/* ===== 益智游戏合集 · 共享样式（响应式） ===== */

:root {
  --c-bg: #f5f6fb;
  --c-surface: #ffffff;
  --c-surface-2: #f0f1f7;
  --c-border: #e3e5ef;
  --c-text: #1f2430;
  --c-text-soft: #6b7280;
  --c-primary: #4f46e5;
  --c-primary-soft: #eef0ff;
  --c-primary-dk: #4338ca;
  --c-success: #16a34a;
  --c-danger: #dc2626;
  --c-warn: #d97706;
  --shadow-sm: 0 1px 2px rgba(20, 23, 40, 0.06);
  --shadow-md: 0 4px 16px rgba(20, 23, 40, 0.08);
  --radius: 14px;
  --radius-sm: 9px;
  --max-w: 920px;
}

/* ===== 深色模式：统一令牌覆盖（驱动全部 11 游戏 DOM 层） =====
   仅覆盖随主题反转的表层/文字/柔和色与 primary-soft/状态色/阴影；
   --c-primary / --c-primary-dk 保持深靛蓝，保证白字按钮在两套主题下均可读。
   画布游戏（snake）直接读取 --c-surface-2/--c-border/--c-text-soft，自动跟随。 */
body.dark {
  --c-bg: #16161f;
  --c-surface: #1e1f2b;
  --c-surface-2: #272838;
  --c-border: #34364a;
  --c-text: #e7e8f0;
  --c-text-soft: #9aa0b4;
  --c-primary-soft: #2a2750;
  --c-success: #4ade80;
  --c-danger: #f87171;
  --c-warn: #fbbf24;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
}


* { box-sizing: border-box; margin: 0; padding: 0; }

/* 保证 HTML hidden 属性始终生效，覆盖后续显式 display 规则 */
[hidden] { display: none !important; }

html, body { height: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Hiragino Sans GB", Roboto, Helvetica, Arial, sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;   /* 移动端：动态视口高度，避免地址栏导致整页无法滚动 */
}

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

/* ---------- 底部导航 ---------- */
.bottom-nav {
  position: sticky;
  bottom: 0;
  z-index: 50;
  background: var(--c-surface);
  border-top: 1px solid var(--c-border);
  box-shadow: 0 -2px 8px rgba(20, 23, 40, 0.06);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  box-sizing: border-box;
}
.nav-games {
  position: relative;
  flex: 1;
  min-width: 0;            /* 允许 flex 子项收缩，避免超出屏宽 */
  overflow: hidden;       /* 无滚动条，靠滑动切换 */
  touch-action: pan-y;     /* 横向由 JS 接管，纵向交给页面滚动 */
}
.nav-track {
  display: flex;
  align-items: center;
  gap: 6px;
  width: max-content;
  user-select: none;
  transition: transform .28s cubic-bezier(.22, .61, .36, 1);
  will-change: transform;
}
.nav-track.dragging { transition: none; }
.nav-btn {
  flex-shrink: 0;
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text-soft);
  background: transparent;
  transition: all .15s ease;
  white-space: nowrap;
}
.nav-btn:hover { background: var(--c-surface-2); color: var(--c-text); }
.nav-btn.active { background: var(--c-primary); color: #fff; }

/* 常驻「首页」按钮：始终可见，位于底部导航条最左。
   任何界面（游戏内 / 游玩中）都能一键回统一首页。 */
.nav-home-btn {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  color: var(--c-text);
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 1px 4px rgba(20, 23, 40, 0.12);
  transition: transform .15s ease, background .15s ease, color .15s ease, border-color .15s ease;
}
.nav-home-btn:active { transform: scale(0.94); }
.nav-home-btn.active { background: var(--c-primary); color: #fff; border-color: transparent; }
.nav-home-icon { line-height: 1; }

/* 导航左右滑动箭头 */
.nav-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 6;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid var(--c-border);
  background: var(--c-bg, #fff);
  color: var(--c-text);
  font-size: 22px;
  line-height: 1;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 1px 4px rgba(20, 23, 40, 0.16);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform .15s ease, background .15s ease, opacity .15s ease;
}
.nav-arrow[hidden] { display: none; }
.nav-arrow-left { left: 2px; }
.nav-arrow-right { right: 2px; }
.nav-arrow:active { transform: translateY(-50%) scale(0.92); }
.nav-arrow:disabled { opacity: 0.3; cursor: default; }

/* ---------- 主区 ---------- */
.app-main {
  flex: 1;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 18px 16px 8px;
}
.game-view { width: 100%; }

/* ---------- 通用游戏布局 ---------- */
.game-wrap {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 18px;
}
.game-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.game-head h2 { font-size: 20px; }
.game-head .sub { font-size: 13px; color: var(--c-text-soft); margin-top: 2px; }
/* 数字华容道说明保持单行，不折行 */
.klotski-sub { white-space: nowrap; }
.game-stats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  flex-shrink: 0;
}
.stat {
  background: var(--c-surface-2);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 13px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 58px;
}
.stat .v { font-size: 18px; font-weight: 800; color: var(--c-primary); line-height: 1.1; }
.stat .l { font-size: 11px; color: var(--c-text-soft); }

