/* ==========================================================================
   官网样式表（无第三方依赖）
   ========================================================================== */
:root {
  --brand: #1d4ed8;
  --brand-600: #2563eb;
  --brand-700: #1e40af;
  --brand-50: #eef4ff;
  --brand-100: #dbe7ff;
  --ai: #6d28d9;
  --ai-50: #f4efff;
  --ai-100: #e7dcff;
  --navy: #0b1f3f;
  --navy-2: #102a54;
  --ink: #0f172a;
  --text: #22304a;
  --muted: #5b6b83;
  --line: #e3e8f0;
  --bg: #ffffff;
  --surface: #f5f8fc;
  --ok: #059669;
  --warn: #d97706;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 12px 32px -14px rgba(15, 23, 42, .22);
  --shadow-sm: 0 4px 14px -6px rgba(15, 23, 42, .14);
  --max: 1160px;
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { color: var(--ink); line-height: 1.25; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.2rem; }
h4 { font-size: 1.05rem; }
p { margin: 0 0 1em; }
ul { padding-left: 1.2em; margin: 0 0 1em; }
li { margin: .25em 0; }
strong { color: var(--ink); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 12px; top: 12px; background: #fff; padding: 8px 12px; z-index: 999; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section.tight { padding: 64px 0; }
.section.alt { background: var(--surface); }
.section.dark { background: var(--navy); color: #c9d4e8; }
.section.dark h2, .section.dark h3 { color: #fff; }
.center { text-align: center; }
.eyebrow {
  display: inline-block; font-size: .82rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--brand); margin-bottom: 12px;
}
.eyebrow.ai { color: var(--ai); }
.section-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.section-head p { color: var(--muted); font-size: 1.08rem; }
.lead { font-size: 1.15rem; color: var(--muted); }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
.note { font-size: .88rem; color: var(--muted); border-left: 3px solid var(--line); padding-left: 12px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px;
  border-radius: 999px; font-weight: 600; font-size: .98rem; border: 1px solid transparent;
  cursor: pointer; transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 8px 20px -8px rgba(29, 78, 216, .6); }
.btn-primary:hover { background: var(--brand-700); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: #c7d2e3; box-shadow: var(--shadow-sm); }
.btn-light { background: #fff; color: var(--brand-700); }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .45); }
.btn-outline-light:hover { background: rgba(255, 255, 255, .08); }
.btn svg { width: 18px; height: 18px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- Header ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .86); backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.header .container { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; }
.logo:hover { text-decoration: none; }
.logo svg { width: 36px; height: 36px; }
.logo .name { font-size: 1.12rem; letter-spacing: .02em; }
.logo .name small { display: block; font-size: .66rem; letter-spacing: .18em; color: var(--muted); font-weight: 600; line-height: 1; margin-top: 3px; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a { color: var(--text); padding: 8px 14px; border-radius: 8px; font-weight: 500; }
.nav a:hover { background: var(--surface); text-decoration: none; color: var(--ink); }
.nav a.active { color: var(--brand); font-weight: 600; }
.nav .btn { margin-left: 8px; padding: 9px 18px; }
.nav-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 10px;
  background: #fff; cursor: pointer; align-items: center; justify-content: center;
}
.nav-toggle svg { width: 22px; height: 22px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 480px at 8% -10%, var(--brand-100) 0%, transparent 60%),
    radial-gradient(700px 420px at 100% 0%, var(--ai-100) 0%, transparent 60%),
    linear-gradient(#fff, #fbfcfe);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(15, 23, 42, .045) 1px, transparent 1px), linear-gradient(90deg, rgba(15, 23, 42, .045) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(#000, transparent 85%);
  -webkit-mask-image: linear-gradient(#000, transparent 85%);
}
.hero .container { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; padding-top: 88px; padding-bottom: 88px; }
.hero h1 { margin-bottom: 18px; }
.hero h1 .accent { color: var(--brand); }
.hero .lead { font-size: 1.18rem; margin-bottom: 28px; max-width: 560px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 18px 28px; margin-top: 30px; font-size: .92rem; color: var(--muted); }
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta svg { width: 16px; height: 16px; color: var(--ok); }

.page-hero { padding: 72px 0 56px; background: linear-gradient(180deg, var(--brand-50), #fff); border-bottom: 1px solid var(--line); }
.page-hero.ai { background: linear-gradient(180deg, var(--ai-50), #fff); }
.page-hero h1 { margin-bottom: 14px; }
.page-hero .lead { max-width: 760px; }
.breadcrumb { font-size: .85rem; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a { color: var(--muted); }

