:root {
  color-scheme: light;
  --bg: #f5f5f7;
  --surface: #ffffff;
  --surface-soft: #fbfbfd;
  --surface-tint: rgba(255, 255, 255, 0.82);
  --ink: #1d1d1f;
  --text: #424245;
  --muted: #6e6e73;
  --line: rgba(0, 0, 0, 0.1);
  --line-strong: rgba(0, 0, 0, 0.18);
  --blue: #007aff;
  --blue-strong: #005ecb;
  --blue-soft: #e8f2ff;
  --green: #34c759;
  --orange: #ff9500;
  --pink: #ff2d55;
  --purple: #af52de;
  --radius: 8px;
  --shadow-sm: 0 6px 18px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 18px 48px rgba(0, 0, 0, 0.1);
  --content: min(1180px, calc(100% - 48px));
  --content-wide: min(1388px, calc(100% - 48px));
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 112px;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(245, 245, 247, 0.98));
}

a {
  color: inherit;
}

img,
svg,
canvas {
  max-width: 100%;
}

img {
  display: block;
}

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

button {
  cursor: pointer;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4,
strong,
a,
button {
  letter-spacing: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: 62px;
  line-height: 1.04;
  font-weight: 800;
}

h2 {
  margin-bottom: 18px;
  font-size: 42px;
  line-height: 1.12;
  font-weight: 760;
}

h3 {
  margin-bottom: 12px;
  font-size: 24px;
  line-height: 1.24;
  font-weight: 720;
}

h4 {
  margin-bottom: 10px;
  font-size: 20px;
  line-height: 1.3;
}

p,
li {
  line-height: 1.72;
}

.page-anchor {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  transform: translateY(-150%);
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--surface);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(0, 122, 255, 0.34);
  outline-offset: 3px;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  gap: 18px;
  min-height: 66px;
  padding: 10px max(24px, calc((100vw - 1480px) / 2 + 24px));
  border-bottom: 1px solid var(--line);
  background: rgba(245, 245, 247, 0.86);
  backdrop-filter: saturate(180%) blur(22px);
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 206px;
  text-decoration: none;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: var(--radius);
  object-fit: contain;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  color: var(--ink);
  font-size: 16px;
  font-weight: 760;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.site-nav,
.header-actions {
  display: flex;
  align-items: center;
}

.site-nav {
  flex: 1 1 auto;
  justify-content: center;
  gap: 18px;
  min-width: 0;
  color: var(--text);
  font-size: 15px;
  font-weight: 650;
  white-space: nowrap;
}

.site-nav a {
  position: relative;
  padding: 8px 0;
  text-decoration: none;
  transition: color 0.18s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 2px;
  border-radius: 999px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.18s ease;
}

.site-nav a:hover {
  color: var(--blue-strong);
}

.site-nav a:hover::after,
.site-nav a.is-active::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.site-nav a.is-active,
.site-nav a[aria-current="page"] {
  color: var(--blue-strong);
}

.header-actions {
  flex: 0 0 auto;
  gap: 12px;
}

.menu-toggle {
  display: none;
  place-items: center;
  width: 42px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--ink);
}

.menu-toggle span {
  display: block;
  width: 17px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle span + span {
  margin-top: 4px;
}

.site-header.is-menu-open .menu-toggle span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header.is-menu-open .menu-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.is-menu-open .menu-toggle span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.mobile-only {
  display: none;
}

.desktop-only {
  display: flex;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
}

.lang-button {
  min-width: 48px;
  min-height: 32px;
  padding: 0 12px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.lang-button.is-active {
  background: var(--ink);
  color: var(--surface);
}

.nav-action,
.primary-button,
.secondary-button,
.call-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  max-width: 100%;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 720;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.primary-button,
.nav-action,
.call-btn {
  background: var(--blue);
  color: var(--surface);
  box-shadow: 0 10px 24px rgba(0, 122, 255, 0.2);
}

.secondary-button {
  background: rgba(255, 255, 255, 0.76);
  color: var(--ink);
  border-color: var(--line-strong);
}

.primary-button:hover,
.nav-action:hover,
.call-btn:hover {
  background: var(--blue-strong);
  transform: translateY(-1px);
}