.toolbar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
  align-items: center;
}
.toolbar .spacer { flex: 1; }
.field-inline { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--c-text-soft); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  transition: all .15s ease;
  user-select: none;
}
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dk); }
.btn-ghost { background: var(--c-surface-2); color: var(--c-text); }
.btn-ghost:hover { background: var(--c-border); }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
/* 强制隐藏：避免 .btn / .fc-hint-badge 等自带 display 覆盖 [hidden] 属性 */
[hidden] { display: none !important; }

select, input[type="number"] {
  font-family: inherit;
  font-size: 14px;
  padding: 7px 10px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  background: var(--c-surface);
  color: var(--c-text);
  outline: none;
}
select:focus, input:focus { border-color: var(--c-primary); }

/* ---------- 棋盘容器 ---------- */
.board-area {
  display: flex;
  flex-direction: column;
  align-items: safe center;
  justify-content: flex-start;
  padding: 8px 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  touch-action: manipulation;
}

/* ---------- 提示 / 弹窗 ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(31, 36, 48, 0.92);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: all .25s ease;
  max-width: 88vw;
  text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

.modal-overlay {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: rgba(15, 17, 28, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 150;
  padding: 20px;
  animation: fade .2s ease;
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.modal {
  background: var(--c-surface);
  border-radius: var(--radius);
  padding: 28px 24px;
  max-width: 360px;
  width: 100%;
  text-align: center;
  box-shadow: var(--shadow-md);
  animation: pop .25s ease;
}
@keyframes pop { from { transform: scale(.9); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.modal-icon { font-size: 44px; margin-bottom: 6px; }
.modal-title { font-size: 22px; margin-bottom: 6px; }
.modal-desc { color: var(--c-text-soft); font-size: 14px; margin-bottom: 18px; }
.modal-actions { display: flex; gap: 10px; justify-content: center; }

/* ---------- 统一顶栏（设置左 / 状态右） ---------- */
.hdr-std { align-items: center; }
.hdr-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; flex: 1 1 auto; }
.btn-help {
  background: var(--c-surface-2);
  color: var(--c-text);
  border: 1px solid var(--c-border);
  padding: 7px 14px;
}
.btn-help:hover { background: var(--c-border); }

/* ---------- 说明弹窗 ---------- */
.help-modal { text-align: left; max-width: 380px; }
.help-title { text-align: center; }
.help-desc { color: var(--c-text-soft); font-size: 14px; line-height: 1.55; margin-bottom: 14px; }
.help-ops-label { font-weight: 700; font-size: 13px; color: var(--c-text); margin-bottom: 8px; }
.help-ops { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.help-op-item {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-text-soft);
}
.help-op-item::before {
  content: "•";
  position: absolute;
  left: 2px;
  color: var(--c-primary);
  font-weight: 800;
}

/* =============================================
   2048
   ============================================= */
.g2048-board {
  --cells: 4;
  --gap: 10px;
  --pad: 10px;
  position: relative;
  width: min(100%, 440px);
  aspect-ratio: 1 / 1;
  background: var(--c-surface-2);
  border-radius: var(--radius);
  padding: var(--pad);
  display: grid;
  grid-template-columns: repeat(var(--cells), 1fr);
  grid-template-rows: repeat(var(--cells), 1fr);
  gap: var(--gap);
  touch-action: none;
}
.g2048-board .cell {
  background: rgba(0,0,0,0.04);
  border-radius: var(--radius-sm);
}
.g2048-tiles {
  position: absolute;
  inset: var(--pad);
  pointer-events: none;
}
.g2048-tile {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-weight: 800;
  transition: transform .12s ease;
  will-change: transform;
}
.g2048-tile[data-v="2"] { background: #eee4da; color: #776e65; }
.g2048-tile[data-v="4"] { background: #ede0c8; color: #776e65; }
.g2048-tile[data-v="8"] { background: #f2b179; color: #fff; }
.g2048-tile[data-v="16"] { background: #f59563; color: #fff; }
.g2048-tile[data-v="32"] { background: #f67c5f; color: #fff; }
.g2048-tile[data-v="64"] { background: #f65e3b; color: #fff; }
.g2048-tile[data-v="128"] { background: #edcf72; color: #fff; font-size: 0.85em; }
.g2048-tile[data-v="256"] { background: #edcc61; color: #fff; font-size: 0.85em; }
.g2048-tile[data-v="512"] { background: #edc850; color: #fff; font-size: 0.85em; }
.g2048-tile[data-v="1024"] { background: #edc53f; color: #fff; font-size: 0.7em; }
.g2048-tile[data-v="2048"] { background: #edc22e; color: #fff; font-size: 0.7em; }
.g2048-tile[data-v="4096"] { background: #3c3a32; color: #fff; font-size: 0.65em; }
.g2048-appear { animation: g2048in .18s ease; }
@keyframes g2048in { from { transform: scale(0); } to { transform: scale(1); } }

