:root {
  --bg: #f7f3ea;
  --bg-alt: #efe9dc;
  --bg-card: #fffdf8;
  --border: #e2d9c8;
  --text: #2c2823;
  --text-dim: #756c5d;
  --accent: #e0590c;
  --accent-2: #1f6feb;
  --green: #1a7f37;
  --yellow: #9a6700;
  --red: #cf222e;
  --purple: #8250df;
  --code-bg: #ece5d6;
  --pre-bg: #f3eddf;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 15px;
}

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

/* Sidebar */
.sidebar {
  width: 256px;
  flex-shrink: 0;
  background: var(--bg-alt);
  border-right: 1px solid var(--border);
  padding: 24px 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sidebar .brand {
  display: flex; align-items: center; gap: 10px;
  padding: 0 22px 18px; margin-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.sidebar .brand .logo {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #ff4d6d);
  display: grid; place-items: center; font-weight: 800; color: #fff; font-size: 18px;
}
.sidebar .brand b { font-size: 16px; letter-spacing: .2px; }
.sidebar .brand span { display:block; font-size: 11px; color: var(--text-dim); font-weight: 400; }
.sidebar nav { padding: 12px 12px 0; }
.sidebar nav .group { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--text-dim); padding: 16px 10px 6px; }
.sidebar nav a {
  display: flex; align-items:center; gap: 10px;
  color: var(--text-dim); text-decoration: none;
  padding: 8px 10px; border-radius: 7px; font-size: 14px; margin-bottom: 2px;
}
.sidebar nav a:hover { background: #e7dfcd; color: var(--text); }
.sidebar nav a.active { background: #e9e1cf; color: var(--text); box-shadow: inset 2px 0 0 var(--accent); font-weight: 600; }
.sidebar nav a .ico { width: 18px; text-align:center; opacity:.7; }

/* Main */
.main { flex: 1; min-width: 0; }
.content { max-width: 980px; margin: 0 auto; padding: 40px 44px 90px; }

h1 { font-size: 30px; margin: 0 0 6px; letter-spacing: -.4px; }
h2 { font-size: 21px; margin: 40px 0 12px; padding-bottom: 7px; border-bottom: 1px solid var(--border); }
h3 { font-size: 16px; margin: 26px 0 8px; color: var(--text); }
.subtitle { color: var(--text-dim); font-size: 15px; margin: 0 0 8px; }
p { margin: 10px 0; }
a { color: var(--accent-2); }
code { font-family: var(--mono); background: var(--code-bg); padding: 1.5px 6px; border-radius: 5px; font-size: 12.5px; color: #43321f; }
pre { background: var(--pre-bg); border: 1px solid var(--border); border-radius: 9px; padding: 16px; overflow-x: auto; font-family: var(--mono); font-size: 12.5px; line-height: 1.5; color: var(--text); }
pre code { background: none; padding: 0; color: inherit; }
hr { border: none; border-top: 1px solid var(--border); margin: 32px 0; }

/* Tables */
table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 13.5px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--text-dim); font-weight: 700; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; background: var(--bg-alt); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #f6f1e6; }
td code { font-size: 12px; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px,1fr)); gap: 16px; margin: 20px 0; }
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 11px; padding: 18px; text-decoration: none; color: var(--text); display: block; transition: border-color .15s, box-shadow .15s; box-shadow: 0 1px 2px rgba(80,64,40,.04); }
a.card:hover { border-color: var(--accent); box-shadow: 0 3px 10px rgba(80,64,40,.08); }
.card .k { font-size: 12px; color: var(--text-dim); text-transform: uppercase; letter-spacing: .05em; }
.card .v { font-size: 26px; font-weight: 700; margin: 4px 0 2px; }
.card h3 { margin: 0 0 6px; font-size: 15px; }
.card p { margin: 0; font-size: 13px; color: var(--text-dim); }

/* Badges */
.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 11.5px; font-weight: 600; line-height: 1.5; }
.b-crit { background: rgba(207,34,46,.10); color: #b42318; border: 1px solid rgba(207,34,46,.30); }
.b-high { background: rgba(154,103,0,.12); color: #8a5a00; border: 1px solid rgba(154,103,0,.30); }
.b-med  { background: rgba(31,111,235,.10); color: #1a5fd0; border: 1px solid rgba(31,111,235,.28); }
.b-low  { background: rgba(110,100,85,.12); color: #5c5448; border: 1px solid rgba(110,100,85,.28); }
.b-ok   { background: rgba(26,127,55,.12); color: #1a7f37; border: 1px solid rgba(26,127,55,.30); }
.b-tag  { background: var(--code-bg); color: var(--text-dim); border: 1px solid var(--border); }

/* Callouts */
.callout { border: 1px solid var(--border); border-left-width: 4px; border-radius: 9px; padding: 14px 18px; margin: 18px 0; background: var(--bg-card); }
.callout.crit { border-left-color: var(--red); background: #fdf3f2; }
.callout.warn { border-left-color: var(--yellow); background: #fbf6e9; }
.callout.info { border-left-color: var(--accent-2); background: #f1f5fd; }
.callout.ok { border-left-color: var(--green); background: #f0f7f1; }
.callout .t { font-weight: 700; margin-bottom: 4px; }
.callout p { margin: 4px 0; }

/* Diagram */
.diagram { background: #fcfaf4; border: 1px solid var(--border); border-radius: 11px; padding: 26px; overflow-x: auto; margin: 20px 0; }
.node { fill: #ffffff; stroke: #d8cfbe; }
.node-accent { fill: #fdeee2; stroke: var(--accent); }
.node-warn { fill: #fbf3d6; stroke: var(--yellow); }
.flow-label { fill: #2c2823; font: 600 13px -apple-system, sans-serif; }
.flow-sub { fill: #756c5d; font: 11px var(--mono); }
.flow-edge { stroke: #a99f8b; stroke-width: 1.5; fill: none; marker-end: url(#arrow); }
.flow-edge-txt { fill: #756c5d; font: 11px -apple-system, sans-serif; }

.meta-row { display:flex; gap: 8px; flex-wrap: wrap; margin: 8px 0 18px; }
.crumb { color: var(--text-dim); font-size: 13px; margin-bottom: 18px; }
.crumb a { color: var(--text-dim); }
ul.tight { margin: 8px 0; } ul.tight li { margin: 3px 0; }
.foot { color: var(--text-dim); font-size: 12.5px; border-top: 1px solid var(--border); margin-top: 50px; padding-top: 16px; }

@media (max-width: 820px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: static; }
  .content { padding: 24px 18px 60px; }
}