:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --line: #e2e8f0;
  --blue: #1d4ed8;
  --purple: #7c3aed;
  --ideal: #64748b;
  --scope: #c2410c;
  --ok: #047857;
  --bad: #b91c1c;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 "Segoe UI", "Liberation Sans", system-ui, sans-serif;
}
body { min-height: 100%; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 12px 16px 20px; }
header {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 12px;
}
h1 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 0;
}
.sub { color: var(--muted); font-size: 0.9rem; margin-top: 2px; }
.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
label { color: var(--muted); font-size: 0.9rem; }
select, button {
  font: inherit;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 10px;
}
button { cursor: pointer; }
button:hover { background: #f1f5f9; }
.toggle { display: flex; align-items: center; gap: 6px; user-select: none; }
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
  margin: 8px 0 14px;
}
.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
}
.stat .k { color: var(--muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: .03em; }
.stat .v { font-size: 1.15rem; font-weight: 650; margin-top: 2px; }
.stat .v.blue { color: var(--blue); }
.stat .v.purple { color: var(--purple); }
.stat .v.bad { color: var(--bad); }
.stat .v.ok { color: var(--ok); }
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 10px 4px;
  margin-bottom: 12px;
}
.panel h2 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  margin: 4px 8px 0;
}
.panel canvas { width: 100% !important; height: 260px !important; }
.note, .error, .gate {
  color: var(--muted);
  font-size: 0.8rem;
  margin-top: 8px;
}
.error { color: var(--bad); background: #fef2f2; border: 1px solid #fecaca; border-radius: 8px; padding: 10px 12px; }
.gate { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 24px; text-align: center; }
.methods { color: var(--muted); font-size: 0.8rem; margin: 4px 0 0; }
@media (max-width: 700px) {
  .wrap { padding: 10px; }
  .panel canvas { height: 220px !important; }
  h1 { font-size: 1.1rem; }
}