/* =============================================
   汉诺塔
   ============================================= */
.hanoi-stage {
  width: min(100%, 420px);
  aspect-ratio: 1 / 1;
  background: var(--c-surface-2);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  padding: 18px 10px 14px;
}
.hanoi-peg {
  flex: 1;
  height: 100%;
  position: relative;
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  justify-content: flex-start;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background .15s;
}
.hanoi-peg:hover { background: var(--c-primary-soft); }
.hanoi-peg.sel { background: var(--c-primary-soft); box-shadow: inset 0 0 0 2px var(--c-primary); }
.hanoi-peg-rod {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px;
  height: calc(100% - 18px);
  background: var(--c-border);
  border-radius: 4px;
  z-index: 0;
}
.hanoi-peg-base {
  width: 80%;
  height: 16px;
  background: var(--c-border);
  border-radius: 6px;
  z-index: 1;
}
.hanoi-disk {
  height: 22px;
  border-radius: 999px;
  margin: 9px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  position: relative;
  z-index: 2;
  transition: transform .15s ease;
}
.hanoi-disk.lift { transform: translateY(-12px); box-shadow: var(--shadow-md); }

/* =============================================
   数字华容道
   ============================================= */
.slide-board {
  display: grid;
  width: min(100%, 420px);
  aspect-ratio: 1 / 1;
  border-radius: var(--radius);
  overflow: hidden;
  gap: 6px;
  padding: 8px;
  background: var(--c-surface-2);
  touch-action: manipulation;
}
.slide-s3 { grid-template-columns: repeat(3, 1fr); }
.slide-s4 { grid-template-columns: repeat(4, 1fr); }
.slide-s5 { grid-template-columns: repeat(5, 1fr); }
.slide-cell {
  background: var(--c-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  user-select: none;
  transition: transform .1s ease, box-shadow .15s;
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
  aspect-ratio: 1 / 1;
}
.slide-cell:active { transform: scale(.94); }
.slide-cell.empty {
  background: transparent !important;
  box-shadow: none;
  cursor: default;
}
.slide-cell.empty:active { transform: none; }

/* =============================================
   数独
   ============================================= */
.sudoku-board {
  width: min(100%, 460px);
  aspect-ratio: 1 / 1;
  display: grid;
  gap: 1px;
  background: var(--c-text);
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid var(--c-text);
}
.sudoku-cell {
  background: var(--c-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(18px, 6vw, 26px);
  font-weight: 600;
  cursor: pointer;
  position: relative;
  transition: background .12s;
}
.sudoku-cell:hover { background: var(--c-primary-soft); }
.sudoku-cell.given { color: var(--c-text); cursor: default; font-weight: 700; }
.sudoku-cell.user { color: var(--c-primary); }
.sudoku-cell.sel { background: var(--c-primary-soft); outline: 2px solid var(--c-primary); outline-offset: -2px; }
.sudoku-cell.peer { background: #e8eaff; }
.sudoku-cell.same { background: #d9e6ff; }
.sudoku-cell.err { color: var(--c-danger) !important; }
.sudoku-cell.peer.sel, .sudoku-cell.same.sel { background: var(--c-primary-soft); }
.sudoku-cell.br-r, .sudoku-cell.br-b { /* 加粗宫格线用 box-shadow 实现 */ }

/* 数独数字面板 */
.sudoku-pad {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
  max-width: 460px;
  justify-content: center;
}
.sudoku-pad button {
  flex: 0 0 auto;
  min-width: 48px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--c-surface-2);
  font-size: 20px;
  font-weight: 700;
  color: var(--c-primary);
}
.sudoku-pad button:hover { background: var(--c-primary-soft); }
.sudoku-pad button.erase { color: var(--c-danger); }

/* =============================================
   消消乐
   ============================================= */
.m3-board {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  width: min(100%, 420px);
  aspect-ratio: 1 / 1;
  gap: 4px;
  padding: 6px;
  background: var(--c-surface-2);
  border-radius: var(--radius);
}
.m3-cell {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(18px, 6vw, 30px);
  background: var(--c-surface);
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
  transition: transform .1s ease;
}
.m3-cell.empty { background: transparent; }
.m3-cell.sel {
  transform: scale(1.12);
  box-shadow: 0 0 0 3px var(--c-primary), 0 4px 12px rgba(79,70,229,.25);
  z-index: 2;
}
.m3-cell:active { transform: scale(.92); }
.m3-cell.sel:active { transform: scale(1.05); }

/* =============================================
   连连看
   ============================================= */
.lk-board {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  width: min(100%, 420px);
  aspect-ratio: 1 / 1;
  gap: 4px;
  padding: 6px;
  background: var(--c-surface-2);
  border-radius: var(--radius);
}
.lk-cell {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(18px, 6vw, 30px);
  background: var(--c-surface);
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
  transition: transform .1s ease, background .15s;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.lk-cell.gone { background: transparent; box-shadow: none; cursor: default; }
.lk-cell.sel {
  transform: scale(1.08);
  box-shadow: 0 0 0 3px var(--c-primary);
}
.lk-cell.hint {
  animation: lkPulse .5s ease-in-out 3;
  box-shadow: 0 0 0 3px var(--c-warn);
}
@keyframes lkPulse {
  0%, 100% { box-shadow: 0 0 0 3px var(--c-warn); }
  50% { box-shadow: 0 0 0 3px var(--c-warn), 0 0 16px var(--c-warn); }
}
.lk-cell:active { transform: scale(.9); }
.lk-cell.sel:active { transform: scale(1.02); }

