:root {
  --black: #000000;
  --ink: #0b0d10;
  --panel: #111418;
  --card: #16191d;
  --muted: #bfbfbf;
  --text: #f3f3f3;
  --gold: #fcd40e;
  --gold-2: #ffd40c;
  --green: #00ce1b;
  --line: #2a2e33;
  --header: rgba(18, 18, 18, 0.92);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { overflow-x: hidden; }
body {
  margin: 0;
  font-family: Roboto, Arial, sans-serif;
  background: var(--black);
  color: var(--text);
  line-height: 1.55;
  padding-bottom: env(safe-area-inset-bottom);
}
body.nav-open { overflow: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--gold); text-decoration: none; }
a:hover { color: #fff; }
.wrap { width: min(var(--max), calc(100% - 32px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--header);
  border-bottom: 1px solid rgba(252, 212, 14, 0.18);
  backdrop-filter: blur(10px);
}
.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 84px;
  gap: 24px;
}
.logo img { width: 220px; height: auto; }
.site-nav { display: flex; gap: 28px; align-items: center; }
.site-nav a {
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 13px;
  font-weight: 700;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover,
.site-nav a.is-active { color: var(--gold); border-bottom-color: var(--gold); }
.nav-toggle {
  display: none;
  background: transparent;
  color: #fff;
  border: 1px solid var(--gold);
  padding: 8px 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.hero {
  position: relative;
  min-height: 62vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 90px 16px 80px;
  background:
    linear-gradient(rgba(1, 6, 16, 0.78), rgba(0, 0, 0, 0.88)),
    radial-gradient(circle at 20% 20%, #1a2208 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, #2a2200 0%, transparent 35%),
    repeating-linear-gradient(90deg, rgba(252,212,14,0.04) 0 1px, transparent 1px 80px),
    repeating-linear-gradient(0deg, rgba(252,212,14,0.04) 0 1px, transparent 1px 80px),
    #050505;
}
.hero h1,
.hero h4 {
  margin: 0 0 16px;
  font-size: clamp(28px, 5vw, 46px);
  font-weight: 900;
  letter-spacing: 0.02em;
  color: #f8f8f8;
}
.hero p { max-width: 720px; margin: 0 auto 18px; color: #e6e6e6; font-size: 18px; }
.systems {
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 14px;
}

.btn {
  display: inline-block;
  background: #222529;
  color: #fff;
  border: 1px solid #3a3f45;
  padding: 12px 22px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  font-weight: 700;
}
.btn:hover { background: var(--gold); color: #111; border-color: var(--gold); }
.btn-gold { background: var(--gold); color: #111; border-color: var(--gold); }
.btn-gold:hover { background: #fff; color: #111; }

.section { padding: 72px 0; }
.section-title {
  text-align: center;
  font-size: clamp(26px, 4vw, 38px);
  margin: 0 0 40px;
  color: #f3f3f3;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.section-title:after {
  content: "";
  display: block;
  width: 72px;
  height: 3px;
  background: var(--gold);
  margin: 14px auto 0;
}

.grid-4, .grid-3, .contact-strip, .footer-grid, .product-layout, .spec-list {
  display: grid;
  gap: 28px;
}
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); margin-top: 28px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 18px 18px 24px;
  text-align: center;
  min-height: 100%;
}
.card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  background: #0a0a0a;
  margin-bottom: 16px;
}
.card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.3;
  color: #f8f8f8;
}
.card p { color: var(--muted); font-size: 14px; margin: 0 0 18px; }
.badge {
  display: inline-block;
  color: var(--gold);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.contact-strip {
  grid-template-columns: repeat(3, 1fr);
  background: #0a0a0a;
  padding: 48px 16px;
  text-align: center;
}
.contact-strip h3 { margin: 0 0 8px; color: #ddd; font-size: 18px; }
.contact-strip p { margin: 0; color: #e0e0e0; }
.map-wrap iframe {
  width: 100%;
  height: 380px;
  border: 0;
  display: block;
  filter: grayscale(0.2) contrast(1.05);
}

.page-hero {
  padding: 70px 16px 50px;
  text-align: center;
  background:
    linear-gradient(rgba(0,0,0,.72), rgba(0,0,0,.82)),
    radial-gradient(circle at 50% 0%, #3a3200, #000 60%);
}
.page-hero h1 { margin: 0 0 10px; font-size: clamp(28px, 5vw, 42px); }
.page-hero p { margin: 0; color: #efefef; }

