@charset "UTF-8";
:root {
  --ink:#141713;
  --ink-soft:#1e241d;
  --lime:#d3fc88;
  --paper:#f7f8f3;
  --white:#fff;
  --muted:#65705d;
  --line:#dce1d5;
  --dark-line:#363d30;
  --radius:20px;
  --sans:Inter,"SF Pro Display","Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --serif:"Songti SC","Noto Serif CJK SC","Source Han Serif SC",SimSun,serif;
}

* {
  box-sizing:border-box;
}

html {
  scroll-behavior:smooth;
  scroll-padding-top:100px;
}

body {
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}

body.dialog-open {
  overflow:hidden;
}

a {
  color:inherit;
  text-decoration:none;
}

button {
  font:inherit;
  cursor:pointer;
}

button,a {
  -webkit-tap-highlight-color:transparent;
}

button {
  color:inherit;
}

button:disabled {
  cursor:default;
}

img {
  max-width:100%;
  display:block;
}

h1,h2,h3,p,figure {
  margin:0;
}

button:focus-visible,a:focus-visible,[tabindex]:focus-visible {
  outline:3px solid #649a29;
  outline-offset:6px;
}

::selection {
  background:var(--lime);
  color:var(--ink);
}

[hidden] {
  display:none!important;
}

.container {
  width:min(1280px,calc(100% - 112px));
  margin-inline:auto;
}

.skip-link {
  position:fixed;
  top:-80px;
  left:20px;
  background:var(--lime);
  padding:14px 20px;
  z-index:100;
}

.skip-link:focus {
  top:15px;
}

.site-header {
  height:92px;
  background:var(--ink);
  color:var(--paper);
  position:sticky;
  top:0;
  z-index:30;
  border-bottom:1px solid var(--dark-line);
}

.header-inner {
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
}

.brand {
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
  font-size:22px;
  font-weight:650;
  letter-spacing:.07em;
}

.brand small {
  display:block;
  font-size:10px;
  letter-spacing:.2em;
  font-weight:450;
  margin-top:5px;
}

.brand-symbol {
  display:flex;
  align-items:center;
  gap:4px;
  height:39px;
  color:var(--lime);
  transform:skewY(-12deg);
}

.brand-symbol i {
  display:block;
  width:5px;
  background:currentColor;
  border-radius:3px;
  height:25px;
}

.brand-symbol i:nth-child(2) {
  height:39px;
}

.brand-symbol i:nth-child(3) {
  height:32px;
}

.brand-symbol i:nth-child(4) {
  height:18px;
}

.desktop-nav {
  display:flex;
  gap:34px;
  font-size:14px;
  color:#c1c5bb;
}

.desktop-nav a {
  padding:12px 0;
  transition:color .2s;
}

.desktop-nav a:hover,.desktop-nav a[aria-current] {
  color:var(--lime);
}

.nav-cta {
  font-size:14px;
  border:1px solid #77806c;
  border-radius:6px;
  padding:11px 19px;
  display:flex;
  gap:24px;
  transition:background .2s,color .2s;
}

.nav-cta:hover {
  background:var(--lime);
  color:var(--ink);
  border-color:var(--lime);
}

.menu-toggle {
  display:none;
}

.hero {
  background:var(--ink);
  color:var(--paper);
  overflow:hidden;
}

.hero-layout {
  display:grid;
  grid-template-columns:1.12fr 1fr;
  gap:42px;
  align-items:center;
  min-height:695px;
  padding-block:56px 64px;
}

.eyebrow {
  font-size:12px;
  letter-spacing:.1em;
  display:flex;
  align-items:center;
  gap:10px;
  color:#c9d0c0;
  font-weight:500;
}

.status-dot {
  width:6px;
  height:6px;
  background:var(--lime);
  display:inline-block;
  border-radius:50%;
  flex-shrink:0;
  box-shadow:0 0 12px #d3fc8830;
}

.hero h1 {
  font-family:var(--serif);
  font-size:clamp(46px,5.05vw,73px);
  font-weight:500;
  line-height:1.33;
  letter-spacing:-.055em;
  margin-top:31px;
  white-space:nowrap;
}

.hero-accent {
  color:var(--lime);
  position:relative;
  display:inline-block;
}

.hero-accent svg {
  position:absolute;
  width:100%;
  height:16px;
  bottom:-6px;
  left:0;
}

.hero-description {
  margin-top:30px;
  line-height:1.95;
  color:#b6bead;
  font-size:16px;
  letter-spacing:.02em;
}

.mobile-break {
  display:none;
}

.hero-actions {
  display:flex;
  align-items:center;
  gap:28px;
  margin-top:34px;
}

.button {
  min-height:54px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:40px;
  padding:16px 25px;
  border-radius:7px;
  border:1px solid transparent;
  font-weight:550;
  font-size:15px;
  transition:background .2s,transform .2s,box-shadow .2s;
}

.button:hover {
  transform:translateY(-3px);
  box-shadow:0 7px 20px #14171315;
}

.button-lime {
  background:var(--lime);
  color:var(--ink);
}

.button-lime:hover {
  background:#e2ffb4;
}

.button span {
  font-size:23px;
  line-height:1;
}

.text-link {
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:14px;
}

.circle-arrow {
  border:1px solid #56604c;
  width:28px;
  height:28px;
  border-radius:50%;
  display:grid;
  place-items:center;
}

.text-link:hover .circle-arrow {
  border-color:var(--lime);
  color:var(--lime);
}

.hero-note {
  display:flex;
  align-items:center;
  gap:14px;
  color:#858f7a;
  font-size:12px;
  margin-top:58px;
}

.mini-wave {
  color:var(--lime);
  font-size:14px;
  letter-spacing:-2px;
}

.hero-visual {
  position:relative;
  height:554px;
  background:radial-gradient(ellipse at 50% 38%,#323f28 0,transparent 65%);
  isolation:isolate;
}

.visual-topline,.visual-bottomline {
  position:absolute;
  left:12px;
  right:12px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:10px;
  color:#879379;
  letter-spacing:.1em;
}

.visual-topline {
  top:0;
}

.visual-topline>span:first-child {
  display:flex;
  align-items:center;
  gap:8px;
}

.visual-bottomline {
  bottom:0;
  letter-spacing:.14em;
}

.sound-orbit {
  position:absolute;
  inset:26px 0 45px;
  display:grid;
  place-items:center;
  overflow:hidden;
  z-index:-1;
}

.sound-orbit span {
  position:absolute;
  width:83%;
  aspect-ratio:1;
  border:1px solid #859c4b25;
  border-radius:50%;
}

.sound-orbit span:nth-child(2) {
  width:67%;
}

.sound-orbit span:nth-child(3) {
  width:50%;
}

.sound-orbit span:nth-child(4) {
  width:110%;
}

.voice-character {
  position:absolute;
  left:49%;
  top:25px;
  transform:translateX(-50%) rotate(-8deg);
  font-family:var(--serif);
  font-size:266px;
  font-weight:600;
  line-height:1.25;
  color:var(--lime);
  text-shadow:0 0 70px #d3fc8811;
}

.phonetic-tag {
  position:absolute;
  top:102px;
  right:12%;
  font-family:Georgia,serif;
  font-size:24px;
  font-style:italic;
  color:#bedc91;
}

.vertical-caption {
  position:absolute;
  right:-10px;
  top:190px;
  writing-mode:vertical-rl;
  font-size:9px;
  letter-spacing:.18em;
  color:#758168;
}

.signal {
  position:absolute;
  top:42%;
  left:0;
  right:0;
  display:flex;
  align-items:center;
  justify-content:center;
  height:90px;
  gap:4px;
  opacity:.45;
}

.signal i {
  width:2px;
  min-width:1px;
  background:var(--lime);
  height:var(--h);
  border-radius:5px;
  transform-origin:center;
  animation:signal 2s ease-in-out 2 alternate;
  animation-delay:var(--delay);
}

@keyframes signal {
  to {
    transform:scaleY(.5);
    opacity:.4;
  }
}

.analysis-card {
  position:absolute;
  left:5%;
  right:6%;
  bottom:40px;
  transform:rotate(-3deg);
  border-radius:13px;
  background:#f1f5e8;
  color:var(--ink);
  padding:24px;
  box-shadow:0 20px 50px #0003;
  transition:transform .4s;
}

.hero-visual:hover .analysis-card {
  transform:rotate(0);
}

.analysis-card-top {
  display:flex;
  align-items:center;
  gap:10px;
}

.analysis-icon {
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  border-radius:50%;
  background:#dce9c9;
  font-size:27px;
}

.analysis-card-top strong {
  font-size:15px;
  font-weight:600;
  display:block;
}

