.pk-rt{
  border:1px solid #e5e5e5;
  border-radius:12px;
  padding:16px;
  background:#fff;
  margin:20px 0;
}

.pk-rt__title{
  margin:0 0 6px;
}

.pk-rt__desc{
  margin:0 0 14px;
  opacity:.8;
}

.pk-rt__card{
  border:1px solid #eee;
  border-radius:12px;
  padding:14px;
  display:flex;
  flex-direction:column;
  gap:12px;
}

.pk-rt__prompt{
  border:1px solid #ddd;
  border-radius:10px;
  padding:2px 12px;
  background:#fafafa;
  word-break:break-word;
}

.pk-rt__prog-top{
  margin-bottom:6px;
  text-align:right;
}

.pk-rt__jp{
  font-size:14px;
  opacity:.8;
  margin-bottom:4px;
}

.pk-rt__en{
  font-size:24px;
  line-height:1.6;
  letter-spacing:.04em;
}

.pk-rt__done{
  opacity:.55;
}

.pk-rt__todo{
  font-weight:800;
}

.pk-rt__input{
  width:100%;
  border:1px solid #ccc;
  border-radius:10px;
  padding:10px 12px;
  font-size:16px;
}

.pk-rt__input[disabled]{
  opacity:.7;
  background:#f5f5f5;
}

.pk-rt__hint{
  opacity:.7;
}

.pk-rt__stats{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}

.pk-rt__stat{
  border:1px solid #eee;
  border-radius:10px;
  padding:8px 10px;
  min-width:120px;
}

.pk-rt__stat span{
  display:block;
  font-size:12px;
  opacity:.7;
}

.pk-rt__stat b{
  font-size:18px;
}

.pk-rt__msg{
  margin:0;
  font-weight:800;
}

.pk-rt__control{
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:nowrap;
}

.pk-rt__control-label{
  font-weight:700;
  white-space:nowrap;
}

.pk-rt__select{
  padding:6px 10px;
  border:1px solid #ccc;
  border-radius:6px;
  background:#fff;
  min-width:120px;
}

.pk-rt__select.is-disabled,
.pk-rt__select:disabled{
  background:#f3f3f3;
  color:#888;
  cursor:not-allowed;
}

.pk-tn__controls{
  display:flex;
  flex-wrap:wrap;
  gap:10px 16px;
}

.pk-rt__kbd{
  border:1px solid #ddd;
  border-radius:12px;
  padding:12px;
  background:#fff;
}

.pk-tn__grid{
  width: 40%;
  max-width: 260px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(5, 48px);
  gap: 8px;
}

.pk-tn__key{
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #ddd;
  border-radius: 10px;
  background: #f7f7f7;
  font-weight: 800;
  font-size: 20px;
  user-select: none;
}

.pk-tn__key--dummy{
  background:#f7f7f7;   /* ← 他キーと同じ */
  border:1px solid #ddd;
  color: transparent;   /* ← 中身見えなくする */
  pointer-events: none; /* ← クリック無効 */
}

.pk-tn__key--dummy-right{
  grid-column: 4;
  grid-row: 4 / span 2;
}

.pk-tn__key--blank{
  background:transparent;
  border:none;
  pointer-events:none;
}

.pk-tn__key--plus{
  grid-column:4;
  grid-row:2 / span 2;
}

.pk-tn__key--zero{
  grid-column:1 / span 2;
}

.mtjHit{
  outline:3px solid rgba(43,116,255,.6);
  box-shadow:0 0 0 4px rgba(43,116,255,.15);
  background:#eef5ff;
}

.mtjMiss{
  outline:3px solid rgba(255,77,79,.7);
  box-shadow:0 0 0 4px rgba(255,77,79,.18);
  background:#fff1f0;
}

.pk-rt__rank{
  font-size:22px;
  font-weight:800;
  display:inline-block;
  padding:2px 10px;
  border-radius:999px;
  line-height:1.2;
}

.pk-rt__rank--s{
  color:#fff;
  background:#d4af37;
}

.pk-rt__rank--a{
  color:#fff;
  background:#e53935;
}

.pk-rt__rank--b{
  color:#fff;
  background:#fb8c00;
}

.pk-rt__rank--c{
  color:#fff;
  background:#43a047;
}

.pk-rt__rank--d{
  color:#fff;
  background:#1e88e5;
}

.pk-rt__rank--e{
  color:#fff;
  background:#757575;
}

.pk-rt__sp-only{
  display:none;
}

@media (max-width:768px){
  .pk-rt__en{
    font-size:20px;
  }

  .pk-rt__stat{
    min-width:calc(50% - 8px);
  }

  .pk-tn__controls{
    flex-direction:column;
    align-items:flex-start;
  }

  .pk-rt__control{
    width:100%;
  }

  .pk-rt__select{
    min-width:0;
    width:100%;
  }

  .pk-tn__grid{
    max-width:280px;
    grid-template-rows:repeat(5, 50px);
  }

  .pk-tn__key{
    font-size:18px;
  }
}

.pk-tn__kbd{
  transform: scale(0.8);   /* ← 好きなサイズに */
  transform-origin: top center;
}

.pk-rt__stats{
  margin-top:-60px;   /* ← 好きなだけ詰める */
}