:root {
  --brand: #0d5bd4;
  --brand-dark: #0a3f93;
  --ink: #131a2a;
  --muted: #5b6678;
  --line: #e6eaf0;
  --bg-alt: #f5f7fb;
  --white: #fff;
  --radius: 12px;
  --shadow: 0 8px 30px rgba(16, 38, 76, 0.08);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink);
  line-height: 1.6;
  background: var(--white);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1180px, 92%); margin: 0 auto; }
.center { text-align: center; }
.mt-32 { margin-top: 32px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.logo-img { height: 38px; width: auto; border-radius: 0; }
.nav { display: flex; gap: 28px; }
.nav a { color: var(--muted); font-weight: 500; position: relative; padding: 4px 0; }
.nav a:hover, .nav a.active { color: var(--brand); }
.nav a.active::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 2px; background: var(--brand); border-radius: 2px;
}
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; }
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; }

/* Buttons */
.btn {
  display: inline-block; padding: 12px 26px; border-radius: 10px;
  font-weight: 600; font-size: 15px; cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  border: 1px solid transparent;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 6px 18px rgba(13, 91, 212, .28); }
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost { background: rgba(255,255,255,.15); color: #fff; border-color: rgba(255,255,255,.5); }
.btn-outline { background: #fff; color: var(--brand); border-color: var(--brand); }
.btn-outline:hover { background: var(--brand); color: #fff; }

/* Hero */
.hero {
  background: radial-gradient(1200px 600px at 80% -10%, #1f6ef0 0%, var(--brand-dark) 45%, #06245c 100%);
  color: #fff; padding: 80px 0 90px;
}
.hero-inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: 50px; align-items: center; }
.hero-eyebrow { text-transform: uppercase; letter-spacing: 2px; font-size: 13px; opacity: .85; margin-bottom: 16px; }
.hero h1 { font-size: 44px; line-height: 1.25; margin-bottom: 20px; }
.hero-desc { font-size: 17px; opacity: .92; max-width: 540px; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: grid; gap: 18px; }
.stat {
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18);
  border-radius: var(--radius); padding: 22px 26px;
}
.stat strong { display: block; font-size: 34px; }
.stat span { opacity: .85; font-size: 15px; }

/* Sections */
.section { padding: 78px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-head h2 { font-size: 32px; margin-bottom: 12px; }
.section-head p { color: var(--muted); font-size: 17px; }

/* Grid */
.grid { display: grid; gap: 26px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Product card */
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .18s ease, box-shadow .18s ease;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card-media {
  aspect-ratio: 4/3; display: grid; place-items: center;
  background: linear-gradient(135deg, #eef3fb, #dfe9fb); font-size: 52px; color: var(--brand);
}
.card-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.card-tag { font-size: 12px; color: var(--brand); font-weight: 600; letter-spacing: .5px; }
.card-body h3 { font-size: 19px; margin: 8px 0 10px; }
.card-body p { color: var(--muted); font-size: 15px; flex: 1; }
.card-link { margin-top: 14px; color: var(--brand); font-weight: 600; font-size: 14px; }

/* Feature */
.feature { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.feature-icon {
  width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center;
  background: #eaf1fe; color: var(--brand); font-size: 22px; margin-bottom: 16px;
}
.feature h3 { font-size: 18px; margin-bottom: 8px; }
.feature p { color: var(--muted); font-size: 15px; }

/* CTA */
.cta { background: linear-gradient(135deg, var(--brand), var(--brand-dark)); color: #fff; padding: 56px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta h2 { font-size: 28px; margin-bottom: 6px; }
.cta p { opacity: .9; }

/* Page header */
.page-hero { background: var(--bg-alt); padding: 56px 0; border-bottom: 1px solid var(--line); }
.page-hero h1 { font-size: 36px; margin-bottom: 10px; }
.page-hero p { color: var(--muted); font-size: 17px; max-width: 680px; }
.breadcrumb { font-size: 14px; color: var(--muted); margin-bottom: 16px; }
.breadcrumb a:hover { color: var(--brand); }

/* Filters */
.filters { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 36px; }
.filter-btn {
  padding: 9px 20px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; color: var(--muted); cursor: pointer; font-size: 14px; font-weight: 500;
}
.filter-btn.active, .filter-btn:hover { background: var(--brand); color: #fff; border-color: var(--brand); }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-grid h2 { font-size: 30px; margin-bottom: 18px; }
.about-grid p { color: var(--muted); margin-bottom: 14px; }
.value-list { list-style: none; display: grid; gap: 14px; margin-top: 10px; }
.value-list li { padding-left: 28px; position: relative; color: var(--muted); }
.value-list li::before { content: "✓"; position: absolute; left: 0; color: var(--brand); font-weight: 700; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; }
.info-item { display: flex; gap: 16px; margin-bottom: 26px; }
.info-item .ic { width: 46px; height: 46px; border-radius: 12px; background: #eaf1fe; color: var(--brand); display: grid; place-items: center; font-size: 20px; flex: none; }
.info-item h4 { font-size: 16px; margin-bottom: 2px; }
.info-item p { color: var(--muted); }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line);
  border-radius: 10px; font-size: 15px; font-family: inherit; background: #fbfcfe;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--brand); }
.form-note { font-size: 13px; color: var(--muted); margin-top: 10px; }

/* Footer */
.site-footer { background: #0c1626; color: #c4ccd9; padding: 56px 0 28px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; }
.footer-brand .logo-img { filter: brightness(0) invert(1); opacity: .9; }
.footer-brand p { margin-top: 14px; font-size: 14px; color: #8b97aa; max-width: 280px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-col a, .footer-col p { display: block; color: #98a3b6; font-size: 14px; margin-bottom: 10px; }
.footer-col a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); margin-top: 36px; padding-top: 20px; font-size: 13px; color: #7c8798; text-align: center; }

/* Responsive */
@media (max-width: 920px) {
  .hero-inner, .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 34px; }
}
@media (max-width: 600px) {
  .nav {
    position: absolute; top: 68px; left: 0; right: 0; background: #fff;
    flex-direction: column; padding: 16px 6%; gap: 4px;
    border-bottom: 1px solid var(--line); display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: 10px 0; }
  .nav-toggle { display: flex; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}

/* Product image in card */
.card-media img { width: 100%; height: 100%; object-fit: cover; }

/* Product detail */
.detail-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
.detail-media {
  background: linear-gradient(135deg, #eef3fb, #dfe9fb); border-radius: var(--radius);
  overflow: hidden; aspect-ratio: 4/3; display: grid; place-items: center;
}
.detail-media img { width: 100%; height: 100%; object-fit: cover; }
.detail-icon { font-size: 110px; color: var(--brand); }
.detail-info h2 { font-size: 26px; margin: 10px 0 14px; }
.detail-info p { color: var(--muted); margin-bottom: 18px; }
.detail-spec-title { font-size: 19px; margin: 22px 0 12px; }
.spec-list { list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 10px 24px; margin-bottom: 26px; }
.spec-list li { padding: 10px 14px; background: var(--bg-alt); border-radius: 8px; font-size: 14px; color: var(--ink); }
@media (max-width: 920px) {
  .detail-grid { grid-template-columns: 1fr; }
  .spec-list { grid-template-columns: 1fr; }
}

