/* ===========================================================
   二年级下册 · 动手实验室公共外观（8 个实验室共用，外壳类名都是 .b1lab-wrap）
   统一规则：课本闯关 = 薄荷绿，思维挑战（.wisdom-mode）= 紫色；
   顶部板块切换、关卡条、题目栏、舞台卡、按钮、反馈条、过关卡、上一关/下一关都以这里为准，
   各实验室自己的 css（b3-lab.css……）只写本章特有的组件，不再改这些公共部分。
   第一章特有的样式也暂时放在本文件后半部分。
   全部作用域收拢在 .b1lab-wrap 内，不污染全局按钮与版式
   =========================================================== */
.b1lab-wrap {
  --b1-mint: #18B28E;
  --b1-mint-dark: #0F8A6D;
  --b1-mint-light: #E6FBF5;
  --b1-grape: #7C5CFA;
  --b1-grape-dark: #5B38DF;
  --b1-grape-light: #EFEAFF;
  --b1-ink: #25303B;
  --b1-ink-soft: #64748B;
  --b1-card-border: #DFD6CA;
  --b1-shadow-card: 0 10px 0 0 #E6DDD0, 0 16px 32px rgba(60, 45, 25, 0.08);
  --b1-shadow-wisdom: 0 10px 0 0 #DDD6FE, 0 16px 32px rgba(65, 40, 130, 0.10);
  color: var(--b1-ink);
  max-width: 920px;
  margin: 0 auto;
  padding: 4px 0 18px;
  user-select: none;
  -webkit-user-select: none;
}

.b1lab-wrap *,
.b1lab-wrap *::before,
.b1lab-wrap *::after {
  box-sizing: border-box;
}

.b1lab-wrap button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

.b1lab-wrap button:focus-visible {
  outline: 3px solid #2563EB;
  outline-offset: 2px;
}

/* 顶部板块切换 + 12 关胶囊导航 */
.b1lab-wrap .lab-nav-card {
  background: #FFFDF9;
  border: 2.5px solid #E5DDD0;
  border-radius: 22px;
  padding: 12px 14px 10px;
  margin-bottom: 14px;
  box-shadow: 0 4px 12px rgba(60, 45, 25, 0.05);
}

.b1lab-wrap.wisdom-mode .lab-nav-card {
  background: #FBF9FF;
  border-color: #DDD6FE;
}

.b1lab-wrap .lab-nav-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.b1lab-wrap .mode-tabs {
  display: inline-flex;
  background: #EFE9E0;
  padding: 4px;
  border-radius: 16px;
  gap: 4px;
}

.b1lab-wrap .mode-tab {
  min-height: 44px;
  padding: 8px 15px;
  border-radius: 12px;
  font-size: 14.5px;
  font-weight: 900;
  color: #5C6470;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background-color 0.18s ease, color 0.18s ease;
  white-space: nowrap;
}

.b1lab-wrap .mode-tab.active-basic {
  background: #FFFFFF;
  color: #0E7C61;
  box-shadow: 0 3px 8px rgba(15, 138, 109, 0.15);
}

.b1lab-wrap .mode-tab.active-wisdom {
  background: #FFFFFF;
  color: #5B38DF;
  box-shadow: 0 3px 8px rgba(91, 56, 223, 0.18);
}

.b1lab-wrap .tab-count {
  font-size: 12px;
  padding: 1px 7px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.06);
}

.b1lab-wrap .lab-prog-pill {
  font-size: 13.5px;
  font-weight: 900;
  color: #0F766E;
  background: #ECFDF5;
  border: 1.5px solid #A7F3D0;
  padding: 6px 12px;
  border-radius: 999px;
}

.b1lab-wrap.wisdom-mode .lab-prog-pill {
  color: #5B21B6;
  background: #F5F3FF;
  border-color: #DDD6FE;
}

.b1lab-wrap .level-strip {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  padding: 2px 2px 4px;
  scrollbar-width: none;
}

.b1lab-wrap .level-strip::-webkit-scrollbar {
  display: none;
}

.b1lab-wrap .lvl-pill {
  min-height: 44px;
  padding: 8px 13px;
  border-radius: 12px;
  font-size: 13.5px;
  font-weight: 800;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: #F1EDE6;
  color: #525E6C;
  border: 1.5px solid transparent;
  transition: transform 0.15s ease, background-color 0.15s ease;
  flex-shrink: 0;
}

.b1lab-wrap .lvl-pill:hover {
  background: #E6E0D6;
}

.b1lab-wrap .lvl-pill.active-basic {
  background: var(--b1-mint);
  color: #FFFFFF;
  box-shadow: 0 3px 0 var(--b1-mint-dark);
}

