/* 儿童数学大冒险 - iPad横屏专属清晰大字版 */

:root {
  --primary-color: #FF6B8B;
  --primary-shadow: #D94565;
  --secondary-color: #4ECDC4;
  --secondary-shadow: #2FA9A0;
  --accent-yellow: #FFD166;
  --accent-yellow-shadow: #E0A638;
  --accent-purple: #9B5DE5;
  --accent-purple-shadow: #763BB5;
  --accent-blue: #48CAE4;
  --accent-blue-shadow: #219EBC;
  --bg-gradient: linear-gradient(135deg, #FFF6E9 0%, #E8F8F5 50%, #F3E8FF 100%);
  --card-bg: #FFFFFF;
  --text-main: #1E293B;
  --text-muted: #64748B;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Quicksand", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  width: 100%;
  height: 100%;
  height: 100dvh;
  overflow: hidden;
  touch-action: manipulation;
}

body {
  font-family: var(--font-family);
  background: var(--bg-gradient);
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

/* 顶部漂浮可爱云朵 */
.cloud {
  position: fixed;
  background: rgba(255, 255, 255, 0.75);
  border-radius: 50px;
  pointer-events: none;
  z-index: 0;
  animation: floatCloud linear infinite;
}

.cloud-1 {
  width: 150px;
  height: 44px;
  top: 6%;
  left: -160px;
  animation-duration: 45s;
}

.cloud-2 {
  width: 220px;
  height: 58px;
  top: 20%;
  left: -240px;
  animation-duration: 65s;
  animation-delay: 15s;
}

.cloud-3 {
  width: 130px;
  height: 40px;
  top: 75%;
  left: -140px;
  animation-duration: 55s;
  animation-delay: 8s;
}

@keyframes floatCloud {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(100vw + 300px)); }
}

/* 主游戏容器 (专为 iPad 横屏打造，全局无滚动条) */
.game-container {
  width: 100%;
  max-width: 1220px;
  height: 100%;
  height: 100dvh;
  padding: max(8px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(8px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-sizing: border-box;
}

/* 顶栏信息 (字体增大，布局饱满) */
.header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.95);
  padding: 8px 18px;
  border-radius: 20px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
  backdrop-filter: blur(8px);
  margin-bottom: 8px;
  border: 2.5px solid #FFF;
  flex-shrink: 0;
}

.game-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.game-logo .logo-emoji {
  font-size: 32px;
  animation: bounceSoft 2s infinite ease-in-out;
  line-height: 1;
}

.game-logo h1 {
  font-size: 23px;
  color: #FF5E7E;
  font-weight: 900;
  letter-spacing: 0.5px;
  text-shadow: 1px 1px 0px #FFE0E6;
  line-height: 1.1;
}

.game-logo .logo-sub {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 700;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 状态药丸胶囊 (大号字体) */
.stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 16px;
  font-weight: 900;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.star-pill {
  background: #FFF7DB;
  color: #D97706;
  border: 2px solid #FCD34D;
}

.star-pill .star-icon {
  font-size: 19px;
  animation: spinSlow 6s infinite linear;
}

.streak-pill {
  background: #FFE8E8;
  color: #DC2626;
  border: 2px solid #FECACA;
}

/* 糖果功能按钮 */
.candy-btn {
  border: none;
  outline: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 15px;
  font-weight: 800;
  padding: 7px 14px;
  border-radius: 18px;
  transition: all 0.12s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  position: relative;
  touch-action: manipulation;
}

.candy-btn:active {
  transform: translateY(2px) !important;
}

.btn-secondary {
  background: #F1F5F9;
  color: #475569;
  border: 2px solid #CBD5E1;
}

.btn-secondary.off {
  opacity: 0.6;
}

.btn-reward {
  background: #9B5DE5;
  color: white;
  box-shadow: 0 3px 0 #763BB5;
}

.btn-reward:hover {
  background: #AA6EF7;
}

.btn-reward:active {
  box-shadow: 0 1px 0 #763BB5;
}

.btn-info {
  background: #E0F2FE;
  color: #0369A1;
  border: 2px solid #BAE6FD;
}

.btn-voice-role {
  background: linear-gradient(135deg, #FCE7F3 0%, #EDE9FE 100%);
  color: #9D174D;
  border: 2px solid #F9A8D4;
  box-shadow: 0 2px 0 #F472B6;
}

.btn-voice-role:hover {
  background: linear-gradient(135deg, #FBCFE8 0%, #DDD6FE 100%);
}

