:root {
  --ink: #172033;
  --muted: #68748a;
  --blue: #155eef;
  --blue-dark: #0b43b7;
  --blue-soft: #eef4ff;
  --violet: #7048e8;
  --teal: #00a69a;
  --yellow: #f4b63f;
  --line: #e5e9f2;
  --surface: #f7f9fc;
  --white: #ffffff;
  --shell: 1200px;
  --header: 72px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}
body.nav-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.25; letter-spacing: 0; }
.shell { width: min(calc(100% - 48px), var(--shell)); margin-inline: auto; }
.skip-link { position: fixed; top: -60px; left: 20px; z-index: 999; padding: 10px 16px; color: #fff; background: var(--blue); border-radius: 4px; }
.skip-link:focus { top: 12px; }
.eyebrow { margin-bottom: 14px; color: var(--blue); font-size: 14px; font-weight: 700; }
.eyebrow::before { content: ""; display: inline-block; width: 24px; height: 3px; margin-right: 10px; vertical-align: middle; background: var(--teal); }
.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 24px;
  color: #fff;
  background: var(--blue);
  border: 1px solid var(--blue);
  border-radius: 5px;
  font-weight: 700;
  line-height: 1;
  transition: background-color .2s ease, border-color .2s ease, transform .2s ease;
}
.button:hover { background: var(--blue-dark); border-color: var(--blue-dark); transform: translateY(-2px); }
.button:focus-visible, .text-link:focus-visible, nav a:focus-visible, summary:focus-visible { outline: 3px solid rgba(21, 94, 239, .28); outline-offset: 3px; }
.button-small { min-height: 40px; padding: 0 18px; font-size: 14px; }
.button-secondary { color: var(--blue); background: transparent; }
.button-secondary:hover { color: #fff; }
.button-light { color: var(--blue); background: #fff; border-color: #fff; }
.button-light:hover { color: var(--blue-dark); background: #eef4ff; border-color: #eef4ff; }
.text-link { display: inline-flex; align-items: center; gap: 10px; color: var(--blue); font-weight: 700; }
.text-link i { transition: transform .2s ease; }
.text-link:hover i { transform: translateX(4px); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header);
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid transparent;
  transition: box-shadow .2s ease, border-color .2s ease;
}
.site-header.scrolled { border-color: var(--line); box-shadow: 0 10px 26px rgba(25, 42, 70, .07); }
.nav-shell { display: flex; height: 100%; align-items: center; }
.brand { display: inline-flex; min-width: 178px; align-items: center; white-space: nowrap; }
.brand img { flex: 0 0 auto; object-fit: contain; }
.brand-name { margin-left: 10px; font-size: 22px; font-weight: 800; }
.brand-en { margin: 4px 0 0 8px; color: #8190a8; font-size: 9px; font-weight: 700; }
.desktop-nav { display: flex; flex: 1; align-items: center; justify-content: center; gap: 32px; }
.desktop-nav a { position: relative; padding: 23px 0 19px; color: #3a465b; font-size: 15px; }
.desktop-nav a::after { content: ""; position: absolute; right: 50%; bottom: 13px; left: 50%; height: 2px; background: var(--blue); transition: right .2s ease, left .2s ease; }
.desktop-nav a:hover { color: var(--blue); }
.desktop-nav a:hover::after { right: 0; left: 0; }
.nav-actions { display: flex; min-width: 220px; align-items: center; justify-content: flex-end; gap: 20px; }
.login-link { color: #46546a; font-size: 14px; }
.login-link:hover { color: var(--blue); }
.menu-toggle { display: none; width: 42px; height: 42px; padding: 9px; background: #fff; border: 1px solid var(--line); border-radius: 5px; }
.menu-toggle span { display: block; width: 22px; height: 2px; margin: 4px auto; background: var(--ink); transition: transform .2s ease, opacity .2s ease; }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mobile-nav { position: fixed; top: var(--header); right: 0; left: 0; height: calc(100vh - var(--header)); padding: 24px; background: #fff; }
.mobile-nav a { display: block; padding: 15px 4px; border-bottom: 1px solid var(--line); font-weight: 700; }