.b1lab-wrap .lvl-pill.active-wisdom {
  background: var(--b1-grape);
  color: #FFFFFF;
  box-shadow: 0 3px 0 var(--b1-grape-dark);
}

.b1lab-wrap .lvl-pill.done:not(.active-basic):not(.active-wisdom) {
  background: #ECFDF5;
  color: #065F46;
  border-color: #6EE7B7;
}

/* 动物向导题干栏 */
.b1lab-wrap .prompt-bar {
  background: #FFFFFF;
  border: 2.5px solid #E2D9CC;
  border-radius: 22px;
  padding: 14px 18px;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  box-shadow: 0 6px 18px rgba(60, 45, 25, 0.05);
}

.b1lab-wrap.wisdom-mode .prompt-bar {
  border-color: #DDD6FE;
}

.b1lab-wrap .prompt-left {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.b1lab-wrap .npc-avatar {
  width: 52px;
  height: 52px;
  border-radius: 17px;
  background: var(--b1-mint-light);
  border: 2px solid #A7F3D0;
  display: grid;
  place-items: center;
  font-size: 28px;
  flex-shrink: 0;
}

.b1lab-wrap.wisdom-mode .npc-avatar {
  background: var(--b1-grape-light);
  border-color: #C4B5FD;
}

.b1lab-wrap .prompt-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 5px;
  flex-wrap: wrap;
}

.b1lab-wrap .badge-tag {
  font-size: 12.5px;
  font-weight: 900;
  padding: 2px 9px;
  border-radius: 8px;
  background: #D1FAE5;
  color: #065F46;
}

.b1lab-wrap.wisdom-mode .badge-tag {
  background: #EDE9FE;
  color: #5B21B6;
}

.b1lab-wrap .step-tag {
  font-size: 13px;
  font-weight: 800;
  color: var(--b1-ink-soft);
}

.b1lab-wrap .prompt-stem {
  margin: 0;
  font-size: 20px;
  font-weight: 900;
  color: #16202A;
  line-height: 1.48;
  letter-spacing: 0.2px;
}

.b1lab-wrap .prompt-actions {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-shrink: 0;
}

.b1lab-wrap .mini-action-btn {
  min-height: 44px;
  padding: 9px 13px;
  border-radius: 13px;
  background: #F8FAFC;
  border: 2px solid #CBD5E1;
  box-shadow: 0 3px 0 #CBD5E1;
  font-size: 13.5px;
  font-weight: 800;
  color: #334155;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
  transition: transform 0.1s;
}

.b1lab-wrap .mini-action-btn:hover {
  background: #F1F5F9;
}

.b1lab-wrap .mini-action-btn:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 #CBD5E1;
}

/* 实验舞台与操作坞 */
.b1lab-wrap .stage-card {
  background: #FFFFFF;
  border-radius: 26px;
  border: 3px solid var(--b1-card-border);
  box-shadow: var(--b1-shadow-card);
  padding: 18px;
  position: relative;
  overflow: hidden;
}

.b1lab-wrap.wisdom-mode .stage-card {
  border-color: #C4B5FD;
  box-shadow: var(--b1-shadow-wisdom);
}

.b1lab-wrap .visual-arena {
  background: #FAF8F5;
  border: 2px solid #EAE3D9;
  border-radius: 20px;
  padding: 15px;
  position: relative;
}

.b1lab-wrap.wisdom-mode .visual-arena {
  background: #F9F7FF;
  border-color: #E4DFFC;
}

.b1lab-wrap .action-dock {
  margin-top: 15px;
  background: #F8FAFC;
  border: 2px solid #E2E8F0;
  border-radius: 20px;
  padding: 17px 15px;
  text-align: center;
}

.b1lab-wrap .dock-question {
  font-size: 19.5px;
  font-weight: 900;
  color: #16202A;
  line-height: 1.48;
  margin-bottom: 14px;
}

.b1lab-wrap .dock-subhint {
  font-size: 15px;
  font-weight: 800;
  color: #475569;
  line-height: 1.45;
  margin-bottom: 12px;
}

.b1lab-wrap .arena-hint {
  font-size: 13.5px;
  font-weight: 800;
  color: #475569;
  line-height: 1.45;
}

/* 3D 触感按钮 */
.b1lab-wrap .btn-3d {
  min-height: 44px;
  transition: transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.12s ease;
  transform: translateY(0);
}

.b1lab-wrap .btn-3d:hover:not(:disabled) {
  transform: translateY(-2px);
}

.b1lab-wrap .btn-3d:active:not(:disabled) {
  transform: translateY(3px) !important;
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.15) !important;
}

