:root {
    --ink: #1c2430;
    --muted: #5a6472;
    --teal: #1a8f8f;
    --teal-dark: #106868;
    --green: #1f9d55;
    --green-dark: #157a41;
    --orange: #d9772f;
    --orange-dark: #a85a1f;
    --grey-tag: #6b7280;
    --blue-link: #1f6fd6;
    --panel-blue: #eef4fb;
    --panel-blue-border: #dbe8f6;
    --panel-green: #eaf7ee;
    --panel-green-border: #d7f0de;
    --border: #e7e9ee;
  }
  
  * { box-sizing: border-box; }
  html { -webkit-text-size-adjust: 100%; }
  
  body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--ink);
    background: #ffffff;
    margin: 0;
    line-height: 1.5;
  }
  
  a { color: inherit; text-decoration: none; }
  img, svg { max-width: 100%; height: auto; display: block; }
  
  .wrap { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
  
  /* ---------- Header / Nav ---------- */
  header {
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 100;
  }
  .navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    max-width: 1100px;
    margin: 0 auto;
  }
  .navbar-brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.05rem; color: var(--ink); }
  .navbar-brand .brand-mark {
    width: 30px; height: 30px; border-radius: 7px;
    background: linear-gradient(135deg, var(--teal), var(--teal-dark));
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 800; font-size: .85rem;
  }
  .nav-toggle { display: none; background: none; border: none; padding: 8px; cursor: pointer; }
  .nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; transition: transform .2s ease, opacity .2s ease; }
  
  .nav-links { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; align-items: center; }
  .nav-links > li { position: relative; }
  .nav-links a.nav-link { font-size: .92rem; font-weight: 500; color: var(--ink); }
  
  .dropdown-menu {
    display: none; position: absolute; top: 100%; left: 0;
    background: #fff; border: 1px solid var(--border); border-radius: 8px;
    min-width: 200px; padding: 8px 0; box-shadow: 0 10px 30px rgba(0,0,0,.08);
    list-style: none; margin: 6px 0 0; z-index: 50;
  }
  .nav-item.dropdown:hover > .dropdown-menu { display: block; }
  .dropdown-menu li a { display: block; padding: 8px 16px; font-size: .85rem; }
  .dropdown-menu li a:hover { background: var(--panel-blue); }
  .dropdown-menu .dropdown { position: relative; }
  .dropdown-menu .dropdown > .dropdown-menu { top: 0; left: 100%; }
  .bg-base-color {
    background: var(--panel-blue); font-weight: 700; font-size: .72rem;
    padding: 6px 16px; text-transform: uppercase; letter-spacing: .4px; color: var(--teal-dark);
  }
  
  /* ---------- Product hero ---------- */
  .eyebrow {
    color: var(--grey-tag);
    font-weight: 700;
    font-size: .72rem;
    letter-spacing: 1.4px;
    text-transform: uppercase;
    margin: 30px 0 6px;
  }
  .product-title { font-size: 1.7rem; font-weight: 700; margin: 0 0 20px; }
  .product-title .tag { color: var(--blue-link); font-size: 1rem; font-weight: 600; margin-left: 6px; }
  .product-title .tag.mv { color: var(--orange); }
  
  .top-section { display: flex; gap: 40px; align-items: flex-start; }
  .top-text { flex: 1.5; min-width: 0; }
  .top-text p { color: var(--muted); font-size: .95rem; line-height: 1.75; margin: 0 0 14px; }
  .top-text p:last-child { margin-bottom: 0; }
  .top-text b { color: var(--ink); }
  
  .top-image { flex: 1; display: flex; justify-content: center; min-width: 0; }
  .top-image .frame {
    border: 3px solid var(--teal); border-radius: 10px; padding: 14px;
    background: #f7fbfb; width: 100%; display: flex; align-items: center; justify-content: center;
  }
  .top-image .frame.mv { border-color: var(--orange); background: #fdf6ef; }
  
