:root {
  --bg: #edf0f6;
  --ink: #3d4166;
  --muted: rgba(61, 65, 102, 0.68);
  --line: rgba(61, 65, 102, 0.12);
  --aqua: #25bdc2;
  --cyan: #00badd;
  --white: #ffffff;
  --shadow: 0 18px 36px rgba(30, 41, 80, 0.08);
  --font-title: "FZCuYuan-M03S", "FZCuYuan-M03S Regular", "FZCuYuan-M03S:Regular", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  --font-body: "FZZhunYuan-M02S", "FZZhunYuan-M02S Regular", "FZZhunYuan-M02S:Regular",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-en: "Sofia Pro Soft", "Sofia_Pro_Soft", "Sofia Pro Soft Regular", Arial, sans-serif;
}

@font-face {
  font-family: "FZCuYuan-M03S";
  src:
    local("FZCuYuan-M03S"),
    local("FZCuYuan-M03S Regular"),
    local("FZCuYuan-M03S:Regular"),
    url("https://cn-ai.lingo-ace.com/official-website/fonts/fz-youya-bold.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "FZZhunYuan-M02S";
  src:
    local("FZZhunYuan-M02S"),
    local("FZZhunYuan-M02S Regular"),
    local("FZZhunYuan-M02S:Regular"),
    url("https://cn-ai.lingo-ace.com/official-website/fonts/fz-youya-regular.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Sofia Pro Soft";
  src:
    local("Sofia Pro Soft"),
    local("Sofia Pro Soft Regular"),
    local("Sofia_Pro_Soft"),
    url("https://cn-ai.lingo-ace.com/official-website/fonts/sofia-pro-soft-regular.otf") format("opentype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Sofia Pro Soft";
  src:
    local("Sofia Pro Soft Medium"),
    url("https://cn-ai.lingo-ace.com/official-website/fonts/sofia-pro-soft-medium.otf") format("opentype");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Sofia Pro Soft";
  src:
    local("Sofia Pro Soft Medium Italic"),
    url("https://cn-ai.lingo-ace.com/official-website/fonts/sofia-pro-soft-medium-italic.otf") format("opentype");
  font-weight: 500;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Sofia Pro Soft";
  src:
    local("Sofia Pro Soft Bold"),
    url("https://cn-ai.lingo-ace.com/official-website/fonts/sofia-pro-soft-bold.otf") format("opentype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background: #dfe4ee;
  color: var(--ink);
  font-family: var(--font-body);
}

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

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

.site-shell {
  position: relative;
  width: min(100%, 430px);
  min-height: 5350px;
  margin: 0 auto;
  overflow: hidden;
  background: var(--bg);
  border-radius: 0;
  box-shadow: 0 0 0 1px rgba(20, 30, 60, 0.05);
}

.brand-logo {
  position: relative;
  z-index: 3;
  width: 215px;
  height: 30px;
  margin: 0 auto 12px;
  object-fit: contain;
}

.section {
  position: relative;
  padding: 60px 20px 0;
}

.hero {
  position: relative;
  height: 732px;
  padding: 16px 20px 0;
  border-radius: 0;
}

.hero-bg {
  position: absolute;
  inset: 0 0 auto 0;
  height: 645px;
  border-radius: 0;
  overflow: hidden;
  opacity: 1;
}

.hero-bg.media-frame {
  border-radius: 0;
  background: transparent;
}

.hero-bg::after {
  position: absolute;
  inset: auto 0 0;
  height: 120px;
  content: "";
  background: linear-gradient(to bottom, rgba(237, 240, 246, 0), var(--bg));
}

.hero-pc-art {
  display: none;
}

.hero-copy,
.hero-panel,
.stats {
  position: relative;
  z-index: 2;
}

.hero-copy {
  max-width: 370px;
  margin: 0 auto;
  text-align: center;
  transform: translateY(8px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 24px;
  margin: 0 0 16px;
  padding: 5px 12px;
  border-radius: 999px;
  color: var(--aqua);
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 12px;
  font-style: italic;
  line-height: 14px;
  background: linear-gradient(90deg, rgba(33, 216, 215, 0.1), rgba(33, 216, 215, 0.2));
}

.eyebrow-text {
  display: flex;
  align-items: flex-end;
  height: 14px;
  line-height: 12px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  position: relative;
  margin: 0 auto 8px;
  font-family: var(--font-title);
  font-weight: 400;
  font-size: 34px;
  line-height: 1.4;
  letter-spacing: 0.5px;
  color: #3d4166;
}

.hero-title-layer {
  display: block;
}

.hero-title-base {
  color: #3d4166;
}

.hero-title-glow {
  position: absolute;
  inset: 0;
  color: transparent;
  opacity: 0.6;
  pointer-events: none;
  user-select: none;
  background:
    radial-gradient(
      ellipse 360px 132px at 20% 22%,
      rgba(33, 216, 215, 1) 0%,
      rgba(33, 216, 215, 1) 12%,
      rgba(33, 216, 215, 0.72) 34%,
      rgba(33, 216, 215, 0.28) 55%,
      rgba(33, 216, 215, 0) 76%
    );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  margin-bottom: 6px;
  font-family: var(--font-title);
  font-weight: 400;
  font-size: 26px;
  line-height: 1.4;
  letter-spacing: 0.5px;
}

h3 {
  margin-bottom: 8px;
  font-family: var(--font-title);
  font-weight: 400;
  font-size: 18px;
  line-height: 1.45;
}

.lead,
.body-text,
.section-heading p,
.quote {
  color: var(--muted);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.5px;
}

.lead {
  width: 342px;
  margin: 0 auto;
}

.lead strong {
  color: #3d4166;
  font-family: var(--font-title);
  font-weight: 400;
}

.glass-panel {
  border: 1px solid rgba(255, 255, 255, 0.82);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.28));
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-panel {
  position: absolute;
  top: 496px;
  left: 36px;
  z-index: 3;
  width: 358px;
  height: 96px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.7);
  box-shadow: none;
  overflow: hidden;
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}

.hero-panel.glass-panel {
  border: none;
}

.hero-button-shadow {
  position: absolute;
  left: 24px;
  top: 522px;
  z-index: 2;
  width: 382px;
  height: 126px;
  object-fit: fill;
  opacity: 0.72;
  pointer-events: none;
}

.pill-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: center;
  height: 40px;
  padding: 0 10px;
  border-radius: 28px 28px 0 0;
  background: transparent;
}