.b1lab-wrap .btn-3d:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.b1lab-wrap .btn-choice {
  min-height: 48px;
  background: #FFFFFF;
  border: 2.5px solid #CBD5E1;
  box-shadow: 0 5px 0 #CBD5E1;
  color: #1E293B;
  border-radius: 16px;
  padding: 12px 15px;
  font-size: 17.5px;
  font-weight: 900;
}

.b1lab-wrap .btn-choice:hover:not(:disabled) {
  border-color: #94A3B8;
  background: #F8FAFC;
}

.b1lab-wrap .btn-choice.selected {
  background: #EFF6FF;
  border-color: #3B82F6;
  box-shadow: 0 5px 0 #2563EB;
  color: #1E3A8A;
}

.b1lab-wrap .btn-primary {
  min-height: 48px;
  background: linear-gradient(180deg, #20C997 0%, #0CA678 100%);
  border: 2px solid #099268;
  box-shadow: 0 5px 0 #087F5B;
  color: #FFFFFF;
  border-radius: 16px;
  padding: 12px 24px;
  font-size: 17px;
  font-weight: 900;
}

.b1lab-wrap .btn-wisdom {
  min-height: 48px;
  background: linear-gradient(180deg, #8B5CF6 0%, #6D28D9 100%);
  border: 2px solid #5B21B6;
  box-shadow: 0 5px 0 #4C1D95;
  color: #FFFFFF;
  border-radius: 16px;
  padding: 12px 24px;
  font-size: 17px;
  font-weight: 900;
}

.b1lab-wrap .btn-tool {
  min-height: 44px;
  background: #FFFFFF;
  border: 2px solid #94A3B8;
  box-shadow: 0 4px 0 #94A3B8;
  color: #334155;
  border-radius: 14px;
  padding: 9px 15px;
  font-size: 14.5px;
  font-weight: 800;
}

/* 拖拽与 SVG 触控 */
.b1lab-wrap .draggable-chip {
  touch-action: none;
  cursor: grab;
  min-height: 44px;
  transition: transform 0.14s ease, box-shadow 0.14s ease;
}

.b1lab-wrap .draggable-chip:hover {
  transform: translateY(-2px);
}

.b1lab-wrap .draggable-chip:active {
  cursor: grabbing;
}

.mp-drag-ghost {
  pointer-events: none !important;
  transition: none !important;
  margin: 0 !important;
  will-change: left, top;
}

.b1lab-wrap .svg-touch {
  touch-action: none;
  display: block;
  width: 100%;
  height: auto;
  margin: 0 auto;
}

.b1lab-wrap .drop-target-ready {
  transition: border-color 0.18s ease, background-color 0.18s ease, box-shadow 0.18s ease;
}

.b1lab-wrap .drop-zone-hover {
  border-color: #10B981 !important;
  background-color: #ECFDF5 !important;
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.22) !important;
}

.b1lab-wrap .svg-road-hit {
  fill: transparent;
  stroke: transparent;
  transition: fill 0.15s ease, stroke 0.15s ease;
}

.b1lab-wrap .svg-road-hit.drop-zone-hover {
  fill: rgba(16, 185, 129, 0.16) !important;
  stroke: #10B981 !important;
  stroke-width: 2.5px !important;
  stroke-dasharray: 6 4;
  background-color: transparent !important;
  box-shadow: none !important;
}

/* 反馈与过关卡 */
.b1lab-wrap .feedback-msg {
  margin-top: 13px;
  padding: 11px 16px;
  border-radius: 14px;
  background: #FFF1F2;
  border: 2px solid #FECDD3;
  color: #BE123C;
  font-size: 15.5px;
  font-weight: 800;
  line-height: 1.5;
  display: inline-block;
  max-width: 680px;
  animation: b1PopIn 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.b1lab-wrap .feedback-msg.hint-warm {
  background: #FFFBEB;
  border-color: #FDE68A;
  color: #92400E;
}

.b1lab-wrap .win-card {
  margin-top: 16px;
  padding: 20px 18px;
  border-radius: 22px;
  background: linear-gradient(180deg, #ECFDF5 0%, #D1FAE5 100%);
  border: 2.5px solid #34D399;
  text-align: center;
  animation: b1PopIn 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

.b1lab-wrap.wisdom-mode .win-card {
  background: linear-gradient(180deg, #F5F3FF 0%, #EDE9FE 100%);
  border-color: #A78BFA;
}

.b1lab-wrap .win-title {
  margin: 6px 0 9px;
  font-size: 20.5px;
  font-weight: 900;
  color: #064E3B;
}

