pointer; list-style: none; color: #c5dbe4; }
.install-guide summary::-webkit-details-marker { display: none; }
.install-guide summary > span { font-size: 10px; color: #7798a7; margin-left: auto; }
.install-guide summary:after { content: '+'; font-size: 20px; color: #8bb2c3; }
.install-guide details[open] summary:after { content: '−'; }
.install-guide ol { display: grid; grid-template-columns: repeat(3,1fr); gap: 40px; padding: 8px 5px 10px 23px; color: #8eacba; margin-top: 0; }
.install-guide li { font-size: 12px; padding-left: 5px; }
.install-guide li::marker { color: #8eb7c7; }
.install-guide strong { color: #bed6e0; font-weight: 500; }
.install-guide li p { font-size: 11px; line-height: 2; margin-top: 10px; }
.install-guide .upgrade-note { padding-bottom: 22px; margin-top: 5px; font-size: 10px; line-height: 1.9; color: #819eac; }
.faq-inner { grid-template-columns: .85fr 1.6fr; gap: 100px; }
.faq h2 { font-size: 32px; font-weight: 500; letter-spacing: -1px; line-height: 1.45; margin: 15px 0 0; }
.faq summary { min-height: 62px; font-size: 13px; padding: 19px 0; align-items: center; }
.faq details p { font-size: 12px; line-height: 2; color: #91aab6; }
.footer { height: auto; min-height: 130px; gap: 30px; }
.footer p { color: #849da8; letter-spacing: 1.3px; }
.footer-links { display: flex; align-items: center; gap: 23px; font-size: 10px; color: #8ca4af; }
.footer-links a { display: inline-flex; min-height: 44px; align-items: center; }
.footer-links span { color: #698591; }

@media (max-width: 1100px) {
  .download-inner { gap: 50px; }
  .release-card { padding: 25px; }
  .faq-inner { gap: 50px; }
  .footer { flex-wrap: wrap; padding: 25px 0; gap: 12px 30px; }
  .footer-links { margin-left: auto; }
}
@media (max-width: 800px) {
  html { scroll-padding-top: 25px; }
  .nav { gap: 14px; min-height: 76px; height: auto; flex-wrap: wrap; padding: 16px 0; }
  .nav-actions { margin-left: auto; gap: 9px; }
  .nav-download { padding: 8px 14px; gap: 15px; font-size: 11px; }
  .navlinks { order: 3; width: 100%; margin: 0; justify-content: space-between; gap: 10px; }
  .navlinks > a:not(.nav-download) { display: inline-flex; min-height: 44px; align-items: center; font-size: 12px; }
  .js-ready .navlinks { display: none; }
  .js-ready .navlinks.is-open { display: flex; padding-top: 6px; border-top: 1px solid #25383f; margin-top: 10px; }
  .menu-toggle { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; width: 44px; height: 44px; padding: 8px; border: 1px solid #374d57; border-radius: 50%; background: transparent; }
  .menu-toggle span { width: 16px; height: 1px; background: #c1dce5; transition: transform .2s; }
  .menu-toggle[aria-expanded='true'] span:first-child { transform: translateY(3.5px) rotate(45deg); }
  .menu-toggle[aria-expanded='true'] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .hero { height: 960px; padding-top: 52px; }
  .hero h1 { font-size: 70px; }
  .hero .hero-note { font-size: 10px; flex-wrap: wrap; line-height: 1.9; }
  .visual { inset: 440px -20px 48px; }
  .motion-toggle { right: 2px; bottom: 70px; }
  .hero-bottom { bottom: 10px; font-size: 7px; }
  .step { grid-template-columns: 175px 1fr; }
  .step p { max-width: none; font-size: 12px; }
  .step h3 { font-size: 13px; }
  .practice .section-top { flex-wrap: wrap; }
  .demo-tabs button { font-size: 11px; padding: 9px 12px; }
  .desktop { grid-template-columns: 1fr; }
  .expression-pane { border: 0; border-top: 1px solid #30434b; padding: 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; }
  .expression-card { grid-column: 2; grid-row: 1/4; border: 0; padding: 0; }
  .expression-desc { display: block; font-size: 11px; line-height: 1.8; }
  .save-expression { width: fit-content; }
  .demo-disclaimer span { display: block; margin-left: 0; }
