:root {
  --ink: #050505;
  --muted: #5f6368;
  --soft: #f5f5f7;
  --line: rgba(0, 0, 0, 0.11);
  --white: #ffffff;
  --accent: #80f180;
  --accent-blue: #5bc8ff;
  --panel: #111314;
  --radius: 8px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  letter-spacing: 0;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  height: 82px;
  padding: 0 28px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1;
}

.brand-logo {
  width: 60px;
  height: 60px;
  object-fit: contain;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  order: 2;
  margin-left: auto;
}

.site-nav a {
  min-width: 78px;
  padding: 10px 14px;
  border-radius: 999px;
  color: rgba(0, 0, 0, 0.62);
  font-size: 0.92rem;
  text-align: center;
  transition: color 180ms ease, background 180ms ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--ink);
  background: rgba(0, 0, 0, 0.06);
}

.nav-toggle {
  display: none;
  order: 4;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 50%;
  color: var(--ink);
  background: transparent;
}

.language-switch {
  order: 3;
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.04);
}

.language-switch button {
  min-width: 42px;
  height: 30px;
  border: 0;
  border-radius: 999px;
  color: rgba(0, 0, 0, 0.56);
  background: transparent;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
}

.language-switch button.is-active {
  color: #fff;
  background: #0071e3;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
  transition: transform 180ms ease;
}

.hero,
.page-hero {
  position: relative;
  overflow: hidden;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 24px;
  min-height: min(640px, calc(100vh - 110px));
  padding: 88px max(36px, calc((100% - var(--max)) / 2)) 60px;
  background:
    radial-gradient(circle at 78% 28%, rgba(91, 200, 255, 0.24), transparent 28%),
    radial-gradient(circle at 62% 72%, rgba(128, 241, 128, 0.22), transparent 30%),
    #f7f7f8;
}

.hero-copy {
  align-self: center;
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: #0071e3;
  font-size: 1.08rem;
  line-height: 1.35;
  font-weight: 700;
  text-transform: none;
}

.hero h1,
.page-hero h1 {
  max-width: 920px;
  margin: 0;
  font-size: 5.35rem;
  line-height: 0.98;
  font-weight: 750;
}

html[lang="en"] .hero {
  grid-template-columns: minmax(0, 1.28fr) minmax(300px, 0.72fr);
}

html[lang="en"] .hero h1 {
  max-width: 780px;
  font-size: clamp(2.55rem, 2.65vw, 3rem);
  line-height: 1.08;
  text-wrap: balance;
}

html[lang="en"] .page-hero h1 {
  max-width: 980px;
  font-size: clamp(3.1rem, 3.35vw, 3.55rem);
  line-height: 1.08;
  text-wrap: balance;
}

.page-hero h1.page-hero-compact {
  max-width: 1080px;
  font-size: clamp(3.35rem, 4.3vw, 4.65rem);
  line-height: 1.06;
}

.page-hero-split span {
  display: block;
}

.page-hero-line {
  display: flex;
  align-items: baseline;
  flex-wrap: nowrap;
  gap: 0.18em;
  white-space: nowrap;
}

.title-separator {
  color: #999999;
  font-size: 0.88em;
  font-weight: 300;
  -webkit-text-stroke-width: 0.45px;
  -webkit-text-stroke-color: rgba(153, 153, 153, 0.42);
}

.about-region-line span:not(.title-separator) {
  white-space: nowrap;
}

html[lang="en"] .page-hero h1.page-hero-compact {
  max-width: 1120px;
  font-size: clamp(2.75rem, 3.15vw, 3.35rem);
  line-height: 1.1;
}

html[lang="en"] .page-hero h1.about-region-line {
  max-width: 1180px;
  gap: 0.12em;
  font-size: clamp(2.32rem, 2.72vw, 2.9rem);
}

html[lang="en"] .hero-title-line {
  white-space: nowrap;
}

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

.hero-lede,
.page-hero p,
.intro-panel p,
.product-copy p,
.about-statement p,
.business-split p,
.wechat-section p {
  color: var(--muted);
  font-size: 1.18rem;
  line-height: 1.75;
}