  /* ---------- Stat boxes ---------- */
  .stat-row { display: flex; gap: 14px; margin-top: 24px; flex-wrap: wrap; }
  .stat-box { background: var(--panel-green); border-radius: 10px; padding: 12px 18px; flex: 1 1 150px; min-width: 140px; }
  .stat-box .stat-label { font-size: .78rem; font-weight: 700; color: var(--green); margin-bottom: 2px; }
  .stat-box .stat-value { font-size: .78rem; color: var(--muted); }
  
  /* ---------- Series row ---------- */
  .series-section { margin-top: 46px; }
  .series-intro { color: var(--muted); font-size: .92rem; line-height: 1.7; margin: 0 0 22px; }
  .series-row { display: flex; align-items: flex-end; gap: 32px; flex-wrap: wrap; justify-content: space-between; }
  .series-item { text-align: center; flex: 1 1 120px; }
  .series-item .series-img {
    background: #fafafa; border: 1px solid var(--border); border-radius: 8px; padding: 10px;
    margin-bottom: 10px; height: 62px; display: flex; align-items: center; justify-content: center;
  }
  .series-item .series-name { font-weight: 600; font-size: .85rem; color: var(--ink); }
  
  /* ---------- Section headings ---------- */
  .section-heading { color: var(--teal-dark); font-weight: 700; font-size: 1.15rem; margin: 48px 0 18px; }
  .section-heading.mv { color: var(--orange-dark); }
  
  /* ---------- How it works ---------- */
  .diagram-box { background: #fbfbfb; border: 1px solid #eee; border-radius: 10px; padding: 26px 20px; display: flex; justify-content: center; overflow: hidden; }
  .diagram-box svg { width: 100%; max-width: 700px; }
  
  /* ---------- Key Features ---------- */
  .features-panel { background: var(--panel-blue); border: 1px solid var(--panel-blue-border); border-radius: 14px; padding: 26px 24px; }
  .features-panel.mv { background: #fdf3ea; border-color: #f5ddc3; }
  .features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px 20px; }
  .feature-item { display: flex; align-items: flex-start; gap: 10px; }
  .feature-icon {
    width: 34px; height: 34px; min-width: 34px; border-radius: 8px; background: #ffffff;
    display: flex; align-items: center; justify-content: center; color: var(--teal);
    font-weight: 700; font-size: .95rem; box-shadow: 0 2px 5px rgba(0,0,0,0.06);
  }
  .feature-icon.mv { color: var(--orange); }
  .feature-text { font-size: .8rem; color: var(--ink); line-height: 1.45; font-weight: 500; }
  
  /* ---------- Applications ---------- */
  .applications-text { color: var(--muted); font-size: .92rem; line-height: 1.75; max-width: 950px; }
  .applications-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px 24px; }
  .applications-list li { color: var(--muted); font-size: .88rem; line-height: 1.6; display: flex; gap: 8px; }
  .applications-list li::before { content: "✓"; color: var(--green); font-weight: 700; }
  
  /* ---------- Technical specifications ---------- */
  .specs-wrap { border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
  table.specs-table { width: 100%; border-collapse: collapse; font-size: .84rem; }
  table.specs-table caption { display: none; }
  table.specs-table thead.section-row th {
    background: var(--green); color: #fff; text-align: left; font-size: .74rem;
    text-transform: uppercase; letter-spacing: .5px; padding: 9px 16px; font-weight: 700;
  }
  table.specs-table tbody tr td.spec-label {
    width: 34%; padding: 10px 16px; color: var(--ink); font-weight: 600;
    background: var(--panel-blue); vertical-align: top; border-top: 1px solid var(--panel-blue-border);
  }
  table.specs-table tbody tr td.spec-value {
    padding: 10px 16px; color: var(--muted); vertical-align: top; border-top: 1px solid var(--border);
  }
  table.specs-table tbody tr td.spec-value ul { margin: 0; padding-left: 18px; }
  table.specs-table tbody tr td.spec-value li { margin-bottom: 3px; }
  
