body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, 'Noto Sans JP', sans-serif; background: #f7f7fb; margin: 0; }
.container { max-width: 900px; margin: 0 auto; padding: 16px; }
.header h1 { margin: 10px 0 6px; }
.idrow { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-bottom: 8px; }
.idrow input { padding: 8px 10px; border: 1px solid #e5e7eb; border-radius: 10px; }
.ghost { background: transparent; border: 1px solid #e5e7eb; color: #111827; padding: 8px 12px; border-radius: 999px; cursor: pointer; }
.card { background: white; border-radius: 12px; padding: 16px; margin-bottom: 16px; border: 1px solid #e5e7eb; }
textarea { width: 100%; height: 260px; font-size: 18px; line-height: 1.5; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Cascadia Mono', monospace; }
.output { background: #0b1220; color: #e5e7eb; padding: 12px; min-height: 260px; border-radius: 8px; border: 1px solid #e5e7eb; font-size: 16px; line-height: 1.5; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Cascadia Mono', monospace; white-space: pre-wrap; }
button { margin-right: 8px; padding: 8px 12px; border-radius: 999px; border: none; background: #111827; color: #fff; cursor: pointer; }
button:hover { opacity: .9; }
.footnote { color: #6b7280; font-size: 12px; }
@media print {
  .buttons { display: none; }
  .card { box-shadow: none; border: none; }
  .header, .footnote { border-bottom: 1px solid #e5e7eb; }
}
.plot-canvas {
  margin-top: 8px;
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid #e5e7eb;
  background: #ffffff;
  display: block;
}