.hero-lede {
  max-width: 720px;
  margin: 28px 0 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

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

.button:focus-visible,
.text-link:focus-visible,
.site-nav a:focus-visible,
.nav-toggle:focus-visible,
.language-switch button:focus-visible {
  outline: 3px solid rgba(0, 113, 227, 0.42);
  outline-offset: 3px;
}

.button-dark {
  color: #fff;
  background: #0071e3;
  box-shadow: 0 12px 26px rgba(0, 113, 227, 0.22);
}

.button-dark:hover {
  background: #0065cc;
}

.button-light {
  color: #111;
  background: #fff;
  border-color: var(--line);
}

.button-ghost {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
  border-color: rgba(0, 0, 0, 0.12);
}

.hero-stage {
  position: relative;
  min-height: 440px;
  align-self: stretch;
}

.hero-care-stage {
  display: grid;
  align-items: center;
}

.care-hero-image {
  width: 100%;
  height: min(520px, 62vh);
  object-fit: cover;
  object-position: center center;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 28px;
  box-shadow: 0 36px 90px rgba(38, 70, 92, 0.14);
}

.stage-orbit {
  position: absolute;
  inset: 10% 4% 6%;
  border-radius: 50%;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.24));
  filter: blur(1px);
}

.hero-device {
  position: absolute;
  object-fit: contain;
  filter: drop-shadow(0 42px 42px rgba(0, 0, 0, 0.16));
  animation: deviceFloat 6s ease-in-out infinite;
}

.device-fall {
  width: min(58%, 330px);
  top: 4%;
  left: 2%;
  transform: rotate(-7deg);
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.intro-panel {
  min-height: 360px;
  padding: 44px 0;
}

.intro-panel h2 {
  max-width: 660px;
  margin: 0 0 28px;
  font-size: 2.35rem;
  line-height: 1.16;
}

.intro-dark {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: center;
  color: var(--ink);
  padding-left: 36px;
  padding-right: 44px;
  background:
    linear-gradient(rgba(0, 0, 0, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.05) 1px, transparent 1px),
    radial-gradient(circle at 16% 18%, rgba(91, 200, 255, 0.18), transparent 32%),
    #f5f7f9;
  background-size: 88px 88px;
}

.intro-dark > *,
.intro-cta > *,
.intro-capabilities > * {
  width: min(100%, calc(var(--max) / 2 - 44px));
}

.intro-dark p {
  color: var(--muted);
}

.intro-dark .section-kicker {
  color: #0071e3;
}

.intro-cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  padding-left: 44px;
  padding-right: 36px;
  background: #fff;
}

.intro-capabilities {
  display: flex;
  align-items: center;
  padding-left: 44px;
  padding-right: 36px;
  background: #fff;
}

.intro-capabilities .dual-capability-grid {
  grid-template-columns: 1fr;
  gap: 14px;
}

.intro-capabilities .home-capability-card {
  min-height: 0;
  padding: 24px;
}

.capability-icon {
  display: inline-grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border: 1px solid rgba(5, 5, 5, 0.14);
  border-radius: 50%;
  color: #45484d;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(240, 242, 245, 0.84));
}

.capability-icon svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.quick-form,
.notify-form,
.contact-form {
  display: grid;
  gap: 14px;
}

label span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 15px 16px;
  color: var(--ink);
  background: #fff;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

input:focus,
select:focus,
textarea:focus {
  border-color: #0071e3;
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.12);
}

.text-link {
  justify-self: start;
  border: 0;
  padding: 0;
  color: #0071e3;
  background: transparent;
  font-size: 2.3rem;
  font-weight: 750;
  text-decoration: underline;
  cursor: pointer;
}

.form-note {
  min-height: 22px;
  margin: 0;
  color: #167c2f;
  font-size: 0.92rem;
}