.btn-voice-role:active {
  box-shadow: 0 0 0 #F472B6;
}

.badge-tag {
  background: #FF5E7E;
  color: white;
  font-size: 11px;
  font-weight: 800;
  border-radius: 12px;
  padding: 1px 7px;
  margin-left: 3px;
}

/* 8大关卡模式导航栏 (单排8格，清晰大字) */
.mode-navigation {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 8px;
  margin-bottom: 8px;
  flex-shrink: 0;
}

.mode-nav-btn {
  background: white;
  border: 2.5px solid #E2E8F0;
  border-radius: 16px;
  padding: 7px 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.03);
  touch-action: manipulation;
}

.mode-nav-btn .mode-icon {
  font-size: 24px;
  transition: transform 0.2s;
  line-height: 1;
}

.mode-nav-btn .mode-title {
  font-size: 14.5px;
  font-weight: 800;
  color: #64748B;
  white-space: nowrap;
}

.mode-nav-btn:hover {
  transform: translateY(-2px);
  border-color: #CBD5E1;
}

.mode-nav-btn.active {
  background: linear-gradient(135deg, #FFF2F4 0%, #FFE5E9 100%);
  border-color: #FF6B8B;
  box-shadow: 0 4px 12px rgba(255, 107, 139, 0.25);
  transform: translateY(-1px);
}

.mode-nav-btn.active .mode-icon {
  transform: scale(1.15);
}

.mode-nav-btn.active .mode-title {
  color: #FF5E7E;
}

.mode-nav-btn.sprint-nav-btn {
  border-color: #FCD34D;
  background: #FFFBEB;
}

.mode-nav-btn.sprint-nav-btn.active {
  border-color: #F59E0B;
  background: #FEF3C7;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.mode-nav-btn.sprint-nav-btn.active .mode-title {
  color: #D97706;
}

/* 60秒冲刺 HUD 悬浮指示条 */
.speedrun-hud {
  display: none;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(135deg, #FFF7ED 0%, #FFEDD5 100%);
  border: 2.5px solid #F97316;
  border-radius: 16px;
  padding: 10px 18px 6px;
  margin-bottom: 8px;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.15);
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
  animation: popIn 0.3s ease;
}

.speedrun-progress-track {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: rgba(249, 115, 22, 0.18);
}

.speedrun-progress-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #10B981, #F59E0B);
  transition: width 0.95s linear, background 0.3s ease;
}

.speedrun-progress-fill.danger {
  background: linear-gradient(90deg, #EF4444, #DC2626);
}

.speedrun-hud-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 800;
  color: #9A3412;
}

.speedrun-hud-item .hud-val {
  font-size: 22px;
  font-weight: 900;
  color: #EA580C;
}

.speedrun-timer-badge {
  font-size: 26px !important;
  color: #DC2626 !important;
  animation: pulseScale 1s infinite;
}

/* 吉祥物小狐狸提示区 (大字清晰) */
.mascot-assistant-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #FFFFFF;
  border-radius: 18px;
  padding: 6px 16px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.03);
  margin-bottom: 8px;
  border: 2px solid #F1F5F9;
  flex-shrink: 0;
}

.mascot-avatar {
  font-size: 34px;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
  animation: bounceSoft 2.5s infinite ease-in-out;
  line-height: 1;
}

.mascot-speech-bubble {
  flex: 1;
  background: #FFFBEB;
  border: 2px solid #FDE68A;
  border-radius: 14px;
  padding: 6px 14px;
  color: #B45309;
  font-weight: 800;
  font-size: 16.5px;
  line-height: 1.35;
  position: relative;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mascot-speech-bubble::before {
  content: '';
  position: absolute;
  left: -8px;
  top: 50%;
  transform: translateY(-50%);
  border-width: 6px 8px 6px 0;
  border-style: solid;
  border-color: transparent #FDE68A transparent transparent;
}

.difficulty-selector {
  display: flex;
  align-items: center;
  gap: 5px;
  background: #F8FAFC;
  padding: 3px;
  border-radius: 14px;
  border: 1px solid #E2E8F0;
  flex-shrink: 0;
}

.diff-btn {
  border: none;
  background: transparent;
  padding: 5px 12px;
  border-radius: 10px;
  font-size: 13.5px;
  font-weight: 800;
  color: #64748B;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
  user-select: none;
}

.diff-btn.active {
  background: #4ECDC4;
  color: white;
  box-shadow: 0 2px 6px rgba(78, 205, 196, 0.35);
}

