:root {
  --ink: #171c2c;
  --muted: #5f6675;
  --navy: #232a42;
  --gold: #c89745;
  --paper: #f6f7fa;
  --white: #fff;
  --line: #e2e5eb;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Tahoma, Arial, sans-serif;
  line-height: 1.9;
}
a { color: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 74px;
  padding: 10px clamp(18px, 5vw, 72px);
  color: var(--white);
  background: rgba(35, 42, 66, .97);
  box-shadow: 0 2px 14px rgba(0, 0, 0, .14);
}
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 700; }
.brand img { width: 48px; height: 48px; object-fit: contain; }
.site-header nav { display: flex; gap: 18px; font-size: .92rem; }
.site-header nav a { text-decoration: none; }
.site-header nav a:hover { color: #f0c876; }
.hero {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  min-height: 530px;
  padding: clamp(44px, 7vw, 92px) clamp(20px, 7vw, 110px);
  color: var(--white);
  background: linear-gradient(135deg, #1c2238, #343c5b);
}
.breadcrumb { margin: 0 0 18px; color: #d7dbea; font-size: .9rem; }
.breadcrumb a { text-decoration: none; }
.eyebrow { color: #efc572; font-weight: 700; letter-spacing: .04em; }
h1 { margin: 8px 0 18px; font-size: clamp(2rem, 4vw, 3.8rem); line-height: 1.35; }
.lead { max-width: 760px; color: #e4e7ef; font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button { display: inline-block; padding: 11px 22px; border-radius: 6px; background: var(--gold); color: #151827; font-weight: 700; text-decoration: none; }
.button.secondary { border: 1px solid #8990a6; background: transparent; color: var(--white); }
.hero-image { width: 100%; max-height: 390px; object-fit: contain; filter: drop-shadow(0 20px 28px rgba(0,0,0,.32)); }
main > section { padding: clamp(46px, 7vw, 82px) clamp(20px, 7vw, 110px); }
.section-white { background: var(--white); }
.section-title { margin: 0 0 14px; font-size: clamp(1.55rem, 3vw, 2.35rem); line-height: 1.5; }
.section-intro { max-width: 900px; color: var(--muted); }
.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-top: 30px; }
.card { padding: 26px; border: 1px solid var(--line); border-radius: 10px; background: var(--white); box-shadow: 0 8px 25px rgba(28, 34, 56, .06); }
.card h2, .card h3 { margin-top: 0; line-height: 1.5; }
.spec-table-wrap { margin-top: 28px; overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; background: var(--white); }
table { width: 100%; border-collapse: collapse; min-width: 620px; }
th, td { padding: 13px 15px; border-bottom: 1px solid var(--line); text-align: right; }
th { color: var(--white); background: var(--navy); }
tr:last-child td { border-bottom: 0; }
.bullet-list { margin: 0; padding-right: 22px; }
.bullet-list li { margin-bottom: 7px; }
.english { direction: ltr; text-align: left; background: #eef1f6; }
.english .section-intro { margin-right: 0; }
.faq { max-width: 960px; }
details { margin-bottom: 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--white); }
summary { padding: 15px 18px; cursor: pointer; font-weight: 700; }
details p { margin: 0; padding: 0 18px 17px; color: var(--muted); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 25px; }
.related-grid a { padding: 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--white); text-decoration: none; font-weight: 700; }
.related-grid a:hover { border-color: var(--gold); }
.contact-strip { color: var(--white); background: var(--navy); text-align: center; }
.contact-strip p { max-width: 800px; margin: 0 auto 24px; color: #dfe2eb; }
footer { padding: 26px 20px; color: #d8dbe5; background: #171b2c; text-align: center; font-size: .88rem; }

@media (max-width: 820px) {
  .site-header { align-items: flex-start; }
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-image { max-height: 270px; }
  .content-grid, .related-grid { grid-template-columns: 1fr; }
}