  .principles p { font-size: 12px; }
  .principles article p { max-width: none; }
  .principle-title { font-size: 14px; }
  .download { padding: 52px 0 38px; }
  .download-inner { grid-template-columns: 1fr; gap: 28px; }
  .download h2 { font-size: 43px; margin: 21px 0 18px; }
  .download-copy > p { font-size: 13px; }
  .download-copy .desktop-note { margin-top: 18px; font-size: 11px; }
  .release-card { max-width: 100%; padding: 25px; }
  .release-action { min-height: 54px; }
  .release-facts { gap: 12px 25px; }
  .release-title { font-size: 25px; }
  .install-guide { margin-top: 25px; }
  .install-guide ol { grid-template-columns: 1fr; gap: 22px; }
  .install-guide summary > span { display: none; }
  .install-guide summary:after { margin-left: auto; }
  .faq-inner { grid-template-columns: 1fr; gap: 20px; }
  .faq h2 { font-size: 29px; }
  .faq summary { font-size: 13px; line-height: 1.7; }
  .faq details p { margin-right: 15px; font-size: 12px; }
  .footer { display: grid; grid-template-columns: 1fr auto; padding: 28px 0 calc(22px + env(safe-area-inset-bottom)); gap: 15px; }
  .footer p { font-size: 7px; text-align: right; }
  .footer-links { margin: 0; grid-column: 1/-1; justify-content: space-between; gap: 15px; font-size: 10px; flex-wrap: wrap; }
}
@media (max-width: 480px) {
  .hero { height: 910px; padding-top: 43px; }
  .hero h1 { font-size: clamp(54px, 15.6vw, 68px); }
  .hero-actions { gap: 17px; flex-wrap: wrap; }
  .hero .button { font-size: 12px; padding: 14px 18px; gap: 18px; }
  .hero .text-link { font-size: 11px; min-height: 44px; }
  .hero .hero-note { font-size: 9px; }
  .visual { inset: 425px -20px 38px; }
  .visual-label { top: 12%; }
  .orbit-caption { left: 21%; bottom: 12%; }
  .orbit-caption p { font-size: 7px; }
  .motion-toggle { bottom: 50px; font-size: 9px; }
  .step { display: block; }
  .step p { margin: 12px 0 0 40px; }
  .step-head { gap: 15px; }
  .app-main { padding: 20px 18px; }
  .session-meta { font-size: 10px; }
  .session-meta .sample-label { font-size: 8px; }
  .chat-bubble { font-size: 15px; line-height: 1.7; }
  .chat-translation { font-size: 11px; }
  .demo-controls { gap: 10px; }
  .demo-status { display: block; width: 100%; font-size: 10px; }
  .expression-pane { grid-template-columns: 1fr; padding: 20px 18px; gap: 13px; }
  .expression-card { grid-column: auto; grid-row: auto; }
  .expression-en { font-size: 27px; margin: 0 0 5px; }
  .expression-desc { max-width: 280px; font-size: 11px; margin-top: 12px; }
  .expression-cn { font-size: 11px; }
  .save-expression { width: 100%; }
  .principles-inner { grid-template-columns: 1fr; gap: 27px; }
  .principles .quote { font-size: 34px; }
  .principle-title { font-size: 15px; }
  .release-card { padding: 22px 20px; }
  .release-header { gap: 12px; }
  .release-details { font-size: 11px; }
  .release-platform-note { font-size: 10px; }
  .install-guide details { padding: 0 17px; }
}
@media (prefers-reduced-motion: reduce) {
  .js-ready .reveal { opacity: 1; transform: none; }
  .motion-toggle:before { content: '◌'; }
}

/* Keep release metadata aligned as a readable stack at every width. */
.release-header { display: block; }
.release-card .release-eyebrow { font-size: 9px; letter-spacing: 1.8px; color: #91b5c5; }
.release-header .release-title { margin: 9px 0 0; }
.release-header .release-details { margin: 12px 0 0; font-size: 11px; color: #a3bfcb; }
.release-card .release-status { border: 0; padding: 0; margin: 0 0 20px; color: #a8c1cc; font-size: 11px; line-height: 1.9; white-space: normal; }
.release-card .release-pending { margin: 12px 0 0; font-size: 11px; color: #a8c5d0; }
.release-card .release-platform-note { margin-top: 17px; font-size: 10px; line-height: 1.9; }
.release-checksum > p { font-size: 10px; line-height: 1.9; }