/* 核心题目主板 (高度自适应，绝不滚动) */
.game-stage-card {
  background: white;
  border-radius: 26px;
  padding: 14px 20px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
  border: 3.5px solid #FFFFFF;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* 彻底禁止题目卡片内出现任何滚动条 */
.game-stage-card,
.game-stage-card * {
  scrollbar-width: none !important;
  -ms-overflow-style: none !important;
}

.game-stage-card::-webkit-scrollbar,
.game-stage-card *::-webkit-scrollbar {
  display: none !important;
  width: 0 !important;
  height: 0 !important;
}

/* 题目大标题 (醒目大号字) */
.question-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 6px;
  width: 100%;
  flex-shrink: 0;
}

.question-text {
  font-size: 26px;
  font-weight: 900;
  color: #0F172A;
  text-align: center;
  line-height: 1.25;
}

.question-text .tip-sub {
  font-size: 16px;
  color: #94A3B8;
  font-weight: 700;
  display: inline-block;
  margin-left: 8px;
}

.speak-icon-btn {
  background: #FEF3C7;
  border: 2px solid #FDE68A;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 0 #F59E0B;
  transition: transform 0.1s;
  flex-shrink: 0;
}

.speak-icon-btn:active {
  transform: translateY(2px);
  box-shadow: 0 0 0 #F59E0B;
}

/* 题目呈现交互区 (居中自适应，无滚动) */
.question-zone {
  width: 100%;
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  overflow: visible;
}

/* 1. 数一数模式网格 (无任何滚动条，自适应展开) */
.counting-board {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px 16px;
  max-width: min(960px, 94%);
  overflow: visible;
  padding: 12px 20px;
  background: #F0FDF4;
  border: 2.5px dashed #86EFAC;
  border-radius: 22px;
}

.counting-board.counting-grid-10 {
  display: grid;
  grid-template-columns: repeat(10, auto);
  gap: 10px 12px;
  justify-items: center;
}

.countable-item {
  width: min(8vh, 66px);
  height: min(8vh, 66px);
  font-size: min(5vh, 42px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: 18px;
  cursor: pointer;
  position: relative;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.05);
  border: 2px solid #E2E8F0;
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.countable-item:hover {
  transform: scale(1.1);
}

.countable-item.counted {
  border-color: #34D399;
  background: #ECFDF5;
  transform: scale(1.05);
}

.count-bubble {
  position: absolute;
  top: -7px;
  right: -7px;
  background: #10B981;
  color: white;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: 15px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(16, 185, 129, 0.4);
  animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* 分组数数 (2个一数/5个一数) */
.grouped-counting-board {
  gap: 12px 18px;
  max-width: min(980px, 96%);
}

.counting-group-box {
  background: white;
  border: 2.5px solid #38BDF8;
  border-radius: 18px;
  padding: 6px 14px;
  cursor: pointer;
  box-shadow: 0 3px 6px rgba(0,0,0,0.04);
  transition: all 0.15s;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 145px;
  position: relative;
}

.counting-group-box:hover {
  transform: translateY(-2px);
  border-color: #0284C7;
}

.counting-group-box.counted {
  background: #F0F9FF;
  border-color: #0284C7;
}

.counting-group-box .group-tag {
  font-size: 13px;
  color: #0284C7;
  font-weight: 800;
  margin-bottom: 2px;
}

.counting-group-box .group-items {
  font-size: 26px;
  letter-spacing: 2px;
}

/* 2. 比大小模式天平 (大号算式与数字) */
.balance-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  width: 100%;
  transition: transform 0.35s ease;
}

.balance-container.tilt-left .left-plate {
  transform: translateY(10px);
  border-color: #10B981;
  background: #ECFDF5;
}

.balance-container.tilt-left .right-plate {
  transform: translateY(-8px);
}

.balance-container.tilt-right .right-plate {
  transform: translateY(10px);
  border-color: #10B981;
  background: #ECFDF5;
}

.balance-container.tilt-right .left-plate {
  transform: translateY(-8px);
}

.scale-plate {
  flex: 1;
  max-width: 280px;
  background: #F8FAFC;
  border: 2.5px solid #E2E8F0;
  border-radius: 22px;
  padding: 14px 18px;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  cursor: pointer;
  transition: all 0.25s ease;
}

.scale-plate:hover {
  border-color: #93C5FD;
}

.plate-expr {
  font-size: 42px;
  font-weight: 900;
  color: #2563EB;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 1px;
}

.plate-dots {
  font-size: 16px;
  letter-spacing: 2px;
  margin-top: 4px;
  min-height: 22px;
}

