:root {
  --primary: #0B2A4A;
  --accent: #0EA5E9;
  --accent-light: #E0F2FE;
  --accent-soft: #F0F9FF;
  --cta: #0284C7;
  --cta-hover: #0369A1;
  --text: #1E293B;
  --text-muted: #64748B;
  --bg: #FFFFFF;
  --bg-soft: #F8FAFC;
  --bg-blue: #F0F9FF;
  --border: #E2E8F0;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
  --max-width: 1240px;
  --font: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--cta); text-decoration: none; }
a:hover { color: var(--cta-hover); }

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

/* Topbar */
.topbar {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
  padding: 8px 0;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.topbar a { color: var(--text-muted); display: inline-flex; align-items: center; gap: 6px; }
.topbar a:hover { color: var(--cta); }
.topbar .lang-switch { display: flex; gap: 10px; align-items: center; }
.topbar select {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  cursor: pointer;
}

/* Header */
header.main-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
header .container { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo img { height: 22px; width: auto; }

nav.desktop-nav { display: flex; align-items: center; gap: 32px; }
.nav-link { color: var(--text); font-weight: 500; font-size: 15px; position: relative; padding: 8px 0; }
.nav-link:hover { color: var(--cta); }
.nav-link.has-submenu::after { content: '▾'; margin-left: 4px; font-size: 11px; }

.submenu-wrap { position: relative; }
/* Invisible bridge so hover doesn't break when crossing the gap */
.submenu-wrap::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 12px;
  display: block;
}
.submenu {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 12px;
  min-width: 220px;
}
.submenu-wrap:hover .submenu { display: block; }
.submenu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--text);
  font-size: 14px;
}
.submenu a:hover { background: var(--bg-blue); color: var(--cta); }
.submenu-icon {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--accent-light); display: flex; align-items: center; justify-content: center;
  color: var(--cta); font-size: 16px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 22px; border-radius: 8px; font-weight: 600; font-size: 14px;
  border: none; cursor: pointer; transition: all .2s;
}
.btn-primary { background: var(--cta); color: #fff; }
.btn-primary:hover { background: var(--cta-hover); color: #fff; }
.btn-outline { background: transparent; color: var(--cta); border: 1.5px solid var(--cta); }
.btn-outline:hover { background: var(--accent-soft); }
.btn-light { background: #fff; color: var(--cta); }
.btn-outline-light { background: rgba(255,255,255,0.1); color: #fff; border: 1.5px solid rgba(255,255,255,0.5); }
.btn-outline-light:hover { background: rgba(255,255,255,0.2); color: #fff; }

.mobile-toggle { display: none; background: none; border: none; font-size: 24px; color: var(--text); }

/* Hero */
.hero {
  position: relative;
  background: linear-gradient(135deg, #ffffff 0%, #F0F9FF 60%, #E0F2FE 100%);
  padding: 80px 0 100px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(14,165,233,0.12) 0%, transparent 40%),
    radial-gradient(circle at 20% 80%, rgba(14,165,233,0.08) 0%, transparent 35%);
  pointer-events: none;
}
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; position: relative; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(14,165,233,0.1); color: var(--cta);
  padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 600; margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(36px, 5vw, 58px);
  line-height: 1.1;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.hero h1 span { color: var(--cta); }
.hero p.lead {
  font-size: 18px; color: var(--text-muted); max-width: 540px; margin-bottom: 32px; line-height: 1.7;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-visual { position: relative; display: flex; align-items: center; justify-content: center; min-height: 420px; }
.hero-visual img.main-device {
  max-height: 360px; width: auto; filter: drop-shadow(0 24px 40px rgba(11,42,74,0.18));
  position: relative; z-index: 2; transform: rotate(-8deg);
}
.tech-card {
  position: absolute;
  background: rgba(255,255,255,0.95);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  box-shadow: var(--shadow);
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600; color: var(--text);
  z-index: 3;
}
.tech-card svg { width: 22px; height: 22px; color: var(--cta); }
.tech-card.adas { top: 10%; left: 0; animation: float 6s ease-in-out infinite; }
.tech-card.dms { top: 40%; right: -10px; animation: float 7s ease-in-out infinite 1s; }
.tech-card.gps { bottom: 18%; left: 5%; animation: float 5s ease-in-out infinite 2s; }
.tech-card.cloud { bottom: 8%; right: 5%; animation: float 6.5s ease-in-out infinite 0.5s; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Hero video background */
.hero-video {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  padding: 70px 0 80px;
  background: #0B1220;
  overflow: hidden;
}
.hero-video-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-video-wrap video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(11,18,32,0.88) 0%, rgba(11,18,32,0.65) 55%, rgba(11,18,32,0.35) 100%);
  z-index: 1;
}
.hero-video .hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
}
.hero-video .hero-grid {
  grid-template-columns: 1.5fr 0.5fr;
  align-items: center;
  min-height: 400px;
}
.hero-video .hero-tag {
  background: rgba(14,165,233,0.2);
  color: #7DD3FC;
  border: 1px solid rgba(14,165,233,0.3);
}
.hero-video h1 {
  color: #fff;
  font-size: clamp(26px, 3.4vw, 44px);
  line-height: 1.2;
}
.hero-video h1 span { color: var(--accent-light); }
.hero-video p.lead {
  color: rgba(255,255,255,0.82);
  max-width: 620px;
  font-size: 17px;
}
.hero-device-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.hero-device {
  max-height: 380px;
  width: auto;
  filter: drop-shadow(0 30px 50px rgba(0,0,0,0.5));
  animation: float 6s ease-in-out infinite;
}

