:root {
  color-scheme: light;
  --bg: #f6f7f4;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: rgba(255, 255, 255, 0.92);
  --text: #191b1f;
  --muted: #6c7077;
  --line: rgba(25, 27, 31, 0.1);
  --accent: #0077ff;
  --accent-dark: #005fd1;
  --shadow: 0 34px 90px rgba(26, 38, 55, 0.12);
  --radius-xl: 42px;
  --radius-lg: 30px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(circle at 76% 10%, rgba(0, 119, 255, 0.1), transparent 32vw),
    linear-gradient(180deg, #fbfbf8 0%, var(--bg) 52%, #f0f4f7 100%);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

.site-header {
  position: fixed;
  z-index: 20;
  top: max(18px, env(safe-area-inset-top));
  left: 50%;
  width: min(calc(100% - 32px), var(--max));
  height: 64px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.66);
  border-radius: 999px;
  background: rgba(248, 249, 247, 0.72);
  box-shadow: 0 18px 50px rgba(25, 35, 48, 0.08);
  backdrop-filter: blur(22px) saturate(1.2);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: 0 10px 22px rgba(13, 31, 55, 0.18);
}

.brand-text {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-size: 18px;
  font-weight: 720;
  line-height: 1;
  letter-spacing: -0.02em;
}

.brand-subtitle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
  line-height: 1;
  letter-spacing: 0;
}

.brand-subtitle::before {
  content: "";
  width: 4px;
  height: 4px;
  border-radius: 999px;
  background: currentColor;
  opacity: 0.62;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(25, 27, 31, 0.72);
  font-size: 14px;
  font-weight: 650;
}

.nav-actions a,
.language-select {
  border: 0;
  border-radius: 999px;
  padding: 10px 14px;
  color: inherit;
  background: transparent;
  font: inherit;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.nav-actions a:hover,
.language-select:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.76);
}

.language-select {
  max-width: 132px;
  appearance: none;
  color: #1b1d21;
  background:
    linear-gradient(45deg, transparent 50%, currentColor 50%) right 14px center / 5px 5px no-repeat,
    linear-gradient(135deg, currentColor 50%, transparent 50%) right 9px center / 5px 5px no-repeat,
    rgba(255, 255, 255, 0.74);
  padding-right: 28px;
}

.language-select:hover {
  transform: translateY(-1px);
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(320px, 0.82fr) minmax(420px, 1.18fr);
  align-items: center;
  gap: 5vw;
  padding: 138px max(28px, calc((100vw - var(--max)) / 2)) 88px;
  overflow: hidden;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 610px;
}

.eyebrow {
  margin: 0 0 20px;
  color: var(--accent);
  font-size: 18px;
  font-weight: 820;
  letter-spacing: 0.01em;
}

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

h1 {
  margin-bottom: 24px;
  font-size: clamp(40px, 5.4vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.05em;
  max-width: 700px;
  text-wrap: balance;
}

.hero-text {
  max-width: 520px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: clamp(17px, 1.7vw, 20px);
  line-height: 1.45;
  letter-spacing: -0.02em;
}

.hero-actions,
.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 720;
  letter-spacing: -0.01em;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.button.primary {
  color: #fff;
  background: linear-gradient(180deg, var(--accent), var(--accent-dark));
  box-shadow: 0 16px 38px rgba(0, 119, 255, 0.26);
}

.button.secondary {
  border: 1px solid rgba(25, 27, 31, 0.1);
  background: rgba(255, 255, 255, 0.72);
}

.button:hover {
  transform: translateY(-2px);
}

.button:active {
  transform: translateY(0) scale(0.98);
}

.hero-stage {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-shot {
  position: relative;
  width: min(100%, 860px);
  height: auto;
  aspect-ratio: 1400 / 788;
  object-fit: contain;
  border-radius: 36px;
  box-shadow: 0 34px 90px rgba(26, 38, 55, 0.11);
  transform: translateY(0);
  will-change: transform;
}

.orb {
  display: none;
}

.orb-blue {
  top: 6%;
  right: 9%;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(0, 119, 255, 0.24), rgba(0, 119, 255, 0));
}

