:root {
  --bg: #0f1115;
  --bg-soft: #161a21;
  --card: #1b2029;
  --line: #262c37;
  --text: #e8ecf2;
  --muted: #9aa4b2;
  --accent: #4c8dff;
  --accent-soft: rgba(76, 141, 255, 0.12);
  --radius: 14px;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

header.site {
  border-bottom: 1px solid var(--line);
  background: rgba(15, 17, 21, 0.9);
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  z-index: 10;
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 64px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.brand .mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: grid;
  place-items: center;
  font-size: 15px;
  color: #fff;
}

nav.top {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 14px;
}

nav.top a { color: var(--muted); }
nav.top a:hover { color: var(--text); }

.hero {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--line);
}

.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.hero p.lead {
  margin: 0 0 28px;
  font-size: 18px;
  color: var(--muted);
  max-width: 62ch;
}

.actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 11px 18px;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--card);
  font-weight: 600;
  font-size: 15px;
}

.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn:hover { text-decoration: none; filter: brightness(1.08); }

section { padding: 56px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: 0; }

h2 {
  margin: 0 0 8px;
  font-size: 26px;
  letter-spacing: -0.015em;
}

.section-sub { margin: 0 0 28px; color: var(--muted); max-width: 70ch; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
}

.steps { counter-reset: step; display: grid; gap: 14px; }

.step {
  display: flex;
  gap: 16px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.step::before {
  counter-increment: step;
  content: counter(step);
  flex: 0 0 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  display: grid;
  place-items: center;
}

.step h3 { margin: 0 0 4px; font-size: 16px; }
.step p { margin: 0; color: var(--muted); font-size: 15px; }

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: start;
}

.contacts dl { margin: 0; display: grid; grid-template-columns: 160px 1fr; gap: 10px 16px; }
.contacts dt { color: var(--muted); font-size: 14px; }
.contacts dd { margin: 0; font-size: 15px; }

.legal {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px;
  font-size: 15px;
  color: var(--muted);
}

.legal strong { color: var(--text); }

.doc { max-width: 78ch; }
.doc h1 { margin: 0 0 6px; font-size: 30px; letter-spacing: -0.02em; }
.doc .updated { color: var(--muted); font-size: 14px; margin: 0 0 28px; }
.doc h2 { font-size: 19px; margin: 32px 0 8px; }
.doc p, .doc li { color: #c9d1dc; font-size: 15px; }
.doc ul { padding-left: 20px; }
.doc li { margin-bottom: 6px; }
.doc table { width: 100%; border-collapse: collapse; margin: 12px 0 4px; font-size: 14px; }
.doc th, .doc td { text-align: left; padding: 9px 10px; border: 1px solid var(--line); vertical-align: top; }
.doc th { background: var(--bg-soft); color: var(--text); }

.breadcrumb { font-size: 14px; color: var(--muted); margin: 22px 0 0; }

footer.site {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  color: var(--muted);
  font-size: 14px;
}

footer.site .wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

footer.site nav { display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 720px) {
  .split { grid-template-columns: 1fr; }
  .contacts dl { grid-template-columns: 1fr; gap: 4px 0; }
  .contacts dt { margin-top: 10px; }
}