.secondary-button:hover {
  border-color: rgba(0, 122, 255, 0.42);
  color: var(--blue-strong);
  transform: translateY(-1px);
}

.hero {
  position: relative;
  isolation: isolate;
  display: grid;
  align-content: center;
  width: 100%;
  min-height: 76svh;
  padding: 100px max(24px, calc((100vw - 1388px) / 2 + 24px)) 56px;
  overflow: hidden;
  background-image:
    linear-gradient(90deg, rgba(245, 245, 247, 0.96) 0%, rgba(245, 245, 247, 0.88) 42%, rgba(245, 245, 247, 0.58) 100%),
    image-set(
      url("assets/scene-smart-manufacturing-sm.jpg") 1x,
      url("assets/scene-smart-manufacturing.jpg") 2x
    );
  background-position: center right;
  background-size: cover;
}

.hero-backdrop {
  display: none;
}

.hero-copy {
  max-width: 780px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--blue-strong);
  font-size: 13px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero-identity {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  min-height: 34px;
  margin: 0 0 18px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
  font-size: 14px;
  font-weight: 760;
}

.lead {
  margin-bottom: 24px;
  color: var(--text);
  font-size: 20px;
}

.hero .lead {
  max-width: 680px;
  color: var(--text);
  font-size: 22px;
  font-weight: 650;
}

.lead-sub {
  max-width: 690px;
  margin: -8px 0 22px;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.78;
}

.muted {
  color: var(--muted);
}

.hero-tags,
.hero-actions,
.domain-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-actions {
  margin-top: 22px;
}

.domain-strip {
  margin-top: 18px;
}

.hero-tags span,
.domain-strip a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--blue-strong);
  font-size: 14px;
  font-weight: 760;
  text-decoration: none;
}

.hero-system {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  max-width: 680px;
  margin-top: 26px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.58);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-sm);
}

.visual-screen {
  grid-row: 1 / span 2;
  display: grid;
  place-items: center;
  width: 76px;
  aspect-ratio: 1;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.hero-logo {
  width: 62px;
  height: 62px;
  border-radius: var(--radius);
  object-fit: cover;
}

.system-line {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.system-line i {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--line-strong);
}

.hero-system p {
  grid-column: 2;
  grid-row: 2;
  align-self: start;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
  padding-top: 0;
}

.section {
  width: var(--content);
  margin: 0 auto;
  padding: 104px 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 108px;
}

.section-title {
  max-width: 980px;
  margin-bottom: 44px;
}

.section-title.centered {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.section-title p:not(.eyebrow) {
  color: var(--muted);
  font-size: 18px;
}

.value-grid,
.scene-grid,
.trust-grid,
.faq-grid,
.partner-grid,
.channel-grid,
.ecosystem-grid,
.subbrand-grid,
.case-grid,
.apple-feature-grid {
  display: grid;
  gap: 20px;
}

.value-grid,
.trust-grid,
.partner-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.scene-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.channel-grid,
.faq-grid,
.case-grid,
.apple-feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.subbrand-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

article,
.lead-form,
.contact-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow-sm);
}

article {
  padding: 24px;
}

.entry-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 100%;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow-sm);
  color: inherit;
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.entry-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 113, 227, 0.28);
  box-shadow: var(--shadow-md);
}

article > span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: 14px;
  padding: 0 9px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue-strong);
  font-size: 12px;
  font-weight: 800;
}

.entry-card > span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: 14px;
  padding: 0 9px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue-strong);
  font-size: 12px;
  font-weight: 800;
}

.entry-card p {
  color: var(--muted);
  font-size: 15px;
}

.entry-card p:last-child {
  margin-bottom: 0;
}

.subbrand-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 100%;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.subbrand-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 113, 227, 0.24);
  box-shadow: var(--shadow-md);
}

.subbrand-kicker {
  margin-bottom: 18px;
  color: var(--blue-strong);
  font-size: 13px;
  font-weight: 800;
}