.section {
  padding: 96px 0;
}

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

.section-heading {
  max-width: 760px;
  margin-bottom: 42px;
}

.core-title-split span {
  display: block;
}

html[lang="en"] .core-section .section-heading {
  max-width: 1120px;
}

html[lang="en"] .core-title-split {
  font-size: clamp(2.45rem, 2.62vw, 2.78rem);
  line-height: 1.12;
}

.section-heading h2,
.band-copy h2,
.cta-section h2,
.notify-section h2,
.wechat-section h2,
.about-statement h2,
.capability-section h2,
.business-split h2 {
  margin: 0;
  font-size: 3.5rem;
  line-height: 1.05;
  font-weight: 750;
}

.feature-row,
.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.dual-capability-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.home-capability-card {
  min-height: 310px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(245, 249, 252, 0.82)),
    #fff;
  box-shadow: 0 24px 70px rgba(38, 70, 92, 0.08);
}

.home-capability-card:nth-child(2) {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(247, 250, 246, 0.84)),
    #fff;
}

.home-capability-card h2 {
  margin: 0 0 22px;
  font-size: 2.7rem;
  line-height: 1.04;
  font-weight: 750;
}

.intro-capabilities .home-capability-card h2 {
  margin-bottom: 12px;
  font-size: 1.55rem;
  line-height: 1.12;
}

.home-capability-card p:not(.section-kicker) {
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.85;
}

.intro-capabilities .home-capability-card p {
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.72;
}

.core-section {
  padding-top: 96px;
}

.feature-card,
.pillar,
.roadmap article,
.contact-cards article {
  min-height: 230px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.feature-index {
  display: block;
  color: #0071e3;
  font-weight: 800;
}

.feature-card h3,
.pillar h3,
.roadmap h3 {
  margin: 34px 0 14px;
  font-size: 1.55rem;
}

.pillar h3 span {
  display: block;
}

.feature-card p,
.roadmap p,
.contact-cards p {
  color: var(--muted);
  line-height: 1.7;
}

.dark-band {
  padding: 96px max(36px, calc((100% - var(--max)) / 2));
  color: var(--ink);
  background:
    radial-gradient(circle at 72% 30%, rgba(128, 241, 128, 0.24), transparent 28%),
    radial-gradient(circle at 40% 80%, rgba(91, 200, 255, 0.18), transparent 34%),
    linear-gradient(180deg, #ffffff, #f4f8fb);
}

.product-showcase {
  display: grid;
  grid-template-columns: minmax(0, var(--max));
  justify-content: center;
  align-items: start;
}

.band-copy {
  max-width: 780px;
  margin: 0 0 40px;
}

.band-copy p {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.12rem;
  line-height: 1.8;
}

.product-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 20px;
  align-items: stretch;
}

.product-mini {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 370px;
  padding: clamp(26px, 2.6vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(18px);
  overflow: hidden;
  text-align: left;
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.product-media {
  position: relative;
  display: block;
  width: 180px;
  height: 180px;
  transition: transform 250ms ease;
}

.product-media > img:first-child {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: none;
}

.product-mini:hover,
.product-mini:focus-visible {
  border-color: rgba(0, 113, 227, 0.28);
  box-shadow: 0 28px 80px rgba(0, 113, 227, 0.12);
  transform: translateY(-4px);
}

.product-mini:hover .product-media,
.product-mini:focus-visible .product-media {
  transform: translateY(-8px) scale(1.03);
}

.product-mini h3 {
  margin: 28px 0 0;
  font-size: 1.28rem;
  font-weight: 700;
}

.product-mini-panel {
  position: static;
  margin: 14px 0 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  color: var(--muted);
  background: transparent;
  backdrop-filter: none;
  box-shadow: none;
  font-size: 0.98rem;
  line-height: 1.65;
  text-align: left;
  opacity: 1;
  transform: none;
}

.product-mini:hover .product-mini-panel,
.product-mini:focus-visible .product-mini-panel {
  opacity: 1;
  transform: none;
}

.product-mini-title {
  position: relative;
  z-index: 1;
}

.product-mini p:not(.product-mini-panel) {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.65;
}