.plate-hint-val {
  font-size: 16px;
  font-weight: 800;
  color: #059669;
  margin-top: 4px;
}

.scale-middle {
  display: flex;
  align-items: center;
  justify-content: center;
}

.mystery-box {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: #FEF3C7;
  border: 3.5px dashed #F59E0B;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  color: #B45309;
  animation: pulseScale 1.8s infinite;
}

.alligator-open {
  width: 72px;
  height: 72px;
  border-radius: 20px;
  background: #D1FAE5;
  border: 3px solid #10B981;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 44px;
  font-weight: 900;
  color: #065F46;
}

/* 3. 算术算式展示 (特大号清晰算式 + 凑十破十小妙招提示) */
.arithmetic-card-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 36px;
  background: #F8FAFC;
  border: 2.5px solid #E2E8F0;
  border-radius: 26px;
}

.big-formula-text {
  font-size: min(8vh, 58px);
  font-weight: 900;
  color: #1E293B;
  letter-spacing: 2px;
}

.arithmetic-strategy-pill {
  background: #EFF6FF;
  border: 1.5px solid #BFDBFE;
  color: #1D4ED8;
  font-size: 15px;
  font-weight: 800;
  padding: 6px 16px;
  border-radius: 16px;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s;
}

.arithmetic-strategy-pill:hover {
  transform: scale(1.03);
  background: #DBEAFE;
}

.blank-box {
  display: inline-block;
  min-width: 58px;
  height: 58px;
  line-height: 52px;
  background: #FEF3C7;
  border: 3px dashed #F59E0B;
  border-radius: 16px;
  color: #D97706;
  text-align: center;
  margin: 0 6px;
  vertical-align: middle;
  font-size: 46px;
  transition: all 0.25s ease;
}

.blank-box.filled-correct {
  background: #D1FAE5;
  border: 3px solid #10B981;
  color: #065F46;
}

/* 4. 找规律小火车 */
.train-track-container {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 10px;
  padding: 14px 10px;
  background: linear-gradient(to bottom, transparent 80%, #94A3B8 80%, #94A3B8 88%, #64748B 88%);
  border-radius: 20px;
  width: auto;
  max-width: 100%;
  max-height: min(24vh, 140px);
  overflow: visible;
  transition: transform 0.5s ease;
}

.train-track-container.train-chug {
  animation: trainDepart 1.4s ease-in-out;
}

.train-engine {
  position: relative;
  font-size: 52px;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1;
}

.engine-smoke {
  font-size: 20px;
  position: absolute;
  top: -22px;
  left: 12px;
  animation: floatSmoke 2s infinite ease-in;
}

.train-car {
  background: #FFF;
  border: 3px solid #3B82F6;
  border-radius: 16px;
  padding: 8px 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 66px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.06);
  position: relative;
}

.train-car .car-cargo {
  font-size: 32px;
  font-weight: 900;
  color: #1E293B;
  line-height: 1.1;
}

.train-car.target-car {
  border: 3px dashed #F59E0B;
  background: #FEF3C7;
}

.train-car.completed-car {
  border: 3px solid #10B981;
  background: #ECFDF5;
  animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.train-car .mystery-q {
  font-size: 32px;
  color: #D97706;
  animation: bounceSoft 1s infinite alternate;
}

.wheels {
  display: flex;
  gap: 18px;
  margin-top: 5px;
}

.wheel {
  width: 12px;
  height: 12px;
  background: #334155;
  border-radius: 50%;
  border: 2px solid #CBD5E1;
}

/* 5. 十格阵 (Ten-Frame) 样式：大号蒙氏教具风格，超大清晰 */
.ten-frame-stage-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  max-height: 100%;
}

.ten-frame-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px;
  max-height: 100%;
  flex: 1;
}

.dual-ten-frame-wrapper {
  display: flex;
  align-items: center;
  gap: 20px;
  justify-content: center;
  max-height: 100%;
  width: 100%;
  flex: 1;
}

.ten-frame-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.frame-label {
  font-size: 15px;
  font-weight: 800;
  color: #1E293B;
  background: #F1F5F9;
  padding: 5px 14px;
  border-radius: 14px;
  border: 1.5px solid #CBD5E1;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
  user-select: none;
}

.frame-plus {
  font-size: 40px;
  font-weight: 900;
  color: #8B5CF6;
  text-shadow: 0 2px 8px rgba(139, 92, 246, 0.25);
  margin-top: 28px;
  user-select: none;
}