.trust-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  margin-top: 64px; background: #fff; border: 1px solid var(--border);
  border-radius: 16px; padding: 22px; box-shadow: var(--shadow);
}
.trust-item { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-muted); }
.trust-item svg { width: 22px; height: 22px; color: var(--cta); flex-shrink: 0; }

/* Sections */
.section { padding: 56px 0; }
.section-title {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 800; color: var(--primary); text-align: center; margin-bottom: 12px;
}
.section-subtitle {
  font-size: 17px; color: var(--text-muted); text-align: center; max-width: 640px; margin: 0 auto 36px;
}
.bg-soft { background: var(--bg-soft); }
.bg-blue { background: var(--bg-blue); }

/* Data strip */
.data-strip {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px;
  background: #fff; border: 1px solid var(--border); border-radius: 16px;
  padding: 32px; box-shadow: var(--shadow);
}
.data-strip-three { grid-template-columns: repeat(3, 1fr); }
.data-item { text-align: center; }
.data-item .num { font-size: 64px; font-weight: 800; color: var(--cta); display: block; line-height: 1; }
.data-item .label { font-size: 15px; color: var(--text-muted); margin-top: 10px; font-weight: 500; }

/* Product cards */
.product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
a.product-card { color: inherit; text-decoration: none; }
a.product-card:hover { color: inherit; }
.product-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform .2s, box-shadow .2s, border-color .2s;
  display: flex; flex-direction: column; cursor: pointer;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
.product-card .img-wrap {
  height: 180px; background: #fff; display: flex; align-items: center; justify-content: center;
  padding: 16px; position: relative;
}
.product-card .img-wrap img {
  width: 100%; height: 100%; object-fit: contain;
}
.product-card .badge {
  position: absolute; top: 14px; right: 14px;
  background: var(--accent-light); color: var(--cta);
  font-size: 11px; font-weight: 700; padding: 4px 10px; border-radius: 999px;
}
.product-card .content { padding: 18px 22px 20px; flex: 1; display: flex; flex-direction: column; }
.product-card h3 { font-size: 20px; color: var(--primary); margin-bottom: 6px; }
.product-card .tagline { font-size: 14px; color: var(--text-muted); margin-bottom: 14px; flex: 1; }
.product-card .btn { width: 100%; }
.product-card .card-cta {
  margin-top: auto; color: var(--cta); font-weight: 600; font-size: 14px;
  display: inline-flex; align-items: center; gap: 4px;
}

.cat-empty { display: none !important; }

/* Why us */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.why-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: box-shadow .2s;
}
.why-card:hover { box-shadow: var(--shadow); }
.why-card .icon {
  width: 48px; height: 48px; border-radius: 12px; background: var(--accent-light);
  color: var(--cta); display: flex; align-items: center; justify-content: center; margin-bottom: 16px;
}
.why-card h4 { font-size: 18px; margin-bottom: 8px; color: var(--primary); }
.why-card p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* Safety */
.safety-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.safety-item { display: flex; gap: 16px; margin-bottom: 24px; }
.safety-item .icon {
  width: 48px; height: 48px; border-radius: 50%; background: var(--accent-light);
  color: var(--cta); display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.safety-item h4 { font-size: 18px; color: var(--primary); margin-bottom: 4px; }
.safety-item p { font-size: 14px; color: var(--text-muted); }
.safety-visual {
  background: linear-gradient(135deg, #0B2A4A 0%, #1E3A5F 100%);
  border-radius: 20px; min-height: 380px;
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  padding: 18px;
  box-shadow: 0 12px 40px rgba(11,42,74,0.18);
}
.scenario-stack { display: flex; flex-direction: column; gap: 12px; width: 100%; }
.scenario-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(14,165,233,0.32);
  border-radius: 12px;
  padding: 12px 14px;
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 14px;
  align-items: center;
  transition: transform .3s, border-color .3s, background .3s;
  cursor: default;
}
.scenario-card:hover {
  border-color: var(--accent);
  background: rgba(14,165,233,0.12);
  transform: translateX(4px);
}
.scenario-card .scenario-icon {
  width: 84px; height: 64px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(14,165,233,0.18), rgba(14,165,233,0.04));
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  position: relative;
}
.scenario-card .scenario-icon svg { width: 100%; height: 100%; }
.scenario-card .scenario-body h5 {
  color: #fff; font-size: 14px; margin-bottom: 4px; letter-spacing: 0.4px;
  display: flex; align-items: center; gap: 6px;
}
.scenario-card .scenario-body h5::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}
.scenario-card .scenario-body p {
  color: rgba(224,242,254,0.78);
  font-size: 12px;
  line-height: 1.5;
}
.scan-line {
  position: absolute; left: 14px; right: 14px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  animation: scan 3s linear infinite;
  border-radius: 2px;
}
@keyframes scan { 0% { top: 6%; } 100% { top: 94%; } }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.3; } }
@keyframes pulse-ring { 0% { r: 12; opacity: 0.9; } 100% { r: 28; opacity: 0; } }
.detection-box { animation: blink 1.6s infinite; }

/* Industries */
.industry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.industry-card {
  position: relative; border-radius: var(--radius); overflow: hidden; min-height: 280px;
  background: var(--bg-soft); display: flex; flex-direction: column; justify-content: flex-end;
  padding: 24px; color: #fff;
}
.industry-card .bg {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  transition: transform .4s;
}
.industry-card:hover .bg { transform: scale(1.05); }
.industry-card .overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(11,42,74,0.92) 0%, rgba(11,42,74,0.4) 60%, transparent 100%);
}
.industry-card h4, .industry-card p { position: relative; z-index: 2; }
.industry-card h4 { font-size: 18px; margin-bottom: 6px; }
.industry-card p { font-size: 14px; opacity: 0.9; }