.analysis-card-top div>span {
  font-size:10px;
  color:#828973;
  display:block;
  margin-top:4px;
}

.analysis-done {
  margin-left:auto;
  font-size:10px;
  border:1px solid #cbd4bf;
  padding:5px 8px;
  border-radius:5px;
  color:#617c41;
  white-space:nowrap;
}

.analysis-score {
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:16px 0 20px;
  gap:12px;
}

.score-number {
  font-size:66px;
  line-height:1;
  font-weight:500;
  letter-spacing:-.06em;
}

.score-number small {
  font-size:36px;
}

.score-label {
  display:block;
  font-size:10px;
  color:#7e8576;
  margin-top:7px;
}

.score-message>span {
  font-size:11px;
  color:#747f67;
}

.score-bars {
  height:45px;
  display:flex;
  align-items:flex-end;
  gap:4px;
  margin-top:10px;
}

.score-bars i {
  background:#a4c879;
  width:7px;
  height:65%;
  border-radius:2px;
}

.score-bars i:nth-child(3n) {
  height:85%;
}

.score-bars i:nth-child(4n) {
  height:100%;
}

.score-bars i:nth-child(3n+1) {
  height:40%;
}

.score-bars i:nth-child(n+14) {
  background:#d6dec9;
}

.analysis-bottom {
  border-top:1px solid #d2dbc6;
  padding-top:15px;
  font-size:10px;
  color:#707b63;
  display:flex;
  align-items:center;
  gap:14px;
}

.analysis-bottom i {
  width:3px;
  height:3px;
  background:#b5bea8;
  border-radius:50%;
}

.analysis-bottom>span:last-child {
  margin-left:auto;
  font-size:18px;
}

.hero-footer {
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-block:22px;
  border-top:1px solid var(--dark-line);
  font-size:12px;
  color:#89967d;
}

.hero-footer a {
  display:flex;
  gap:34px;
  align-items:center;
}

.hero-footer a span {
  color:var(--lime);
  font-size:20px;
}

.platform-strip {
  border-bottom:1px solid var(--line);
  background:#eef0e8;
}

.platform-inner {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
  min-height:110px;
}

.platform-inner>p {
  font-size:12px;
  color:#737c69;
}

.platform-inner>div {
  display:flex;
  align-items:center;
  gap:48px;
}

.platform-inner>div>span {
  font-size:16px;
  font-weight:550;
  display:flex;
  align-items:center;
  gap:9px;
}

.platform-inner b {
  font-size:24px;
  font-weight:400;
}

.platform-inner .platform-note {
  font-size:12px;
  font-weight:400;
  color:#737c69;
  gap:22px;
}

.section {
  padding-block:112px;
}

.section-heading {
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:36px;
  margin-bottom:54px;
}

.dark-eyebrow {
  color:#727b66;
}

.section h2 {
  font-size:clamp(34px,3.4vw,48px);
  font-weight:550;
  line-height:1.4;
  letter-spacing:-.055em;
  margin-top:22px;
}

.muted {
  color:#8b9281;
}

.section-intro {
  color:var(--muted);
  font-size:15px;
  line-height:1.95;
  margin-bottom:6px;
}

.start-section {
  padding-block:95px;
  background:var(--lime);
  overflow:hidden;
}

.start-layout {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:40px;
}

.start-section h2 {
  font-size:clamp(44px,5vw,68px);
  font-weight:550;
  line-height:1.3;
  letter-spacing:-.055em;
  margin-top:24px;
}

.start-section h2 span {
  font-family:var(--serif);
  font-weight:500;
  font-style:italic;
}

.start-section p:not(.eyebrow) {
  font-size:15px;
  line-height:1.9;
  color:#56663e;
  margin-block:22px 28px;
}

.button-dark {
  background:var(--ink);
  color:var(--paper);
}

.button-dark:hover {
  background:#30392a;
}

.start-qr {
  padding:27px;
  background:#f8fff0;
  display:flex;
  align-items:center;
  flex-direction:column;
  transform:rotate(5deg);
  border-radius:10px;
  margin-right:8%;
  box-shadow:14px 18px 0 #b9de72;
}

.start-qr img {
  width:180px;
  height:180px;
  object-fit:contain;
  margin-bottom:17px;
}

.start-qr strong {
  font-size:18px;
}

.start-qr>span {
  font-size:12px;
  color:var(--muted);
  margin-top:7px;
}

.site-footer {
  background:var(--ink);
  color:var(--paper);
  padding:48px 0 24px;
}

.footer-top {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:25px;
  padding-bottom:42px;
}

.footer-top p {
  color:#979f8e;
  font-size:14px;
}

.footer-top>a:last-child {
  font-size:12px;
  color:#979f8e;
}

.footer-top>a:last-child span {
  margin-left:20px;
  color:var(--lime);
}

.footer-bottom {
  border-top:1px solid var(--dark-line);
  padding-top:22px;
  display:flex;
  justify-content:space-between;
  gap:20px;
  font-size:11px;
  color:#89937e;
}

.footer-bottom>div {
  display:flex;
  gap:18px;
}

.footer-bottom a:hover {
  color:var(--lime);
}

.experience-dialog {
  border:1px solid var(--line);
  border-radius:20px;
  padding:44px;
  max-width:min(450px,calc(100% - 32px));
  max-height:calc(100dvh - 40px);
  color:var(--ink);
  background:var(--paper);
  text-align:center;
  box-shadow:0 24px 100px #0004;
  overflow:auto;
}

.experience-dialog::backdrop {
  background:#0c100cd4;
  backdrop-filter:blur(9px);
}

.dialog-close {
  position:absolute;
  right:14px;
  top:12px;
  border:0;
  border-radius:50%;
  width:40px;
  height:40px;
  font-size:26px;
  background:transparent;
  color:var(--muted);
}

.dialog-close:hover {
  background:#e6ecdf;
}

.dialog-eyebrow {
  font-size:10px;
  letter-spacing:.17em;
  color:#7b875f;
}

.experience-dialog h2 {
  font-size:30px;
  font-weight:550;
  line-height:1.5;
  margin-top:18px;
  letter-spacing:-.03em;
}

.experience-dialog p {
  color:var(--muted);
  font-size:14px;
  margin-top:14px;
}

.experience-dialog img {
  margin:25px auto 18px;
  width:220px;
  max-width:100%;
  height:auto;
}

.qr-save {
  font-size:14px;
  border-bottom:1px solid #8c9c72;
  padding-bottom:5px;
  display:inline-flex;
  gap:25px;
}

.dialog-hint {
  display:block;
  margin-top:20px;
  color:var(--muted);
  font-size:12px;
  line-height:1.7;
}

.reveal {
  transition:opacity .6s,transform .6s;
}

.reveal.is-pending {
  opacity:0;
  transform:translateY(20px);
}

@media(min-width:1550px) {
  .hero-layout {
    min-height:750px;
  }
  .hero-visual {
    height:590px;
  }
  .voice-character {
    font-size:290px;
  }
  .analysis-card {
    bottom:44px;
  }
}

@media(max-width:1100px) {
  .container {
    width:calc(100% - 64px);
  }
  .desktop-nav {
    gap:24px;
  }
  .hero-layout {
    gap:20px;
    min-height:650px;
  }
  .hero h1 {
    font-size:54px;
  }
  .hero-visual {
    height:515px;
  }
  .hero-actions {
    gap:18px;
  }
  .button {
    gap:25px;
    padding-inline:20px;
  }
  .hero-description {
    font-size:14px;
  }
  .hero-note {
    font-size:10px;
  }
  .analysis-card {
    padding:19px;
    left:3%;
    right:4%;
  }
  .analysis-score {
    padding-block:17px;
  }
  .score-number {
    font-size:55px;
  }
  .score-bars {
    gap:3px;
  }
  .score-bars i {
    width:5px;
  }
  .voice-character {
    font-size:240px;
  }
  .platform-inner>div {
    gap:28px;
  }
  .platform-inner .platform-note {
    display:none;
  }
  .footer-bottom>div {
    flex-wrap:wrap;
    justify-content:flex-end;
    gap:8px 18px;
  }
}

