:root {
  color-scheme: dark;
  --bg: #050606;
  --surface: #101112;
  --surface-2: #17191b;
  --line: #2a2d30;
  --text: #f4f4f3;
  --muted: #b8babd;
  --soft: #85898d;
  --accent: #c6ff1a;
  --max: 900px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 82% 0%, rgba(198, 255, 26, 0.08), transparent 30rem),
    linear-gradient(180deg, #080909 0%, #050606 42%, #050606 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  line-height: 1.72;
}

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

a:hover {
  text-decoration: underline;
}

.shell {
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(5, 6, 6, 0.74);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 2;
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  color: var(--text);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.brand .z {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: flex-end;
  font-size: 14px;
  color: var(--muted);
}

.nav-links a {
  color: var(--muted);
}

.hero {
  padding: 92px 0 58px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 780px;
  font-size: clamp(44px, 8vw, 76px);
  line-height: 1.02;
  letter-spacing: 0;
}

.lead {
  margin: 24px 0 0;
  max-width: 680px;
  color: var(--muted);
  font-size: 18px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding-bottom: 72px;
}

.card {
  min-height: 160px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(23, 25, 27, 0.92), rgba(12, 13, 14, 0.92));
}

.card h2 {
  margin: 0 0 10px;
  font-size: 18px;
  line-height: 1.25;
}

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

.doc {
  padding: 58px 0 78px;
}

.doc-header {
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.doc-header h1 {
  font-size: clamp(38px, 7vw, 64px);
}

.updated {
  margin: 18px 0 0;
  color: var(--soft);
  font-size: 14px;
}

.lang-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.lang-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: var(--surface);
  font-size: 13px;
}

.section {
  padding-top: 42px;
}

.section + .section {
  margin-top: 48px;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 20px;
  font-size: 30px;
  line-height: 1.2;
}

h3 {
  margin: 30px 0 8px;
  font-size: 19px;
  line-height: 1.35;
}

p,
li {
  color: var(--muted);
}

ul,
ol {
  padding-left: 1.35rem;
}

.contact-line {
  display: inline-flex;
  margin: 6px 0 14px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-weight: 650;
}

.site-footer {
  padding: 34px 0 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--soft);
  font-size: 13px;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px 0;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .hero {
    padding-top: 64px;
  }

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