/* CTA Band */
.cta-band {
  background: linear-gradient(90deg, var(--primary) 0%, #0E3A66 100%);
  color: #fff; padding: 60px 0; text-align: center;
}
.cta-band h2 { font-size: 32px; margin-bottom: 12px; }
.cta-band p { font-size: 16px; opacity: 0.9; margin-bottom: 24px; }

/* Solution diagram */
.diagram-wrap { background: #fff; border: 1px solid var(--border); border-radius: 20px; padding: 40px; margin: 40px 0; }
.solution-diagram {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.diagram-node {
  flex: 1; min-width: 140px; text-align: center; background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 14px; padding: 24px 16px; transition: transform .2s;
}
.diagram-node:hover { transform: translateY(-4px); }
.diagram-node .icon {
  width: 56px; height: 56px; border-radius: 14px; background: var(--accent-light); color: var(--cta);
  display: flex; align-items: center; justify-content: center; margin: 0 auto 12px;
}
.diagram-node h4 { font-size: 15px; color: var(--primary); margin-bottom: 4px; }
.diagram-node p { font-size: 12px; color: var(--text-muted); }
.diagram-arrow { color: var(--accent); font-size: 24px; flex-shrink: 0; }
.diagram-caption {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 32px;
}
.diagram-caption p { font-size: 13px; color: var(--text-muted); text-align: center; }

/* Page header */
.page-header {
  background: var(--bg-blue); padding: 70px 0 50px; text-align: center;
}
.page-header h1 { font-size: 40px; color: var(--primary); margin-bottom: 10px; }
.page-header p { color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* Product detail */
.product-detail-top { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; padding: 50px 0; }
.product-detail-top .gallery { background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 24px; display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 400px; gap: 16px; }
.product-detail-top .gallery img.main-img { width: 100%; max-height: 360px; object-fit: contain; }
.product-detail-top .gallery .thumb-row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.product-detail-top .gallery .thumb { width: 64px; height: 52px; object-fit: contain; border-radius: 6px; border: 1px solid var(--border); background: #fff; cursor: pointer; transition: all .15s; }
.product-detail-top .gallery .thumb:hover { border-color: var(--accent); }
.product-detail-top .gallery .thumb.active { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent); }
.product-detail-top .info h1 { font-size: 36px; color: var(--primary); margin-bottom: 8px; }
.product-detail-top .info .tagline { font-size: 17px; color: var(--text-muted); margin-bottom: 16px; }
.product-detail-top .info .detail-overview {
  font-size: 15px; color: var(--text); line-height: 1.75; margin-bottom: 18px;
}
.product-detail-top .info .detail-top-features {
  list-style: none; margin: 0 0 24px; display: grid; gap: 8px;
}
.product-detail-top .info .detail-top-features li {
  font-size: 14px; color: var(--text); display: flex; gap: 10px; line-height: 1.55;
}
.product-detail-top .info .detail-top-features li::before {
  content: '✓'; color: var(--cta); font-weight: 700; flex-shrink: 0;
}
.spec-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.spec-chips span {
  background: var(--bg-blue); color: var(--text); border: 1px solid var(--border);
  border-radius: 999px; padding: 6px 14px; font-size: 13px;
}
.detail-actions { display: flex; gap: 12px; margin-bottom: 24px; }

.back-bar { padding: 18px 24px 0; }
.back-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--text-muted); font-size: 14px; font-weight: 500;
  text-decoration: none; padding: 6px 12px; border-radius: 8px;
  transition: background .2s, color .2s;
}
.back-link:hover { background: var(--bg-soft); color: var(--cta); }

.detail-sections { padding: 40px 0; }
.detail-tabs { display: flex; gap: 8px; border-bottom: 1px solid var(--border); margin-bottom: 32px; flex-wrap: wrap; }
.detail-tab {
  padding: 12px 20px; background: none; border: none; font-weight: 600; color: var(--text-muted); cursor: pointer;
}
.detail-tab.active { color: var(--cta); border-bottom: 2px solid var(--cta); }
.detail-panel { display: none; }
.detail-panel.active { display: block; }

