@font-face {
  font-family: "Poppins";
  src: url("assets/fonts/Poppins-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Poppins";
  src: url("assets/fonts/Poppins-SemiBold.ttf") format("truetype");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

:root {
  --neutral-0: #fcfcfc;
  --neutral-50: #f9f9f9;
  --neutral-100: #ecedef;
  --neutral-200: #d9dbde;
  --neutral-300: #c6c9ce;
  --neutral-500: #a3a7af;
  --neutral-600: #8c929c;
  --neutral-700: #656e7b;
  --neutral-800: #3f4a5a;
  --neutral-950: #222e42;
  --yellow-30: #fff5d9;
  --yellow-100: #ffe28d;
  --yellow-300: #ffcf40;
  --yellow-400: #fcc038;
  --orange-400: #ff9233;
  --blue-100: #dcf5fe;
  --blue-500: #80bbd3;
  --blue-900: #155385;
  --sky-blue-30: #f7fcfe;
  --content-width: 1180px;
  --page-gutter: 28px;
  --font-cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-latin: "Poppins", "PingFang SC", sans-serif;
  --shadow-screen: 0 30px 80px rgba(34, 46, 66, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--neutral-50);
  color: var(--neutral-950);
  font-family: var(--font-cn);
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  background: var(--neutral-950);
  color: var(--neutral-0);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  width: 100%;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(var(--page-gutter), calc((100vw - var(--content-width)) / 2));
  border-bottom: 1px solid transparent;
  transition: background-color 180ms ease, border-color 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(249, 249, 249, 0.94);
  border-color: var(--neutral-200);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  white-space: nowrap;
}

.brand-cn {
  font-size: 20px;
  font-weight: 600;
}

.brand-en {
  color: var(--neutral-600);
  font-family: var(--font-latin);
  font-size: 10px;
  font-weight: 600;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 14px;
  font-weight: 500;
}

.site-nav a {
  padding: 10px 0;
  color: var(--neutral-700);
  transition: color 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--neutral-950);
}

.site-nav .nav-contact {
  padding: 10px 18px;
  border: 1px solid var(--neutral-300);
  border-radius: 999px;
  color: var(--neutral-950);
}

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
}

.menu-button span {
  display: block;
  width: 20px;
  height: 1px;
  margin: 6px auto;
  background: var(--neutral-950);
  transition: transform 180ms ease;
}

.section-inner {
  width: min(calc(100% - (var(--page-gutter) * 2)), var(--content-width));
  margin: 0 auto;
}

.section {
  padding: 132px 0;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--blue-900);
  font-family: var(--font-latin);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.5;
}

.hero {
  position: relative;
  min-height: min(860px, 92svh);
  overflow: hidden;
  background: var(--sky-blue-30);
  border-bottom: 1px solid var(--neutral-200);
}

.hero-copy {
  position: relative;
  z-index: 3;
  width: min(620px, calc(100% - (var(--page-gutter) * 2)));
  margin-left: max(var(--page-gutter), calc((100vw - var(--content-width)) / 2));
  padding-top: 190px;
}

.hero h1 {
  max-width: 620px;
  margin: 0;
  font-size: 68px;
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: 0;
}

.hero-lead {
  max-width: 540px;
  margin: 28px 0 0;
  color: var(--neutral-700);
  font-size: 19px;
  line-height: 1.8;
}

.hero h1 .product-type {
  white-space: nowrap;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  padding: 0 24px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
}

.button-primary {
  background: var(--yellow-300);
  color: var(--neutral-950);
  box-shadow: 0 10px 30px rgba(252, 192, 56, 0.24);
  transition: background-color 160ms ease, transform 160ms ease;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--orange-400);
  transform: translateY(-2px);
}

.text-link {
  color: var(--neutral-700);
  font-size: 14px;
  font-weight: 600;
}

.text-link span {
  display: inline-block;
  margin-left: 5px;
  transition: transform 160ms ease;
}

.text-link:hover span,
.text-link:focus-visible span {
  transform: translateX(4px);
}