/* ---------- 后台管理 ---------- */
.admin-body { background: var(--bg-alt); min-height: 100vh; }
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card { background: #fff; padding: 40px; border-radius: var(--radius); box-shadow: var(--shadow); width: min(380px, 100%); }
.login-card h1 { font-size: 22px; margin-bottom: 6px; }
.login-card p { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.admin-top { background: #0c1626; color: #fff; padding: 14px 0; }
.admin-top .container { display: flex; align-items: center; justify-content: space-between; }
.admin-top .logo-text { color: #fff; }
.admin-top button { background: rgba(255,255,255,.12); color: #fff; border: 1px solid rgba(255,255,255,.25); padding: 8px 16px; border-radius: 8px; cursor: pointer; }
.admin-main { padding: 30px 0 60px; }
.tabs { display: flex; gap: 10px; margin-bottom: 24px; }
.tab { padding: 9px 20px; border-radius: 8px; border: 1px solid var(--line); background: #fff; cursor: pointer; font-weight: 500; color: var(--muted); }
.tab.active { background: var(--brand); color: #fff; border-color: var(--brand); }
.panel { display: none; }
.panel.active { display: block; }
.admin-grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 28px; align-items: start; }
.box { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.box h2 { font-size: 18px; margin-bottom: 18px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.admin-list { display: grid; gap: 12px; }
.list-item { display: flex; gap: 14px; align-items: center; padding: 12px; border: 1px solid var(--line); border-radius: 10px; }
.list-thumb { width: 54px; height: 54px; border-radius: 8px; background: #eef3fb; display: grid; place-items: center; font-size: 24px; color: var(--brand); overflow: hidden; flex: none; }
.list-thumb img { width: 100%; height: 100%; object-fit: cover; }
.list-item .meta { flex: 1; min-width: 0; }
.list-item .meta h4 { font-size: 15px; margin-bottom: 2px; }
.list-item .meta span { font-size: 13px; color: var(--muted); }
.list-item .ops { display: flex; gap: 8px; }
.mini { padding: 6px 12px; border-radius: 7px; border: 1px solid var(--line); background: #fff; cursor: pointer; font-size: 13px; }
.mini.del { color: #c0392b; border-color: #f0c4be; }
.mini.edit { color: var(--brand); border-color: #bcd4f7; }
.preview-img { width: 80px; height: 80px; border-radius: 8px; object-fit: cover; margin-top: 8px; border: 1px solid var(--line); }
.toast { position: fixed; right: 20px; bottom: 20px; background: #0d8a3a; color: #fff; padding: 12px 20px; border-radius: 8px; box-shadow: var(--shadow); display: none; z-index: 100; }
.inq-card { border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 12px; }
.inq-card .hd { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.inq-card .hd strong { font-size: 15px; }
.inq-card .hd time { font-size: 12px; color: var(--muted); }
.inq-card p { font-size: 14px; color: var(--muted); margin: 2px 0; }
.settings-box { max-width: 880px; }
.settings-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 26px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.settings-head h2 { margin-bottom: 4px; }
.settings-head p { color: var(--muted); font-size: 13px; }
.settings-head > span { flex: none; padding: 7px 10px; color: var(--brand); background: #eaf3ff; border-radius: 4px; font-size: 11px; }
.settings-head > span i { margin-right: 5px; }
.settings-actions { display: flex; align-items: center; gap: 10px; margin-top: 4px; }
.settings-actions .btn { display: inline-flex; align-items: center; gap: 8px; }
@media (max-width: 820px) { .admin-grid, .row { grid-template-columns: 1fr; } }
@media (max-width: 600px) {
  .admin-main .tabs { overflow-x: auto; flex-wrap: nowrap; }
  .admin-main .tab { flex: none; }
  .settings-head { flex-direction: column; }
  .settings-actions { align-items: stretch; flex-direction: column; }
  .settings-actions .btn { justify-content: center; }
}

/* ========== 专业产品详情页 ========== */
.product-page {
  --product-navy: #071b37;
  --product-blue: #075fd8;
  --product-cyan: #14a8e0;
  background: #fff;
}
.product-breadcrumb-wrap { background: #f6f8fb; border-bottom: 1px solid #e8edf3; }
.product-breadcrumb { height: 52px; display: flex; align-items: center; gap: 10px; color: #7b8797; font-size: 13px; }
.product-breadcrumb a { color: #536174; transition: color .2s ease; }
.product-breadcrumb a:hover { color: var(--brand); }
.product-breadcrumb span:last-child { color: #25344a; }

.product-hero-section {
  position: relative; padding: 66px 0 58px; overflow: hidden;
  background: linear-gradient(112deg, #fff 0%, #fff 56%, #f4f8fd 100%);
}
.product-hero-section::before {
  content: ""; position: absolute; right: -140px; top: -260px; width: 680px; height: 680px;
  border: 1px solid rgba(7,95,216,.08); border-radius: 50%; box-shadow: 0 0 0 70px rgba(7,95,216,.025), 0 0 0 140px rgba(7,95,216,.02);
}
.product-hero-grid { position: relative; display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); gap: 74px; align-items: center; }
.product-visual { border: 1px solid #e1e7ee; background: #fff; box-shadow: 0 22px 60px rgba(15,42,79,.09); }
.product-visual-head { height: 48px; padding: 0 18px; border-bottom: 1px solid #e8edf3; display: flex; align-items: center; justify-content: space-between; color: #7d8897; font-size: 11px; letter-spacing: 1.2px; }
.product-status { display: inline-flex; align-items: center; gap: 7px; letter-spacing: 0; color: #526174; }
.product-status i { width: 7px; height: 7px; border-radius: 50%; background: #16a568; box-shadow: 0 0 0 4px rgba(22,165,104,.1); }
.product-image-stage { min-height: 390px; display: grid; place-items: center; background: #f6f7f8; overflow: hidden; }
.product-image-stage img { width: 100%; height: 100%; min-height: 390px; object-fit: cover; }
.product-image-stage .placeholder-icon { width: 100%; min-height: 390px; border-radius: 0; }
.product-image-note { padding: 12px 18px; border-top: 1px solid #e8edf3; text-align: center; color: #99a3af; font-size: 11px; }

.product-kicker { margin-bottom: 18px; color: #8a96a6; font-size: 12px; font-weight: 700; letter-spacing: 1.5px; }
.product-kicker span { display: inline-block; margin-right: 11px; padding: 6px 11px; color: var(--product-blue); background: #eaf3ff; letter-spacing: .5px; }
.product-summary-panel h1 { max-width: 640px; margin-bottom: 13px; color: var(--product-navy); font-size: clamp(32px, 3.2vw, 46px); line-height: 1.2; letter-spacing: -.8px; }
.product-model-line { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; }
.product-model-line span { color: #8792a1; font-size: 12px; }
.product-model-line strong { padding-left: 10px; border-left: 2px solid var(--product-blue); color: #33445a; font-family: Consolas, monospace; font-size: 13px; letter-spacing: .6px; }
.product-lead { max-width: 640px; margin-bottom: 27px; color: #58677a; font-size: 16px; line-height: 1.9; }
.product-key-metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-bottom: 29px; border-top: 1px solid #dfe5ed; border-left: 1px solid #dfe5ed; }
.product-metric { min-height: 82px; padding: 14px 16px; border-right: 1px solid #dfe5ed; border-bottom: 1px solid #dfe5ed; background: rgba(255,255,255,.75); }
.product-metric span { display: block; margin-bottom: 5px; color: #8a95a4; font-size: 11px; }
.product-metric strong { display: block; color: #152c49; font-size: 15px; font-weight: 650; line-height: 1.4; }
.product-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.product-actions .btn { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 20px; border-radius: 3px; }
.product-primary-action { min-width: 168px; }
.product-download-action { color: #26384f; background: #fff; border-color: #ccd5df; box-shadow: none; }
.product-download-action:hover { color: var(--product-blue); border-color: var(--product-blue); }
.product-download-action i { width: 17px; font-size: 16px; text-align: center; }
.product-service-row { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 31px; padding-top: 23px; border-top: 1px solid #e1e7ee; }
.product-service-row > div { display: flex; align-items: center; gap: 10px; min-width: 0; padding-right: 10px; }
.product-service-row i { width: 24px; flex: none; color: var(--product-blue); font-size: 20px; text-align: center; }
.product-service-row span { color: #8793a2; font-size: 10px; line-height: 1.45; }
.product-service-row strong { display: block; color: #263950; font-size: 12px; }

.product-section-nav { position: sticky; top: 68px; z-index: 30; background: rgba(255,255,255,.96); border-top: 1px solid #e7ecf2; border-bottom: 1px solid #e2e8ef; backdrop-filter: blur(10px); }
.product-section-nav .container { display: flex; align-items: center; gap: 43px; height: 62px; overflow-x: auto; scrollbar-width: none; }
.product-section-nav .container::-webkit-scrollbar { display: none; }
.product-section-nav a { position: relative; height: 62px; display: flex; align-items: center; flex: none; color: #59687b; font-size: 14px; font-weight: 600; }
.product-section-nav a::after { content: ""; position: absolute; right: 50%; bottom: -1px; left: 50%; height: 3px; background: var(--product-blue); transition: left .2s, right .2s; }
.product-section-nav a:hover, .product-section-nav a.active { color: var(--product-blue); }
.product-section-nav a:hover::after, .product-section-nav a.active::after { right: 0; left: 0; }

