.kb-wrap {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  margin: 0 0 2rem;
  color: #1f2937;
}

.kb-scroll {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.kb-board {
  display: grid;
  width: 1080px;
  min-width: 1080px;
  box-sizing: border-box;
  grid-template-columns: repeat(92, 1fr);
  grid-template-rows: repeat(6, 46px);
  gap: 4px;
}

.kb-key {
  width: 100%;
  height: 100%;
  border: 1px solid #d1d5db;
  border-radius: 5px;
  background: #f8fafc;
  color: #1f2937;
  font-size: 12px;
  line-height: 1.05;
  cursor: pointer;
  padding: 1px 2px;
  box-sizing: border-box;
}

.kb-key small {
  display: block;
  font-size: 0.82em;
  color: #6b7280;
}

.kb-key.is-down {
  background: #2196F3;
  border-color: #1d4ed8;
  color: #fff;
}
.kb-key.is-down small { color: #dbeafe; }
.kb-key.is-hit:not(.is-down) {
  background: #dbeafe;
  border-color: #93c5fd;
}
.kb-key.is-lock:not(.is-down) {
  box-shadow: inset 0 0 0 2px #16a34a;
}

.kb-status {
  margin: 0.9rem 0 0.35rem;
  font-size: 1rem;
  font-weight: 600;
}

.kb-log {
  margin: 0 0 0.35rem;
  color: #334155;
  font-size: 0.92rem;
  line-height: 1.6;
  word-break: break-all;
}

.kb-tip {
  margin: 0;
  color: #6b7280;
  font-size: 0.88rem;
  line-height: 1.6;
}

.kb-actions { margin: 0.7rem 0 0; }
.kb-clear {
  border: 1px solid #d1d5db;
  background: #fff;
  border-radius: 6px;
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  font-size: 0.85rem;
}

.kb-intro {
  margin-top: 1.3rem;
  color: #64748b;
  font-size: 0.92rem;
  line-height: 1.75;
}
.kb-intro h2 {
  margin: 1rem 0 0.35rem;
  font-size: 1.05rem;
  color: #1e293b;
}
.kb-intro h2:first-child { margin-top: 0; }
.kb-intro p, .kb-intro li { margin: 0; }
.kb-intro p + p, .kb-intro p + ol { margin-top: 0.45rem; }
.kb-intro ol { margin: 0; padding-left: 1.2rem; }
.kb-intro li + li { margin-top: 0.2rem; }