:root {
   --blue:       #1a6db5;
   --blue-dark:  #14558e;
   --blue-light: rgba(26,109,181,0.06);
   --heading:    #0D1824;
   --text:       #3B4A5C;
   --text-light: #6B7C93;
   --white:      #ffffff;
   --bg:         #F5F7FA;
   --bg-alt:     #EBEEF3;
   --bg-card:    #FFFFFF;
   --border:     rgba(0,0,0,0.08);
   --border-strong: rgba(0,0,0,0.14);
   --orange:     #e85d04;
   --green:      #0d9488;
   --shadow:     0 1px 3px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04);
   --shadow-md:  0 4px 16px rgba(0,0,0,0.06);
    --accent-dim: rgba(26,109,181,0.12);
    --accent-glow: rgba(26,109,181,0.25);
    --text-primary: #0D1824;
    --text-secondary: #3B4A5C;
    --text-muted: #6B7C93;
  }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(0,0,0,0.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(0,0,0,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}
  
[data-theme="dark"] {
  --bg: #0A1628; --bg-alt: #0E1C30; --bg-card: #1A2332;
  --border: rgba(255,255,255,0.06); --border-light: rgba(255,255,255,0.08);
  --heading: #E8ECF1; --text: #A8B4C4; --text-light: #6B7F96;
  --white: #1A2332; --blue: #3a8fd4; --blue-dark: #2a6fa4;
  --blue-light: rgba(58,143,212,0.1); --shadow: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --orange: #f48120; --green: #22c55e;
}
[data-theme="dark"] .header { background: rgba(10,22,40,0.95); }
[data-theme="dark"] .logo-text { color: #E8ECF1; }
[data-theme="dark"] .nav a { color: #A8B4C4; }
[data-theme="dark"] .cat-hero h1 { color: #E8ECF1; }
[data-theme="dark"] .cat-hero p { color: rgba(255,255,255,0.7); }
[data-theme="dark"] .category-divider h2 { color: #E8ECF1; }
[data-theme="dark"] .spec-table td { color: #A8B4C4; }
[data-theme="dark"] .perf-table td { color: #A8B4C4; }
[data-theme="dark"] .perf-table th { color: #6B7F96; }
[data-theme="dark"] .product-desc { color: #A8B4C4; }
[data-theme="dark"] .compliance-badge { background: rgba(58,143,212,0.12); color: #3a8fd4; }
[data-theme="dark"] .tag { background: rgba(255,255,255,0.05); color: #6B7F96; }
[data-theme="dark"] .highlight-strip { background: #0E1C30; }
[data-theme="dark"] .cta-card { background: #1A2332; }
[data-theme="dark"] input, [data-theme="dark"] textarea, [data-theme="dark"] select { background: #0E1C30; color: #E8ECF1; }
[data-theme="dark"] body::before {
  background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
}

/* NAV (shared with main site) */
#nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--nav-bg, rgba(245,247,250,0.94));backdrop-filter:blur(16px) saturate(1.6);-webkit-backdrop-filter:blur(16px) saturate(1.6);border-bottom:1px solid var(--border);transition:background 0.3s ease}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 40px;max-width:1280px;margin:0 auto}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.1rem;letter-spacing:-0.01em;color:var(--logo-color, #0D1824);text-decoration:none}
.nav-logo-mark{width:32px;height:32px;background:var(--blue);border-radius:3px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.nav-logo-mark svg{width:18px;height:18px;fill:white}
.nav-logo-sub{font-size:0.6rem;letter-spacing:0.12em;color:var(--text-light);font-weight:500;margin-top:-2px;text-transform:uppercase}
.nav-links{display:flex;align-items:center;gap:32px;list-style:none}
.nav-links a{font-size:0.875rem;font-weight:500;color:var(--text);transition:all 0.22s ease;position:relative;text-decoration:none}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;right:0;height:1.5px;background:var(--blue);transform:scaleX(0);transition:transform 0.2s ease;transform-origin:left}
.nav-links a:hover{color:var(--heading)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--blue);font-weight:600}
/* Mobile nav */
.nav-hamburger{display:none;background:none;border:none;cursor:pointer;padding:4px;color:var(--heading)}
.nav-hamburger svg{width:24px;height:24px}
@media(max-width:768px){
  .nav-hamburger{display:flex}
  .nav-links{display:none;position:fixed;top:64px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:16px 40px;border-bottom:1px solid var(--border);z-index:999;box-shadow:0 4px 12px rgba(0,0,0,.08)}
  [data-theme="dark"] .nav-links{background:var(--bg-card,#1a2332)}
  .nav-links.open{display:flex}
  .nav-links li{padding:12px 0;border-bottom:1px solid var(--border)}
  .nav-links li:last-child{border-bottom:none}
}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-login-btn{white-space:nowrap}
.theme-toggle{width:36px;height:36px;border-radius:4px;border:1.5px solid var(--border);background:transparent;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all 0.22s ease;color:var(--text);font-size:0.875rem}
.theme-toggle:hover{border-color:var(--blue);color:var(--blue)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:4px;font-weight:600;font-size:0.875rem;letter-spacing:0.01em;cursor:pointer;transition:all 0.22s ease;border:none;font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei','Noto Sans CJK SC',sans-serif;text-decoration:none}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-dark);transform:translateY(-1px)}
.btn-sm{padding:8px 16px;font-size:0.8rem}
@media (max-width:768px){.nav-links{display:none}.nav-inner{padding:0 20px}}