  /* ---------- Footer ---------- */
  footer { background: #16192a; color: #cfd3dc; padding: 50px 0 20px; margin-top: 60px; }
  .footer-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr 1fr; gap: 30px; padding-bottom: 30px; }
  .footer-logo { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; font-weight: 800; color: #fff; font-size: 1.05rem; }
  .footer-logo .brand-mark { width: 28px; height: 28px; border-radius: 7px; background: linear-gradient(135deg, var(--teal), var(--teal-dark)); display:flex; align-items:center; justify-content:center; color:#fff; font-weight:800; font-size:.78rem; }
  .footer-col span { font-weight: 600; color: #fff; display: block; margin-bottom: 10px; font-size: .95rem; }
  .footer-col ul { list-style: none; padding: 0; margin: 0; }
  .footer-col li { margin-bottom: 6px; }
  .footer-col a { font-size: .82rem; color: #b7bdc9; }
  .footer-col a:hover { color: #fff; }
  .social-icons { display: flex; gap: 12px; margin-top: 14px; }
  .social-icons a { width: 34px; height: 34px; border-radius: 50%; background: rgba(255,255,255,.08); display: flex; align-items: center; justify-content: center; font-size: .8rem; color: #fff; }
  .footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 18px; font-size: .8rem; color: #9298a5; text-align: center; }
  
  section.top-space-margin { padding-bottom: 60px; }
  
  /* =========================================================
     MOBILE RESPONSIVE BREAKPOINTS
     ========================================================= */
  @media (max-width: 900px) {
    .top-section { flex-direction: column; }
    .top-image { width: 100%; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .applications-list { grid-template-columns: 1fr; }
  }
  
  @media (max-width: 640px) {
    .wrap { padding: 0 16px; }
    .navbar { padding: 12px 16px; }
    .nav-toggle { display: block; }
  
    .nav-links {
      position: fixed; top: 62px; left: 0; right: 0; bottom: 0; background: #fff;
      flex-direction: column; align-items: stretch; gap: 0; padding: 10px 20px 30px;
      transform: translateX(100%); transition: transform .25s ease; overflow-y: auto;
    }
    .nav-links.open { transform: translateX(0); }
    .nav-links > li { border-bottom: 1px solid var(--border); }
    .nav-links a.nav-link { display: block; padding: 14px 0; font-size: 1rem; }
  
    .dropdown-menu { display: none; position: static; border: none; box-shadow: none; padding-left: 12px; margin: 0 0 6px; }
    .nav-item.dropdown.open > .dropdown-menu { display: block; }
    .dropdown-menu .dropdown > .dropdown-menu { left: 0; }
    .dropdown-toggle { position: absolute; right: 0; top: 8px; padding: 10px; cursor: pointer; }
  
    .eyebrow { margin-top: 20px; }
    .product-title { font-size: 1.4rem; margin: 0 0 16px; }
    .top-text p { font-size: .9rem; }
  
    .stat-row { flex-direction: column; }
    .stat-box { min-width: 0; }
  
    .series-section { margin-top: 34px; }
    .series-row { gap: 20px 16px; justify-content: flex-start; }
    .series-item { flex: 1 1 40%; }
  
    .section-heading { font-size: 1.02rem; margin: 34px 0 14px; }
  
    .features-panel { padding: 20px 16px; border-radius: 10px; }
    .features-grid { grid-template-columns: 1fr; gap: 18px; }
  
    .diagram-box { padding: 14px; }
  
    table.specs-table { font-size: .78rem; }
    table.specs-table tbody tr td.spec-label { width: 42%; padding: 8px 10px; }
    table.specs-table tbody tr td.spec-value { padding: 8px 10px; }
  
    .footer-grid { grid-template-columns: 1fr; gap: 26px; text-align: left; }
  }
  
  :root {
    --ink: #1c2430;
    --muted: #5a6472;
    --teal: #1a8f8f;
    --teal-dark: #106868;
    --green: #1f9d55;
    --blue-link: #1f6fd6;
    --panel-blue: #eef4fb;
    --panel-blue-border: #dbe8f6;
    --border: #e7e9ee;
  }

