:root {
  color-scheme: dark;
}
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans JP", sans-serif;
  background: #0b0e14;
  color: #e7eaf0;
}
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 18px;
}
h1 { font-size: 20px; margin: 0 0 12px; }
.card {
  background: #121826;
  border: 1px solid #243145;
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 12px;
}
.row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 10px;
  padding: 4px 0;
}
.label { opacity: 0.8; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; }
.actions {
  display: flex;
  gap: 10px;
  margin: 12px 0;
}
button {
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid #314159;
  background: #1b263a;
  color: #e7eaf0;
  cursor: pointer;
}
button:hover { background: #22314a; }
.note {
  opacity: 0.85;
  line-height: 1.6;
  font-size: 13px;
}
pre { white-space: pre-wrap; word-break: break-word; }