/* =============================================
   俄罗斯方块
   ============================================= */
.tetris-wrap {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  justify-content: center;
}
.tetris-main { flex-shrink: 0; }
.tetris-board {
  width: min(50vw, 300px);
  background: var(--c-surface-2);
  border-radius: var(--radius);
  padding: 4px;
  position: relative;
}
.tetris-grid-outer {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-template-rows: repeat(20, 1fr);
  aspect-ratio: 3 / 5;
  gap: 1px;
}
.tetris-cell {
  aspect-ratio: 1 / 1;
  border-radius: 2px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  transition: background .06s;
}
.tetris-pause-overlay {
  position: absolute; top: 0; right: 0; bottom: 0; left: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  font-size: 28px; font-weight: 700;
  color: var(--c-text-soft);
  background: rgba(255,255,255,.7);
  border-radius: var(--radius);
  z-index: 5;
  cursor: pointer;
  user-select: none;
}
.tetris-pause-hint { font-size: 13px; font-weight: 500; opacity: .8; }
.tetris-side {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 100px;
}
.tetris-panel {
  background: var(--c-surface-2);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  text-align: center;
}
.tetris-label { font-size: 11px; color: var(--c-text-soft); }
.tetris-stat { font-size: 22px; font-weight: 700; color: var(--c-primary); }
.tetris-next-grid {
  display: grid;
  gap: 1px;
  margin: 6px auto 0;
  max-width: 80px;
}
.tetris-ncell {
  aspect-ratio: 1 / 1;
  border-radius: 2px;
  min-width: 16px;
}
.tetris-btn {
  width: 100%;
  padding: 10px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  background: var(--c-primary);
  color: #fff;
}
.tetris-restart { background: var(--c-surface-2); color: var(--c-text); }
.tetris-mobile-ctrl {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.tmc-btn {
  width: 56px; height: 56px;
  border-radius: 12px;
  font-size: 22px;
  font-weight: 700;
  background: var(--c-surface-2);
  color: var(--c-text);
  display: flex; align-items: center; justify-content: center;
  user-select: none;
  touch-action: none;
}
.tmc-rot { background: var(--c-primary-soft); color: var(--c-primary); }
.tmc-drop { background: var(--c-primary); color: #fff; }
@media (min-width: 769px) { .tetris-mobile-ctrl { display: none; } }
@media (max-width: 820px) {
  .tetris-wrap { flex-direction: column; align-items: center; gap: 10px; }
  .tetris-side { flex-direction: row; flex-wrap: wrap; justify-content: center; gap: 8px; width: 100%; }
  /* 手机端：面板内「下一块」文字与预览方块显示在同一行 */
  .tetris-panel { display: flex; align-items: center; gap: 8px; }
  .tetris-btn { flex: 0 0 auto; width: auto; padding: 8px 16px; }
  /* 以视口高度驱动棋盘：用 svh（小视口高度）而非 dvh，避免手机地址栏收起/展开导致滚动时棋盘被重新计算而忽大忽小 */
  .tetris-board {
    width: auto;
    height: min(70vh, 580px);
    height: min(70svh, 580px);
  }
  .tetris-grid-outer {
    height: 100%;
    width: calc((min(70vh, 580px) - 8px) * 12 / 20);
    width: calc((min(70svh, 580px) - 8px) * 12 / 20);
  }
  /* 下一块预览及方块放大：直接给预览网格确定宽度，避免 min-width:0 把 1fr 列塌成 0 导致预览极小 */
  .tetris-panel { padding: 9px 13px; }
  .tetris-label { font-size: 13px; }
  .tetris-stat { font-size: 20px; }
  .tetris-next-grid { width: 36px; max-width: 36px; gap: 1px; margin: 0; }
  .tetris-ncell { min-width: 0; width: 100%; aspect-ratio: 1 / 1; }
  /* 方向键单行铺满 */
  .tetris-mobile-ctrl { margin-top: 10px; width: 100%; flex-wrap: nowrap; gap: 6px; }
  .tmc-btn { flex: 1 1 0; min-width: 0; width: auto; height: 50px; font-size: 19px; }
}