.b1lab-wrap.wisdom-mode .win-title {
  color: #3B0764;
}

.b1lab-wrap .win-explain {
  margin: 0 auto 16px;
  max-width: 640px;
  font-size: 16px;
  font-weight: 700;
  color: #065F46;
  line-height: 1.65;
}

.b1lab-wrap.wisdom-mode .win-explain {
  color: #4C1D95;
}

.b1lab-wrap .win-emoji {
  font-size: 30px;
  line-height: 1;
}

.b1lab-wrap .win-stars {
  display: inline-block;
  margin: 0 auto 12px;
  padding: 4px 14px;
  border-radius: 999px;
  background: #FFF7D6;
  border: 1.5px solid #F5C451;
  color: #8A5A00;
  font-size: 15px;
  font-weight: 900;
}

.b1lab-wrap .win-stars.again {
  background: #F1F5F9;
  border-color: #CBD5E1;
  color: #64748B;
}

.b1lab-wrap .win-all {
  margin: 0 auto 12px;
  font-size: 16px;
  font-weight: 900;
  color: #047857;
}

.b1lab-wrap.wisdom-mode .win-all {
  color: #5B21B6;
}

.b1lab-wrap .win-btns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.b1lab-wrap .footer-nav {
  margin-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4px;
  gap: 8px;
}

.b1lab-wrap .nav-btn {
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 13px;
  background: #FFFFFF;
  border: 2px solid #E2D9CC;
  font-size: 14px;
  font-weight: 800;
  color: #475569;
  box-shadow: 0 2px 0 #E2D9CC;
}

.b1lab-wrap .nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.b1lab-wrap .overlap-stripe {
  background: repeating-linear-gradient(
    45deg,
    #6366F1,
    #6366F1 6px,
    #FBBF24 6px,
    #FBBF24 12px
  );
}

.b1lab-wrap .choices-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: 580px;
  margin: 0 auto;
}

.b1lab-wrap .choices-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 720px;
  margin: 0 auto;
}

.b1lab-wrap .choices-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  max-width: 660px;
  margin: 0 auto;
}

@keyframes b1PopIn {
  0% { transform: scale(0.94) translateY(6px); opacity: 0; }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}

.b1lab-wrap .animate-pop {
  animation: b1PopIn 0.24s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes b1WobbleWarn {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px) rotate(-2deg); }
  75% { transform: translateX(5px) rotate(2deg); }
}

.b1lab-wrap .wobble {
  animation: b1WobbleWarn 0.38s ease-in-out 2;
}

@keyframes b1GiantBoom {
  0% { transform: scale(1); }
  55% { transform: scale(2.35) rotate(-4deg); }
  75% { transform: scale(2.12) rotate(3deg); }
  100% { transform: scale(2.22) rotate(-2deg); }
}

.b1lab-wrap .scale-giant {
  animation: b1GiantBoom 0.55s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes b1TinyShrink {
  0% { transform: scale(1); }
  60% { transform: scale(0.16) rotate(8deg); }
  100% { transform: scale(0.20) rotate(0deg); }
}

.b1lab-wrap .scale-tiny {
  animation: b1TinyShrink 0.48s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

/* ===========================================================
   二年级下册第二章《认识倍》· 专属互动教具组件样式
   =========================================================== */
.b1lab-wrap .b2-row-card {
  background: #FFFFFF;
  border: 2px solid #E5DDD0;
  border-radius: 16px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.b1lab-wrap .b2-row-label {
  min-width: 96px;
  font-size: 15.5px;
  font-weight: 900;
  color: #1E293B;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.b1lab-wrap .b2-row-sub {
  font-size: 12px;
  font-weight: 800;
  color: #0F766E;
  background: #ECFDF5;
  border: 1px solid #A7F3D0;
  border-radius: 999px;
  padding: 1px 8px;
  align-self: flex-start;
}

.b1lab-wrap .b2-token-btn {
  min-width: 52px;
  min-height: 52px;
  padding: 6px 10px;
  border-radius: 14px;
  background: #FFFBEB;
  border: 2.5px solid #FCD34D;
  box-shadow: 0 4px 0 #F59E0B;
  font-size: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.14s ease, background-color 0.14s ease, border-color 0.14s ease;
}

.b1lab-wrap .b2-token-btn.picked {
  background: #DBEAFE;
  border-color: #2563EB;
  box-shadow: 0 4px 0 #1D4ED8, 0 0 0 3px rgba(37, 99, 235, 0.2);
  transform: translateY(-3px);
}

.b1lab-wrap .b2-ring-group {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 11px;
  border-radius: 999px;
  background: #ECFDF5;
  border: 2.5px dashed #10B981;
  position: relative;
}