@media(max-width:800px) {
  html {
    scroll-padding-top:85px;
  }
  .container {
    width:calc(100% - 40px);
  }
  .site-header {
    height:78px;
  }
  .header-inner {
    gap:20px;
  }
  .brand {
    font-size:19px;
  }
  .brand small {
    font-size:9px;
  }
  .brand-symbol {
    transform:scale(.9) skewY(-12deg);
  }
  .desktop-nav {
    display:none;
  }
  .nav-cta {
    margin-left:auto;
    padding:9px 12px;
    font-size:12px;
    gap:12px;
  }
  .menu-toggle {
    display:flex;
    width:32px;
    height:40px;
    flex-direction:column;
    justify-content:center;
    gap:6px;
    background:transparent;
    border:0;
    padding:4px;
  }
  .menu-toggle span {
    display:block;
    background:var(--paper);
    height:1px;
    width:24px;
    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);
  }
  .mobile-nav {
    position:absolute;
    top:77px;
    left:0;
    right:0;
    background:var(--ink);
    padding:10px 25px 20px;
    border-bottom:1px solid var(--dark-line);
  }
  .mobile-nav a {
    display:block;
    padding:14px 0;
    border-bottom:1px solid var(--dark-line);
    font-size:15px;
  }
  .hero-layout {
    grid-template-columns:1fr;
    padding-top:55px;
    padding-bottom:36px;
    gap:42px;
  }
  .hero h1 {
    font-size:clamp(46px,8.8vw,70px);
    margin-top:27px;
  }
  .hero-copy {
    max-width:630px;
  }
  .hero-description {
    font-size:15px;
    margin-top:24px;
  }
  .hero-actions {
    margin-top:26px;
    gap:26px;
  }
  .hero-note {
    margin-top:30px;
    font-size:11px;
  }
  .hero-visual {
    width:min(520px,100%);
    height:525px;
    margin-inline:auto;
  }
  .voice-character {
    font-size:260px;
    top:25px;
  }
  .analysis-card {
    left:5%;
    right:6%;
    padding:24px;
  }
  .score-number {
    font-size:66px;
  }
  .score-bars {
    gap:4px;
  }
  .score-bars i {
    width:7px;
  }
  .analysis-card-top strong {
    font-size:15px;
  }
  .platform-inner {
    padding-block:24px;
    min-height:auto;
    flex-direction:column;
    align-items:flex-start;
    gap:20px;
  }
  .platform-inner>div {
    justify-content:space-between;
    width:100%;
    gap:14px;
  }
  .platform-inner>div>span {
    font-size:14px;
  }
  .platform-inner b {
    font-size:21px;
  }
  .section {
    padding-block:76px;
  }
  .section-heading {
    flex-direction:column;
    align-items:flex-start;
    gap:22px;
    margin-bottom:34px;
  }
  .section h2 {
    font-size:38px;
  }
  .section-intro {
    font-size:14px;
  }
  .start-section {
    padding-block:70px;
  }
  .start-qr {
    margin-right:15px;
    padding:20px;
  }
  .start-qr img {
    width:150px;
    height:150px;
  }
  .start-layout {
    gap:25px;
  }
  .start-section h2 {
    font-size:46px;
  }
  .start-section p:not(.eyebrow) {
    font-size:14px;
  }
  .footer-top {
    flex-wrap:wrap;
  }
  .footer-top p {
    font-size:12px;
  }
  .footer-bottom {
    flex-direction:column;
    font-size:10px;
  }
  .footer-bottom>div {
    justify-content:flex-start;
  }
}

@media(max-width:480px) {
  .hero-layout {
    padding-top:43px;
  }
  .eyebrow {
    font-size:10px;
  }
  .hero h1 {
    font-size:clamp(37px,10.4vw,49px);
  }
  .hero-description {
    font-size:14px;
  }
  .hero-description .mobile-break {
    display:block;
  }
  .hero-actions {
    gap:18px;
  }
  .button {
    font-size:14px;
    min-height:50px;
    padding:13px 18px;
    gap:28px;
  }
  .text-link {
    font-size:12px;
    gap:8px;
  }
  .circle-arrow {
    width:25px;
    height:25px;
  }
  .hero-visual {
    height:460px;
  }
  .voice-character {
    font-size:225px;
  }
  .phonetic-tag {
    top:95px;
    font-size:19px;
  }
  .vertical-caption {
    right:0;
    font-size:8px;
  }
  .analysis-card {
    padding:19px;
    bottom:35px;
  }
  .analysis-card-top {
    gap:8px;
  }
  .analysis-card-top strong {
    font-size:14px;
  }
  .analysis-card-top div>span,.analysis-done {
    font-size:9px;
  }
  .analysis-icon {
    width:30px;
    height:30px;
    font-size:24px;
  }
  .analysis-done {
    padding:4px 6px;
  }
  .analysis-score {
    padding-block:17px;
  }
  .score-number {
    font-size:57px;
  }
  .score-number small {
    font-size:30px;
  }
  .score-bars {
    gap:3px;
  }
  .score-bars i {
    width:5px;
  }
  .analysis-bottom {
    gap:10px;
    font-size:9px;
  }
  .visual-topline,.visual-bottomline {
    font-size:8px;
  }
  .hero-footer {
    font-size:10px;
  }
  .hero-footer a {
    gap:14px;
  }
  .platform-inner>div>span {
    font-size:12px;
    gap:5px;
  }
  .platform-inner b {
    font-size:18px;
  }
  .section {
    padding-block:62px;
  }
  .section h2 {
    font-size:33px;
  }
  .start-layout {
    align-items:flex-start;
    flex-direction:column;
    gap:45px;
  }
  .start-qr {
    align-self:center;
    width:240px;
    margin:0;
  }
  .start-qr img {
    width:160px;
    height:160px;
  }
  .start-section h2 {
    font-size:48px;
  }
  .footer-top {
    gap:22px;
  }
  .footer-top p {
    order:3;
    width:100%;
  }
  .footer-bottom>div {
    flex-direction:column;
    gap:10px;
  }
  .experience-dialog {
    padding:35px 25px;
  }
  .experience-dialog h2 {
    font-size:27px;
  }
}

.learning-workspace {
  display:grid;
  grid-template-columns:.95fr 1.05fr;
  gap:60px;
  align-items:center;
}

.learning-steps {
  display:flex;
  flex-direction:column;
}

.learning-step {
  display:flex;
  align-items:flex-start;
  text-align:left;
  gap:20px;
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
  padding:28px 4px;
  position:relative;
}

.learning-step::before {
  content:"";
  position:absolute;
  left:0;
  top:-1px;
  width:0;
  height:2px;
  background:#5a762f;
  transition:width .3s;
}

.learning-step[aria-selected="true"]::before {
  width:100%;
}

.step-index {
  font-size:12px;
  color:#919985;
  line-height:24px;
}

.step-content {
  flex:1;
}

.step-content strong {
  font-size:20px;
  font-weight:550;
  letter-spacing:-.04em;
  display:block;
  line-height:1.5;
  color:#77806b;
}

.step-content>span {
  display:block;
  font-size:14px;
  line-height:1.8;
  color:#67715d;
  margin-top:10px;
}

.step-arrow {
  font-size:22px;
  color:#a6af9a;
}

.learning-step[aria-selected="true"] .step-content strong {
  color:var(--ink);
}

.learning-step[aria-selected="true"] .step-content>span {
  color:#6e7961;
}

.learning-step[aria-selected="true"] .step-index,.learning-step[aria-selected="true"] .step-arrow {
  color:#4e7128;
}

.learning-step:hover .step-content strong {
  color:var(--ink);
}

.learning-link {
  margin-top:18px;
  font-size:14px;
  color:#626f53;
  display:flex;
  justify-content:space-between;
  padding-right:4px;
}

.learning-link:hover {
  color:var(--ink);
}

.learning-preview {
  border-radius:var(--radius);
  background:#eef1e8;
  border:1px solid #dce2d3;
  padding:14px 25px 28px;
  min-width:0;
  box-shadow:0 12px 28px #46562c05;
}

.preview-top {
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:10px;
  color:#849075;
  height:32px;
  margin-bottom:16px;
  gap:14px;
}

.preview-top>span:first-child {
  display:flex;
  gap:4px;
}

.preview-top i {
  display:block;
  width:5px;
  height:5px;
  border-radius:50%;
  background:#bdc7b1;
}

.learning-panel {
  padding:27px;
  background:#fff;
  border:1px solid #e5e9df;
  border-radius:12px;
  min-height:355px;
}

.panel-kicker {
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:10px;
  color:#89927e;
  gap:15px;
}

.panel-kicker>span:first-child {
  color:#688344;
}

.learning-panel h3 {
  margin-top:27px;
  font-size:23px;
  font-weight:550;
  letter-spacing:-.03em;
}

.lyric-tokens {
  margin-top:26px;
  display:grid;
  grid-template-columns:repeat(8,minmax(0,1fr));
  gap:5px;
}

.lyric-tokens>span {
  text-align:center;
  font-size:17px;
}

.lyric-tokens small {
  display:block;
  font-size:12px;
  color:#81936c;
  margin-top:9px;
  font-family:var(--sans);
}

.listen-wave {
  height:71px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:4px;
  border-bottom:1px solid #edf0e9;
  margin-top:12px;
  overflow:hidden;
}