.product-section { padding: 88px 0; scroll-margin-top: 128px; }
.product-section-muted { background: #f5f7fa; }
.product-overview-grid { display: grid; grid-template-columns: 270px 1fr; gap: 80px; }
.product-section-heading { position: relative; padding-top: 28px; border-top: 3px solid var(--product-blue); }
.section-index { position: absolute; right: 0; top: 16px; color: #e7edf4; font-size: 64px; font-weight: 800; line-height: 1; }
.product-section-heading p { position: relative; margin-bottom: 8px; color: var(--product-blue); font-size: 11px; font-weight: 700; letter-spacing: 1.6px; }
.product-section-heading h2 { position: relative; color: var(--product-navy); font-size: 30px; }
.product-overview-copy p { margin-bottom: 18px; color: #4f5e70; font-size: 16px; line-height: 2; }
.overview-note { display: flex; gap: 13px; margin-top: 30px; padding: 17px 20px; border-left: 3px solid #e4a11b; background: #fff9ec; color: #73591c; font-size: 13px; line-height: 1.7; }
.overview-note i { width: 20px; flex: none; color: #d2900a; font-size: 18px; text-align: center; }
.product-section-title { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; margin-bottom: 40px; }
.product-section-title > div > span, .product-related-head > div > span { display: block; margin-bottom: 9px; color: var(--product-blue); font-size: 11px; font-weight: 700; letter-spacing: 1.7px; }
.product-section-title h2, .product-related-head h2 { color: var(--product-navy); font-size: 30px; }
.product-section-title > p { max-width: 480px; color: #7a8796; font-size: 14px; text-align: right; }

.product-feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid #dce3eb; border-left: 1px solid #dce3eb; }
.product-feature-card { position: relative; min-height: 190px; padding: 28px 28px 26px; overflow: hidden; background: #fff; border-right: 1px solid #dce3eb; border-bottom: 1px solid #dce3eb; transition: transform .2s ease, box-shadow .2s ease; }
.product-feature-card:hover { z-index: 2; transform: translateY(-3px); box-shadow: 0 18px 40px rgba(11,40,77,.1); }
.feature-number { position: absolute; right: 18px; top: 14px; color: #edf1f5; font-size: 36px; font-weight: 800; }
.feature-mark { width: 38px; height: 38px; margin-bottom: 28px; display: grid; place-items: center; background: #eaf3ff; }
.feature-mark span { position: relative; width: 15px; height: 15px; border: 2px solid var(--product-blue); border-radius: 50%; }
.feature-mark span::after { content: ""; position: absolute; width: 8px; height: 2px; right: -6px; bottom: -3px; background: var(--product-blue); transform: rotate(45deg); }
.product-feature-card h3 { position: relative; max-width: 290px; color: #24364c; font-size: 15px; font-weight: 650; line-height: 1.65; }

.product-specification-wrap { border: 1px solid #dbe2ea; }
.specification-head, .specification-row { display: grid; grid-template-columns: 32% 68%; }
.specification-head { color: #fff; background: var(--product-navy); font-size: 13px; font-weight: 700; }
.specification-head span { padding: 14px 24px; }
.specification-head span + span { border-left: 1px solid rgba(255,255,255,.15); }
.specification-row { min-height: 54px; border-bottom: 1px solid #e1e6ed; }
.specification-row:last-child { border-bottom: 0; }
.specification-row:nth-child(odd) { background: #f7f9fb; }
.specification-row > span, .specification-row > strong { display: flex; align-items: center; padding: 13px 24px; font-size: 14px; }
.specification-row > span { color: #647286; }
.specification-row > strong { border-left: 1px solid #e1e6ed; color: #26384e; font-weight: 600; }
.specification-empty { padding: 32px; color: #7a8796; text-align: center; }
.specification-footnote { margin-top: 13px; color: #8a96a5; font-size: 12px; }
.specification-footnote span { color: #e06749; }

.product-section-dark { position: relative; overflow: hidden; background: var(--product-navy); }
.product-section-dark::after { content: ""; position: absolute; right: -80px; top: -230px; width: 580px; height: 580px; border: 1px solid rgba(255,255,255,.06); border-radius: 50%; box-shadow: 0 0 0 70px rgba(255,255,255,.018), 0 0 0 140px rgba(255,255,255,.012); }
.product-section-title-light { position: relative; z-index: 1; }
.product-section-title-light h2 { color: #fff; }
.product-section-title-light > div > span { color: #4cb7ff; }
.product-section-title-light > p { color: #8da0b7; }
.product-application-grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(5, 1fr); }
.product-application-card { min-height: 198px; padding: 25px 23px; border: 1px solid rgba(255,255,255,.12); border-right: 0; background: rgba(255,255,255,.035); transition: background .2s ease; }
.product-application-card:last-child { border-right: 1px solid rgba(255,255,255,.12); }
.product-application-card:hover { background: rgba(34,139,230,.13); }
.product-application-card > span { display: block; margin-bottom: 35px; color: #536a86; font-size: 11px; }
.product-application-card i { color: #42adf2; font-size: 24px; margin-bottom: 22px; }
.product-application-card h3 { color: #e7edf5; font-size: 14px; font-weight: 600; line-height: 1.6; }

.product-inquiry-section { padding: 76px 0; scroll-margin-top: 128px; background: linear-gradient(110deg, #0a62d7, #073a87); color: #fff; }
.product-inquiry-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; align-items: center; }
.product-inquiry-copy > span { color: #a9d4ff; font-size: 10px; font-weight: 700; letter-spacing: 1.8px; }
.product-inquiry-copy h2 { max-width: 410px; margin: 14px 0 17px; font-size: 34px; line-height: 1.35; }
.product-inquiry-copy p { max-width: 440px; color: #c5dcf5; font-size: 14px; line-height: 1.8; }
.inquiry-contact { margin-top: 31px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.18); }
.inquiry-contact span { display: block; color: #a9c9eb; font-size: 11px; }
.inquiry-contact a { font-size: 24px; font-weight: 700; letter-spacing: 1px; }
.product-inquiry-form { padding: 30px 34px; background: #fff; color: var(--ink); box-shadow: 0 24px 50px rgba(4,27,64,.2); }
.inquiry-form-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; }
.inquiry-form-head strong { color: #122c4c; font-size: 20px; }
.inquiry-form-head span { color: #a2aab5; font-size: 11px; }
.inquiry-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.product-inquiry-form .field { margin-bottom: 14px; }
.product-inquiry-form .field label { margin-bottom: 5px; color: #46566a; font-size: 12px; }
.product-inquiry-form .field input, .product-inquiry-form .field textarea { border-radius: 2px; background: #f7f9fb; font-size: 13px; resize: vertical; }
.product-inquiry-form .btn { width: 100%; display: flex; justify-content: center; align-items: center; gap: 24px; border-radius: 2px; }
.product-inquiry-form .form-note { margin: 10px 0 0; text-align: center; }

.product-related-section { padding: 78px 0 88px; background: #fff; }
.product-related-head { display: flex; justify-content: space-between; align-items: end; margin-bottom: 32px; }
.product-related-head > a { color: var(--product-blue); font-size: 13px; font-weight: 600; }
.product-related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-related-card { display: grid; grid-template-columns: 42% 58%; min-height: 160px; border: 1px solid #e0e6ed; transition: border-color .2s, box-shadow .2s, transform .2s; }
.product-related-card:hover { transform: translateY(-3px); border-color: #b8cce5; box-shadow: 0 14px 32px rgba(14,44,80,.08); }
.related-image { min-width: 0; display: grid; place-items: center; overflow: hidden; background: #f1f4f7; color: var(--product-blue); font-size: 42px; }
.related-image img { width: 100%; height: 100%; object-fit: cover; }
.product-related-card > div:last-child { min-width: 0; padding: 22px 20px; }
.product-related-card > div > span { color: var(--product-blue); font-size: 10px; }
.product-related-card h3 { margin: 8px 0 18px; color: #24364c; font-size: 15px; line-height: 1.45; }
.product-related-card p { color: #7a8796; font-size: 12px; }
.product-related-card b { color: var(--product-blue); }

.product-not-found { min-height: 65vh; display: grid; place-items: center; padding: 100px 0; background: #f5f7fa; }
.product-not-found span { color: #dce5ef; font-size: 80px; font-weight: 800; }
.product-not-found h1 { margin-top: -24px; color: #132c4a; }
.product-not-found p { margin: 8px 0 25px; color: var(--muted); }