/* =============================================
   扫雷
   ============================================= */
.ms-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.ms-head {
  width: 100%;
  max-width: 600px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.ms-diff-row { display: flex; gap: 4px; }
.ms-diff-btn {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  background: var(--c-surface-2);
  color: var(--c-text-soft);
}
.ms-diff-btn.active { background: var(--c-primary); color: #fff; }
.ms-flag-toggle { font-size: 16px; padding: 6px 10px; position: relative; }
.ms-flag-toggle.active { background: var(--c-primary); color: #fff; box-shadow: 0 0 0 2px var(--c-primary) inset; }
.ms-flag-toggle.active::after {
  content: "";
  position: absolute; top: -3px; right: -3px;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--c-danger, #e5484d);
}
.ms-stats {
  display: flex;
  align-items: center;
  gap: 10px;
}
.ms-stat {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-text);
  background: var(--c-surface-2);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
}
.ms-reset-btn {
  font-size: 24px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--c-surface-2);
}
.ms-board {
  display: grid;
  gap: 1px;
  background: var(--c-text);
  padding: 2px;
  border-radius: var(--radius-sm);
  /* 所有难度统一 30px 大方格；棋盘较宽时超屏横向滚动 */
  --ms-cell: 30px;
  width: calc(var(--ms-cols, 9) * var(--ms-cell) + (var(--ms-cols, 9) - 1) * 1px + 4px);
  margin: 0 auto;
  flex: 0 0 auto;
}
.ms-cell {
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(11px, 3vw, 16px);
  font-weight: 700;
  background: var(--c-surface);
  cursor: pointer;
  user-select: none;
  border-radius: 2px;
  transition: background .08s;
  min-width: 0;
  overflow: hidden;
}
.ms-cell:active { background: #e8e8f0; }
.ms-cell.ms-revealed {
  background: #e0e0ea;
  cursor: default;
}
.ms-cell.ms-mine { background: #fecaca; }
.ms-n1 { color: #2196f3; }
.ms-n2 { color: #4caf50; }
.ms-n3 { color: #f44336; }
.ms-n4 { color: #1a237e; }
.ms-n5 { color: #b71c1c; }
.ms-n6 { color: #00838f; }
.ms-n7 { color: #000; }
.ms-n8 { color: #666; }
.ms-flagged { background: #d9e6ff; }
/* 深色模式：扫雷格与数字配色（默认经典浅色格在暗底上不可读） */
body.dark .ms-cell { background: #2a2c3a; }
body.dark .ms-cell.ms-revealed { background: #20222e; }
body.dark .ms-cell:active { background: #34374a; }
body.dark .ms-cell.ms-mine { background: #7f1d1d; }
body.dark .ms-flagged { background: #1e3a5f; }
body.dark .ms-n1 { color: #60a5fa; }
body.dark .ms-n2 { color: #4ade80; }
body.dark .ms-n3 { color: #f87171; }
body.dark .ms-n4 { color: #818cf8; }
body.dark .ms-n5 { color: #fca5a5; }
body.dark .ms-n6 { color: #22d3ee; }
body.dark .ms-n7 { color: #cbd5e1; }
body.dark .ms-n8 { color: #94a3b8; }
@media (max-width: 480px) {
  .ms-head { justify-content: center; }
  .ms-diff-btn { font-size: 12px; padding: 5px 10px; }
}

/* =============================================
   贪吃蛇
   ============================================= */
.snake-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.snake-top {
  width: 100%;
  max-width: 440px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.snake-stats { display: flex; gap: 8px; }
.snake-actions { display: flex; gap: 6px; }
.btn-sm { padding: 7px 14px; font-size: 13px; }
.snake-canvas {
  border-radius: var(--radius);
  background: var(--c-surface-2);
  box-shadow: var(--shadow-md);
  touch-action: none;
  display: block;
}
.snake-mobile-ctrl {
  display: flex;
  justify-content: center;
}
.snake-dpad {
  display: grid;
  grid-template-columns: repeat(3, 52px);
  grid-template-rows: repeat(3, 52px);
  gap: 6px;
}
.snake-dbtn {
  width: 52px; height: 52px;
  border-radius: 12px;
  background: var(--c-surface-2);
  color: var(--c-text);
  font-size: 20px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  user-select: none;
  -webkit-user-select: none;
  transition: background .1s;
}
.snake-dbtn:active { background: var(--c-primary-soft); }
.snake-up { grid-column: 2; grid-row: 1; }
.snake-left { grid-column: 1; grid-row: 2; }
.snake-right { grid-column: 3; grid-row: 2; }
.snake-down { grid-column: 2; grid-row: 3; }

@media (min-width: 769px) { .snake-mobile-ctrl { display: none; } }
@media (max-width: 480px) {
  .snake-top { justify-content: center; }
  .snake-dpad { grid-template-columns: repeat(3, 46px); grid-template-rows: repeat(3, 46px); }
  .snake-dbtn { width: 46px; height: 46px; font-size: 18px; }
}

/* =============================================
   找猫咪
   ============================================= */
.fc-rules {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 10px;
  max-width: 480px;
  margin: 0 auto 14px;
}
.fc-rule {
  display: flex; align-items: center; gap: 8px;
  background: var(--c-surface);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--c-text-soft);
  box-shadow: var(--shadow-sm);
}
.fc-rule-icon {
  width: 18px; height: 18px; border-radius: 4px;
}
.fc-rule-grid {
  display: grid; grid-template-columns: repeat(3, 6px); grid-template-rows: repeat(3, 6px); gap: 1px;
}
.fc-rule-grid span { background: var(--c-text-soft); border-radius: 1px; opacity: .25; }
.fc-rule-grid span:nth-child(5) { opacity: 1; background: var(--c-primary); }
.fc-rule-adj span:nth-child(5) { background: var(--c-danger); }
.fc-rule-adj span:nth-child(2),
.fc-rule-adj span:nth-child(4),
.fc-rule-adj span:nth-child(6),
.fc-rule-adj span:nth-child(8) { opacity: .6; }

.fc-board {
  display: grid;
  gap: 3px;
  padding: 4px;
  background: var(--c-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 480px;
  touch-action: none; /* 防止划过标记时页面滚动 / 双击缩放 */
  user-select: none;
  -webkit-user-select: none;
}
.fc-board.fc-size-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.fc-board.fc-size-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.fc-board.fc-size-7 { grid-template-columns: repeat(7, minmax(0, 1fr)); }
.fc-board.fc-size-8 { grid-template-columns: repeat(8, minmax(0, 1fr)); }
.fc-board.fc-size-9 { grid-template-columns: repeat(9, minmax(0, 1fr)); }

