:root {
  --navy: #0B1F3A;
  --navy-light: #16335C;
  --teal: #39E6C2;
  --teal-dark: #1FBFA0;
  --orange: #FF7A45;
  --bg: #F5F8FA;
  --card: #FFFFFF;
  --text: #16233A;
  --text-muted: #5B6B85;
  --border: #E3E9F0;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(11, 31, 58, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}
h1, h2, h3 { font-family: 'Poppins', 'Inter', Arial, sans-serif; color: var(--navy); line-height: 1.2; }
h1 { font-size: clamp(2rem, 4.5vw, 3.2rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 700; margin-bottom: .6em; }
h3 { font-size: 1.15rem; font-weight: 700; }
p { line-height: 1.65; color: var(--text-muted); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; background: var(--card); box-shadow: var(--shadow);
  position: sticky; top: 0; z-index: 100; gap: 12px; flex-wrap: nowrap;
}
.logo img { height: 36px; width: auto; }
.main-nav { display: flex; gap: 24px; flex: 1; justify-content: center; }
.main-nav a { font-weight: 600; font-size: .95rem; color: var(--navy); white-space: nowrap; }
.main-nav a:hover { color: var(--teal-dark); }
.lang-switcher { display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; flex-shrink: 0; }
.lang-switcher::-webkit-scrollbar { display: none; }
.lang-switcher a {
  padding: 6px 10px; font-size: .8rem; font-weight: 700; color: var(--text-muted);
  border-radius: 8px; white-space: nowrap;
}
.lang-switcher a.active { background: var(--navy); color: #fff; }
.burger {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 30px; height: 30px; background: none; border: none; cursor: pointer; padding: 0; flex-shrink: 0;
}
.burger span { display: block; width: 100%; height: 2px; background: var(--navy); transition: transform .25s ease, opacity .25s ease; }
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-nav {
  display: none; flex-direction: column; background: var(--card); box-shadow: var(--shadow);
  max-height: 0; overflow: hidden; transition: max-height .3s ease;
}
.mobile-nav a { padding: 14px 20px; font-weight: 600; color: var(--navy); border-top: 1px solid var(--border); }
.mobile-nav.open { max-height: 300px; }

/* Buttons */
.btn {
  display: inline-block; padding: 13px 28px; background: var(--teal);
  color: var(--navy); font-weight: 700; border-radius: 999px; box-shadow: var(--shadow);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); background: var(--teal-dark); box-shadow: 0 12px 28px rgba(11,31,58,.16); }
.btn-outline { background: transparent; border: 2px solid var(--navy); color: var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }

/* Hero */
.hero {
  background-color: var(--navy); background-size: cover; background-position: center right;
  padding: 110px 0; overflow: hidden; position: relative; min-height: 480px; display: flex; align-items: center;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(11,31,58,.92) 0%, rgba(11,31,58,.72) 42%, rgba(11,31,58,.15) 75%);
}
.hero-inner { position: relative; z-index: 1; }
.hero-text { max-width: 560px; }
.hero-text h1 { color: #fff; }
.hero-text .eyebrow { color: var(--teal); font-weight: 700; letter-spacing: .06em; text-transform: uppercase; font-size: .85rem; margin-bottom: 10px; display: block; }
.hero-text p.intro { color: #C9D5E6; font-size: 1.08rem; max-width: 520px; margin: 18px 0 28px; }

/* USP */
.usp { padding: 60px 0 20px; }
.usp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.usp-card {
  background: var(--card); border-radius: var(--radius); padding: 28px 24px; box-shadow: var(--shadow);
  border-top: 4px solid var(--teal); transition: transform .2s ease;
}
.usp-card:hover { transform: translateY(-4px); }
.usp-card .icon { font-size: 2rem; margin-bottom: 10px; display: block; }