@media (max-width: 1040px) {
  .product-hero-grid { gap: 42px; }
  .product-image-stage, .product-image-stage img, .product-image-stage .placeholder-icon { min-height: 330px; }
  .product-service-row { grid-template-columns: 1fr; gap: 12px; }
  .product-service-row span { font-size: 11px; }
  .product-application-grid { grid-template-columns: repeat(3, 1fr); }
  .product-application-card:nth-child(3) { border-right: 1px solid rgba(255,255,255,.12); }
  .product-application-card:nth-child(n+4) { border-top: 0; }
  .product-inquiry-grid { gap: 45px; }
  .product-related-card { grid-template-columns: 1fr; }
  .related-image { aspect-ratio: 16/9; }
}

@media (max-width: 800px) {
  .product-hero-section { padding: 38px 0 44px; }
  .product-hero-grid, .product-overview-grid, .product-inquiry-grid { grid-template-columns: 1fr; }
  .product-hero-grid { gap: 38px; }
  .product-summary-panel h1 { font-size: 34px; }
  .product-overview-grid { gap: 35px; }
  .product-section-heading { max-width: 270px; }
  .product-section-title { align-items: flex-start; flex-direction: column; }
  .product-section-title > p { text-align: left; }
  .product-feature-grid { grid-template-columns: repeat(2, 1fr); }
  .product-application-grid { grid-template-columns: repeat(2, 1fr); }
  .product-application-card:nth-child(2n) { border-right: 1px solid rgba(255,255,255,.12); }
  .product-application-card:nth-child(n+3) { border-top: 0; }
  .product-inquiry-grid { gap: 35px; }
  .product-related-grid { grid-template-columns: 1fr; }
  .product-related-card { grid-template-columns: 35% 65%; }
  .related-image { aspect-ratio: auto; }
}

@media (max-width: 600px) {
  .product-breadcrumb { white-space: nowrap; overflow: hidden; }
  .product-visual-head { padding: 0 13px; }
  .product-image-stage, .product-image-stage img, .product-image-stage .placeholder-icon { min-height: 250px; }
  .product-key-metrics { grid-template-columns: 1fr; }
  .product-actions { display: grid; grid-template-columns: 1fr; }
  .product-actions .btn { width: 100%; }
  .product-section-nav { top: 68px; }
  .product-section-nav .container { gap: 28px; }
  .product-section { padding: 64px 0; }
  .product-feature-grid { grid-template-columns: 1fr; }
  .specification-head, .specification-row { grid-template-columns: 42% 58%; }
  .specification-head span, .specification-row > span, .specification-row > strong { padding: 12px 13px; font-size: 12px; }
  .product-application-grid { grid-template-columns: 1fr; }
  .product-application-card, .product-application-card:nth-child(n) { min-height: 150px; border-right: 1px solid rgba(255,255,255,.12); border-top: 0; }
  .product-application-card:first-child { border-top: 1px solid rgba(255,255,255,.12); }
  .product-application-card > span { margin-bottom: 16px; }
  .product-application-card i { margin-bottom: 12px; }
  .product-inquiry-copy h2 { font-size: 29px; }
  .product-inquiry-form { padding: 24px 20px; }
  .inquiry-form-row { grid-template-columns: 1fr; gap: 0; }
  .product-related-card { grid-template-columns: 39% 61%; }
}

/* ========== 2026 全站专业化视觉系统 ========== */
:root {
  --brand: #075fd8;
  --brand-dark: #064699;
  --navy: #071b37;
  --navy-light: #102c50;
  --ink: #17283e;
  --muted: #667487;
  --line: #dde4ec;
  --bg-alt: #f4f7fa;
  --radius: 4px;
  --shadow: 0 16px 42px rgba(11, 37, 71, .09);
}
body { color: var(--ink); -webkit-font-smoothing: antialiased; }
.container { width: min(1200px, 92%); }
.btn { border-radius: 3px; }
a .fa-arrow-right, button .fa-arrow-right, a .fa-arrow-up-right-from-square { font-size: .82em; transition: transform .2s ease; }
a:hover .fa-arrow-right, button:hover .fa-arrow-right { transform: translateX(3px); }
a:hover .fa-arrow-up-right-from-square { transform: translate(2px, -2px); }
.inner-breadcrumb .fa-chevron-right, .product-breadcrumb .fa-chevron-right { font-size: 8px; opacity: .65; }

/* Header */
.site-header { height: 76px; background: rgba(255,255,255,.97); border-bottom-color: #e1e7ee; box-shadow: 0 2px 12px rgba(10,34,65,.035); }
.product-section-nav { top: 76px; }
.header-inner { height: 76px; }
.logo { min-width: 190px; }
.logo-img { height: 31px; }
.logo-divider { width: 1px; height: 27px; margin-left: 5px; background: #d9e0e8; }
.logo-caption { color: #738094; font-size: 10px; font-weight: 600; line-height: 1.45; letter-spacing: .7px; }
.nav { align-self: stretch; align-items: center; gap: 30px; margin-left: auto; margin-right: 34px; }
.nav a { height: 100%; display: flex; align-items: center; color: #46556a; font-size: 14px; font-weight: 600; }
.nav a.active::after { bottom: -1px; height: 3px; }
.header-actions { display: flex; align-items: center; gap: 19px; }
.header-phone { display: flex; flex-direction: column; padding-left: 18px; border-left: 1px solid #e0e6ed; line-height: 1.25; }
.header-phone span { color: #7f8b9a; font-size: 10px; }
.header-phone strong { color: #24364b; font-size: 13px; letter-spacing: .3px; }
.header-consult { min-width: 112px; height: 38px; display: inline-flex; align-items: center; justify-content: center; gap: 12px; color: #fff; background: var(--brand); font-size: 12px; font-weight: 650; transition: background .2s; }
.header-consult:hover { background: var(--brand-dark); }
.nav-toggle { width: 38px; height: 38px; align-items: center; justify-content: center; }
.nav-toggle span { transition: transform .2s, opacity .2s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Footer */
.site-footer { padding: 0 0 24px; background: #061426; }
.footer-contact-band { min-height: 108px; display: flex; align-items: center; justify-content: space-between; gap: 30px; border-bottom: 1px solid rgba(255,255,255,.11); }
.footer-contact-band div { display: flex; flex-direction: column; }
.footer-contact-band span { color: #7f91a9; font-size: 11px; letter-spacing: .5px; }
.footer-contact-band strong { color: #fff; font-size: 20px; font-weight: 600; }
.footer-contact-band > a { min-width: 164px; height: 44px; display: flex; align-items: center; justify-content: center; gap: 20px; color: #fff; background: var(--brand); font-size: 13px; font-weight: 650; }
.footer-top { grid-template-columns: 1.5fr .75fr .75fr 1.2fr; gap: 60px; padding: 52px 0 43px; }
.footer-brand .logo-img { height: 31px; }
.footer-brand p { max-width: 315px; margin-top: 20px; color: #8290a3; font-size: 13px; line-height: 1.9; }
.footer-service-mark { display: flex; align-items: center; gap: 8px; margin-top: 18px; color: #8090a4; font-size: 10px; }
.footer-service-mark i { width: 6px; height: 6px; border-radius: 50%; background: #27b875; box-shadow: 0 0 0 4px rgba(39,184,117,.1); }
.footer-col h4 { margin-bottom: 20px; color: #fff; font-size: 13px; letter-spacing: .5px; }
.footer-col a, .footer-col p { margin-bottom: 11px; color: #8290a3; font-size: 12px; }
.footer-contact p { margin-bottom: 16px; line-height: 1.5; }
.footer-contact p span { display: block; color: #586b82; font-size: 9px; }
.footer-contact p a { margin: 0; color: #a9b5c5; font-size: 13px; }
.footer-bottom { margin-top: 0; padding-top: 21px; display: flex; justify-content: space-between; color: #53657b; font-size: 10px; text-align: left; }

