* { box-sizing: border-box; }
:root {
  --bg: #0a0e14;
  --surface: #161b22;
  --border: #30363d;
  --text: #c9d1d9;
  --text-dim: #8b949e;
  --text-bright: #f0f6fc;
  --accent: #58a6ff;
  --accent-2: #f78166;
  --green: #3fb950;
  --orange: #d29922;
  --red: #f85149;
  --code-bg: #0d1117;
  --mono: "SF Mono", Monaco, "Cascadia Code", monospace;
}
body {
  font-family: -apple-system, "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  line-height: 1.6;
  font-size: 15px;
}
.layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
nav.sidebar {
  background: linear-gradient(180deg, #161b22 0%, #0d1117 100%);
  border-right: 1px solid var(--border);
  padding: 22px 0; position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.brand {
  padding: 0 22px 18px; border-bottom: 1px solid var(--border); margin-bottom: 14px;
}
.brand .title { font-weight: 700; color: var(--text-bright); font-size: 14px; }
.brand .subtitle { font-size: 11px; color: var(--text-dim); margin-top: 2px; }
.nav-section {
  font-size: 10px; color: var(--text-dim); text-transform: uppercase;
  letter-spacing: 0.8px; padding: 14px 22px 6px;
}
nav.sidebar a {
  display: block; padding: 6px 22px; color: var(--text); text-decoration: none;
  font-size: 13px; border-left: 2px solid transparent;
}
nav.sidebar a:hover { background: rgba(88,166,255,0.08); color: var(--accent); }
nav.sidebar a.active { border-left-color: var(--accent); color: var(--accent); background: rgba(88,166,255,0.05); font-weight: 500; }
nav.sidebar a .num { color: var(--text-dim); font-family: var(--mono); font-size: 10px; margin-right: 6px; }

main {
  padding: 32px 48px 80px; max-width: 920px;
}
h1 {
  color: var(--text-bright); font-size: 28px; font-weight: 600; margin: 0 0 6px;
  display: flex; align-items: center; gap: 14px;
}
.h-num { font-size: 12px; color: var(--text-dim); background: var(--surface); padding: 4px 10px; border-radius: 12px; font-family: var(--mono); }
.h-sub { color: var(--text-dim); font-size: 14px; margin-bottom: 28px; }

h2 { color: var(--accent); font-size: 19px; margin: 32px 0 12px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
h3 { color: var(--text-bright); font-size: 16px; margin: 22px 0 10px; }
h4 { color: var(--text); font-size: 14px; margin: 18px 0 6px; }

p, li { color: var(--text); }
a { color: var(--accent); }
strong { color: var(--text-bright); font-weight: 600; }
code {
  background: var(--code-bg); border: 1px solid var(--border);
  padding: 1px 6px; border-radius: 3px; font-family: var(--mono);
  font-size: 0.9em; color: #79c0ff;
}
pre {
  background: var(--code-bg); border: 1px solid var(--border);
  padding: 14px 16px; border-radius: 6px; overflow-x: auto;
  font-family: var(--mono); font-size: 12px; line-height: 1.5;
  margin: 12px 0;
}
pre code { background: none; border: 0; padding: 0; color: var(--text); }

table { border-collapse: collapse; margin: 14px 0; width: 100%; font-size: 14px; }
th, td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; vertical-align: top; }
th { background: var(--surface); color: var(--text-bright); font-weight: 600; font-size: 13px; }
tr:nth-child(even) td { background: rgba(22,27,34,0.5); }

.callout {
  border-left: 3px solid; padding: 12px 16px; border-radius: 4px;
  margin: 16px 0; background: var(--surface);
}
.callout.info     { border-color: var(--accent); }
.callout.warn     { border-color: var(--orange); }
.callout.danger   { border-color: var(--red); }
.callout.success  { border-color: var(--green); }
.callout-title { font-weight: 600; margin-bottom: 4px; color: var(--text-bright); }

.flux-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 14px; margin: 18px 0; }
.flux-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 14px 18px;
}
.flux-card .num { color: var(--accent); font-family: var(--mono); font-size: 11px; }
.flux-card .name { color: var(--text-bright); font-weight: 600; font-size: 15px; margin: 4px 0 8px; }
.flux-card .desc { color: var(--text-dim); font-size: 13px; }

.kv { display: grid; grid-template-columns: 200px 1fr; gap: 6px 16px; margin: 12px 0; font-size: 14px; }
.kv .k { color: var(--text-dim); font-family: var(--mono); font-size: 13px; }
.kv .v { color: var(--text); }

.diag {
  background: var(--code-bg); border: 1px solid var(--border);
  padding: 18px; border-radius: 6px; margin: 14px 0;
  font-family: var(--mono); font-size: 12px; line-height: 1.7;
  color: var(--text); white-space: pre; overflow-x: auto;
}

.tag { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 11px; font-weight: 600; }
.tag.ok { background: rgba(63,185,80,0.15); color: var(--green); }
.tag.warn { background: rgba(210,153,34,0.15); color: var(--orange); }
.tag.todo { background: rgba(248,81,73,0.15); color: var(--red); }
.tag.info { background: rgba(88,166,255,0.15); color: var(--accent); }

footer {
  margin-top: 40px; padding-top: 18px; border-top: 1px solid var(--border);
  color: var(--text-dim); font-size: 12px; display: flex; justify-content: space-between;
}

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  nav.sidebar { position: static; height: auto; }
  main { padding: 20px; }
  .flux-grid { grid-template-columns: 1fr; }
  .kv { grid-template-columns: 1fr; }
}

@media print {
  .layout { grid-template-columns: 1fr; }
  nav.sidebar { display: none; }
  main { padding: 0; max-width: 100%; }
  body { background: white; color: black; font-size: 12px; }
  pre, code { background: #f6f8fa; color: #24292f; border-color: #d0d7de; }
  h1, h2, h3, h4 { color: black; }
  .callout { background: #f6f8fa; }
  table th { background: #f6f8fa; color: black; }
  page-break-inside: avoid;
}