.orb-mint {
  bottom: 0;
  left: 10%;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(79, 213, 171, 0.22), rgba(79, 213, 171, 0));
}

.statement {
  width: min(calc(100% - 48px), 980px);
  margin: 0 auto;
  padding: 86px 0 104px;
  text-align: center;
}

.statement p {
  margin: 0;
  color: #24272c;
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 720;
  line-height: 1.08;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.feature-canvas {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: 42px;
  align-items: start;
  padding: 0;
  border: 0;
}

.feature-intro {
  min-height: 560px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 42px 0;
}

.feature-intro h2 {
  max-width: 520px;
  margin: 0;
  font-size: clamp(36px, 4.7vw, 62px);
  line-height: 1.02;
  letter-spacing: -0.052em;
  text-wrap: balance;
}

.feature-stack {
  display: grid;
  gap: 12px;
  padding: 18px 0;
}

.feature {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) 148px;
  gap: 20px;
  align-items: start;
  padding: 20px 22px;
  overflow: hidden;
  border: 1px solid rgba(25, 27, 31, 0.055);
  border-radius: 26px;
  background: rgba(255, 255, 255, 0.48);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.62);
  transition: transform 220ms ease, background 220ms ease, border-color 220ms ease;
}

.feature:hover {
  transform: translateX(4px);
  border-color: rgba(0, 119, 255, 0.14);
  background: rgba(255, 255, 255, 0.72);
}

.feature-index {
  display: inline-flex;
  padding-top: 5px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.feature h3 {
  margin: 0 0 8px;
  font-size: clamp(23px, 2.1vw, 30px);
  line-height: 1;
  letter-spacing: -0.04em;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.5;
}

.feature-copy {
  min-width: 0;
}

.feature-copy p {
  text-wrap: balance;
}

.feature-visual {
  position: relative;
  align-self: center;
  height: 76px;
  border: 1px solid rgba(25, 27, 31, 0.08);
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 255, 255, 0.42));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.78);
  overflow: hidden;
}

.feature-visual span {
  position: absolute;
  display: block;
  border-radius: 999px;
  background: rgba(0, 119, 255, 0.16);
}

.history-visual span:nth-child(1) {
  left: 18px;
  top: 17px;
  width: 92px;
  height: 8px;
}

.history-visual span:nth-child(2) {
  left: 18px;
  top: 34px;
  width: 66px;
  height: 8px;
  background: rgba(25, 27, 31, 0.12);
}

.history-visual span:nth-child(3) {
  left: 18px;
  top: 51px;
  width: 104px;
  height: 8px;
  background: rgba(25, 27, 31, 0.09);
}

.search-visual::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 20px;
  width: 26px;
  height: 26px;
  border: 3px solid rgba(0, 119, 255, 0.42);
  border-radius: 999px;
}

.search-visual::after {
  content: "";
  position: absolute;
  left: 42px;
  top: 45px;
  width: 18px;
  height: 3px;
  border-radius: 999px;
  background: rgba(0, 119, 255, 0.42);
  transform: rotate(45deg);
}

.search-visual span:nth-child(1) {
  left: 70px;
  top: 24px;
  width: 58px;
  height: 7px;
}

.search-visual span:nth-child(2) {
  left: 70px;
  top: 41px;
  width: 42px;
  height: 7px;
  background: rgba(25, 27, 31, 0.1);
}

.sync-visual span:nth-child(1) {
  left: 18px;
  top: 18px;
  width: 28px;
  height: 42px;
  border-radius: 9px;
  background: rgba(25, 27, 31, 0.1);
}

.sync-visual span:nth-child(2) {
  left: 62px;
  top: 35px;
  width: 34px;
  height: 6px;
}

.sync-visual span:nth-child(3) {
  right: 18px;
  top: 20px;
  width: 38px;
  height: 36px;
  border-radius: 12px;
  background: rgba(0, 119, 255, 0.16);
}

.filter-visual span {
  width: 42px;
  height: 24px;
  top: 26px;
}

.filter-visual span:nth-child(1) {
  left: 16px;
}

.filter-visual span:nth-child(2) {
  left: 62px;
  background: rgba(25, 27, 31, 0.1);
}

