:root {
  --bg: #0b1020;
  --panel: #11182d;
  --panel-2: #17213b;
  --text: #e7ecf7;
  --muted: #9fb0d0;
  --accent: #7c9cff;
  --accent-2: #65e0c8;
  --line: rgba(255,255,255,0.08);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(180deg, #09101f, #0d1325 30%, #0b1020);
  color: var(--text);
}
.appShell { min-height: 100vh; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px 0;
}
.languageToggle {
  display: inline-flex;
  gap: 8px;
  background: rgba(8, 13, 26, 0.88);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px;
  position: sticky;
  top: 16px;
  z-index: 10;
}
.langBtn {
  border: 0;
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
  font-weight: 700;
  letter-spacing: .04em;
}
.langBtn.active {
  background: rgba(124,156,255,0.2);
  color: var(--text);
}
.app { display: grid; grid-template-columns: 360px 1fr; min-height: calc(100vh - 56px); }
.sidebar {
  border-right: 1px solid var(--line);
  background: rgba(8, 13, 26, 0.88);
  backdrop-filter: blur(12px);
  padding: 20px;
  position: sticky; top: 0; height: calc(100vh - 56px); overflow-y: auto;
}
.content { padding: 28px; }
.brand h1 { margin: 8px 0; font-size: 1.8rem; }
.brand p { color: var(--muted); line-height: 1.5; }
.badge {
  display: inline-block; padding: 6px 10px; border-radius: 999px;
  background: rgba(124,156,255,0.14); color: #bfd0ff; font-size: 12px; letter-spacing: .03em;
}
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 18px 0 20px; }
.stat, .card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; }
.stat { padding: 12px; }
.statValue { font-size: 1.2rem; font-weight: 700; }
.statLabel { color: var(--muted); font-size: .85rem; margin-top: 4px; }
.searchWrap input {
  width: 100%; border: 1px solid var(--line); background: var(--panel-2); color: var(--text);
  border-radius: 12px; padding: 12px 14px; margin-bottom: 18px;
}
section h2 { margin: 18px 0 10px; font-size: .9rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.navList { display: flex; flex-direction: column; gap: 8px; }
.navItem {
  width: 100%; text-align: left; background: var(--panel); color: var(--text); border: 1px solid var(--line);
  border-radius: 14px; padding: 12px; cursor: pointer;
}
.navItem:hover, .navItem.active { border-color: rgba(124,156,255,0.45); background: rgba(124,156,255,0.08); }
.navTitleRow { display: flex; align-items: center; gap: 8px; margin-bottom: 4px; }
.navTitle { display: block; font-weight: 600; }
.navPath { display: block; color: var(--muted); font-size: .82rem; }
.miniBadge {
  display: inline-flex; align-items: center; padding: 2px 8px; border-radius: 999px;
  background: rgba(101,224,200,0.12); color: var(--accent-2); font-size: .7rem; font-weight: 700;
}
.hero { padding: 24px; margin-bottom: 18px; }
.hero p, .hero li { color: var(--muted); line-height: 1.6; }
.viewer { display: flex; flex-direction: column; gap: 16px; }
.docHeader, .metaCard, .markdownBody { padding: 20px; }
.docHeaderBadges { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.subtleBadge { background: rgba(101,224,200,0.12); color: var(--accent-2); }
.docPath { color: var(--muted); margin-top: 6px; font-size: .9rem; }
.fallbackNote { color: var(--accent-2); margin: 10px 0 0; }
.docGrid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px; }
.markdownBody { line-height: 1.7; }
.markdownBody h1, .markdownBody h2, .markdownBody h3 { margin-top: 1.2em; }
.markdownBody a { color: #9cc3ff; }
.markdownBody code { background: rgba(255,255,255,0.06); padding: 2px 6px; border-radius: 6px; }
.markdownBody pre { overflow-x: auto; background: #0a1122; padding: 14px; border-radius: 12px; }
@media (max-width: 980px) {
  .topbar { padding: 16px 16px 0; }
  .app { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; }
  .docGrid { grid-template-columns: 1fr; }
}