.ten-frame {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-template-rows: repeat(2, 1fr);
  gap: 8px;
  background: #FFFFFF;
  border: 4px solid #334155;
  border-radius: 20px;
  padding: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

/* 双盒模式下的格子尺寸：大幅放大至 66px */
.dual-ten-frame-wrapper .ten-frame-cell {
  width: clamp(50px, 6.2vw, 66px);
  height: clamp(50px, 6.2vw, 66px);
  font-size: clamp(32px, 4.2vw, 42px);
}

/* 单盒模式下的格子尺寸：超大特写 86px */
.single-frame .ten-frame-cell {
  width: clamp(70px, 9vw, 86px);
  height: clamp(70px, 9vw, 86px);
  font-size: clamp(44px, 5.5vw, 54px);
}

.ten-frame-cell {
  background: #F8FAFC;
  border: 3px solid #CBD5E1;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s, border-color 0.15s;
  user-select: none;
  position: relative;
}

.ten-frame-cell:hover, .ten-frame-cell:active {
  transform: scale(1.06);
  background: #EFF6FF;
}

.ten-frame-cell.user-filled {
  background: #FEF9C3;
  border-color: #F59E0B;
}

.ten-frame-cell.taken-cell {
  background: #FEE2E2;
  border-color: #FCA5A5;
  border-style: dashed;
}

.ten-dot {
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.ten-dot.empty-dot {
  opacity: 0.55;
}

.ten-dot.taken-dot {
  opacity: 0.32;
  filter: grayscale(0.4);
}

/* 6. 认识时钟 (Clock) 样式 (大号表盘数字与指针) */
.analog-clock-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  max-height: 100%;
  justify-content: center;
  flex: 1;
}

.analog-clock-svg {
  height: min(39vh, 285px);
  width: auto;
  aspect-ratio: 1;
  filter: drop-shadow(0 8px 22px rgba(15, 23, 42, 0.12));
  transition: all 0.3s ease;
}

.clock-face-outer {
  fill: #F8FAFC;
  stroke: #334155;
  stroke-width: 8;
}

.clock-face-inner {
  fill: #FFFFFF;
  stroke: #CBD5E1;
  stroke-width: 2;
}

.clock-num {
  font-family: inherit;
  font-size: 20px;
  font-weight: 900;
  fill: #0F172A;
}

.clock-min-num {
  font-family: inherit;
  font-size: 9px;
  font-weight: 800;
  fill: #EF4444;
  opacity: 0.85;
}

.clock-hand {
  stroke-linecap: round;
}

.hour-hand {
  stroke: #2563EB;
  stroke-width: 9;
}

.minute-hand {
  stroke: #EF4444;
  stroke-width: 6;
}

.clock-center-pin {
  fill: #F59E0B;
  stroke: #B45309;
  stroke-width: 1.5;
}

.clock-legend {
  display: flex;
  gap: 20px;
  font-size: 15.5px;
  font-weight: 800;
  background: #F8FAFC;
  padding: 6px 18px;
  border-radius: 20px;
  border: 1px solid #E2E8F0;
  user-select: none;
}

.legend-hour {
  color: #2563EB;
}

.legend-minute {
  color: #EF4444;
}

/* 7. 空间数积木 (3D 互动旋转模型) 样式：全屏自适应画布、360° 可拖拽旋转 */
.isometric-blocks-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  height: 100%;
  max-height: 100%;
  min-height: 0;
  flex: 1;
  overflow: hidden;
}

.blocks-3d-stage-wrap {
  position: relative;
  flex: 1 1 0;
  min-height: 0;
  width: min(88%, 680px);
  max-height: min(41vh, 330px);
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 50% 45%, #FFFBEB 0%, #F8FAFC 78%);
  border: 2.5px solid #E2E8F0;
  border-radius: 24px;
  padding: 0;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.03), 0 6px 20px rgba(15, 23, 42, 0.06);
  overflow: hidden;
}

.blocks-3d-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  touch-action: none;
  user-select: none;
}

.blocks-3d-canvas.grabbing {
  cursor: grabbing;
}

.blocks-rotate-hint {
  position: absolute;
  top: 12px;
  right: 16px;
  background: rgba(255, 255, 255, 0.92);
  border: 1.5px solid #CBD5E1;
  color: #475569;
  font-size: 13.5px;
  font-weight: 800;
  padding: 5px 14px;
  border-radius: 14px;
  pointer-events: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.blocks-controls-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  flex-shrink: 0;
}

.block-counter-pill {
  background: #FEF3C7;
  border: 2px solid #FCD34D;
  color: #B45309;
  font-size: 15px;
  font-weight: 900;
  padding: 6px 14px;
  border-radius: 20px;
}