.specs-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 12px;
}
.specs-grid .specs-table { background: var(--bg-soft); border-radius: 10px; overflow: hidden; }
.specs-grid .specs-table th, .specs-grid .specs-table td { padding: 12px 14px; }
.specs-grid .specs-table th { background: transparent; color: var(--primary); border-bottom: 1px solid var(--border); }
.compare-scroll {
  max-height: 560px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  background: #fff;
}
.compare-scroll::-webkit-scrollbar { width: 10px; height: 10px; }
.compare-scroll::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 5px; }
.compare-scroll::-webkit-scrollbar-thumb:hover { background: #94a3b8; }
.compare-scroll::-webkit-scrollbar-track { background: var(--bg-soft); border-radius: 5px; }
.compare-table { table-layout: fixed; width: 100%; min-width: 900px; }
.compare-table col.compare-col-model, .compare-table :is(th, td):first-child { width: 170px; }
.compare-table th, .compare-table td { font-size: 13px; padding: 12px; text-align: center; word-break: break-word; }
.compare-table :is(th, td):first-child { text-align: left; }
.compare-table thead th { background: var(--primary); color: #fff; position: sticky; top: 0; z-index: 2; }
.compare-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.compare-export {
  white-space: nowrap;
  flex: 0 0 auto;
}
.compare-table thead th:first-child { left: 0; z-index: 3; }
.compare-table tbody :is(th, td):first-child { position: sticky; left: 0; background: #fff; z-index: 1; box-shadow: 2px 0 0 -1px var(--border); }
.compare-table tbody tr:nth-child(odd) :is(th, td):first-child { background: var(--bg-soft); }
.compare-table tbody tr td[colspan] { position: static !important; box-shadow: none; }
.compare-table tbody tr:nth-child(odd) { background: var(--bg-soft); }
.compare-table thead th a { color: #fff; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.compare-table .compare-thumb { width: 48px; height: 48px; object-fit: contain; border-radius: 6px; background: rgba(255,255,255,.12); padding: 4px; }
.compare-table .compare-badge { font-size: 11px; color: #7dd3fc; font-weight: 500; }
.compare-table tbody td.best { color: var(--cta); font-weight: 700; }
.compare-table tbody td.best::before { content: '★'; margin-right: 4px; font-size: 10px; }

.specs-table { width: 100%; border-collapse: collapse; }
.specs-table th, .specs-table td { padding: 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
.specs-table th { background: var(--bg-soft); color: var(--text-muted); font-weight: 600; }

.feature-list li { display: flex; gap: 12px; margin-bottom: 14px; color: var(--text); }
.feature-list li::before { content: '✓'; color: var(--cta); font-weight: 700; }

.ordering-table { width: 100%; border-collapse: collapse; }
.ordering-table th, .ordering-table td { padding: 12px; border: 1px solid var(--border); font-size: 14px; }
.ordering-table th { background: var(--bg-soft); }

.resource-list { display: grid; gap: 12px; }
.resource-row {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: 10px; padding: 14px 18px;
}

.faq-item { border-bottom: 1px solid var(--border); }
.faq-question {
  width: 100%; text-align: left; padding: 18px 0; background: none; border: none;
  font-size: 16px; font-weight: 600; color: var(--primary); cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-answer { display: none; padding-bottom: 18px; color: var(--text-muted); font-size: 15px; line-height: 1.7; }
.faq-answer p { margin: 0; }
.faq-item.open .faq-answer { display: block; }

.install-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; margin-top: 16px;
}
.install-thumb {
  display: block; border-radius: 10px; overflow: hidden; border: 1px solid var(--border);
  background: #fff; aspect-ratio: 4/3;
}
.install-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.install-thumb:hover img { transform: scale(1.05); }

.acc-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; margin-top: 16px;
}
.acc-card {
  background: #fff; border: 1px solid var(--border); border-radius: 10px; overflow: hidden;
  display: flex; flex-direction: column;
}
.acc-img { width: 100%; height: 160px; object-fit: contain; background: #fff; }
.acc-body { padding: 14px 16px; }
.acc-body strong { color: var(--primary); font-size: 15px; display: block; margin-bottom: 4px; }
.acc-body p { font-size: 13px; color: var(--text-muted); margin-bottom: 8px; line-height: 1.5; }
.acc-spec { font-size: 12px; color: var(--cta); font-weight: 600; }

/* Solutions tabs */
.solution-tabs { display: flex; gap: 10px; justify-content: center; margin-bottom: 40px; flex-wrap: wrap; }
.solution-tab {
  padding: 10px 20px; border-radius: 999px; border: 1px solid var(--border);
  background: #fff; color: var(--text); font-weight: 500; cursor: pointer;
}
.solution-tab.active { background: var(--cta); color: #fff; border-color: var(--cta); }
.solution-panel { display: none; }
.solution-panel.active { display: block; }
.solution-content { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
.solution-content h3 { font-size: 24px; color: var(--primary); margin-bottom: 12px; }
.solution-content ul li { margin-bottom: 8px; color: var(--text); font-size: 14px; }
.solution-panel:nth-child(even) .solution-content > div:first-child { order: 2; }
.solution-panel:nth-child(even) .solution-content > div:last-child { order: 1; }

.diagram-wrap {
  background: var(--bg-soft); border-radius: 16px; padding: 36px 28px; margin-top: 12px;
}
.solution-diagram {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.diagram-node {
  flex: 1 1 0; min-width: 160px; background: #fff; border: 1px solid var(--border);
  border-radius: 12px; padding: 18px 14px; text-align: center;
}
.diagram-node .icon {
  width: 44px; height: 44px; margin: 0 auto 10px; border-radius: 10px;
  background: var(--accent-light); color: var(--cta);
  display: flex; align-items: center; justify-content: center;
}
.diagram-node h4 { font-size: 14px; color: var(--primary); margin-bottom: 4px; }
.diagram-node p { font-size: 12px; color: var(--text-muted); margin: 0; }
.diagram-arrow {
  color: var(--cta); font-size: 24px; font-weight: 700;
}
.diagram-caption {
  display: flex; gap: 24px; justify-content: center; flex-wrap: wrap;
  margin-top: 20px; padding-top: 20px; border-top: 1px dashed var(--border);
}
.diagram-caption p {
  font-size: 13px; color: var(--text-muted); margin: 0;
  display: inline-flex; align-items: center; gap: 6px;
}
.diagram-caption p::before { content: '●'; color: var(--cta); }