body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei','Noto Sans CJK SC',sans-serif;
    font-weight: 400;
    line-height: 1.6;
    font-size: 16px;
  }

  /* ── CATALOGUE HERO ── */
  .cat-hero {
    position: relative; min-height: 480px; overflow: hidden;
    display: flex; align-items: flex-end;
    padding-top: 64px;
  }
  .cat-hero img, .cat-hero .cat-hero-media {
    position: absolute; inset: 0; width: 100%; height: 100%;
    object-fit: cover; object-position: center 40%;
    filter: brightness(.6);
  }
  /* slow cinematic drift on the video header */
  .cat-hero .cat-hero-media {
    transform: scale(1.04);
    animation: catHeroDrift 28s ease-in-out infinite alternate;
    will-change: transform;
  }
  @keyframes catHeroDrift {
    from { transform: scale(1.04) translate3d(0,0,0); }
    to   { transform: scale(1.12) translate3d(-1.5%, -1%, 0); }
  }
  @media (prefers-reduced-motion: reduce) {
    .cat-hero .cat-hero-media { animation: none; transform: none; }
  }
  .cat-hero-gradient {
    position: absolute; inset: 0;
    background:
      linear-gradient(to top, var(--bg) 0%, transparent 58%),
      linear-gradient(105deg, rgba(10,22,40,0.55) 0%, transparent 55%);
  }
  /* faint scanline/grid texture over the video, on-brand with the blueprint motif */
  .cat-hero::after {
    content:''; position:absolute; inset:0; z-index:1; pointer-events:none;
    background-image: linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 40px 40px; mix-blend-mode: overlay; opacity:.5;
  }
  .cat-hero-content {
    position: relative; z-index: 2;
    padding: 0 60px 52px;
    max-width: 900px;
  }
  .cat-hero-eyebrow {
    font-size: 11px; font-weight: 600; letter-spacing: .2em;
    text-transform: uppercase; color: var(--blue);
    margin-bottom: 12px;
  }
  .cat-hero h1 {
    font-size: clamp(48px, 6vw, 80px);
    font-weight: 900; line-height: .95;
    text-transform: uppercase;
    color: var(--heading);
    margin-bottom: 16px;
    letter-spacing: -1px;
  }
  .cat-hero h1 em {
    font-style: normal;
    background: linear-gradient(135deg, #7cc4f0, #a8d8f5);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  .cat-hero p {
    font-size: 16px; color: var(--text); max-width: 560px; line-height: 1.6;
  }

  /* ── SECTION WRAPPERS ── */
  .cat-section {
    padding: 80px 60px;
    max-width: 1280px;
    margin: 0 auto;
  }
  .cat-section-full { max-width: 100%; }