.subbrand-card h3 {
  margin-bottom: 10px;
}

.subbrand-card p {
  flex: 1;
  color: var(--muted);
  font-size: 15px;
}

.subbrand-card .text-link {
  margin-top: 8px;
}

article p,
article li {
  color: var(--muted);
  font-size: 15px;
}

article p:last-child {
  margin-bottom: 0;
}

.value-grid article:nth-child(2) > span,
.partner-grid article:nth-child(2) > span {
  background: rgba(52, 199, 89, 0.14);
  color: #1f8f3d;
}

.value-grid article:nth-child(3) > span,
.partner-grid article:nth-child(3) > span {
  background: rgba(255, 149, 0, 0.16);
  color: #9a5c00;
}

.value-grid article:nth-child(4) > span,
.partner-grid article:nth-child(4) > span {
  background: rgba(175, 82, 222, 0.14);
  color: #7b35a8;
}

.detail-hero {
  max-width: 780px;
  margin: 0 auto 42px;
  text-align: center;
}

.page-hero-section {
  padding-top: 150px;
  padding-bottom: 66px;
  border-top: 0;
}

.page-hero-section .detail-hero {
  margin-bottom: 0;
}

.detail-hero h2 {
  font-size: 40px;
}

.detail-lead {
  margin: 0 0 14px;
  color: var(--text);
  font-size: 19px;
  font-weight: 650;
}

.detail-sub {
  max-width: 680px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 15px;
}

.apple-feature-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
}

.apple-feature-card:hover,
.brand-card:hover,
.case-card:hover,
.scene-card:hover,
.channel-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.apple-feature-card,
.brand-card,
.case-card,
.scene-card,
.channel-card {
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.apple-feature-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 18px;
  border-radius: var(--radius);
  background: var(--blue-soft);
  color: var(--blue-strong);
  font-size: 24px;
}

.apple-feature-card:nth-child(2) .apple-feature-icon {
  background: rgba(52, 199, 89, 0.14);
}

.apple-feature-card:nth-child(3) .apple-feature-icon {
  background: rgba(255, 149, 0, 0.16);
}

.apple-feature-card > p {
  flex: 1;
}

.apple-feature-card ul,
.case-card ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 18px;
}

.apple-feature-card li {
  color: var(--text);
  font-size: 14px;
}

.detail-cta {
  margin-top: 42px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
  text-align: center;
}

.detail-cta p {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 15px;
}

.brand-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 100%;
}

.brand-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand-card-head span {
  color: var(--ink);
  font-size: 18px;
  font-weight: 800;
}

.brand-card-head a,
.text-link {
  color: var(--blue-strong);
  font-size: 14px;
  font-weight: 760;
  text-decoration: none;
}

.brand-card strong {
  color: var(--text);
}

.scene-card {
  display: grid;
  grid-template-rows: auto auto 1fr;
  overflow: hidden;
  padding: 0;
}

.scene-media {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--blue-soft);
}

.scene-card img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform var(--transition);
}

.scene-card:hover img {
  transform: scale(1.035);
}

.scene-card h3,
.scene-card p {
  margin-right: 24px;
  margin-left: 24px;
}

.scene-card h3 {
  margin-top: 22px;
}

.scene-card p {
  margin-bottom: 24px;
}

.case-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 100%;
}

.case-card .text-link {
  margin-top: auto;
}

.faq-section {
  background: linear-gradient(180deg, #fff, #f5f5f7);
}

.faq-grid {
  max-width: var(--content-wide);
  margin: 0 auto;
}

.faq-card {
  display: grid;
  align-content: start;
  gap: 10px;
}

.faq-card h3 {
  margin: 0;
  font-size: 20px;
}

.faq-card p {
  margin: 0;
}

body[data-lang="en"] {
  word-break: normal;
  overflow-wrap: anywhere;
  hyphens: auto;
}

body[data-lang="en"] .site-nav {
  gap: 12px;
  font-size: 13px;
}

body[data-lang="en"] h1 {
  font-size: 58px;
}

body[data-lang="en"] h2 {
  font-size: 38px;
}

body[data-lang="en"] h3 {
  font-size: 22px;
}

body[data-lang="en"] .hero-copy {
  max-width: 860px;
}

body[data-lang="en"] .hero-identity,
body[data-lang="en"] .primary-button,
body[data-lang="en"] .secondary-button,
body[data-lang="en"] .nav-action,
body[data-lang="en"] .case-card .text-link {
  white-space: normal;
  text-align: center;
}

body[data-lang="en"] .case-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

body[data-lang="en"] .scene-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

body[data-lang="en"] .case-card {
  gap: 12px;
}

body[data-lang="en"] .case-card h3 {
  min-height: 56px;
}

.trust-grid article,
.partner-grid article {
  display: grid;
  align-content: start;
}