.pill-row span {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: rgba(61, 65, 102, 0.8);
  font-family: var(--font-en);
  font-style: italic;
  font-weight: 500;
  font-size: 10px;
  line-height: 1;
  white-space: nowrap;
}

.pill-row span + span::before {
  position: absolute;
  left: -0.5px;
  width: 1px;
  height: 16px;
  content: "";
  background: rgba(61, 65, 102, 0.18);
}

.pill-row img {
  width: 12px;
  height: 12px;
  object-fit: contain;
}

.primary-button {
  position: absolute;
  left: 0;
  bottom: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  min-height: 56px;
  padding: 10px 22px;
  border: 0;
  border-radius: 999px;
  color: #fff;
  font-family: var(--font-title);
  font-weight: 400;
  font-size: 20px;
  line-height: 1.3;
  text-align: center;
  background: linear-gradient(105deg, #00badd, #50d5bc);
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
  box-shadow:
    inset 0 0 8px rgba(255, 255, 255, 0.6),
    inset 0 -20px 28px rgba(255, 255, 255, 0.16),
    0 12px 12px rgba(0, 0, 0, 0.1);
}

.primary-button img {
  width: 22px;
  height: 22px;
}

.primary-button.compact {
  position: relative;
  left: auto;
  bottom: auto;
  width: min(100%, 280px);
  margin: 48px auto 0;
}

.primary-button.why-cta {
  display: none;
}

@keyframes heroCtaShine {
  0%,
  26% {
    opacity: 0;
    transform: translateX(-120%) skewX(-18deg);
  }

  42% {
    opacity: 0.58;
  }

  76%,
  100% {
    opacity: 0;
    transform: translateX(120%) skewX(-18deg);
  }
}

.stats {
  position: absolute;
  top: 642px;
  left: 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  width: 390px;
  height: 94px;
  min-height: 94px;
  margin: 0;
  border-radius: 16px;
}

.stats div {
  position: relative;
  display: grid;
  grid-template-rows: 24px 24px;
  align-items: center;
  justify-items: center;
  align-content: start;
  gap: 8px;
  padding: 24px 8px 0;
  text-align: center;
}

.stats div + div {
  border-left: 0;
}

.stats div + div::before {
  position: absolute;
  top: 50%;
  left: 0;
  width: 1px;
  height: 16px;
  content: "";
  background: rgba(61, 65, 102, 0.16);
  transform: translateY(-50%);
}

.stats strong {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  height: 24px;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 24px;
  line-height: 24px;
  color: rgba(61, 65, 102, 0.8);
}

.stats small {
  font-family: var(--font-title);
  font-size: 12px;
  font-weight: 400;
}

.stats span {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  height: 24px;
  color: rgba(61, 65, 102, 0.62);
  font-family: var(--font-body);
  font-size: 10px;
  line-height: 1.25;
}

.stats-mobile-break {
  display: none;
}

.desktop-break {
  display: none;
}

.section-heading {
  margin: 0 auto 28px;
  text-align: center;
}

.section-heading .eyebrow {
  margin-bottom: 16px;
  color: var(--aqua);
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 12px;
  font-style: italic;
  line-height: 14px;
}

.eyebrow::before,
.eyebrow::after {
  width: 10px;
  height: 10px;
  content: "";
  background: url("https://cn-ai.lingo-ace.com/official-website/assets/png/deco-star.png?v=20260601") center / contain no-repeat;
}

.eyebrow::before {
  margin-right: 12px;
}

.eyebrow::after {
  margin-left: 12px;
}

.meta-line {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  white-space: nowrap;
}

.meta-line span {
  position: relative;
  font-family: var(--font-title);
  font-size: 10px;
  line-height: 1.2;
  color: rgba(61, 65, 102, 0.6);
}

.meta-line span + span::before,
.feature-label span + span::before {
  position: absolute;
  top: 50%;
  left: -11px;
  width: 1px;
  height: 8px;
  content: "";
  background: rgba(61, 65, 102, 0.2);
  transform: translateY(-50%) rotate(24deg);
}

.gradient-heading {
  position: relative;
  color: #3d4166;
}

.gradient-heading-layer {
  display: block;
}

.gradient-heading-base {
  color: #3d4166;
}

.gradient-heading-glow {
  position: absolute;
  inset: 0;
  display: none;
  color: transparent;
  pointer-events: none;
  user-select: none;
  background: var(--heading-glow);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-heading-text {
  position: relative;
  display: inline-block;
}

.gradient-heading--intro {
  --heading-glow: radial-gradient(
    ellipse 118px 50px at 24% 36%,
    rgba(33, 216, 215, 0.6) 0%,
    rgba(33, 216, 215, 0.36) 24%,
    rgba(33, 216, 215, 0.12) 48%,
    rgba(33, 216, 215, 0) 82%
  );
}

.gradient-heading--team {
  --heading-glow: radial-gradient(
    ellipse 210px 92px at 20% 20%,
    rgba(33, 216, 215, 0.6) 0%,
    rgba(33, 216, 215, 0.42) 28%,
    rgba(33, 216, 215, 0.16) 55%,
    rgba(33, 216, 215, 0) 78%
  );
}

.gradient-heading--why {
  --heading-glow: radial-gradient(
    ellipse 174px 54px at 71% 36%,
    rgba(33, 216, 215, 0.6) 0%,
    rgba(33, 216, 215, 0.36) 24%,
    rgba(33, 216, 215, 0.12) 48%,
    rgba(33, 216, 215, 0) 82%
  );
}

.gradient-heading--interaction .gradient-heading-base {
  color: #fff;
}

.gradient-heading--interaction .gradient-heading-glow,
.gradient-heading--backed .gradient-heading-glow {
  display: none;
}

.gradient-heading--download {
  --heading-glow: radial-gradient(
    ellipse 126px 54px at 80% 36%,
    rgba(33, 216, 215, 0.6) 0%,
    rgba(33, 216, 215, 0.36) 24%,
    rgba(33, 216, 215, 0.12) 50%,
    rgba(33, 216, 215, 0) 86%
  );
}

.intro {
  height: 738px;
}

.intro .body-text {
  position: relative;
  top: -8px;
  width: min(100%, 374px);
  margin: 0 auto 12px;
  font-size: 14px;
  text-align: center;
}

