.lab-page {
  min-height: 100vh;
  background: var(--paper);
}

.lab-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding-bottom: 32px;
}

.lab-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.back-link {
  color: var(--jade);
  text-decoration: none;
  font-size: 13px;
}

.registry-band {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) 2fr;
  gap: 42px;
  padding: 44px 0 36px;
  border-bottom: 3px solid rgba(56, 104, 93, 0.14);
}

.lab-index {
  margin: 0 0 8px;
  color: var(--brick);
  font-family: Georgia, serif;
  font-size: 10px;
}

.registry-band h1 {
  margin: 0;
  font-family: "Songti SC", SimSun, serif;
  font-size: 30px;
}

.registry-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
}

.registry-item {
  min-height: 58px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: rgba(255, 250, 241, 0.48);
}

.registry-item i {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: #4d9b79;
  box-shadow: 0 0 0 4px rgba(77, 155, 121, 0.12);
}

.registry-item strong,
.registry-item small {
  display: block;
}

.registry-item strong {
  font-size: 12px;
}

.registry-item small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 10px;
}

.lab-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.lab-module {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: rgba(255, 250, 241, 0.65);
}

.lab-module-wide {
  grid-column: span 2;
}

.module-heading {
  min-height: 38px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.module-heading > div {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.module-heading span {
  color: var(--brick);
  font-family: Georgia, serif;
  font-size: 10px;
}

.module-heading h2 {
  margin: 0;
  font-family: "Songti SC", SimSun, serif;
  font-size: 18px;
}

.module-heading output {
  flex: 0 0 auto;
  padding: 4px 7px;
  border: 1px solid rgba(56, 104, 93, 0.22);
  border-radius: 4px;
  color: var(--jade);
  background: rgba(56, 104, 93, 0.05);
  font-size: 10px;
}

.lab-cup-arena {
  width: 100%;
  height: 250px;
  transform: scale(0.76);
  transform-origin: 50% 50%;
  margin: -28px auto -20px;
}

.module-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.module-actions.vertical {
  align-items: stretch;
  flex-direction: column;
}

.module-actions button,
.sound-list button,
.primary-lab-button {
  min-height: 38px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--paper-bright);
  cursor: pointer;
  font-size: 12px;
  transition: border-color 150ms ease, transform 150ms ease, background 150ms ease;
}

.module-actions button.is-selected {
  border-color: rgba(112, 32, 32, 0.55);
  color: var(--red-deep);
  background: rgba(182, 50, 47, 0.08);
  font-weight: 700;
}

.lab-volume {
  display: grid;
  grid-template-columns: 38px 1fr;
  align-items: center;
  gap: 10px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 12px;
}

.lab-volume input {
  width: 100%;
  accent-color: var(--jade);
}

.module-actions button:hover,
.sound-list button:hover,
.primary-lab-button:hover {
  border-color: rgba(182, 50, 47, 0.42);
  transform: translateY(-1px);
}

.primary-lab-button {
  color: #fff;
  border-color: var(--red-deep);
  background: var(--red);
  font-weight: 700;
}

.engine-result {
  min-height: 105px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  margin-bottom: 12px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.engine-result strong {
  font-family: "Songti SC", SimSun, serif;
  font-size: 26px;
}

.engine-result span {
  margin-top: 6px;
  color: var(--muted);
  font-size: 11px;
}

.sound-list {
  display: grid;
  gap: 8px;
}

.sound-list button {
  display: flex;
  align-items: center;
  gap: 9px;
  text-align: left;
}

.sound-list span {
  width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--jade);
  font-family: "Songti SC", SimSun, serif;
}

.lab-history {
  min-height: 150px;
  display: grid;
  align-content: start;
  gap: 6px;
  padding: 0;
  margin: 0 0 12px;
  list-style: none;
}

.lab-history li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 24px;
  padding-bottom: 5px;
  border-bottom: 1px dashed var(--line);
  font-size: 11px;
}

.lab-history span {
  color: var(--muted);
}

.gesture-lab-layout {
  display: grid;
  grid-template-columns: minmax(280px, 1.2fr) 1fr;
  gap: 20px;
  align-items: center;
}

.lab-camera {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 7px;
  background: #171411;
}

.lab-camera video,
.lab-camera canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1);
}

.gesture-control p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.8;
}

.lab-footer {
  padding: 26px 0 0;
  color: var(--muted);
  font-size: 11px;
  text-align: center;
}

@media (max-width: 900px) {
  .registry-band {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .registry-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .lab-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gesture-lab-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .lab-shell {
    width: min(100% - 24px, 1180px);
  }

  .brand-copy small {
    display: none;
  }

  .registry-list,
  .lab-grid {
    grid-template-columns: 1fr;
  }

  .lab-module-wide {
    grid-column: auto;
  }

  .registry-band {
    padding-top: 30px;
  }

  .registry-band h1 {
    font-size: 25px;
  }
}