  /* ── DIVIDERS ── */
  .category-divider {
    position: relative;
    padding: 60px 60px 48px;
    overflow: hidden;
  }
  .category-divider::before {
    content: '';
    position: absolute; inset: 0;
    background: var(--bg);
  }
  .category-divider-img {
    position: absolute; inset: 0; width: 100%; height: 100%;
    object-fit: cover; object-position: center;
    filter: brightness(.85) saturate(.8);
  }
  .category-divider-content {
    position: relative; z-index: 2;
    max-width: 1280px; margin: 0 auto;
    display: flex; align-items: center; gap: 24px;
  }
  .category-divider-num {
    font-size: 96px; font-weight: 900; line-height: 1;
    color: var(--blue); opacity: .20;
    flex-shrink: 0;
  }
  .category-divider h2 {
    font-size: clamp(36px, 4vw, 60px);
    font-weight: 900; text-transform: uppercase;
    line-height: 1; letter-spacing: -0.5px;
    color: var(--heading);
  }
  .category-divider h2 span {
    display: block;
    font-size: 13px; font-weight: 500; text-transform: uppercase;
    letter-spacing: .18em; color: var(--blue);
    margin-bottom: 6px;
  }
  .divider-line {
    width: 100%; height: 1px;
    background: linear-gradient(90deg, var(--blue) 0%, transparent 60%);
    margin: 0 60px;
  }

  /* ── SECTION HEADING ── */
  .section-label {
    font-size: 10px; font-weight: 600; letter-spacing: .22em;
    text-transform: uppercase; color: var(--blue);
    margin-bottom: 8px;
  }
  .section-title {
    font-size: clamp(28px, 3vw, 44px);
    font-weight: 800; text-transform: uppercase;
    line-height: 1.05; color: var(--heading);
    margin-bottom: 48px;
    letter-spacing: -0.5px;
  }

  /* ── PRODUCT CARD ── */
  .product-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    margin-bottom: 40px;
    position: relative;
    box-shadow: var(--shadow-sm);
    content-visibility: auto;
    contain-intrinsic-size: auto 500px;
  }
  .product-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
  .product-card.reverse { direction: rtl; }
  .product-card.reverse > * { direction: ltr; }

  .product-card-img {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--bg-alt);
  }
  .product-card-img img {
    width: 100%; height: 100%;
    object-fit: cover; object-position: center;
    transition: transform .6s ease;
  }
  .product-card:hover .product-card-img img { transform: scale(1.04); }
  .product-card-img-overlay {
    position: absolute; bottom: 0; left: 0; right: 0; height: 80px;
    background: linear-gradient(to top, rgba(255,255,255,.15) 0%, transparent 100%);
  }

  /* Inset secondary images strip */
  .product-img-strip {
    display: flex;
    gap: 0;
    height: 90px;
    border-top: 1px solid var(--border);
    overflow: hidden;
  }
  .product-img-strip img {
    flex: 1;
    width: 0;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.4s ease;
    border-right: 1px solid var(--border);
  }
  .product-img-strip img:last-child { border-right: none; }
  .product-img-strip img:hover { transform: scale(1.06); }

  .product-card-body {
    padding: 44px 48px;
    display: flex; flex-direction: column; justify-content: space-between;
  }

  .product-badge {
    display: inline-flex; align-items: center; gap: 8px;
    font-size: 10px; font-weight: 700; letter-spacing: .18em;
    text-transform: uppercase; color: var(--blue);
    border: 1px solid var(--blue-light);
    background: var(--blue-light);
    padding: 5px 12px; border-radius: 6px;
    margin-bottom: 20px;
    width: fit-content;
  }

  .product-name {
    font-size: clamp(28px, 3vw, 42px);
    font-weight: 900; text-transform: uppercase;
    line-height: 1; color: var(--heading);
    margin-bottom: 6px;
    letter-spacing: -0.5px;
  }
  .product-name sup {
    font-size: .45em; vertical-align: super; font-weight: 400;
  }
  .product-subtitle {
    font-size: 13px; font-weight: 500; letter-spacing: .06em;
    text-transform: uppercase; color: var(--text-light);
    margin-bottom: 20px;
  }
  .product-desc {
    font-size: 14px; color: var(--text); line-height: 1.65;
    margin-bottom: 24px;
  }

