:root {
  --bg: #0a0a0a;
  --bg2: #111214;
  --bg3: #17181b;
  --card: #16171a;
  --border: #2a2b2f;
  --text: #f2f2f2;
  --muted: #a8a9ad;
  --accent: #ffffff;
  --accent-dim: #d6d6d6;
  --radius: 10px;
  --maxw: 1180px;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
h1, h2, h3 { font-family: 'Poppins', 'Inter', sans-serif; font-weight: 800; letter-spacing: -0.01em; margin: 0 0 .5em; text-transform: uppercase; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
p { margin: 0 0 1em; color: var(--muted); }

.btn {
  display: inline-block;
  background: #fff;
  color: #0a0a0a;
  font-weight: 700;
  padding: 14px 30px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease;
  font-size: .95rem;
}
.btn:hover { background: var(--accent-dim); transform: translateY(-1px); }
.btn-outline {
  display: inline-block;
  border: 1px solid #fff;
  color: #fff;
  padding: 13px 29px;
  border-radius: 4px;
  font-weight: 700;
  font-size: .95rem;
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 24px;
  padding: 14px 24px;
  background: rgba(10,10,10,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.site-header .logo img { height: 26px; width: auto; }
.main-nav { display: flex; gap: 22px; margin-left: 12px; flex: 1; }
.main-nav a { color: var(--muted); font-size: .92rem; font-weight: 500; }
.main-nav a:hover { color: #fff; }
.lang-switcher { margin-left: auto; overflow-x: auto; white-space: nowrap; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
.lang-switcher::-webkit-scrollbar { display: none; }
.lang-switcher a {
  display: inline-block; padding: 5px 10px; margin-left: 4px;
  font-size: .78rem; font-weight: 700; color: var(--muted);
  border: 1px solid var(--border); border-radius: 4px;
}
.lang-switcher a.active { color: #0a0a0a; background: #fff; border-color: #fff; }
.burger { display: none; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 6px; }
.burger span { width: 22px; height: 2px; background: #fff; display: block; }
.mobile-nav {
  display: none; flex-direction: column; gap: 2px; position: sticky; top: 57px; z-index: 49;
  background: #0a0a0a; border-bottom: 1px solid var(--border); overflow: hidden;
  max-height: 0; transition: max-height .25s ease;
}
.mobile-nav.open { max-height: 300px; }
.mobile-nav a { padding: 14px 24px; border-bottom: 1px solid var(--border); color: var(--muted); font-weight: 600; }

/* Hero */
.hero {
  position: relative;
  background-size: cover; background-position: center 30%;
  min-height: 92vh;
  display: flex; align-items: center;
}
.hero::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,.88) 0%, rgba(0,0,0,.55) 45%, rgba(0,0,0,.25) 100%);
}
.hero-inner { position: relative; z-index: 1; padding: 100px 24px; }
.hero-text { max-width: 620px; }
.hero .eyebrow { display: block; color: var(--accent-dim); font-weight: 600; letter-spacing: .06em; text-transform: uppercase; font-size: .82rem; margin-bottom: 14px; }
.hero h1 { font-size: clamp(2.4rem, 6vw, 3.6rem); line-height: 1.05; margin-bottom: .4em; }
.hero .intro { font-size: 1.08rem; max-width: 520px; margin-bottom: 1.8em; }

/* USP */
.usp { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.usp-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.usp-card {
  padding: 48px 36px;
  border-right: 1px solid var(--border);
  background: linear-gradient(180deg, #17181b, #0a0a0a);
}
.usp-card:last-child { border-right: none; }
.usp-card h3 { font-size: 1.05rem; margin-bottom: .5em; }
.usp-card p { margin: 0; font-size: .92rem; }

