:root {
  --brand: #0b5da8;
  --brand-dark: #084a86;
  --brand-deep: #073a66;
  --accent: #f5a623;
  --accent-dark: #e0901a;
  --accent-text: #a35f00;
  --dark: #142a3f;
  --ink: #263848;
  --muted: #5a6b80;
  --bg: #ffffff;
  --bg-soft: #f4f7fb;
  --bg-tint: #eaf1f8;
  --line: #dbe4ee;
  --shadow: 0 10px 30px rgba(11, 93, 168, 0.08);
  --shadow-lg: 0 18px 45px rgba(11, 93, 168, 0.14);
  --radius: 14px;
  --radius-sm: 8px;
  --container: 1180px;
  --header-h: 76px;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font: inherit; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: 999px;
  font-weight: 600; line-height: 1; white-space: nowrap;
  transition: transform .18s ease, background .18s ease, color .18s ease, box-shadow .18s ease;
}
.btn-primary { background: var(--accent); color: #1c1c1c; box-shadow: 0 8px 20px rgba(245,166,35,.35); }
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-2px); }
.btn-outline { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,.75); }
.btn-outline:hover { background: rgba(255,255,255,.12); transform: translateY(-2px); }
.btn-ghost { background: #fff; color: var(--brand); border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--brand); background: var(--bg-tint); transform: translateY(-2px); }
.btn-brand { background: var(--brand); color: #fff; }
.btn-brand:hover { background: var(--brand-dark); transform: translateY(-2px); }

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s ease;
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(11,93,168,.08); }
.header-inner { display: flex; align-items: center; gap: 24px; height: var(--header-h); }

.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand .logo {
  width: 44px; height: 44px; border-radius: 10px;
  background: linear-gradient(135deg, var(--brand), var(--brand-deep));
  display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 15px; letter-spacing: .2px;
}
.brand-name { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name b { font-size: 20px; color: var(--dark); letter-spacing: 1px; }
.brand-name span { font-size: 11px; color: var(--muted); letter-spacing: 3px; }

.main-nav { margin-left: auto; }
.main-nav ul { display: flex; gap: 6px; align-items: center; }
.main-nav a {
  padding: 9px 15px; border-radius: 8px; color: var(--ink);
  font-weight: 500; transition: color .18s, background .18s;
}
.main-nav a:hover, .main-nav a.active { color: var(--brand); background: var(--bg-tint); }

.header-cta { display: flex; align-items: center; gap: 14px; }
.header-phone { display: flex; flex-direction: column; text-align: right; line-height: 1.2; }
.header-phone small { color: var(--muted); font-size: 12px; }
.header-phone b { color: var(--brand); font-size: 17px; }

.nav-toggle { display: none; flex-direction: column; gap: 5px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--dark); border-radius: 2px; }

.hero {
  position: relative; color: #fff;
  background:
    radial-gradient(900px 500px at 82% -10%, rgba(245,166,35,.30), transparent 60%),
    linear-gradient(120deg, var(--brand-deep) 0%, var(--brand-dark) 55%, var(--brand) 100%);
  overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 46px 46px; opacity: .5; pointer-events: none;
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.25fr .75fr; gap: 40px; align-items: center; padding: 84px 0 90px; }
.hero-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; letter-spacing: 4px; color: #ffe1ad;
  text-transform: uppercase; margin-bottom: 18px;
}
.hero-kicker::before { content: ""; width: 34px; height: 2px; background: var(--accent); }
.hero h1 { font-size: 44px; line-height: 1.22; letter-spacing: .5px; margin-bottom: 20px; }
.hero h1 span { color: var(--accent); }
.hero p { font-size: 18px; color: rgba(255,255,255,.86); max-width: 580px; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-quick { display: flex; gap: 30px; margin-top: 38px; }
.hero-quick div b { display: block; font-size: 26px; color: #fff; }
.hero-quick div span { color: rgba(255,255,255,.72); font-size: 13px; }

.trust-strip { background: var(--bg-tint); border-bottom: 1px solid var(--line); }
.trust-inner { display: flex; flex-wrap: wrap; gap: 12px 34px; padding: 14px 0; font-size: 14px; color: var(--muted); }
.trust-inner span { display: inline-flex; align-items: center; gap: 8px; }
.trust-inner span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); flex: none; }

.hero-visual {
  position: relative; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-lg); min-height: 300px;
  display: grid; place-items: center;
  background: linear-gradient(150deg, rgba(255,255,255,.10), rgba(255,255,255,.02));
  border: 1px solid rgba(255,255,255,.16);
}
.hero-visual svg { width: 78%; height: auto; }

