:root {
  --bg: #0b1220;
  --surface: #111a2d;
  --surface-2: #f4f7fb;
  --card: #ffffff;
  --text: #111827;
  --text-light: #dce6f8;
  --muted: #6b7280;
  --line: #d9e1ee;
  --brand: #2563eb;
  --brand-dark: #1d4ed8;
  --radius: 22px;
  --shadow: 0 20px 50px rgba(15, 23, 42, 0.12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--text);
  background: #fff;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 18, 32, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header--small { position: static; }
.header__inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.logo {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.08em;
  color: #fff;
}
.nav {
  display: flex;
  align-items: center;
  gap: 20px;
}
.nav a {
  color: rgba(255,255,255,0.86);
  font-size: 0.95rem;
}
.nav a:hover { color: #fff; }
.burger {
  display: none;
  font-size: 1.5rem;
  background: transparent;
  color: #fff;
  border: 0;
}
.hero {
  background: linear-gradient(135deg, #0b1220 0%, #102247 45%, #123165 100%);
  color: #fff;
  padding: 82px 0 64px;
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.35fr 0.8fr;
  gap: 28px;
  align-items: center;
}
.eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.1);
  color: #cfe0ff;
  font-size: 0.86rem;
  font-weight: 600;
}
.hero h1,
.section h2,
.doc h1 {
  margin: 0;
  line-height: 1.05;
}
.hero h1 { font-size: clamp(2.1rem, 5vw, 4.2rem); max-width: 12ch; }
.hero__text {
  margin: 20px 0 0;
  max-width: 64ch;
  color: var(--text-light);
  font-size: 1.07rem;
  line-height: 1.7;
}
.hero__actions,
.contact-actions {
  margin-top: 28px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 18px;
  border-radius: 14px;
  font-weight: 700;
  transition: 0.2s ease;
}
.btn--primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.25);
}
.btn--primary:hover { background: var(--brand-dark); }
.btn--ghost {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.14);
}
.btn--ghost:hover { background: rgba(255,255,255,0.14); }
.hero__facts {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.hero__facts li::before {
  content: "•";
  color: #93c5fd;
  margin-right: 10px;
}
.hero-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.metric + .metric {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,0.12);
}
.metric__value {
  display: block;
  font-size: 1.9rem;
  font-weight: 800;
}
.metric__label {
  display: block;
  margin-top: 6px;
  color: #d9e6ff;
}
.section { padding: 76px 0; }
.section--muted { background: var(--surface-2); }
.section-head { margin-bottom: 26px; }
.section h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  max-width: 16ch;
}
.cards {
  display: grid;
  gap: 18px;
}
.cards--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.card h3 {
  margin: 0 0 12px;
  font-size: 1.16rem;
}
.card p,
.card li,
.doc p,
.doc li {
  color: #374151;
  line-height: 1.7;
}
.product-card { min-height: 190px; }
.requisites-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
}
.details-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}
.note {
  margin: 18px 0 0;
  color: var(--muted);
}
.contact-box {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 28px;
  background: linear-gradient(135deg, #eff6ff, #f8fafc);
  border-radius: var(--radius);
  border: 1px solid var(--line);
}
.footer {
  padding: 28px 0 40px;
  background: #0b1220;
  color: #fff;
}
.footer__inner {
  display: flex;
  gap: 24px;
  justify-content: space-between;
  align-items: flex-start;
}
.footer__inner p {
  margin: 8px 0 0;
  color: rgba(255,255,255,0.72);
}
.footer__links {
  display: grid;
  gap: 10px;
}
.footer__links a { color: rgba(255,255,255,0.86); }
.doc-page {
  background: #f8fafc;
  padding: 32px 0 64px;
}
.doc {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: 32px;
  box-shadow: var(--shadow);
}
.doc h1 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  margin-bottom: 18px;
}
.doc h2 {
  margin-top: 28px;
  margin-bottom: 12px;
  font-size: 1.35rem;
}
.doc ul {
  padding-left: 20px;
}
@media (max-width: 900px) {
  .hero__grid,
  .cards--3,
  .cards--4,
  .requisites-grid,
  .contact-box,
  .footer__inner {
    grid-template-columns: 1fr;
    display: grid;
  }
  .hero h1,
  .section h2 { max-width: none; }
}
@media (max-width: 760px) {
  .burger { display: block; }
  .nav {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 76px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
    border-radius: 18px;
    background: #0f172a;
    border: 1px solid rgba(255,255,255,0.08);
  }
  .nav.nav--static {
    position: static;
    display: flex;
    padding: 0;
    background: transparent;
    border: 0;
  }
  .nav.is-open { display: flex; }
  .section,
  .hero { padding-top: 56px; padding-bottom: 56px; }
  .hero__facts { font-size: 0.96rem; }
  .doc { padding: 22px; }
}