/* Hero illustration */
.flow-art { position: relative; padding-bottom: 96px; }
.flow-art svg { width: 100%; height: auto; }
.ai-card {
  position: absolute; right: 0; bottom: 0; width: 340px; max-width: 100%; background: #fff;
  border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); padding: 12px 16px; font-size: .84rem; line-height: 1.55;
}
.ai-card .tag { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; color: var(--ai); font-size: .8rem; margin-bottom: 6px; }
.ai-card .tag i { width: 8px; height: 8px; border-radius: 50%; background: var(--ai); box-shadow: 0 0 0 4px var(--ai-100); }
.ai-card p { margin: 0 0 8px; color: var(--text); }
.ai-card .meta { display: flex; gap: 10px; flex-wrap: wrap; color: var(--muted); font-size: .78rem; }
.ai-card .meta b { color: var(--ink); font-weight: 600; }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat { text-align: center; padding: 28px 16px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.stat b { display: block; font-size: 2.2rem; color: var(--brand); line-height: 1.1; font-weight: 800; letter-spacing: -.02em; }
.stat b small { font-size: 1rem; margin-left: 2px; font-weight: 600; }
.stat span { color: var(--muted); font-size: .92rem; }
.section.dark .stat { background: rgba(255, 255, 255, .06); border-color: rgba(255, 255, 255, .12); }
.section.dark .stat b { color: #fff; }
.section.dark .stat span { color: #aebbd6; }

/* ---------- Grids & cards ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: #d6deea; }
.card h3 { margin-top: 14px; }
.card p:last-child { margin-bottom: 0; }
.card ul { margin: 10px 0 0; padding-left: 1.1em; color: var(--muted); font-size: .95rem; }
.card .more { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; font-weight: 600; font-size: .95rem; }
.card .more svg { width: 16px; height: 16px; }
.icon {
  width: 46px; height: 46px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center;
  background: var(--brand-50); color: var(--brand);
}
.icon svg { width: 24px; height: 24px; }
.icon.ai { background: var(--ai-50); color: var(--ai); }
.icon.ok { background: #e8f7f1; color: var(--ok); }
.card.ai-card-lg { border-top: 4px solid var(--ai); }
.card.bpm-card-lg { border-top: 4px solid var(--brand); }
.card.feature { padding: 24px; }
.card.feature h3 { font-size: 1.08rem; }
.card.feature p { color: var(--muted); font-size: .95rem; }

.product-duo { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.product-duo .card { padding: 36px; }
.product-duo h3 { font-size: 1.5rem; margin-top: 10px; }
.product-duo .sub { color: var(--muted); margin-bottom: 18px; }
.product-duo ul { list-style: none; padding: 0; margin: 0 0 20px; }
.product-duo li { display: flex; gap: 10px; align-items: flex-start; margin: 8px 0; color: var(--text); }
.product-duo li svg { width: 18px; height: 18px; flex: none; margin-top: 4px; color: var(--ok); }

/* ---------- Pills / badges ---------- */
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill { display: inline-block; padding: 6px 12px; border-radius: 999px; background: var(--surface); border: 1px solid var(--line); font-size: .86rem; color: var(--text); }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .74rem; font-weight: 700; letter-spacing: .04em; vertical-align: middle; }
.badge.ok { background: #e8f7f1; color: var(--ok); }
.badge.warn { background: #fff4e5; color: var(--warn); }
.badge.plan { background: var(--surface); color: var(--muted); border: 1px solid var(--line); }
.badge.ai { background: var(--ai-50); color: var(--ai); }
.badge.bpm { background: var(--brand-50); color: var(--brand); }

/* ---------- Architecture layers ---------- */
.arch { display: grid; gap: 10px; }
.layer {
  display: grid; grid-template-columns: 150px 1fr; gap: 20px; align-items: center;
  padding: 16px 22px; border-radius: 12px; border: 1px solid var(--line); background: #fff;
}
.layer .lbl { font-weight: 700; color: var(--ink); }
.layer .lbl small { display: block; font-weight: 600; color: var(--muted); font-size: .76rem; letter-spacing: .08em; }
.layer .items { display: flex; flex-wrap: wrap; gap: 8px; }
.layer .items span { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 4px 10px; font-size: .86rem; }
.layer.ai { background: linear-gradient(90deg, var(--ai-50), #fff); border-color: var(--ai-100); }
.layer.ai .lbl { color: var(--ai); }
.layer.bpm { background: linear-gradient(90deg, var(--brand-50), #fff); border-color: var(--brand-100); }
.layer.bpm .lbl { color: var(--brand); }
.arch-note { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 28px; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; min-width: 640px; }
th, td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--surface); color: var(--ink); font-weight: 700; font-size: .88rem; letter-spacing: .04em; }
tr:last-child td { border-bottom: 0; }
td b { color: var(--ink); }