.section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-head .eyebrow {
  color: var(--brand); font-weight: 700; letter-spacing: 4px; font-size: 13px;
  text-transform: uppercase; margin-bottom: 10px; display: inline-block;
}
.section-head h2 { font-size: 32px; color: var(--dark); line-height: 1.3; }
.section-head p { color: var(--muted); margin-top: 14px; }

.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px; transition: transform .22s, box-shadow .22s, border-color .22s;
}
.feature:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature .icon { width: 48px; height: 48px; border-radius: 12px; background: var(--bg-tint); color: var(--brand); display: grid; place-items: center; margin-bottom: 18px; }
.feature h3 { font-size: 19px; color: var(--dark); margin-bottom: 8px; }
.feature p { color: var(--muted); font-size: 15px; }

.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .22s, box-shadow .22s;
}
.product-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-lg); }
.product-card .thumb {
  aspect-ratio: 16 / 10; display: grid; place-items: center;
  color: var(--brand); background: linear-gradient(150deg, var(--bg-tint), #fff);
  border-bottom: 1px solid var(--line);
}
.product-card .thumb svg { width: 70px; height: 70px; }
.product-card .body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.product-card h3 { font-size: 20px; color: var(--dark); margin-bottom: 8px; }
.product-card p { color: var(--muted); font-size: 14.5px; flex: 1; }
.product-card .more { margin-top: 14px; color: var(--brand); font-weight: 600; display: inline-flex; align-items: center; gap: 6px; }
.product-card .more:hover { gap: 10px; }

.industry-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.industry {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 18px; text-align: center; transition: transform .2s, box-shadow .2s, border-color .2s;
}
.industry:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: var(--brand); }
.industry .dot { width: 46px; height: 46px; margin: 0 auto 14px; border-radius: 50%; color: #fff; background: var(--brand); display: grid; place-items: center; }
.industry h4 { color: var(--dark); font-size: 17px; }

.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; transition: transform .2s, box-shadow .2s; }
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.news-card .date { color: var(--accent-text); font-weight: 700; font-size: 13px; letter-spacing: 1px; }
.news-card h3 { font-size: 19px; color: var(--dark); margin: 8px 0 10px; line-height: 1.5; }
.news-card p { color: var(--muted); font-size: 14.5px; }

.cta { background: linear-gradient(120deg, var(--brand-deep), var(--brand)); color: #fff; padding: 60px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta h2 { font-size: 28px; margin-bottom: 8px; }
.cta p { color: rgba(255,255,255,.82); }

.breadcrumb { background: var(--bg-soft); border-bottom: 1px solid var(--line); padding: 16px 0; }
.breadcrumb .container { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 14px; flex-wrap: wrap; }
.breadcrumb a:hover { color: var(--brand); }

.page-hero {
  color: #fff; background: linear-gradient(120deg, var(--brand-deep), var(--brand));
  padding: 60px 0 64px;
}
.page-hero h1 { font-size: 36px; margin-bottom: 10px; }
.page-hero p { color: rgba(255,255,255,.85); max-width: 720px; }

.about-split { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; }
.about-split h2 { font-size: 28px; color: var(--dark); margin-bottom: 18px; }
.about-split p { color: var(--ink); margin-bottom: 16px; }
.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin: 40px 0; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; text-align: center; }
.stat b { font-size: 30px; color: var(--brand); display: block; }
.stat span { color: var(--muted); font-size: 14px; }

.values { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value { border-left: 4px solid var(--brand); background: #fff; border-radius: 0 var(--radius) var(--radius) 0; padding: 24px 26px; box-shadow: var(--shadow); }
.value h3 { color: var(--dark); font-size: 19px; margin-bottom: 8px; }
.value p { color: var(--muted); font-size: 15px; }

