:root {
  --bg: #0b0d16;
  --panel: #141829;
  --panel-2: #1b2035;
  --border: #2a2f4a;
  --text: #f1f3fb;
  --text-dim: #9aa0c3;
  --purple: #7c6cff;
  --cyan: #38bdf8;
  --radius: 16px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(900px 420px at 10% -10%, rgba(124, 108, 255, 0.12), transparent 60%),
    radial-gradient(800px 400px at 100% 0%, rgba(56, 189, 248, 0.1), transparent 55%),
    linear-gradient(180deg, #0b0d16 0%, #0e1120 60%, #0b0d16 100%);
  color: var(--text);
  min-height: 100vh;
}

.page {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 64px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
}

.brand-logo {
  height: 34px;
  width: auto;
  display: block;
  background: #fff;
  border-radius: 8px;
  padding: 4px 8px;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.site-nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
}

.site-nav a:hover { color: var(--text); }

.site-nav a.active {
  background: linear-gradient(135deg, var(--purple), #9b8cff);
  color: white;
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.home-link {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
}

.home-link:hover { color: var(--text); }

.doc-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.doc-nav a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-2);
}

.doc-nav a:hover { color: var(--text); border-color: var(--purple); }
.doc-nav a.current {
  color: white;
  background: linear-gradient(135deg, var(--purple), #9b8cff);
  border-color: transparent;
}

.doc {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px clamp(20px, 4vw, 48px);
}

.doc h1 {
  margin: 0 0 6px;
  font-size: clamp(1.5rem, 3vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.doc .updated {
  margin: 0 0 28px;
  color: var(--text-dim);
  font-size: 0.82rem;
}

.doc h2 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 32px 0 10px;
  padding-top: 4px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

.doc h2:first-of-type { border-top: none; padding-top: 0; margin-top: 8px; }

.doc p, .doc li {
  color: #d7dbee;
  font-size: 0.92rem;
  line-height: 1.65;
}

.doc ul, .doc ol {
  margin: 10px 0;
  padding-left: 22px;
}

.doc li { margin-bottom: 6px; }

.doc a { color: var(--cyan); }

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

.callout {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--purple);
  border-radius: 10px;
  padding: 14px 16px;
  font-size: 0.86rem;
  color: var(--text-dim);
  margin: 16px 0;
}

.placeholder {
  color: #ffd76a;
  font-style: italic;
}

.page-footer {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.78rem;
}