:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-alt: #eef3fb;
  --text: #162033;
  --muted: #5b6780;
  --line: #dbe4f1;
  --primary: #0f1f3d;
  --accent: #2563eb;
  --accent-soft: rgba(37, 99, 235, 0.12);
  --success: #0f8a5f;
  --danger: #c0392b;
  --warning-bg: #fff7df;
  --warning-border: #f2c94c;
  --shadow: 0 18px 48px rgba(16, 30, 61, 0.08);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
code {
  background: #f0f4fa;
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
}

.container {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(255,255,255,0.9);
  border-bottom: 1px solid rgba(219, 228, 241, 0.9);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.brand {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--primary);
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav a {
  color: var(--muted);
  font-weight: 500;
}

.nav a:hover { color: var(--accent); }

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 1.1rem;
}

.hero {
  padding: 72px 0 48px;
  background: radial-gradient(circle at top right, rgba(37, 99, 235, 0.12), transparent 25%), linear-gradient(180deg, #ffffff 0%, #f4f7fb 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.8fr);
  gap: 28px;
  align-items: start;
}

.eyebrow,
.section-tag,
.docs-status,
.doc-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.eyebrow,
.section-tag {
  padding: 8px 14px;
  background: var(--accent-soft);
  color: var(--accent);
}

.hero h1 {
  margin: 18px 0 16px;
  font-size: clamp(2rem, 4vw, 3.65rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--primary);
}

.lead {
  margin: 0;
  max-width: 760px;
  font-size: 1.08rem;
  color: var(--muted);
}

.hero-actions,
.doc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 12px;
  font-weight: 700;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 14px 30px rgba(15, 31, 61, 0.16);
}

.btn-secondary {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--primary);
}

.hero-card,
.feature-card,
.product-card,
.document-card,
.sidebar-card,
.contact-card,
.legal-box {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 24px;
}

.status-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  color: var(--success);
  background: rgba(15, 138, 95, 0.08);
  font-weight: 700;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--success);
}

.meta-list,
.sidebar-list {
  display: grid;
  gap: 14px;
  margin: 18px 0 0;
}

.meta-list div,
.sidebar-list div {
  display: grid;
  gap: 4px;
}

.meta-list dt,
.sidebar-list dt {
  color: var(--muted);
  font-size: 0.88rem;
}

.meta-list dd,
.sidebar-list dd {
  margin: 0;
  font-weight: 700;
}

.note,
.document-summary,
.sidebar-note {
  color: var(--muted);
}

.section {
  padding: 72px 0;
}

.section-alt { background: #f8fbff; }
.section-docs { background: linear-gradient(180deg, #f8fbff 0%, #eef4ff 100%); }

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.section-head h2 {
  margin: 12px 0 0;
  font-size: clamp(1.6rem, 2vw, 2.3rem);
  line-height: 1.15;
  color: var(--primary);
}

.feature-grid,
.product-grid,
.contacts-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feature-card,
.product-card,
.contact-card {
  padding: 24px;
}

.feature-card h3,
.product-card h3,
.contact-card h3,
.document-card h3,
.sidebar-card h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  color: var(--primary);
}

.feature-card p,
.product-card p,
.contact-card p,
.timeline-item p,
.document-card p {
  margin: 0;
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 18px;
  align-items: start;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.timeline-step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
}

.timeline-item h3 {
  margin: 2px 0 6px;
}

.legal-box {
  margin-top: 20px;
  padding: 18px 20px;
  border-left: 5px solid var(--warning-border);
  background: var(--warning-bg);
  box-shadow: none;
}

.docs-head { align-items: center; }
.docs-status {
  padding: 10px 14px;
  color: var(--success);
  background: rgba(15, 138, 95, 0.08);
}

.docs-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: 22px;
}

.document-card,
.sidebar-card {
  padding: 28px;
}

.document-card-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.doc-badge {
  padding: 7px 12px;
  background: #e9eef8;
  color: var(--primary);
}

.doc-badge + .doc-badge { margin-left: 8px; }
.doc-badge-red { background: rgba(192, 57, 43, 0.12); color: var(--danger); }
.doc-badge-dark { background: var(--primary); color: #fff; }

.doc-meta-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 20px 0;
}

.doc-meta-grid div {
  padding: 14px 16px;
  background: #f5f8fd;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.doc-meta-grid span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.86rem;
}

.doc-content-box {
  padding: 20px;
  border-radius: 16px;
  background: #0f1f3d;
  color: #fff;
}

.doc-content-box h4 {
  margin: 0 0 12px;
}

.doc-content-box ul {
  margin: 0;
  padding-left: 20px;
}

.doc-content-box li { margin: 8px 0; }

.sidebar-note {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 14px;
  background: #f5f8fd;
  border: 1px solid var(--line);
}

.footer {
  padding: 26px 0 40px;
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 980px) {
  .hero-grid,
  .docs-layout,
  .feature-grid,
  .product-grid,
  .contacts-grid,
  .doc-meta-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-grid,
  .docs-layout {
    grid-template-columns: 1fr;
  }

  .nav {
    display: none;
    position: absolute;
    top: 72px;
    right: 16px;
    left: 16px;
    flex-direction: column;
    align-items: flex-start;
    padding: 18px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: var(--shadow);
  }

  .nav.open { display: flex; }
  .menu-toggle { display: inline-flex; }
}

@media (max-width: 640px) {
  .section,
  .hero { padding: 56px 0; }

  .feature-grid,
  .product-grid,
  .contacts-grid,
  .doc-meta-grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .topbar-inner { min-height: 68px; }

  .document-card,
  .sidebar-card,
  .hero-card,
  .feature-card,
  .product-card,
  .contact-card { padding: 22px; }

  .timeline-item {
    grid-template-columns: 1fr;
  }
}