.filter-visual span:nth-child(3) {
  left: 108px;
  width: 28px;
  background: rgba(25, 27, 31, 0.08);
}

.experience-visual span {
  top: 21px;
  width: 34px;
  height: 34px;
}

.experience-visual span:nth-child(1) {
  left: 18px;
}

.experience-visual span:nth-child(2) {
  left: 58px;
  background: rgba(25, 27, 31, 0.1);
}

.experience-visual span:nth-child(3) {
  left: 98px;
  background: rgba(25, 27, 31, 0.08);
}

.showcase {
  width: min(calc(100% - 48px), var(--max));
  margin: 128px auto 0;
}

.showcase-copy {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: end;
  margin-bottom: 36px;
}

.showcase-copy h2 {
  margin: 0;
  font-size: clamp(34px, 4.8vw, 60px);
  line-height: 1.02;
  letter-spacing: -0.052em;
  text-wrap: balance;
}

.showcase-grid {
  display: none;
}

.product-showcase {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.62);
  border-radius: 40px;
  background: var(--surface);
  box-shadow: 0 28px 80px rgba(26, 38, 55, 0.1);
}

.product-showcase img {
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: top center;
}

.product-showcase figcaption {
  position: absolute;
  left: 22px;
  bottom: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.product-showcase figcaption span {
  padding: 9px 13px;
  border-radius: 999px;
  color: rgba(25, 27, 31, 0.72);
  background: rgba(255, 255, 255, 0.76);
  backdrop-filter: blur(18px);
  font-size: 13px;
  font-weight: 720;
}

.download {
  width: min(calc(100% - 48px), 960px);
  margin: 126px auto 72px;
  padding: 72px min(8vw, 92px);
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: 52px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.62));
  box-shadow: 0 34px 90px rgba(26, 38, 55, 0.1);
  backdrop-filter: blur(24px);
}

.download img {
  width: 84px;
  height: 84px;
  margin: 0 auto 26px;
  border-radius: 20px;
  box-shadow: 0 18px 40px rgba(13, 31, 55, 0.18);
}

.download h2 {
  max-width: 680px;
  margin: 0 auto 18px;
  font-size: clamp(34px, 4.8vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.052em;
  text-wrap: balance;
}

.download p:not(.eyebrow) {
  max-width: 560px;
  margin: 0 auto 30px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

.download-actions {
  justify-content: center;
}

.site-footer {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  padding: 30px 0 46px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
  justify-content: space-between;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
  border-top: 1px solid var(--line);
}

.footer-contact {
  display: grid;
  gap: 2px;
}

.footer-contact strong,
.footer-links strong {
  color: var(--text);
  font-size: 15px;
  font-weight: 720;
}

.footer-contact a,
.footer-links a {
  width: fit-content;
  transition: color 180ms ease;
}

.footer-contact a:hover,
.footer-links a:hover {
  color: var(--accent);
}

.footer-links {
  display: grid;
  gap: 6px;
}

.footer-links div {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
}

.footer-social {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.footer-social a,
.social-button {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.56);
  font-family: inherit;
  font-size: 13px;
  font-weight: 680;
  cursor: pointer;
  transition: transform 180ms ease, background 180ms ease;
}

.footer-social a:hover,
.social-button:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.88);
}

.social-disabled {
  cursor: default;
  opacity: 0.48;
}

.social-disabled:hover {
  transform: none;
  background: rgba(255, 255, 255, 0.56);
}

.wechat-popover {
  position: fixed;
  z-index: 60;
  left: 0;
  top: 0;
  opacity: 0;
  pointer-events: none;
  transform: translate3d(-50%, -100%, 0) translateY(-14px);
  transition: opacity 160ms ease, transform 180ms cubic-bezier(0.2, 0.9, 0.2, 1);
}

.wechat-popover.open {
  opacity: 1;
  pointer-events: auto;
  transform: translate3d(-50%, -100%, 0) translateY(-20px);
}

.wechat-card {
  position: relative;
  width: 300px;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 28px;
  text-align: center;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 24px 70px rgba(12, 15, 20, 0.18);
  backdrop-filter: blur(18px) saturate(1.08);
}

