:root {
  --bg: #0b0f14;
  --card: #121926;
  --text: #e7eefc;
  --muted: #a7b4cc;
  --line: rgba(255,255,255,.10);
  --accent: #5da9ff;
  --good: #23c483;
  --warn: #ff9f1a;
  --bad: #ff4d6d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 22px;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 20% 0%, #12203a 0%, var(--bg) 55%);
  color: var(--text);
}

.header {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 18px;
}

h1 { margin: 0; font-size: 26px; }
.subtitle { margin: 6px 0 0; color: var(--muted); max-width: 60ch; }

.badge {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.card {
  background: rgba(18,25,38,0.9);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}

.card.wide { grid-column: 1 / -1; }

h2 { margin: 0 0 12px; font-size: 16px; color: var(--muted); font-weight: 650; letter-spacing: .2px; }

.row {
  display: grid;
  grid-template-columns: 220px 1fr 90px;
  gap: 12px;
  align-items: center;
  margin: 10px 0;
}

label { color: var(--text); font-size: 13px; }
.val { text-align: right; color: var(--muted); font-variant-numeric: tabular-nums; }

input[type="range"] { width: 100%; }

.sep {
  border: none;
  border-top: 1px solid var(--line);
  margin: 14px 0;
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

button {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(93,169,255,.25), rgba(93,169,255,.10));
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 650;
}

button:hover { border-color: rgba(255,255,255,.22); }
button.secondary {
  background: transparent;
  color: var(--muted);
}

code {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
  padding: 2px 6px;
  border-radius: 8px;
}

.hint { color: var(--muted); font-size: 12px; margin-top: 12px; }
.note { color: var(--muted); margin-top: 12px; font-size: 13px; }

.kpi { display: flex; justify-content: space-between; align-items: baseline; padding: 10px 0; border-bottom: 1px solid var(--line); }
.kpi:last-child { border-bottom: none; }
.kpiLabel { color: var(--muted); font-size: 13px; }
.kpiValue { font-size: 18px; font-weight: 750; font-variant-numeric: tabular-nums; }

.mathbox {
  margin-top: 14px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,0.15);
}

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-size: 12px; color: var(--muted); }
.footer { margin-top: 18px; color: var(--muted); font-size: 12px; }

.mcGrid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.mcCard {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  background: rgba(0,0,0,0.12);
}

.mcLabel { color: var(--muted); font-size: 12px; }
.mcValue { font-size: 20px; font-weight: 800; margin-top: 6px; font-variant-numeric: tabular-nums; }
.mcSmall { color: var(--muted); font-size: 12px; margin-top: 4px; }

@media (max-width: 980px) {
  .grid { grid-template-columns: 1fr; }
  .row { grid-template-columns: 1fr; }
  .val { text-align: left; }
  .mcGrid { grid-template-columns: 1fr 1fr; }
}