.channel-card {
  text-align: center;
}

.qr-frame {
  display: grid;
  place-items: center;
  width: min(100%, 260px);
  aspect-ratio: 1;
  margin: 0 auto 18px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.qr-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  gap: 28px;
  align-items: start;
}

.contact-info {
  min-width: 0;
}

.contact-card {
  display: grid;
  gap: 18px;
  margin-top: 26px;
  padding: 24px;
}

.contact-item {
  display: grid;
  gap: 8px;
}

.contact-label {
  color: var(--muted);
  font-size: 13px;
  font-weight: 760;
}

.contact-value-row,
.email-inline-wrap {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.contact-link {
  min-width: 0;
  color: var(--blue-strong);
  font-size: 18px;
  font-weight: 760;
  overflow-wrap: anywhere;
  text-decoration: none;
}

.contact-link.strong {
  font-size: 20px;
}

.contact-address {
  margin: 0;
  color: var(--text);
}

.lead-form {
  display: grid;
  gap: 18px;
  padding: 28px;
}

.lead-form label,
.captcha-row {
  display: grid;
  gap: 8px;
  color: var(--text);
  font-size: 14px;
  font-weight: 720;
}

.lead-form input,
.lead-form select,
.lead-form textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  padding: 11px 12px;
  outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.lead-form textarea {
  min-height: 132px;
  resize: vertical;
}

.lead-form input:focus,
.lead-form select:focus,
.lead-form textarea:focus {
  border-color: rgba(0, 122, 255, 0.58);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.12);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-hint,
.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.form-note a {
  color: var(--blue-strong);
  font-weight: 760;
  text-decoration: none;
}

.check-line {
  grid-template-columns: 20px minmax(0, 1fr);
  align-items: start;
}

.check-line input {
  width: 18px;
  min-height: 18px;
  margin: 2px 0 0;
}

.captcha-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 120px;
  gap: 10px;
  align-items: center;
}

.captcha-wrap canvas {
  width: 120px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
  cursor: pointer;
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.copy-btn,
.copy-btn-inline,
.copy-btn-small {
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--muted);
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.copy-btn {
  width: 34px;
  height: 34px;
}

.copy-btn-inline,
.copy-btn-small {
  width: 28px;
  height: 28px;
}

.copy-btn:hover,
.copy-btn-inline:hover,
.copy-btn-small:hover,
.copy-btn.copied,
.copy-btn-inline.copied,
.copy-btn-small.copied {
  border-color: rgba(0, 122, 255, 0.42);
  background: var(--blue-soft);
  color: var(--blue-strong);
}

.copy-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 260;
  transform: translate(-50%, 18px);
  opacity: 0;
  pointer-events: none;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(29, 29, 31, 0.92);
  color: var(--surface);
  font-size: 14px;
  font-weight: 720;
  transition: opacity 0.18s ease, transform 0.18s ease;
}

.copy-toast.show {
  transform: translate(-50%, 0);
  opacity: 1;
}

.footer-links {
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.footer-links-inner {
  width: var(--content-wide);
  margin: 0 auto;
  padding: 64px 0;
}

.footer-links-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

.footer-links-head h2 {
  margin-bottom: 0;
  font-size: 34px;
}

.footer-links-head p {
  max-width: 560px;
  margin-bottom: 0;
  color: var(--muted);
}

.footer-link-groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(154px, 1fr));
  gap: 14px;
}

.footer-link-groups > div {
  display: grid;
  align-content: start;
  gap: 9px;
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.footer-link-groups h3 {
  margin: 0 0 4px;
  color: var(--ink);
  font-size: 15px;
}