/* Platform & App showcase */
.platform-section { background: linear-gradient(180deg, var(--bg-soft) 0%, #eef4ff 100%); }
.platform-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: stretch; }
.platform-card {
  background: #fff; border-radius: 20px; overflow: hidden;
  box-shadow: 0 4px 20px rgba(15,23,42,.06);
  display: flex; flex-direction: column;
}
/* 固定高度展示区：图片 contain 居中，背景与宣传图渐变一致，两卡等高对齐 */
.platform-visual {
  height: 360px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(180deg, #051426, #0d3e69);
}
.platform-card:last-child .platform-visual { background: linear-gradient(180deg, #05162a, #0a345c); }
.platform-visual img { width: 100%; height: 100%; object-fit: contain; display: block; }
.platform-body { padding: 22px 24px 24px; flex: 1; }
.platform-body h3 { font-size: 19px; color: var(--primary); margin-bottom: 8px; }
.platform-body p { color: var(--text-muted); font-size: 14px; margin-bottom: 14px; line-height: 1.55; }
.platform-body ul { list-style: none; display: grid; gap: 7px; }
.platform-body li { font-size: 13px; color: var(--text); display: flex; gap: 8px; align-items: flex-start; line-height: 1.5; }
.platform-body li::before { content: '✓'; color: var(--cta); font-weight: 700; flex-shrink: 0; }
@media (max-width: 900px) {
  .platform-grid { grid-template-columns: 1fr; }
  .platform-visual { height: 300px; }
}

/* ===== 全站图片灯箱（放大预览）===== */
.product-detail-top .gallery .main-img,
.install-thumb img,
.acc-card .acc-img { cursor: zoom-in; }

.site-lightbox {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(8, 15, 30, .94);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity .2s;
}
.site-lightbox.show { opacity: 1; }
.site-lightbox img {
  max-width: 92vw; max-height: 86vh;
  object-fit: contain; background: #fff;
  border-radius: 10px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, .55);
}
.site-lightbox .lb-count {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  color: rgba(255, 255, 255, .85); font-size: 13px; letter-spacing: 1px;
}
.site-lightbox .lb-close {
  position: absolute; top: 20px; right: 28px;
  width: 42px; height: 42px; border: none; border-radius: 50%;
  background: rgba(255, 255, 255, .14); color: #fff;
  font-size: 26px; line-height: 1; cursor: pointer; transition: background .15s;
}
.site-lightbox .lb-close:hover { background: rgba(255, 255, 255, .3); }
.site-lightbox .lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; border: none; border-radius: 50%;
  background: rgba(255, 255, 255, .14); color: #fff;
  font-size: 32px; line-height: 1; cursor: pointer; transition: background .15s;
}
.site-lightbox .lb-nav:hover { background: rgba(255, 255, 255, .3); }
.site-lightbox .lb-prev { left: 24px; }
.site-lightbox .lb-next { right: 24px; }

/* Support */
.support-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 50px; }
a.support-card { color: inherit; text-decoration: none; }
a.support-card:hover { color: inherit; }
.support-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px;
  text-align: center; transition: box-shadow .2s, transform .2s, border-color .2s;
  display: flex; flex-direction: column; align-items: center;
}
.support-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: var(--accent); }
.support-card .icon { width: 48px; height: 48px; margin: 0 auto 14px; color: var(--cta); }
.support-card h4 { font-size: 17px; margin-bottom: 6px; color: var(--primary); }
.support-card p { font-size: 13px; color: var(--text-muted); margin-bottom: 14px; }
.support-card .card-link {
  margin-top: auto; color: var(--cta); font-weight: 600; font-size: 13px;
  display: inline-flex; align-items: center; gap: 4px;
}

/* About */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
/* About hero band (factory background + logo) */
.about-hero-band {
  position: relative;
  background: #071a30;
  overflow: hidden;
  padding: 84px 0;
}
.about-hero-band::before {
  content: '';
  position: absolute; inset: 0;
  background: url('/assets/about-factory-bg.jpg') center/cover no-repeat;
  opacity: .55;
}
.about-hero-band::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(5,20,38,.95) 0%, rgba(7,26,48,.85) 45%, rgba(7,26,48,.5) 100%);
}
.about-hero-inner {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center;
}
.about-hero-text .about-hero-logo {
  width: 220px; display: block; margin-bottom: 18px;
  filter: brightness(0) invert(1);
}
.about-hero-badge {
  display: inline-block; padding: 7px 16px; border-radius: 999px;
  background: rgba(2, 132, 199, .35); border: 1px solid rgba(125, 211, 252, .55);
  color: #bae6fd; font-size: 12px; font-weight: 700; letter-spacing: 2.5px;
}
.about-hero-text h2 {
  color: #fff; font-size: 34px; line-height: 1.25; margin: 18px 0 16px;
}
.about-hero-text .lead { color: rgba(203, 222, 240, .92); font-size: 15px; line-height: 1.85; }
.about-hero-band .about-stats { display: grid; grid-template-columns: 1fr; gap: 18px; margin: 0; }
.about-hero-band .stat-card {
  background: rgba(255, 255, 255, .09);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 14px; padding: 24px; text-align: left;
  display: flex; align-items: baseline; gap: 16px;
  transition: transform .2s, background .2s;
}
.about-hero-band .stat-card:hover { transform: translateY(-3px); background: rgba(255, 255, 255, .14); }
.about-hero-band .stat-card .num { color: #5eead4; font-size: 38px; }
.about-hero-band .stat-card .label { color: rgba(203, 222, 240, .9); margin-top: 0; font-size: 14px; }
@media (max-width: 900px) {
  .about-hero-inner { grid-template-columns: 1fr; gap: 36px; }
  .about-hero-band { padding: 56px 0; }
  .about-hero-text h2 { font-size: 26px; }
  .about-hero-text .about-hero-logo { width: 170px; }
}
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 40px 0; }
.stat, .stat-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; text-align: center; }
.stat .num, .stat-card .num { font-size: 36px; font-weight: 800; color: var(--cta); display: block; line-height: 1; }
.stat .label, .stat-card .label { font-size: 14px; color: var(--text-muted); margin-top: 10px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; }
.contact-info-item { display: flex; gap: 14px; margin-bottom: 20px; }
.contact-info-item .icon { width: 44px; height: 44px; border-radius: 10px; background: var(--accent-light); color: var(--cta); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.contact-form { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); }
.checkbox { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.checkbox input { width: auto; }