  /* ── SPEC TABLE ── */
  .spec-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    font-size: 13px;
  }
  .spec-table tr { border-bottom: 1px solid var(--border); }
  .spec-table tr:last-child { border-bottom: none; }
  .spec-table td {
    padding: 7px 0;
    color: var(--text-light);
    vertical-align: top;
  }
  .spec-table td:first-child {
    width: 46%; color: var(--blue-dark); font-size: 12px;
    text-transform: uppercase; letter-spacing: .05em; font-weight: 600;
    padding-right: 12px;
  }
  .spec-table td:last-child { color: var(--heading); font-weight: 500; }

  /* ── TAGS ── */
  .tag-row {
    display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px;
  }
  .tag {
    font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em;
    padding: 4px 10px;
    background: var(--blue-light);
    border: 1px solid rgba(26,109,181,.15);
    border-radius: 6px;
    color: var(--blue-dark);
  }

  /* ── COMPLIANCE ROW ── */
  .compliance-row {
    display: flex; align-items: center; gap: 8px;
    margin-top: 18px; padding-top: 16px;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
  }
  .compliance-label {
    font-size: 10px; text-transform: uppercase; letter-spacing: .15em;
    color: var(--text-light); margin-right: 4px; font-weight: 500;
  }
  .compliance-badge {
    font-size: 11px; font-weight: 700;
    padding: 3px 9px;
    background: var(--blue-light);
    border: 1px solid rgba(26,109,181,.2);
    border-radius: 6px;
    color: var(--blue-dark);
  }

  /* ── FULL-WIDTH SPEC TABLE ── */
  .data-table-wrap {
    overflow-x: auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    margin: 32px 0 48px;
    box-shadow: var(--shadow);
  }
  .data-table-header {
    padding: 18px 28px 14px;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 8px;
  }
  .data-table-header h4 {
    font-size: 14px; font-weight: 700;
    text-transform: uppercase; letter-spacing: .12em;
    color: var(--blue-dark);
  }
  .data-table-header p {
    font-size: 12px; color: var(--text-light);
  }
  table.perf-table {
    width: 100%; min-width: 720px;
    border-collapse: collapse;
    font-size: 12.5px;
  }
  table.perf-table thead tr {
    background: var(--blue-light);
  }
  table.perf-table th {
    padding: 10px 14px;
    font-size: 11px; font-weight: 700;
    text-transform: uppercase; letter-spacing: .1em;
    color: var(--blue-dark); text-align: right;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
  }
  table.perf-table th:first-child,
  table.perf-table th:nth-child(2) { text-align: left; }
  table.perf-table td {
    padding: 8px 14px;
    color: var(--text); text-align: right;
    border-bottom: 1px solid var(--border);
  }
  table.perf-table td:first-child,
  table.perf-table td:nth-child(2) { text-align: left; color: var(--text-light); }
  table.perf-table tbody tr:hover { background: var(--bg-alt); }
  table.perf-table tfoot td {
    font-size: 11px; color: var(--text-light);
    padding: 10px 14px; text-align: left;
    border-top: 1px solid var(--border); border-bottom: none;
  }

  /* ── TWO-COLUMN PRODUCTS ── */
  .product-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 40px;
  }
  .product-mini {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
  }
  .product-mini:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
  .product-mini-img {
    height: 220px; overflow: hidden; position: relative;
    background: var(--bg-alt);
  }
  .product-mini-img img {
    width: 100%; height: 100%; object-fit: cover; object-position: center;
    transition: transform .5s ease;
  }
  .product-mini:hover .product-mini-img img { transform: scale(1.05); }
  .product-mini-body { padding: 28px 32px 32px; }
  .product-mini .product-name { font-size: 26px; margin-bottom: 4px; }

  /* Secondary strip for mini cards */
  .product-mini-strip {
    display: flex;
    height: 64px;
    border-top: 1px solid var(--border);
    overflow: hidden;
  }
  .product-mini-strip img {
    flex: 1; width: 0; height: 100%;
    object-fit: cover; object-position: center;
    border-right: 1px solid var(--border);
    transition: transform 0.3s ease;
  }
  .product-mini-strip img:last-child { border-right: none; }
  .product-mini-strip img:hover { transform: scale(1.08); }

  /* ── THREE-COL SMALL ── */
  .product-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 40px;
  }
  .product-micro {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px; padding: 28px 24px;
  }
  .product-micro .product-name { font-size: 22px; margin-bottom: 4px; }
  .product-micro .product-desc { font-size: 13px; }