.intro-copy-mobile {
  display: none;
}

.intro-copy-desktop {
  display: inline;
}

.body-text strong {
  color: #3d4166;
  font-family: var(--font-title);
  font-weight: 400;
}

.luna-stage {
  position: relative;
  height: 391px;
  margin-top: -50px;
}

.luna-stage .intro-platform {
  position: absolute;
  left: 8px;
  top: 298px;
  width: 374px;
  height: 175px;
  object-fit: contain;
  transform: none;
  z-index: 0;
  pointer-events: none;
}

.luna-stage .luna-main {
  position: absolute;
  left: 50%;
  top: 48px;
  width: 196px;
  height: 314px;
  object-fit: contain;
  transform: translateX(-50%);
  z-index: 5;
}

.luna-stage article {
  position: absolute;
  z-index: 3;
  width: 148px;
  min-height: 92px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.66);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.04);
  backdrop-filter: blur(12px);
}

.luna-stage article:nth-of-type(1) {
  top: 76px;
  right: 0;
}

.luna-stage article:nth-of-type(2) {
  left: 0;
  top: 158px;
}

.luna-stage article:nth-of-type(3) {
  right: 28px;
  top: 224px;
}

.luna-stage h3 {
  font-size: 17px;
  text-align: center;
}

.luna-stage article p {
  margin: 0;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.55;
  text-align: center;
}

.quote {
  position: relative;
  z-index: 2;
  width: min(100%, 304px);
  margin: 10px auto 0;
  text-align: center;
  font-size: 14px;
  line-height: 1.4;
}

.luna-stage .quote {
  position: absolute;
  left: 50%;
  top: 401px;
  margin: 0;
  transform: translateX(-50%);
}

.quote span {
  display: block;
}

.team {
  height: 708px;
  background: #fff;
}

.team-content {
  display: contents;
}

.media-frame {
  overflow: hidden;
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0.2)),
    rgba(37, 189, 194, 0.08);
}

.media-frame img,
.media-frame video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.team-image {
  aspect-ratio: 390 / 260;
  margin-bottom: 28px;
}

.team .body-text {
  width: min(100%, 390px);
  margin: 0 auto 18px;
  color: rgba(61, 65, 102, 0.8);
  font-size: 14px;
  line-height: 1.6;
  text-align: center;
}

.why {
  height: 1084px;
}

.comparison-grid {
  position: relative;
  display: block;
  width: 390px;
  height: 348px;
  max-width: 100%;
  margin: 0 auto 40px;
}

.comparison-slice {
  display: none;
}

.problem-card,
.solution-card,
.feature-strip article {
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.03);
}

.feature-strip article {
  border: 0.5px solid rgba(61, 65, 102, 0.1);
  box-shadow: inset 0 0 0 0.5px rgba(255, 255, 255, 0.6);
}

.problem-card {
  position: absolute;
  top: 21px;
  left: 0;
  z-index: 1;
  width: 168px;
  min-height: 306px;
  padding: 12px 16px;
  border: 0.5px solid rgba(255, 91, 26, 0.65);
  border-radius: 16px 0 0 16px;
  background:
    radial-gradient(ellipse 46px 38px at 0 0, rgba(255, 91, 26, 0.08), rgba(255, 91, 26, 0) 100%),
    linear-gradient(270deg, rgba(255, 255, 255, 0) 9.5%, rgba(255, 255, 255, 0.8) 100%);
  box-shadow: none;
}

.solution-card {
  position: absolute;
  top: 0;
  right: 0;
  z-index: 2;
  width: 238px;
  min-height: 348px;
  padding: 16px;
  border: 1px solid rgba(37, 189, 194, 0.6);
  border-radius: 16px;
  background:
    radial-gradient(ellipse 118px 96px at 92% 4%, rgba(37, 189, 194, 0.045) 0%, rgba(37, 189, 194, 0.018) 38%, rgba(37, 189, 194, 0) 74%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.99) 0%, rgba(250, 254, 255, 0.99) 58%, rgba(244, 251, 255, 0.98) 100%);
  box-shadow: 0 12px 24px rgba(37, 189, 194, 0.1);
  backdrop-filter: blur(10px);
}

.problem-card::before {
  position: absolute;
  top: -12px;
  left: -8px;
  content: "😭";
  font-size: 28px;
  line-height: 1;
  transform: rotate(-10deg);
}

.solution-card::after {
  position: absolute;
  top: -13px;
  right: -10px;
  content: "🎉";
  font-size: 40px;
  line-height: 1;
}

.comparison-grid h3 {
  color: #3d4166;
  font-size: 18px;
  line-height: 1.6;
  text-align: center;
}

.problem-card h3 {
  margin-bottom: 12px;
  font-size: 16px;
  background: linear-gradient(90deg, #ff5b1a, rgba(255, 91, 26, 0.4));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.solution-card h3 {
  margin-bottom: 16px;
  color: #25bdc2;
  font-size: 20px;
}

.icon-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.icon-list li {
  display: grid;
  grid-template-columns: 32px 1fr;
  align-items: center;
  gap: 6px;
  min-height: 36px;
  color: rgba(61, 65, 102, 0.6);
  font-family: var(--font-title);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.5px;
}

.problem-card .icon-list li + li {
  border-top: 0.5px solid rgba(255, 91, 26, 0.12);
  padding-top: 8px;
}

.solution-card .icon-list li {
  grid-template-columns: 36px 1fr;
  gap: 8px;
  color: #3d4166;
  font-size: 14px;
  min-height: 42px;
}

.solution-card .icon-list {
  gap: 16px;
}

.icon-list img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
}

.feature-strip-shell {
  position: relative;
}

.feature-strip {
  display: flex;
  gap: 16px;
  width: calc(100% + 40px);
  margin-left: -20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-padding-inline: 20px;
  padding: 0 20px 6px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.feature-strip::-webkit-scrollbar {
  display: none;
}

.feature-strip article {
  display: flex;
  flex: 0 0 220px;
  flex-direction: column;
  justify-content: space-between;
  min-height: 360px;
  overflow: hidden;
  border-radius: 16px;
  scroll-snap-align: start;
}

.feature-strip article div {
  padding: 20px 16px 16px;
}

.feature-strip p {
  margin-bottom: 12px;
  color: rgba(61, 65, 102, 0.6);
  font-family: var(--font-title);
  font-size: 10px;
  line-height: 1.3;
}