  * { box-sizing: border-box; }

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

  body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--ink);
    background: #ffffff;
    margin: 0;
    line-height: 1.5;
  }

  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; height: auto; display: block; }

  .wrap {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
  }

  /* ---------- Header / Nav ---------- */
  header {
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 100;
  }

  .navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    max-width: 1100px;
    margin: 0 auto;
  }

  .navbar-brand img { height: 34px; width: auto; }

  .nav-toggle {
    display: none;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
  }
  .nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--ink);
    margin: 5px 0;
    transition: transform .2s ease, opacity .2s ease;
  }

  .nav-links {
    display: flex;
    gap: 26px;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
  }
  .nav-links > li { position: relative; }
  .nav-links a.nav-link {
    font-size: .92rem;
    font-weight: 500;
    color: var(--ink);
  }

  /* dropdowns: desktop hover */
  .dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
    min-width: 200px;
    padding: 8px 0;
    box-shadow: 0 10px 30px rgba(0,0,0,.08);
    list-style: none;
    margin: 6px 0 0;
    z-index: 50;
  }
  .nav-item.dropdown:hover > .dropdown-menu { display: block; }
  .dropdown-menu li a { display: block; padding: 8px 16px; font-size: .85rem; }
  .dropdown-menu li a:hover { background: var(--panel-blue); }
  .dropdown-menu .dropdown { position: relative; }
  .dropdown-menu .dropdown > .dropdown-menu {
    top: 0;
    left: 100%;
  }
  .bg-base-color {
    background: var(--panel-blue);
    font-weight: 700;
    font-size: .72rem;
    padding: 6px 16px;
    text-transform: uppercase;
    letter-spacing: .4px;
    color: var(--teal-dark);
  }

  /* ---------- Product hero ---------- */
  .product-title {
    font-size: 1.7rem;
    font-weight: 700;
    margin: 34px 0 20px;
  }
  .product-title .tag {
    color: var(--blue-link);
    font-size: 1rem;
    font-weight: 600;
    margin-left: 6px;
  }

  .top-section {
    display: flex;
    gap: 40px;
    align-items: flex-start;
  }
  .top-text { flex: 1.5; min-width: 0; }
  .top-text p {
    color: var(--muted);
    font-size: .95rem;
    line-height: 1.75;
    margin: 0;
  }
  .top-text b { color: var(--ink); }

  .top-image {
    flex: 1;
    display: flex;
    justify-content: center;
    min-width: 0;
  }
  .top-image .frame {
    border: 3px solid var(--teal);
    border-radius: 10px;
    padding: 14px;
    background: #f7fbfb;
    width: 100%;
  }

  /* ---------- Stat boxes ---------- */
  .stat-row {
    display: flex;
    gap: 14px;
    margin-top: 24px;
    flex-wrap: wrap;
  }
  .stat-box {
    background: #eaf7ee;
    border-radius: 10px;
    padding: 12px 18px;
    flex: 1 1 150px;
    min-width: 140px;
  }
  .stat-box .stat-label {
    font-size: .78rem;
    font-weight: 700;
    color: var(--green);
    margin-bottom: 2px;
  }
  .stat-box .stat-value {
    font-size: .78rem;
    color: var(--muted);
  }

  /* ---------- Series row ---------- */
  .series-section {
    margin-top: 46px;
  }
  .series-intro {
    color: var(--muted);
    font-size: .92rem;
    line-height: 1.7;
    margin: 0 0 22px;
  }
  .series-row {
    display: flex;
    align-items: flex-end;
    gap: 32px;
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .series-item { text-align: center; flex: 1 1 120px; }
  .series-item .series-img {
    background: #fafafa;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 10px;
    height: 62px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .series-item .series-name {
    font-weight: 600;
    font-size: .85rem;
    color: var(--ink);
  }