  /* ── HIGHLIGHT STRIP ── */
  .highlight-strip {
    background: var(--blue);
    padding: 40px 60px;
    display: flex; align-items: center; gap: 60px;
    flex-wrap: wrap;
  }
  .highlight-strip .stat { text-align: center; min-width: 100px; }
  .highlight-strip .stat-num {
    font-size: 48px; font-weight: 900; line-height: 1;
    color: var(--white); letter-spacing: -1px;
  }
  .highlight-strip .stat-label {
    font-size: 12px; font-weight: 500; letter-spacing: .1em;
    text-transform: uppercase; color: rgba(255,255,255,.7);
    margin-top: 4px;
  }
  .highlight-strip .divider { width: 1px; height: 60px; background: rgba(255,255,255,.2); }

  /* ── APPLICATIONS RIBBON ── */
  .app-ribbon {
    display: flex; flex-wrap: wrap; gap: 12px;
    margin-top: 20px;
  }
  .app-chip {
    font-size: 12px; font-weight: 600; letter-spacing: .1em;
    text-transform: uppercase;
    padding: 6px 14px;
    border: 1px solid var(--blue-light);
    background: var(--blue-light);
    border-radius: 6px; color: var(--blue-dark);
  }

  /* ── ORDERING NOTES ── */
  .ordering-section {
    background: var(--bg-alt);
    border-top: 1px solid var(--border);
    padding: 60px;
  }

  /* ── CTA FOOTER ── */
  .cta-footer {
    background: #0a1e33;
    border-top: 1px solid rgba(26,109,181,.25);
    padding: 56px 60px; text-align: center;
  }
  .cta-footer h2 {
    font-size: clamp(28px,4vw,52px); font-weight: 900;
    text-transform: uppercase; color: #ffffff;
    line-height: 1; margin-bottom: 20px; letter-spacing: -0.5px;
  }
  .cta-footer p { color: rgba(255,255,255,0.6); font-size: 14px; max-width: 560px; margin: 0 auto 28px; }
  .cta-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(26,109,181,.2);
    border-radius: 8px; padding: 16px 28px;
    text-align: left; min-width: 200px;
  }
  .cta-label, .cta-card .cta-label {
    font-size: 10px; text-transform: uppercase; letter-spacing: .15em;
    color: rgba(255,255,255,0.5); margin-bottom: 6px; font-weight: 500;
  }
  .cta-card .cta-value {
    color: #ffffff; font-size: 13px; font-weight: 500;
  }

  /* ── RESPONSIVE ── */
  @media (max-width: 900px) {
    .product-card { grid-template-columns: 1fr;content-visibility:visible;contain-intrinsic-size:auto }
    .product-card.reverse { direction: ltr; }
    .product-card-img { aspect-ratio: 4/3; }
    .product-grid-2 { grid-template-columns: 1fr; }
    .product-grid-3 { grid-template-columns: 1fr 1fr; }
    .cat-section { padding: 60px 24px; }
    .cat-hero-content { padding: 0 24px 40px; }
    .category-divider { padding: 44px 24px 36px; }
    .highlight-strip { padding: 32px 24px; gap: 32px; }
    .divider-line { margin: 0 24px; }
    
  }
  @media (max-width: 600px) {
    .product-grid-3 { grid-template-columns: 1fr; }
    .product-card-body { padding: 28px 24px; }
    .container{padding:0 16px}
    *,*::before,*::after{overflow-wrap:break-word;word-break:break-word}
    .category-divider-img{height:180px}
    .product-card{margin-bottom:24px;content-visibility:visible;contain-intrinsic-size:auto}
    .cat-hero{min-height:180px;height:auto}
    .product-name{font-size:clamp(22px,8vw,32px)}
    .product-desc{font-size:13px}
    .spec-table td{font-size:11px;padding:5px 6px}
    .product-img-strip{flex-wrap:wrap}
    .product-img-strip img{flex:1 1 80px;height:60px}
    .product-subtitle{font-size:11px}
    .product-badge{font-size:9px}
    .spec-table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
    .perf-table{font-size:11px}
  }

  /* POWERDAN full card style */
  .product-card-powerdan .product-card-img {
    aspect-ratio: 4/3;
  }