.nb-root, .nb-root * { box-sizing: border-box; }
.nb-root [hidden] { display: none !important; }
.nb-root {
  --ink: #1a1c3a;
  --paper: #f4f6ff;
  --field: #dfe6ff;
  --dot: #c3cffa;
  --veil: rgba(223, 230, 255, 0.92);
  --pink: #ff6fa8;
  --amber: #ffb627;
  --mint: #2ec4a6;
  --sky: #4d8cff;
  --violet: #a66cff;
  --f-display: "Dela Gothic One", "Hiragino Sans", "Yu Gothic", sans-serif;
  --f-body: "Zen Maru Gothic", "Hiragino Maru Gothic ProN", "Hiragino Sans", "Yu Gothic", sans-serif;
  color-scheme: dark;
  display: block;
  max-width: 440px;
  margin: 1.5em auto;
  padding: 14px 16px 18px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 20px;
  font-family: var(--f-body);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  text-align: left;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.nb-root .nb-hud { display: grid; grid-template-columns: repeat(4, 1fr); align-items: end; gap: 6px; padding-inline: 4px; }
.nb-root .nb-hud > div { min-width: 0; white-space: nowrap; }
.nb-root .nb-c { text-align: center; }
.nb-root .nb-end { text-align: right; }
.nb-root .nb-label { font-size: 11px; letter-spacing: 0.1em; opacity: 0.7; margin: 0 0 4px; color: var(--paper); }
.nb-root .nb-num { font-family: var(--f-display); font-size: 22px; line-height: 1; font-variant-numeric: tabular-nums; color: var(--paper); }
.nb-root .nb-num small { font-family: var(--f-body); font-size: 11px; margin-left: 2px; opacity: 0.8; }

.nb-root .nb-gauge { display: flex; align-items: center; gap: 8px; margin-top: 10px; padding-inline: 4px; font-size: 11px; letter-spacing: 0.1em; color: var(--paper); }
.nb-root .nb-bar { flex: 1; height: 6px; border-radius: 999px; background: rgba(244, 246, 255, 0.22); overflow: hidden; }
.nb-root .nb-bar i { display: block; height: 100%; width: 0; background: var(--paper); border-radius: 999px; }
.nb-root .nb-gauge.soon .nb-bar i { background: var(--amber); }
.nb-root #nb-gsec { min-width: 2ch; text-align: right; font-variant-numeric: tabular-nums; }

.nb-root .nb-fx { display: flex; flex-wrap: wrap; gap: 6px; min-height: 24px; margin-top: 8px; padding-inline: 4px; align-content: flex-start; }
.nb-root .nb-chip { font-size: 12px; font-weight: 700; line-height: 1; background: var(--paper); color: var(--ink); border-radius: 999px; padding: 5px 10px; font-variant-numeric: tabular-nums; }

.nb-root .nb-stage {
  position: relative;
  width: min(100%, max(240px, calc((100vh - 170px) * 0.6429)));
  width: min(100%, max(240px, calc((100svh - 170px) * 0.6429)));
  aspect-ratio: 360 / 560;
  margin: 10px auto 0;
  border-radius: 12px;
  background: var(--field);
  overflow: hidden;
  box-shadow: 0 0 0 4px var(--paper);
  touch-action: pan-y;
}
.nb-root.nb-playing .nb-stage { touch-action: none; }
.nb-root canvas.nb-cv { position: absolute; inset: 0; display: block; width: 100%; height: 100%; max-width: none; margin: 0; padding: 0; border: 0; }

.nb-root .nb-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 20px;
  text-align: center;
  background: var(--veil);
  color: var(--ink);
  overflow: auto;
}
.nb-root .nb-overlay > * { margin: 0; }
.nb-root .nb-eyebrow { font-size: 12px; letter-spacing: 0.2em; font-weight: 700; }
.nb-root .nb-title { font-family: var(--f-display); font-weight: 400; font-size: clamp(24px, 8cqw, 36px); font-size: 30px; line-height: 1.15; color: var(--ink); }
.nb-root .nb-lead { font-size: 14px; line-height: 1.7; max-width: 24em; }
.nb-root .nb-result .nb-label { color: var(--ink); opacity: 0.75; margin: 0 0 4px; }
.nb-root .nb-big { font-family: var(--f-display); font-size: 52px; line-height: 1; font-variant-numeric: tabular-nums; }
.nb-root .nb-big small { font-family: var(--f-body); font-size: 16px; margin-left: 4px; }
.nb-root .nb-sub { margin-top: 10px; font-size: 14px; font-weight: 700; }
.nb-root .nb-record { display: inline-block; margin-top: 10px; padding: 4px 12px; background: var(--amber); border: 2px solid var(--ink); border-radius: 999px; font-weight: 700; font-size: 13px; }
.nb-root .nb-btn {
  appearance: none;
  -webkit-appearance: none;
  width: auto;
  margin: 0;
  font-family: var(--f-display);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0;
  text-transform: none;
  color: var(--ink);
  background: var(--pink);
  border: 3px solid var(--ink);
  border-radius: 12px;
  padding: 12px 32px;
  box-shadow: 0 5px 0 var(--ink);
  cursor: pointer;
  transition: transform 0.08s, box-shadow 0.08s;
}
.nb-root .nb-btn:hover { background: var(--pink); color: var(--ink); }
.nb-root .nb-btn:active { transform: translateY(3px); box-shadow: 0 2px 0 var(--ink); }
.nb-root .nb-btn:focus-visible { outline: 3px solid var(--sky); outline-offset: 3px; }
.nb-root .nb-hint { font-size: 12px; line-height: 1.7; opacity: 0.8; max-width: 25em; }
.nb-root .nb-note { margin-top: 8px; font-size: 12px; text-align: center; opacity: 0.8; }
@media (prefers-reduced-motion: reduce) { .nb-root .nb-btn { transition: none; } }