:root {
  color-scheme: light;
  --ink: #1c2321;
  --muted: #626b67;
  --line: #dfe4e1;
  --line-strong: #cbd2ce;
  --panel: #fff;
  --page: #f6f7f5;
  --soft: #eef2ef;
  --brand: #285c4d;
  --brand-hover: #1e493d;
  --danger: #9f2f2f;
  --warning: #8a5915;
  --focus: #1769aa;
}

html { scroll-padding-top: 5rem; }
body {
  min-width: 320px;
  padding-top: 4.25rem;
  background: var(--page);
  color: var(--ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.9375rem;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}
a { text-underline-offset: .18em; }
.skip-link {
  position: fixed;
  z-index: 1100;
  top: .5rem;
  left: .75rem;
  padding: .55rem .8rem;
  transform: translateY(-160%);
  border-radius: .25rem;
  background: #fff;
  color: var(--ink);
}
.skip-link:focus { transform: translateY(0); }
.navbar {
  min-height: 4.25rem;
  background: #202724;
  border-bottom: 1px solid rgba(255,255,255,.09);
}
.navbar-brand { font-weight: 680; letter-spacing: -.015em; }
.navbar-dark .navbar-nav .nav-link {
  color: rgba(255,255,255,.72);
  border-radius: .25rem;
}
.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link:focus-visible,
.navbar-dark .navbar-nav .nav-link[aria-current="page"] {
  color: #fff;
  background: rgba(255,255,255,.07);
}
main { max-width: 1600px; }
h1, h2, h3, .h1, .h2, .h3, .h4, .h5, .h6 {
  color: #18201d;
  letter-spacing: -.018em;
  line-height: 1.25;
}
.card, .risk-panel, .rule-step, .trend-summary {
  border: 1px solid var(--line);
  border-radius: .4rem;
  background: var(--panel);
  box-shadow: 0 1px 2px rgba(17,24,20,.025);
}
.card { overflow: clip; }
.metric-label { color: var(--muted); font-size: .8125rem; }
.metric-value {
  margin-top: .15rem;
  font-size: clamp(1.2rem, 2vw, 1.75rem);
  font-weight: 680;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.025em;
}
.metric-note { margin-top: .15rem; color: var(--muted); font-size: .72rem; }
.metric-card-toggle { color: var(--ink); border: 1px solid var(--line); }
.metric-card-toggle:hover, .metric-card-toggle:focus-visible { border-color: var(--brand); background: var(--soft); }
.metric-expand-hint { margin-top: .45rem; color: var(--brand); font-size: .7rem; font-weight: 650; }
.metric-breakdown { margin-top: .45rem; padding: .75rem; border: 1px solid var(--line); border-radius: .35rem; background: #fafbfa; font-size: .75rem; }
.metric-breakdown-row { display: flex; justify-content: space-between; gap: .75rem; }
.metric-breakdown-row + .metric-breakdown-row { margin-top: .3rem; }
.metric-breakdown-row strong { white-space: nowrap; font-variant-numeric: tabular-nums; }
.metric-breakdown-formula { margin-top: .65rem; padding-top: .55rem; border-top: 1px solid var(--line); color: var(--brand); font-weight: 700; font-variant-numeric: tabular-nums; }
.text-muted, .form-text { color: var(--muted) !important; }
.table { --bs-table-striped-bg: #f7f8f7; margin-bottom: 0; }
.table > :not(caption) > * > * { padding: .7rem .65rem; border-bottom-color: var(--line); }
.table th {
  color: var(--muted);
  font-size: .79rem;
  font-weight: 650;
  white-space: nowrap;
}
.table td { font-variant-numeric: tabular-nums; }
.form-label { margin-bottom: .35rem; font-size: .875rem; font-weight: 620; }
.form-control, .form-select {
  min-height: 2.65rem;
  border-color: var(--line-strong);
  border-radius: .32rem;
  color: var(--ink);
}
.form-control:hover, .form-select:hover { border-color: #aeb8b3; }
.form-control:focus, .form-select:focus, .form-check-input:focus {
  border-color: var(--focus);
  box-shadow: 0 0 0 .2rem rgba(23,105,170,.16);
}
.btn {
  min-height: 2.35rem;
  border-radius: .32rem;
  font-weight: 620;
}
.btn-sm { min-height: 2rem; }
.btn-primary { background: var(--brand); border-color: var(--brand); }
.btn-primary:hover, .btn-primary:focus-visible { background: var(--brand-hover); border-color: var(--brand-hover); }
.btn-outline-primary { color: var(--brand); border-color: var(--brand); }
.btn-outline-primary:hover, .btn-outline-primary:focus-visible { background: var(--brand); border-color: var(--brand); }
