:root {
  --navy: #071e2b;
  --navy-soft: #0c3041;
  --ink: #153641;
  --muted: #637b84;
  --teal: #0c7471;
  --teal-bright: #42d8c8;
  --teal-soft: #e9f7f6;
  --paper: #f5fafb;
  --white: #ffffff;
  --line: #dbe7ea;
  --amber: #c5863f;
  --shadow: 0 24px 60px rgba(17, 54, 68, .12);
  --width: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
body.menu-open { overflow: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; }
button, input, textarea, select { font: inherit; }
.container { width: min(calc(100% - 48px), var(--width)); margin-inline: auto; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: -60px; left: 16px; z-index: 1000;
  background: #fff; color: var(--navy); padding: 10px 16px;
  border-radius: 6px; box-shadow: var(--shadow);
}
.skip-link:focus { top: 12px; }
.lang-zh, .lang-en { display: block; }
.lang-en { margin-top: 2px; opacity: .62; font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid rgba(193, 211, 216, .72);
  backdrop-filter: blur(14px);
}
.header-inner {
  height: 76px; display: flex; align-items: center; gap: 24px;
}
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; min-width: 172px; }
.brand-mark {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 10px; background: var(--teal); color: #fff; font-weight: 800;
  letter-spacing: -.06em;
}
.brand-copy strong { display: block; font-size: 19px; line-height: 1.1; letter-spacing: .03em; }
.brand-copy small { display: block; margin-top: 3px; font-size: 8px; color: #83979e; letter-spacing: .1em; }
.main-nav { display: flex; align-items: center; justify-content: center; gap: 21px; margin-inline: auto; }
.main-nav a {
  color: #35545e; text-decoration: none; text-align: center;
  font-size: 12px; font-weight: 600; white-space: nowrap;
}
.main-nav .lang-zh { display: inline; }
.main-nav .lang-en { font-size: 7px; margin-top: 1px; }
.main-nav a[aria-current="page"] { color: var(--teal); }
.header-contact { display: flex; align-items: center; gap: 14px; margin-left: 8px; }
.header-phone { text-decoration: none; font-size: 14px; font-weight: 750; }
.header-phone small { display: block; font-size: 8px; color: #8a9ca2; font-weight: 500; letter-spacing: .05em; }
.button {
  min-height: 48px; padding: 10px 20px; display: inline-flex;
  flex-direction: column; align-items: center; justify-content: center;
  border: 1px solid transparent; border-radius: 7px; text-decoration: none;
  font-size: 14px; font-weight: 750; line-height: 1.25; cursor: pointer;
}
.button .lang-en { margin-top: 3px; font-size: 8px; }
.button-primary { background: var(--teal); color: #fff; box-shadow: 0 10px 22px rgba(12,116,113,.18); }
.button-primary:hover { background: #095f5c; }
.button-outline { border-color: #b8d4d6; color: #24525c; background: rgba(255,255,255,.7); }
.button-light { background: #fff; color: var(--navy); }
.button-ghost { border-color: rgba(255,255,255,.3); color: #fff; }
.button-compact { min-height: 38px; padding: 7px 13px; font-size: 11px; }
.button-compact .lang-en { font-size: 6px; }
.nav-toggle {
  display: none; width: 42px; height: 42px; margin-left: auto; padding: 10px;
  border: 1px solid var(--line); border-radius: 7px; background: #fff;
}
.nav-toggle > span:not(.sr-only) { display: block; height: 2px; margin: 4px 0; background: var(--navy); }

.hero-park {
  position: relative; overflow: hidden;
  background:
    radial-gradient(circle at 20% 16%, rgba(49,177,165,.15), transparent 26%),
    linear-gradient(135deg, #f3fbfb 0%, #edf8f8 50%, #e7f1f5 100%);
  border-bottom: 1px solid var(--line);
}
.hero-park:before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(15,84,91,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(15,84,91,.045) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(90deg, rgba(0,0,0,.75), transparent 84%);
}
.hero-grid {
  position: relative; display: grid; grid-template-columns: .9fr 1.1fr;
  align-items: center; gap: 42px; min-height: 660px; padding-block: 72px 66px;
}
.eyebrow, .eyebrow-text { color: var(--teal); font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.eyebrow { display: flex; align-items: center; gap: 10px; }
.eyebrow > span { width: 28px; height: 2px; background: var(--teal-bright); }
.hero-copy h1 {
  margin: 20px 0 0; color: #0d3440; font-size: clamp(44px, 4.5vw, 68px);
  line-height: 1.04; letter-spacing: -.055em;
}
.hero-copy h1 em { display: inline-block; color: var(--teal); font-style: normal; }
.hero-copy h1 small {
  display: block; max-width: 560px; margin-top: 16px; color: #7b9299;
  font-size: 14px; line-height: 1.5; letter-spacing: .035em; font-weight: 500;
}
.hero-lead { max-width: 580px; margin: 25px 0 0; color: #4f6a74; font-size: 16px; line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-actions .button { min-width: 176px; }
.monitor-preview {
  border: 1px solid rgba(54,152,150,.28); border-radius: 16px; overflow: hidden;
  background: var(--navy); box-shadow: 0 34px 80px rgba(7,35,49,.24);
}
.monitor-top {
  min-height: 54px; display: flex; align-items: center; justify-content: space-between;
  gap: 18px; padding: 10px 20px; background: var(--navy-soft);
  border-bottom: 1px solid rgba(105,202,194,.15); color: #e0eef2;
}
.monitor-top .lang-zh { font-size: 15px; font-weight: 700; }
.monitor-top .lang-en { font-size: 8px; color: #7294a0; }
.live-chip {
  display: inline-flex; align-items: center; gap: 7px; padding: 6px 10px;
  border-radius: 999px; background: rgba(24,184,159,.12); color: #5ddfcc;
  font-size: 10px; font-weight: 700; white-space: nowrap;
}
.live-chip i, .live-status i {
  width: 7px; height: 7px; border-radius: 50%; background: var(--teal-bright);
  animation: livepulse 2s infinite;
}
@keyframes livepulse {
  0% { box-shadow: 0 0 0 0 rgba(66,216,200,.45); }
  70% { box-shadow: 0 0 0 8px rgba(66,216,200,0); }
  100% { box-shadow: 0 0 0 0 rgba(66,216,200,0); }
}
.monitor-body { display: grid; grid-template-columns: 1fr 190px; min-height: 455px; }
.park-map { position: relative; overflow: hidden; min-height: 455px; }
.map-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(80,190,181,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(80,190,181,.06) 1px, transparent 1px);
  background-size: 27px 27px;
}
.park-map svg { position: absolute; inset: 38px 24px 35px; width: calc(100% - 48px); height: calc(100% - 73px); }
.map-node {