.feature-strip .feature-label {
  display: inline-flex;
  align-items: center;
  gap: 0;
  color: rgba(61, 65, 102, 0.62);
  font-family: var(--font-title);
  font-size: 12px;
  line-height: 1.35;
  white-space: nowrap;
}

.feature-strip .feature-label span {
  position: relative;
  display: inline-flex;
  align-items: center;
  color: inherit;
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

.feature-strip .feature-label span + span::before {
  margin: 0 8px;
  color: rgba(61, 65, 102, 0.28);
  content: "/";
  font-size: 12px;
  line-height: 1;
}

.feature-strip h3 {
  font-size: 18px;
  line-height: 1.6;
}

.feature-strip .feature-copy {
  display: block;
  color: rgba(61, 65, 102, 0.78);
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 16px;
}

.interaction {
  height: 563px;
  background: #7580e5;
}

.feature-strip img {
  height: 146px;
  width: 100%;
  object-fit: cover;
}

.interaction .media-frame {
  --interaction-frame-pad: 8px;
  --interaction-frame-gap: 16px;
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 390 / 211;
  border: 0.5px solid rgba(255, 255, 255, 0.7);
  border-radius: 20px;
  background: #3d4166;
  box-shadow: 0 24px 24px rgba(0, 0, 0, 0.2);
}

.interaction .media-frame > img:not(.sound-icon),
.interaction .media-frame > video {
  position: absolute;
  inset: var(--interaction-frame-pad);
  width: calc(100% - var(--interaction-frame-gap));
  height: calc(100% - var(--interaction-frame-gap));
  border-radius: 12px;
  object-fit: cover;
  object-position: center center;
}

.video-sound-toggle {
  position: absolute;
  right: 14px;
  bottom: 14px;
  z-index: 2;
  display: grid;
  width: 36px;
  height: 36px;
  padding: 0;
  place-items: center;
  border: 0;
  border-radius: 999px;
  appearance: none;
  background: rgba(61, 65, 102, 0.7);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.18);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.video-sound-toggle:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.video-sound-toggle .sound-icon {
  display: block;
  width: 18px;
  height: 18px;
  object-fit: contain;
}

.interaction .eyebrow {
  color: #fff;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.2));
}

.interaction .eyebrow::before,
.interaction .eyebrow::after {
  filter: brightness(0) invert(1);
}

.interaction h2 {
  color: #fff;
}

.interaction .meta-line span {
  color: rgba(255, 255, 255, 0.6);
}

.interaction .meta-line span + span::before {
  background: rgba(255, 255, 255, 0.25);
}

.interaction .primary-button.compact {
  position: absolute;
  top: 447px;
  left: 75px;
  width: 280px;
  height: 56px;
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.1);
  box-shadow:
    inset 0 0 8px rgba(255, 255, 255, 0.6),
    0 12px 24px rgba(0, 0, 0, 0.1);
}

.backed {
  height: 707px;
  background: #fff;
}

.backed-heading h2 {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
}

.backed-heading h2 img {
  width: 94px;
  height: 33px;
  object-fit: contain;
}

.map-frame {
  height: 265px;
  margin-top: 28px;
  border-radius: 0;
  background: transparent;
}

.award-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
  margin-top: 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.03);
}

.award-grid article {
  display: flex;
  min-height: 120px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 18px 14px;
  text-align: center;
}

.award-grid article + article {
  border-left: 1px solid var(--line);
}

.award-grid img {
  width: auto;
  height: 30px;
  object-fit: contain;
}

.award-grid span {
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.5;
}

.media-logo-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  width: 390px;
  margin-top: 20px;
}

.media-logo-row span {
  display: grid;
  place-items: center;
  height: 60px;
  padding: 10px;
  border: 0.5px solid rgba(61, 65, 102, 0.2);
  border-radius: 12px;
}

.media-logo-row img {
  max-width: 100%;
  max-height: 34px;
  object-fit: contain;
}

.download-row {
  position: relative;
  display: grid;
  grid-template-columns: 130px 1fr;
  align-items: end;
  gap: 8px;
  width: min(100%, 328px);
  margin: 36px auto 0;
}

.download {
  height: 535px;
}

.teacher-small {
  width: 139px;
  height: 275px;
  object-fit: contain;
}

.qr-card {
  display: grid;
  gap: 10px;
  justify-items: center;
  padding: 8px;
  border: 1px solid rgba(37, 189, 194, 0.25);
  border-radius: 20px;
  background: rgba(37, 189, 194, 0.1);
}

.qr-card img {
  width: 180px;
  height: 180px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  border-radius: 12px;
}

.qr-card span {
  color: var(--aqua);
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 20px;
}

@media (max-width: 767px) {
  .download-row {
    position: absolute;
    top: 192px;
    left: 0;
    display: block;
    width: 100%;
    height: 275px;
    margin: 0;
  }

  .teacher-small {
    position: absolute;
    z-index: 2;
    top: 0;
    left: calc(50% - 170px);
    width: 132px;
    height: 269px;
  }

  .qr-card {
    position: absolute;
    z-index: 1;
    top: 24px;
    left: calc(50% - 45px);
    width: 196px;
    height: 226px;
    padding: 8px;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .download-row {
    position: absolute;
    top: 192px;
    left: 0;
    display: block;
    width: 100%;
    height: 275px;
    margin: 0;
  }

  .teacher-small {
    position: absolute;
    z-index: 2;
    top: 0;
    left: calc(50% - 177px);
    width: 139px;
    height: 275px;
  }

  .qr-card {
    position: absolute;
    z-index: 1;
    top: 24px;
    left: calc(50% - 45px);
    width: 196px;
    height: 226px;
    padding: 8px;
  }
}

.footer {
  min-height: 339px;
  padding: 40px 20px calc(56px + env(safe-area-inset-bottom, 0px));
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
  background: #3d4166;
}

.footer h2 {
  color: #fff;
}

.socials {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin: 20px 0 52px;
}

.socials a {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
}

.socials a[aria-disabled="true"],
.legal-links a[aria-disabled="true"] {
  cursor: default;
}

.socials img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

@media (max-width: 1023px) {
  .socials .social-redbook-icon {
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 767px) {
  .socials img {
    width: 30px;
    height: 30px;
  }

  .socials .social-redbook-icon {
    width: 40px;
    height: 40px;
  }

  .legal-links {
    gap: 12px;
  }

  .legal-links a {
    position: static;
    padding: 0;
    white-space: nowrap;
  }

