:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --fg: #1c1e21;
  --muted: #5f6672;
  --border: #e3e6ea;
  --accent: #5b4cdb;
  --accent-soft: #efedfc;
  --code-bg: #f3f4f7;
  --code-fg: #24292f;
  --pre-bg: #16181d;
  --pre-fg: #e6e8ec;
  --sidebar-w: 248px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --bg-soft: #181b20;
    --fg: #e6e8ec;
    --muted: #9aa1ad;
    --border: #2a2e36;
    --accent: #a59cff;
    --accent-soft: #24213d;
    --code-bg: #1f232a;
    --code-fg: #e6e8ec;
    --pre-bg: #0b0d10;
    --pre-fg: #e6e8ec;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 var(--font);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.shell { display: flex; min-height: 100vh; }

.sidebar {
  position: sticky;
  top: 0;
  flex: 0 0 var(--sidebar-w);
  height: 100vh;
  overflow-y: auto;
  padding: 24px 16px;
  background: var(--bg-soft);
  border-right: 1px solid var(--border);
}
.sidebar .brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--fg); font-weight: 650; font-size: 15px; white-space: nowrap; margin: 0 8px 24px;
}
.sidebar .brand:hover { text-decoration: none; }
.logo {
  display: inline-grid; place-items: center;
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--accent); color: var(--bg); font-weight: 800;
}
.tag {
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .06em;
  color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 0 6px;
}
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li a {
  display: block; padding: 6px 10px; border-radius: 6px; color: var(--muted); font-size: 15px;
}
.sidebar li a:hover { color: var(--fg); background: var(--border); text-decoration: none; }
.sidebar li a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.sidebar .meta { margin: 24px 10px 0; font-size: 12px; color: var(--muted); }

.topbar { display: none; }

main { flex: 1; min-width: 0; }
.prose { max-width: 820px; padding: 40px 48px 96px; }
.reference { padding: 0; }
.ref-fallback { padding: 40px 48px; }

.prose h1 { font-size: 2rem; line-height: 1.25; margin: 0 0 16px; letter-spacing: -0.01em; }
.prose h2 { font-size: 1.4rem; margin: 48px 0 12px; padding-top: 8px; border-top: 1px solid var(--border); }
.prose h3 { font-size: 1.1rem; margin: 32px 0 8px; }
.prose h2, .prose h3 { position: relative; scroll-margin-top: 16px; }
.anchor { position: absolute; left: -1.1em; opacity: 0; color: var(--muted); font-weight: 400; }
h2:hover .anchor, h3:hover .anchor { opacity: 1; text-decoration: none; }
.prose p, .prose ul, .prose ol { margin: 0 0 16px; }
.prose li { margin: 4px 0; }
.prose blockquote {
  margin: 0 0 16px; padding: 10px 16px;
  border-left: 3px solid var(--accent); background: var(--accent-soft); border-radius: 0 6px 6px 0;
}
.prose blockquote p:last-child { margin-bottom: 0; }

.prose code {
  font: 0.875em/1.5 var(--mono);
  background: var(--code-bg); color: var(--code-fg);
  padding: 0.1em 0.35em; border-radius: 4px;
}
.code { position: relative; margin: 0 0 20px; }
.code .lang {
  position: absolute; top: 6px; right: 10px;
  font: 11px var(--mono); color: #8b93a1; text-transform: uppercase; letter-spacing: .05em;
}
.prose pre {
  margin: 0; padding: 16px 18px; overflow-x: auto;
  background: var(--pre-bg); color: var(--pre-fg);
  border-radius: 8px; border: 1px solid var(--border);
}
.prose pre code { background: none; color: inherit; padding: 0; font-size: 13.5px; line-height: 1.6; }

.prose table { width: 100%; border-collapse: collapse; margin: 0 0 20px; font-size: 15px; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: 8px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
.prose th { font-weight: 600; background: var(--bg-soft); }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 32px 0; }

@media (max-width: 860px) {
  .topbar {
    display: flex; align-items: center; gap: 12px;
    position: sticky; top: 0; z-index: 20;
    padding: 10px 16px; background: var(--bg-soft); border-bottom: 1px solid var(--border);
  }
  .topbar .brand { color: var(--fg); font-weight: 650; }
  .menu {
    font: inherit; font-size: 14px; color: var(--fg);
    background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 4px 10px;
  }
  .sidebar {
    display: none; position: fixed; z-index: 10; top: 49px; left: 0; right: 0;
    height: auto; max-height: calc(100vh - 49px); border-right: 0; border-bottom: 1px solid var(--border);
  }
  .sidebar .brand { display: none; }
  .nav-open .sidebar { display: block; }
  .prose { padding: 24px 16px 64px; }
  .ref-fallback { padding: 24px 16px; }
  .anchor { display: none; }
}