.wechat-card::after {
  content: "";
  position: absolute;
  left: var(--pointer-left, 50%);
  bottom: -9px;
  width: 18px;
  height: 18px;
  background: rgba(255, 255, 255, 0.92);
  border-right: 1px solid rgba(255, 255, 255, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.72);
  transform: translateX(-50%) rotate(45deg);
}

.wechat-title {
  margin: 0 0 14px;
  color: var(--text);
  font-size: 15px;
  font-weight: 760;
}

.wechat-qr-placeholder {
  width: 220px;
  height: 220px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  border: 1px dashed rgba(25, 27, 31, 0.22);
  border-radius: 22px;
  color: var(--muted);
  background:
    linear-gradient(90deg, rgba(25, 27, 31, 0.08) 10px, transparent 10px) 0 0 / 28px 28px,
    linear-gradient(rgba(25, 27, 31, 0.08) 10px, transparent 10px) 0 0 / 28px 28px,
    rgba(255, 255, 255, 0.72);
  font-size: 28px;
  font-weight: 760;
}

.wechat-qr-placeholder.has-image {
  border-style: solid;
  background: #fff;
}

.wechat-qr-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 16px;
}

.wechat-note {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 620ms ease, transform 620ms cubic-bezier(0.2, 0.9, 0.2, 1);
  will-change: opacity, transform;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
  will-change: auto;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #090b0f;
    --surface: rgba(31, 34, 39, 0.78);
    --surface-strong: rgba(37, 40, 46, 0.92);
    --text: #f5f7fb;
    --muted: #a5abb5;
    --line: rgba(245, 247, 251, 0.12);
    --shadow: 0 34px 90px rgba(0, 0, 0, 0.42);
  }

  body {
    background:
      radial-gradient(circle at 74% 8%, rgba(0, 119, 255, 0.18), transparent 34vw),
      linear-gradient(180deg, #10131a 0%, var(--bg) 58%, #0b1118 100%);
  }

  .site-header,
  .button.secondary,
  .language-select,
  .product-showcase figcaption span {
    background: rgba(28, 30, 34, 0.72);
  }

  .feature-visual {
    border-color: rgba(245, 247, 251, 0.1);
    background: rgba(245, 247, 251, 0.05);
  }

  .feature {
    border-color: rgba(245, 247, 251, 0.08);
    background: rgba(245, 247, 251, 0.035);
  }

  .feature:hover {
    border-color: rgba(0, 119, 255, 0.22);
    background: rgba(245, 247, 251, 0.06);
  }

  .statement p {
    color: var(--text);
  }

  .download {
    background: linear-gradient(180deg, rgba(31, 34, 39, 0.92), rgba(20, 23, 29, 0.72));
  }

  .language-select {
    color: var(--text);
  }

  .footer-social a,
  .social-button {
    background: rgba(245, 247, 251, 0.06);
  }

  .social-disabled:hover {
    background: rgba(245, 247, 251, 0.06);
  }

  .wechat-card {
    background: rgba(31, 34, 39, 0.94);
    border-color: rgba(255, 255, 255, 0.14);
  }

  .wechat-card::after {
    background: rgba(31, 34, 39, 0.94);
    border-color: rgba(255, 255, 255, 0.14);
  }

  .wechat-qr-placeholder {
    border-color: rgba(245, 247, 251, 0.18);
    background:
      linear-gradient(90deg, rgba(245, 247, 251, 0.1) 10px, transparent 10px) 0 0 / 28px 28px,
      linear-gradient(rgba(245, 247, 251, 0.1) 10px, transparent 10px) 0 0 / 28px 28px,
      rgba(255, 255, 255, 0.04);
  }
}

@media (max-width: 980px) {
  .site-header {
    width: min(calc(100% - 28px), 720px);
    height: auto;
    min-height: 64px;
    padding: 12px 14px;
    border-radius: 28px;
  }

  .brand img {
    width: 38px;
    height: 38px;
  }

  .brand-text {
    flex-wrap: wrap;
    row-gap: 4px;
  }

  .nav-actions {
    gap: 6px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 42px;
    padding-top: 146px;
  }