.fc-diff {
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
  background: var(--c-surface-2);
  color: var(--c-text);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  max-width: 140px;
}
.fc-cell {
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  border: none;
  background: var(--fc-bg);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: transform .08s, filter .1s;
  position: relative;
}
.fc-cell:active { transform: scale(.92); }
.fc-cell.fc-has-cat::after {
  content: "";
  position: absolute; inset: 4px;
  background: rgba(255,255,255,.92);
  border-radius: 6px;
}
/* 标注“不是猫”的格子 */
.fc-cell.fc-excluded {
  filter: grayscale(.55) brightness(.8);
  cursor: pointer;
}
.fc-cell.fc-excluded::after {
  content: "";
  position: absolute; inset: 4px;
  background: rgba(0,0,0,.28);
  border-radius: 6px;
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.5);
}
.fc-x {
  font-size: clamp(16px, 4.5vw, 26px);
  font-weight: 700;
  color: rgba(255,255,255,.92);
  z-index: 1;
  line-height: 1;
  text-shadow: 0 1px 2px rgba(0,0,0,.5);
}
/* 标记模式按钮激活态 */
#fcMark.active {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}
.fc-cat {
  font-size: clamp(18px, 5vw, 30px);
  z-index: 1;
  line-height: 1;
}
.fc-hint { animation: fcHintPulse .6s ease; }
@keyframes fcHintPulse {
  0%, 100% { filter: brightness(1); }
  50% { filter: brightness(1.4); }
}

.fc-hint-btn { position: relative; }
.fc-bulb { font-size: 18px; }
.fc-hint-badge {
  position: absolute; top: -6px; right: -6px;
  min-width: 20px; height: 20px;
  background: var(--c-danger);
  color: #fff;
  border-radius: 50%;
  font-size: 11px;
  display: flex; align-items: center; justify-content: center;
  padding: 0 5px;
}

@media (max-width: 480px) {
  .fc-rules { gap: 6px; }
  .fc-rule { padding: 6px 8px; font-size: 11px; }
}



/* =============================================
   语言选项旗帜（被 langOptions 复用）
   ============================================= */
.lang-flag {
  font-size: 20px;
  flex-shrink: 0;
  width: 24px;
  text-align: center;
}

/* =============================================
   箾头解迷
   ============================================= */
.ap-hearts { font-size: 20px; letter-spacing: 2px; }

.ap-board {
  position: relative;
  padding: 8px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 460px;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}
.ap-svg { display: block; width: 100%; height: 100%; }

.ap-grid { opacity: .35; }
.ap-dot { fill: var(--c-text-soft); }

.ap-path { cursor: pointer; }
.ap-path-line {
  fill: none;
  stroke: var(--c-text);
  stroke-width: 10;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke .18s ease, filter .18s ease;
}
.ap-arrowhead polygon {
  fill: var(--c-text);
  transition: fill .18s ease;
}
.ap-path-hit {
  fill: none;
  stroke: transparent;
  stroke-width: 28;
  pointer-events: stroke;
  cursor: pointer;
}

.ap-path:hover .ap-path-line { stroke: var(--c-primary); }
.ap-path:hover .ap-arrowhead polygon { fill: var(--c-primary); }
.ap-path--free .ap-path-line { filter: drop-shadow(0 0 4px var(--c-primary)); }
.ap-path--free .ap-arrowhead polygon { fill: var(--c-primary); }

.ap-path--removed { display: none; }

.ap-path--error { animation: apShake .4s ease; }
.ap-path--error .ap-path-line { stroke: var(--c-danger); }
.ap-path--error .ap-arrowhead polygon { fill: var(--c-danger); }

.ap-hint { animation: apPulse .45s ease 2; }

/* 飞出动画的临时覆盖层 */
.ap-flyer-svg {
  position: absolute;
  inset: 8px;
  z-index: 10;
  pointer-events: none;
  overflow: visible;
}
.ap-flyer {
  transition: transform 520ms cubic-bezier(.45, .05, .3, 1), opacity 520ms ease;
  transform: translate(var(--dx, 0px), var(--dy, 0px));
  opacity: 1;
}
.ap-flyer .ap-path-line { filter: drop-shadow(0 0 7px var(--c-primary)); }
.ap-flyer .ap-arrowhead polygon { fill: var(--c-primary); }

/* 彗星拖尾：淡色、略滞后，营造“演出”滑出感 */
.ap-trail {
  transition: transform 520ms cubic-bezier(.45, .05, .3, 1) 70ms, opacity 520ms ease 70ms;
  transform: translate(var(--dx, 0px), var(--dy, 0px));
  opacity: .3;
}
.ap-trail .ap-path-line { filter: none; }

/* 起手蓄力：箭头弹一下 + 整条亮起 */
.ap-path--leaving .ap-arrow-core {
  animation: apLeadPop .18s ease;
  transform-box: fill-box;
  transform-origin: center;
}
.ap-path--leaving .ap-path-line { filter: drop-shadow(0 0 9px var(--c-primary)); stroke: var(--c-primary); }
.ap-path--leaving .ap-arrowhead polygon { fill: var(--c-primary); }

.ap-stats {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 18px;
  margin: 10px 0 14px;
  font-size: 14px;
  color: var(--c-text-soft);
}
.ap-stats b { color: var(--c-text); font-weight: 600; }

@keyframes apPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.18); }
}
@keyframes apShake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-5px); }
  40% { transform: translateX(5px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

@keyframes apLeadPop {
  0%   { transform: scale(1); }
  55%  { transform: scale(1.45); }
  100% { transform: scale(1); }
}