.xray-toggle-btn {
  font-size: 15px;
  font-weight: 800;
  padding: 6px 18px;
  border-radius: 20px;
  background: #FFF7ED;
  color: #C2410C;
  border: 2px solid #FDBA74;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.12);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  user-select: none;
}

.xray-toggle-btn:hover, .xray-toggle-btn:active {
  transform: translateY(-2px);
  background: #FFEDD5;
}

.xray-toggle-btn.spin-3d-btn {
  background: #EFF6FF;
  color: #1D4ED8;
  border-color: #93C5FD;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.12);
}

.xray-toggle-btn.spin-3d-btn:hover, .xray-toggle-btn.spin-3d-btn:active {
  background: #DBEAFE;
}

/* 选项区域 (特大号选项文字，清晰有力，自适应水平居中) */
.options-zone {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: 860px;
  margin-bottom: 6px;
  flex-shrink: 0;
}

.option-card {
  flex: 1 1 0;
  max-width: 200px;
  min-width: 0;
  height: min(11vh, 82px);
  background: white;
  border: 3.5px solid #E2E8F0;
  box-shadow: 0 6px 0 #CBD5E1;
  border-radius: 22px;
  cursor: pointer;
  font-family: inherit;
  font-size: min(6.5vh, 44px);
  font-weight: 900;
  color: #1E293B;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: all 0.12s ease;
  touch-action: manipulation;
}

.options-zone.has-3-options .option-card,
.option-card.balance-option-btn {
  max-width: 240px;
}

.option-card:hover:not(:disabled) {
  transform: translateY(-3px);
  border-color: #38BDF8;
  box-shadow: 0 9px 0 #7DD3FC;
}

.option-card:active:not(:disabled) {
  transform: translateY(3px);
  box-shadow: 0 2px 0 #CBD5E1;
}

.option-card.correct {
  background: #10B981 !important;
  color: white !important;
  border-color: #059669 !important;
  box-shadow: 0 6px 0 #047857 !important;
  animation: correctBounce 0.5s ease;
}

.option-card.wrong {
  background: #FEE2E2 !important;
  border-color: #F87171 !important;
  color: #DC2626 !important;
  animation: wobble 0.4s ease;
}

.option-card.disabled-opt {
  opacity: 0.35;
  pointer-events: none;
}

.balance-option-btn {
  font-size: 28px;
}

.balance-option-btn .big-symbol {
  font-size: 36px;
  color: #2563EB;
}

.balance-option-btn .sub-label {
  font-size: 15px;
  color: #64748B;
  font-weight: 800;
}

.emoji-option-btn {
  font-size: 40px;
}

/* 反馈提示区域 */
.feedback-zone {
  height: 36px;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feedback-badge {
  padding: 6px 22px;
  border-radius: 22px;
  font-size: 17.5px;
  font-weight: 900;
  display: flex;
  align-items: center;
  gap: 8px;
}

.feedback-badge.success {
  background: #D1FAE5;
  color: #065F46;
  border: 2px solid #6EE7B7;
}

.feedback-badge.retry {
  background: #FEF3C7;
  color: #92400E;
  border: 2px solid #FCD34D;
}

/* 弹窗通用样式 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(5px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-overlay.active {
  display: flex;
}

.modal-card {
  background: white;
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  border-radius: 28px;
  padding: 26px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
  border: 4px solid #FFF;
  position: relative;
  text-align: center;
  animation: popIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.close-modal-btn {
  position: absolute;
  top: 14px;
  right: 16px;
  width: 38px;
  height: 38px;
  background: #F1F5F9;
  border-radius: 50%;
  border: none;
  font-size: 22px;
  color: #64748B;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.close-modal-btn:hover {
  background: #E2E8F0;
  color: #0F172A;
}

.modal-title {
  font-size: 24px;
  font-weight: 900;
  color: #1E293B;
  margin-bottom: 6px;
}

.modal-subtitle {
  font-size: 15px;
  color: #64748B;
  margin-bottom: 16px;
}

/* 扭蛋机内部展示 */
.egg-display-box {
  background: #F8FAFC;
  border: 3px dashed #CBD5E1;
  border-radius: 22px;
  padding: 22px;
  min-height: 190px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.egg-shell {
  font-size: 64px;
  animation: bounceSoft 2s infinite ease-in-out;
}

.egg-animated {
  font-size: 72px;
  animation: spinSlow 0.6s infinite linear;
}

.rolling-text {
  font-size: 16px;
  font-weight: 800;
  color: #8B5CF6;
  margin-top: 10px;
}