  .hero-stage {
    min-height: auto;
  }

  .hero-shot {
    width: 100%;
    max-width: 900px;
  }

  .feature-canvas,
  .showcase-copy {
    grid-template-columns: 1fr;
  }

  .feature-intro {
    min-height: auto;
    gap: 22px;
    padding: 24px 0 6px;
  }

  .feature {
    min-height: auto;
    grid-template-columns: 42px 1fr;
    gap: 14px 18px;
    padding: 20px;
  }

  .feature-visual {
    grid-column: 2;
    width: min(100%, 240px);
  }

  .showcase-copy {
    gap: 18px;
    margin-bottom: 26px;
  }

  .site-footer {
    gap: 18px 28px;
    flex-wrap: wrap;
  }

  .footer-contact {
    flex: 1 1 100%;
  }

  .footer-links,
  .footer-social {
    flex: 1 1 260px;
  }
}

@media (max-width: 640px) {
  .site-header {
    top: max(10px, env(safe-area-inset-top));
    left: 16px;
    right: 16px;
    width: auto;
    transform: none;
    display: grid;
    gap: 10px;
    justify-content: stretch;
    padding: 12px;
    border-radius: 26px;
  }

  .brand {
    justify-content: space-between;
    gap: 12px;
  }

  .brand img {
    width: 36px;
    height: 36px;
  }

  .brand span {
    display: inline-flex;
  }

  .brand-subtitle {
    display: none;
  }

  .brand-text {
    font-size: 17px;
  }

  .nav-actions {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
    font-size: 13px;
  }

  .nav-actions a,
  .language-select {
    min-height: 40px;
    padding: 9px 12px;
  }

  .language-select {
    flex: 0 0 110px;
    max-width: 110px;
    margin-left: auto;
    padding-right: 28px;
  }

  .hero {
    gap: 26px;
    padding: 136px 20px 54px;
  }

  h1 {
    margin-bottom: 18px;
    font-size: clamp(34px, 10vw, 46px);
  }

  .eyebrow {
    margin-bottom: 14px;
    font-size: 17px;
  }

  .hero-text {
    margin-bottom: 24px;
    font-size: 16px;
    line-height: 1.55;
  }

  .hero-actions,
  .download-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
    min-height: 46px;
  }

  .hero-stage {
    min-height: auto;
  }

  .hero-shot {
    width: 100%;
    border-radius: 22px;
  }


  .statement,
  .feature-canvas,
  .showcase,
  .download,
  .site-footer {
    width: calc(100% - 32px);
  }

  .statement {
    padding: 52px 0 64px;
  }

  .statement p {
    font-size: clamp(24px, 8vw, 36px);
    line-height: 1.12;
  }

  .showcase {
    margin-top: 84px;
  }

  .feature {
    grid-template-columns: 38px 1fr;
    gap: 14px 14px;
    padding: 18px;
    border-radius: 22px;
  }

  .feature h3 {
    margin-bottom: 6px;
    font-size: 22px;
    line-height: 1.06;
  }

  .feature p {
    font-size: 14px;
    line-height: 1.5;
  }

  .feature-visual {
    grid-column: 2;
    width: min(100%, 248px);
    height: 54px;
    margin-top: 4px;
    justify-self: start;
  }

  .history-visual span:nth-child(1) {
    left: 50%;
    top: 12px;
    width: 92px;
    transform: translateX(-50%);
  }

  .history-visual span:nth-child(2) {
    left: 50%;
    top: 25px;
    width: 66px;
    transform: translateX(-50%);
  }

  .history-visual span:nth-child(3) {
    left: 50%;
    top: 38px;
    width: 104px;
    transform: translateX(-50%);
  }

  .search-visual::before {
    left: 50%;
    top: 12px;
    transform: translateX(-48px);
  }

  .search-visual::after {
    left: 50%;
    top: 37px;
    transform: translateX(-18px) rotate(45deg);
  }

  .search-visual span:nth-child(1) {
    left: 50%;
    top: 18px;
    width: 58px;
    transform: translateX(8px);
  }

  .search-visual span:nth-child(2) {
    left: 50%;
    top: 31px;
    width: 42px;
    transform: translateX(8px);
  }