  .legal-links a + a::before {
    content: "";
    display: none;
  }

  .legal-links a:nth-of-type(4)::before,
  .legal-links a:nth-of-type(6)::before {
    content: none;
  }
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 20px;
  margin-bottom: 14px;
  font-family: var(--font-body);
  font-size: 14px;
}

.legal-links-row {
  display: contents;
}

.legal-links-divider {
  display: block;
  width: 1px;
  height: 16px;
  background: rgba(255, 255, 255, 0.1);
}

.legal-links-divider--desktop {
  display: none;
}

.footer p {
  margin-bottom: 10px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.4;
}

.media-missing img,
img.media-missing {
  visibility: hidden;
}

.team-proof-line,
.team-metrics,
.feature-control {
  display: none;
}

@media (max-width: 374px) {
  .brand-logo {
    width: 180px;
  }

  h1 {
    font-size: 29px;
  }

  .hero-panel {
    width: calc(100% - 36px);
  }

  .comparison-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .problem-card {
    border-radius: 16px;
  }
}

@media (max-width: 1023px) {
  .why {
    height: 1124px;
  }

  .hero .primary-button.hero-cta {
    overflow: hidden;
    isolation: isolate;
  }

  .hero .primary-button.hero-cta::before {
    position: absolute;
    inset: -3px;
    z-index: 1;
    content: "";
    border-radius: inherit;
    pointer-events: none;
    background: linear-gradient(
      110deg,
      transparent 0%,
      rgba(255, 255, 255, 0) 35%,
      rgba(255, 255, 255, 0.52) 48%,
      rgba(255, 255, 255, 0.18) 54%,
      transparent 68%
    );
    transform: translateX(-120%) skewX(-18deg);
    animation: heroCtaShine 3.2s ease-in-out infinite;
    will-change: opacity, transform;
  }

  .hero .primary-button.hero-cta img {
    position: relative;
    z-index: 2;
  }

  .feature-strip .feature-label {
    gap: 8px;
    font-size: 10px;
  }

  .feature-strip .feature-label span + span {
    gap: 8px;
  }

  .feature-strip .feature-label span {
    font-size: 10px;
  }

  .feature-strip .feature-label span + span::before {
    position: static;
    display: block;
    flex: 0 0 1px;
    width: 1px;
    height: 10px;
    margin: 0;
    content: "";
    font-size: 10px;
    background: rgba(61, 65, 102, 0.32);
    transform: none;
  }

  .map-frame img {
    object-fit: contain;
  }

  .why .primary-button.why-cta {
    position: relative;
    left: auto;
    bottom: auto;
    display: flex;
    width: 280px;
    height: 56px;
    min-height: 56px;
    margin: 40px auto 0;
    border: 0;
    transform: none;
    box-shadow:
      inset 0 0 8px rgba(255, 255, 255, 0.6),
      inset 0 -20px 28px rgba(255, 255, 255, 0.16),
      0 12px 12px rgba(0, 92, 92, 0.2);
  }

  .pill-row span {
    gap: 4px;
  }

  .stats span {
    display: block;
    letter-spacing: 0.5px;
    line-height: 1.2;
  }

  .stats-mobile-break {
    display: inline;
  }

  .intro-copy-desktop {
    display: none;
  }

  .intro-copy-mobile {
    display: inline;
  }

  .backed-heading .eyebrow {
    margin-bottom: 12px;
  }

  .backed-heading h2 {
    margin-bottom: 10px;
  }

  .backed-heading h2 img {
    width: 94px;
    height: 32.186px;
  }

  .backed-heading > p:last-child {
    margin: 0;
    color: rgba(61, 65, 102, 0.6);
    font-family: var(--font-title);
    font-size: 10px;
    line-height: 1.2;
    letter-spacing: 0.5px;
    white-space: nowrap;
  }

  .award-grid {
    display: flex;
    width: 390px;
    max-width: calc(100vw - 40px);
    height: 120px;
    margin: 0 auto;
    align-items: center;
    justify-content: center;
    gap: 0;
    overflow: hidden;
    border: 0.5px solid #1d9bfd;
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(29, 155, 253, 0.1) 0%, rgba(29, 155, 253, 0) 100%);
    box-shadow: none;
  }

  .award-grid article {
    position: relative;
    flex: 1 0 0;
    min-width: 0;
    height: 100%;
    min-height: 0;
    padding: 8px 0 0;
    gap: 12px;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    backdrop-filter: blur(10px);
  }

  .award-grid article + article {
    border-left: 0;
  }

  .award-grid article + article::before {
    position: absolute;
    left: 0;
    top: 50%;
    width: 0.5px;
    height: 80px;
    content: "";
    background: rgba(29, 155, 253, 0.22);
    transform: translateY(-50%);
  }

  .award-grid article:nth-child(1) img {
    width: 87px;
    height: 30px;
  }

  .award-grid article:nth-child(2) img {
    width: 117px;
    height: 30px;
  }

  .award-grid > article > span {
    color: rgba(61, 65, 102, 0.8);
    font-family: var(--font-body);
    font-size: 12px;
    line-height: 18px;
    letter-spacing: 0.5px;
    text-align: center;
    white-space: nowrap;
  }

  .award-grid > article > span > span {
    display: block;
  }

  .media-logo-row {
    display: flex;
    width: 390px;
    max-width: calc(100vw - 40px);
    margin: 20px auto 0;
    align-items: flex-start;
    gap: 8px;
  }

  .media-logo-row span {
    display: flex;
    flex: 1 0 0;
    min-width: 0;
    height: 60px;
    align-items: center;
    justify-content: center;
    padding: 12px 16px;
    border: 0.5px solid rgba(61, 65, 102, 0.2);
    border-radius: 16px;
    background: #fff;
  }

  .media-logo-row span:nth-child(1) img {
    width: 74px;
    height: 10px;
  }

  .media-logo-row span:nth-child(2) img {
    width: 75px;
    height: 20px;
  }

  .media-logo-row span:nth-child(3) img {
    content: url("https://cn-ai.lingo-ace.com/official-website/assets/png/media-logo-xinhua-cropped-3x.png");
    width: 66px;
    height: 29px;
  }

  .media-logo-row span:nth-child(4) img {
    content: url("https://cn-ai.lingo-ace.com/official-website/assets/png/media-logo-sina-cropped-3x.png");
    width: 67px;
    height: 29px;
  }

  .media-logo-row img {
    max-width: none;
    max-height: none;
    object-fit: contain;
  }
}