  position: absolute; width: 12px; height: 12px; border-radius: 50%;
  background: var(--teal-bright); border: 2px solid #e8fffc;
  box-shadow: 0 0 0 6px rgba(66,216,200,.11), 0 0 18px rgba(66,216,200,.6);
}
.map-node:after {
  content: attr(data-label); position: absolute; left: 17px; top: -4px;
  white-space: nowrap; color: #9ab8c1; font-size: 9px;
}
.map-node.n1 { left: 13%; top: 64%; }
.map-node.n2 { left: 34%; top: 45%; }
.map-node.n3 { left: 61%; top: 56%; }
.map-node.n4 { left: 82%; top: 43%; }
.map-node.n5 { left: 45%; top: 20%; }
.map-node.warning { background: #e7a04b; box-shadow: 0 0 0 6px rgba(231,160,75,.12), 0 0 18px rgba(231,160,75,.45); }
.scan-line {
  position: absolute; top: 18px; bottom: 18px; width: 125px;
  background: linear-gradient(90deg, transparent, rgba(70,215,199,.09), transparent);
  animation: scanline 5s linear infinite;
}
@keyframes scanline { from { transform: translateX(-140px); } to { transform: translateX(620px); } }
.preview-disclaimer {
  position: absolute; right: 18px; bottom: 15px; color: rgba(143,190,198,.42);
  font-size: 8px; letter-spacing: .08em;
}
.monitor-side { padding: 24px 17px; border-left: 1px solid rgba(120,216,208,.12); }
.mini-label { color: #7498a4; font-size: 8px; letter-spacing: .12em; }
.monitor-side h2 { margin: 4px 0 18px; color: #d8ebef; font-size: 16px; }
.live-status {
  display: flex; align-items: center; gap: 10px; margin-bottom: 10px; padding: 10px;
  border: 1px solid rgba(120,216,208,.13); border-radius: 8px;
  background: rgba(8,43,58,.76); color: #d6e8ec;
}
.live-status i { width: 6px; height: 6px; flex: 0 0 auto; }
.live-status strong { display: block; font-size: 12px; }
.live-status small { display: block; margin-top: 2px; color: #7899a5; font-size: 8px; }
.live-status.warning i { background: #e7a04b; animation: none; }
.data-bars { height: 108px; display: flex; align-items: end; gap: 5px; margin-top: 20px; }
.data-bars i { flex: 1; border-radius: 2px 2px 0 0; background: linear-gradient(180deg, #50d8c7, #1e6679); opacity: .86; }
.monitor-footer {
  min-height: 42px; display: flex; align-items: center; gap: 24px; padding: 0 20px;
  border-top: 1px solid rgba(120,216,208,.12); color: #7195a2; font-size: 9px;
}

.capability-strip { background: #fff; border-bottom: 1px solid var(--line); }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.capability-grid article { padding: 34px 34px; border-right: 1px solid var(--line); }
.capability-grid article:first-child { border-left: 1px solid var(--line); }
.capability-grid article > span { color: #8b9da4; font-size: 8px; letter-spacing: .11em; }
.capability-grid h2 { margin: 11px 0 1px; font-size: 23px; letter-spacing: -.02em; }
.capability-grid small { color: #8a9ca2; font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
.capability-grid p { margin: 13px 0 0; color: #5e757d; font-size: 14px; line-height: 1.8; }

.section { padding-block: 86px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.section-heading h2 { margin: 8px 0 2px; font-size: clamp(28px, 3vw, 42px); letter-spacing: -.035em; }
.section-heading small { color: #84979e; font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
.section-heading > a, .text-link { color: var(--teal); text-decoration: none; font-size: 13px; font-weight: 700; }
.home-projects { background: var(--paper); }
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.case-card {
  display: block; padding: 28px; border: 1px solid var(--line); border-radius: 12px;
  background: #fff; min-height: 235px;
}
.case-region { color: var(--teal); font-size: 10px; font-weight: 750; letter-spacing: .1em; }
.case-card h3 { margin: 30px 0 10px; font-size: 24px; }
.case-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.case-card a { display: inline-block; margin-top: 22px; color: var(--teal); text-decoration: none; font-size: 12px; font-weight: 700; }
.product-preview { background: #fff; }
.product-tile-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.product-tile-grid a {
  min-height: 150px; padding: 14px 20px 20px; border: 1px solid var(--line); border-radius: 9px;
  text-decoration: none; background: linear-gradient(180deg, #fff, #f9fcfc);
  transition: .18s ease;
}
.product-tile-grid a:hover { transform: translateY(-3px); border-color: #8ec9c7; box-shadow: 0 15px 30px rgba(18,80,87,.07); }
.product-tile-media { display: block; height: 170px; margin: 0 -6px 15px; overflow: hidden; border-radius: 6px; background: #f4f8f8; }
.product-tile-media img { width: 100%; height: 100%; object-fit: contain; transition: transform .22s ease; }
.product-tile-grid a:hover .product-tile-media img { transform: scale(1.035); }
.product-tile-grid strong { display: block; font-size: 18px; }
.product-tile-grid small { display: block; margin-top: 3px; color: #899ba2; font-size: 8px; letter-spacing: .08em; text-transform: uppercase; }
.product-tile-grid .product-tile-model { display: block; margin-top: 20px; color: var(--teal); font-size: 12px; font-weight: 700; }
.field-gallery-section { background: #f7fafb; }
.section-heading-note { max-width: 390px; color: var(--muted); font-size: 12px; line-height: 1.75; }
.field-gallery { display: grid; grid-template-columns: 1.2fr .8fr; grid-template-rows: repeat(2, minmax(220px, 1fr)); gap: 12px; }
.field-gallery figure { position: relative; min-height: 220px; margin: 0; overflow: hidden; border-radius: 12px; background: #dfe9eb; }
.field-gallery-main { grid-row: 1 / 3; }
.field-gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.field-gallery figure:hover img { transform: scale(1.025); }
.field-gallery figcaption {
  position: absolute; inset: auto 0 0; display: grid; gap: 2px; padding: 52px 22px 20px;
  color: #fff; background: linear-gradient(transparent, rgba(5, 29, 42, .86));
}
.field-gallery figcaption span { color: #64d8c9; font-size: 8px; letter-spacing: .12em; }
.field-gallery figcaption strong { font-size: 20px; }
.field-gallery figcaption small { color: #a9c1c9; font-size: 8px; letter-spacing: .07em; text-transform: uppercase; }
.process-preview { background: #f7fafb; }
.process-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; align-items: start; }
.process-grid h2 { margin: 9px 0 13px; font-size: clamp(30px, 3vw, 43px); letter-spacing: -.04em; }
.process-grid p { color: var(--muted); line-height: 1.85; }
.process-steps { list-style: none; padding: 0; margin: 0; }