.footer-link-groups a {
  color: var(--muted);
  font-size: 14px;
  overflow-wrap: anywhere;
  text-decoration: none;
}

.footer-link-groups a:hover {
  color: var(--blue-strong);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  width: var(--content-wide);
  margin: 0 auto;
  padding: 26px 0 40px;
  color: var(--muted);
  font-size: 14px;
}

.contact-cta-section {
  padding-top: 72px;
  padding-bottom: 72px;
}

.cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-sm);
}

.cta-panel h2 {
  margin-bottom: 10px;
  font-size: 32px;
}

.cta-panel p:not(.eyebrow) {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
}

.footer-identity,
.footer-records {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  min-width: 0;
}

.footer-identity {
  align-items: center;
  max-width: 560px;
}

.footer-brand-logo {
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: 6px;
  object-fit: contain;
}

.footer-brand-copy {
  display: grid;
  gap: 4px;
}

.footer-records {
  justify-content: flex-end;
}

.footer-records a {
  color: var(--muted);
  text-decoration: none;
}

.footer-records a:hover {
  color: var(--blue-strong);
}

.floating-bar {
  position: fixed;
  right: 18px;
  bottom: 24px;
  z-index: 120;
  display: grid;
  gap: 10px;
}

.float-btn {
  display: grid;
  place-items: center;
  width: 50px;
  height: 50px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease, opacity 0.18s ease;
}

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

.float-btn.wechat-btn {
  background: #07c160;
  color: #ffffff;
}

.float-btn.phone-btn {
  background: var(--blue);
  color: #ffffff;
}

.float-btn.top-btn {
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
}

.float-btn.top-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.wechat-modal {
  position: fixed;
  inset: 0;
  z-index: 220;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(6px);
}

.wechat-modal.active {
  display: flex;
}

.wechat-modal-content,
.phone-tooltip-content {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}

.wechat-modal-content {
  position: relative;
  width: min(100%, 340px);
  padding: 28px;
  text-align: center;
}

.wechat-info {
  display: grid;
  gap: 14px;
  justify-items: center;
}

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

.wechat-hint {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid rgba(52, 199, 89, 0.26);
  border-radius: 999px;
  background: rgba(52, 199, 89, 0.1);
  color: #1f8f3d;
}

.modal-qr {
  width: 200px;
  margin-bottom: 0;
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-size: 28px;
  line-height: 1;
}

.modal-close:hover {
  background: var(--bg);
  color: var(--ink);
}

.phone-tooltip {
  position: fixed;
  right: 82px;
  bottom: 88px;
  z-index: 160;
  display: none;
}

.phone-tooltip.active {
  display: block;
}

.phone-tooltip-content {
  min-width: 214px;
  padding: 18px;
  text-align: center;
}

.phone-tooltip-header,
.phone-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.phone-number-large,
.phone-number {
  color: var(--blue-strong);
  font-weight: 800;
  text-decoration: none;
}

.phone-number-large {
  margin: 8px 0;
  font-size: 24px;
}

.phone-tooltip-hint {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.04s; }
.delay-2 { transition-delay: 0.08s; }
.delay-3 { transition-delay: 0.12s; }
.delay-4 { transition-delay: 0.16s; }
.delay-5 { transition-delay: 0.2s; }
.delay-6 { transition-delay: 0.24s; }

@media (max-width: 1180px) {
  h1 {
    font-size: 52px;
  }

  h2 {
    font-size: 40px;
  }

  .site-header {
    display: block;
    padding: 9px 20px;
  }

  .brand-wrapper {
    justify-content: space-between;
  }

  .desktop-only {
    display: none;
  }

  .mobile-only {
    display: flex;
  }

  .site-nav {
    justify-content: flex-start;
    gap: 16px;
    margin-top: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .site-nav::-webkit-scrollbar {
    height: 3px;
  }

  .site-nav::-webkit-scrollbar-thumb {
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.18);
  }

  .hero {
    min-height: auto;
    padding-top: 122px;
    padding-bottom: 52px;
  }