  /* ---------- Section headings ---------- */
  .section-heading {
    color: var(--teal-dark);
    font-weight: 700;
    font-size: 1.15rem;
    margin: 48px 0 18px;
  }

  /* ---------- How it works ---------- */
  .diagram-box {
    background: #fbfbfb;
    border: 1px solid #eee;
    border-radius: 10px;
    padding: 20px;
    display: flex;
    justify-content: center;
    overflow: hidden;
  }
  .diagram-box img { width: 100%; max-width: 700px; }

  /* ---------- Key Features ---------- */
  .features-panel {
    background: var(--panel-blue);
    border: 1px solid var(--panel-blue-border);
    border-radius: 14px;
    padding: 26px 24px;
  }
  .features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px 20px;
  }
  .feature-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
  }
  .feature-icon {
    width: 34px;
    height: 34px;
    min-width: 34px;
    border-radius: 8px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--teal);
    font-weight: 700;
    font-size: .95rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.06);
  }
  .feature-text {
    font-size: .8rem;
    color: var(--ink);
    line-height: 1.45;
    font-weight: 500;
  }

  /* ---------- Applications ---------- */
  .applications-text {
    color: var(--muted);
    font-size: .92rem;
    line-height: 1.75;
    max-width: 950px;
  }

  section.top-space-margin { padding-bottom: 60px; }

  /* ---------- Footer ---------- */
  footer {
    background: #16192a;
    color: #cfd3dc;
    padding: 50px 0 20px;
    margin-top: 40px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr 1fr;
    gap: 30px;
    padding-bottom: 30px;
  }
  .footer-logo img { height: 30px; margin-bottom: 14px; }
  .footer-col span {
    font-weight: 600;
    color: #fff;
    display: block;
    margin-bottom: 10px;
    font-size: .95rem;
  }
  .footer-col ul { list-style: none; padding: 0; margin: 0; }
  .footer-col li { margin-bottom: 6px; }
  .footer-col a { font-size: .82rem; color: #b7bdc9; }
  .footer-col a:hover { color: #fff; }
  .social-icons { display: flex; gap: 12px; margin-top: 14px; }
  .social-icons a {
    width: 34px; height: 34px; border-radius: 50%;
    background: rgba(255,255,255,.08);
    display: flex; align-items: center; justify-content: center;
    font-size: .8rem; color: #fff;
  }
  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding-top: 18px;
    font-size: .8rem;
    color: #9298a5;
    text-align: center;
  }

  /* =========================================================
     MOBILE RESPONSIVE BREAKPOINTS
     ========================================================= */

  /* Tablet */
  @media (max-width: 900px) {
    .top-section { flex-direction: column; }
    .top-image { width: 100%; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
  }

  /* Mobile */
  @media (max-width: 640px) {
    .wrap { padding: 0 16px; }

    .navbar { padding: 12px 16px; }
    .nav-toggle { display: block; }

    .nav-links {
      position: fixed;
      top: 62px;
      left: 0;
      right: 0;
      bottom: 0;
      background: #fff;
      flex-direction: column;
      align-items: stretch;
      gap: 0;
      padding: 10px 20px 30px;
      transform: translateX(100%);
      transition: transform .25s ease;
      overflow-y: auto;
    }
    .nav-links.open { transform: translateX(0); }
    .nav-links > li {
      border-bottom: 1px solid var(--border);
    }
    .nav-links a.nav-link { display: block; padding: 14px 0; font-size: 1rem; }

    /* dropdowns become static/stacked on mobile, toggled by tap */
    .dropdown-menu {
      display: none;
      position: static;
      border: none;
      box-shadow: none;
      padding-left: 12px;
      margin: 0 0 6px;
    }
    .nav-item.dropdown.open > .dropdown-menu { display: block; }
    .dropdown-menu .dropdown > .dropdown-menu { left: 0; }
    .dropdown-toggle {
      position: absolute;
      right: 0;
      top: 8px;
      padding: 10px;
      cursor: pointer;
    }