@media (max-width: 1023px) and (prefers-reduced-motion: reduce) {
  .hero .primary-button.hero-cta::before {
    opacity: 0;
    animation: none;
  }
}

@media (min-width: 768px) {
  body {
    padding: 0;
  }

  .site-shell {
    border-radius: 0;
  }
}

@media (min-width: 1024px) {
  :root {
    --page-max: 1200px;
    --page-pad: 40px;
    --page-gutter: max(var(--page-pad), calc((100vw - var(--page-max)) / 2));
  }

  body {
    background: var(--bg);
  }

  .site-shell {
    width: 100%;
    min-height: 0;
    max-width: none;
    box-shadow: none;
  }

  .section {
    padding: 100px var(--page-gutter) 0;
  }

  .brand-logo {
    width: 258px;
    height: 36px;
    margin-bottom: 28px;
  }

  .hero {
    height: 906px;
    padding: 24px var(--page-gutter) 0;
  }

  .hero-bg {
    left: 50%;
    width: 100vw;
    height: 840px;
    transform: translateX(-50%);
  }

  .hero-bg img {
    content: url("https://cn-ai.lingo-ace.com/official-website/assets/png/pc-hero-bg.png");
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
  }

  .hero-bg::after {
    height: 50px;
  }

  .hero-pc-art {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: block;
    pointer-events: none;
  }

  .hero-pc-art img {
    position: absolute;
    max-width: none;
    object-fit: contain;
  }

  .hero-pc-teacher {
    top: 327px;
    left: 50%;
    width: 240px;
    height: 357px;
    transform: translateX(-50%);
  }

  .hero-pc-icon-aa {
    top: 418px;
    left: calc(50% - 264px);
    width: 78px;
    height: 80px;
  }

  .hero-pc-icon-chat {
    top: 379px;
    left: calc(50% + 164px);
    width: 74px;
    height: 79px;
  }

  .hero-copy {
    max-width: 720px;
    transform: none;
  }

  h1 {
    margin-bottom: 12px;
    font-size: 60px;
    line-height: 1.3;
    letter-spacing: 0.5px;
  }

  .lead,
  .body-text,
  .section-heading p,
  .quote {
    font-size: 16px;
  }

  .lead {
    width: 760px;
  }

  .hero-panel {
    top: 614px;
    left: 50%;
    width: 428px;
    height: 104px;
    transform: translateX(-50%);
  }

  .hero-button-shadow {
    top: 648px;
    left: 50%;
    width: 408px;
    height: 135px;
    opacity: 0.72;
    filter: none;
    transform: translateX(calc(-50% - 9px));
  }

  .pill-row {
    height: 40px;
  }

  .pill-row span {
    font-size: 12px;
  }

  .primary-button {
    min-height: 64px;
    font-size: 24px;
  }

  .hero .primary-button.hero-cta {
    overflow: hidden;
    isolation: isolate;
  }

  .hero .primary-button.hero-cta::before {
    position: absolute;
    inset: -3px;
    z-index: 1;
    content: "";
    border-radius: inherit;
    pointer-events: none;
    background: linear-gradient(
      110deg,
      transparent 0%,
      rgba(255, 255, 255, 0) 35%,
      rgba(255, 255, 255, 0.52) 48%,
      rgba(255, 255, 255, 0.18) 54%,
      transparent 68%
    );
    transform: translateX(-120%) skewX(-18deg);
    animation: heroCtaShine 3.2s ease-in-out infinite;
    will-change: opacity, transform;
  }

  .hero .primary-button.hero-cta img {
    position: relative;
    z-index: 2;
  }

  .stats {
    top: 778px;
    left: 50%;
    width: calc(100% - 40px);
    max-width: var(--page-max);
    height: 128px;
    min-height: 128px;
    border-radius: 24px;
    transform: translateX(-50%);
  }

  .stats div {
    grid-template-rows: 40px 17px;
    gap: 8px;
    padding-top: 36px;
  }

  .stats div + div::before {
    height: 68px;
  }

  .stats strong {
    height: 40px;
    font-size: 40px;
    line-height: 40px;
  }

  .stats small {
    font-size: 20px;
  }

  .stats span {
    height: auto;
    font-size: 14px;
    line-height: 1.2;
  }

  .section-heading {
    margin-bottom: 48px;
  }

  .section-heading .eyebrow {
    height: 28px;
    margin-bottom: 12px;
    font-size: 16px;
    line-height: 16px;
  }

  .eyebrow-text {
    height: 18px;
    line-height: 16px;
  }

  h2 {
    font-size: 40px;
    line-height: 1.4;
  }

  .meta-line {
    gap: 24px;
  }

  .meta-line span {
    font-size: 12px;
  }

  .meta-line span + span::before {
    left: -14px;
  }

  .intro {
    height: 892px;
  }

  .intro .body-text {
    top: -20px;
    width: 726px;
    margin-bottom: 24px;
    font-size: 16px;
  }

  .luna-stage {
    width: 720px;
    height: 560px;
    margin: -40px auto 0;
  }

  .luna-stage .intro-platform {
    top: 286px;
    left: 50%;
    width: 506px;
    height: 226px;
    transform: translateX(-50%);
  }

  .luna-stage .luna-main {
    top: 34px;
    width: 204px;
    height: 342px;
  }

  .luna-stage article {
    width: 200px;
    min-height: 109px;
    padding: 16px;
    border: 0;
    background: linear-gradient(216.69deg, rgba(255, 255, 255, 0.6) 26.73%, rgba(255, 255, 255, 0.1) 97.91%);
    box-shadow: 0 16px 28px rgba(0, 0, 0, 0.03);
    backdrop-filter: blur(25px);
  }

  .luna-stage article:nth-of-type(1) {
    top: 64px;
    right: 60px;
    background: linear-gradient(216.69deg, rgba(255, 255, 255, 0.6) 26.73%, rgba(255, 255, 255, 0.1) 97.91%);
  }

  .luna-stage article:nth-of-type(2) {
    top: 150px;
    left: 65px;
    background: linear-gradient(85.59deg, rgba(255, 255, 255, 0.6) 2.32%, rgba(255, 255, 255, 0.1) 98.73%);
  }

  .luna-stage article:nth-of-type(3) {
    top: 229px;
    right: 105px;
    background: linear-gradient(-80.08deg, rgba(255, 255, 255, 0.6) 5.72%, rgba(255, 255, 255, 0.1) 96.33%);
  }

