:root {
  color-scheme: dark;
  --bg: #0c0f14;
  --text: #e8edf5;
  --muted: #8b95a8;
  --accent: #5eead4;
  --border: #2a3344;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at top, #152033, var(--bg));
  color: var(--text);
  padding: 2rem 1.25rem 3rem;
  line-height: 1.6;
}

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

.site-header {
  max-width: 42rem;
  margin: 0 auto 2rem;
  text-align: center;
}

.site-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 0.5rem;
}

.site-header p {
  color: var(--muted);
  margin: 0;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.btn {
  display: inline-block;
  color: var(--bg);
  background: var(--accent);
  text-decoration: none;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
}

.btn.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.landing-main {
  max-width: 40rem;
  margin: 0 auto;
  text-align: center;
}

.doc {
  max-width: 42rem;
  margin: 0 auto;
}

.doc h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  margin: 0 0 0.5rem;
}

.doc .meta {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0 0 2rem;
}

.doc h2 {
  font-size: 1.15rem;
  margin: 2rem 0 0.75rem;
}

.doc p,
.doc li {
  color: var(--text);
}

.doc ul {
  padding-left: 1.25rem;
}

.doc li + li {
  margin-top: 0.35rem;
}

.site-footer {
  max-width: 42rem;
  margin: 3rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer a {
  color: var(--muted);
}

.site-footer a:hover {
  color: var(--accent);
}