    .product-title { font-size: 1.4rem; margin: 22px 0 16px; }

    .top-text p { font-size: .9rem; }

    .stat-row { flex-direction: column; }
    .stat-box { min-width: 0; }

    .series-section { margin-top: 34px; }
    .series-row { gap: 20px 16px; justify-content: flex-start; }
    .series-item { flex: 1 1 40%; }

    .section-heading { font-size: 1.02rem; margin: 34px 0 14px; }

    .features-panel { padding: 20px 16px; border-radius: 10px; }
    .features-grid { grid-template-columns: 1fr; gap: 18px; }

    .diagram-box { padding: 14px; }

    .footer-grid { grid-template-columns: 1fr; gap: 26px; text-align: left; }
  }

  @media (max-width: 360px) {
    .series-item { flex: 1 1 100%; }
  }
  :root {
    --ink: #1c2430;
    --muted: #5a6472;
    --teal: #1a8f8f;
    --teal-dark: #106868;
    --green: #1f9d55;
    --blue-link: #1f6fd6;
    --panel-blue: #eef4fb;
    --panel-blue-border: #dbe8f6;
    --border: #e7e9ee;
  }

  * { box-sizing: border-box; }

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

  body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--ink);
    background: #ffffff;
    margin: 0;
    line-height: 1.5;
  }

  a { color: inherit; text-decoration: none; }
  img { max-width: 100%; height: auto; display: block; }

  .wrap {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
  }

  /* ---------- Header / Nav ---------- */
  header {
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 100;
  }

  .navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    max-width: 1100px;
    margin: 0 auto;
  }

  .navbar-brand img { height: 34px; width: auto; }

  .nav-toggle {
    display: none;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
  }
  .nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--ink);
    margin: 5px 0;
    transition: transform .2s ease, opacity .2s ease;
  }

  .nav-links {
    display: flex;
    gap: 26px;
    list-style: none;
    margin: 0;
    padding: 0;
    align-items: center;
  }
  .nav-links > li { position: relative; }
  .nav-links a.nav-link {
    font-size: .92rem;
    font-weight: 500;
    color: var(--ink);
  }

  /* dropdowns: desktop hover */
  .dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
    min-width: 200px;
    padding: 8px 0;
    box-shadow: 0 10px 30px rgba(0,0,0,.08);
    list-style: none;
    margin: 6px 0 0;
    z-index: 50;
  }
  .nav-item.dropdown:hover > .dropdown-menu { display: block; }
  .dropdown-menu li a { display: block; padding: 8px 16px; font-size: .85rem; }
  .dropdown-menu li a:hover { background: var(--panel-blue); }
  .dropdown-menu .dropdown { position: relative; }
  .dropdown-menu .dropdown > .dropdown-menu {
    top: 0;
    left: 100%;
  }
  .bg-base-color {
    background: var(--panel-blue);
    font-weight: 700;
    font-size: .72rem;
    padding: 6px 16px;
    text-transform: uppercase;
    letter-spacing: .4px;
    color: var(--teal-dark);
  }

  /* ---------- Product hero ---------- */
  .product-title {
    font-size: 1.7rem;
    font-weight: 700;
    margin: 34px 0 20px;
  }
  .product-title .tag {
    color: var(--blue-link);
    font-size: 1rem;
    font-weight: 600;
    margin-left: 6px;
  }

  .top-section {
    display: flex;
    gap: 40px;
    align-items: flex-start;
  }
  .top-text { flex: 1.5; min-width: 0; }
  .top-text p {
    color: var(--muted);
    font-size: .95rem;
    line-height: 1.75;
    margin: 0;
  }
  .top-text b { color: var(--ink); }

  .top-image {
    flex: 1;
    display: flex;
    justify-content: center;
    min-width: 0;
  }
  .top-image .frame {
    border: 3px solid var(--teal);
    border-radius: 10px;
    padding: 14px;
    background: #f7fbfb;
    width: 100%;
  }