.listen-wave i {
  display:block;
  background:#bdce9e;
  width:3px;
  flex-shrink:0;
  height:var(--h);
  border-radius:2px;
}

.preview-caption {
  display:flex;
  gap:12px;
  align-items:center;
  margin-top:23px;
}

.round-icon {
  width:35px;
  height:35px;
  background:#edf2e4;
  color:#748c51;
  display:grid;
  place-items:center;
  border-radius:50%;
  font-size:18px;
  flex-shrink:0;
}

.preview-caption strong {
  display:block;
  font-size:12px;
  font-weight:550;
}

.preview-caption p {
  font-size:11px;
  line-height:1.7;
  color:#69735e;
  margin-top:4px;
}

.practice-demo {
  min-height:166px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:25px;
  border-bottom:1px solid #edf0e9;
}

.mic-symbol {
  width:72px;
  height:72px;
  border-radius:50%;
  background:var(--lime);
  display:grid;
  place-items:center;
  box-shadow:0 0 0 10px #eef5e6;
}

.mic-symbol svg {
  width:30px;
  height:30px;
}

.practice-demo strong {
  font-size:17px;
  font-weight:550;
  display:block;
}

.practice-demo div>span {
  font-size:12px;
  color:var(--muted);
  margin-top:10px;
  display:block;
}

.progress-summary {
  display:flex;
  justify-content:space-between;
  gap:14px;
  padding-top:23px;
}

.progress-summary strong {
  font-size:27px;
  font-weight:500;
  letter-spacing:-.06em;
  display:block;
  color:#5b7c32;
}

.progress-summary small {
  font-size:10px;
  margin-left:3px;
  font-weight:400;
  letter-spacing:0;
}

.progress-summary div>span {
  display:block;
  font-size:10px;
  color:#909a81;
  margin-top:5px;
}

.learning-calendar {
  display:grid;
  grid-template-columns:repeat(14,1fr);
  gap:4px;
  margin-top:22px;
}

.learning-calendar i {
  aspect-ratio:1;
  background:#edf1e6;
  border-radius:3px;
}

.learning-calendar i[data-level="1"] {
  background:#d4e3bc;
}

.learning-calendar i[data-level="2"] {
  background:#b0ce88;
}

.learning-calendar i[data-level="3"] {
  background:#86ab58;
}

.feature-notes {
  border-top:1px solid var(--line);
  margin-top:60px;
  padding-top:32px;
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:35px;
}

.feature-notes article {
  display:flex;
  gap:16px;
  align-items:flex-start;
}

.feature-notes article>span {
  font-size:30px;
  line-height:1;
  color:#799254;
}

.feature-notes h3 {
  font-size:17px;
  font-weight:550;
  margin-bottom:10px;
}

.feature-notes p {
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
}

.intelligence {
  background:var(--ink);
  color:var(--paper);
}

.intelligence .section-intro {
  color:#a1ac94;
}

.lime-text {
  color:var(--lime);
}

.intelligence-grid {
  display:grid;
  grid-template-columns:1.3fr 1fr;
  gap:85px;
  align-items:center;
}

.phoneme-console {
  padding:29px;
  background:#1d241b;
  border:1px solid #39442e;
  border-radius:16px;
  min-width:0;
}

.console-header {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
  font-size:13px;
  color:#b3c2a1;
}

.console-header>span:first-child {
  display:flex;
  align-items:center;
  gap:9px;
}

.example-label {
  font-size:10px;
  background:#2b3524;
  padding:6px 9px;
  border-radius:4px;
  color:#9ba68f;
}

.console-title {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:25px;
  margin-block:32px 29px;
}

.console-title>span {
  font-size:22px;
  font-weight:450;
}

.console-title strong {
  font-size:38px;
  font-weight:400;
  color:var(--lime);
  letter-spacing:-.05em;
}

.console-title small {
  font-size:14px;
  margin-left:4px;
}

.comparison-row {
  display:flex;
  align-items:center;
  gap:16px;
  margin-bottom:9px;
}

.comparison-row>span {
  font-size:12px;
  color:#8d9b7f;
  flex-shrink:0;
}

.comparison-row>div {
  display:grid;
  grid-template-columns:repeat(8,minmax(0,1fr));
  gap:5px;
  flex:1;
  min-width:0;
}

.comparison-row>div>span {
  border-radius:5px;
  background:#2d3a24;
  color:#bdd995;
  padding:11px 2px;
  text-align:center;
  font-size:14px;
  font-family:"Segoe UI",sans-serif;
  white-space:nowrap;
}

.comparison-row>div>.needs-work {
  color:#e1b69e;
  background:#44372a;
  border-bottom:2px solid #a97958;
  padding-bottom:9px;
}

.comparison-legend {
  display:flex;
  align-items:center;
  gap:19px;
  color:#8d9b7f;
  font-size:10px;
  margin-top:17px;
}

.comparison-legend>span {
  display:flex;
  align-items:center;
  gap:5px;
}

.comparison-legend i {
  display:block;
  width:5px;
  height:5px;
  border-radius:50%;
  background:#aac887;
}

.comparison-legend>span:nth-child(2) i {
  background:#d1a385;
}

.console-insight {
  border-top:1px solid #37432d;
  margin-top:30px;
  padding-top:22px;
  display:flex;
  align-items:flex-start;
  gap:13px;
}

.console-insight>span {
  font-size:26px;
  color:var(--lime);
}

.console-insight p {
  font-size:14px;
  color:#c4d3b3;
  line-height:1.8;
}

.console-insight p>span {
  font-size:12px;
  color:#94a084;
}

.console-disclaimer {
  font-size:10px;
  color:#7c896d;
  margin-top:20px;
  line-height:1.7;
}

.engine-details article+article {
  margin-top:27px;
  padding-top:24px;
  border-top:1px solid var(--dark-line);
}

.engine-number {
  font-size:10px;
  letter-spacing:.1em;
  color:#a2b28c;
}

.engine-details h3 {
  font-size:21px;
  letter-spacing:-.03em;
  font-weight:500;
  margin-top:12px;
}

.engine-details p {
  font-size:14px;
  color:#97a48a;
  line-height:1.85;
  margin-top:10px;
  max-width:340px;
}

.engine-footer {
  margin-top:60px;
  border-top:1px solid var(--dark-line);
  padding-top:25px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:25px;
  font-size:12px;
  color:#819170;
}

.engine-footer>div {
  display:flex;
  align-items:center;
  gap:25px;
}

.engine-footer>div>span {
  color:#a5b593;
}

.engine-footer b {
  color:#59694b;
  font-weight:400;
}

.song-explorer {
  display:grid;
  grid-template-columns:1.12fr 1fr;
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  background:#fff;
}

.song-list {
  padding:18px 34px;
}

.song-option {
  display:flex;
  align-items:center;
  gap:22px;
  min-height:78px;
  width:100%;
  text-align:left;
  background:transparent;
  border:0;
  border-bottom:1px solid #e6eadd;
  padding:15px 0;
}

.song-option:last-child {
  border-bottom:0;
}

.song-option>span:first-child {
  font-size:12px;
  color:#98a089;
  font-family:var(--sans);
}

.song-option strong {
  font-size:20px;
  font-weight:500;
  letter-spacing:-.03em;
}

.song-subtitle {
  font-size:10px;
  color:#89967b;
  max-width:110px;
  line-height:1.5;
  display:none;
}

.song-arrow {
  margin-left:auto;
  color:#9ea88f;
  font-size:22px;
}

.song-option[aria-selected="true"] strong,.song-option[aria-selected="true"] .song-arrow {
  color:#5d7f2d;
}

.song-option[aria-selected="true"] .song-subtitle {
  display:block;
}

.song-option[aria-selected="true"]>span:first-child {
  color:#65853b;
}

.song-option:hover strong {
  color:#5d7f2d;
}

.song-details {
  background:#dbe7c7;
  display:flex;
  flex-direction:column;
  min-width:0;
}

.song-detail {
  position:relative;
  flex:1;
  min-height:420px;
  overflow:hidden;
  padding:33px;
  isolation:isolate;
}

.song-detail::before,.song-detail::after {
  content:"";
  position:absolute;
  width:370px;
  height:370px;
  border-radius:50%;
  border:1px solid #a4b68c50;
  top:0;
  right:-130px;
  z-index:-1;
}

.song-detail::after {
  width:500px;
  height:500px;
  top:-65px;
  right:-195px;
}

.song-detail-index {
  font-size:10px;
  color:#697d50;
  letter-spacing:.14em;
}