  .value-grid,
  .trust-grid,
  .faq-grid,
  .partner-grid,
  .channel-grid,
  .case-grid,
  .apple-feature-grid,
  .subbrand-grid,
  .footer-link-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .contact-section {
    grid-template-columns: 1fr;
  }

  body[data-lang="en"] h1 {
    font-size: 46px;
  }

  body[data-lang="en"] h2 {
    font-size: 34px;
  }

  body[data-lang="en"] .case-card h3 {
    min-height: 0;
  }
}

@media (max-width: 760px) {
  :root {
    --content: min(100% - 32px, 680px);
    --content-wide: min(100% - 32px, 680px);
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }

  html {
    scroll-padding-top: 126px;
  }

  h1 {
    font-size: 44px;
  }

  h2 {
    font-size: 32px;
  }

  h3 {
    font-size: 21px;
  }

  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .site-nav {
    display: none;
    gap: 0;
    font-size: 14px;
    margin-top: 12px;
    padding: 10px;
    overflow-x: visible;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow-sm);
    white-space: normal;
  }

  .site-header.is-menu-open .site-nav {
    display: grid;
    grid-template-columns: 1fr;
  }

  .site-nav a {
    min-height: 42px;
    padding: 10px 12px;
    border-radius: var(--radius);
  }

  .site-nav a::after {
    display: none;
  }

  .site-nav a.is-active,
  .site-nav a[aria-current="page"] {
    background: var(--blue-soft);
  }

  body[data-lang="en"] .site-nav {
    font-size: 13px;
  }

  .menu-toggle {
    display: grid;
  }

  .hero {
    min-height: auto;
    padding: 134px 16px 44px;
    background-image:
      linear-gradient(180deg, rgba(245, 245, 247, 0.98), rgba(245, 245, 247, 0.84)),
      url("assets/scene-smart-manufacturing-sm.jpg");
    background-position: center;
  }

  .page-hero-section {
    padding-top: 124px;
    padding-bottom: 44px;
  }

  .page-hero-section .detail-lead {
    font-size: 17px;
  }

  .hero .lead {
    font-size: 20px;
  }

  .lead-sub,
  .section-title p:not(.eyebrow) {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .primary-button,
  .hero-actions .secondary-button,
  .lead-form .primary-button {
    width: 100%;
    justify-content: center;
  }

  .hero-system {
    display: none;
  }

  .section {
    padding: 66px 0;
  }

  .value-grid,
  .scene-grid,
  .trust-grid,
  .faq-grid,
  .partner-grid,
  .channel-grid,
  .case-grid,
  .apple-feature-grid,
  .ecosystem-grid,
  .subbrand-grid,
  .footer-link-groups {
    grid-template-columns: 1fr;
  }

  body[data-lang="en"] h1 {
    font-size: 38px;
  }

  body[data-lang="en"] h2 {
    font-size: 29px;
  }

  body[data-lang="en"] h3 {
    font-size: 20px;
  }

  body[data-lang="en"] .case-grid {
    grid-template-columns: 1fr;
  }

  body[data-lang="en"] .scene-grid {
    grid-template-columns: 1fr;
  }

  article,
  .lead-form,
  .contact-card,
  .entry-card,
  .subbrand-card {
    padding: 20px;
  }

  .scene-card {
    padding: 0;
  }

  .scene-card h3,
  .scene-card p {
    margin-right: 20px;
    margin-left: 20px;
  }

  .form-row,
  .captcha-wrap {
    grid-template-columns: 1fr;
  }

  .captcha-wrap canvas {
    width: 100%;
  }

  .footer-links-inner {
    padding: 50px 0;
  }

  .footer-links-head,
  .site-footer {
    display: grid;
  }

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

  .cta-panel {
    display: grid;
    padding: 26px;
  }

  .cta-panel h2 {
    font-size: 26px;
  }

  .floating-bar {
    display: none;
  }
}

@media (max-width: 420px) {
  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 28px;
  }

  .site-header {
    padding-right: 12px;
    padding-left: 12px;
  }

  .brand strong {
    font-size: 15px;
  }

  .lang-button {
    min-width: 42px;
    padding: 0 9px;
  }

  .site-nav a {
    padding: 10px 12px;
  }

  .site-nav,
  body[data-lang="en"] .site-nav {
    font-size: 12px;
  }

  .hero {
    padding-top: 134px;
  }

  .primary-button,
  .secondary-button,
  .nav-action,
  .call-btn {
    white-space: normal;
    text-align: center;
  }