  /* ---------- Stat boxes ---------- */
  .stat-row {
    display: flex;
    gap: 14px;
    margin-top: 24px;
    flex-wrap: wrap;
  }
  .stat-box {
    background: #eaf7ee;
    border-radius: 10px;
    padding: 12px 18px;
    flex: 1 1 150px;
    min-width: 140px;
  }
  .stat-box .stat-label {
    font-size: .78rem;
    font-weight: 700;
    color: var(--green);
    margin-bottom: 2px;
  }
  .stat-box .stat-value {
    font-size: .78rem;
    color: var(--muted);
  }

  /* ---------- Series row ---------- */
  .series-section {
    margin-top: 46px;
  }
  .series-intro {
    color: var(--muted);
    font-size: .92rem;
    line-height: 1.7;
    margin: 0 0 22px;
  }
  .series-row {
    display: flex;
    align-items: flex-end;
    gap: 32px;
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .series-item { text-align: center; flex: 1 1 120px; }
  .series-item .series-img {
    background: #fafafa;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px;
    margin-bottom: 10px;
    height: 62px;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .series-item .series-name {
    font-weight: 600;
    font-size: .85rem;
    color: var(--ink);
  }

  /* ---------- Section headings ---------- */
  .section-heading {
    color: var(--teal-dark);
    font-weight: 700;
    font-size: 1.15rem;
    margin: 48px 0 18px;
  }

  /* ---------- How it works ---------- */
  .diagram-box {
    background: #fbfbfb;
    border: 1px solid #eee;
    border-radius: 10px;
    padding: 20px;
    display: flex;
    justify-content: center;
    overflow: hidden;
  }
  .diagram-box img { width: 100%; max-width: 700px; }

  /* ---------- Key Features ---------- */
  .features-panel {
    background: var(--panel-blue);
    border: 1px solid var(--panel-blue-border);
    border-radius: 14px;
    padding: 26px 24px;
  }
  .features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px 20px;
  }
  .feature-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
  }
  .feature-icon {
    width: 34px;
    height: 34px;
    min-width: 34px;
    border-radius: 8px;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--teal);
    font-weight: 700;
    font-size: .95rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.06);
  }
  .feature-text {
    font-size: .8rem;
    color: var(--ink);
    line-height: 1.45;
    font-weight: 500;
  }

  /* ---------- Applications ---------- */
  .applications-text {
    color: var(--muted);
    font-size: .92rem;
    line-height: 1.75;
    max-width: 950px;
  }

  section.top-space-margin { padding-bottom: 60px; }

  /* ---------- Footer ---------- */
  footer {
    background: #16192a;
    color: #cfd3dc;
    padding: 50px 0 20px;
    margin-top: 40px;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr 1fr;
    gap: 30px;
    padding-bottom: 30px;
  }
  .footer-logo img { height: 30px; margin-bottom: 14px; }
  .footer-col span {
    font-weight: 600;
    color: #fff;
    display: block;
    margin-bottom: 10px;
    font-size: .95rem;
  }
  .footer-col ul { list-style: none; padding: 0; margin: 0; }
  .footer-col li { margin-bottom: 6px; }
  .footer-col a { font-size: .82rem; color: #b7bdc9; }
  .footer-col a:hover { color: #fff; }
  .social-icons { display: flex; gap: 12px; margin-top: 14px; }
  .social-icons a {
    width: 34px; height: 34px; border-radius: 50%;
    background: rgba(255,255,255,.08);
    display: flex; align-items: center; justify-content: center;
    font-size: .8rem; color: #fff;
  }
  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding-top: 18px;
    font-size: .8rem;
    color: #9298a5;
    text-align: center;
  }

  /* =========================================================
     MOBILE RESPONSIVE BREAKPOINTS
     ========================================================= */

  /* Tablet */
  @media (max-width: 900px) {
    .top-section { flex-direction: column; }
    .top-image { width: 100%; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
  }