/* Shared inner page hero */
.inner-hero { position: relative; min-height: 322px; display: flex; align-items: center; overflow: hidden; color: #fff; background: linear-gradient(110deg, #071a35 0%, #0b2d56 63%, #0a3b70 100%); }
.inner-hero-pattern { position: absolute; inset: 0; opacity: .7; background-image: linear-gradient(rgba(255,255,255,.026) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.026) 1px, transparent 1px); background-size: 44px 44px; mask-image: linear-gradient(90deg, transparent, #000 55%, #000); }
.inner-hero::after { content: ""; position: absolute; right: -90px; bottom: -330px; width: 680px; height: 680px; border: 1px solid rgba(92,178,255,.13); border-radius: 50%; box-shadow: 0 0 0 65px rgba(75,166,247,.025), 0 0 0 130px rgba(75,166,247,.018); }
.inner-hero-content { position: relative; z-index: 2; padding-top: 24px; }
.inner-breadcrumb { position: absolute; top: -45px; display: flex; align-items: center; gap: 9px; color: #7189a6; font-size: 11px; }
.inner-breadcrumb a { color: #8da0b7; }
.inner-breadcrumb b { color: #bed0e2; font-weight: 500; }
.inner-eyebrow { display: block; margin-bottom: 13px; color: #52b8ff; font-size: 11px; font-weight: 700; letter-spacing: 1.9px; }
.inner-hero h1 { max-width: 850px; margin-bottom: 13px; color: #fff; font-size: clamp(32px, 4vw, 43px); line-height: 1.3; letter-spacing: -.5px; }
.inner-hero p { max-width: 680px; color: #9fb1c7; font-size: 15px; line-height: 1.8; }
.inner-hero-code { position: absolute; z-index: 2; right: max(4%, calc((100vw - 1200px)/2)); bottom: 26px; color: rgba(255,255,255,.18); font-size: 10px; letter-spacing: 1.8px; }
.standard-section-head { max-width: 620px; margin-bottom: 42px; }
.standard-section-head > span, .solution-process-head > span { display: block; margin-bottom: 10px; color: var(--brand); font-size: 11px; font-weight: 700; letter-spacing: 1.7px; }
.standard-section-head h2, .solution-process-head h2 { color: var(--navy); font-size: 30px; line-height: 1.35; }
.standard-section-head p, .solution-process-head p { margin-top: 10px; color: #7a8797; font-size: 14px; }

/* Shared product catalog */
.catalog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.catalog-card { min-width: 0; display: flex; flex-direction: column; overflow: hidden; background: #fff; border: 1px solid #dee5ed; transition: transform .2s, box-shadow .2s, border-color .2s; }
.catalog-card:hover { transform: translateY(-4px); border-color: #bdcfe3; box-shadow: 0 19px 45px rgba(11,38,75,.1); }
.catalog-card-media { position: relative; aspect-ratio: 1.48/1; display: grid; place-items: center; overflow: hidden; background: #f0f3f6; color: var(--brand); font-size: 54px; }
.catalog-card-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 68%, rgba(5,24,48,.06)); pointer-events: none; }
.catalog-card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .35s ease; }
.catalog-card:hover .catalog-card-media img { transform: scale(1.025); }
.catalog-card-body { flex: 1; display: flex; flex-direction: column; min-height: 244px; padding: 24px 25px 22px; }
.catalog-card-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: 11px; }
.catalog-card-meta span { color: var(--brand); font-size: 11px; font-weight: 700; letter-spacing: .5px; }
.catalog-card-meta i { color: #aab4c0; font-size: 10px; font-style: normal; letter-spacing: .9px; }
.catalog-card h3 { margin-bottom: 10px; color: #1b304b; font-size: 18px; line-height: 1.45; }
.catalog-card-body > p { flex: 1; display: -webkit-box; overflow: hidden; color: #6a788b; font-size: 13px; line-height: 1.75; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.catalog-card-link { margin-top: 20px; padding-top: 16px; display: flex; justify-content: space-between; color: #667589; border-top: 1px solid #e7ebf0; font-size: 11px; font-weight: 600; }
.catalog-card-link b { color: var(--brand); font-size: 15px; }

/* Homepage */
.home-hero { position: relative; min-height: 720px; padding: 80px 0 0; overflow: hidden; color: #fff; background: radial-gradient(900px 550px at 77% 30%, #123e70 0%, transparent 60%), linear-gradient(110deg, #06162d 0%, #09284e 64%, #0b3969 100%); }
.home-hero::after { content: ""; position: absolute; right: -240px; top: -380px; width: 950px; height: 950px; border: 1px solid rgba(76,175,255,.12); border-radius: 50%; box-shadow: 0 0 0 90px rgba(76,175,255,.018), 0 0 0 180px rgba(76,175,255,.014); }
.home-hero-grid-bg { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(90deg, transparent 20%, #000); }
.home-hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.08fr .92fr; gap: 95px; align-items: center; }
.home-eyebrow { display: flex; align-items: center; gap: 10px; margin-bottom: 21px; color: #83b0da; font-size: 11px; font-weight: 700; letter-spacing: 1.9px; }
.home-eyebrow i { width: 25px; height: 1px; background: #37a9f7; }
.home-hero-copy h1 { margin-bottom: 22px; color: #fff; font-size: clamp(44px, 5.2vw, 64px); line-height: 1.16; letter-spacing: -1.8px; }
.home-hero-copy h1 span { color: #4cb6ff; }
.home-hero-copy > p { max-width: 610px; color: #9fb3c9; font-size: 16px; line-height: 1.9; }
.home-hero-actions { display: flex; align-items: center; gap: 30px; margin-top: 32px; }
.home-primary-btn { min-width: 178px; height: 50px; display: flex; align-items: center; justify-content: center; gap: 28px; color: #fff; background: var(--brand); font-size: 13px; font-weight: 650; transition: background .2s; }
.home-primary-btn:hover { background: #0b70ee; }
.home-text-btn { color: #d7e5f2; font-size: 13px; }
.home-text-btn span { margin-left: 8px; color: #4bb6ff; }
.home-hero-proof { display: grid; grid-template-columns: repeat(3, 1fr); max-width: 520px; margin-top: 45px; padding-top: 25px; border-top: 1px solid rgba(255,255,255,.13); }
.home-hero-proof > div { display: flex; align-items: center; gap: 10px; border-right: 1px solid rgba(255,255,255,.11); }
.home-hero-proof > div:last-child { border: 0; padding-left: 15px; }
.home-hero-proof strong { color: #fff; font-size: 27px; line-height: 1; }
.home-hero-proof sup { color: #56b9fb; font-size: 10px; }
.home-hero-proof span { color: #8196ae; font-size: 10px; line-height: 1.5; }
.home-hero-product { position: relative; display: block; overflow: hidden; transition: transform .25s ease, box-shadow .25s ease; }
.home-hero-product:hover { transform: translateY(-4px); }
.hero-product-image { aspect-ratio: 1.32/1; display: grid; place-items: center; overflow: hidden; color: var(--brand); font-size: 70px; }
.hero-product-image img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.04); transition: transform .45s ease; }
.home-hero-product:hover .hero-product-image img { transform: scale(1.06); }
.hero-product-info { position: absolute; right: 0; bottom: 0; left: 0; min-height: 94px; padding: 40px 22px 18px; display: flex; align-items: flex-end; justify-content: space-between; background: linear-gradient(180deg, transparent 0%, rgba(3,18,36,.35) 55%, rgba(3,18,36,.6) 100%); }
.hero-product-info span { color: rgba(120,190,240,.9); font-size: 10px; text-transform: uppercase; letter-spacing: 1px; }
.hero-product-info h2 { margin-top: 4px; color: rgba(255,255,255,.96); font-size: 18px; font-weight: 600; }
.hero-product-info > b { width: 34px; height: 34px; display: grid; place-items: center; color: rgba(255,255,255,.85); border: 1px solid rgba(255,255,255,.18); font-weight: 400; transition: background .2s ease, border-color .2s ease; }
.home-hero-product:hover .hero-product-info > b { background: var(--brand); border-color: var(--brand); }
.home-capability-bar { position: relative; z-index: 3; margin-top: 70px; min-height: 92px; display: grid; grid-template-columns: repeat(4, 1fr); color: #dce8f4; background: rgba(5,20,39,.84); border: 1px solid rgba(255,255,255,.11); border-bottom: 0; }
.home-capability-bar > div { display: flex; align-items: center; gap: 14px; padding: 20px 25px; border-right: 1px solid rgba(255,255,255,.1); }
.home-capability-bar > div:last-child { border: 0; }
.home-capability-bar i { width: 27px; flex: none; color: #49b4fc; font-size: 22px; text-align: center; }
.home-capability-bar span { color: #5f7792; font-size: 8px; letter-spacing: .4px; }
.home-capability-bar strong { display: block; color: #d9e5f1; font-size: 12px; letter-spacing: 0; }