.btn:focus-visible, a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(23,105,170,.45);
  outline-offset: 2px;
  box-shadow: none;
}
.badge { padding: .35em .55em; font-weight: 620; }
.status-healthy { background: #e2f1e8; color: #205b3b; }
.status-watch { background: #e5f0f5; color: #245a71; }
.status-caution { background: #f6edda; color: #765015; }
.status-danger { background: #f5dfdf; color: #8b2929; }
.status-critical { background: #752323; color: #fff; }
.alert { border-radius: .35rem; border-width: 1px; }
.chart-box { height: 280px; }
.rule-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .75rem;
}
.rule-step { position: relative; min-height: 7rem; padding: .9rem; }
.rule-number {
  display: grid;
  width: 1.5rem;
  height: 1.5rem;
  margin-bottom: .55rem;
  place-items: center;
  border-radius: 50%;
  background: var(--soft);
  color: var(--brand);
  font-size: .75rem;
  font-weight: 750;
}
.rule-stop, .rule-go { margin-top: .4rem; font-size: .75rem; font-weight: 650; }
.rule-stop { color: var(--danger); }
.rule-go { color: var(--brand); }
.rule-toggle { min-width: 8.25rem; }
.trend-summary { display: flex; flex-direction: column; gap: .1rem; padding: .55rem .7rem; background: #fafbfa; }
.trend-summary span { color: var(--muted); font-size: .72rem; }
.trend-summary strong { font-size: clamp(.95rem, 1.4vw, 1.1rem); white-space: nowrap; }
.trend-summary-debt { border-color: #e9cccc; background: #fcf7f7; }
.risk-panel { padding: .9rem; }
.risk-track { position: relative; height: .75rem; margin: .9rem 0 .5rem; border-radius: 1rem; }
.risk-track-maintenance { background: linear-gradient(90deg, #e8c6c6 0 24%, #eadcae 24% 54%, #bcdcc8 54% 100%); }
.risk-track-exposure { background: linear-gradient(90deg, #cbdce7 0 58%, #eadcae 58% 82%, #e8c6c6 82% 100%); }
.risk-marker { position: absolute; top: 50%; width: 4px; height: 1.65rem; transform: translate(-50%,-50%); border-radius: 2px; background: var(--ink); }
.risk-reference { position: absolute; top: -.3rem; width: 2px; height: 1.45rem; border-left: 2px dashed #59645f; }
.risk-reference-target { border-color: #39779d; }
.risk-reference-safe { border-color: #397a52; }
.risk-reference-warning { border-color: #9d6a1b; }
.risk-reference-danger { border-color: var(--danger); }
.risk-scale, .risk-values { color: var(--muted); font-size: .7rem; }
.risk-scale { display: flex; justify-content: space-between; }
.risk-values { display: flex; flex-wrap: wrap; gap: .35rem .75rem; margin-top: .6rem; }
.risk-values span { display: inline-flex; align-items: center; gap: .3rem; white-space: nowrap; }
.risk-values i { width: .5rem; height: .5rem; border-radius: 50%; background: #59645f; }
.risk-values .risk-current i { background: var(--ink); }
.risk-values .risk-target i { background: #39779d; }
.risk-values .risk-safe i { background: #397a52; }
.risk-values .risk-warning i { background: #9d6a1b; }
.risk-values .risk-danger i { background: var(--danger); }
.risk-decision { padding: .55rem .65rem; border-left: 3px solid var(--brand); border-radius: .25rem; background: #f7f9f8; }

@media (max-width: 991.98px) {
  body { padding-top: 3.75rem; }
  .navbar { min-height: 3.75rem; }
  .navbar-collapse { padding: .65rem 0 .35rem; }
  .navbar-nav { gap: .15rem; }
  .navbar-dark .navbar-nav .nav-link { padding: .65rem .75rem; }
  .rule-flow { grid-template-columns: repeat(2, minmax(0,1fr)); }
}
@media (max-width: 575.98px) {
  body { font-size: .9rem; }
  main.container-fluid { padding-right: 1rem !important; padding-left: 1rem !important; }
  .card.p-4 { padding: 1rem !important; }
  .rule-flow { grid-template-columns: 1fr; }
  .chart-box { height: 240px; }
  .table-responsive { margin-inline: -.25rem; }
}
@media (prefers-reduced-motion: no-preference) {
  .btn, .nav-link, .form-control, .form-select, .skip-link {
    transition: color 160ms ease, background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
  }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}