:root {
  --bg: #f7f6fb;
  --surface: #ffffff;
  --text: #14132b;
  --muted: #6b6a82;
  --accent: #5b51d8;
  --accent-2: #8e4cd4;
  --border: rgba(20, 19, 43, 0.08);
  --radius: 14px;
  --max: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0a1a;
    --surface: #15132a;
    --text: #f3f1ff;
    --muted: #9b96b8;
    --border: rgba(255, 255, 255, 0.08);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 48px 20px 80px;
}

header.site {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 32px;
}

header.site .logo {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 18px;
}

header.site h1 {
  font-size: 18px;
  margin: 0;
  font-weight: 700;
}

header.site .crumbs {
  margin-left: auto;
  font-size: 14px;
  color: var(--muted);
}

main {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}

h1.title {
  font-size: 30px;
  margin: 0 0 6px;
  letter-spacing: -0.02em;
}

p.lead {
  color: var(--muted);
  margin: 0 0 28px;
  font-size: 15px;
}

h2 {
  font-size: 18px;
  margin: 32px 0 8px;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 15px;
  margin: 20px 0 6px;
  color: var(--text);
}

p, ul, ol {
  margin: 8px 0;
}

ul, ol {
  padding-left: 22px;
}

li { margin: 4px 0; }

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 28px 0;
}

footer {
  margin-top: 24px;
  font-size: 13px;
  color: var(--muted);
  text-align: center;
}

.card {
  background: linear-gradient(135deg, rgba(91, 81, 216, 0.08), rgba(142, 76, 212, 0.08));
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  margin: 20px 0;
}

.nav-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin: 24px 0 0;
}

.nav-links a {
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(91, 81, 216, 0.10);
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
}

.nav-links a:hover { text-decoration: none; background: rgba(91, 81, 216, 0.18); }

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  background: rgba(91, 81, 216, 0.10);
  padding: 1px 6px;
  border-radius: 4px;
}