/* Multi-select dropdown (contact page product picker) */
.ms-select { position: relative; }
.ms-toggle {
  width: 100%; padding: 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; background: #fff; cursor: pointer; text-align: left;
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  transition: border-color .15s;
}
.ms-toggle:hover { border-color: var(--accent); }
.ms-select.open .ms-toggle { border-color: var(--accent); }
.ms-toggle .ms-label {
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  color: var(--text-muted);
}
.ms-toggle .ms-label.has-value { color: var(--text); }
.ms-toggle .ms-caret { flex-shrink: 0; color: var(--text-muted); transition: transform .15s; }
.ms-select.open .ms-caret { transform: rotate(180deg); }
.ms-menu {
  display: none; position: absolute; top: calc(100% + 4px); left: 0; right: 0;
  background: #fff; border: 1px solid var(--border); border-radius: 8px;
  box-shadow: var(--shadow); z-index: 60; max-height: 240px; overflow-y: auto; padding: 6px 0;
}
.ms-select.open .ms-menu { display: block; }
.ms-option {
  display: flex; align-items: center; gap: 10px; padding: 9px 14px;
  font-size: 14px; cursor: pointer; margin: 0;
}
.ms-option:hover { background: var(--bg-soft); }
.ms-option input { accent-color: var(--cta); width: 16px; height: 16px; flex-shrink: 0; margin: 0; }
.ms-option span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Footer */
footer {
  background: var(--primary); color: #cbd5e1; padding: 60px 0 0;
}
footer .footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 40px; padding-bottom: 40px; }
footer .logo { color: #fff; margin-bottom: 14px; }
footer p { font-size: 14px; line-height: 1.7; color: #94a3b8; }
footer h5 { color: #fff; font-size: 15px; margin-bottom: 16px; }
footer ul { list-style: none; }
footer ul li { margin-bottom: 10px; }
footer ul li a { color: #94a3b8; font-size: 14px; }
footer ul li a:hover { color: #fff; }
.newsletter { display: flex; gap: 8px; margin-top: 12px; }
.newsletter input { flex: 1; padding: 10px; border-radius: 6px; border: none; font-size: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0;
  display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: #94a3b8;
}

/* Mobile navigation drawer */
.desktop-nav.open {
  display: flex;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(100vh - 70px);
  background: #fff;
  z-index: 999;
  flex-direction: column;
  align-items: stretch;
  padding: 12px 24px 24px;
  gap: 0;
  box-shadow: 0 12px 40px rgba(15,23,42,.12);
  overflow-y: auto;
  animation: slideIn .2s ease;
}
@keyframes slideIn { from { transform: translateX(100%); } to { transform: translateX(0); } }
.desktop-nav.open .nav-link {
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 16px;
}
.desktop-nav.open .submenu-wrap { position: relative; }
.desktop-nav.open .submenu-wrap::after { display: none; }
.desktop-nav.open .submenu {
  display: flex !important;
  position: static;
  flex-direction: column;
  box-shadow: none;
  border: none;
  border-left: 2px solid var(--accent-light);
  border-radius: 0;
  padding: 4px 0 8px 14px;
  margin-bottom: 8px;
  gap: 0;
  min-width: auto;
}
.desktop-nav.open .submenu a { padding: 8px 0; }
.desktop-nav.open .btn { margin-top: 10px; width: 100%; }
body.nav-open { overflow: hidden; }