.hero-scene {
  position: absolute;
  z-index: 1;
  top: 118px;
  right: max(10px, calc((100vw - 1320px) / 2));
  width: 580px;
  height: 710px;
}

.hero-screen {
  position: absolute;
  width: 300px;
  aspect-ratio: 393 / 852;
  object-fit: cover;
  border-radius: 28px;
  box-shadow: var(--shadow-screen);
}

.hero-screen-back {
  top: 78px;
  left: 0;
  opacity: 0.74;
  transform: rotate(-4deg);
}

.hero-screen-front {
  top: 0;
  right: 0;
  transform: rotate(3deg);
}

.hero-note {
  position: absolute;
  z-index: 2;
  right: max(var(--page-gutter), calc((100vw - var(--content-width)) / 2));
  bottom: 30px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--neutral-600);
  font-family: var(--font-latin);
  font-size: 11px;
}

.hero-note i {
  width: 76px;
  height: 1px;
  background: var(--neutral-300);
}

.identity-band {
  padding: 34px 0;
  background: var(--yellow-300);
}

.identity-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  align-items: start;
  gap: 60px;
}

.identity-grid p {
  margin: 0;
}

.identity-kicker {
  padding-top: 7px;
  font-family: var(--font-latin);
  font-size: 11px;
  font-weight: 600;
}

.identity-statement {
  max-width: 770px;
  font-size: 21px;
  font-weight: 600;
  line-height: 1.65;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 60px;
  align-items: end;
  margin-bottom: 86px;
}

.section-heading .eyebrow {
  grid-column: 1 / -1;
}

.section-heading h2,
.company h2,
.contact h2,
.flow-intro h2 {
  margin: 0;
  font-size: 44px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0;
}

.section-heading > p:last-child {
  max-width: 470px;
  margin: 0 0 4px;
  color: var(--neutral-700);
  font-size: 16px;
  line-height: 1.9;
}

.experience {
  background: var(--neutral-50);
}

.experience-stage {
  position: relative;
  min-height: 920px;
  border-top: 1px solid var(--neutral-200);
}

.screen-figure {
  position: absolute;
  margin: 0;
}

.screen-figure img {
  width: 100%;
  aspect-ratio: 393 / 852;
  object-fit: cover;
  border-radius: 28px;
  box-shadow: var(--shadow-screen);
}

.screen-figure-primary {
  top: 78px;
  left: 13%;
  width: 348px;
}

.screen-figure-secondary {
  top: 170px;
  right: 13%;
  width: 300px;
}

.screen-figure figcaption {
  display: grid;
  grid-template-columns: 42px 1fr;
  margin-top: 22px;
  color: var(--neutral-950);
}

.screen-figure figcaption span {
  grid-row: 1 / 3;
  color: var(--neutral-500);
  font-family: var(--font-latin);
  font-size: 12px;
}

.screen-figure figcaption strong {
  font-size: 16px;
}

.screen-figure figcaption small {
  margin-top: 5px;
  color: var(--neutral-600);
  font-size: 13px;
}

.capabilities {
  background: var(--neutral-0);
}

.section-heading.compact {
  display: block;
  max-width: 720px;
  margin-bottom: 64px;
}

.capability-list {
  border-top: 1px solid var(--neutral-200);
}

.capability {
  display: grid;
  grid-template-columns: 90px 260px 1fr;
  align-items: baseline;
  gap: 30px;
  padding: 34px 0;
  border-bottom: 1px solid var(--neutral-200);
}

.capability-index {
  color: var(--blue-900);
  font-family: var(--font-latin);
  font-size: 12px;
  font-weight: 600;
}

.capability h3 {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
}

.capability p {
  max-width: 620px;
  margin: 0;
  color: var(--neutral-700);
  font-size: 15px;
  line-height: 1.8;
}

.system-flow {
  background: var(--blue-100);
}

.flow-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 110px;
}

.flow-intro p:last-child {
  max-width: 480px;
  margin: 26px 0 0;
  color: var(--neutral-700);
  font-size: 16px;
  line-height: 1.9;
}