  .contact-link,
  .contact-link.strong {
    font-size: 16px;
  }

  body[data-lang="en"] h1 {
    font-size: 34px;
  }

  body[data-lang="en"] h2 {
    font-size: 26px;
  }
}

/* Homepage product-page layout */
.home-brand-hero {
  display: grid;
  min-height: 820px;
  place-items: center;
  padding: 154px 24px 110px;
  overflow: hidden;
  background: #f5f5f7;
  text-align: center;
}

.home-brand-inner {
  display: grid;
  justify-items: center;
  width: min(100%, 920px);
}

.home-brand-logo {
  width: clamp(176px, 19vw, 248px);
  height: auto;
  margin-bottom: 34px;
  border-radius: 8px;
  mix-blend-mode: multiply;
}

.home-brand-hero h1 {
  max-width: 880px;
  margin: 12px 0 20px;
  font-size: clamp(56px, 7vw, 86px);
  line-height: 1.04;
  letter-spacing: 0;
}

.home-brand-subtitle {
  margin: -4px 0 14px;
  color: #1d1d1f;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.35;
}

.home-brand-lead {
  max-width: 820px;
  margin: 0;
  color: #515154;
  font-size: 21px;
  line-height: 1.75;
}

.home-brand-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 30px;
}

.home-brand-tags span {
  padding: 7px 12px;
  border: 1px solid rgba(29, 29, 31, 0.16);
  border-radius: 999px;
  color: #424245;
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
}

.home-brand-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 34px;
}

.home-section {
  padding-top: 124px;
  padding-bottom: 124px;
}

.home-section .section-title {
  max-width: 850px;
  margin-right: auto;
  margin-bottom: 52px;
  margin-left: auto;
}

.home-section .section-title h2,
.home-contact-section h2 {
  margin-top: 10px;
  margin-bottom: 18px;
  font-size: 50px;
  line-height: 1.12;
  letter-spacing: 0;
}

.home-section .section-title p:not(.eyebrow),
.home-contact-section .section-title p:not(.eyebrow) {
  color: #6e6e73;
  font-size: 18px;
  line-height: 1.75;
}

.home-business-grid,
.home-ecosystem-grid,
.home-scenario-grid,
.home-advantage-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.home-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 30px;
  border: 1px solid rgba(29, 29, 31, 0.09);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 3px 14px rgba(0, 0, 0, 0.035);
  color: #1d1d1f;
  text-decoration: none;
  transition: border-color 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}

.home-card:hover {
  border-color: rgba(0, 113, 227, 0.24);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.07);
  transform: translateY(-4px);
}

.home-card h3 {
  margin: 16px 0 12px;
  font-size: 25px;
  line-height: 1.25;
  letter-spacing: 0;
}

.home-card p {
  margin: 0;
  color: #6e6e73;
  font-size: 15px;
  line-height: 1.78;
}

.home-business-card {
  min-height: 330px;
}

.home-card-index {
  color: #0071e3;
  font-size: 14px;
  font-weight: 800;
}

.home-ecosystem-section {
  width: 100%;
  max-width: none;
  padding-right: max(24px, calc((100% - 1180px) / 2));
  padding-left: max(24px, calc((100% - 1180px) / 2));
  background: #f5f5f7;
}

.home-subbrand-card {
  min-height: 320px;
}

.home-subbrand-label,
.home-scenario-card span {
  color: #0071e3;
  font-size: 14px;
  font-weight: 800;
}

.home-subbrand-card .text-link {
  align-self: flex-start;
  margin-top: auto;
  padding-top: 22px;
}

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

.home-scenario-card {
  min-height: 250px;
}

.home-advantages-section {
  width: 100%;
  max-width: none;
  padding-right: max(24px, calc((100% - 1180px) / 2));
  padding-left: max(24px, calc((100% - 1180px) / 2));
  background: #f5f5f7;
  color: #1d1d1f;
}