.hero {
  position: relative;
  min-height: 650px;
  overflow: hidden;
  background-color: #f5f8ff;
  background-image: url("../images/home/plate2-1.png");
  background-repeat: no-repeat;
  background-position: calc(50% + 360px) 46%;
  background-size: min(47vw, 680px) auto;
}
.hero::before { content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 55%; background: rgba(245, 248, 255, .92); }
.hero::after { content: ""; position: absolute; top: 94px; right: 10%; width: 44px; height: 6px; background: var(--yellow); }
.hero-inner { position: relative; z-index: 2; display: flex; min-height: 570px; align-items: center; }
.hero-copy { width: min(610px, 52%); padding: 56px 0 94px; }
.hero h1 { margin-bottom: 24px; font-size: clamp(44px, 4.4vw, 68px); font-weight: 800; }
.hero h1 span { color: var(--blue); }
.hero-lead { max-width: 580px; margin-bottom: 30px; color: #536178; font-size: 19px; line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 22px; margin: 26px 0 0; padding: 0; list-style: none; color: #445169; font-size: 13px; }
.hero-tags i { margin-right: 5px; color: var(--teal); }
.hero-proof { position: absolute; right: 0; bottom: 0; left: 0; z-index: 3; background: rgba(255, 255, 255, .95); border-top: 1px solid rgba(210, 219, 234, .8); }
.proof-grid { display: grid; min-height: 80px; grid-template-columns: repeat(4, 1fr); }
.proof-grid div { display: flex; align-items: center; gap: 13px; padding: 18px 24px; border-right: 1px solid var(--line); }
.proof-grid div:last-child { border-right: 0; }
.proof-grid strong { color: var(--blue); font-size: 18px; }
.proof-grid span { color: var(--muted); font-size: 13px; }

.section { padding: 104px 0; }
.section-heading { margin-bottom: 50px; }
.section-heading h2, .flow-copy h2, .about-copy h2, .faq-intro h2, .contact-inner h2 { margin-bottom: 18px; font-size: clamp(30px, 3.1vw, 44px); }
.section-heading > p:last-child { max-width: 690px; margin-bottom: 0; color: var(--muted); }
.section-heading.centered { max-width: 790px; margin-right: auto; margin-left: auto; text-align: center; }
.section-heading.centered .eyebrow::before { display: none; }
.split-heading { display: grid; grid-template-columns: 1.15fr .85fr; align-items: end; gap: 80px; }

.problem-section { background: #fff; }
.problem-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.problem-card { position: relative; min-height: 292px; padding: 34px 28px 26px; overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 6px; transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.problem-card::after { content: ""; position: absolute; right: 0; bottom: 0; left: 0; height: 4px; background: var(--blue); transform: scaleX(0); transform-origin: left; transition: transform .25s ease; }
.problem-card:hover { border-color: #cdd9f3; box-shadow: 0 18px 44px rgba(34, 57, 104, .10); transform: translateY(-6px); }
.problem-card:hover::after { transform: scaleX(1); }
.problem-card > i { display: flex; width: 46px; height: 46px; align-items: center; justify-content: center; margin-bottom: 24px; color: var(--blue); background: var(--blue-soft); border-radius: 6px; font-size: 22px; }
.problem-card:nth-child(2) > i { color: var(--teal); background: #eaf9f7; }
.problem-card:nth-child(3) > i { color: var(--violet); background: #f1edff; }
.problem-card:nth-child(4) > i { color: #be7a00; background: #fff7e5; }
.card-index { position: absolute; top: 22px; right: 25px; color: #d7dfed; font-size: 28px; font-weight: 800; }
.problem-card h3 { margin-bottom: 12px; font-size: 20px; }
.problem-card p { min-height: 76px; margin-bottom: 20px; color: var(--muted); font-size: 14px; }
.problem-card a { color: var(--blue); font-size: 14px; font-weight: 700; }