.flow-steps {
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(34, 46, 66, 0.2);
  list-style: none;
}

.flow-steps li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid rgba(34, 46, 66, 0.2);
}

.flow-steps > li > span {
  color: var(--blue-900);
  font-family: var(--font-latin);
  font-size: 12px;
  font-weight: 600;
}

.flow-steps div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
}

.flow-steps strong {
  font-size: 18px;
}

.flow-steps small {
  color: var(--neutral-700);
  font-size: 13px;
  text-align: right;
}

.company {
  background: var(--neutral-950);
  color: var(--neutral-0);
}

.company .eyebrow {
  color: var(--yellow-400);
}

.company-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 110px;
}

.company-copy > p {
  margin: 0;
  color: var(--neutral-200);
  font-size: 17px;
  line-height: 1.95;
}

.company-facts {
  margin: 56px 0 0;
  border-top: 1px solid rgba(252, 252, 252, 0.2);
}

.company-facts div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 28px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(252, 252, 252, 0.2);
}

.company-facts dt {
  color: var(--neutral-500);
  font-size: 13px;
}

.company-facts dd {
  margin: 0;
  color: var(--neutral-100);
  font-family: var(--font-latin);
  font-size: 14px;
  line-height: 1.7;
}

.contact {
  background: var(--yellow-30);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: end;
  gap: 80px;
}

.contact address {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 0 2px;
  border-top: 1px solid var(--neutral-300);
  color: var(--neutral-700);
  font-size: 14px;
  font-style: normal;
  line-height: 1.8;
}

.contact address strong {
  color: var(--neutral-950);
  font-size: 16px;
}

.contact address a {
  color: var(--blue-900);
}

.site-footer {
  padding: 56px max(var(--page-gutter), calc((100vw - var(--content-width)) / 2)) 28px;
  background: var(--neutral-0);
}

.footer-main,
.footer-legal {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}

.footer-main {
  padding-bottom: 42px;
}

.footer-links {
  display: flex;
  gap: 28px;
  color: var(--neutral-700);
  font-size: 13px;
}

.footer-legal {
  padding-top: 22px;
  border-top: 1px solid var(--neutral-200);
  color: var(--neutral-600);
  font-size: 12px;
}

.footer-legal a:hover,
.footer-legal a:focus-visible,
.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--neutral-950);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

.legal-page {
  background: var(--neutral-0);
}

.legal-header {
  position: sticky;
  background: rgba(252, 252, 252, 0.96);
  border-color: var(--neutral-200);
}

.legal-main {
  width: min(calc(100% - (var(--page-gutter) * 2)), 820px);
  margin: 0 auto;
  padding: 156px 0 120px;
}

.legal-main h1 {
  margin: 0;
  font-size: 46px;
  font-weight: 600;
  line-height: 1.25;
}

.legal-meta {
  margin: 18px 0 72px;
  color: var(--neutral-600);
  font-size: 13px;
}

.legal-section {
  padding: 30px 0;
  border-top: 1px solid var(--neutral-200);
}

.legal-section h2 {
  margin: 0 0 16px;
  font-size: 22px;
  font-weight: 600;
}

.legal-section p,
.legal-section li {
  color: var(--neutral-700);
  font-size: 15px;
  line-height: 1.9;
}

.legal-section ul {
  padding-left: 22px;
}

.legal-section strong {
  color: var(--neutral-950);
}

@media (max-width: 1100px) {
  .hero-copy {
    width: 510px;
  }

  .hero h1 {
    font-size: 56px;
  }

  .hero-scene {
    right: -90px;
    opacity: 0.82;
  }

  .hero-copy::after {
    position: absolute;
    z-index: -1;
    inset: 140px -30px -40px -30px;
    background: rgba(247, 252, 254, 0.84);
    content: "";
  }