/* Products */
.products { padding: 90px 0 40px; }
.products h2, .compare h2, .faq h2, .reviews h2, .story h2 { text-align: center; }
.section-intro { text-align: center; max-width: 620px; margin: 0 auto 3em; }
.product-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  align-items: center;
  padding: 48px 0; border-top: 1px solid var(--border);
}
.product-row:nth-child(even) .pc-image { order: 2; }
.pc-image { position: relative; border-radius: var(--radius); overflow: hidden; background: #000; }
.pc-image img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
.pc-image.slider .slides { position: relative; aspect-ratio: 1/1; }
.pc-image.slider .slide { position: absolute; inset: 0; opacity: 0; transition: opacity .35s ease; width: 100%; height: 100%; object-fit: cover; }
.pc-image.slider .slide.active { opacity: 1; }
.slider-arrow {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(0,0,0,.55); color: #fff; border: none; width: 34px; height: 34px;
  border-radius: 50%; font-size: 1.2rem; cursor: pointer; z-index: 2;
}
.slider-arrow.prev { left: 10px; } .slider-arrow.next { right: 10px; }
.dots { position: absolute; bottom: 10px; left: 0; right: 0; display: flex; justify-content: center; gap: 6px; z-index: 2; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: rgba(255,255,255,.4); border: none; cursor: pointer; }
.dot.active { background: #fff; }
.pc-tag { display: inline-block; font-size: .74rem; font-weight: 700; letter-spacing: .05em; color: #0a0a0a; background: #fff; padding: 4px 10px; border-radius: 3px; text-transform: uppercase; margin-bottom: 12px; }
.pc-body h3 { font-size: 1.5rem; margin-bottom: .3em; }
.pc-desc { font-size: .96rem; }
.pc-lines { list-style: none; margin: 0 0 1.6em; padding: 0; columns: 2; column-gap: 24px; }
.pc-lines li { font-size: .88rem; color: var(--text); padding: 6px 0; border-bottom: 1px solid var(--border); break-inside: avoid; }

/* Compare table */
.compare { padding: 60px 0; background: var(--bg2); }
.compare-scroll { overflow-x: auto; margin-top: 2em; }
.compare-table { width: 100%; border-collapse: collapse; min-width: 560px; }
.compare-table th, .compare-table td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--border); font-size: .88rem; }
.compare-table thead th { background: var(--bg3); font-weight: 700; text-transform: uppercase; letter-spacing: .03em; font-size: .78rem; color: var(--accent-dim); }
.compare-table tbody th { color: var(--muted); font-weight: 500; white-space: nowrap; }
.compare-table td { color: var(--text); }
.compare-table tbody tr:nth-child(even) { background: rgba(255,255,255,.02); }

/* Story / video */
.story { padding: 80px 0; }
.story .story-copy { max-width: 700px; margin: 0 auto 2.5em; text-align: center; }
.story .story-copy p { font-size: 1rem; }
.video-wrap { position: relative; max-width: 860px; margin: 0 auto; aspect-ratio: 16/9; border-radius: var(--radius); overflow: hidden; background: #000; }
.video-wrap iframe { width: 100%; height: 100%; border: 0; }
.story-cta { text-align: center; margin-top: 2.4em; }

/* FAQ */
.faq { padding: 80px 0; background: var(--bg2); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item summary { cursor: pointer; padding: 20px 4px; font-weight: 600; font-size: 1rem; list-style: none; position: relative; padding-right: 30px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; position: absolute; right: 4px; top: 18px; font-size: 1.3rem; color: var(--muted); }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { padding: 0 4px 20px; margin: 0; font-size: .92rem; }

/* Reviews */
.reviews { padding: 80px 0; }
.review-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 2.5em; }
.review-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; }
.review-card .stars { color: #ffb400; letter-spacing: 2px; margin-bottom: 10px; font-size: .85rem; }
.review-card p { font-size: .88rem; color: var(--text); margin-bottom: 14px; }
.review-card .author { font-weight: 700; font-size: .85rem; }
.review-card .loc { font-size: .78rem; color: var(--muted); }

/* Final CTA */
.cta-final { text-align: center; padding: 90px 24px; border-top: 1px solid var(--border); }
.cta-final p { max-width: 480px; margin: 0 auto 1.6em; }

/* Footer */
.site-footer { padding: 32px 24px 60px; border-top: 1px solid var(--border); }
.disclaimer { max-width: var(--maxw); margin: 0 auto; font-size: .76rem; color: #6c6d70; text-align: center; }

/* Reveal animation */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .usp-grid { grid-template-columns: 1fr; }
  .usp-card { border-right: none; border-bottom: 1px solid var(--border); }
  .product-row { grid-template-columns: 1fr; gap: 24px; }
  .product-row:nth-child(even) .pc-image { order: 0; }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .main-nav { display: none; }
  .burger { display: flex; }
  .mobile-nav { display: flex; }
  .lang-switcher { max-width: 140px; }
  .pc-lines { columns: 1; }
  .review-grid { grid-template-columns: 1fr; }
  .hero-inner { padding: 70px 20px; }
  .hero { min-height: 100vh; }
}