/* ---------- Tabs ---------- */
.tabs { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 32px; }
.tab { padding: 9px 18px; border-radius: 999px; border: 1px solid var(--line); background: #fff; cursor: pointer; font: inherit; font-weight: 600; color: var(--text); }
.tab[aria-selected="true"] { background: var(--ink); color: #fff; border-color: var(--ink); }
.tabpanel[hidden] { display: none; }

/* ---------- Timeline ---------- */
.timeline { list-style: none; padding: 0; margin: 0; position: relative; }
.timeline::before { content: ""; position: absolute; left: 92px; top: 6px; bottom: 6px; width: 2px; background: var(--line); }
.timeline li { display: grid; grid-template-columns: 72px 1fr; gap: 40px; padding: 0 0 28px; position: relative; }
.timeline li::after { content: ""; position: absolute; left: 86px; top: 8px; width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 3px solid var(--brand); }
.timeline .year { font-weight: 800; color: var(--brand); font-size: 1.05rem; text-align: right; }
.timeline h4 { margin-bottom: 4px; }
.timeline p { color: var(--muted); margin: 0; font-size: .95rem; }

/* ---------- Case cards ---------- */
.case { display: grid; grid-template-columns: 1fr; }
.case .kv { display: flex; flex-wrap: wrap; gap: 18px; margin: 14px 0 0; padding-top: 14px; border-top: 1px dashed var(--line); }
.case .kv div b { display: block; font-size: 1.35rem; color: var(--brand); font-weight: 800; line-height: 1.1; }
.case .kv div span { font-size: .8rem; color: var(--muted); }
.case .ind { font-size: .8rem; color: var(--muted); letter-spacing: .06em; text-transform: uppercase; font-weight: 700; }

.client-wall { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.client-wall .group { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.client-wall h4 { color: var(--brand); font-size: .9rem; letter-spacing: .06em; margin-bottom: 8px; }
.client-wall p { margin: 0; color: var(--text); font-size: .95rem; line-height: 1.9; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step { position: relative; padding: 26px 22px 22px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); font-weight: 800; color: var(--brand); font-size: 1.4rem; display: block; margin-bottom: 8px; letter-spacing: -.02em; }
.step h4 { margin-bottom: 6px; }
.step p { margin: 0; color: var(--muted); font-size: .93rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 36px; align-items: start; }
.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { display: flex; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.contact-list li:last-child { border-bottom: 0; }
.contact-list .icon { width: 40px; height: 40px; flex: none; }
.contact-list b { display: block; color: var(--ink); }
.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow-sm); }
.form label { display: block; font-weight: 600; font-size: .9rem; margin: 0 0 6px; color: var(--ink); }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form .field { margin-bottom: 16px; }
.form input, .form select, .form textarea {
  width: 100%; padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px; font: inherit; color: var(--text); background: #fff;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: 2px solid var(--brand-100); border-color: var(--brand); }
.form textarea { min-height: 110px; resize: vertical; }
.form .hint { font-size: .82rem; color: var(--muted); margin-top: 12px; }

/* ---------- CTA band ---------- */
.cta {
  background: linear-gradient(120deg, var(--navy) 0%, #14306a 55%, #3b2a86 100%); color: #fff; padding: 72px 0;
}
.cta h2 { color: #fff; }
.cta p { color: #c9d4e8; max-width: 640px; }
.cta .container { display: grid; grid-template-columns: 1.4fr 1fr; gap: 32px; align-items: center; }
.cta .btn-row { justify-content: flex-end; }

/* ---------- Footer ---------- */
.footer { background: var(--navy); color: #aebbd6; padding: 64px 0 28px; font-size: .92rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr 1.2fr; gap: 32px; }
.footer h4 { color: #fff; font-size: .95rem; margin-bottom: 12px; letter-spacing: .04em; }
.footer a { color: #aebbd6; }
.footer a:hover { color: #fff; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin: 6px 0; }
.footer .logo { color: #fff; margin-bottom: 14px; }
.footer .logo .name small { color: #8ea0c2; }
.footer .brand-desc { max-width: 320px; color: #8ea0c2; }
.footer-bottom { margin-top: 44px; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, .12); display: flex; flex-wrap: wrap; gap: 8px 24px; justify-content: space-between; font-size: .84rem; color: #8ea0c2; }