.product-section { background: var(--surface); }
.product-tabs { display: grid; margin-bottom: 18px; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.product-tabs button { display: flex; min-height: 76px; align-items: center; gap: 14px; padding: 12px 18px; color: #3f4d64; text-align: left; background: #fff; border: 1px solid #dfe5ef; border-radius: 6px; cursor: pointer; box-shadow: 0 7px 18px rgba(38, 55, 88, .04); transition: color .2s ease, background .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease; }
.product-tabs button::before { content: attr(data-tab-number); color: #9aa9c2; font-size: 12px; font-weight: 800; }
.product-tabs button:hover { border-color: #afc3ec; transform: translateY(-2px); }
.product-tabs button[aria-selected="true"] { color: #fff; background: linear-gradient(135deg, #286ff5 0%, #7a48eb 100%); border-color: transparent; font-weight: 700; box-shadow: 0 12px 24px rgba(86, 70, 219, .22); }
.product-tabs button[aria-selected="true"]::before { color: rgba(255, 255, 255, .72); }
.product-panel { display: grid; min-height: 520px; grid-template-columns: .9fr 1.1fr; align-items: center; overflow: hidden; background: #fff; border: 1px solid var(--line); border-radius: 7px; }
.product-panel[hidden] { display: none; }
.panel-copy { position: relative; padding: 50px 48px; }
.panel-number { position: absolute; top: 24px; right: 30px; color: #e6ecf6; font-size: 48px; font-weight: 800; line-height: 1; }
.panel-copy h3 { margin-bottom: 18px; font-size: 32px; }
.panel-copy > p:not(.eyebrow) { margin-bottom: 20px; color: var(--muted); }
.feature-list { margin: 0 0 28px; padding: 0; list-style: none; }
.feature-list li { margin: 10px 0; color: #344159; font-size: 14px; }
.feature-list i { width: 22px; color: var(--teal); }
.product-visual { position: relative; display: flex; min-height: 520px; align-items: center; justify-content: center; overflow: hidden; background: #eef3ff; }
.product-visual::before { content: ""; position: absolute; top: 0; bottom: 0; left: 0; width: 6px; background: var(--violet); }
.product-visual img { position: relative; z-index: 1; width: 88%; height: auto; object-fit: contain; }
.ui-visual img { width: 93%; box-shadow: 0 18px 38px rgba(37, 55, 89, .18); }
.illustration-visual img { width: min(78%, 520px); }
.trace-visual { background: #fff7e8; }
.visual-label { position: absolute; top: 25px; right: 25px; z-index: 2; padding: 5px 12px; color: var(--blue); background: #fff; border: 1px solid #dbe4f5; border-radius: 4px; font-size: 12px; font-weight: 700; }

.capability-section { background: #fff; }
.capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.capability-grid article { position: relative; min-height: 235px; padding: 38px 34px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.capability-grid article > span { position: absolute; top: 22px; right: 24px; color: #dfe5f0; font-size: 28px; font-weight: 800; }
.capability-grid article > i { margin-bottom: 25px; color: var(--blue); font-size: 27px; }
.capability-grid article:nth-child(2n) > i { color: var(--violet); }
.capability-grid article:nth-child(3n) > i { color: var(--teal); }
.capability-grid h3 { margin-bottom: 12px; font-size: 20px; }
.capability-grid p { margin-bottom: 0; color: var(--muted); font-size: 14px; }

.flow-section { position: relative; overflow: hidden; color: #fff; background: #14264b url("../images/produceReport/background_withoutText.jpg") center/cover no-repeat; }
.flow-section::before { content: ""; position: absolute; inset: 0; background: rgba(8, 26, 64, .74); }
.flow-shell { position: relative; z-index: 1; display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 80px; }
.flow-copy .eyebrow { color: #7ae5d9; }
.flow-copy h2 { color: #fff; }
.flow-copy > p:not(.eyebrow) { margin-bottom: 28px; color: #cbd5e9; }
.flow-list { display: grid; margin: 0; padding: 0; grid-template-columns: repeat(3, 1fr); gap: 14px; list-style: none; counter-reset: flow; }
.flow-list li { position: relative; min-height: 138px; padding: 30px 20px; background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .17); border-radius: 6px; }
.flow-list li::before { counter-increment: flow; content: "0" counter(flow); display: block; margin-bottom: 14px; color: #6f97ef; font-size: 13px; font-weight: 800; }
.flow-list strong, .flow-list span { display: block; }
.flow-list strong { margin-bottom: 3px; color: #fff; }
.flow-list span { color: #bdc9df; font-size: 13px; }

