:root {
  --bg: #fafaf8;
  --text: #1c2321;
  --muted: #5d6865;
  --accent: #0f7b6c;
  --accent-text: #ffffff;
  --card: #ffffff;
  --border: #e2e6e3;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131816;
    --text: #e8ece9;
    --muted: #9aa6a2;
    --accent: #3fb8a5;
    --accent-text: #08201b;
    --card: #1b2220;
    --border: #2b3532;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.65;
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}

header.site {
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}

header.site .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 18px;
  font-size: 0.95rem;
}

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

main { padding: 48px 0 64px; }

h1 {
  font-size: clamp(1.7rem, 4.5vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}

h2 { font-size: 1.35rem; margin: 40px 0 12px; }
h3 { font-size: 1.05rem; margin: 24px 0 8px; }

p, li { max-width: 68ch; }

.lead { font-size: 1.15rem; color: var(--muted); }

.steps {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  display: grid;
  gap: 12px;
}

.steps li {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  max-width: none;
}

.steps strong { display: block; margin-bottom: 2px; }

.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-text);
  padding: 12px 22px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
}

.btn:hover { opacity: 0.9; }

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

.meta { color: var(--muted); font-size: 0.9rem; }

.langs { margin: 16px 0 8px; font-size: 0.95rem; }

hr { border: 0; border-top: 1px solid var(--border); margin: 48px 0; }

footer.site {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 0.9rem;
}

footer.site a { color: var(--muted); margin-right: 16px; }