.home-section { padding: 96px 0; }
.home-products-section { background: #fff; }
.home-section-head { display: grid; grid-template-columns: 1fr 1fr auto; align-items: end; gap: 45px; margin-bottom: 41px; }
.home-section-head > div > span { display: block; margin-bottom: 10px; color: var(--brand); font-size: 11px; font-weight: 700; letter-spacing: 1.6px; }
.home-section-head h2 { color: var(--navy); font-size: 32px; }
.home-section-head > p { color: #768396; font-size: 14px; line-height: 1.8; }
.home-section-head > a { padding-bottom: 4px; color: #526175; font-size: 12px; font-weight: 600; white-space: nowrap; }
.home-section-head > a b { margin-left: 10px; color: var(--brand); }
.home-solutions-section { position: relative; padding: 96px 0 105px; overflow: hidden; background: var(--navy); }
.home-solutions-section::after { content: ""; position: absolute; right: -240px; bottom: -420px; width: 800px; height: 800px; border: 1px solid rgba(255,255,255,.05); border-radius: 50%; box-shadow: 0 0 0 80px rgba(255,255,255,.012), 0 0 0 160px rgba(255,255,255,.01); }
.home-section-head-light { position: relative; z-index: 1; }
.home-section-head-light h2 { max-width: 500px; color: #fff; }
.home-section-head-light > div > span { color: #4cb7ff; }
.home-section-head-light > p { color: #8699b1; }
.home-section-head-light > a { color: #c9d7e5; }
.home-solution-grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.home-solution-card { min-height: 390px; padding: 32px 30px; display: flex; flex-direction: column; color: #fff; border: 1px solid rgba(255,255,255,.12); border-left: 0; background: rgba(255,255,255,.025); transition: background .2s; }
.home-solution-card:first-child { border-left: 1px solid rgba(255,255,255,.12); }
.home-solution-card:hover { background: rgba(32,133,222,.11); }
.solution-index { color: #4f6782; font-size: 11px; }
.home-solution-card > i { color: #48b4fc; font-size: 34px; margin: 54px 0 36px; }
.solution-line-icon { height: 42px; display: flex; align-items: center; gap: 5px; margin: 43px 0 29px; }
.solution-line-icon i { width: 3px; background: #43aff7; }
.solution-line-icon i:nth-child(1) { height: 16px; }.solution-line-icon i:nth-child(2) { height: 35px; }.solution-line-icon i:nth-child(3) { height: 25px; }.solution-line-icon i:nth-child(4) { height: 42px; }
.home-solution-card h3 { margin-bottom: 13px; color: #fff; font-size: 20px; }
.home-solution-card p { color: #8094ab; font-size: 13px; line-height: 1.8; }
.home-solution-card ul { margin: 18px 0 0; display: flex; flex-wrap: wrap; gap: 7px; list-style: none; }
.home-solution-card li { padding: 5px 8px; color: #8ea8c1; border: 1px solid rgba(255,255,255,.12); font-size: 9px; }
.home-solution-card > b { margin-top: auto; color: #4eb7fc; font-size: 11px; font-weight: 600; }

.home-service-section { background: #f4f7fa; }
.home-service-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 90px; }
.home-service-intro > span { color: var(--brand); font-size: 11px; font-weight: 700; letter-spacing: 1.6px; }
.home-service-intro h2 { margin: 13px 0 18px; color: var(--navy); font-size: 31px; line-height: 1.45; }
.home-service-intro p { color: #6f7d8f; font-size: 14px; line-height: 1.9; }
.home-service-intro a { display: inline-block; margin-top: 27px; color: var(--brand); font-size: 12px; font-weight: 600; }
.home-service-steps { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid #d6dee7; border-left: 1px solid #d6dee7; }
.home-service-steps > div { position: relative; min-height: 185px; padding: 26px 25px; background: #fff; border-right: 1px solid #d6dee7; border-bottom: 1px solid #d6dee7; }
.home-service-steps span { color: #c5cdd7; font-size: 10px; }
.home-service-steps i { position: absolute; right: 23px; top: 25px; width: 8px; height: 8px; border: 2px solid var(--brand); border-radius: 50%; box-shadow: 0 0 0 5px #e9f2fd; }
.home-service-steps h3 { margin: 35px 0 7px; color: #263950; font-size: 16px; }
.home-service-steps p { color: #7a8796; font-size: 12px; }

.site-consult-banner { color: #fff; background: linear-gradient(105deg, #075fd8, #063c8a); }
.site-consult-banner .container { min-height: 175px; display: flex; align-items: center; justify-content: space-between; gap: 35px; }
.site-consult-banner span { color: #a6d3ff; font-size: 9px; font-weight: 700; letter-spacing: 1.8px; }
.site-consult-banner h2 { margin-top: 9px; color: #fff; font-size: 26px; }
.site-consult-banner a { min-width: 166px; height: 48px; display: flex; align-items: center; justify-content: center; gap: 20px; color: #18334f; background: #fff; font-size: 12px; font-weight: 650; }
.site-consult-banner a b { color: var(--brand); }

/* Product listing */
.listing-section { padding: 68px 0 95px; background: #f7f9fb; }
.listing-toolbar { margin-bottom: 34px; display: flex; align-items: center; justify-content: space-between; gap: 25px; border-bottom: 1px solid #dfe5ec; }
.listing-toolbar .filters { margin: 0; gap: 35px; }
.listing-toolbar .filter-btn { position: relative; height: 58px; padding: 0; color: #6d7a8c; background: transparent; border: 0; border-radius: 0; font-size: 13px; font-weight: 600; }
.listing-toolbar .filter-btn::after { content: ""; position: absolute; right: 50%; bottom: -1px; left: 50%; height: 3px; background: var(--brand); transition: left .2s, right .2s; }
.listing-toolbar .filter-btn.active, .listing-toolbar .filter-btn:hover { color: var(--brand); background: transparent; }
.listing-toolbar .filter-btn.active::after, .listing-toolbar .filter-btn:hover::after { right: 0; left: 0; }
.listing-toolbar .filter-btn small { margin-left: 4px; font-size: 9px; }
.listing-count { color: #9aa3af; font-size: 11px; }
.listing-count b { color: var(--brand); }
.selection-help { padding: 58px 0; background: #fff; }
.selection-help-grid { display: grid; grid-template-columns: 70px 1fr auto; align-items: center; gap: 27px; }
.selection-help-icon { width: 70px; height: 70px; display: grid; place-items: center; background: #eaf3ff; }
.selection-help-icon i { color: var(--brand); font-size: 28px; }
.selection-help-grid > div:nth-child(2) > span { color: var(--brand); font-size: 9px; font-weight: 700; letter-spacing: 1.4px; }
.selection-help-grid h2 { margin: 4px 0 2px; color: var(--navy); font-size: 24px; }
.selection-help-grid p { color: #798697; font-size: 13px; }
.selection-help-grid > a { min-width: 170px; height: 44px; display: flex; align-items: center; justify-content: center; gap: 15px; color: #fff; background: var(--brand); font-size: 12px; font-weight: 650; }