.pd-layout { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: start; }
.pd-aside { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; position: sticky; top: calc(var(--header-h) + 20px); }
.pd-aside h3 { color: var(--dark); font-size: 20px; margin-bottom: 16px; }
.pd-aside ul li { border-bottom: 1px solid var(--line); }
.pd-aside ul li:last-child { border-bottom: none; }
.pd-aside ul a { display: block; padding: 12px 4px; color: var(--muted); transition: color .15s, padding-left .15s; }
.pd-aside ul a:hover, .pd-aside ul a.active { color: var(--brand); padding-left: 12px; }
.pd-block { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; margin-bottom: 22px; }
.pd-block h2 { color: var(--dark); font-size: 24px; margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.pd-block p { color: var(--ink); margin-bottom: 14px; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.spec-table td { padding: 12px 14px; border: 1px solid var(--line); }
.spec-table tr td:first-child { background: var(--bg-soft); color: var(--dark); font-weight: 600; width: 30%; }
.pd-hero-img { width: 100%; aspect-ratio: 16/9; border-radius: var(--radius); background: linear-gradient(150deg, var(--bg-tint), #fff); color: var(--brand); display: grid; place-items: center; border: 1px solid var(--line); margin-bottom: 26px; }
.pd-hero-img svg { width: 120px; height: 120px; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.contact-card .row { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.contact-card .row:last-child { border-bottom: none; }
.contact-card .row .ico { width: 40px; height: 40px; border-radius: 10px; background: var(--bg-tint); color: var(--brand); display: grid; place-items: center; flex-shrink: 0; }
.contact-card .row b { color: var(--dark); display: block; font-size: 14px; }
.contact-card .row span { color: var(--muted); }

.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.form-card h3 { color: var(--dark); font-size: 22px; margin-bottom: 20px; }
.form-field { margin-bottom: 18px; }
.form-field label { display: block; font-weight: 600; color: var(--dark); font-size: 14px; margin-bottom: 7px; }
.form-field input, .form-field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--bg-soft); color: var(--ink); transition: border-color .15s, background .15s;
}
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: var(--brand); background: #fff; }
.form-field textarea { min-height: 120px; resize: vertical; }
.form-note { font-size: 13px; color: var(--muted); margin-top: 8px; }

.article-wrap { max-width: 860px; margin: 0 auto; }
.article-head h1 { font-size: 30px; color: var(--dark); line-height: 1.4; margin-bottom: 12px; }
.article-head .meta { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.article-body p { margin-bottom: 18px; color: var(--ink); }
.article-body h2 { font-size: 22px; color: var(--dark); margin: 28px 0 12px; }
.article-body ul { margin: 0 0 18px 20px; list-style: disc; color: var(--ink); }
.article-body li { margin-bottom: 6px; }

.site-footer { background: var(--dark); color: rgba(255,255,255,.78); }
.footer-main { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding: 60px 0 40px; }
.footer-brand .brand-name b { color: #fff; }
.footer-brand .brand-name span { color: rgba(255,255,255,.55); }
.footer-brand p { margin-top: 18px; font-size: 14px; color: rgba(255,255,255,.62); max-width: 340px; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,.72); font-size: 14.5px; transition: color .15s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); padding: 20px 0; display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; font-size: 13px; color: rgba(255,255,255,.55); }
.footer-bottom a { color: rgba(255,255,255,.65); }
.footer-bottom a:hover { color: var(--accent); }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 1000px) {
  .features, .product-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .industry-grid { grid-template-columns: repeat(3, 1fr); }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { min-height: 240px; }
  .about-split, .contact-grid, .pd-layout { grid-template-columns: 1fr; }
  .pd-aside { position: static; }
}

@media (max-width: 760px) {
  :root { --header-h: 64px; }
  .section { padding: 60px 0; }
  .hero-inner { padding: 56px 0 64px; }
  .hero h1 { font-size: 32px; }
  .section-head h2 { font-size: 26px; }
  .features, .product-grid, .news-grid, .industry-grid, .values, .stat-row { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; padding: 44px 0 28px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .hero-quick { gap: 18px; flex-wrap: wrap; }
}

@media print {
  .site-header, .site-footer, .cta, .nav-toggle, .breadcrumb { display: none !important; }
}

/* ================= 新站补充组件 ================= */

/* 下拉导航 */
.main-nav li.has-sub { position: relative; }
.main-nav li.has-sub > a::after {
  content: ""; display: inline-block; width: 5px; height: 5px; margin-left: 7px;
  border-right: 1.6px solid currentColor; border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg) translateY(-1px); opacity: .6;
}
.subnav {
  position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%);
  display: none; gap: 26px; padding: 20px 24px;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); z-index: 120; white-space: nowrap;
}
.main-nav li.has-sub:hover .subnav, .main-nav li.has-sub:focus-within .subnav { display: flex; }
.subnav-col .subnav-title {
  font-size: 12px; letter-spacing: 1px; color: var(--muted); font-weight: 700;
  text-transform: uppercase; margin-bottom: 10px; padding-bottom: 8px; border-bottom: 1px solid var(--line);
}
.subnav-col .subnav-title a { display: inline; padding: 0; color: inherit; font-size: inherit; font-weight: inherit; letter-spacing: inherit; }
.subnav-col .subnav-title a:hover { background: none; padding-left: 0; color: var(--brand); }
.subnav-col ul { display: block; }
.subnav-col li { margin-bottom: 2px; }
.subnav-col a { display: block; padding: 7px 10px; border-radius: 7px; font-size: 14.5px; color: var(--ink); }
.subnav-col a:hover { background: var(--bg-tint); color: var(--brand); padding-left: 10px; }