.service-section { background: #fff; }
.service-card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card { overflow: hidden; background: #fff; border: 1px solid #dde5f1; border-radius: 7px; box-shadow: 0 14px 36px rgba(39, 57, 94, .07); transition: transform .25s ease, box-shadow .25s ease; }
.service-card:hover { transform: translateY(-6px); box-shadow: 0 22px 44px rgba(39, 57, 94, .12); }
.service-card-art { position: relative; display: flex; min-height: 166px; align-items: center; padding: 28px 34px; overflow: hidden; color: var(--blue); background: linear-gradient(180deg, #bfd5ff 0%, #eff5ff 70%, #fff 100%); }
.service-card-art::after { content: "> > > > >"; position: absolute; bottom: 14px; left: 34px; color: #8ab1ff; font-size: 19px; font-weight: 800; word-spacing: 5px; }
.service-card-art span { font-size: 58px; font-weight: 800; line-height: 1; }
.service-card-art i { position: absolute; top: 30px; right: 34px; display: flex; width: 84px; height: 70px; align-items: center; justify-content: center; color: #fff; background: rgba(89, 128, 244, .62); border: 2px solid rgba(255, 255, 255, .68); border-radius: 7px; box-shadow: 0 12px 26px rgba(39, 100, 230, .23); font-size: 29px; backdrop-filter: blur(5px); }
.service-card:nth-child(2) .service-card-art { color: #7443e4; background: linear-gradient(180deg, #d1c1ff 0%, #f1edff 70%, #fff 100%); }
.service-card:nth-child(2) .service-card-art::after { color: #aa8df2; }
.service-card:nth-child(2) .service-card-art i { background: rgba(118, 71, 226, .58); }
.service-card:nth-child(3) .service-card-art { color: #00998e; background: linear-gradient(180deg, #bceee8 0%, #edfbf9 70%, #fff 100%); }
.service-card:nth-child(3) .service-card-art::after { color: #6bcfc5; }
.service-card:nth-child(3) .service-card-art i { background: rgba(0, 166, 154, .55); }
.service-card-body { padding: 8px 34px 34px; }
.service-card-body h3 { margin-bottom: 14px; font-size: 23px; }
.service-card-body p { min-height: 76px; margin-bottom: 20px; color: var(--muted); font-size: 14px; }
.service-card-body ul { display: flex; flex-wrap: wrap; gap: 9px; margin: 0; padding: 0; list-style: none; }
.service-card-body li { padding: 6px 11px; color: #4c5a71; background: #f7f9fc; border: 1px solid #dfe5ed; border-radius: 4px; font-size: 12px; }

.industries-section { background: #fff; }
.industry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.industry-card { position: relative; min-height: 390px; overflow: hidden; background-position: center; background-size: cover; border-radius: 6px; }
.industry-card::before { content: ""; position: absolute; inset: 0; background: rgba(17, 31, 58, .55); transition: background .25s ease; }
.industry-card:hover::before { background: rgba(21, 94, 239, .72); }
.industry-electronics { background-image: url("../images/home/banner2.jpg"); background-position: 75% center; }
.industry-machinery { background-image: url("../images/home/banner3.jpg"); background-position: 35% center; }
.industry-auto { background-image: url("../images/home/banner4.jpg"); background-position: 60% center; }
.industry-more { background-image: url("../images/Information/news.jpg"); background-position: center; }
.industry-content { position: absolute; right: 0; bottom: 0; left: 0; z-index: 1; padding: 28px 26px; color: #fff; }
.industry-content > span { display: inline-block; margin-bottom: 16px; color: #96eee5; font-size: 13px; font-weight: 700; }
.industry-content h3 { min-height: 56px; margin-bottom: 12px; font-size: 23px; }
.industry-content p { min-height: 72px; margin-bottom: 20px; color: #e1e8f4; font-size: 14px; }
.industry-content a { display: flex; width: 42px; height: 42px; align-items: center; justify-content: center; color: var(--blue); background: #fff; border-radius: 50%; }