.song-glyph {
  position:absolute;
  right:14px;
  top:22px;
  font-family:var(--serif);
  font-size:240px;
  color:#78914f;
  font-weight:500;
  line-height:1.3;
  transform:rotate(-8deg);
  opacity:.85;
  z-index:-1;
}

.song-detail-copy {
  position:absolute;
  bottom:35px;
  left:33px;
  right:33px;
}

.song-detail-copy>span {
  font-size:10px;
  color:#6a7a56;
  letter-spacing:.15em;
}

.song-detail h3 {
  font-family:var(--serif);
  font-size:36px;
  font-weight:500;
  letter-spacing:-.04em;
  margin-top:15px;
}

.song-detail p {
  font-size:15px;
  color:#687b50;
  margin-top:13px;
}

.song-detail-footer {
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:22px 33px;
  background:#d2dfbc;
  border-top:1px solid #b8c9a066;
  gap:20px;
}

.song-detail-footer>span {
  font-size:11px;
  color:#71825a;
}

.song-detail-footer button {
  display:flex;
  align-items:center;
  gap:18px;
  font-size:14px;
  color:#354624;
  border:0;
  padding:5px 0;
  background:transparent;
}

.song-detail-footer button:hover {
  color:#000;
}

.song-detail-footer button>span {
  font-size:22px;
}

.app-section {
  background:#e9ede2;
  border-top:1px solid #e1e7d8;
  border-bottom:1px solid #e1e7d8;
  padding-block:90px;
}

.app-layout {
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:105px;
  align-items:center;
}

.app-image {
  padding:24px 25px 18px;
  background:#f8faf6;
  border:1px solid #fff;
  border-radius:16px;
  box-shadow:0 18px 40px #4e5c3420;
  transform:rotate(-2deg);
}

.app-image-label {
  display:flex;
  align-items:center;
  gap:8px;
  font-size:11px;
  color:#81916c;
  margin-bottom:20px;
}

.app-image-label .status-dot {
  background:#8ba265;
  box-shadow:none;
}

.app-image img {
  border-radius:6px;
  width:100%;
  height:auto;
}

.app-image figcaption {
  font-size:10px;
  color:#7f8b71;
  margin-top:13px;
}

.app-copy h2 {
  font-size:44px;
  font-weight:550;
  line-height:1.4;
  letter-spacing:-.055em;
  margin-top:22px;
}

.app-copy>p:not(.eyebrow) {
  font-size:16px;
  line-height:1.9;
  color:var(--muted);
  margin-top:23px;
  max-width:370px;
}

.app-points {
  display:flex;
  flex-direction:column;
  gap:15px;
  font-size:14px;
  margin-top:26px;
  color:#62734d;
}

.app-points i {
  font-style:normal;
  font-size:12px;
  background:#dce6cc;
  border-radius:50%;
  padding:3px 5px;
  margin-right:10px;
}

.app-link {
  display:flex;
  gap:30px;
  align-items:center;
  border:0;
  background:transparent;
  padding:0 0 9px;
  border-bottom:1px solid #879775;
  font-size:14px;
  margin-top:31px;
  color:#344629;
}

.app-link span {
  font-size:22px;
}

.app-link:hover {
  color:#668e2b;
}

.heritage-layout {
  display:grid;
  grid-template-columns:1.18fr 1fr;
  gap:85px;
  align-items:center;
}

.heritage-image {
  border-radius:12px;
  overflow:hidden;
  background:var(--ink);
}

.heritage-image img {
  width:100%;
  height:auto;
  filter:saturate(.65);
}

.heritage-image figcaption {
  padding:22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  font-size:11px;
  color:#bec8b2;
}

.heritage-image figcaption>span:last-child {
  font-size:21px;
  color:var(--lime);
}

.heritage-mark {
  font-family:Georgia,serif;
  font-size:68px;
  color:#96ab72;
  display:block;
  line-height:.6;
}

.heritage-copy blockquote {
  font-family:var(--serif);
  font-size:33px;
  letter-spacing:-.02em;
  line-height:1.6;
  margin:5px 0 22px;
}

.heritage-copy em {
  font-style:normal;
  color:#7b8d61;
}

.heritage-copy>p {
  font-size:15px;
  line-height:1.95;
  color:var(--muted);
  max-width:370px;
}

.heritage-sign {
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-top:28px;
  padding-top:22px;
  font-size:11px;
  color:#8b987c;
}

.heritage-sign .brand-symbol {
  color:#8fa370;
  transform:scale(.6) skewY(-12deg);
  transform-origin:right center;
}

.brand small {
  font-size:12px;
}

.desktop-nav {
  font-size:14px;
}

.hero-description,.section-intro,.engine-details p,.feature-notes p,.heritage-copy>p {
  font-size:16px;
}

.step-content>span {
  font-size:14px;
}

.song-option,.learning-step {
  scroll-margin-block:110px;
}

.hero-visual.is-paused .signal i {
  animation-play-state:paused;
}

@media(max-width:1100px) {
  .learning-workspace {
    gap:28px;
    grid-template-columns:.95fr 1.05fr;
  }
  .learning-step {
    gap:13px;
    padding-block:24px;
  }
  .step-content strong {
    font-size:18px;
  }
  .step-content>span {
    font-size:13px;
  }
  .learning-preview {
    padding:13px 17px 20px;
  }
  .learning-panel {
    padding:23px 18px;
  }
  .lyric-tokens {
    gap:3px;
  }
  .learning-panel h3 {
    font-size:21px;
  }
  .learning-link {
    font-size:12px;
  }
  .feature-notes {
    gap:22px;
  }
  .feature-notes article {
    gap:12px;
  }
  .feature-notes p {
    font-size:14px;
  }
  .intelligence-grid {
    gap:40px;
    grid-template-columns:1.25fr 1fr;
  }
  .phoneme-console {
    padding:23px;
  }
  .console-title>span {
    font-size:19px;
  }
  .console-title strong {
    font-size:33px;
  }
  .comparison-row {
    gap:10px;
  }
  .comparison-row>div {
    gap:3px;
  }
  .comparison-row>div>span {
    font-size:12px;
  }
  .engine-details h3 {
    font-size:19px;
  }
  .engine-details p {
    font-size:14px;
  }
  .song-list {
    padding:16px 25px;
  }
  .song-subtitle {
    max-width:90px;
  }
  .song-option {
    gap:16px;
  }
  .song-option strong {
    font-size:19px;
  }
  .song-detail {
    padding:28px;
    min-height:420px;
  }
  .song-detail-copy {
    left:28px;
    right:28px;
  }
  .song-detail-footer {
    padding-inline:28px;
  }
  .song-detail-footer>span {
    font-size:10px;
  }
  .app-layout {
    gap:60px;
  }
  .app-copy h2 {
    font-size:38px;
  }
  .heritage-layout {
    gap:48px;
  }
  .heritage-copy blockquote {
    font-size:29px;
  }
  .heritage-copy>p {
    font-size:14px;
  }
  .hero-description {
    font-size:15px;
  }
}