/* Product blocks */
.products { padding: 40px 0; }
.section-intro { max-width: 720px; margin: 0 auto 36px; text-align: center; }
.product-list { display: flex; flex-direction: column; gap: 56px; }
.product-row {
  display: flex; align-items: center; gap: 48px;
  padding-bottom: 48px; border-bottom: 1px solid var(--border);
}
.product-row:last-child { border-bottom: none; padding-bottom: 0; }
.product-row .pc-image { flex: 0 0 46%; max-width: 46%; background: #EEF3F8; border-radius: var(--radius); padding: 20px; text-align: center; position: relative; }
.product-row .pc-image img { margin: 0 auto; max-height: 360px; width: auto; }
.product-row .pc-image.slider { padding: 20px 0 40px; overflow: hidden; }
.product-row .slides { position: relative; height: 360px; }
.product-row .slide { position: absolute; inset: 0; margin: 0 auto; max-height: 360px; width: auto; opacity: 0; transition: opacity .35s ease; pointer-events: none; }
.product-row .slide.active { opacity: 1; pointer-events: auto; }
.product-row .slider-arrow {
  position: absolute; top: 45%; transform: translateY(-50%); background: rgba(255,255,255,.92);
  border: none; width: 38px; height: 38px; border-radius: 50%; font-size: 1.3rem; color: var(--navy);
  cursor: pointer; box-shadow: var(--shadow); line-height: 1;
}
.product-row .slider-arrow.prev { left: 10px; }
.product-row .slider-arrow.next { right: 10px; }
.product-row .slider-arrow:hover { background: var(--teal); }
.product-row .dots { position: absolute; bottom: 12px; left: 0; right: 0; display: flex; justify-content: center; gap: 6px; }
.product-row .dot { width: 7px; height: 7px; border-radius: 50%; border: none; background: #C7D2E0; padding: 0; cursor: pointer; }
.product-row .dot.active { background: var(--teal-dark); width: 18px; border-radius: 4px; }
.product-row .pc-body { flex: 1; display: flex; flex-direction: column; gap: 12px; }
.product-row .pc-tag { display: inline-block; background: rgba(57,230,194,.15); color: var(--teal-dark); font-weight: 700; font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; padding: 4px 10px; border-radius: 999px; width: fit-content; }
.product-row h3 { margin: 0; }
.product-row .pc-desc { font-size: .96rem; }
.product-row .pc-lines { list-style: none; margin: 4px 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.product-row .pc-lines li { font-size: .9rem; color: var(--text); font-weight: 600; padding-left: 26px; position: relative; }
.product-row .pc-lines li::before { content: '✓'; position: absolute; left: 0; top: -1px; color: var(--teal-dark); font-weight: 800; background: rgba(57,230,194,.15); width: 18px; height: 18px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: .7rem; }
.product-row .btn { align-self: flex-start; margin-top: 6px; }

/* Video */
.video-section { padding: 50px 0; }
.video-wrap { position: relative; padding-bottom: 56.25%; height: 0; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); max-width: 860px; margin: 0 auto; }
.video-wrap iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.product-card .pc-body { padding: 20px 22px 24px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.product-card .pc-tag { display: inline-block; background: rgba(57,230,194,.15); color: var(--teal-dark); font-weight: 700; font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; padding: 4px 10px; border-radius: 999px; width: fit-content; }
.product-card h3 { margin: 0; }
.product-card .pc-desc { font-size: .93rem; flex: 1; }
.product-card .pc-specs { display: flex; flex-wrap: wrap; gap: 8px; font-size: .8rem; color: var(--navy); font-weight: 600; }
.product-card .pc-specs span { background: var(--bg); padding: 4px 10px; border-radius: 8px; }
.product-card .btn { margin-top: 6px; text-align: center; }

/* Compare table */
.compare { padding: 50px 0; }
.compare-scroll { overflow-x: auto; border-radius: var(--radius); box-shadow: var(--shadow); }
.compare-table { border-collapse: collapse; width: 100%; min-width: 760px; background: var(--card); }
.compare-table th, .compare-table td { padding: 12px 16px; text-align: center; border-bottom: 1px solid var(--border); font-size: .88rem; }
.compare-table thead th { background: var(--navy); color: #fff; font-weight: 700; position: sticky; top: 0; }
.compare-table tbody th { text-align: left; font-weight: 700; color: var(--navy); background: var(--bg); white-space: nowrap; }
.compare-table tbody tr:nth-child(even) td { background: #FAFCFD; }

/* Reviews */
.reviews { padding: 50px 0; background: var(--card); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review-card { background: var(--bg); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.review-card .stars { color: var(--orange); font-size: 1rem; margin-bottom: 10px; }
.review-card p { color: var(--text); font-style: italic; }
.review-card .author { margin-top: 14px; font-weight: 700; color: var(--navy); font-style: normal; }

/* FAQ */
.faq { padding: 50px 0; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item summary {
  cursor: pointer; padding: 18px 4px; font-weight: 700; color: var(--navy);
  list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 1.4rem; color: var(--teal-dark); transition: transform .25s ease; flex-shrink: 0; }
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 4px 18px; margin: 0; }

/* Final CTA */
.cta-final { padding: 64px 0; text-align: center; background: linear-gradient(135deg, var(--navy), var(--navy-light)); border-radius: var(--radius); margin: 40px auto; max-width: 1180px; }
.cta-final h2 { color: #fff; }
.cta-final p { color: #C9D5E6; max-width: 560px; margin: 0 auto 24px; }

/* Footer */
.site-footer { padding: 40px 0 28px; text-align: center; }
.site-footer .disclaimer { font-size: .78rem; color: #93A0B4; max-width: 720px; margin: 0 auto; }

/* Scroll reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 900px) {
  .usp-grid, .review-grid { grid-template-columns: 1fr; }
  .main-nav { display: none; }
  .burger { display: flex; }
  .mobile-nav { display: flex; }
  .product-row { flex-direction: column; gap: 20px; }
  .product-row .pc-image, .product-row .pc-image.slider { flex: none; max-width: 100%; width: 100%; }
}
@media (max-width: 600px) {
  .site-header { padding: 10px 14px; }
  .logo img { height: 28px; }
  .lang-switcher a { padding: 5px 8px; font-size: .74rem; }
  .cta-final { margin: 24px 12px; border-radius: 10px; }
}