/* 产品分组 */
.prod-group { margin-bottom: 56px; }
.prod-group:last-child { margin-bottom: 0; }
.group-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 22px; padding-bottom: 14px; border-bottom: 2px solid var(--bg-tint); }
.group-head h2 { font-size: 26px; color: var(--dark); }
.group-head span { color: var(--muted); font-size: 14px; }
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.prod-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; transition: transform .2s, box-shadow .2s, border-color .2s; }
.prod-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }
.prod-item h3 { font-size: 19px; color: var(--dark); margin-bottom: 8px; }
.prod-item p { color: var(--muted); font-size: 14.5px; margin-bottom: 12px; }
.prod-item .more { color: var(--brand); font-weight: 600; font-size: 14.5px; }

/* 案例 */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.case-card { background: var(--bg-soft); border: 1px solid var(--line); border-left: 4px solid var(--brand); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 18px 20px; }
.case-card p { margin: 0; color: var(--ink); font-size: 15px; }
.case-tag { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .5px; color: var(--brand); background: var(--bg-tint); padding: 3px 10px; border-radius: 999px; margin-bottom: 10px; }

/* FAQ */
.faq details { border-bottom: 1px solid var(--line); padding: 4px 0; }
.faq details:last-child { border-bottom: none; }
.faq summary { cursor: pointer; padding: 12px 4px; font-weight: 600; color: var(--dark); list-style: none; position: relative; padding-right: 28px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%); color: var(--brand); font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq-body { padding: 0 4px 14px; color: var(--muted); font-size: 15px; }

/* 数据表 */
.table-scroll { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.data-table th { background: var(--brand); color: #fff; text-align: left; padding: 12px 14px; font-weight: 600; }
.data-table td { padding: 11px 14px; border: 1px solid var(--line); vertical-align: top; }
.data-table tbody tr:nth-child(even) td { background: var(--bg-soft); }

/* 定位语 */
.pos-quote { background: var(--bg-tint); border-left: 4px solid var(--brand); border-radius: 0 var(--radius) var(--radius) 0; padding: 22px 26px; margin-bottom: 26px; }
.pos-quote p { margin: 0; color: var(--brand-deep); font-weight: 700; font-size: 18px; line-height: 1.6; }

/* 流程步骤 */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: step; }
.step { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 18px; position: relative; }
.step::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--brand); color: #fff; font-weight: 700; margin-bottom: 12px; }
.step h4 { color: var(--dark); font-size: 16px; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 14px; margin: 0; }

/* 标签组 */
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; }
.chip { background: var(--bg-tint); color: var(--brand-deep); border-radius: 999px; padding: 7px 15px; font-size: 14.5px; font-weight: 500; }

/* 提示块 */
.note { background: #fff8e6; border-left: 4px solid var(--accent); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; padding: 16px 20px; color: #6b5300; font-size: 15px; }
.note p { margin: 0; }

@media (max-width: 1000px) {
  .prod-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .prod-grid, .case-grid, .steps { grid-template-columns: 1fr; }
  .subnav { position: static; transform: none; display: block; box-shadow: none; border: none; border-radius: 0; padding: 4px 0 8px; white-space: normal; gap: 0; }
  .subnav-col { margin-bottom: 10px; }
  .subnav-col .subnav-title { border: none; padding: 8px; margin-bottom: 0; }
  .subnav-col a { padding: 11px 14px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .main-nav li.has-sub > a::after { float: right; margin-top: 8px; }
}

/* 移动端「查看全部」入口：桌面隐藏 */
.subnav-all { display: none; }

/* ================= 头部导航布局修正 ================= */
.header-inner { gap: 18px; }
.header-cta { flex-shrink: 0; }
.header-phone b, .header-phone small { white-space: nowrap; }
.lang-switch {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 40px; height: 32px; padding: 0 10px; margin-right: 4px;
  border: 1px solid var(--line); border-radius: 999px;
  font-size: 13.5px; font-weight: 600; color: var(--brand);
  transition: background .15s ease, border-color .15s ease;
}
.lang-switch:hover { background: var(--bg-tint); border-color: var(--brand); }