@media(max-width:800px) {
  .learning-workspace {
    grid-template-columns:1fr;
    gap:32px;
  }
  .learning-step {
    padding:25px 4px;
    gap:18px;
  }
  .step-content strong {
    font-size:20px;
  }
  .step-content>span {
    font-size:14px;
  }
  .learning-link {
    font-size:14px;
    margin-top:13px;
  }
  .learning-preview {
    padding:14px 24px 27px;
  }
  .learning-panel {
    padding:28px;
    min-height:365px;
  }
  .learning-panel h3 {
    font-size:25px;
  }
  .lyric-tokens {
    gap:8px;
  }
  .lyric-tokens>span {
    font-size:19px;
  }
  .lyric-tokens small {
    font-size:13px;
  }
  .preview-caption strong {
    font-size:14px;
  }
  .preview-caption p {
    font-size:12px;
  }
  .feature-notes {
    margin-top:38px;
    gap:25px;
  }
  .feature-notes article {
    flex-direction:column;
    gap:14px;
  }
  .feature-notes h3 {
    font-size:16px;
  }
  .feature-notes p {
    font-size:14px;
  }
  .intelligence-grid {
    grid-template-columns:1fr;
    gap:38px;
  }
  .phoneme-console {
    padding:28px;
  }
  .console-title>span {
    font-size:24px;
  }
  .console-title strong {
    font-size:39px;
  }
  .comparison-row {
    gap:16px;
  }
  .comparison-row>div {
    gap:6px;
  }
  .comparison-row>div>span {
    font-size:16px;
  }
  .console-insight p {
    font-size:15px;
  }
  .engine-details {
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:24px;
  }
  .engine-details article+article {
    padding:0;
    margin:0;
    border:0;
  }
  .engine-details h3 {
    font-size:17px;
    line-height:1.6;
  }
  .engine-details p {
    font-size:14px;
  }
  .engine-footer {
    margin-top:35px;
    flex-direction:column;
    align-items:flex-start;
    gap:20px;
  }
  .engine-footer>div {
    width:100%;
    justify-content:space-between;
    gap:12px;
  }
  .song-explorer {
    grid-template-columns:1.05fr 1fr;
  }
  .song-list {
    padding:13px 20px;
  }
  .song-option {
    gap:15px;
    min-height:73px;
  }
  .song-option strong {
    font-size:18px;
  }
  .song-option[aria-selected="true"] .song-subtitle {
    display:none;
  }
  .song-detail {
    min-height:382px;
    padding:23px;
  }
  .song-detail-copy {
    left:23px;
    right:23px;
    bottom:27px;
  }
  .song-detail h3 {
    font-size:29px;
  }
  .song-detail p {
    font-size:13px;
    line-height:1.7;
  }
  .song-detail-index {
    font-size:8px;
  }
  .song-glyph {
    font-size:195px;
    top:50px;
    right:0;
  }
  .song-detail-footer {
    padding:17px 23px;
  }
  .song-detail-footer>span {
    display:none;
  }
  .song-detail-footer button {
    justify-content:space-between;
    width:100%;
    font-size:12px;
  }
  .app-section {
    padding-block:67px;
  }
  .app-layout {
    grid-template-columns:1fr 1fr;
    gap:35px;
  }
  .app-image {
    padding:15px;
  }
  .app-copy h2 {
    font-size:33px;
  }
  .app-copy>p:not(.eyebrow) {
    font-size:14px;
  }
  .app-points {
    font-size:12px;
    gap:14px;
  }
  .app-link {
    font-size:12px;
    gap:15px;
  }
  .app-image-label {
    font-size:9px;
  }
  .app-image figcaption {
    font-size:9px;
    line-height:1.7;
  }
  .heritage-layout {
    gap:32px;
    grid-template-columns:1fr 1fr;
  }
  .heritage-image figcaption {
    padding:17px;
    font-size:10px;
    line-height:1.8;
  }
  .heritage-copy blockquote {
    font-size:26px;
  }
  .heritage-copy>p {
    font-size:14px;
  }
  .heritage-sign {
    font-size:10px;
    line-height:1.7;
  }
  .brand small {
    font-size:10px;
  }
  .section-intro {
    font-size:15px;
  }
}

@media(max-width:560px) {
  .feature-notes {
    grid-template-columns:1fr;
    gap:23px;
  }
  .feature-notes article {
    flex-direction:row;
    gap:18px;
  }
  .feature-notes article>span {
    font-size:28px;
    width:29px;
    flex-shrink:0;
  }
  .feature-notes p {
    font-size:14px;
  }
  .feature-notes h3 {
    margin-bottom:7px;
  }
  .learning-preview {
    padding:12px 15px 19px;
  }
  .learning-panel {
    padding:23px 18px;
    min-height:349px;
  }
  .learning-panel h3 {
    font-size:22px;
  }
  .lyric-tokens {
    gap:3px;
  }
  .lyric-tokens>span {
    font-size:16px;
  }
  .lyric-tokens small {
    font-size:11px;
  }
  .panel-kicker {
    font-size:9px;
  }
  .preview-caption {
    gap:9px;
  }
  .preview-caption strong {
    font-size:12px;
  }
  .preview-caption p {
    font-size:11px;
  }
  .learning-link {
    font-size:12px;
  }
  .step-content strong {
    font-size:18px;
  }
  .step-content>span {
    font-size:13px;
  }
  .learning-step {
    gap:12px;
  }
  .step-arrow {
    font-size:19px;
  }
  .learning-calendar {
    gap:3px;
  }
  .progress-summary {
    gap:10px;
  }
  .progress-summary strong {
    font-size:24px;
  }
  .progress-summary small {
    font-size:9px;
  }
  .practice-demo {
    gap:22px;
  }
  .mic-symbol {
    width:59px;
    height:59px;
  }
  .practice-demo strong {
    font-size:16px;
  }
  .practice-demo div>span {
    font-size:10px;
  }
  .engine-details {
    grid-template-columns:1fr;
    gap:25px;
  }
  .engine-details article+article {
    border-top:1px solid var(--dark-line);
    padding-top:24px;
  }
  .engine-details h3 {
    font-size:21px;
  }
  .engine-details p {
    font-size:15px;
    max-width:none;
  }
  .phoneme-console {
    padding:21px 17px;
  }
  .console-header {
    font-size:12px;
  }
  .example-label {
    font-size:9px;
  }
  .console-title {
    gap:12px;
    margin-block:27px 24px;
  }
  .console-title>span {
    font-size:18px;
  }
  .console-title strong {
    font-size:31px;
  }
  .console-title small {
    font-size:12px;
  }
  .comparison-row {
    gap:9px;
  }
  .comparison-row>span {
    font-size:10px;
  }
  .comparison-row>div {
    gap:3px;
  }
  .comparison-row>div>span {
    font-size:11px;
    padding-block:9px;
  }
  .comparison-row>div>.needs-work {
    padding-bottom:7px;
  }
  .comparison-legend {
    gap:16px;
    font-size:9px;
  }
  .console-insight {
    gap:10px;
  }
  .console-insight p {
    font-size:13px;
  }
  .console-insight p>span {
    font-size:11px;
  }
  .console-disclaimer {
    font-size:9px;
  }
  .engine-footer {
    font-size:10px;
  }
  .engine-footer>div {
    gap:7px;
  }
  .song-explorer {
    grid-template-columns:1fr;
  }
  .song-list {
    padding:9px 23px;
  }
  .song-option {
    min-height:68px;
  }
  .song-option strong {
    font-size:20px;
  }
  .song-option[aria-selected="true"] .song-subtitle {
    display:block;
    max-width:none;
    font-size:9px;
  }
  .song-detail {
    min-height:350px;
  }
  .song-glyph {
    font-size:230px;
    right:15px;
    top:0;
  }
  .song-detail-index {
    font-size:10px;
  }
  .song-detail-copy {
    bottom:27px;
  }
  .song-detail h3 {
    font-size:33px;
  }
  .song-detail p {
    font-size:14px;
  }
  .song-detail-footer {
    padding:18px 23px;
  }
  .song-detail-footer>span {
    display:block;
  }
  .song-detail-footer button {
    width:auto;
    font-size:14px;
    gap:21px;
  }
  .app-layout {
    grid-template-columns:1fr;
    gap:45px;
  }
  .app-copy {
    order:-1;
  }
  .app-copy h2 {
    font-size:37px;
  }
  .app-copy>p:not(.eyebrow) {
    font-size:16px;
    max-width:none;
  }
  .app-points {
    font-size:14px;
  }
  .app-link {
    font-size:14px;
  }
  .app-image {
    max-width:450px;
    padding:20px;
  }
  .app-image-label {
    font-size:11px;
  }
  .app-image figcaption {
    font-size:10px;
  }
  .heritage-layout {
    grid-template-columns:1fr;
    gap:40px;
  }
  .heritage-copy blockquote {
    font-size:33px;
  }
  .heritage-copy>p {
    font-size:16px;
    max-width:none;
  }
  .heritage-sign {
    font-size:12px;
  }
  .hero-description {
    font-size:15px;
  }
  .section-intro {
    font-size:15px;
  }
}

@media(max-width:360px) {
  .container {
    width:calc(100% - 32px);
  }
  .header-inner {
    gap:12px;
  }
  .brand {
    gap:7px;
    font-size:17px;
  }
  .nav-cta {
    padding-inline:10px;
  }
  .hero-actions {
    gap:14px;
  }
  .button {
    padding-inline:15px;
    gap:18px;
  }
  .text-link {
    font-size:11px;
  }
  .hero-note {
    font-size:10px;
    gap:10px;
  }
  .analysis-card {
    left:3%;
    right:3%;
    padding:16px;
  }
  .analysis-card-top strong {
    font-size:12px;
  }
  .analysis-done {
    font-size:8px;
  }
  .analysis-score {
    gap:7px;
  }
  .score-message>span {
    font-size:10px;
  }
  .score-bars {
    gap:3px;
  }
  .score-bars i {
    width:4px;
  }
  .score-number {
    font-size:51px;
  }
  .comparison-row {
    gap:6px;
  }
  .comparison-row>div {
    gap:2px;
  }
  .comparison-row>div>span {
    font-size:10px;
  }
  .console-title>span {
    font-size:16px;
  }
  .console-title strong {
    font-size:28px;
  }
  .step-content strong {
    font-size:16px;
  }
  .step-content>span {
    font-size:12px;
  }
  .learning-panel {
    padding-inline:13px;
  }
  .learning-panel h3 {
    font-size:20px;
  }
  .song-subtitle {
    display:none!important;
  }
}