  .sync-visual span:nth-child(1) {
    left: 50%;
    top: 10px;
    transform: translateX(-60px);
  }

  .sync-visual span:nth-child(2) {
    left: 50%;
    top: 24px;
    transform: translateX(-17px);
  }

  .sync-visual span:nth-child(3) {
    left: 50%;
    right: auto;
    top: 11px;
    transform: translateX(22px);
  }

  .filter-visual span:nth-child(1) {
    left: 50%;
    top: 15px;
    transform: translateX(-66px);
  }

  .filter-visual span:nth-child(2) {
    left: 50%;
    top: 15px;
    transform: translateX(-16px);
  }

  .filter-visual span:nth-child(3) {
    left: 50%;
    top: 15px;
    transform: translateX(34px);
  }

  .experience-visual span:nth-child(1) {
    left: 50%;
    top: 10px;
    transform: translateX(-57px);
  }

  .experience-visual span:nth-child(2) {
    left: 50%;
    top: 10px;
    transform: translateX(-17px);
  }

  .experience-visual span:nth-child(3) {
    left: 50%;
    top: 10px;
    transform: translateX(23px);
  }

  .feature-intro h2,
  .showcase-copy h2,
  .download h2 {
    font-size: clamp(28px, 8.6vw, 40px);
    line-height: 1.05;
  }

  .product-showcase {
    border-radius: 28px;
  }

  .product-showcase figcaption {
    left: 14px;
    right: 14px;
    bottom: 14px;
    gap: 6px;
  }

  .product-showcase figcaption span {
    padding: 8px 10px;
    font-size: 12px;
  }

  .download {
    margin-top: 88px;
    padding: 52px 22px;
    border-radius: 34px;
  }

  .download img {
    width: 72px;
    height: 72px;
    margin-bottom: 22px;
  }

  .download p:not(.eyebrow) {
    font-size: 15px;
  }

  .site-footer {
    flex-direction: column;
    gap: 14px;
    padding-bottom: 32px;
  }

  .footer-contact,
  .footer-links,
  .footer-social {
    flex: 0 0 auto;
  }

  .footer-links,
  .footer-social {
    width: 100%;
  }

  .footer-social {
    justify-content: flex-start;
  }

  .footer-social a,
  .social-button {
    min-height: 36px;
  }

  .wechat-card {
    width: min(calc(100vw - 24px), 300px);
    padding: 18px;
    border-radius: 24px;
  }

  .wechat-qr-placeholder {
    width: min(220px, calc(100vw - 96px));
    height: min(220px, calc(100vw - 96px));
    margin-bottom: 12px;
  }
}

@media (max-width: 520px) {
  .site-header {
    gap: 8px;
    padding: 10px;
  }

  .brand {
    gap: 10px;
  }

  .brand-text {
    font-size: 16px;
  }

  .nav-actions {
    gap: 6px;
    font-size: 12px;
  }

  .nav-actions a,
  .language-select {
    min-height: 38px;
    padding: 8px 11px;
  }

  .language-select {
    flex-basis: 104px;
    max-width: 104px;
  }

  .hero {
    gap: 22px;
    padding-top: 132px;
    padding-bottom: 48px;
  }

  .hero-text {
    max-width: none;
  }

  .statement {
    padding-top: 46px;
    padding-bottom: 56px;
  }

  .feature-stack {
    gap: 10px;
  }

  .feature-intro {
    padding-top: 18px;
  }

  .download {
    margin-top: 78px;
    padding: 46px 18px;
  }

  .site-footer {
    font-size: 13px;
  }
}

@media (max-width: 420px) {
  .site-header {
    left: 12px;
    right: 12px;
  }

  .nav-actions {
    gap: 6px;
    font-size: 12px;
  }

  .nav-actions a,
  .language-select {
    padding: 8px 10px;
  }

  .language-select {
    flex-basis: 102px;
    max-width: 102px;
  }

  .hero,
  .statement,
  .feature-canvas,
  .showcase,
  .download,
  .site-footer {
    width: calc(100% - 24px);
  }

  .hero {
    padding-left: 12px;
    padding-right: 12px;
  }

  .feature {
    padding: 16px;
  }

  .feature-visual {
    width: min(100%, 232px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}