:root {
  --bg: #0e1116; --panel: #151a21; --border: #243044;
  --text: #e6edf7; --muted: #8b9bb4; --accent: #3b82f6;
}
* { box-sizing: border-box; }
body { margin: 0; font: 13px/1.55 ui-sans-serif, system-ui, sans-serif; background: var(--bg); color: var(--text); }
.top {
  height: 44px; border-bottom: 1px solid var(--border); background: var(--panel);
  display: flex; align-items: center; justify-content: space-between; padding: 0 16px;
}
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); text-decoration: none; font-weight: 600; }
.brand em { color: var(--muted); font-style: normal; font-weight: 500; }
.logo {
  width: 24px; height: 24px; border-radius: 6px; background: var(--accent);
  display: grid; place-items: center; font-size: 10px; font-weight: 700; color: #fff;
}
.top a { color: var(--muted); text-decoration: none; font-size: 12.5px; }
.layout { display: flex; min-height: calc(100vh - 44px); }
.side {
  width: 200px; border-right: 1px solid var(--border); padding: 12px 10px;
  background: var(--panel); display: flex; flex-direction: column; gap: 2px;
}
.nav-link {
  display: block; padding: 6px 8px; border-radius: 6px; color: var(--muted);
  text-decoration: none; font-size: 12.5px;
}
.nav-link:hover { color: var(--text); background: #1a2230; }
.nav-link.active { color: var(--text); background: color-mix(in srgb, var(--accent) 18%, transparent); }
.content { flex: 1; padding: 24px 28px; max-width: 720px; }
.content h1 { font-size: 20px; margin: 0 0 14px; }
.content h2 { font-size: 15px; margin: 22px 0 8px; }
.content p, .content li { color: #c5d0e0; }
.content code, .content pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px;
}
.content pre {
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px;
}
.content code { background: #1a2230; padding: 1px 5px; border-radius: 4px; }