.prize-card {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.prize-badge {
  background: #FEF3C7;
  color: #B45309;
  font-size: 13px;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 16px;
  margin-bottom: 8px;
}

.prize-emoji {
  font-size: 72px;
  margin-bottom: 6px;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.15));
}

.prize-name {
  font-size: 22px;
  font-weight: 900;
  color: #1E293B;
}

.prize-title {
  font-size: 14.5px;
  color: #8B5CF6;
  font-weight: 800;
}

.draw-action-btn {
  width: 100%;
  background: linear-gradient(135deg, #FF6B8B 0%, #FF8E53 100%);
  color: white;
  border: none;
  font-size: 18px;
  font-weight: 900;
  padding: 14px 20px;
  border-radius: 22px;
  box-shadow: 0 5px 0 #D94565;
  cursor: pointer;
  transition: all 0.15s ease;
}

.draw-action-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 7px 0 #D94565;
}

.draw-action-btn:active:not(:disabled) {
  transform: translateY(3px);
  box-shadow: 0 2px 0 #D94565;
}

.draw-action-btn:disabled {
  background: #CBD5E1;
  box-shadow: none;
  cursor: not-allowed;
  color: #94A3B8;
}

/* 60秒冲刺结算卡片 */
.sprint-summary-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin: 14px 0 22px;
}

.sprint-rank {
  font-size: 28px;
  font-weight: 900;
  color: #EA580C;
}

.new-record-badge {
  background: linear-gradient(135deg, #FEF3C7, #FDE68A);
  color: #B45309;
  font-size: 15px;
  font-weight: 900;
  padding: 5px 16px;
  border-radius: 18px;
  border: 2px solid #F59E0B;
  animation: pulseScale 1.2s infinite;
}

.sprint-score-pill, .sprint-stars-pill {
  font-size: 17px;
  color: #334155;
  background: #FFF7ED;
  padding: 8px 18px;
  border-radius: 20px;
  border: 2px solid #FED7AA;
  font-weight: 800;
}

/* 贴纸乐园 Tab 导航 */
.sticker-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 14px;
}

.sticker-tab-btn {
  background: #F1F5F9;
  border: 2px solid #E2E8F0;
  border-radius: 16px;
  padding: 7px 18px;
  font-size: 14.5px;
  font-weight: 800;
  color: #64748B;
  cursor: pointer;
  transition: all 0.15s;
}

.sticker-tab-btn.active {
  background: #9B5DE5;
  color: white;
  border-color: #763BB5;
  box-shadow: 0 3px 8px rgba(155, 93, 229, 0.3);
}

.sticker-tab-panel {
  display: none;
}

.sticker-tab-panel.active {
  display: block;
}

/* 贴纸图鉴网格 (iPad横屏 6 列) */
.stickers-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  max-height: 330px;
  overflow-y: auto;
  padding: 6px;
}

.sticker-grid-item {
  background: #F8FAFC;
  border: 2px solid #E2E8F0;
  border-radius: 18px;
  padding: 10px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  transition: all 0.18s;
}

.sticker-grid-item.unlocked {
  background: #FFF;
  border-color: #FCD34D;
  box-shadow: 0 3px 8px rgba(251, 191, 36, 0.15);
}

.sticker-grid-item.unlocked:hover {
  transform: scale(1.06);
  border-color: #F59E0B;
}

.sticker-grid-item.locked {
  opacity: 0.55;
  background: #F1F5F9;
  cursor: default;
}

.sticker-icon {
  font-size: 34px;
  margin-bottom: 3px;
}

.sticker-lbl {
  font-size: 12.5px;
  font-weight: 800;
  color: #1E293B;
  white-space: nowrap;
}

.sticker-tag {
  font-size: 10.5px;
  color: #64748B;
}

/* 贴纸创意游乐场画布 */
.playground-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.playground-toolbar .sub-explain {
  font-size: 13px;
  font-weight: 700;
  color: #64748B;
}

.playground-actions {
  display: flex;
  gap: 6px;
}

.candy-btn.btn-sm {
  font-size: 12.5px;
  padding: 4px 10px;
  border-radius: 12px;
}

.sticker-playground-canvas {
  width: 100%;
  height: 230px;
  border-radius: 22px;
  background: linear-gradient(to bottom, #BAE6FD 0%, #E0F2FE 55%, #86EFAC 55%, #4ADE80 100%);
  position: relative;
  overflow: hidden;
  border: 3px solid #7DD3FC;
  margin-bottom: 10px;
  transition: background 0.4s ease;
}