.network-section { overflow: hidden; background: #f6f8fc; }
.network-stage { display: grid; min-height: 500px; grid-template-columns: 1.45fr .55fr; overflow: hidden; background: #fff; border: 1px solid #e0e6f0; border-radius: 7px; box-shadow: 0 18px 46px rgba(38, 56, 92, .07); }
.network-map { position: relative; min-height: 500px; overflow: hidden; background: radial-gradient(circle at 34% 42%, rgba(111, 143, 255, .22), transparent 31%), url("../images/home/plate4-1.png") 38% 50% / 440px auto no-repeat, #f4f8ff; }
.network-map::before { content: ""; position: absolute; inset: 0; opacity: .45; background-image: linear-gradient(rgba(81, 117, 194, .08) 1px, transparent 1px), linear-gradient(90deg, rgba(81, 117, 194, .08) 1px, transparent 1px); background-size: 42px 42px; }
.map-silhouette { position: absolute; top: 17%; right: 9%; bottom: 12%; left: 8%; background: linear-gradient(135deg, rgba(255, 255, 255, .92), rgba(207, 224, 255, .88)); clip-path: polygon(5% 45%, 13% 31%, 25% 28%, 34% 17%, 47% 13%, 57% 23%, 70% 24%, 79% 31%, 92% 37%, 86% 49%, 94% 59%, 81% 66%, 73% 78%, 60% 76%, 52% 88%, 39% 76%, 27% 76%, 19% 66%, 8% 61%); filter: drop-shadow(0 18px 26px rgba(61, 99, 173, .15)); }
.map-pin { position: absolute; z-index: 3; display: flex; align-items: center; gap: 8px; padding: 7px 11px; color: #fff; background: var(--blue); border-radius: 4px; box-shadow: 0 8px 20px rgba(21, 94, 239, .24); font-size: 12px; }
.map-pin i { width: 7px; height: 7px; background: #fff; border-radius: 50%; box-shadow: 0 0 0 4px rgba(255, 255, 255, .24); }
.map-pin strong { white-space: nowrap; }
.pin-nanjing { top: 42%; left: 62%; }
.pin-suzhou { top: 51%; left: 69%; background: #7646e9; }
.pin-nantong { top: 31%; left: 73%; background: #008e85; }
.pin-shenzhen { top: 69%; left: 61%; background: #7646e9; }
.map-route { position: absolute; z-index: 2; height: 2px; background: linear-gradient(90deg, var(--blue), #8a57ea); transform-origin: left center; }
.route-east { top: 48%; left: 66%; width: 88px; transform: rotate(18deg); }
.route-south { top: 50%; left: 66%; width: 120px; transform: rotate(87deg); }
.network-summary { display: flex; flex-direction: column; justify-content: center; padding: 48px 38px; color: #fff; background: linear-gradient(155deg, #1764ef 0%, #7441df 100%); }
.network-kicker { margin-bottom: 16px; color: #b8cbff; font-size: 11px; font-weight: 800; }
.network-summary h3 { margin-bottom: 16px; color: #fff; font-size: 28px; }
.network-summary > p { color: #e6ebff; font-size: 14px; }
.network-coverage { display: flex; align-items: flex-end; gap: 12px; margin: 22px 0 10px; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .22); }
.network-coverage strong { color: #fff; font-size: 52px; line-height: 1; }
.network-coverage span { padding-bottom: 4px; color: #cbd6ff; font-size: 13px; }
.network-summary .coverage-list { margin-bottom: 0; color: #cbd6ff; font-size: 12px; }
.location-grid { display: grid; margin-top: 18px; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.location-grid article { min-height: 168px; padding: 24px 22px; background: #fff; border: 1px solid #e0e6f0; border-radius: 6px; }
.location-grid article > span { display: block; margin-bottom: 8px; color: var(--blue); font-size: 12px; font-weight: 700; }
.location-grid h3 { margin-bottom: 8px; font-size: 20px; }
.location-grid p { margin-bottom: 0; color: var(--muted); font-size: 13px; }

