:root {
  --bg: #0c1222;
  --bg-2: #121a2b;
  --card: #172033;
  --line: #314056;
  --text: #e8eef7;
  --muted: #a9b6c9;
  --source: #3b82f6;
  --ingestion: #8b5cf6;
  --queue: #f59e0b;
  --storage: #10b981;
  --processing: #22d3ee;
  --consumer: #f472b6;
  --error: #f87171;
  --retry: #fb923c;
  --ok: #4ade80;
  --focus: #fde68a;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: radial-gradient(1200px 500px at 10% -10%, #1a2744, transparent), var(--bg);
  color: var(--text);
  line-height: 1.55;
}
a { color: #93c5fd; }
a:hover { color: #dbeafe; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 20px; }
header.top {
  position: sticky; top: 0; z-index: 5;
  background: rgba(12, 18, 34, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}
header.top .wrap { display: flex; gap: 16px; align-items: center; justify-content: space-between; padding-top: 12px; padding-bottom: 12px; }
.brand { font-weight: 700; color: var(--text); text-decoration: none; }
nav.top a { margin-right: 12px; text-decoration: none; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0.2em 0; }
h2 { margin-top: 1.6em; }
.lede { font-size: 1.08rem; color: var(--muted); }
.card, .diagram {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  margin: 14px 0;
}
.legend { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; font-size: 0.82rem;
}
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 8px; }
button, .btn {
  background: #243044; color: var(--text); border: 1px solid var(--line);
  border-radius: 8px; padding: 7px 12px; cursor: pointer;
}
button[aria-pressed="true"] { border-color: var(--focus); color: var(--focus); }
label.slider { font-size: 0.85rem; color: var(--muted); display: flex; align-items: center; gap: 8px; }
input[type="range"] { accent-color: var(--source); }
.caption-title { font-weight: 700; }
.caption { min-height: 4.5em; }
.phase { font-size: 0.75rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--retry); }
.phase.fix { color: var(--ok); }
svg.scene { width: 100%; height: auto; background: #0e1626; border-radius: 10px; }
.map {
  position: relative; height: 640px; border: 1px solid var(--line); border-radius: 14px;
  background:
    linear-gradient(to right, rgba(59,130,246,0.08), rgba(244,114,182,0.08)),
    var(--bg-2);
  overflow: hidden;
}
.map-label { position: absolute; color: var(--muted); font-size: 0.8rem; }
.tile {
  position: absolute; width: 148px; transform: translate(-50%, -50%);
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 8px; text-decoration: none; color: var(--text); font-size: 0.82rem;
}
.tile:hover { border-color: var(--focus); }
.pulse {
  width: 8px; height: 8px; border-radius: 50%; background: var(--source);
  box-shadow: 0 0 0 0 rgba(59,130,246,0.7);
  animation: ping 1.8s infinite;
  display: inline-block; margin-right: 4px;
}
@keyframes ping {
  0% { box-shadow: 0 0 0 0 rgba(147,197,253,0.7); }
  100% { box-shadow: 0 0 0 10px rgba(147,197,253,0); }
}
@keyframes flow {
  from { left: 4px; }
  to { left: calc(100% - 20px); }
}
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.family-card { display: block; text-decoration: none; color: inherit; }
.family-card strong { display: block; margin-bottom: 4px; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { border-bottom: 1px solid var(--line); text-align: left; padding: 8px; vertical-align: top; }
.lanes { display: flex; flex-direction: column; gap: 8px; }
.lane { position: relative; height: 28px; background: #0e1626; border-radius: 8px; overflow: hidden; }
.lane span { position: absolute; left: 8px; top: 4px; font-size: 0.78rem; z-index: 1; }
.packet {
  position: absolute; top: 6px; width: 16px; height: 16px; border-radius: 4px; background: var(--source);
}
.warn { color: var(--error); font-weight: 700; }
.ok { color: var(--ok); font-weight: 700; }
.small { color: var(--muted); font-size: 0.88rem; }
footer { color: var(--muted); padding-bottom: 40px; }
@media (max-width: 700px) {
  h1 { font-size: 1.5rem; }
  .map { height: 920px; }
  .tile { width: 130px; }
}
body.reduce-motion .pulse,
body.reduce-motion .packet { animation: none !important; }