/* Model introduction: domain context and an accessible inference diagram. */
.model-section {
  background:#edf1e6;
  border-bottom:1px solid #dce3d2;
}
.model-title-accent {
  color:#5c773a;
}
.model-layout {
  display:grid;
  grid-template-columns:1fr 1.05fr;
  gap:80px;
  align-items:center;
}
.model-principles {
  min-width:0;
}
.model-principle {
  display:flex;
  gap:22px;
  padding-block:27px;
  border-top:1px solid #d0dac3;
}
.model-principle-index {
  font-size:12px;
  color:#61734e;
  padding-top:6px;
}
.model-principle h3 {
  font-size:22px;
  font-weight:550;
  line-height:1.5;
  letter-spacing:-.035em;
}
.model-principle p {
  margin-top:12px;
  color:#626e57;
  font-size:16px;
  line-height:1.9;
}
.model-feedback-link {
  display:inline-flex;
  align-items:center;
  gap:26px;
  margin-top:8px;
  font-size:14px;
  color:#506436;
  padding-bottom:8px;
  border-bottom:1px solid #a7b497;
}
.model-feedback-link:hover {
  color:var(--ink);
  border-color:var(--ink);
}
.model-feedback-link>span {
  font-size:22px;
}
.model-blueprint {
  padding:27px;
  background:#dfe8d1;
  border:1px solid #cdd9bc;
  border-radius:16px;
  min-width:0;
}
.model-blueprint-header {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:15px;
  margin-bottom:27px;
  color:#586e44;
  font-size:12px;
}
.model-blueprint-header>span:first-child {
  display:flex;
  align-items:center;
  gap:8px;
  letter-spacing:.07em;
}
.model-blueprint-header .status-dot {
  background:#66863e;
  box-shadow:none;
}
.model-input {
  display:flex;
  align-items:center;
  gap:15px;
  padding:18px;
  background:#f4f7ee;
  border:1px solid #cfdac1;
  border-radius:8px;
  font-size:14px;
}
.model-node-label {
  color:#64734f;
  font-size:12px;
  flex-shrink:0;
}
.model-input-wave {
  margin-left:auto;
  color:#72924a;
  white-space:nowrap;
  font-size:15px;
  letter-spacing:-2px;
}
.model-connector {
  height:34px;
  display:grid;
  place-items:center;
  color:#7a925b;
  font-size:23px;
}
.model-core {
  padding:29px 25px;
  border:1px solid #3b4e2e;
  border-radius:10px;
  background:var(--ink);
  color:var(--paper);
  box-shadow:0 10px 22px #24351010;
}
.model-core-label {
  color:#aabd94;
  font-size:12px;
  letter-spacing:.07em;
}
.model-core>strong {
  display:block;
  font-size:38px;
  font-weight:500;
  line-height:1.4;
  letter-spacing:-.045em;
  margin-top:14px;
}
.model-core>strong>span {
  color:var(--lime);
  white-space:nowrap;
}
.model-core>p {
  color:#b1c09f;
  margin-top:9px;
  font-size:14px;
  line-height:1.8;
}
.model-core-tags {
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:24px;
}
.model-core-tags>span {
  font-size:12px;
  color:#c3d5ad;
  background:#263020;
  border:1px solid #3d4c31;
  border-radius:4px;
  padding:6px 10px;
}
.model-output {
  padding:19px;
  border:1px solid #c1d3a8;
  border-radius:8px;
  background:#eaf3dd;
}
.model-output>div {
  display:flex;
  align-items:center;
  gap:15px;
  font-size:12px;
  color:#586d41;
}
.model-output>p {
  font-family:"Segoe UI",sans-serif;
  font-size:22px;
  line-height:1.6;
  word-spacing:5px;
  color:#365120;
  margin-top:13px;
}
.model-output>p>span {
  color:#5d743f;
}
.model-blueprint>figcaption {
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:21px;
  font-size:12px;
  line-height:1.8;
  color:#5a6c45;
}
.model-blueprint>figcaption>span {
  font-size:20px;
}
.model-foundations {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:35px;
  border-top:1px solid #d0dac3;
  padding-top:31px;
  margin-top:55px;
}
.model-foundations>p {
  font-size:14px;
  color:#657553;
}
.model-foundations dl {
  display:flex;
  gap:50px;
  margin:0;
}
.model-foundations dl>div {
  display:flex;
  align-items:center;
  gap:12px;
}
.model-foundations dt {
  color:#3e542b;
  font-size:18px;
  font-weight:550;
}
.model-foundations dd {
  color:#657553;
  font-size:12px;
  margin:0;
}
@media(max-width:1100px) {
  .model-layout {
    gap:40px;
  }
  .model-principle {
    gap:15px;
    padding-block:23px;
  }
  .model-principle h3 {
    font-size:20px;
  }
  .model-blueprint {
    padding:22px;
  }
  .model-blueprint-header {
    flex-wrap:wrap;
    gap:8px;
  }
  .model-core {
    padding:25px 21px;
  }
  .model-core>strong {
    font-size:31px;
  }
  .model-input-wave {
    font-size:12px;
  }
  .model-foundations dl {
    gap:26px;
  }
  .model-foundations dl>div {
    flex-direction:column;
    align-items:flex-start;
    gap:7px;
  }
}
@media(min-width:801px) and (max-width:960px) {
  .desktop-nav {
    gap:17px;
  }
  .header-inner {
    gap:18px;
  }
  .nav-cta {
    gap:15px;
    padding-inline:14px;
  }
}
@media(max-width:800px) {
  .model-layout {
    grid-template-columns:1fr;
    gap:34px;
  }
  .model-principle h3 {
    font-size:22px;
  }
  .model-blueprint {
    padding:27px;
  }
  .model-blueprint-header {
    flex-wrap:nowrap;
  }
  .model-core>strong {
    font-size:38px;
  }
  .model-core {
    padding:29px;
  }
  .model-input-wave {
    font-size:16px;
  }
  .model-foundations {
    flex-direction:column;
    align-items:flex-start;
    gap:23px;
    margin-top:35px;
  }
  .model-foundations dl {
    width:100%;
    justify-content:space-between;
    gap:20px;
  }
}
@media(max-width:480px) {
  .model-principle {
    gap:13px;
  }
  .model-principle h3 {
    font-size:19px;
  }
  .model-blueprint {
    padding:20px 17px;
  }
  .model-blueprint-header {
    flex-wrap:wrap;
    margin-bottom:20px;
    gap:9px;
  }
  .model-input {
    padding:16px 12px;
    gap:10px;
  }
  .model-input-wave {
    font-size:12px;
  }
  .model-core {
    padding:25px 18px;
  }
  .model-core>strong {
    font-size:30px;
  }
  .model-core-tags {
    gap:6px;
  }
  .model-core-tags>span {
    padding:6px 8px;
  }
  .model-output {
    padding:17px 14px;
  }
  .model-output>p {
    font-size:19px;
    word-spacing:2px;
  }
  .model-foundations dl {
    gap:14px;
    flex-wrap:wrap;
  }
  .model-foundations dt {
    font-size:17px;
  }
}
@media(max-width:360px) {
  .model-core>strong {
    font-size:26px;
  }
  .model-input-wave {
    display:none;
  }
}
/* Performance takes precedence; historical evaluation scope stays next to the data. */
.performance-context {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  margin-bottom:18px;
  color:#58694a;
  font-size:12px;
  line-height:1.8;
}
.performance-context>span:first-child {
  display:flex;
  align-items:center;
  gap:9px;
  font-weight:550;
}
.performance-context .status-dot {
  background:#60843d;
  box-shadow:none;
}
.performance-context>span:last-child>span {
  margin-inline:10px;
}
.performance-context a {
  text-decoration:underline;
  text-underline-offset:4px;
}
.performance-metrics {
  display:grid;
  grid-template-columns:1.3fr 1fr 1fr;
  gap:17px;
}
.performance-metric {
  min-width:0;
  background:#f8faf4;
  border:1px solid #ccd8bf;
  padding:29px;
  border-radius:14px;
}
.performance-metric-heading {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.performance-metric h3 {
  font-size:18px;
  font-weight:500;
}
.performance-metric-heading>span {
  font-size:12px;
  color:#64744f;
  letter-spacing:.08em;
}
.performance-value {
  display:block;
  font-variant-numeric:tabular-nums;
  font-size:clamp(48px,5.8vw,78px);
  font-weight:500;
  line-height:1;
  letter-spacing:-.065em;
  margin-top:42px;
  white-space:nowrap;
}
.performance-value>span {
  font-size:26px;
  letter-spacing:-.04em;
  margin-left:6px;
}
.performance-metric>p {
  margin-top:19px;
  color:#62734f;
  font-size:12px;
  line-height:1.8;
}
.performance-direction {
  display:inline-block;
  margin-top:20px;
  border:1px solid #d4dfc8;
  border-radius:4px;