/* Solutions */
.solutions-intro-section { padding: 72px 0; background: #fff; }
.solutions-intro-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 100px; align-items: end; }
.solutions-intro-grid > div > span { color: var(--brand); font-size: 11px; font-weight: 700; letter-spacing: 1.6px; }
.solutions-intro-grid h2 { margin-top: 11px; color: var(--navy); font-size: 30px; line-height: 1.45; }
.solutions-intro-grid > p { padding-left: 30px; border-left: 2px solid var(--brand); color: #687689; font-size: 14px; line-height: 2; }
.solutions-catalog-section { padding: 0 0 95px; background: #f5f7fa; }
.solution-detail-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; padding-top: 1px; background: #dce3eb; }
.solution-detail-card { position: relative; min-height: 420px; padding: 42px 40px; display: flex; flex-direction: column; overflow: hidden; background: #fff; }
.solution-detail-wide { grid-column: 1/-1; min-height: 390px; display: grid; grid-template-columns: .8fr 1.7fr; grid-template-rows: 1fr auto; gap: 20px 80px; background: var(--navy); color: #fff; }
.solution-card-number { position: absolute; right: 30px; top: 22px; color: #eef2f6; font-size: 52px; font-weight: 800; }
.solution-detail-wide .solution-card-number { color: rgba(255,255,255,.055); font-size: 100px; }
.solution-card-title { position: relative; z-index: 1; }
.solution-card-title > span { color: var(--brand); font-size: 9px; font-weight: 700; letter-spacing: 1.6px; }
.solution-card-title h2 { margin: 11px 0 13px; color: var(--navy); font-size: 24px; }
.solution-card-title p { max-width: 520px; color: #778497; font-size: 13px; line-height: 1.85; }
.solution-detail-wide .solution-card-title { align-self: center; }
.solution-detail-wide .solution-card-title > span { color: #4db8ff; }
.solution-detail-wide .solution-card-title h2 { color: #fff; font-size: 29px; }
.solution-detail-wide .solution-card-title p { color: #8499b1; }
.solution-card-icon { width: 44px; margin: 60px 0 30px; color: var(--brand); font-size: 36px; text-align: center; }
.solution-detail-card ul { margin-top: 30px; display: grid; grid-template-columns: repeat(3, 1fr); list-style: none; border-top: 1px solid #e2e7ed; border-bottom: 1px solid #e2e7ed; }
.solution-detail-card li { padding: 13px 5px; color: #657386; border-right: 1px solid #e2e7ed; font-size: 10px; text-align: center; }
.solution-detail-card li:last-child { border: 0; }
.solution-detail-card > a { margin-top: auto; color: var(--brand); font-size: 11px; font-weight: 650; }
.solution-system-flow { align-self: center; display: flex; align-items: center; }
.solution-system-flow > div { width: 120px; min-height: 125px; padding: 16px; border: 1px solid rgba(255,255,255,.13); }
.solution-system-flow i { display: block; margin-bottom: 22px; color: #4eb9ff; font-size: 9px; font-style: normal; }
.solution-system-flow strong { display: block; color: #eaf2fa; font-size: 14px; }
.solution-system-flow span { color: #7289a3; font-size: 9px; }
.solution-system-flow > b { padding: 0 8px; color: #3c5d7f; font-weight: 400; }
.solution-detail-wide > a { grid-column: 1/-1; padding-top: 20px; color: #4db7ff; border-top: 1px solid rgba(255,255,255,.1); }
.solution-process-section { padding: 88px 0 95px; background: #fff; }
.solution-process-head { max-width: 620px; margin-bottom: 38px; }
.solution-process-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #dae2ea; border-left: 1px solid #dae2ea; }
.solution-process-grid > div { min-height: 180px; padding: 29px 25px; border-right: 1px solid #dae2ea; border-bottom: 1px solid #dae2ea; }
.solution-process-grid span { color: var(--brand); font-size: 9px; font-weight: 700; }
.solution-process-grid h3 { margin: 35px 0 8px; color: #253950; font-size: 16px; }
.solution-process-grid p { color: #7b8796; font-size: 11px; line-height: 1.7; }

/* About */
.about-story-section { padding: 95px 0; background: #fff; }
.about-story-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 110px; align-items: center; }
.about-story-mark { position: relative; min-height: 390px; display: grid; place-items: center; overflow: hidden; color: #fff; background: var(--navy); }
.about-story-mark::before { content: ""; position: absolute; width: 340px; height: 340px; border: 1px solid rgba(76,181,255,.15); border-radius: 50%; box-shadow: 0 0 0 45px rgba(76,181,255,.025), 0 0 0 90px rgba(76,181,255,.016); }
.about-story-mark > span { position: relative; font-size: 108px; font-weight: 800; letter-spacing: -8px; }
.about-story-mark > small { position: absolute; left: 30px; bottom: 25px; color: #54708e; font-size: 8px; letter-spacing: 1.8px; }
.about-story-copy > span, .about-history-head > span { color: var(--brand); font-size: 11px; font-weight: 700; letter-spacing: 1.6px; }
.about-story-copy h2 { margin: 12px 0 24px; color: var(--navy); font-size: 33px; line-height: 1.45; }
.about-story-copy > p { margin-bottom: 14px; color: #667487; font-size: 14px; line-height: 2; }
.about-values-inline { display: flex; flex-wrap: wrap; gap: 25px; margin-top: 26px; padding-top: 23px; border-top: 1px solid #e0e6ed; }
.about-values-inline span { display: flex; align-items: center; gap: 8px; color: #34475e; font-size: 12px; font-weight: 600; }
.about-values-inline i { width: 7px; height: 7px; background: var(--brand); transform: rotate(45deg); }
.about-numbers-section { background: var(--brand); color: #fff; }
.about-numbers-grid { min-height: 160px; display: grid; grid-template-columns: repeat(4, 1fr); }
.about-numbers-grid > div { display: flex; flex-direction: column; justify-content: center; padding-left: 38px; border-left: 1px solid rgba(255,255,255,.17); }
.about-numbers-grid > div:last-child { border-right: 1px solid rgba(255,255,255,.17); }
.about-numbers-grid strong { font-size: 38px; line-height: 1.2; }
.about-numbers-grid small { margin-left: 3px; font-size: 11px; }
.about-numbers-grid span { color: #add3ff; font-size: 10px; }
.about-capability-section { padding: 95px 0; background: #f5f7fa; }
.about-capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #dbe2ea; border-left: 1px solid #dbe2ea; }
.about-capability-grid article { position: relative; min-height: 300px; padding: 30px 27px; background: #fff; border-right: 1px solid #dbe2ea; border-bottom: 1px solid #dbe2ea; }
.about-capability-grid article > span { position: absolute; right: 20px; top: 15px; color: #edf1f5; font-size: 38px; font-weight: 800; }
.about-capability-grid i { width: 37px; margin: 42px 0 36px; color: var(--brand); font-size: 32px; text-align: center; }
.about-capability-grid h3 { margin-bottom: 10px; color: #263a51; font-size: 16px; }
.about-capability-grid p { color: #778496; font-size: 12px; line-height: 1.8; }
.about-history-section { padding: 95px 0; background: #fff; }
.about-history-grid { display: grid; grid-template-columns: .65fr 1.35fr; gap: 100px; }
.about-history-head h2 { margin-top: 10px; color: var(--navy); font-size: 31px; }
.about-history-head p { margin-top: 12px; color: #758295; font-size: 13px; line-height: 1.8; }
.about-timeline { border-left: 1px solid #dce3eb; }
.about-timeline > div { position: relative; min-height: 90px; display: grid; grid-template-columns: 80px 1fr; gap: 30px; padding: 0 0 30px 38px; }
.about-timeline > div:last-child { padding-bottom: 0; }
.about-timeline i { position: absolute; left: -5px; top: 7px; width: 9px; height: 9px; background: #fff; border: 2px solid var(--brand); border-radius: 50%; }
.about-timeline strong { color: var(--brand); font-size: 17px; }
.about-timeline span { color: #718093; font-size: 12px; line-height: 1.8; }
.about-timeline b { display: block; color: #293d54; font-size: 14px; }