.b1lab-wrap .b2-ring-badge {
  font-size: 12px;
  font-weight: 900;
  color: #FFFFFF;
  background: #059669;
  padding: 2px 7px;
  border-radius: 999px;
}

.b1lab-wrap .b2-dual-slots {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.b1lab-wrap .b2-slot-card {
  background: #FFFFFF;
  border: 2.5px dashed #94A3B8;
  border-radius: 16px;
  padding: 12px;
  min-height: 98px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
  text-align: left;
}

.b1lab-wrap .b2-slot-card.active-slot {
  border-style: solid;
  border-color: #2563EB;
  background: #EFF6FF;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.b1lab-wrap .b2-slot-card.filled-slot {
  border-style: solid;
  border-color: #10B981;
  background: #F0FDF4;
}

.b1lab-wrap .b2-grid-board {
  display: grid;
  gap: 8px;
  justify-content: center;
  margin: 10px auto;
  touch-action: none;
}

.b1lab-wrap .b2-paint-cell {
  min-width: 56px;
  min-height: 56px;
  border-radius: 13px;
  background: #FFFFFF;
  border: 2.5px solid #CBD5E1;
  box-shadow: inset 0 -3px 0 rgba(148, 163, 184, 0.25);
  touch-action: none;
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 900;
  transition: transform 0.1s ease, background-color 0.12s ease, border-color 0.12s ease;
}

.b1lab-wrap .b2-paint-cell.cell-blue {
  background: linear-gradient(180deg, #60A5FA 0%, #2563EB 100%);
  border-color: #1D4ED8;
  color: #FFFFFF;
  box-shadow: 0 3px 0 #1E40AF;
}

.b1lab-wrap .b2-paint-cell.cell-orange {
  background: linear-gradient(180deg, #FBBF24 0%, #EA580C 100%);
  border-color: #C2410C;
  color: #FFFFFF;
  box-shadow: 0 3px 0 #9A3412;
}

.b1lab-wrap .b2-brush-btn {
  min-height: 46px;
  padding: 8px 15px;
  border-radius: 14px;
  background: #FFFFFF;
  border: 2.5px solid #CBD5E1;
  box-shadow: 0 4px 0 #CBD5E1;
  font-size: 15px;
  font-weight: 900;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.b1lab-wrap .b2-brush-btn.active-brush {
  border-color: #0F172A;
  transform: translateY(-2px);
  box-shadow: 0 5px 0 #0F172A;
  background: #FEF9C3;
}

.b1lab-wrap .b2-clue-bridge {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  align-items: stretch;
}

.b1lab-wrap .b2-clue-box {
  background: #FFFFFF;
  border: 2px solid #E2E8F0;
  border-radius: 16px;
  padding: 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}

@media (max-width: 600px) {
  .b1lab-wrap .stage-card { padding: 12px; border-radius: 20px; }
  .b1lab-wrap .visual-arena { padding: 10px; border-radius: 16px; }
  .b1lab-wrap .action-dock { padding: 13px; border-radius: 16px; }
  .b1lab-wrap .prompt-bar { flex-direction: column; align-items: stretch; padding: 12px 13px; }
  .b1lab-wrap .prompt-actions { justify-content: flex-end; }
  .b1lab-wrap .prompt-stem { font-size: 17.5px; }
  .b1lab-wrap .dock-question { font-size: 17px; margin-bottom: 12px; }
  .b1lab-wrap .dock-subhint { font-size: 14px; }
  .b1lab-wrap .btn-choice { font-size: 15.5px; padding: 10px 12px; }
  .b1lab-wrap .btn-primary,
  .b1lab-wrap .btn-wisdom { font-size: 15.5px; padding: 10px 18px; }
  .b1lab-wrap .feedback-msg { font-size: 14.5px; }
  .b1lab-wrap .win-title { font-size: 18px; }
  .b1lab-wrap .win-explain { font-size: 14.5px; }
  .b1lab-wrap .choices-grid-3 { grid-template-columns: minmax(0, 1fr); }
  .b1lab-wrap .choices-grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .b1lab-wrap .mode-tab { padding: 6px 10px; font-size: 13px; }
  .b1lab-wrap .b2-dual-slots { grid-template-columns: minmax(0, 1fr); }
  .b1lab-wrap .b2-clue-bridge { grid-template-columns: minmax(0, 1fr); }
  .b1lab-wrap .b2-paint-cell { min-width: 48px; min-height: 48px; }
}

@media (prefers-reduced-motion: reduce) {
  .b1lab-wrap *,
  .b1lab-wrap *::before,
  .b1lab-wrap *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}