.home-advantages-section .section-title h2 {
  color: #1d1d1f;
}

.home-advantages-section .section-title p:not(.eyebrow) {
  color: #6e6e73;
}

.home-advantage-item {
  padding: 26px;
  border: 1px solid rgba(29, 29, 31, 0.09);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 3px 14px rgba(0, 0, 0, 0.035);
}

.home-advantage-item strong {
  color: #1d1d1f;
  font-size: 22px;
}

.home-advantage-item p {
  margin: 12px 0 0;
  color: #6e6e73;
  font-size: 15px;
  line-height: 1.78;
}

.home-contact-section {
  padding: 124px 24px;
  background: #fff;
  text-align: center;
}

.home-contact-inner {
  display: grid;
  justify-items: center;
  width: min(100%, 1000px);
  margin: 0 auto;
}

.home-contact-section .section-title {
  max-width: 780px;
  margin-bottom: 38px;
}

.home-contact-grid {
  display: grid;
  width: 100%;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 28px;
}

.home-contact-grid a {
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 20px 16px;
  border: 1px solid rgba(29, 29, 31, 0.09);
  border-radius: 8px;
  background: #fff;
  color: #1d1d1f;
  text-decoration: none;
  transition: border-color 0.22s ease, transform 0.22s ease;
}

.home-contact-grid a:hover {
  border-color: rgba(0, 113, 227, 0.24);
  transform: translateY(-3px);
}

.home-contact-grid span {
  color: #6e6e73;
  font-size: 13px;
  font-weight: 700;
}

.home-contact-grid strong {
  overflow-wrap: anywhere;
  font-size: 16px;
  line-height: 1.5;
}

@media (max-width: 1180px) {
  .home-brand-hero {
    min-height: 760px;
  }

  .home-business-grid,
  .home-ecosystem-grid,
  .home-advantage-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-business-card,
  .home-subbrand-card {
    min-height: 0;
  }
}

@media (max-width: 760px) {
  .home-brand-hero {
    min-height: auto;
    padding: 138px 20px 76px;
  }

  .home-brand-logo {
    width: 148px;
    margin-bottom: 24px;
  }

  .home-brand-hero h1 {
    margin-top: 9px;
    margin-bottom: 16px;
    font-size: 48px;
  }

  .home-brand-lead {
    font-size: 17px;
    line-height: 1.72;
  }

  .home-brand-subtitle {
    margin-bottom: 12px;
    font-size: 20px;
  }

  .home-brand-tags {
    gap: 8px;
    margin-top: 24px;
  }

  .home-brand-tags span {
    padding: 7px 10px;
    font-size: 12px;
  }

  .home-brand-actions {
    width: 100%;
    flex-direction: column;
    margin-top: 28px;
  }

  .home-brand-actions .primary-button,
  .home-brand-actions .secondary-button {
    width: 100%;
    justify-content: center;
  }

  .home-section,
  .home-contact-section {
    padding-top: 78px;
    padding-bottom: 78px;
  }

  .home-ecosystem-section,
  .home-advantages-section {
    padding-right: 16px;
    padding-left: 16px;
  }

  .home-section .section-title {
    margin-bottom: 34px;
  }

  .home-section .section-title h2,
  .home-contact-section h2 {
    font-size: 34px;
  }

  .home-section .section-title p:not(.eyebrow),
  .home-contact-section .section-title p:not(.eyebrow) {
    font-size: 16px;
  }

  .home-business-grid,
  .home-ecosystem-grid,
  .home-scenario-grid,
  .home-advantage-grid,
  .home-contact-grid {
    grid-template-columns: 1fr;
  }

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

  .home-card h3 {
    font-size: 23px;
  }

  .home-scenario-card {
    min-height: 0;
  }

  .home-advantage-item {
    padding: 22px;
  }

  .home-contact-section {
    padding-right: 16px;
    padding-left: 16px;
  }
}

@media (max-width: 420px) {
  .home-brand-hero h1 {
    font-size: 40px;
  }

  .home-brand-logo {
    width: 132px;
  }

  .home-section .section-title h2,
  .home-contact-section h2 {
    font-size: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
}