.process-steps li { display: grid; grid-template-columns: 56px 1fr; gap: 16px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.process-steps > li > span { color: var(--teal); font-size: 12px; letter-spacing: .1em; font-weight: 700; }
.process-steps strong { display: block; font-size: 18px; }
.process-steps small { display: block; margin-top: 3px; color: #85979e; font-size: 8px; letter-spacing: .08em; text-transform: uppercase; }
.contact-band { padding-block: 58px; background: var(--navy); color: #fff; }
.contact-band-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.contact-band .eyebrow-text { color: #62d7c8; }
.contact-band h2 { margin: 9px 0 4px; font-size: 31px; letter-spacing: -.025em; }
.contact-band p { margin: 0; color: #9db5bf; font-size: 14px; }
.contact-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.contact-actions .button { min-width: 155px; }
.site-footer { background: #061923; color: #abc0c8; font-size: 12px; }
.footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1.2fr; gap: 44px; padding-block: 48px 38px; }
.footer-brand { margin-bottom: 7px; color: #fff; font-size: 20px; font-weight: 800; }
.footer-grid p { margin: 8px 0; }
.footer-grid small { color: #647e89; font-size: 8px; letter-spacing: .07em; }
.footer-grid strong { color: #fff; font-size: 11px; }
.footer-grid a { color: inherit; text-decoration: none; }
.footer-bottom { display: flex; justify-content: space-between; padding-block: 16px 22px; border-top: 1px solid rgba(255,255,255,.08); color: #68828c; font-size: 10px; }
.assistant-launcher {
  position: fixed; right: 20px; bottom: 20px; z-index: 40;
  padding: 12px 16px; border: 1px solid rgba(255,255,255,.18); border-radius: 8px;
  background: var(--teal); color: #fff; text-align: left; border: 0; cursor: pointer;
  box-shadow: 0 14px 32px rgba(6,42,50,.24);
}
.assistant-launcher span { display: block; font-size: 13px; font-weight: 750; }
.assistant-launcher small { display: block; margin-top: 2px; font-size: 7px; opacity: .72; letter-spacing: .08em; }

.page-hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #f2faf9 0%, #eaf5f7 100%);
  border-bottom: 1px solid var(--line);
}
.page-hero:before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(15,84,91,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(15,84,91,.04) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: linear-gradient(90deg, rgba(0,0,0,.75), transparent 85%);
}
.page-hero-grid {
  position: relative; display: grid; grid-template-columns: 1fr .72fr; gap: 70px;
  align-items: center; min-height: 540px; padding-block: 70px;
}
.breadcrumbs { display: flex; gap: 8px; margin-bottom: 28px; color: #8a9ca2; font-size: 10px; }
.breadcrumbs a { color: var(--teal); text-decoration: none; }
.page-hero h1 {
  margin: 15px 0 0; color: #0d3440; font-size: clamp(42px, 4.8vw, 64px);
  line-height: 1.06; letter-spacing: -.055em;
}
.page-hero h1 em { color: var(--teal); font-style: normal; }
.page-hero h1 small { display: block; margin-top: 15px; color: #7e959c; font-size: 12px; font-weight: 500; letter-spacing: .05em; }
.page-hero p { max-width: 650px; color: #506b75; font-size: 16px; line-height: 1.9; }
.page-hero .text-link { margin-left: 14px; }
.solution-map-card {
  padding: 28px; border-radius: 15px; color: #dcecef;
  background: var(--navy); box-shadow: 0 30px 70px rgba(7,35,49,.22);
}
.solution-map-head { display: flex; justify-content: space-between; align-items: center; padding-bottom: 16px; border-bottom: 1px solid rgba(113,201,195,.13); }
.solution-map-head span { font-size: 15px; font-weight: 700; }
.solution-map-head small { color: #70929e; font-size: 7px; letter-spacing: .1em; }
.layer-stack { display: grid; gap: 9px; margin-top: 18px; }
.layer-stack > div {
  display: grid; grid-template-columns: 30px 1fr; gap: 3px 10px; align-items: center;
  padding: 12px; border: 1px solid rgba(113,201,195,.13); border-radius: 7px;
  background: rgba(9,42,57,.72);
}
.layer-stack > div > span { grid-row: 1 / 3; color: #53ddcb; font-size: 10px; }
.layer-stack strong { color: #ecf7f8; font-size: 13px; }
.layer-stack small { color: #7396a2; font-size: 7px; letter-spacing: .06em; text-transform: uppercase; }
.solution-map-card > p { margin: 17px 0 0; color: #6f8f9b; font-size: 9px; line-height: 1.6; }
.problem-section, .acceptance-section { background: var(--paper); }
.problem-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.problem-grid article { padding: 25px 21px; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.problem-grid article > span { color: var(--teal); font-size: 10px; font-weight: 750; }
.problem-grid h3 { margin: 28px 0 2px; font-size: 18px; }
.problem-grid small, .layer-detail-grid small, .implementation-steps small { color: #8699a0; font-size: 8px; letter-spacing: .07em; text-transform: uppercase; }
.problem-grid p, .layer-detail-grid p { margin: 12px 0 0; color: #5e757d; font-size: 13px; line-height: 1.75; }
.service-closure-section .section-note { margin: 20px 0 0; padding: 16px 20px; border-left: 3px solid var(--teal); background: #f3f8f7; color: #5e757d; font-size: 13px; line-height: 1.8; }
.layered-section { background: #fff; }
.layer-detail-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.layer-detail-grid article { padding: 23px; border: 1px solid var(--line); border-radius: 10px; }
.layer-index { width: 34px; height: 34px; display: grid; place-items: center; margin-bottom: 26px; border-radius: 50%; background: var(--teal-soft); color: var(--teal); font-size: 11px; font-weight: 750; }
.layer-detail-grid h3 { margin: 0 0 2px; font-size: 18px; }
.implementation-section { background: var(--navy); color: #e5f0f3; }
.implementation-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 70px; }
.implementation-copy h2 { margin: 8px 0 3px; font-size: clamp(33px, 3.5vw, 48px); letter-spacing: -.04em; }
.implementation-copy small { color: #73929d; font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
.implementation-copy p { margin-top: 20px; color: #91aab4; line-height: 1.85; }
.implementation-copy .eyebrow-text { color: #52d7c7; }
.implementation-steps article { display: grid; grid-template-columns: 52px 1fr; gap: 16px; padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
.implementation-steps > article > span { color: #52d7c7; font-size: 11px; }
.implementation-steps h3 { margin: 0 0 2px; font-size: 18px; }