.about-section { background: var(--surface); }
.about-grid { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: 80px; }
.about-photo { min-height: 530px; background: url("../images/aboutUs/introduce-photo1.jpg") center/cover no-repeat; border-radius: 6px; }
.about-copy > p:not(.eyebrow) { color: var(--muted); }
.service-locations { margin: 30px 0; border-top: 1px solid var(--line); }
.service-locations > div { display: grid; padding: 15px 0; grid-template-columns: 86px 1fr; border-bottom: 1px solid var(--line); }
.service-locations dt { color: var(--ink); font-weight: 700; }
.service-locations dd { margin: 0; color: var(--muted); }

.faq-section { background: #fff; }
.faq-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: 90px; }
.faq-intro > p:not(.eyebrow) { color: var(--muted); }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; min-height: 76px; align-items: center; justify-content: space-between; gap: 20px; cursor: pointer; font-size: 18px; font-weight: 700; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary i { color: var(--blue); transition: transform .2s ease; }
.faq-list details[open] summary i { transform: rotate(45deg); }
.faq-list details p { padding: 0 46px 24px 0; color: var(--muted); }

.contact-band { padding: 72px 0; color: #fff; background: linear-gradient(105deg, #155eef 0%, #7a35e8 100%); }
.contact-inner { display: flex; align-items: center; justify-content: space-between; gap: 60px; }
.contact-inner > div:first-child { max-width: 690px; }
.contact-inner .eyebrow { color: #a4f0e7; }
.contact-inner h2 { color: #fff; }
.contact-inner p:last-child { margin-bottom: 0; color: #dce6ff; }
.contact-actions { display: flex; flex-direction: column; align-items: stretch; gap: 16px; }
.phone-link { display: flex; align-items: center; justify-content: center; gap: 12px; color: #fff; }
.phone-link i { font-size: 22px; }
.phone-link span { font-size: 12px; }
.phone-link strong { display: block; font-size: 18px; }