/* ---------- Misc ---------- */
/* 内容默认可见（对爬虫与生成式引擎友好）；只有首屏以下的元素才先隐藏、进入视口时渐显 */
.js .reveal.pending { opacity: 0; transform: translateY(16px); }
.js .reveal.in { opacity: 1; transform: none; transition: opacity .6s ease, transform .6s ease; }
@media (prefers-reduced-motion: reduce) { .js .reveal.pending { opacity: 1; transform: none; } .js .reveal.in { transition: none; } html { scroll-behavior: auto; } }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.split .art { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow-sm); }
.check-list { list-style: none; padding: 0; margin: 0; }
.check-list li { display: flex; gap: 10px; align-items: flex-start; margin: 10px 0; }
.check-list li svg { width: 20px; height: 20px; color: var(--ok); flex: none; margin-top: 3px; }
.quote { font-size: 1.25rem; color: var(--ink); font-weight: 600; border-left: 4px solid var(--brand); padding: 6px 0 6px 20px; margin: 0 0 24px; }
.section.dark .quote { color: #fff; border-color: #6ea0ff; }
.kicker { font-weight: 700; color: var(--ink); }
.back-top {
  position: fixed; right: 20px; bottom: 20px; width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--line); background: #fff;
  box-shadow: var(--shadow-sm); cursor: pointer; display: none; align-items: center; justify-content: center; z-index: 40;
}
.back-top.show { display: inline-flex; }
.back-top svg { width: 18px; height: 18px; }
.prose { max-width: 820px; }
.prose h2 { font-size: 1.4rem; margin-top: 2em; }
.prose h3 { font-size: 1.1rem; margin-top: 1.6em; }
.prose p, .prose li { color: var(--text); }
.legal-meta { color: var(--muted); font-size: .9rem; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .hero .container { grid-template-columns: 1fr; padding-top: 64px; padding-bottom: 64px; }
  .flow-art { max-width: 620px; margin-top: 8px; padding-bottom: 0; }
  .ai-card { position: relative; right: auto; bottom: auto; width: auto; margin-top: 14px; }
}
@media (max-width: 860px) {
  .section { padding: 64px 0; }
  .grid-3, .grid-2, .product-duo, .split, .contact-grid, .cta .container, .arch-note, .client-wall { grid-template-columns: 1fr; }
  .cta .btn-row { justify-content: flex-start; }
  .nav {
    display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch;
    background: #fff; border-bottom: 1px solid var(--line); padding: 12px 16px 18px; gap: 2px; box-shadow: var(--shadow);
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 10px; }
  .nav .btn { margin: 10px 0 0; justify-content: center; }
  .nav-toggle { display: inline-flex; }
  .layer { grid-template-columns: 1fr; gap: 8px; }
  .timeline::before { left: 66px; }
  .timeline li { grid-template-columns: 48px 1fr; gap: 30px; }
  .timeline li::after { left: 60px; }
  .form .row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .grid-4, .stats, .steps, .footer-grid { grid-template-columns: 1fr; }
  .container { padding: 0 18px; }
  .btn { width: 100%; justify-content: center; }
  .btn-row { flex-direction: column; }
  .hero .lead { font-size: 1.05rem; }
}
@media print {
  .header, .footer, .cta, .back-top, .nav-toggle { display: none !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- GEO additions: key points, FAQ, articles, glossary ---------- */
.keypoints { background: var(--surface); border-bottom: 1px solid var(--line); padding: 20px 0; }
.keypoints .container { display: grid; grid-template-columns: 110px 1fr; gap: 16px 24px; align-items: start; }
.keypoints .lbl { font-weight: 700; color: var(--ink); font-size: .88rem; letter-spacing: .08em; padding-top: 3px; }
.keypoints ul { margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px 28px; font-size: .95rem; }
.keypoints li { display: flex; gap: 8px; align-items: flex-start; }
.keypoints li svg { width: 16px; height: 16px; color: var(--brand); flex: none; margin-top: 6px; }
.faq { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 36px; }
.faq-item { border-top: 1px solid var(--line); padding-top: 16px; }
.faq-item h3 { font-size: 1.05rem; margin-bottom: 8px; }
.faq-item p { color: var(--text); font-size: .95rem; margin: 0; }
.article-meta { display: flex; flex-wrap: wrap; gap: 8px 20px; color: var(--muted); font-size: .9rem; }
.article { max-width: 800px; margin: 0 auto; }
.article h2 { font-size: 1.45rem; margin-top: 2em; }
.article h3 { font-size: 1.12rem; margin-top: 1.4em; }
.article p, .article li { font-size: 1.02rem; color: var(--text); }
.article .tldr { background: var(--brand-50); border: 1px solid var(--brand-100); border-radius: var(--radius); padding: 18px 22px; margin-bottom: 8px; }
.article .tldr h2 { margin: 0 0 6px; font-size: .85rem; letter-spacing: .1em; color: var(--brand); }
.article .tldr p { margin: 0; }
.article .quote { font-size: 1.15rem; }
.article table { min-width: 0; font-size: .93rem; }
.article ol.checklist { list-style: none; padding: 0; counter-reset: none; }
.article ol.checklist li { border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 20px; margin: 12px 0; background: #fff; }
.article ol.checklist h3 { margin: 0 0 6px; font-size: 1.05rem; }
.article ol.checklist p { margin: 0; color: var(--muted); font-size: .95rem; }
.article .author { margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: .92rem; }
.article .author ul { margin: 6px 0 0; }
.insight-list .card h3 { margin-top: 8px; font-size: 1.12rem; line-height: 1.4; }
.insight-list .card a:hover { text-decoration: none; color: var(--brand) !important; }
.glossary { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 40px; margin: 0; }
.glossary div { padding: 12px 0; border-bottom: 1px solid var(--line); }
.glossary dt { font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.glossary dd { margin: 0; color: var(--text); font-size: .95rem; }
.pills a.pill:hover { border-color: var(--brand); color: var(--brand); text-decoration: none; }
@media (max-width: 1200px) and (min-width: 861px) { .nav a { padding: 8px 9px; font-size: .92rem; } .logo .name { font-size: 1rem; } }
@media (max-width: 860px) {
  .keypoints .container, .keypoints ul, .faq, .glossary { grid-template-columns: 1fr; }
  }