.implementation-steps small { color: #71909b; }
.implementation-steps p { margin: 9px 0 0; color: #97adb5; font-size: 13px; line-height: 1.75; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
.data-table { width: 100%; border-collapse: collapse; background: #fff; }
.data-table th { padding: 15px 17px; background: #eef7f7; color: #32535d; text-align: left; font-size: 12px; }
.data-table td { padding: 15px 17px; border-top: 1px solid var(--line); color: #5b727a; font-size: 13px; vertical-align: top; }
.data-table td:first-child { color: var(--ink); font-weight: 700; }
.acceptance-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 64px; align-items: center; }
.acceptance-grid h2 { margin: 8px 0 10px; font-size: 38px; }
.acceptance-grid p { color: #5e757d; line-height: 1.85; }
.evidence-list { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.evidence-list span { padding: 14px 15px; border: 1px solid var(--line); border-radius: 7px; background: #fff; color: #44616a; font-size: 12px; }
.related-projects { background: #fff; }
.case-link-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.case-link { display: block; padding: 25px; border: 1px solid var(--line); border-radius: 9px; text-decoration: none; }
.case-link > span { color: var(--teal); font-size: 9px; font-weight: 700; letter-spacing: .09em; }
.case-link strong { display: block; margin: 23px 0 9px; font-size: 20px; }
.case-link small { color: #7a9097; font-size: 10px; }
.info-callout {
  display: grid; grid-template-columns: 95px 1fr; gap: 20px; align-items: start;
  padding: 16px 18px; margin-bottom: 26px; border-left: 3px solid var(--teal);
  background: var(--teal-soft); color: #47636c; font-size: 13px;
}
.info-callout strong { color: var(--teal); }
.product-detail-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.product-card {
  scroll-margin-top: 110px; padding: 27px; border: 1px solid var(--line);
  border-radius: 12px; background: #fff;
}
.media-placeholder {
  min-height: 150px; display: grid; place-items: center; margin-bottom: 21px;
  border: 1px dashed #c8d9dc; border-radius: 7px;
  background-image: linear-gradient(45deg, rgba(15,90,96,.035) 25%, transparent 25%, transparent 75%, rgba(15,90,96,.035) 75%), linear-gradient(45deg, rgba(15,90,96,.035) 25%, transparent 25%, transparent 75%, rgba(15,90,96,.035) 75%);
  background-size: 16px 16px; background-position: 0 0, 8px 8px;
  color: #8a9ba1; text-align: center; font-size: 10px;
}
.media-placeholder small { display: block; margin-top: 4px; color: #a0adb2; font-size: 7px; letter-spacing: .1em; }
.media-placeholder img { width: 100%; height: 100%; object-fit: cover; border-radius: 6px; }
.product-media, .project-media { margin-bottom: 21px; border-radius: 7px; overflow: hidden; background: #eef5f6; }
.product-media img { display: block; width: 100%; aspect-ratio: 16 / 8; object-fit: contain; background: #f7fafb; }
.project-media img { width: 100%; max-height: 220px; object-fit: cover; }
.project-photo-placeholder { min-height: 185px; }
.product-card-top { display: flex; justify-content: space-between; align-items: center; color: var(--teal); font-size: 10px; font-weight: 750; letter-spacing: .07em; }
.product-card-top small { color: var(--amber); font-size: 9px; font-weight: 600; }
.product-card h2 { margin: 21px 0 1px; font-size: 25px; letter-spacing: -.025em; }
.product-en { margin: 0; color: #8a9ca2; font-size: 8px; letter-spacing: .09em; text-transform: uppercase; }
.product-model { display: inline-block; margin-top: 18px; padding: 5px 9px; border-radius: 4px; background: #edf5f6; color: #235963; font-size: 12px; font-weight: 750; }
.product-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin: 22px 0 0; border-top: 1px solid var(--line); }
.product-facts div { padding: 12px 0; border-bottom: 1px solid var(--line); }
.product-facts div:nth-child(odd) { padding-right: 18px; }
.product-facts div:nth-child(even) { padding-left: 18px; border-left: 1px solid var(--line); }
.product-facts dt { color: #8a9ca2; font-size: 9px; }
.product-facts dd { margin: 4px 0 0; color: #445f69; font-size: 12px; line-height: 1.6; }
.product-scenarios { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.product-scenarios span { padding: 5px 8px; border: 1px solid #d8e6e8; border-radius: 999px; color: #60777f; font-size: 9px; }
.product-boundary { margin: 17px 0 0; padding-top: 13px; border-top: 1px dashed #d6e1e4; color: #8b9ca2; font-size: 10px; }
.selection-section { background: var(--paper); }
.selection-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 70px; }
.selection-grid h2 { margin: 8px 0 12px; font-size: 39px; }
.selection-grid > div p { color: var(--muted); }
.selection-grid ol { list-style: none; margin: 0; padding: 0; }
.selection-grid li { display: grid; grid-template-columns: 48px 1fr; gap: 15px; padding: 17px 0; border-bottom: 1px solid var(--line); }
.selection-grid li > span { color: var(--teal); font-size: 10px; font-weight: 750; }
.selection-grid li strong { display: block; font-size: 17px; }
.selection-grid li small { display: block; color: #8a9ca2; font-size: 8px; letter-spacing: .08em; text-transform: uppercase; }
.selection-grid li p { margin: 7px 0 0; color: #5e757d; font-size: 13px; }
.platform-hero-grid { grid-template-columns: .88fr 1.12fr; }
.platform-preview { padding: 18px; border-radius: 15px; background: var(--navy); box-shadow: 0 30px 70px rgba(7,35,49,.22); }
.platform-preview-head { display: flex; justify-content: space-between; padding-bottom: 13px; border-bottom: 1px solid rgba(116,207,199,.14); color: #dcecef; font-size: 13px; font-weight: 700; }
.platform-preview-head small { color: #6d929e; font-size: 7px; letter-spacing: .08em; font-weight: 500; }
.platform-preview-body { display: grid; grid-template-columns: 43px 1fr; min-height: 270px; margin-top: 15px; }
.preview-sidebar { padding: 11px 10px; border-right: 1px solid rgba(116,207,199,.12); }
.preview-sidebar i { display: block; width: 16px; height: 16px; margin-bottom: 14px; border-radius: 4px; background: rgba(92,205,195,.16); }
.preview-content { padding: 8px 13px; }
.preview-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.preview-kpis span { padding: 12px 10px; border: 1px solid rgba(116,207,199,.13); border-radius: 6px; background: rgba(10,40,55,.75); color: #c4dadf; font-size: 9px; }