  background:#eaf1e0;
  padding:5px 9px;
  font-size:12px;
  color:#526c38;
}
.performance-primary {
  background:var(--ink);
  color:var(--paper);
  border-color:#39492d;
}
.performance-primary .performance-metric-heading>span {
  color:#b6c5a3;
}
.performance-primary .performance-value {
  color:var(--lime);
  font-size:clamp(58px,6.8vw,96px);
  margin-top:32px;
}
.performance-primary-track {
  background:#35432a;
  height:4px;
  border-radius:4px;
  overflow:hidden;
  margin-top:25px;
}
.performance-primary-track>span {
  display:block;
  width:var(--metric-width);
  height:100%;
  background:var(--lime);
}
.performance-primary>p {
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  color:#b6c5a3;
  margin-top:16px;
}
.performance-primary>p>span {
  color:var(--lime);
}
.performance-comparison {
  margin-top:21px;
  border:1px solid #ccd8bf;
  border-radius:14px;
  padding:31px;
  background:#f8faf4;
}
.performance-comparison-heading {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.performance-chart-kicker {
  font-size:12px;
  color:#64764f;
}
.performance-comparison h3 {
  font-size:23px;
  font-weight:500;
  line-height:1.5;
  letter-spacing:-.035em;
  margin-top:10px;
}
.performance-gain {
  display:flex;
  align-items:center;
  gap:10px;
  color:#567439;
  background:#e5efda;
  border:1px solid #ccdbba;
  padding:14px 18px;
  border-radius:8px;
  flex-shrink:0;
  flex-wrap:wrap;
}
.performance-gain>span:first-child {
  font-size:28px;
  line-height:1;
}
.performance-gain>strong {
  font-size:27px;
  line-height:1;
  font-weight:500;
  letter-spacing:-.035em;
}
.performance-gain>span:last-child {
  font-size:12px;
}
.performance-chart {
  margin-top:35px;
}
.performance-chart-row+.performance-chart-row {
  margin-top:25px;
}
.performance-chart-label {
  display:flex;
  align-items:center;
  gap:9px;
  font-size:14px;
  color:#566b40;
}
.performance-series-dot {
  width:7px;
  height:7px;
  border-radius:50%;
  background:#929f83;
  flex-shrink:0;
}
.performance-series-nanyin {
  background:#6b8d40;
}
.performance-chart-label>strong {
  margin-left:auto;
  font-size:24px;
  font-weight:550;
  color:#273b1b;
  letter-spacing:-.045em;
}
.performance-chart-label small {
  font-size:14px;
  margin-left:3px;
}
.performance-chart-track {
  margin-top:10px;
  height:20px;
  background:#e8ede1;
  border-radius:4px;
  overflow:hidden;
}
.performance-chart-fill {
  display:block;
  width:var(--metric-width);
  height:100%;
  background:#779d48;
  border-radius:4px;
}
.performance-baseline {
  background:#adbba0;
}
.performance-chart-axis {
  display:flex;
  justify-content:space-between;
  color:#64764f;
  font-size:12px;
  margin-top:13px;
}
.performance-sample-summary {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:25px;
  border-top:1px solid #d7e1cd;
  margin-top:25px;
  padding-top:23px;
}
.performance-sample-summary>div {
  display:flex;
  align-items:center;
  gap:19px;
}
.performance-sample-summary strong {
  font-size:35px;
  font-weight:500;
  color:#3c5826;
  letter-spacing:-.055em;
}
.performance-sample-summary strong>span {
  font-size:20px;
  color:#657852;
}
.performance-sample-summary p {
  font-size:14px;
  line-height:1.8;
  color:#62754f;
}
.performance-sample-summary>p {
  font-size:12px;
  text-align:right;
}
.performance-note {
  font-size:12px;
  color:#61714f;
  line-height:1.9;
  margin-top:19px;
  scroll-margin-top:115px;
}
.model-technical-details {
  border-top:1px solid #cbd7bc;
  border-bottom:1px solid #cbd7bc;
  margin-top:37px;
}
.model-technical-details>summary {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  list-style:none;
  cursor:pointer;
  padding-block:24px;
}
.model-technical-details>summary::-webkit-details-marker {
  display:none;
}
.model-technical-details>summary:focus-visible {
  outline:3px solid #649a29;
  outline-offset:6px;
}
.model-technical-details>summary>span:first-child {
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px 24px;
}
.model-technical-details>summary strong {
  font-size:18px;
  font-weight:500;
}
.model-technical-details>summary>span:first-child>span {
  color:#65764f;
  font-size:12px;
  line-height:1.8;
}
.model-details-icon {
  display:grid;
  place-items:center;
  width:33px;
  height:33px;
  border:1px solid #bfceae;
  border-radius:50%;
  color:#516d35;
  font-size:21px;
  flex-shrink:0;
  transition:transform .2s;
}
.model-technical-details[open] .model-details-icon {
  transform:rotate(45deg);
}
.model-technical-details>.model-layout {
  padding-top:23px;
}
.model-technical-details>.model-foundations {
  padding-bottom:28px;
}
@media(max-width:1100px) {
  .performance-metrics {
    gap:13px;
    grid-template-columns:1.25fr 1fr 1fr;
  }
  .performance-metric {
    padding:24px;
  }
  .performance-metric h3 {
    font-size:16px;
  }
  .performance-value {
    font-size:clamp(43px,6vw,64px);
  }
  .performance-primary .performance-value {
    font-size:clamp(50px,6.8vw,74px);
  }
  .performance-value>span {
    font-size:23px;
    margin-left:4px;
  }
  .performance-primary>p {
    gap:6px;
  }
}
@media(max-width:800px) {
  .performance-metrics {
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:15px;
  }
  .performance-primary {
    grid-column:1 / -1;
  }
  .performance-primary .performance-value {
    font-size:92px;
    margin-top:24px;
  }
  .performance-primary .performance-value>span {
    font-size:32px;
  }
  .performance-value {
    font-size:64px;
    margin-top:30px;
  }
  .performance-metric h3 {
    font-size:18px;
  }
  .performance-comparison {
    padding:26px;
  }
  .performance-comparison-heading {
    flex-wrap:wrap;
    gap:19px;
  }
  .performance-gain {
    padding:11px 14px;
  }
  .performance-gain>strong {
    font-size:24px;
  }
  .performance-sample-summary>p {
    display:none;
  }
}
@media(max-width:480px) {
  .performance-context {
    align-items:flex-start;
    flex-direction:column;
    gap:5px;
    margin-bottom:15px;
  }
  .performance-metrics {
    gap:11px;
  }
  .performance-metric {
    padding:21px 17px;
  }
  .performance-metric h3 {
    font-size:15px;
  }
  .performance-metric-heading {
    gap:6px;
    flex-wrap:wrap;
  }
  .performance-metric-heading>span {
    font-size:12px;
  }
  .performance-value {
    font-size:clamp(36px,10.5vw,48px);
    margin-top:24px;
  }
  .performance-value>span {
    font-size:17px;
    margin-left:3px;
  }
  .performance-primary {
    padding:26px;
  }
  .performance-primary .performance-value {
    font-size:clamp(62px,21vw,87px);
  }
  .performance-primary .performance-value>span {
    font-size:27px;
  }
  .performance-primary h3 {
    font-size:18px;
  }
  .performance-metric>p {
    margin-top:14px;
  }
  .performance-direction {
    margin-top:15px;
  }
  .performance-comparison {
    padding:23px 19px;
    margin-top:15px;
  }
  .performance-comparison h3 {
    font-size:20px;
  }
  .performance-chart {
    margin-top:27px;
  }
  .performance-chart-label {
    font-size:13px;
    gap:7px;
  }
  .performance-chart-label>strong {
    font-size:23px;
  }
  .performance-chart-track {
    height:17px;
  }
  .performance-sample-summary>div {
    gap:15px;
    flex-wrap:wrap;
  }
  .performance-sample-summary p {
    font-size:13px;
  }
  .performance-sample-summary strong {
    font-size:32px;
  }
  .model-technical-details>summary strong {
    font-size:16px;
  }
  .model-technical-details>summary>span:first-child {
    gap:7px;
  }
}
@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto;
  }
  *,*::before,*::after {
    animation:none!important;
    transition:none!important;
  }
  .reveal.is-pending {
    opacity:1;
    transform:none;
  }
}