  /* Mobile */
  @media (max-width: 640px) {
    .wrap { padding: 0 16px; }

    .navbar { padding: 12px 16px; }
    .nav-toggle { display: block; }

    .nav-links {
      position: fixed;
      top: 62px;
      left: 0;
      right: 0;
      bottom: 0;
      background: #fff;
      flex-direction: column;
      align-items: stretch;
      gap: 0;
      padding: 10px 20px 30px;
      transform: translateX(100%);
      transition: transform .25s ease;
      overflow-y: auto;
    }
    .nav-links.open { transform: translateX(0); }
    .nav-links > li {
      border-bottom: 1px solid var(--border);
    }
    .nav-links a.nav-link { display: block; padding: 14px 0; font-size: 1rem; }

    /* dropdowns become static/stacked on mobile, toggled by tap */
    .dropdown-menu {
      display: none;
      position: static;
      border: none;
      box-shadow: none;
      padding-left: 12px;
      margin: 0 0 6px;
    }
    .nav-item.dropdown.open > .dropdown-menu { display: block; }
    .dropdown-menu .dropdown > .dropdown-menu { left: 0; }
    .dropdown-toggle {
      position: absolute;
      right: 0;
      top: 8px;
      padding: 10px;
      cursor: pointer;
    }

    .product-title { font-size: 1.4rem; margin: 22px 0 16px; }

    .top-text p { font-size: .9rem; }

    .stat-row { flex-direction: column; }
    .stat-box { min-width: 0; }

    .series-section { margin-top: 34px; }
    .series-row { gap: 20px 16px; justify-content: flex-start; }
    .series-item { flex: 1 1 40%; }

    .section-heading { font-size: 1.02rem; margin: 34px 0 14px; }

    .features-panel { padding: 20px 16px; border-radius: 10px; }
    .features-grid { grid-template-columns: 1fr; gap: 18px; }

    .diagram-box { padding: 14px; }

    .footer-grid { grid-template-columns: 1fr; gap: 26px; text-align: left; }
  }




  /* application section start */


  .scope-grid{
    position:fixed; inset:0; z-index:0; pointer-events:none;
    background-image:
      linear-gradient(var(--grid-line) 1px, transparent 1px),
      linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 44px 44px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 90%);
  }


  /* .reveal{ opacity:0; transform:translateY(24px); transition:opacity .7s ease, transform .7s ease; } */
  /* .reveal.in{ opacity:1; transform:none; } */

  .apps-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-top:52px;}
  
  @media (max-width: 900px){ .apps-grid{ grid-template-columns:1fr;} }
  .app-card{ border:1px solid var(--border); border-radius:6px; 
    padding:28px; background:var(--bg-panel); 
    transition:border-color .25s ease, transform .25s ease, box-shadow .25s ease;
    background: var(--panel-blue);
    border: 1px solid var(--panel-blue-border);}
  .app-card:hover{ border-color:var(--cyan-dim); transform:translateY(-4px); box-shadow:0 12px 24px rgba(16,27,36,0.06);}
  .app-card .icon{ width:36px; height:36px; margin-bottom:18px; color:var(--amber);}
  .app-card h3{ font-size:1.1rem; margin-bottom:14px; color:var(--text);}
 


  .apps-more{ margin-top:22px; display:flex; flex-wrap:wrap; gap:12px;}
  .apps-more span{
    
    border:1px solid var(--border); padding:10px 16px; border-radius:20px; background:var(--bg-panel);
    transition:border-color .25s ease, color .25s ease;
  }
  .apps-more span:hover{ border-color:var(--cyan-dim); color:var(--cyan); }

  ::selection{ background:var(--cyan-dim); color:var(--text);}
/* application section end */


  @media (max-width: 360px) {
    .series-item { flex: 1 1 100%; }
  }
  @media (max-width: 360px) {
    .series-item { flex: 1 1 100%; }
  }