.preview-kpis small { display: block; margin-top: 5px; color: #648693; font-size: 6px; letter-spacing: .06em; }
.preview-chart { height: 175px; display: flex; align-items: end; gap: 7px; margin-top: 18px; padding: 15px; border: 1px solid rgba(116,207,199,.12); border-radius: 7px; background: rgba(8,34,48,.72); }
.preview-chart i { flex: 1; background: linear-gradient(180deg, #45dbc9, #24596f); border-radius: 2px 2px 0 0; }
.preview-chart i:nth-child(1) { height: 24%; } .preview-chart i:nth-child(2) { height: 44%; } .preview-chart i:nth-child(3) { height: 38%; } .preview-chart i:nth-child(4) { height: 72%; } .preview-chart i:nth-child(5) { height: 51%; } .preview-chart i:nth-child(6) { height: 64%; } .preview-chart i:nth-child(7) { height: 83%; } .preview-chart i:nth-child(8) { height: 45%; } .preview-chart i:nth-child(9) { height: 68%; } .preview-chart i:nth-child(10) { height: 88%; } .preview-chart i:nth-child(11) { height: 57%; } .preview-chart i:nth-child(12) { height: 80%; }
.platform-preview > p { margin: 14px 0 0; color: #698a96; font-size: 8px; }
.platform-feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.platform-feature-grid article { padding: 22px; border: 1px solid var(--line); border-radius: 9px; }
.platform-feature-grid article > span { color: #97a7ad; font-size: 9px; }
.platform-feature-grid h3 { margin: 23px 0 2px; font-size: 18px; }
.platform-feature-grid small { color: #8b9ca2; font-size: 7px; letter-spacing: .07em; text-transform: uppercase; }
.platform-feature-grid p { margin: 10px 0 0; color: #60777f; font-size: 13px; line-height: 1.75; }
.platform-interface-section { background: var(--navy); color: #fff; }
.platform-interface-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 62px; align-items: center; }
.platform-interface-copy .eyebrow-text { color: #58d6c7; }
.platform-interface-copy h2 { margin: 10px 0 3px; font-size: clamp(31px, 3.2vw, 44px); letter-spacing: -.04em; }
.platform-interface-copy > small { color: #7196a2; font-size: 8px; letter-spacing: .1em; text-transform: uppercase; }
.platform-interface-copy p { margin: 22px 0; color: #a4bdc6; font-size: 14px; line-height: 1.85; }
.platform-interface-copy ul { display: grid; grid-template-columns: 1fr 1fr; gap: 9px 20px; margin: 0; padding: 0; list-style: none; }
.platform-interface-copy li { position: relative; padding-left: 17px; color: #d6e5e8; font-size: 12px; }
.platform-interface-copy li::before { content: ""; position: absolute; left: 0; top: .48em; width: 7px; height: 7px; border-radius: 50%; background: #49d6c5; box-shadow: 0 0 0 4px rgba(73,214,197,.12); }
.platform-interface-media { margin: 0; padding: 9px; border: 1px solid rgba(100,216,201,.2); border-radius: 12px; background: rgba(255,255,255,.06); box-shadow: 0 28px 70px rgba(0,12,19,.3); }
.platform-interface-media img { display: block; width: 100%; aspect-ratio: 1080 / 519; object-fit: cover; border-radius: 7px; }
.platform-interface-media figcaption { display: flex; justify-content: space-between; gap: 20px; padding: 12px 4px 3px; color: #86a7b1; font-size: 8px; }
.platform-interface-media figcaption span { color: #b9d2d7; letter-spacing: .07em; text-transform: uppercase; }
.platform-flow { background: var(--paper); }
.data-flow { display: flex; align-items: center; gap: 13px; }
.data-flow > div { flex: 1; min-height: 118px; padding: 19px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.data-flow > div > span { color: var(--teal); font-size: 9px; }
.data-flow strong { display: block; margin-top: 22px; font-size: 16px; }
.data-flow small { display: block; color: #8a9ca2; font-size: 7px; letter-spacing: .07em; text-transform: uppercase; }
.data-flow > i { color: #8bb5b6; font-style: normal; }
.deployment-section { background: #fff; }
.deployment-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 68px; align-items: center; }
.deployment-grid h2 { margin: 8px 0 13px; font-size: 38px; }
.deployment-grid > div:first-child p { color: #5f767e; line-height: 1.85; }
.deployment-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.deployment-options article { padding: 21px; border: 1px solid var(--line); border-radius: 8px; }
.deployment-options strong { display: block; font-size: 17px; }
.deployment-options small { color: #8a9ca2; font-size: 7px; letter-spacing: .07em; text-transform: uppercase; }
.deployment-options p { margin: 13px 0 0; color: #60777f; font-size: 12px; line-height: 1.7; }
.project-case-list { display: grid; gap: 20px; }
.project-case { padding: 34px; border: 1px solid var(--line); border-radius: 12px; background: #fff; scroll-margin-top: 110px; }
.project-case-head { display: flex; justify-content: space-between; gap: 14px; color: var(--teal); font-size: 9px; font-weight: 750; letter-spacing: .08em; }
.project-case-head small { color: #8a9ca2; font-size: 8px; letter-spacing: .07em; text-transform: uppercase; }
.project-case h2 { margin: 30px 0 6px; max-width: 800px; font-size: clamp(25px, 3vw, 36px); line-height: 1.3; letter-spacing: -.03em; }
.project-role { margin: 0; color: #6d8289; font-size: 13px; }
.project-case-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin-top: 29px; border-top: 1px solid var(--line); }
.project-case-grid > div { padding: 19px 24px 19px 0; border-bottom: 1px solid var(--line); }
.project-case-grid > div:nth-child(even) { padding-left: 24px; border-left: 1px solid var(--line); }
.project-case-grid strong { display: block; font-size: 15px; }
.project-case-grid small, .evidence-method-grid small, .method-columns small { color: #899ba2; font-size: 7px; letter-spacing: .08em; text-transform: uppercase; }
.project-case-grid p { margin: 8px 0 0; color: #5f767e; font-size: 13px; line-height: 1.75; }
.project-evidence { display: grid; grid-template-columns: 100px 1fr; gap: 16px; margin-top: 24px; padding: 15px 0 0; border-top: 1px dashed #d9e4e6; }
.project-evidence span { color: var(--teal); font-size: 10px; font-weight: 750; }
.project-evidence p { margin: 0; color: #7a8f95; font-size: 11px; line-height: 1.75; }
.evidence-method { background: var(--paper); }
.evidence-method-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 65px; }
.evidence-method-grid h2 { margin: 8px 0 12px; font-size: 39px; }
.evidence-method-grid > div:first-child p { color: #5e757d; }
