:root {
  --bg: #f6f8fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #64748b;
  --line: #e5e7eb;
  --accent: #2563eb;
  --accent-2: #14b8a6;
  --ok: #10b981;
  --code: #f1f5f9;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

a {
  color: inherit;
  text-decoration: none;
}

.header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.logo {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  display: grid;
  place-items: center;
  font-weight: 800;
}

.links {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

.links a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 72px 24px;
}

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: white;
  color: var(--muted);
  font-size: 14px;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.12);
}

h1 {
  margin: 18px 0 18px;
  font-size: clamp(38px, 6vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.06em;
}

h2 {
  margin: 0 0 16px;
  font-size: 28px;
  letter-spacing: -0.04em;
}

p {
  color: var(--muted);
  line-height: 1.7;
  font-size: 16px;
}

.hero p {
  font-size: 18px;
  max-width: 680px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 26px;
  box-shadow: 0 16px 46px rgba(15, 23, 42, 0.07);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.item {
  background: white;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
}

.item strong {
  display: block;
  margin-bottom: 8px;
}

.item span {
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
}

.code {
  display: block;
  padding: 16px;
  border-radius: 14px;
  background: var(--code);
  border: 1px solid var(--line);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--text);
  overflow-x: auto;
}

.footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 28px 24px;
  font-size: 14px;
}

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

@media (max-width: 780px) {
  .hero {
    grid-template-columns: 1fr;
  }

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

  .links {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
  }
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: white;
}

.lang-switch button {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
}

.lang-switch button.active {
  background: var(--text);
  color: white;
}

[data-lang="en"] .ru {
  display: none;
}

[data-lang="ru"] .en {
  display: none;
}