.cta-section {
  min-height: 360px;
  display: grid;
  place-items: center;
  padding: 54px 24px 64px;
  text-align: center;
  background: var(--soft);
}

.cta-section div {
  max-width: 820px;
}

.cta-section .button {
  margin-top: 30px;
}

.page-hero {
  padding: 96px max(30px, calc((100% - var(--max)) / 2)) 74px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0), #fff 74%),
    radial-gradient(circle at 85% 10%, rgba(128, 241, 128, 0.28), transparent 28%),
    radial-gradient(circle at 12% 32%, rgba(91, 200, 255, 0.18), transparent 26%),
    var(--soft);
}

.page-hero p {
  max-width: 760px;
}

.product-detail {
  display: grid;
  grid-template-columns: minmax(320px, 0.92fr) minmax(0, 1.08fr);
  gap: 56px;
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  padding: 80px 0;
  border-top: 1px solid var(--line);
}

.product-reverse {
  direction: rtl;
}

.product-reverse > * {
  direction: ltr;
}

.product-visual {
  min-height: 560px;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  overflow: hidden;
}

.product-visual-link {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  border-radius: inherit;
}

.product-visual-link:focus-visible {
  outline: 3px solid rgba(0, 113, 227, 0.42);
  outline-offset: -8px;
}

.product-visual img {
  max-height: 430px;
  object-fit: contain;
  filter: drop-shadow(0 34px 40px rgba(0, 0, 0, 0.18));
}

.dark-product {
  background:
    radial-gradient(circle at 50% 28%, rgba(128, 241, 128, 0.26), transparent 34%),
    linear-gradient(180deg, #ffffff, #eef5f1);
}

.light-product {
  background:
    radial-gradient(circle at 52% 28%, rgba(91, 200, 255, 0.22), transparent 34%),
    #f5f5f7;
}

.product-mini.dark-product,
.product-mini.light-product {
  background: rgba(255, 255, 255, 0.7);
}

.product-copy {
  align-self: center;
}

.product-copy h2 {
  margin: 0;
  font-size: 4rem;
  line-height: 1.02;
}

.spec-list {
  display: grid;
  gap: 10px;
  margin: 28px 0;
}

.spec-list span {
  padding: 15px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.roadmap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.roadmap article span,
.pillar p,
.contact-cards span {
  color: #0071e3;
  font-size: 1.08rem;
  line-height: 1.35;
  font-weight: 800;
}

.notify-section,
.wechat-section,
.about-statement,
.capability-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  gap: 42px;
  padding: 92px max(30px, calc((100% - var(--max)) / 2));
  background: var(--soft);
}

.notify-form {
  grid-template-columns: 1fr 1fr;
  align-self: start;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.notify-form .button,
.notify-form .form-note {
  grid-column: 1 / -1;
}

.about-hero,
.contact-hero {
  background:
    radial-gradient(circle at 80% 22%, rgba(91, 200, 255, 0.18), transparent 28%),
    #f5f5f7;
}

.about-statement {
  background: #fff;
}

.about-statement > p {
  align-self: start;
  margin: calc(1.08rem * 1.35 + 16px) 0 0;
}

.pillar-grid {
  align-items: stretch;
}

.pillar {
  background: var(--soft);
}

.capability-section {
  color: var(--ink);
  background:
    linear-gradient(rgba(0, 0, 0, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.05) 1px, transparent 1px),
    radial-gradient(circle at 78% 18%, rgba(91, 200, 255, 0.2), transparent 28%),
    #f5f7f9;
  background-size: 92px 92px;
}

.capability-section .section-kicker {
  color: #0071e3;
}

.hero .eyebrow,
.section-heading .section-kicker,
.intro-panel .section-kicker,
.band-copy .section-kicker,
.product-copy .section-kicker,
.notify-section .section-kicker,
.about-statement .section-kicker,
.capability-section .section-kicker {
  color: #0071e3;
  font-size: 1.08rem;
  line-height: 1.35;
  font-weight: 700;
}