  .luna-stage h3 {
    font-size: 20px;
  }

  .luna-stage article p {
    font-size: 14px;
  }

  .luna-stage .quote {
    top: 432px;
    width: 430px;
    font-size: 16px;
  }

  .team {
    display: block;
    height: 796px;
    background: #fff;
  }

  .team .section-heading {
    position: absolute;
    top: 100px;
    left: 50%;
    width: 100%;
    margin: 0;
    transform: translateX(-50%);
  }

  .team .gradient-heading--team br {
    display: none;
  }

  .team .desktop-break {
    display: initial;
  }

  .team-content {
    --team-gap: 61px;
    --team-text-width: 539px;
    --team-image-width: clamp(376px, calc(100% - var(--team-text-width) - var(--team-gap)), 600px);
    position: absolute;
    top: 276px;
    left: 50%;
    display: block;
    width: min(1200px, calc(100% - 48px));
    height: 404px;
    transform: translateX(-50%);
  }

  .team-image {
    position: absolute;
    top: 0;
    left: 0;
    width: var(--team-image-width);
    aspect-ratio: 600 / 400;
    margin: 0;
  }

  .team .body-text {
    position: absolute;
    left: calc(var(--team-image-width) + var(--team-gap));
    width: 539px;
    margin: 0;
    font-size: 20px;
    line-height: 1.6;
    text-align: left;
  }

  .team .body-text:nth-of-type(1) {
    top: 0;
  }

  .team .body-text + .body-text {
    top: 124px;
    margin-top: 0;
  }

  .team-proof-line {
    position: absolute;
    top: 260px;
    left: calc(var(--team-image-width) + var(--team-gap));
    display: block;
    width: 28px;
    height: 1px;
    margin: 0;
    background: rgba(61, 65, 102, 0.4);
  }

  .team-metrics {
    position: absolute;
    top: 319px;
    left: calc(var(--team-image-width) + var(--team-gap));
    display: flex;
    gap: 80px;
    margin: 0;
  }

  .team-metrics div {
    display: grid;
    gap: 12px;
    min-width: 104px;
  }

  .team-metrics span {
    color: rgba(61, 65, 102, 0.6);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.3;
    letter-spacing: 0.5px;
  }

  .team-metrics strong {
    color: #3d4166;
    font-family: var(--font-en);
    font-size: 40px;
    font-weight: 700;
    line-height: 1.3;
  }

  .team-metrics small {
    font-family: var(--font-title);
    font-size: 16px;
    font-weight: 400;
  }

  .why {
    height: 1392px;
  }

  .why .primary-button.why-cta {
    position: absolute;
    top: 1256px;
    left: 50%;
    bottom: auto;
    display: flex;
    width: 280px;
    height: 56px;
    min-height: 56px;
    margin: 0;
    border: 0;
    transform: translateX(-50%);
    box-shadow:
      inset 0 0 8px rgba(255, 255, 255, 0.6),
      inset 0 -20px 28px rgba(255, 255, 255, 0.16),
      0 12px 12px rgba(0, 92, 92, 0.2);
  }

  .comparison-grid {
    display: block;
    width: min(100%, 1020px);
    height: auto;
    margin-bottom: 84px;
  }

  .comparison-slice {
    display: block;
    width: 100%;
    height: auto;
  }

  .comparison-grid .problem-card,
  .comparison-grid .solution-card {
    display: none;
  }

  .problem-card::before,
  .solution-card::after {
    top: 14px;
    left: calc(50% - 178px);
    right: auto;
    font-size: 28px;
    transform: none;
  }

  .solution-card::after {
    left: calc(50% + 220px);
  }

  .comparison-grid h3 {
    position: absolute;
    top: 18px;
    left: 0;
    width: 100%;
    margin: 0;
    font-size: 20px;
    line-height: 1.2;
  }

  .problem-card h3 {
    font-size: 20px;
  }

  .solution-card h3 {
    font-size: 20px;
  }

  .comparison-grid .icon-list {
    display: grid;
    justify-content: center;
    gap: 24px;
  }

  .problem-card .icon-list {
    grid-template-columns: repeat(5, 120px);
  }

  .solution-card .icon-list {
    grid-template-columns: repeat(5, 160px);
  }

  .icon-list li,
  .solution-card .icon-list li {
    display: grid;
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 8px;
    min-height: 84px;
    padding: 0;
    font-size: 14px;
    line-height: 1.7;
    text-align: center;
  }

  .problem-card .icon-list li + li {
    padding-top: 0;
    border-top: 0;
  }

  .icon-list img {
    width: 28px;
    height: 28px;
  }

  .feature-strip-shell {
    position: relative;
    width: 100vw;
    max-width: none;
    margin-left: calc(50% - 50vw);
    overflow: visible;
    --feature-control-offset: max(24px, calc(var(--page-gutter) - 64px));
  }

  .feature-strip {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 320px;
    gap: 20px;
    width: 100%;
    max-width: none;
    margin-left: 0;
    padding: 0 var(--page-gutter) 10px;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    scroll-padding-inline: var(--page-gutter);
    scroll-snap-type: x mandatory;
  }

  .feature-control {
    position: absolute;
    z-index: 5;
    top: 50%;
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border: 0;
    border-radius: 999px;
    color: rgba(61, 65, 102, 0.68);
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 12px 24px rgba(30, 41, 80, 0.08);
    cursor: pointer;
    transform: translateY(-50%);
  }

  .feature-control span {
    display: block;
    font-family: Arial, sans-serif;
    font-size: 38px;
    line-height: 1;
    transform: translateY(-2px);
  }

  .feature-control--prev {
    left: var(--feature-control-offset);
  }

  .feature-control--next {
    right: var(--feature-control-offset);
  }

  .feature-strip article {
    flex-basis: auto;
    min-height: 450px;
    border-radius: 16px;
  }

  .feature-strip article div {
    padding: 24px 20px 0;
  }

  .feature-strip .feature-label {
    gap: 8px;
    margin-bottom: 16px;
    font-size: 10px;
  }

  .feature-strip .feature-label span + span {
    gap: 8px;
  }

  .feature-strip .feature-label span + span::before {
    position: static;
    display: block;
    flex: 0 0 1px;
    width: 1px;
    height: 10px;
    margin: 0;
    content: "";
    background: rgba(61, 65, 102, 0.28);
    transform: none;
  }