  .screen-figure-primary {
    left: 7%;
  }

  .screen-figure-secondary {
    right: 7%;
  }
}

@media (max-width: 820px) {
  :root {
    --page-gutter: 20px;
  }

  .site-header {
    height: 64px;
  }

  .menu-button {
    display: block;
  }

  .menu-button[aria-expanded="true"] span:first-child {
    transform: translateY(3.5px) rotate(45deg);
  }

  .menu-button[aria-expanded="true"] span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    inset: 64px 0 auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 18px var(--page-gutter) 28px;
    background: var(--neutral-50);
    border-bottom: 1px solid var(--neutral-200);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 15px 0;
    border-bottom: 1px solid var(--neutral-200);
  }

  .site-nav .nav-contact {
    margin-top: 14px;
    padding: 13px 18px;
    border: 1px solid var(--neutral-300);
    text-align: center;
  }

  .hero {
    height: calc(100svh - 40px);
    min-height: 620px;
    max-height: 820px;
  }

  .hero-copy {
    width: calc(100% - (var(--page-gutter) * 2));
    margin: 0 auto;
    padding-top: 124px;
  }

  .hero-copy::after {
    display: none;
  }

  .hero h1 {
    font-size: 46px;
  }

  .hero-lead {
    max-width: 600px;
    font-size: 17px;
  }

  .hero-scene {
    top: 430px;
    right: 50%;
    width: 600px;
    height: 540px;
    transform: translateX(50%) scale(0.78);
    transform-origin: top center;
  }

  .hero-note {
    display: none;
  }

  .section {
    padding: 96px 0;
  }

  .identity-grid,
  .section-heading,
  .flow-layout,
  .company-grid,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .identity-grid {
    gap: 12px;
  }

  .identity-statement {
    font-size: 18px;
  }

  .section-heading {
    margin-bottom: 60px;
  }

  .section-heading h2,
  .company h2,
  .contact h2,
  .flow-intro h2 {
    font-size: 36px;
  }

  .experience-stage {
    min-height: 820px;
  }

  .screen-figure-primary {
    left: 5%;
    width: 300px;
  }

  .screen-figure-secondary {
    top: 160px;
    right: 5%;
    width: 260px;
  }

  .capability {
    grid-template-columns: 52px 180px 1fr;
    gap: 20px;
  }

  .flow-layout,
  .company-grid {
    gap: 64px;
  }
}

@media (max-width: 580px) {
  .brand-en {
    display: none;
  }

  .hero {
    min-height: 620px;
  }

  .hero-copy {
    padding-top: 108px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero-lead {
    margin-top: 20px;
    font-size: 16px;
    line-height: 1.75;
  }

  .hero-actions {
    gap: 18px;
    margin-top: 28px;
  }

  .button {
    min-height: 48px;
    padding: 0 20px;
  }

  .hero-scene {
    top: 440px;
    width: 520px;
    transform: translateX(50%) scale(0.66);
  }

  .section-heading h2,
  .company h2,
  .contact h2,
  .flow-intro h2 {
    font-size: 32px;
  }

  .experience-stage {
    min-height: 1080px;
  }

  .screen-figure {
    position: relative;
  }

  .screen-figure-primary,
  .screen-figure-secondary {
    top: auto;
    right: auto;
    left: auto;
    width: min(82vw, 320px);
    margin: 0 auto;
  }

  .screen-figure-primary {
    padding-top: 56px;
  }

  .screen-figure-secondary {
    margin-top: 64px;
  }

  .capability {
    grid-template-columns: 42px 1fr;
    padding: 28px 0;
  }

  .capability p {
    grid-column: 2;
  }

  .flow-steps div {
    flex-direction: column;
    gap: 6px;
  }

  .flow-steps small {
    text-align: left;
  }

  .company-facts div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .footer-main,
  .footer-legal {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-links {
    flex-wrap: wrap;
    row-gap: 12px;
  }

  .footer-legal {
    gap: 12px;
  }

  .legal-main {
    padding-top: 124px;
  }

  .legal-main h1 {
    font-size: 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}