@media (max-width: 480px) {
  .ap-board { padding: 6px; }
  .ap-flyer-svg { inset: 6px; }
  .ap-path-line { stroke-width: 9; }
  .ap-path-hit { stroke-width: 26; }
}

/* =============================================
   响应式
   ============================================= */
@media (max-width: 600px) {
  .game-wrap { padding: 14px; }
  .game-head h2 { font-size: 17px; }
  .app-main { padding: 14px 12px 6px; }
  .stat { padding: 5px 9px; min-width: 50px; }
  .stat .v { font-size: 16px; }
  .btn { padding: 8px 13px; font-size: 13px; }
  .bottom-nav { padding: 6px 8px; gap: 6px; }
  .nav-btn { padding: 9px 14px; font-size: 13px; }
  /* 手机端：HUD（标题 / 统计 / 工具栏）整体居中，换行也居中 */
  .game-head,
  .game-stats,
  .toolbar { justify-content: center; text-align: center; }
}
/* 手机/小平板：所有游戏 HUD（标题/统计/工具栏/各游戏专属头部）整体居中 */
@media (max-width: 768px) {
  .game-head, .game-stats, .toolbar,
  .tetris-side, .ms-head, .snake-top, .hdr-std {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 380px) {
  .nav-btn { padding: 8px 11px; font-size: 12px; }
  .nav-track { gap: 4px; }
  /* 极小屏避免横向溢出，允许说明折行 */
  .klotski-sub { white-space: normal; }
  /* 极小屏缩小盘子，保证 8 盘也能放下 */
  .hanoi-stage { padding: 12px 6px 10px; }
  .hanoi-disk { height: 16px; margin: 5px 0; }
}

/* =============================================
   Capacitor / PWA 移动端适配
   — 安全区域（刘海 / Home Indicator）
   — 禁止回弹滚动 / 文字选择
   ============================================= */
@supports (padding: env(safe-area-inset-top)) {
  .app-main {
    padding-top: max(18px, env(safe-area-inset-top));
  }
  .bottom-nav {
    padding-bottom: max(6px, env(safe-area-inset-bottom));
  }
}

html, body {
  overscroll-behavior: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

/* ===== GameApp 覆盖层（益智游戏合集容器） ===== */
#gameAppOverlay {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 1000;
  display: none;
  flex-direction: column;
  background: var(--c-bg, #f5f6fb);
  overflow: hidden;
}

#gameAppOverlay .app-main {
  flex: 1;
  min-height: 0;            /* 关键：允许 flex 子项内部滚动（否则内容撑高被 overlay 裁切，无法滚动） */
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-y;      /* 移动端：纵向手势交给滚动，避免被内部元素吞掉 */
  overscroll-behavior: contain;
  padding-top: env(safe-area-inset-top);
  position: relative;
}

/* Origin Game 画布：与子游戏 DOM 并列于同一内容区（顶栏下方）。
   画布定位为 app-main 内的绝对填充层，由 JS 计算可见高度（视口高度减顶栏）。 */
#gameAppOverlay #c {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
}

/* ---- 顶栏布局：设置 + 关卡 + 横向滑动游戏选择 ---- */
.bottom-nav {
  position: sticky;
  top: 0;
  bottom: auto;
  z-index: 50;
  background: var(--c-surface);
  border-top: none;
  border-bottom: 1px solid var(--c-border);
  box-shadow: 0 2px 8px rgba(20, 23, 40, 0.06);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  box-sizing: border-box;
  padding-top: calc(6px + env(safe-area-inset-top, 0px));
}



/* ============================================================
   Origin Game DOM 界面（替代原 Canvas 非棋盘屏）
   复用十合一 css 变量（--c-primary 等 indigo 主题）
   ============================================================ */
#saUi{
  position:absolute;top:0;right:0;bottom:0;left:0;
  z-index:20;
  pointer-events:none;            /* 棋盘点击穿透到 #c */
  display:block;
  font-family:'Nunito',sans-serif;
}
/* 仅交互元素恢复点击 */
#saUi button,
#saUi .sa-modal-overlay,
#saUi .sa-screen:not([hidden]),
#saUi .sa-screen[style*="display: block"]{
  pointer-events:auto;
}

/* ---------- play 屏 HUD 已迁入画布（drawSaCanvasHud），见 index.html ----------
   原 .sa-hud / .sa-hud-top / .sa-level-title / .sa-hearts / .sa-top-left /
   .sa-top-right / .sa-h 等 DOM 顶栏样式已废弃移除；控件直接画在白卡顶部。 */

/* ---------- 整屏（stats/ach/settings/gameover） ---------- */
.sa-screen{
  position:absolute;top:0;right:0;bottom:0;left:0;
  display:none;flex-direction:column;
  background:var(--c-bg);
  box-sizing:border-box;
  padding:calc(env(safe-area-inset-top,0px) + 8px) 12px calc(env(safe-area-inset-bottom,0px) + 12px);
  overflow-y:auto;-webkit-overflow-scrolling:touch;
  touch-action: pan-y;      /* 移动端：home/设置/统计等整屏的纵向滚动手势授权 */
  overscroll-behavior: contain;
}
.sa-screen[hidden]{display:none !important;}
.sa-screen-head{
  position:sticky;top:0;z-index:2;
  display:flex;align-items:center;gap:10px;
  background:var(--c-bg);
  padding:6px 2px 10px;
}
.sa-screen-head h2{margin:0;font-size:20px;color:var(--c-text);flex:1;}
.sa-screen-head .sa-sub{color:var(--c-text-soft);font-size:13px;}