  .feature-strip h3 {
    font-size: 28px;
    line-height: 1.35;
  }

  .feature-strip .feature-copy {
    font-size: 16px;
    line-height: 1.6;
  }

  .feature-strip img {
    width: 280px;
    height: 186px;
    margin: 0 auto;
    object-fit: cover;
  }

  .interaction {
    position: relative;
    display: block;
    height: 668px;
    padding: 0 var(--page-gutter);
    background: #7580e5;
    overflow: hidden;
  }

  .interaction .section-heading {
    position: absolute;
    top: 207px;
    right: var(--page-gutter);
    width: 405px;
    margin: 0;
  }

  .interaction .media-frame {
    --interaction-frame-pad: min(12px, 1vw);
    --interaction-frame-gap: min(24px, 2vw);
    position: absolute;
    top: 140px;
    left: var(--page-gutter);
    width: min(724px, calc(100vw - (var(--page-gutter) * 2) - 405px - 48px));
    height: auto;
    aspect-ratio: 724 / 388;
    border-radius: min(24px, 2vw);
  }

  .interaction .media-frame > img:not(.sound-icon) {
    content: url("https://cn-ai.lingo-ace.com/official-website/assets/png/pc-interaction.png");
    border-radius: min(16px, 1.3333vw);
  }

  .interaction .media-frame > video {
    width: calc(100% - var(--interaction-frame-gap));
    height: calc(100% - var(--interaction-frame-gap));
    border-radius: min(16px, 1.3333vw);
    object-fit: cover;
  }

  .video-sound-toggle {
    right: min(24px, 2vw);
    bottom: min(24px, 2vw);
    width: 44px;
    height: 44px;
  }

  .video-sound-toggle .sound-icon {
    width: 24px;
    height: 24px;
  }

  .interaction .primary-button.compact {
    top: auto;
    left: auto;
    right: calc(var(--page-gutter) + 62.5px);
    bottom: 207px;
    width: 280px;
    height: 56px;
    margin: 0;
  }

  .backed {
    height: 1120px;
    background: #fff;
  }

  .backed-heading h2 img {
    width: 135px;
    height: 46px;
  }

  .backed-heading > p:last-child {
    margin: 8px auto 0;
    width: fit-content;
    color: rgba(61, 65, 102, 0.6);
    font-family: var(--font-title);
    font-size: 12px;
    line-height: 16px;
    letter-spacing: 0;
    white-space: nowrap;
  }

  .map-frame {
    width: 880px;
    height: 440px;
    margin: 40px auto 0;
  }

  .award-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    width: 1000px;
    margin: 40px auto 0;
    overflow: visible;
    border: 0;
    background: transparent;
    box-shadow: none;
  }

  .award-grid article {
    min-height: 162px;
    border: 0.5px solid #1d9bfd;
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(29, 155, 253, 0.1), rgba(29, 155, 253, 0));
  }

  .award-grid article + article {
    border-left: 0.5px solid #1d9bfd;
  }

  .award-grid img {
    height: 50px;
  }

  .award-grid span {
    font-size: 16px;
  }

  .media-logo-row {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    width: 1000px;
    margin: 40px auto 0;
  }

  .media-logo-row span {
    height: 80px;
    border-radius: 16px;
  }

  .media-logo-row span:nth-child(3),
  .media-logo-row span:nth-child(4) {
    padding: 6px 10px;
  }

  .media-logo-row img {
    max-width: none;
    max-height: none;
    object-fit: contain;
  }

  .media-logo-row span:nth-child(1) img {
    width: 148px;
    height: 20px;
    content: url("https://cn-ai.lingo-ace.com/official-website/assets/png/media-logo-tencent-3x.png");
  }

  .media-logo-row span:nth-child(2) img {
    width: 150px;
    height: 40px;
    content: url("https://cn-ai.lingo-ace.com/official-website/assets/png/media-logo-chinadaily-3x.png");
  }

  .media-logo-row span:nth-child(3) img {
    width: 99px;
    height: 44px;
    content: url("https://cn-ai.lingo-ace.com/official-website/assets/png/media-logo-xinhua-cropped-3x.png");
  }

  .media-logo-row span:nth-child(4) img {
    width: auto;
    height: 44px;
    content: url("https://cn-ai.lingo-ace.com/official-website/assets/png/media-logo-sina-cropped-3x.png");
  }

  .download {
    height: 753px;
  }

  .download-row {
    grid-template-columns: 190px 256px;
    align-items: center;
    gap: 11px;
    width: 457px;
    margin-top: 60px;
  }

  .teacher-small {
    width: 190px;
    height: 375px;
  }

  .qr-card {
    width: 256px;
    padding: 8px;
  }

  .qr-card img {
    width: 240px;
    height: 240px;
    border-radius: 16px;
  }

  .qr-card span {
    font-size: 14px;
  }

  .footer {
    position: relative;
    height: 339px;
    padding: 80px 20px 20px;
  }

  .footer h2 {
    font-size: 28px;
  }

  .socials {
    gap: 40px;
    margin: 20px 0 52px;
  }

  .socials a {
    width: 56px;
    height: 56px;
  }

  .socials .social-redbook-icon {
    width: 42px;
    height: 42px;
  }

  .legal-links {
    position: absolute;
    bottom: 52px;
    left: 50%;
    flex-direction: row;
    flex-wrap: nowrap;
    justify-content: center;
    align-items: center;
    gap: 0;
    width: fit-content;
    max-width: min(1200px, calc(100% - 40px));
    margin-bottom: 0;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.2;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    letter-spacing: 0.5px;
    transform: translateX(-50%);
  }

  .legal-links-row {
    display: contents;
  }

  .legal-links-divider {
    display: block;
    flex: 0 0 1px;
    width: 1px;
    height: 16px;
    margin: 0 20px;
    background: rgba(255, 255, 255, 0.1);
  }

  .legal-links-divider--desktop {
    display: block;
  }

  .legal-links a {
    display: block;
    padding: 0;
    white-space: nowrap;
  }

  .legal-links a + a::before {
    content: none;
  }

  .footer p {
    position: absolute;
    bottom: 20px;
    left: 50%;
    width: min(1200px, calc(100% - 40px));
    margin-bottom: 0;
    font-family: var(--font-en);
    font-size: 14px;
    line-height: 1.4;
    color: rgba(255, 255, 255, 0.4);
    text-align: center;
    white-space: nowrap;
    transform: translateX(-50%);
  }
}