.method-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.method-columns > div { padding: 22px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.method-columns strong { display: block; font-size: 17px; }
.method-columns ul { margin: 13px 0 0; padding-left: 18px; color: #5e757d; font-size: 12px; line-height: 2; }
.identity-card { padding: 30px; border: 1px solid var(--line); border-radius: 13px; background: #fff; box-shadow: var(--shadow); }
.identity-card h2 { margin: 9px 0 18px; font-size: 22px; }
.identity-card dl { margin: 0; }
.identity-card dl > div { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.identity-card dt { color: #83979e; font-size: 11px; }
.identity-card dd { margin: 0; color: #385861; font-size: 12px; }
.identity-card > p { margin: 17px 0 0; color: #80949a; font-size: 10px; line-height: 1.7; }
.about-capabilities { background: #fff; }
.about-values { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.about-values article { padding: 25px; border: 1px solid var(--line); border-radius: 9px; }
.about-values article > span { color: var(--teal); font-size: 10px; }
.about-values h3 { margin: 27px 0 2px; font-size: 20px; }
.about-values small { color: #899ba2; font-size: 8px; text-transform: uppercase; letter-spacing: .07em; }
.about-values p { color: #5e757d; font-size: 13px; line-height: 1.75; }
.qualification-section { background: var(--paper); }
.qualification-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.qualification-grid h2 { margin: 8px 0 12px; font-size: 38px; }
.qualification-grid > div:first-child p { color: #5e757d; }
.qualification-card { padding: 28px; border: 1px solid #bbd9d7; border-radius: 10px; background: #fff; }
.qualification-card > span, .qualification-card > small { display: block; color: #7d9299; font-size: 10px; }
.qualification-card strong { display: block; margin: 12px 0 19px; color: var(--teal); font-size: 29px; }
.qualification-card b { display: block; margin-top: 5px; color: #274d57; font-size: 16px; }
.identity-disambiguation { background: #fff; }
.identity-disambiguation-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 75px; }
.identity-disambiguation-grid h2 { margin: 8px 0 0; font-size: 37px; }
.identity-disambiguation-grid p { margin-top: 0; color: #536e77; line-height: 1.9; }
.identity-disambiguation-grid strong { color: #174852; }
.contact-hero {
  padding-block: 70px; background:
    radial-gradient(circle at 18% 16%, rgba(49,177,165,.14), transparent 25%),
    linear-gradient(135deg, #f2faf9, #eaf4f7);
  border-bottom: 1px solid var(--line);
}
.contact-hero-grid { display: grid; grid-template-columns: 1fr .75fr; gap: 70px; align-items: center; }
.contact-hero h1 { margin: 16px 0 0; color: #0d3440; font-size: clamp(44px, 5vw, 65px); line-height: 1.06; letter-spacing: -.055em; }
.contact-hero h1 em { color: var(--teal); font-style: normal; }
.contact-hero h1 small { display: block; margin-top: 14px; color: #7f959c; font-size: 12px; font-weight: 500; letter-spacing: .04em; }
.contact-hero p { color: #526d76; font-size: 15px; line-height: 1.9; }
.contact-card { padding: 29px; border-radius: 13px; background: var(--navy); color: #fff; box-shadow: var(--shadow); }
.contact-card h2 { margin: 9px 0 21px; font-size: 22px; }
.contact-phone-large { display: block; padding: 17px 0; border-block: 1px solid rgba(255,255,255,.12); text-decoration: none; }
.contact-phone-large small { color: #7596a1; font-size: 9px; }
.contact-phone-large strong { display: block; margin-top: 5px; font-size: 27px; letter-spacing: .03em; }
.contact-phone-secondary { display: inline-block; margin-top: 12px; color: #9fc2ca; text-decoration: none; font-size: 11px; }
.contact-phone-secondary:hover { color: #fff; }
.contact-email-link { display: inline-block; margin-top: 12px; color: #9fc2ca; text-decoration: none; font-size: 11px; }
.contact-email-link:hover { color: #fff; }
.wechat-placeholder { display: grid; grid-template-columns: 104px 1fr; gap: 17px; align-items: center; margin-top: 18px; }
.wechat-qr-link { display: grid; justify-items: center; gap: 6px; color: #a6bdc5; text-decoration: none; font-size: 8px; }
.wechat-qr-link:hover { color: #fff; }
.qr-placeholder {
  height: 104px; display: grid; place-items: center; text-align: center;
  border: 1px dashed rgba(255,255,255,.35); border-radius: 5px;
  color: #b5cbd2; background-image: linear-gradient(45deg, rgba(255,255,255,.06) 25%, transparent 25%, transparent 75%, rgba(255,255,255,.06) 75%), linear-gradient(45deg, rgba(255,255,255,.06) 25%, transparent 25%, transparent 75%, rgba(255,255,255,.06) 75%);
  background-size: 12px 12px; background-position: 0 0, 6px 6px;
}
.qr-placeholder small { display: block; color: #7797a2; font-size: 7px; }
.wechat-qr { width: 104px; height: 104px; object-fit: contain; padding: 4px; border-radius: 5px; background: #fff; }
.wechat-text-only { width: 104px; min-height: 104px; display: flex; flex-direction: column; align-items: center; justify-content: center; border: 1px solid rgba(255,255,255,.22); border-radius: 5px; color: #d9e8ec; text-align: center; }
.wechat-text-only small { display: block; margin-top: 3px; color: #7797a2; font-size: 7px; letter-spacing: .1em; }
.wechat-placeholder p, .contact-note { color: #8ca8b2; font-size: 10px; line-height: 1.7; }
.contact-note { margin-bottom: 0; }
.inquiry-section { background: #fff; }
.inquiry-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 70px; align-items: start; }
.inquiry-copy h2 { margin: 8px 0 12px; font-size: 39px; }
.inquiry-copy > p { color: #5e757d; line-height: 1.85; }
.inquiry-copy ol { color: #526d76; line-height: 2; }
.inquiry-form { padding: 30px; border: 1px solid var(--line); border-radius: 12px; background: var(--paper); }
.form-step-head { display: flex; align-items: center; gap: 12px; margin-bottom: 19px; }
.form-step-head > span { color: var(--teal); font-size: 10px; }
.form-step-head strong { display: block; font-size: 17px; }
.form-step-head small { color: #8a9ca2; font-size: 7px; letter-spacing: .08em; text-transform: uppercase; }
.inquiry-form label { display: grid; gap: 6px; margin-top: 15px; color: #526d76; font-size: 11px; }
.inquiry-form input, .inquiry-form select, .inquiry-form textarea {
  width: 100%; border: 1px solid #cbdadd; border-radius: 5px;
  padding: 11px 12px; background: #fff; color: var(--ink);
}
