/* 比手畫腳頁專用樣式；共用元件沿用 site.css */
.ch-stage { background: #fff; border-radius: 12px; padding: 4px 0; }
.ch-stage:fullscreen { display: flex; flex-direction: column; justify-content: center; padding: 24px; overflow: auto; }
.ch-stage [hidden] { display: none !important; }
.ch-tabs4 { grid-template-columns: repeat(4, 1fr); }
.ch-tabs3 { grid-template-columns: repeat(3, 1fr); }
.ch-label { margin: 14px 0 4px; font-weight: 600; font-size: 1rem; }
.ch-big { text-align: center; font-size: clamp(1.6rem, 7vw, 2.4rem); font-weight: 800; color: var(--brand-dark); margin: 12px 0 4px; }
.ch-board { text-align: center; font-size: 1.1rem; font-weight: 600; margin: 8px 0; overflow-wrap: anywhere; }
.ch-bar { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; font-weight: 700; }
.ch-time { font-variant-numeric: tabular-nums; font-size: 2.2rem; font-weight: 800; color: var(--brand-dark); line-height: 1.2; }
.ch-time.ch-low { color: var(--bad); }
.ch-word { text-align: center; font-weight: 800; line-height: 1.25; margin: 14px 0; padding: 16px 6px; border: 3px solid var(--brand); border-radius: 16px; background: #eff4ff; font-size: min(6rem, 17vw, calc((100vw - 90px) / var(--len, 4))); white-space: nowrap; min-height: 2.6em; display: flex; align-items: center; justify-content: center; }
.ch-stats { text-align: center; font-size: 1.05rem; margin: 4px 0; }
.ch-ctl { display: flex; flex-wrap: wrap; gap: 10px; margin: 10px 0; }
.ch-ctl .btn { flex: 1 1 140px; min-height: 60px; font-size: 1.25rem; }
.ch-ok { background: var(--ok); border-color: var(--ok); color: #fff; }
.ch-stage:fullscreen .ch-word { font-size: min(18vw, 34vh, calc((100vw - 90px) / var(--len, 4))); }
@media (orientation: landscape) and (max-height: 540px) {
  .ch-word { font-size: min(14vw, 26vh, calc((100vw - 90px) / var(--len, 4))); margin: 6px 0; padding: 6px; min-height: 0; }
  .ch-time { font-size: 1.7rem; }
  .ch-ctl .btn { min-height: 48px; font-size: 1.1rem; }
}
@media (max-width: 480px) {
  .ch-tabs4 { grid-template-columns: repeat(4, 1fr); }
  .ch-tabs4 button, .ch-tabs3 button { font-size: .95rem; }
}