@media (min-width: 1081px) {
  .main-nav ul { flex-wrap: nowrap; }
  .main-nav li { flex-shrink: 0; }
  .main-nav a { white-space: nowrap; padding: 9px 12px; }
}

/* 6 项导航提前收起为汉堡菜单 */
@media (max-width: 1080px) {
  .main-nav {
    position: absolute; top: var(--header-h); left: 0; right: 0; margin-left: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    display: none; box-shadow: 0 20px 30px rgba(11,93,168,.1);
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 10px 16px 18px; align-items: stretch; }
  .main-nav a { padding: 14px 8px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav-toggle { display: flex; margin-left: auto; }
  .header-phone { display: none; }
  .header-cta .btn { display: none; }
  .subnav {
    position: static; transform: none; display: none; box-shadow: none; border: none;
    border-radius: 0; padding: 4px 0 8px; white-space: normal; gap: 0;
  }
  .main-nav li.has-sub.open > .subnav { display: block; }
  .subnav-all { display: block; padding: 11px 14px; color: var(--brand); font-weight: 600; border-bottom: 1px solid var(--line); }
  .subnav-col { margin-bottom: 10px; }
  .subnav-col .subnav-title { border: none; padding: 8px; margin-bottom: 0; }
  .subnav-col a { padding: 11px 14px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .main-nav li.has-sub > a::after {
    content: ""; float: right; margin-top: 6px;
    width: 8px; height: 8px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
    transform: rotate(45deg); transition: transform .2s ease;
  }
  .main-nav li.has-sub.open > a::after { transform: rotate(-135deg); margin-top: 10px; }
}

/* ================= 移动端细节补强 ================= */
@media (max-width: 760px) {
  .container { padding: 0 18px; }
  .hero h1 { font-size: 28px; }
  .page-hero h1 { font-size: 26px; }
  .pd-block { padding: 22px 18px; }
  .pd-block h2 { font-size: 20px; }
  .cta h2 { font-size: 22px; }
  .cta .btn { width: 100%; justify-content: center; }
  .breadcrumb { font-size: 13px; }
  .spec-table { font-size: 14px; }
  .spec-table td { padding: 10px 12px; }
  .spec-table tr td:first-child { width: 38%; }
  .data-table { font-size: 14px; }
  .case-grid { gap: 12px; }
  .chip-row { gap: 8px; }
  .chip { padding: 6px 12px; font-size: 13.5px; }
  .btn { padding: 12px 22px; font-size: 15px; }
  .btn-block-mobile { width: 100%; justify-content: center; }
}

/* 表格在窄屏可横向滑动，避免撑破布局 */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* 触屏设备：去掉 hover 位移，避免点按后状态残留 */
@media (hover: none) {
  .prod-item:hover, .feature:hover, .news-card:hover, .industry:hover,
  .btn:hover, .product-card:hover { transform: none; }
}

/* 语言切换按钮在移动端保留（桌面显示，手机上仍可切换语言） */
@media (max-width: 1080px) {
  .lang-switch { margin-right: 12px; }
}

/* ================= 实景照片 ================= */
/* 首屏主视觉使用真实设备照片 */
.hero-visual { aspect-ratio: 4 / 3; }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* 产品/分类卡片配图 */
.prod-item .pic {
  aspect-ratio: 16 / 10; border-radius: 12px; overflow: hidden;
  margin-bottom: 16px; background: var(--bg-tint);
}
.prod-item .pic:empty { display: none; }
.prod-item .pic img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .45s ease; }
.prod-item:hover .pic img { transform: scale(1.05); }

/* 产品详情页主图与分类页配图 */
.pd-photo {
  width: 100%; aspect-ratio: 16 / 10; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); background: var(--bg-tint); margin-bottom: 26px;
}
.pd-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.photo-inline {
  aspect-ratio: 16 / 9; border-radius: 12px; overflow: hidden;
  border: 1px solid var(--line); background: var(--bg-tint); margin: 4px 0 20px;
}
.photo-inline img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* 厂区/设备/现场照片格 */
.photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.photo-grid figure {
  margin: 0; background: #fff; border: 1px solid var(--line); border-radius: 12px;
  overflow: hidden; transition: transform .22s ease, box-shadow .22s ease;
}
.photo-grid figure:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.photo-grid img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; }
.photo-grid figcaption { padding: 10px 14px; font-size: 13.5px; color: var(--muted); }

@media (max-width: 1000px) {
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .photo-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .photo-grid figcaption { padding: 8px 10px; font-size: 12.5px; }
  .prod-item .pic { margin-bottom: 12px; }
  .pd-photo { margin-bottom: 18px; }
}