.inquiry-form input:focus, .inquiry-form select:focus, .inquiry-form textarea:focus { outline: 2px solid rgba(12,116,113,.22); border-color: var(--teal); }
.honeypot-field { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }
.checkbox-label { display: flex !important; grid-template-columns: 16px 1fr; align-items: start; gap: 8px !important; }
.checkbox-label input { width: auto; margin-top: 4px; }
.checkbox-label a { color: var(--teal); }
.form-actions { display: flex; gap: 10px; margin-top: 20px; }
.form-actions .button { flex: 1; }
.form-error { min-height: 18px; margin: 12px 0 0; color: #a23b32; font-size: 11px; }
.form-fallback { margin-top: 16px; padding: 14px; border-radius: 6px; background: #fff2e1; color: #79521f; font-size: 11px; }
.form-fallback p, .form-fallback a { margin: 5px 0; color: inherit; font-weight: 700; }
.form-fallback .form-wecom-link { float: right; }
.form-success { margin-top: 16px; padding: 14px; border-radius: 6px; background: #e9f7ef; color: #1c6b45; font-size: 12px; }
.form-success strong { display: block; margin-bottom: 4px; }
.form-success p { margin: 0; color: #336d52; }
.privacy-content { max-width: 850px; }
.privacy-content article { padding: 0 0 26px; margin-bottom: 26px; border-bottom: 1px solid var(--line); }
.privacy-content h2 { margin: 0 0 10px; font-size: 23px; }
.privacy-content p { margin: 0; color: #536e77; font-size: 14px; line-height: 1.9; }
.faq-layout { display: grid; grid-template-columns: 190px 1fr; gap: 45px; align-items: start; }
.faq-categories { position: sticky; top: 104px; display: grid; gap: 8px; padding: 20px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); }
.faq-categories strong { margin-bottom: 8px; color: var(--ink); font-size: 13px; }
.faq-categories span { color: #6e838a; font-size: 11px; }
.faq-entry { padding: 27px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 110px; }
.faq-entry:first-child { padding-top: 0; }
.faq-meta { display: flex; justify-content: space-between; gap: 10px; color: var(--teal); font-size: 9px; font-weight: 700; letter-spacing: .06em; }
.faq-meta small { color: #8c9da3; font-weight: 500; }
.faq-entry h2 { margin: 15px 0 9px; font-size: 24px; }
.faq-short { color: #4f6a74; font-size: 14px; line-height: 1.8; }
.faq-entry details { margin-top: 11px; }
.faq-entry summary, .faq-item summary { color: var(--teal); cursor: pointer; font-size: 12px; font-weight: 700; }
.faq-entry details p { color: #5f767e; font-size: 13px; line-height: 1.8; }
.faq-entry details a { color: var(--teal); font-size: 11px; }
.faq-applicability { padding: 11px 13px; border-left: 2px solid #9ac9c6; background: var(--paper); }
.inline-faq { padding-block: 60px; border-top: 1px solid var(--line); }
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { padding: 18px 0; font-size: 15px; color: var(--ink); }
.faq-item > div { padding: 0 0 20px; }
.faq-item p { margin: 0 0 8px; color: #5e757d; font-size: 13px; line-height: 1.8; }
.faq-item a { color: var(--teal); text-decoration: none; font-size: 11px; }
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.article-card { min-height: 290px; padding: 26px; border: 1px solid var(--line); border-radius: 10px; text-decoration: none; background: linear-gradient(180deg, #fff, #f9fcfc); }
.article-card > span { color: var(--teal); font-size: 8px; font-weight: 700; letter-spacing: .08em; }
.article-card h2 { margin: 44px 0 11px; font-size: 23px; line-height: 1.35; }
.article-card p { color: #60777f; font-size: 13px; line-height: 1.75; }
.article-card small { display: block; margin-top: 26px; color: #81969c; font-size: 10px; }
.article-hero { padding-block: 66px 54px; background: linear-gradient(135deg, #f4fbfb, #eaf4f7); border-bottom: 1px solid var(--line); }
.article-hero-inner { max-width: 930px; }
.article-hero h1 { margin: 16px 0 15px; color: #0d3440; font-size: clamp(35px, 4.3vw, 55px); line-height: 1.15; letter-spacing: -.045em; }
.article-hero p { max-width: 800px; color: #506b75; font-size: 16px; line-height: 1.9; }
.article-meta { margin-top: 23px; color: #869aa0; font-size: 9px; }
.article-layout { display: grid; grid-template-columns: 1fr 260px; gap: 70px; padding-block: 65px; }
.article-content { max-width: 780px; }
.article-section { display: grid; grid-template-columns: 44px 1fr; gap: 20px; padding: 0 0 30px; margin-bottom: 30px; border-bottom: 1px solid var(--line); }
.article-section > span { color: var(--teal); font-size: 10px; }
.article-section h2 { margin: 0 0 10px; font-size: 25px; }
.article-section p { margin: 0; color: #526d76; font-size: 15px; line-height: 1.95; }
.article-aside { position: sticky; top: 104px; align-self: start; padding: 22px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); }
.article-aside strong { display: block; font-size: 14px; }
.article-aside p { color: #647b83; font-size: 12px; line-height: 1.75; }
.article-aside .button { width: 100%; margin-top: 8px; }
.assistant-panel {
  position: fixed; right: 20px; bottom: 80px; z-index: 60;
  width: min(380px, calc(100vw - 32px)); height: min(560px, calc(100vh - 120px));
  display: flex; flex-direction: column; overflow: hidden;
  border: 1px solid #bcd5d7; border-radius: 13px; background: #fff;
  box-shadow: 0 24px 70px rgba(7,35,49,.25);
}
.assistant-panel[hidden] { display: none; }
.assistant-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; background: var(--navy); color: #fff; }
.assistant-head strong { display: block; font-size: 15px; }
.assistant-head small { display: block; margin-top: 2px; color: #7395a1; font-size: 7px; letter-spacing: .08em; text-transform: uppercase; }
.assistant-head button { width: 30px; height: 30px; border: 0; border-radius: 50%; background: rgba(255,255,255,.1); color: #fff; font-size: 19px; cursor: pointer; }
.assistant-messages { flex: 1; display: flex; flex-direction: column; gap: 9px; overflow-y: auto; padding: 15px; background: #f6fafb; }
.assistant-message { max-width: 88%; padding: 10px 12px; border-radius: 10px; color: #4a646d; font-size: 12px; line-height: 1.65; }
.assistant-message.bot { align-self: flex-start; background: #fff; border: 1px solid #dee9eb; }
.assistant-message.user { align-self: flex-end; background: var(--teal-soft); color: #21545c; }
.assistant-message a { display: block; margin-top: 7px; color: var(--teal); font-size: 10px; font-weight: 700; }
.assistant-suggestions { display: flex; gap: 6px; overflow-x: auto; padding: 10px 12px; border-top: 1px solid var(--line); }
