:root {
  --ink: #f5f5f5;
  --ink-muted: #a3a3a3;
  --ink-faint: #737373;
  --paper: #0a0a0a;
  --elev: #141414;
  --line: #2a2a2a;
  --accent: #ffffff;
  --font: "IBM Plex Sans", "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  background-image: radial-gradient(90% 50% at 50% 0%, #1a1a1a 0%, transparent 70%);
  background-repeat: no-repeat;
}

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

.wrap {
  width: min(720px, calc(100% - 40px));
  margin: 0 auto;
  padding: 40px 0 64px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 48px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.03em;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 16px;
  font-size: 13px;
  font-weight: 500;
}

.nav-links a {
  color: var(--ink-muted);
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ink);
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(34px, 6vw, 48px);
  letter-spacing: -0.05em;
  line-height: 1.05;
}

.hero p {
  margin: 0;
  color: var(--ink-muted);
  font-size: 17px;
  max-width: 38ch;
}

.cards {
  display: grid;
  gap: 12px;
  margin-top: 36px;
}

.card {
  display: block;
  padding: 18px 20px;
  border-radius: 14px;
  background: var(--elev);
  border: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: border-color 160ms ease;
}

.card:hover { border-color: #525252; }

.card strong {
  display: block;
  font-size: 15px;
  margin-bottom: 4px;
}

.card span {
  color: var(--ink-muted);
  font-size: 13px;
}

.doc h1 {
  margin: 0 0 8px;
  font-size: 32px;
  letter-spacing: -0.04em;
}

.meta {
  margin: 0 0 28px;
  color: var(--ink-faint);
  font-size: 13px;
  font-family: var(--mono);
}

.doc h2 {
  margin: 28px 0 10px;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.doc h3 {
  margin: 18px 0 8px;
  font-size: 15px;
  color: var(--ink);
}

.doc p, .doc li {
  color: var(--ink-muted);
  font-size: 15px;
}

.doc ul {
  padding-left: 1.2em;
  margin: 0 0 8px;
}

.doc li { margin: 6px 0; }

.doc strong { color: var(--ink); }

.footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 12px;
}

.howto-steps {
  list-style: none;
  padding: 0;
  margin: 28px 0 8px;
  counter-reset: howto;
}

.howto-steps li {
  counter-increment: howto;
  display: grid;
  grid-template-columns: 28px 1fr;
  column-gap: 14px;
  row-gap: 4px;
  margin: 0 0 20px;
  align-items: start;
}

.howto-steps li::before {
  content: counter(howto);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-faint);
  line-height: 1.6;
}

.howto-steps strong {
  grid-column: 2;
  color: var(--ink);
  font-size: 16px;
  letter-spacing: -0.02em;
}

.howto-steps span {
  grid-column: 2;
  color: var(--ink-muted);
  font-size: 14px;
  line-height: 1.5;
}

.howto-get {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.howto-get h2 {
  margin-top: 0;
}

.howto-note {
  color: var(--ink-faint) !important;
  font-size: 13px !important;
}

.cta-link {
  display: inline-block;
  margin-top: 4px;
  padding: 12px 18px;
  border-radius: 12px;
  background: var(--accent);
  color: var(--paper);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.02em;
}

.cta-link:hover {
  color: var(--paper);
  filter: brightness(0.92);
}