.capability-section h2 {
  color: var(--ink);
}

html[lang="en"] .about-statement h2 {
  font-size: clamp(2rem, 2.35vw, 2.45rem);
  line-height: 1.12;
}

html[lang="en"] .capability-section h2 {
  font-size: clamp(2.05rem, 2.45vw, 2.55rem);
  line-height: 1.12;
}

html[lang="en"] .business-split h2 {
  font-size: clamp(2rem, 2.18vw, 2.32rem);
  line-height: 1.08;
  white-space: nowrap;
}

.capability-loop {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  align-self: start;
  margin-top: calc(1.08rem * 1.35 + 16px);
}

.capability-loop span {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  font-weight: 700;
}

.business-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.business-split article {
  min-height: 420px;
  padding: 34px;
  border-radius: var(--radius);
  background: var(--soft);
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 22px;
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  padding: 80px 0;
}

.contact-cards {
  display: grid;
  gap: 14px;
}

.contact-cards article {
  min-height: auto;
}

.contact-cards strong {
  display: block;
  margin-top: 14px;
  font-size: 1.45rem;
}

.contact-form {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.wechat-section {
  align-items: center;
}

.wechat-section.is-hidden {
  display: none;
}

.qr-card {
  justify-self: end;
  width: min(360px, 100%);
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  text-align: center;
}

.qr-grid {
  display: grid;
  grid-template-columns: repeat(13, 1fr);
  gap: 5px;
  width: 100%;
  aspect-ratio: 1;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.qr-grid span {
  border-radius: 2px;
  background: #111;
  opacity: 0;
}

.qr-grid span.is-on {
  opacity: 1;
}

.qr-card > span {
  display: block;
  margin-top: 16px;
  color: var(--muted);
}

.site-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 32px max(28px, calc((100% - var(--max)) / 2));
  text-align: center;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: #f5f5f7;
}

.site-footer p {
  margin: 0;
}

.footer-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.icp-link {
  color: #777;
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.app-hero {
  display: grid;
  grid-template-columns: minmax(0, 860px);
  min-height: min(620px, calc(100vh - 82px));
  padding: 88px max(36px, calc((100% - var(--max)) / 2)) 78px;
  background:
    radial-gradient(circle at 78% 20%, rgba(128, 241, 128, 0.28), transparent 30%),
    radial-gradient(circle at 16% 78%, rgba(91, 200, 255, 0.18), transparent 28%),
    linear-gradient(180deg, #ffffff, #f6f9fb);
}

.app-hero-copy {
  align-self: center;
}

.app-hero h1 {
  margin: 0;
  font-size: clamp(4rem, 6vw, 6.2rem);
  line-height: 0.96;
  font-weight: 760;
}

.app-hero h1 span {
  display: block;
}

.app-hero-copy > p:not(.eyebrow) {
  max-width: 680px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 1.18rem;
  line-height: 1.75;
}

.app-intro-section {
  padding: 96px max(36px, calc((100% - var(--max)) / 2));
  background:
    radial-gradient(circle at 76% 22%, rgba(128, 241, 128, 0.22), transparent 28%),
    radial-gradient(circle at 24% 70%, rgba(91, 200, 255, 0.16), transparent 32%),
    #f5f5f7;
}

.app-intro-head {
  max-width: 880px;
  margin-bottom: 42px;
}

.app-intro-head h2 {
  margin: 0;
  font-size: clamp(3.4rem, 5vw, 5.4rem);
  line-height: 0.98;
}

.app-intro-head p:not(.section-kicker),
.app-audience-panel p {
  color: var(--muted);
  font-size: 1.14rem;
  line-height: 1.78;
}

.app-feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.app-feature-grid article {
  min-height: 270px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px);
}

.app-feature-grid span {
  color: #0071e3;
  font-weight: 800;
}

.app-feature-grid h3 {
  margin: 34px 0 14px;
  font-size: 1.45rem;
}

.app-feature-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.app-audience-panel {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: start;
  gap: 34px;
  margin-top: 18px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(18px);
}