.site-footer { color: #c0cbdd; background: #090c13; }
.footer-grid { display: grid; padding-top: 62px; padding-bottom: 48px; grid-template-columns: 1.5fr repeat(3, 1fr) .8fr; gap: 44px; }
.brand-footer { min-width: 0; margin-bottom: 18px; color: #fff; }
.footer-brand p { max-width: 250px; color: #8f9bb0; }
.footer-grid h2 { margin-bottom: 18px; color: #fff; font-size: 15px; }
.footer-grid > div:not(.footer-brand) > a { display: block; margin: 9px 0; color: #9eabc0; font-size: 13px; }
.footer-grid a:hover { color: #fff; }
.footer-grid address { margin-top: 10px; color: #9eabc0; font-size: 13px; font-style: normal; }
.footer-qr img { padding: 5px; background: #fff; border-radius: 4px; }
.footer-bottom { display: flex; min-height: 66px; align-items: center; gap: 28px; color: #748199; border-top: 1px solid rgba(255, 255, 255, .09); font-size: 12px; }
.footer-bottom a:last-child { margin-left: auto; }
.floating-contact { position: fixed; right: 18px; bottom: 24px; z-index: 70; display: flex; width: 56px; height: 56px; flex-direction: column; align-items: center; justify-content: center; color: #fff; background: var(--blue); border-radius: 50%; box-shadow: 0 10px 24px rgba(21, 94, 239, .32); font-size: 11px; }
.floating-contact i { margin-bottom: 1px; font-size: 18px; }
.demo-dialog { width: min(calc(100% - 32px), 780px); max-height: calc(100vh - 32px); padding: 0; overflow: auto; background: #fff; border: 0; border-radius: 7px; box-shadow: 0 28px 80px rgba(7, 20, 49, .26); }
.demo-dialog::backdrop { background: rgba(9, 19, 40, .62); backdrop-filter: blur(3px); }
.demo-form { padding: 34px; }
.dialog-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; }
.dialog-head .eyebrow { margin-bottom: 6px; }
.dialog-head h2 { margin-bottom: 0; font-size: 30px; }
.dialog-close { display: flex; width: 40px; height: 40px; flex: 0 0 auto; align-items: center; justify-content: center; color: var(--muted); background: #fff; border: 1px solid var(--line); border-radius: 50%; cursor: pointer; }
.dialog-lead { margin: 15px 0 25px; color: var(--muted); }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.form-grid label > span { display: block; margin-bottom: 6px; color: #39465c; font-size: 13px; font-weight: 700; }
.form-grid input, .form-grid select, .form-grid textarea { width: 100%; min-height: 46px; padding: 10px 13px; color: var(--ink); background: #fff; border: 1px solid #d9e0ec; border-radius: 4px; outline: 0; }
.form-grid textarea { resize: vertical; }
.form-grid input:focus, .form-grid select:focus, .form-grid textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(21, 94, 239, .11); }
.phone-field > div { display: flex; }
.phone-field input { min-width: 0; border-radius: 4px 0 0 4px; }
.phone-field button { flex: 0 0 108px; color: var(--blue); background: var(--blue-soft); border: 1px solid #d9e0ec; border-left: 0; border-radius: 0 4px 4px 0; cursor: pointer; font-size: 13px; font-weight: 700; }
.phone-field button:disabled { color: #8b96a8; cursor: not-allowed; }
.full-field { grid-column: 1 / -1; }
.consent-field { display: flex; align-items: flex-start; gap: 9px; margin-top: 18px; color: var(--muted); font-size: 13px; }
.consent-field input { margin-top: 6px; accent-color: var(--blue); }
.form-footer { display: flex; min-height: 56px; align-items: flex-end; justify-content: space-between; gap: 20px; margin-top: 18px; }
.form-footer p { margin: 0; color: var(--muted); font-size: 13px; }
.form-footer p.error { color: #bc2e2e; }
.form-footer p.success { color: #087f67; }

@media (max-width: 1080px) {
  .desktop-nav { gap: 19px; }
  .nav-actions { min-width: 180px; }
  .login-link { display: none; }
  .hero { background-position: calc(50% + 320px) 46%; background-size: 54vw auto; }
  .hero-copy { width: 57%; }
  .problem-grid { grid-template-columns: repeat(2, 1fr); }
  .service-card-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; }
  .service-card-art { padding-right: 24px; padding-left: 24px; }
  .service-card-art::after { left: 24px; }
  .service-card-art i { right: 24px; }
  .service-card-body { padding-right: 24px; padding-left: 24px; }
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .network-stage { grid-template-columns: 1.25fr .75fr; }
  .location-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1.4fr repeat(3, 1fr); }
  .footer-qr { display: none; }
}