.product-block {
  padding: 56px 0;
  border-top: 1px solid #1c1c1c;
}
.product-block:nth-child(even) { background: #080808; }
.product-layout { grid-template-columns: 340px 1fr; align-items: start; }
.product-photo {
  background: #0a0a0a;
  border: 1px solid var(--line);
  padding: 16px;
}
.product-copy h2 { margin-top: 0; color: var(--gold); font-size: 26px; }
.product-copy .lead { white-space: pre-line; color: #d8d8d8; }
.spec-list {
  grid-template-columns: repeat(2, 1fr);
  margin-top: 24px;
}
.spec-list div {
  background: #111;
  border-left: 3px solid var(--gold);
  padding: 10px 12px;
}
.spec-list strong { display: block; color: var(--gold); font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; }
.spec-list span { color: #eee; }
.product-actions { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 12px; }

.form {
  max-width: 720px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}
.form label { font-size: 13px; color: #ddd; text-transform: uppercase; letter-spacing: 0.06em; }
.form input, .form textarea {
  width: 100%;
  background: #111;
  border: 1px solid #333;
  color: #fff;
  padding: 12px 14px;
  font: inherit;
  font-size: 16px;
}
.form input:focus, .form textarea:focus { outline: 2px solid var(--gold); border-color: var(--gold); }
.hp { position: absolute; left: -9999px; }
.alert { max-width: 720px; margin: 0 auto 20px; padding: 14px 16px; }
.alert-ok { background: #0d2a12; border: 1px solid var(--green); color: #b8ffc2; }
.alert-err { background: #2a0d0d; border: 1px solid #ff4d4d; color: #ffd0d0; }

.wa-float {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 8px;
  background: #25d366;
  color: #fff !important;
  padding: 12px 16px 12px 14px;
  border-radius: 999px;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 13px;
}
.wa-float:hover { background: #1ebe5d; color: #fff !important; transform: translateY(-2px); }
.wa-float svg { display: block; }

.site-footer { background: #000; border-top: 1px solid #222; padding: 56px 0 24px; }
.footer-grid { grid-template-columns: 1.2fr 1fr 0.8fr; }
.site-footer h2 { color: #ddd; font-size: 20px; margin: 0 0 12px; }
.site-footer p, .footer-links a { color: #cfcfcf; }
.footer-brand { text-align: center; }
.footer-brand img { margin: 0 auto 16px; }
.gold-line { height: 1px; background: #5f5f5f; margin: 0 auto 16px; max-width: 180px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin: 8px 0; }
.footer-bottom {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid #222;
  text-align: center;
  color: #aaa;
  font-size: 13px;
}

@media (max-width: 980px) {
  .grid-4, .grid-3 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .product-layout { grid-template-columns: 280px 1fr; }
}
@media (max-width: 720px) {
  .wrap { width: min(var(--max), calc(100% - 24px)); }
  .header-inner { min-height: 72px; }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    min-width: 72px;
  }
  .site-nav {
    display: none;
    position: absolute;
    left: 50%;
    right: auto;
    top: 72px;
    width: 100vw;
    transform: translateX(-50%);
    background: #111;
    flex-direction: column;
    padding: 12px 16px 20px;
    gap: 0;
    border-bottom: 1px solid #333;
  }
  .site-nav a {
    display: block;
    padding: 14px 8px;
    min-height: 48px;
    border-bottom: 1px solid #222;
  }
  .site-nav.is-open { display: flex; }
  .grid-4, .grid-3, .contact-strip, .footer-grid, .product-layout, .spec-list {
    grid-template-columns: 1fr;
  }
  .grid-3 { margin-top: 16px; }
  .logo img { width: min(170px, 58vw); }
  .hero { min-height: auto; padding: 56px 12px 48px; }
  .hero p { font-size: 16px; }
  .systems { letter-spacing: 0.06em; font-size: 12px; }
  .section { padding: 48px 0; }
  .page-hero { padding: 48px 12px 36px; }
  .product-block { padding: 36px 0; }
  .product-copy h2 { font-size: 22px; }
  .product-actions .btn { width: 100%; text-align: center; }
  .map-wrap iframe { height: 260px; }
  .footer-bottom { padding-left: 12px; padding-right: 12px; }
  .wa-float {
    right: max(12px, env(safe-area-inset-right));
    bottom: max(12px, env(safe-area-inset-bottom));
    padding: 12px;
  }
  .wa-float span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .card { padding: 14px 14px 20px; }
  .btn { padding: 14px 18px; }
}
@media (max-width: 420px) {
  .hero h1 { font-size: 26px; }
}