/* ---------- Trademarks ---------- */
.reg { font-size: .5em; vertical-align: super; margin-left: 2px; font-weight: 600; letter-spacing: 0; }
.tm-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 18px; }
.tm-chip { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px; display: inline-flex; align-items: center; }
.tm-chip img { height: 30px; width: auto; }
.footer-tm { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; margin-top: 36px; font-size: .84rem; color: #8ea0c2; }
.footer-tm .lbl { font-weight: 700; color: #c9d4e8; letter-spacing: .06em; }
.footer-tm .tm-chip { padding: 6px 10px; border-color: transparent; }
.footer-tm .tm-chip img { height: 18px; }

/* ---------- 制造业应用系统卡片 ---------- */
.systems .card.sys h3 { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; font-size: 1.05rem; }
.systems .card.sys h3 .abbr { font-size: 1.35rem; font-weight: 800; color: var(--brand); letter-spacing: .02em; }
.systems .card.sys > p.muted { font-size: .95rem; margin-bottom: 10px; }
.systems .card.sys ul { border-top: 1px dashed var(--line); padding-top: 10px; margin-top: 12px; }

/* ---------- 关联公司 ---------- */
.footer-rel { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 16px; margin-top: 32px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); font-size: .86rem; color: #8ea0c2; }
.footer-rel .lbl { font-weight: 700; color: #c9d4e8; letter-spacing: .06em; }
.footer-rel a { color: #c9d4e8; text-decoration: underline; }

/* ---------- 语言切换 ---------- */
.lang-switch {
  margin-left: 6px; padding: 6px 12px; border: 1px solid var(--line); border-radius: 999px;
  font-size: .85rem; font-weight: 600; color: var(--text); white-space: nowrap;
}
.lang-switch:hover { border-color: var(--brand); color: var(--brand); text-decoration: none; }
@media (max-width: 860px) { .lang-switch { margin: 8px 0 0; text-align: center; } }

/* ---------- 服务范围列表 ---------- */
.services { margin: 0; display: grid; gap: 2px; }
.services div { padding: 12px 0; border-bottom: 1px solid var(--line); }
.services div:last-child { border-bottom: 0; }
.services dt { font-weight: 700; color: var(--ink); margin-bottom: 4px; }
.services dd { margin: 0; color: var(--muted); font-size: .93rem; }

/* ---------- 指定标题在桌面宽度下强制单行 ---------- */
/* 用于中文长标题：容器放开限制，宽屏禁止折行；窄屏仍按正常规则换行，避免溢出 */
.section-head.nowrap { max-width: none; }
@media (min-width: 992px) {
  .section-head.nowrap h2 { white-space: nowrap; }
}

/* ---------- AI 办公助手集成板块 ---------- */
.assist { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; background: var(--surface); }
.assist-head { max-width: 780px; margin-bottom: 22px; }
.assist-head h3 { font-size: 1.4rem; margin: 10px 0 8px; }
.assist-head p { margin: 0; }
.assist .card { background: #fff; }
.assist .card.feature h3 { font-size: 1rem; }
@media (max-width: 860px) { .assist { padding: 20px; } }