@media (max-width: 840px) {
  :root { --header: 66px; }
  .shell { width: min(calc(100% - 32px), var(--shell)); }
  .desktop-nav, .nav-actions { display: none; }
  .menu-toggle { display: block; margin-left: auto; }
  .brand { min-width: 0; }
  .hero { min-height: 700px; background-position: 50% 92%; background-size: min(94vw, 560px) auto; }
  .hero::before { width: 100%; height: 61%; background: rgba(245, 248, 255, .96); }
  .hero::after { top: auto; right: 16px; bottom: 185px; }
  .hero-inner { min-height: 620px; align-items: flex-start; }
  .hero-copy { width: 100%; padding: 66px 0 250px; }
  .hero h1 { font-size: 42px; }
  .hero-lead { font-size: 17px; }
  .hero-tags { gap: 9px 18px; }
  .hero-proof { position: absolute; }
  .proof-grid { min-height: 80px; grid-template-columns: repeat(2, 1fr); }
  .proof-grid div { padding: 12px; }
  .proof-grid div:nth-child(2) { border-right: 0; }
  .proof-grid div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .proof-grid strong { font-size: 15px; }
  .proof-grid span { font-size: 11px; }
  .section { padding: 76px 0; }
  .split-heading { grid-template-columns: 1fr; gap: 8px; }
  .section-heading { margin-bottom: 38px; }
  .product-tabs { grid-template-columns: repeat(2, 1fr); }
  .product-panel { grid-template-columns: 1fr; }
  .panel-copy { padding: 42px 28px; }
  .product-visual { min-height: 380px; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-shell, .about-grid, .faq-grid { grid-template-columns: 1fr; gap: 46px; }
  .service-card-grid { grid-template-columns: 1fr; }
  .service-card { display: grid; grid-template-columns: .72fr 1.28fr; }
  .service-card-art { min-height: 100%; }
  .service-card-body { padding-top: 30px; }
  .network-stage { grid-template-columns: 1fr; }
  .network-map { min-height: 430px; }
  .network-summary { padding: 38px 34px; }
  .about-photo { min-height: 380px; }
  .contact-inner { align-items: flex-start; flex-direction: column; gap: 32px; }
  .footer-grid { grid-template-columns: 1.4fr repeat(2, 1fr); }
  .footer-grid > div:nth-child(4) { grid-column: 2 / -1; }
}

@media (max-width: 560px) {
  .shell { width: min(calc(100% - 28px), var(--shell)); }
  .brand-en { display: none; }
  .hero { min-height: 744px; background-position: 50% 83%; background-size: 106vw auto; }
  .hero-inner { min-height: 654px; }
  .hero-copy { padding-top: 48px; }
  .hero h1 { font-size: 36px; }
  .hero-lead { font-size: 16px; line-height: 1.7; }
  .hero-actions .button { width: 100%; }
  .hero-tags { display: grid; grid-template-columns: 1fr 1fr; }
  .hero-tags li:last-child { grid-column: 1 / -1; }
  .proof-grid span { display: none; }
  .proof-grid div { justify-content: center; }
  .section { padding: 66px 0; }
  .section-heading h2, .flow-copy h2, .about-copy h2, .faq-intro h2, .contact-inner h2 { font-size: 29px; }
  .problem-grid, .industry-grid { grid-template-columns: 1fr; }
  .problem-card { min-height: 260px; }
  .product-tabs { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; }
  .product-tabs button { min-width: 190px; scroll-snap-align: start; }
  .panel-copy { padding: 38px 22px; }
  .panel-copy h3 { font-size: 27px; }
  .product-visual { min-height: 300px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-grid article { min-height: 205px; }
  .flow-list { grid-template-columns: repeat(2, 1fr); }
  .flow-list li { min-height: 126px; }
  .service-card { display: block; }
  .service-card-art { min-height: 150px; }
  .service-card-body { padding: 4px 22px 26px; }
  .service-card-body p { min-height: 0; }
  .network-map { min-height: 350px; background-size: 320px auto; }
  .network-summary { padding: 32px 24px; }
  .location-grid { grid-template-columns: 1fr; }
  .map-pin { padding: 6px 8px; font-size: 10px; }
  .pin-nanjing { left: 53%; }
  .pin-suzhou { left: 62%; }
  .pin-nantong { left: 64%; }
  .pin-shenzhen { left: 50%; }
  .about-photo { min-height: 300px; }
  .service-locations > div { grid-template-columns: 1fr; gap: 4px; }
  .faq-list summary { min-height: 68px; font-size: 16px; }
  .contact-actions, .contact-actions .button { width: 100%; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px 26px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-grid > div:nth-child(4) { grid-column: 1 / -1; }
  .footer-bottom { align-items: flex-start; flex-direction: column; gap: 6px; padding: 18px 0; }
  .footer-bottom a:last-child { margin-left: 0; }
  .floating-contact { right: 14px; bottom: 16px; }
  .demo-form { padding: 24px 18px; }
  .form-grid { grid-template-columns: 1fr; gap: 14px; }
  .full-field { grid-column: auto; }
  .form-footer { align-items: stretch; flex-direction: column; }
  .form-footer .button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}