.app-audience-panel > div {
  align-self: start;
}

.app-audience-panel > div:last-child {
  align-self: end;
}

.app-audience-panel > div:last-child p:first-child {
  margin-top: 0;
}

.app-audience-panel > div:last-child p:last-child {
  margin-bottom: 0;
}

.app-audience-panel ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.app-audience-panel li {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #2d2d2f;
  background: rgba(255, 255, 255, 0.74);
  font-weight: 700;
}

.app-audience-panel a {
  color: #0071e3;
  font-weight: 700;
}

.site-footer-detail {
  flex-wrap: wrap;
}

.developer-credit {
  flex: 0 0 100%;
  margin: 8px 0 0;
  color: #777;
  font-size: 13px;
  text-align: center;
}

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  color: #555;
  font-size: 13px;
}

.footer-legal-links a:hover {
  color: #0071e3;
}

.legal-hero {
  padding: 92px max(30px, calc((100% - var(--max)) / 2)) 56px;
  background:
    radial-gradient(circle at 80% 16%, rgba(128, 241, 128, 0.22), transparent 28%),
    radial-gradient(circle at 14% 58%, rgba(91, 200, 255, 0.14), transparent 24%),
    #f5f5f7;
}

.legal-hero h1 {
  margin: 0;
  font-size: clamp(3rem, 5vw, 5.2rem);
  line-height: 1.02;
  font-weight: 760;
}

.legal-content {
  padding: 70px 0 96px;
}

.legal-content h1,
.legal-content h2,
.legal-content h3,
.legal-content h4 {
  color: var(--ink);
}

.legal-content h1 {
  margin: 0 0 28px;
  font-size: clamp(2.4rem, 3.8vw, 4rem);
  line-height: 1.08;
}

.legal-content h2 {
  margin: 44px 0 16px;
  font-size: clamp(1.7rem, 2.4vw, 2.35rem);
  line-height: 1.18;
}

.legal-content h3 {
  margin: 28px 0 12px;
  font-size: 1.28rem;
  line-height: 1.35;
}

.legal-content h4 {
  margin: 24px 0 10px;
  font-size: 1.12rem;
}

.legal-content p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.86;
}

.legal-content .legal-lead {
  color: var(--ink);
  font-weight: 700;
}

.legal-content strong {
  color: var(--ink);
}

.legal-content u {
  text-underline-offset: 3px;
}

.legal-table-wrap {
  overflow-x: auto;
  margin: 20px 0;
}

.legal-content table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

.legal-content td {
  padding: 12px 14px;
  border: 1px solid var(--line);
  color: var(--muted);
  line-height: 1.65;
  vertical-align: top;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 650ms ease, transform 650ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes deviceFloat {
  0%,
  100% {
    translate: 0 0;
  }
  50% {
    translate: 0 -16px;
  }
}

@media (max-width: 980px) {
  .hero,
  .dark-band,
  .app-hero,
  .product-detail,
  .notify-section,
  .wechat-section,
  .about-statement,
  .capability-section,
  .contact-layout,
  .app-audience-panel {
    grid-template-columns: 1fr;
  }

  .app-audience-panel > div:last-child {
    align-self: start;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 3.8rem;
  }

  .page-hero h1.page-hero-compact,
  html[lang="en"] .page-hero h1.page-hero-compact {
    font-size: 3.05rem;
    line-height: 1.1;
  }

  .page-hero-line {
    flex-wrap: wrap;
    white-space: normal;
  }

  .about-statement > p,
  .capability-loop {
    margin-top: 0;
  }

  html[lang="en"] .hero h1,
  html[lang="en"] .page-hero h1 {
    font-size: 3.05rem;
    line-height: 1.1;
  }

  .section-heading h2,
  .band-copy h2,
  .cta-section h2,
  .notify-section h2,
  .wechat-section h2,
  .about-statement h2,
  .capability-section h2,
  .business-split h2 {
    font-size: 2.7rem;
  }

  .intro-grid,
  .dual-capability-grid,
  .feature-row,
  .app-feature-grid,
  .roadmap,
  .pillar-grid,
  .business-split,
  .product-strip {
    grid-template-columns: 1fr;
  }

