:root {
  --bg: #0b0f14;
  --panel: #121826;
  --text: #e6edf3;
  --muted: #9aa4b2;
  --link: #8ab4f8;
  --border: #263042;
}

* { box-sizing: border-box; }

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

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

.topbar {
  position: sticky;
  top: 0;
  background: rgba(11,15,20,0.9);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px;
  backdrop-filter: blur(8px);
}

.brand a { font-weight: 700; }
.sep { margin: 0 8px; color: var(--muted); }
.wk { color: var(--muted); }

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  min-height: calc(100vh - 50px);
}

.sidebar {
  border-right: 1px solid var(--border);
  background: var(--panel);
  padding: 16px;
  overflow-y: auto;
}

.content {
  padding: 24px;
  max-width: 1000px;
}

.navblock { margin-bottom: 18px; }
.navtitle { font-weight: 700; margin-bottom: 8px; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .06em; }

.nav, .subnav { list-style: none; padding-left: 0; margin: 0; }
.nav > li { margin-bottom: 8px; }
.subnav { padding-left: 12px; margin-top: 6px; border-left: 1px solid var(--border); }

.nav a, .subnav a { display: block; padding: 6px 8px; border-radius: 8px; }
.nav a.active, .subnav a.active { background: rgba(138,180,248,0.12); }

.page h1, .page h2, .page h3 { margin-top: 1.2em; }
.page p, .page li { line-height: 1.55; }

.page pre {
  background: #0f1522;
  border: 1px solid var(--border);
  padding: 12px;
  border-radius: 10px;
  overflow-x: auto;
}

.page code {
  background: rgba(154,164,178,0.12);
  padding: 2px 6px;
  border-radius: 6px;
}

.pager {
  display: flex;
  gap: 12px;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.pager-btn {
  display: inline-block;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(255,255,255,0.02);
}

.page img {
  display: block;
  max-width: 320px;
  width: 100%;
  height: auto;
  object-fit: contain;
  background: transparent;
  padding: 0;
  border-radius: 12px;
  margin: 18px 0 22px 0;
  border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}