.sticker-playground-canvas.theme-meadow {
  background: linear-gradient(to bottom, #BAE6FD 0%, #E0F2FE 55%, #86EFAC 55%, #4ADE80 100%);
  border-color: #7DD3FC;
}

.sticker-playground-canvas.theme-space {
  background: radial-gradient(circle at 20% 25%, #312E81 0%, #1E1B4B 60%, #0F172A 100%);
  border-color: #818CF8;
}

.sticker-playground-canvas.theme-ocean {
  background: linear-gradient(to bottom, #7DD3FC 0%, #38BDF8 58%, #FDE68A 58%, #FCD34D 100%);
  border-color: #38BDF8;
}

.placed-playground-sticker {
  position: absolute;
  font-size: 46px;
  cursor: grab;
  user-select: none;
  touch-action: none;
  filter: drop-shadow(0 3px 6px rgba(0,0,0,0.15));
  transition: transform 0.1s;
}

.placed-playground-sticker:active {
  cursor: grabbing;
}

.placed-playground-sticker.jumping {
  animation: jumpSticker 0.6s ease;
}

@keyframes jumpSticker {
  0% { transform: translateY(0); }
  50% { transform: translateY(-28px) scale(1.2); }
  100% { transform: translateY(0); }
}

.playground-stickers-bar {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 6px 2px;
}

.playground-chip {
  background: white;
  border: 2px solid #E2E8F0;
  border-radius: 18px;
  padding: 6px 12px;
  font-size: 13.5px;
  font-weight: 800;
  color: #334155;
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s;
}

.playground-chip:hover {
  border-color: #38BDF8;
  background: #F0F9FF;
  transform: translateY(-2px);
}

/* 家长指导弹窗 */
.parent-guide-content {
  text-align: left;
  max-height: 360px;
  overflow-y: auto;
  padding: 4px 8px;
}

.guide-section {
  background: #F8FAFC;
  border-left: 4px solid #38BDF8;
  border-radius: 0 16px 16px 0;
  padding: 12px 16px;
  margin-bottom: 14px;
}

.guide-section h4 {
  font-size: 15.5px;
  font-weight: 900;
  color: #0F172A;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.guide-section p {
  font-size: 14px;
  color: #475569;
  line-height: 1.6;
}

/* iPad 竖屏提示遮罩 */
.orientation-hint-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.78);
  backdrop-filter: blur(8px);
  z-index: 99999;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.hint-card {
  background: white;
  border-radius: 28px;
  padding: 32px 26px;
  text-align: center;
  max-width: 380px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  animation: popIn 0.3s ease;
}

.rotate-device-icon {
  font-size: 56px;
  margin-bottom: 12px;
  animation: rotateDevice 2s infinite ease-in-out;
}

.hint-card h2 {
  font-size: 22px;
  font-weight: 900;
  color: #1E293B;
  margin-bottom: 8px;
}

.hint-card p {
  font-size: 15px;
  color: #64748B;
  line-height: 1.6;
  margin-bottom: 20px;
}

@keyframes rotateDevice {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(90deg); }
}

@media (orientation: portrait) and (min-width: 600px) {
  .orientation-hint-overlay {
    display: flex;
  }
}

/* 动画特效定义 */
@keyframes bounceSoft {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

@keyframes spinSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes popIn {
  0% { transform: scale(0.6); opacity: 0; }
  80% { transform: scale(1.04); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes correctBounce {
  0% { transform: scale(1); }
  40% { transform: scale(1.1) rotate(2deg); }
  80% { transform: scale(0.96) rotate(-2deg); }
  100% { transform: scale(1); }
}

@keyframes wobble {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

@keyframes floatSmoke {
  0% { opacity: 0; transform: translateY(0) scale(0.8); }
  50% { opacity: 0.8; transform: translateY(-8px) scale(1.1); }
  100% { opacity: 0; transform: translateY(-16px) scale(1.4); }
}

@keyframes pulseScale {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.08); }
}

@keyframes trainDepart {
  0% { transform: translateX(0); }
  25% { transform: translateX(10px); }
  50% { transform: translateX(-5px); }
  75% { transform: translateX(18px); }
  100% { transform: translateX(0); }
}

/* 窄屏设备降级适配 */
@media (max-width: 890px) {
  .mode-navigation {
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
  }

  .stickers-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .header-bar {
    padding: 6px 12px;
  }

  .game-logo h1 {
    font-size: 19px;
  }
}