/* Contact */
.contact-main-section { padding: 90px 0; background: #f4f7fa; }
.contact-pro-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: start; }
.contact-info-panel > span, .contact-form-title > div > span { color: var(--brand); font-size: 11px; font-weight: 700; letter-spacing: 1.6px; }
.contact-info-panel > h2 { margin: 10px 0 12px; color: var(--navy); font-size: 29px; }
.contact-info-panel > p { color: #748194; font-size: 13px; line-height: 1.9; }
.contact-method-list { margin-top: 30px; border-top: 1px solid #dbe2ea; }
.contact-method-list > * { min-height: 104px; display: flex; align-items: center; gap: 20px; border-bottom: 1px solid #dbe2ea; }
.contact-method-list i { width: 29px; flex: none; color: var(--brand); font-size: 24px; text-align: center; }
.contact-method-list span { display: flex; flex-direction: column; }
.contact-method-list small { color: #919ba8; font-size: 9px; }
.contact-method-list strong { color: #263a51; font-size: 16px; }
.contact-method-list i { color: #8b96a4; font-size: 9px; font-style: normal; }
.contact-response-note { display: flex; align-items: center; gap: 13px; margin-top: 25px; padding: 16px; background: #e8f2ff; }
.contact-response-note > i { width: 8px; height: 8px; border-radius: 50%; background: #22a96c; box-shadow: 0 0 0 5px rgba(34,169,108,.1); }
.contact-response-note span { color: #728297; font-size: 10px; }
.contact-response-note strong { display: block; color: #2b425d; font-size: 12px; }
.contact-pro-form { padding: 38px 40px; background: #fff; border: 1px solid #dde4ec; box-shadow: var(--shadow); }
.contact-form-title { display: flex; align-items: end; justify-content: space-between; margin-bottom: 28px; }
.contact-form-title h2 { margin-top: 4px; color: var(--navy); font-size: 26px; }
.contact-form-title > small { color: #9ba4b0; font-size: 9px; }
.contact-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 17px; }
.contact-pro-form .field { margin-bottom: 16px; }
.contact-pro-form .field label { color: #42536a; font-size: 11px; }
.contact-pro-form .field input, .contact-pro-form .field textarea, .contact-pro-form .field select { border-radius: 2px; background: #f7f9fb; font-size: 12px; }
.contact-pro-form .field textarea { resize: vertical; }
.contact-pro-form .btn { width: 100%; display: flex; align-items: center; justify-content: center; gap: 25px; border-radius: 2px; }
.contact-pro-form .form-note { text-align: center; }
.contact-preparation-section { padding: 78px 0 90px; background: #fff; }
.contact-preparation-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #dce3eb; border-left: 1px solid #dce3eb; }
.contact-preparation-grid > div { min-height: 155px; padding: 23px 24px; border-right: 1px solid #dce3eb; border-bottom: 1px solid #dce3eb; }
.contact-preparation-grid span { color: #c2cad4; font-size: 10px; }
.contact-preparation-grid strong { display: block; margin: 25px 0 5px; color: #293d54; font-size: 14px; }
.contact-preparation-grid p { color: #7c8998; font-size: 11px; }

@media (max-width: 1080px) {
  .logo-caption, .header-phone { display: none; }
  .logo { min-width: 120px; }
  .logo-divider { display: none; }
  .nav { gap: 22px; margin-right: 22px; }
  .home-hero-inner { gap: 55px; }
  .footer-top { gap: 35px; }
  .product-section-nav { top: 76px; }
}

@media (max-width: 860px) {
  .site-header, .header-inner { height: 68px; }
  .header-consult { display: none; }
  .nav-toggle { position: relative; z-index: 60; display: flex; margin-left: auto; color: #17283e; }
  .nav-toggle::before { content: "☰"; font-size: 24px; font-weight: 400; line-height: 1; }
  .nav-toggle.open::before { content: "×"; font-size: 29px; }
  .nav-toggle span { display: none; }
  .nav { position: absolute; top: 68px; left: 0; right: 0; height: auto; margin: 0; padding: 12px 4%; display: none; align-items: stretch; gap: 0; background: #fff; border-bottom: 1px solid #dde4ec; box-shadow: 0 14px 30px rgba(8,30,57,.1); }
  .nav.open { display: flex; }
  .nav a { height: auto; padding: 13px 5px; }
  .nav a.active::after { display: none; }
  .product-section-nav { top: 68px; }
  .home-hero { min-height: auto; padding-top: 65px; }
  .home-hero-inner { grid-template-columns: 1fr; }
  .home-hero-product { max-width: 600px; }
  .home-capability-bar { margin-top: 50px; grid-template-columns: repeat(2, 1fr); }
  .home-capability-bar > div:nth-child(2) { border-right: 0; }
  .home-capability-bar > div:nth-child(-n+2) { border-bottom: 1px solid rgba(255,255,255,.1); }
  .home-section-head { grid-template-columns: 1fr auto; }
  .home-section-head > p { grid-column: 1/-1; grid-row: 2; }
  .home-section-head > a { grid-column: 2; grid-row: 1; }
  .catalog-grid { grid-template-columns: repeat(2, 1fr); }
  .home-solution-grid { grid-template-columns: 1fr 1fr; }
  .home-solution-card:first-child { grid-column: 1/-1; }
  .home-service-grid, .solutions-intro-grid, .about-story-grid, .about-history-grid, .contact-pro-grid { grid-template-columns: 1fr; gap: 50px; }
  .solution-detail-wide { grid-template-columns: 1fr; }
  .solution-detail-wide > a { grid-column: auto; }
  .solution-process-grid, .about-capability-grid, .contact-preparation-grid { grid-template-columns: repeat(2, 1fr); }
  .about-story-mark { max-width: 600px; width: 100%; }
  .about-numbers-grid { grid-template-columns: repeat(2, 1fr); }
  .about-numbers-grid > div { min-height: 130px; border-bottom: 1px solid rgba(255,255,255,.17); }
  .about-numbers-grid > div:nth-child(2) { border-right: 1px solid rgba(255,255,255,.17); }
  .about-numbers-grid > div:nth-child(n+3) { border-bottom: 0; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .container { width: min(100% - 32px, 1200px); }
  .logo-img { height: 28px; }
  .inner-hero { min-height: 285px; }
  .inner-breadcrumb { top: -35px; }
  .inner-hero h1 { font-size: 31px; }
  .inner-hero p { font-size: 13px; }
  .home-hero-copy h1 { font-size: 40px; }
  .home-hero-copy > p { font-size: 14px; }
  .home-hero-actions { align-items: flex-start; flex-direction: column; gap: 18px; }
  .home-hero-proof { gap: 10px; }
  .home-hero-proof span { font-size: 11px; }
  .home-hero-proof > div { align-items: flex-start; flex-direction: column; }
  .home-hero-proof > div:last-child { padding-left: 8px; }
  .home-capability-bar { grid-template-columns: 1fr; }
  .home-capability-bar > div { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.1); }
  .home-section { padding: 70px 0; }
  .home-section-head { display: flex; align-items: flex-start; flex-direction: column; gap: 14px; }
  .catalog-grid { grid-template-columns: 1fr; }
  .home-solution-grid { grid-template-columns: 1fr; }
  .home-solution-card:first-child { grid-column: auto; }
  .home-solution-card { min-height: 340px; border-left: 1px solid rgba(255,255,255,.12); border-top: 0; }
  .home-solution-card:first-child { border-top: 1px solid rgba(255,255,255,.12); }
  .home-service-steps { grid-template-columns: 1fr; }
  .site-consult-banner .container, .footer-contact-band { align-items: flex-start; flex-direction: column; justify-content: center; padding: 35px 0; }
  .site-consult-banner h2 { font-size: 22px; }
  .listing-toolbar { align-items: flex-start; }
  .listing-toolbar .filters { gap: 23px; overflow-x: auto; flex-wrap: nowrap; }
  .listing-toolbar .filter-btn { flex: none; }
  .listing-count { display: none; }
  .selection-help-grid { grid-template-columns: 55px 1fr; }
  .selection-help-icon { width: 55px; height: 55px; }
  .selection-help-grid > a { grid-column: 1/-1; }
  .solutions-intro-grid { gap: 25px; }
  .solutions-intro-grid > p { padding-left: 18px; }
  .solution-detail-list { grid-template-columns: 1fr; }
  .solution-detail-wide { grid-column: auto; padding: 35px 25px; }
  .solution-system-flow { align-items: stretch; flex-direction: column; }
  .solution-system-flow > div { width: 100%; min-height: 80px; }
  .solution-system-flow i { margin-bottom: 8px; }
  .solution-system-flow > b { align-self: center; padding: 5px; transform: rotate(90deg); }
  .solution-detail-card { min-height: 390px; padding: 35px 25px; }
  .solution-process-grid, .about-capability-grid, .contact-preparation-grid { grid-template-columns: 1fr; }
  .about-story-section { padding: 70px 0; }
  .about-story-mark { min-height: 300px; }
  .about-story-mark > span { font-size: 80px; }
  .about-story-copy h2 { font-size: 28px; }
  .about-numbers-grid { grid-template-columns: 1fr 1fr; }
  .about-numbers-grid > div { padding-left: 20px; }
  .about-numbers-grid strong { font-size: 30px; }
  .about-timeline > div { grid-template-columns: 60px 1fr; gap: 10px; padding-left: 24px; }
  .contact-main-section { padding: 65px 0; }
  .contact-pro-form { padding: 28px 20px; }
  .contact-form-row { grid-template-columns: 1fr; gap: 0; }
  .footer-top { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; gap: 5px; }
}