  .intro-dark,
  .intro-cta,
  .intro-capabilities {
    align-items: stretch;
    padding-left: 24px;
    padding-right: 24px;
  }

  .intro-dark > *,
  .intro-cta > *,
  .intro-capabilities > * {
    width: 100%;
  }

  .hero-stage {
    min-height: 500px;
  }

  .product-reverse {
    direction: ltr;
  }

  .app-feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .qr-card {
    justify-self: start;
  }
}

@media (max-width: 720px) {
  .site-header {
    height: 68px;
    padding: 0 18px;
  }

  .brand {
    gap: 5px;
    font-size: 24px;
  }

  .brand-logo {
    width: 44px;
    height: 44px;
  }

  .nav-toggle {
    display: inline-block;
  }

  .language-switch {
    order: 2;
    margin-left: auto;
  }

  .site-nav {
    position: fixed;
    order: 5;
    inset: 68px 0 auto 0;
    display: none;
    grid-template-columns: 1fr;
    gap: 0;
    padding: 10px 18px 18px;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(18px);
  }

  body.nav-open .site-nav {
    display: grid;
  }

  body.nav-open .nav-toggle span:first-child {
    transform: translateY(3px) rotate(45deg);
  }

  body.nav-open .nav-toggle span:last-child {
    transform: translateY(-4px) rotate(-45deg);
  }

  .site-nav a {
    width: 100%;
    border-radius: var(--radius);
    text-align: left;
  }

  .hero,
  .page-hero,
  .app-hero {
    padding-left: 22px;
    padding-right: 22px;
  }

  .hero {
    min-height: auto;
    padding-top: 62px;
  }

  .hero h1,
  .page-hero h1 {
    font-size: 2.72rem;
    line-height: 1.04;
  }

  .page-hero h1.page-hero-compact,
  html[lang="en"] .page-hero h1.page-hero-compact {
    font-size: 2.2rem;
    line-height: 1.14;
  }

  html[lang="en"] .hero h1,
  html[lang="en"] .page-hero h1 {
    font-size: 2.18rem;
    line-height: 1.14;
  }

  .app-hero h1 {
    font-size: 3.1rem;
    line-height: 1.04;
  }

  html[lang="en"] .hero-title-line {
    white-space: normal;
  }

  .hero-lede,
  .page-hero p,
  .intro-panel p,
  .product-copy p,
  .about-statement p,
  .business-split p,
  .wechat-section p {
    font-size: 1rem;
  }

  .hero-stage {
    min-height: 320px;
  }

  .care-hero-image {
    height: 320px;
    border-radius: 20px;
    object-position: center center;
  }

  .device-fall {
    width: min(58%, 240px);
  }

  .intro-panel {
    min-height: auto;
    padding: 32px 22px;
  }

  .intro-panel h2,
  .text-link {
    font-size: 1.8rem;
  }

  .section {
    padding: 68px 0;
  }

  .home-capability-card {
    min-height: 0;
    padding: 26px;
  }

  .home-capability-card h2 {
    font-size: 2.05rem;
  }

  .core-section {
    padding-top: 54px;
  }

  .shell,
  .product-detail,
  .contact-layout {
    width: calc(100% - 36px);
  }

  .section-heading h2,
  .band-copy h2,
  .cta-section h2,
  .notify-section h2,
  .wechat-section h2,
  .about-statement h2,
  .capability-section h2,
  .business-split h2,
  .product-copy h2 {
    font-size: 2.1rem;
  }

  .dark-band,
  .app-intro-section,
  .notify-section,
  .wechat-section,
  .about-statement,
  .capability-section {
    padding: 64px 22px;
  }

  .app-feature-grid,
  .app-audience-panel {
    grid-template-columns: 1fr;
  }

  .app-audience-panel {
    padding: 22px;
  }

  .product-visual {
    min-height: 420px;
  }

  .notify-form,
  .form-row,
  .capability-loop {
    grid-template-columns: 1fr;
  }

  .site-footer {
    display: grid;
    padding: 28px 22px;
  }
}