/* Mobile */
@media (max-width: 900px) {
  nav.desktop-nav { display: none; }
  .mobile-toggle { display: block; }
  .hero-grid, .product-detail-top, .about-intro, .contact-grid, .safety-grid { grid-template-columns: 1fr; }
  .why-grid, .industry-grid, .support-cards { grid-template-columns: repeat(2, 1fr); }
  .data-strip { grid-template-columns: repeat(2, 1fr); }
  .trust-bar { grid-template-columns: repeat(2, 1fr); }
  footer .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-visual { min-height: 300px; }
  .hero-video { min-height: 480px; padding: 50px 0 60px; }
  .hero-video .hero-grid { min-height: auto; }
  .hero-video h1 { font-size: clamp(34px, 6vw, 52px); }
  .page-header { padding: 50px 0 36px; }
  .page-header h1 { font-size: 32px; }
  .specs-grid { grid-template-columns: 1fr 1fr; }
  .about-stats { grid-template-columns: repeat(2, 1fr); }
  .video-grid { grid-template-columns: 1fr; }
  .oem-band { flex-direction: column; align-items: flex-start; }
  .solution-content { grid-template-columns: 1fr; }
  .solution-panel:nth-child(even) .solution-content > div:first-child { order: 1; }
  .solution-panel:nth-child(even) .solution-content > div:last-child { order: 2; }
  .solution-diagram { justify-content: center; }
  .diagram-node { flex: 1 1 140px; min-width: 140px; }
}
@media (max-width: 600px) {
  .container { padding: 0 18px; }
  .why-grid, .industry-grid, .support-cards, .data-strip, .trust-bar, footer .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  footer .footer-grid { gap: 28px; }
  footer .footer-grid > div:first-child { max-width: 100%; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .hero { padding: 48px 0 60px; }
  .hero h1 { font-size: clamp(30px, 9vw, 42px); }
  .hero-visual { min-height: 240px; }
  .tech-card { font-size: 12px; padding: 8px 10px; gap: 6px; }
  .tech-card svg { width: 18px; height: 18px; }
  .trust-bar { padding: 16px; gap: 12px; margin-top: 40px; }
  .trust-item { font-size: 13px; }
  .cta-band { padding: 44px 0; }
  .cta-band h2 { font-size: 24px; }
  .page-header { padding: 40px 0 28px; }
  .page-header h1 { font-size: 26px; }
  .page-header p { font-size: 15px; }
  .solution-tabs { gap: 8px; }
  .solution-tab { padding: 8px 14px; font-size: 13px; }
  .data-item .num { font-size: 42px; }
  .about-stats { grid-template-columns: 1fr; }
  .stat { padding: 22px; }
  .product-detail-top { padding: 24px 0; gap: 24px; }
  .product-detail-top .gallery { min-height: auto; padding: 16px; }
  .product-detail-top .gallery img.main-img { max-height: 220px; }
  .product-detail-top .gallery .thumb { width: 52px; height: 42px; }
  .product-detail-top .info h1 { font-size: 26px; }
  .product-detail-top .info .tagline { font-size: 15px; }
  .detail-actions { flex-direction: column; }
  .detail-actions .btn { width: 100%; }
  .specs-grid { grid-template-columns: 1fr; gap: 16px; }
  .specs-grid .specs-table th, .specs-grid .specs-table td { padding: 10px 12px; font-size: 13px; }
  .detail-tabs { gap: 6px; }
  .detail-tab { padding: 10px 12px; font-size: 13px; }
  .ordering-table { font-size: 13px; min-width: 420px; }
  .ordering-table th, .ordering-table td { padding: 8px 10px; }
  .site-lightbox .lb-prev { left: 8px; }
  .site-lightbox .lb-next { right: 8px; }
  .site-lightbox .lb-nav { width: 40px; height: 40px; font-size: 26px; }
  .site-lightbox .lb-close { top: 10px; right: 12px; width: 38px; height: 38px; }
  .oem-band { padding: 28px; }
  .oem-band h2 { font-size: 22px; }
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  background: linear-gradient(135deg, #ffffff 0%, #E0F2FE 100%);
  border-bottom: 1px solid var(--border);
  padding: 56px 0 40px;
  text-align: center;
}
.page-hero h1 { font-size: 40px; color: var(--primary); margin-bottom: 12px; }
.page-hero p { font-size: 17px; color: var(--text-muted); max-width: 640px; margin: 0 auto; }
.nav-link.active { color: var(--cta); }

/* ---------- Support: resource library ---------- */
.resource-filter { display: flex; justify-content: flex-end; margin-bottom: 16px; }
.resource-filter select {
  padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; background: #fff; color: var(--text);
}
.table-wrap { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow-x: auto; }
.resource-table { width: 100%; border-collapse: collapse; font-size: 14px; min-width: 640px; }
.resource-table th {
  text-align: left; padding: 14px 18px; background: var(--accent-light); color: var(--primary);
  font-size: 13px; text-transform: uppercase; letter-spacing: .4px; border-bottom: 1px solid var(--border);
}
.resource-table td { padding: 14px 18px; border-bottom: 1px solid var(--border); color: var(--text); }
.resource-table tr:last-child td { border-bottom: none; }
.resource-table tr:hover td { background: #f8fafc; }
.res-type {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  background: var(--accent-light); color: var(--cta); font-size: 12px; font-weight: 600;
}
.btn-sm { padding: 7px 14px; font-size: 13px; }

/* ---------- About page extras ---------- */
.about-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 40px 0; }
.stat { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; text-align: center; }
.stat .num { display: block; font-size: 32px; font-weight: 800; color: var(--cta); margin-bottom: 6px; }
.stat span:last-child { font-size: 13px; color: var(--text-muted); }
.cert-badges { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 30px; }
.cert-badge {
  padding: 12px 26px; border: 1px solid var(--accent); color: var(--cta);
  border-radius: 8px; font-weight: 700; font-size: 15px; background: #fff;
}
.oem-band {
  display: flex; justify-content: space-between; align-items: center; gap: 30px;
  background: #fff; border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow);
  flex-wrap: wrap;
}