.assistant-suggestions button { white-space: nowrap; padding: 7px 9px; border: 1px solid #d4e3e5; border-radius: 999px; background: #fff; color: #47636c; font-size: 9px; cursor: pointer; }
.assistant-form { display: flex; gap: 7px; padding: 11px; border-top: 1px solid var(--line); background: #fff; }
.assistant-form input { flex: 1; min-width: 0; padding: 9px 10px; border: 1px solid #cadadd; border-radius: 5px; font-size: 12px; }
.assistant-form button { padding: 8px 13px; border: 0; border-radius: 5px; background: var(--teal); color: #fff; font-size: 11px; font-weight: 700; }
.not-found-hero { min-height: 570px; }
.not-found-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.not-found-links a { padding: 24px; border: 1px solid var(--line); border-radius: 9px; background: #fff; text-decoration: none; transition: .18s ease; }
.not-found-links a:hover { transform: translateY(-2px); border-color: #8ec9c7; }
.not-found-links strong { display: block; color: var(--navy); font-size: 19px; }
.not-found-links small { display: block; margin-top: 7px; color: #7f969d; font-size: 9px; line-height: 1.6; }

@media (max-width: 1120px) {
  .main-nav { gap: 12px; }
  .header-phone { display: none; }
  .brand { min-width: 158px; }
  .brand-copy small { font-size: 7px; }
}

@media (max-width: 940px) {
  .header-inner { height: 68px; }
  .nav-toggle { display: block; }
  .main-nav {
    display: none; position: absolute; left: 0; right: 0; top: 68px;
    padding: 22px 24px 28px; background: #fff; border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch; gap: 0; margin: 0;
    box-shadow: 0 18px 24px rgba(12,45,58,.08);
  }
  .main-nav.is-open { display: flex; }
  .main-nav a { padding: 13px 0; text-align: left; border-bottom: 1px solid #edf2f3; }
  .main-nav a:last-child { border-bottom: 0; }
  .header-contact { margin-left: auto; }
  .header-contact .button { display: none; }
  .hero-grid { grid-template-columns: 1fr; min-height: 0; padding-block: 60px; }
  .page-hero-grid, .implementation-grid, .acceptance-grid { grid-template-columns: 1fr; gap: 36px; }
  .platform-hero-grid, .selection-grid, .deployment-grid, .platform-interface-grid { grid-template-columns: 1fr; gap: 36px; }
  .contact-hero-grid, .inquiry-grid, .qualification-grid, .identity-disambiguation-grid, .evidence-method-grid { grid-template-columns: 1fr; gap: 36px; }
  .faq-layout, .article-layout { grid-template-columns: 1fr; gap: 36px; }
  .faq-categories, .article-aside { position: static; }
  .article-grid { grid-template-columns: 1fr 1fr; }
  .monitor-preview { max-width: 760px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-grid article, .capability-grid article:first-child { border-left: 1px solid var(--line); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .product-tile-grid { grid-template-columns: repeat(2, 1fr); }
  .field-gallery { grid-template-columns: 1fr 1fr; grid-template-rows: 320px 220px; }
  .field-gallery-main { grid-column: 1 / 3; grid-row: auto; }
  .problem-grid, .layer-detail-grid { grid-template-columns: repeat(2, 1fr); }
  .product-detail-grid, .platform-feature-grid { grid-template-columns: repeat(2, 1fr); }
  .about-values { grid-template-columns: 1fr 1fr; }
  .data-flow { flex-wrap: wrap; }
  .data-flow > div { min-width: 31%; }
  .process-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-band-inner { align-items: flex-start; flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .container { width: min(calc(100% - 32px), var(--width)); }
  .header-contact { display: none; }
  .brand-copy strong { font-size: 17px; }
  .hero-grid { padding-block: 43px 40px; gap: 34px; }
  .page-hero-grid { padding-block: 44px; min-height: 0; }
  .page-hero h1 { font-size: 40px; }
  .hero-copy h1 { font-size: 42px; }
  .hero-lead { font-size: 14px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .button { width: 100%; }
  .monitor-body { grid-template-columns: 1fr; }
  .monitor-side { border-left: 0; border-top: 1px solid rgba(120,216,208,.12); display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .monitor-side .mini-label, .monitor-side h2, .data-bars { display: none; }
  .monitor-side .live-status { display: block; margin: 0; padding: 9px; }
  .monitor-side .live-status i { display: block; margin-bottom: 6px; }
  .park-map { min-height: 330px; }
  .monitor-footer { gap: 12px; padding: 10px 15px; flex-wrap: wrap; }
  .section { padding-block: 62px; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .case-grid, .product-tile-grid, .footer-grid, .problem-grid, .layer-detail-grid, .case-link-grid, .evidence-list, .not-found-links { grid-template-columns: 1fr; }
  .field-gallery { grid-template-columns: 1fr; grid-template-rows: none; }
  .field-gallery figure { min-height: 270px; }
  .field-gallery-main { grid-column: auto; min-height: 360px !important; }
  .product-tile-media { height: 210px; }
  .product-detail-grid, .platform-feature-grid, .deployment-options { grid-template-columns: 1fr; }
  .about-values, .method-columns { grid-template-columns: 1fr; }
  .article-grid { grid-template-columns: 1fr; }
  .article-layout { padding-block: 42px; }
  .article-section { grid-template-columns: 1fr; gap: 8px; }
  .project-case { padding: 23px; }
  .project-case-grid { grid-template-columns: 1fr; }
  .project-case-grid > div:nth-child(even) { padding-left: 0; border-left: 0; }
  .project-evidence { grid-template-columns: 1fr; gap: 7px; }
  .identity-card dl > div { grid-template-columns: 1fr; gap: 3px; }
  .contact-card, .inquiry-form { padding: 21px; }
  .wechat-placeholder { grid-template-columns: 90px 1fr; }
  .qr-placeholder { height: 90px; }
  .assistant-panel { right: 16px; bottom: 75px; }
  .data-flow { display: grid; grid-template-columns: 1fr; }
  .data-flow > i { display: none; }
  .platform-interface-copy ul { grid-template-columns: 1fr; }
  .platform-interface-media figcaption { flex-direction: column; gap: 4px; }
  .product-facts { grid-template-columns: 1fr; }
  .product-facts div:nth-child(odd), .product-facts div:nth-child(even) { padding: 11px 0; border-left: 0; }
  .case-card { min-height: 0; }
  .process-steps li { grid-template-columns: 42px 1fr; }
  .contact-band h2 { font-size: 28px; }
  .footer-bottom { gap: 10px; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}