:root {
  --bg: #0f1420;
  --panel: #171d2b;
  --panel2: #1d2536;
  --border: #2a3348;
  --text: #e7ecf5;
  --muted: #93a0b8;
  --accent: #5b9bff;
  --good: #3ecf8e;
  --warn: #f4b942;
  --crit: #ff5d6c;
  --watch: #8a93a6;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}
header, main, footer { max-width: 1120px; margin: 0 auto; padding: 28px 20px; }
header { padding-bottom: 8px; }
footer { color: var(--muted); font-size: 13px; padding-top: 0; }
h1 { font-size: 28px; line-height: 1.2; margin: 0 0 10px; }
h2 { font-size: 18px; margin: 0 0 8px; }
h3 { font-size: 15px; margin: 0 0 8px; }
.eyebrow { color: var(--accent); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; margin: 0 0 8px; }
.lead { color: var(--muted); max-width: 760px; margin: 0 0 18px; }
nav { display: flex; gap: 8px; flex-wrap: wrap; }
.tab, button.action {
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 14px;
}
.tab.active { border-color: var(--accent); color: var(--accent); }
.hidden { display: none; }
.grid { display: grid; gap: 14px; }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 14px;
}
.card p { margin: 0 0 8px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.kpi { font-size: 26px; font-weight: 700; margin: 6px 0; }
.tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 2px 8px;
  margin-bottom: 8px;
}
.tag.demand { background: rgba(91,155,255,.15); color: var(--accent); }
.tag.budget { background: rgba(244,185,66,.15); color: var(--warn); }
.tag.gold { background: rgba(255,93,108,.15); color: var(--crit); }
.tag.missing { background: rgba(255,93,108,.15); color: var(--crit); }
.tag.one_year { background: rgba(244,185,66,.15); color: var(--warn); }
.tag.observed { background: rgba(62,207,142,.15); color: var(--good); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .04em; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.down { color: var(--crit); }
.up { color: var(--good); }
.bar-row { display: flex; align-items: center; gap: 8px; margin: 7px 0; font-size: 12px; }
.bar-label { width: 210px; flex: 0 0 210px; color: var(--muted); text-align: right; }
.bar-track { flex: 1; background: var(--panel2); border-radius: 6px; height: 16px; overflow: hidden; }
.bar-fill { height: 100%; border-radius: 6px; }
label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
label.check { display: flex; align-items: center; gap: 8px; color: var(--text); }
label.check input { width: auto; margin: 0; }
input[type="range"] { width: 100%; }
input[type="number"], input[type="text"] {
  width: 100%;
  background: var(--panel2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 14px;
}
.eq { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; color: var(--muted); }
.callout { border-left: 3px solid var(--accent); padding-left: 12px; }
.callout.warn { border-left-color: var(--warn); }
.callout.crit { border-left-color: var(--crit); }
.sources a { color: var(--accent); }
ol.steps { margin: 0; padding-left: 18px; }
ol.steps li { margin: 0 0 10px; }
.flow {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) 36px minmax(0, 1fr) 36px minmax(0, 1.05fr) 36px minmax(0, 1fr);
  gap: 8px;
  align-items: stretch;
}
.flow-label {
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 8px;
}
.node {
  background: var(--panel2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  margin: 0 0 8px;
}
.node strong { display: block; font-size: 13px; margin-bottom: 4px; }
.node p { margin: 0; }
.node.live { border-color: var(--good); }
.node.wait { border-style: dashed; }
.node.stop { border-color: var(--crit); }
.node ul { margin: 6px 0 0; padding-left: 16px; }
.flow-arrow { display: flex; align-items: center; }
.flow-arrow span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--border);
  position: relative;
}
.flow-arrow span:after {
  content: "";
  position: absolute;
  right: -1px;
  top: -4px;
  border: 5px solid transparent;
  border-left: 7px solid var(--border);
}
.flow-arrow.on span { background: var(--accent); }
.flow-arrow.on span:after { border-left-color: var(--accent); }
.flow-arrow.break span { background: var(--crit); }
.flow-arrow.break span:after { border-left-color: var(--crit); }
.chain {
  display: flex;
  align-items: stretch;
  gap: 8px;
}
.chain > .node { flex: 1 1 0; margin: 0; }
.chain > .flow-arrow { flex: 0 0 28px; }
.chain.legend > .node { flex: 1 1 180px; }
.read-out { margin-top: 12px; }
.down-arrow { height: 28px; display: flex; justify-content: center; margin: 4px 0; }
.down-arrow span {
  width: 2px;
  height: 100%;
  background: var(--accent);
  position: relative;
}
.down-arrow span:after {
  content: "";
  position: absolute;
  left: -4px;
  bottom: -1px;
  border: 5px solid transparent;
  border-top: 7px solid var(--accent);
}
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 4px; }
button.action { border-radius: 10px; padding: 10px 14px; }
.jobs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-bottom: 14px; }
.jobs.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.job {
  display: block;
  width: 100%;
  text-align: left;
  font: inherit;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  cursor: pointer;
}
.job:hover, .job:focus { border-color: var(--accent); }
.job strong { display: block; font-size: 18px; margin: 6px 0 8px; }
.job .fact { display: block; color: var(--muted); font-size: 14px; }
.step-no { color: var(--accent); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
.split { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr); gap: 14px; align-items: start; }
.answer { position: sticky; top: 12px; }
.answer .kpi { font-size: 40px; line-height: 1.1; margin: 0 0 4px; }
details.fold {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
  margin-bottom: 14px;
}
details.fold > summary { cursor: pointer; font-weight: 700; }
details.fold > summary:hover { color: var(--accent); }
details.fold .card { background: transparent; border: 0; padding: 12px 0 0; margin: 0; }
.sr-arrows { position: absolute; width: 1px; height: 1px; overflow: hidden; }
input[type="text"] { font-size: 16px; }
@media (max-width: 800px) {
  .jobs, .jobs.two, .split { grid-template-columns: 1fr; }
  .answer { position: static; order: -1; }
}
@media (max-width: 980px) {
  .flow, .chain { grid-template-columns: 1fr; }
  .chain { flex-direction: column; }
  .chain > .flow-arrow { flex-basis: 28px; height: 28px; }
  .flow-arrow { height: 28px; }
  .flow-arrow span { width: 2px; height: 100%; margin: 0 auto; }
  .flow-arrow span:after {
    right: auto;
    left: -4px;
    top: auto;
    bottom: -1px;
    border: 5px solid transparent;
    border-top: 7px solid var(--border);
  }
  .flow-arrow.on span:after { border-top-color: var(--accent); border-left-color: transparent; }
  .flow-arrow.break span:after { border-top-color: var(--crit); border-left-color: transparent; }
}
@media (max-width: 720px) {
  h1 { font-size: 22px; }
  .bar-label { width: 120px; flex-basis: 120px; }
  .kpi { font-size: 22px; }
}