/* ---------- Videos gallery (about / home) ---------- */
.video-tabs { display: flex; gap: 10px; justify-content: center; margin: 8px 0 32px; flex-wrap: wrap; }
.video-tab {
  padding: 9px 22px; border-radius: 24px; border: 1px solid var(--border); background: #fff;
  color: var(--text); font-size: 14px; font-weight: 600; cursor: pointer;
  transition: all .2s ease;
}
.video-tab:hover { border-color: var(--accent); color: var(--cta); }
.video-tab.active { background: var(--cta); color: #fff; border-color: var(--cta); }
.video-grid {
  display: grid; gap: 24px;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}
.video-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow-sm); transition: all .25s ease;
  display: flex; flex-direction: column;
}
.video-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.video-card .player { position: relative; background: #0B1220; aspect-ratio: 16/9; overflow: hidden; }
.video-card video {
  width: 100%; height: 100%; object-fit: cover; display: block; background: #000;
}
.video-card .placeholder {
  width: 100%; height: 100%; display: flex; align-items: center; justify-content: center;
  color: #94a3b8; background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  flex-direction: column; gap: 10px;
}
.video-card .placeholder svg { opacity: .7; }
.video-card .body { padding: 18px 20px 22px; }
.video-card .type {
  display: inline-block; padding: 3px 10px; border-radius: 12px;
  background: var(--accent-light); color: var(--cta); font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .5px;
}
.video-card h4 { font-size: 16px; color: var(--primary); margin: 10px 0 6px; line-height: 1.4; }
.video-card .meta { font-size: 12px; color: var(--text-muted); }
.video-empty {
  text-align: center; padding: 60px 20px; color: var(--text-muted);
  background: #fff; border: 1px dashed var(--border); border-radius: var(--radius);
}
.video-empty svg { margin-bottom: 12px; opacity: .4; }
.video-empty p { font-size: 14px; }
.video-empty .hint { font-size: 13px; margin-top: 6px; }
.oem-band h2 { font-size: 28px; color: var(--primary); margin-bottom: 10px; }
.oem-band p { color: var(--text-muted); max-width: 560px; }

/* ---------- Contact page ---------- */
.contact-info h3, .contact-form-card h3 { font-size: 22px; color: var(--primary); margin-bottom: 24px; }
.contact-line { display: flex; gap: 14px; margin-bottom: 20px; align-items: flex-start; }
.contact-line .icon {
  width: 44px; height: 44px; border-radius: 10px; background: var(--accent-light);
  color: var(--cta); display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 20px;
}
.contact-line .label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: var(--text-muted); margin-bottom: 2px; }
.contact-line a { color: var(--text); font-weight: 600; text-decoration: none; }
.contact-line a:hover { color: var(--cta); }
.contact-form-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.product-checks { display: flex; flex-wrap: wrap; gap: 10px; }
.check-item {
  display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px;
  border: 1px solid var(--border); border-radius: 20px; font-size: 13px; cursor: pointer;
}
.check-item input { accent-color: var(--cta); }
.check-item small { color: var(--text-muted); }
.btn-block { width: 100%; }
.form-status { margin-top: 14px; font-size: 14px; display: none; }
.form-status.success { display: block; color: #059669; background: #ECFDF5; padding: 12px; border-radius: 8px; }
.form-status.error { display: block; color: #DC2626; background: #FEF2F2; padding: 12px; border-radius: 8px; }
.contact-qr { margin-top: 30px; padding: 18px; background: var(--accent-light); border-radius: var(--radius); font-size: 14px; color: var(--text); }

/* ---------- Admin ---------- */
.admin-wrap { max-width: 1100px; margin: 30px auto; padding: 0 20px; font-family: 'Inter', sans-serif; }
.admin-login { max-width: 380px; margin: 120px auto; padding: 40px; background: #fff; border: 1px solid #e2e8f0; border-radius: 12px; box-shadow: 0 8px 30px rgba(2,132,199,.08); text-align: center; }
.admin-login img { height: 40px; margin-bottom: 20px; }
.admin-login h1 { font-size: 22px; color: #0B2A4A; margin-bottom: 8px; }
.admin-login p { font-size: 13px; color: #64748b; margin-bottom: 24px; }
.admin-login input {
  width: 100%; padding: 12px; border: 1px solid #e2e8f0; border-radius: 8px; font-size: 14px; margin-bottom: 14px;
}
.admin-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin: 24px 0; }
.admin-tab {
  padding: 10px 20px; border: 1px solid #e2e8f0; background: #fff; border-radius: 8px;
  cursor: pointer; font-size: 14px; font-weight: 600; color: #334155;
}
.admin-tab.active { background: #0284C7; color: #fff; border-color: #0284C7; }
.admin-panel { display: none; }
.admin-panel.active { display: block; }
.admin-card { background: #fff; border: 1px solid #e2e8f0; border-radius: 12px; padding: 24px; margin-bottom: 20px; }
.admin-card h3 { font-size: 17px; color: #0B2A4A; margin-bottom: 16px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.admin-table th { text-align: left; padding: 10px 12px; background: #E0F2FE; color: #0B2A4A; border-bottom: 1px solid #e2e8f0; }
.admin-table td { padding: 10px 12px; border-bottom: 1px solid #e2e8f0; vertical-align: top; }
.admin-table input, .admin-table textarea, .admin-table select {
  width: 100%; padding: 7px 10px; border: 1px solid #e2e8f0; border-radius: 6px; font-size: 13px; font-family: inherit;
}
.admin-btn {
  padding: 9px 18px; background: #0284C7; color: #fff; border: none; border-radius: 8px;
  font-size: 14px; font-weight: 600; cursor: pointer;
}
.admin-btn.secondary { background: #fff; color: #0284C7; border: 1px solid #0284C7; }
.admin-btn.danger { background: #DC2626; }
.admin-btn:disabled { opacity: .5; cursor: not-allowed; }
.admin-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 14px; }
.admin-msg { padding: 10px 14px; border-radius: 8px; font-size: 13px; margin: 10px 0; display: none; }
.admin-msg.ok { display: block; background: #ECFDF5; color: #059669; }
.admin-msg.err { display: block; background: #FEF2F2; color: #DC2626; }
.admin-note { font-size: 12px; color: #64748b; }