/* stats */
.sa-stats-list{display:flex;flex-direction:column;gap:6px;}
.sa-stat-row{
  display:flex;justify-content:space-between;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--radius-sm);padding:12px 14px;
}
.sa-stat-row .k{color:var(--c-text-soft);font-size:14px;}
.sa-stat-row .v{color:var(--c-text);font-weight:700;font-size:14px;}

/* achievements */
.sa-list{display:flex;flex-direction:column;gap:8px;}
.sa-ach-card{
  display:flex;align-items:center;gap:12px;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--radius);padding:12px;
}
.sa-ach-card.done{border-color:var(--c-primary);background:var(--c-primary-soft);}
.sa-ach-ico{width:30px;height:30px;color:var(--c-primary);flex:0 0 auto;}
.sa-ach-card:not(.done) .sa-ach-ico{color:var(--c-text-soft);opacity:.7;}
.sa-ach-body{flex:1;min-width:0;}
.sa-ach-name{font-weight:700;font-size:14px;color:var(--c-text);}
.sa-ach-desc{font-size:12px;color:var(--c-text-soft);}
.sa-ach-reward{color:var(--c-warn);font-weight:700;font-size:13px;}
.sa-pager{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:12px;}
.sa-pager span{color:var(--c-text-soft);font-size:13px;}

/* settings */
.sa-settings-list{display:flex;flex-direction:column;gap:8px;}
.sa-set-row{
  display:flex;justify-content:space-between;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--radius);padding:14px;cursor:pointer;
  font:600 15px 'Nunito',sans-serif;color:var(--c-text);text-align:left;
}
.sa-set-row:active{background:var(--c-surface-2);}
.sa-set-k{flex:1;}
.sa-set-ico{ font-size:18px; line-height:1; margin-right:10px; flex-shrink:0; }
.sa-set-v{color:var(--c-text-soft);font-weight:700;}
.sa-coin-row{
  display:flex;align-items:center;gap:8px;justify-content:center;
  background:var(--c-primary-soft);border-radius:var(--radius);
  color:var(--c-primary-dk);font-weight:700;padding:12px;margin-top:4px;
}
.sa-coin-ico{font-size:18px;}

/* gameover */
.sa-screen-gameover{
  align-items:center;justify-content:center;
  background:var(--c-bg);
}
.sa-gameover-card{
  display:flex;flex-direction:column;align-items:center;gap:12px;
  width:100%;max-width:340px;
}
.sa-broken-heart{margin-bottom:4px;}
.sa-gameover-card h2{margin:0;font-size:26px;color:var(--c-text);}
.sa-go-sub{margin:0 0 6px;color:var(--c-text-soft);font-size:14px;}
.sa-go-btn{width:100%;max-width:300px;}

/* ---------- 选关弹层 ---------- */
.sa-modal-overlay{
  position:absolute;top:0;right:0;bottom:0;left:0;z-index:30;
  display:none;align-items:center;justify-content:center;
  background:rgba(20,23,40,.5);
  padding:16px;box-sizing:border-box;
}
.sa-modal{
  width:100%;max-width:340px;max-height:86%;
  background:var(--c-surface);border-radius:var(--radius);
  box-shadow:var(--shadow-md);overflow:hidden;
  display:flex;flex-direction:column;
}
.sa-modal-head{
  display:flex;align-items:center;gap:10px;
  padding:14px 16px;border-bottom:1px solid var(--c-border);
}
.sa-modal-head h2{margin:0;flex:1;font-size:18px;color:var(--c-text);}
.sa-modal-close{
  background:transparent;border:none;font-size:18px;color:var(--c-text-soft);
  cursor:pointer;padding:4px 8px;border-radius:8px;
}
.sa-modal-close:active{background:var(--c-surface-2);}
.sa-level-grid{
  display:grid;grid-template-columns:repeat(5,1fr);gap:8px;
  padding:16px;overflow-y:auto;
}
.sa-level-cell{
  aspect-ratio:1/1;border:1px solid var(--c-border);border-radius:10px;
  background:var(--c-surface-2);cursor:pointer;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  font:700 14px 'Nunito',sans-serif;color:var(--c-text);padding:0;
}
.sa-level-cell.cur{border-color:var(--c-primary);background:var(--c-primary-soft);}
.sa-level-cell.done{color:var(--c-primary-dk);}
.sa-level-cell.locked{opacity:.4;cursor:not-allowed;}
.sa-level-cell:not(.locked):active{background:var(--c-primary-soft);}
.sa-lv-num{font-size:15px;}
.sa-lv-stars{display:flex;gap:1px;}
.sa-lv-s{font-size:8px;color:var(--c-border);font-style:normal;}
.sa-lv-s.on{color:var(--c-warn);}
.sa-modal-pager{
  display:flex;align-items:center;justify-content:center;gap:16px;
  padding:10px 16px;border-top:1px solid var(--c-border);
}
.sa-modal-pager span{color:var(--c-text-soft);font-size:13px;}
/* help (说明) modal body */
.sa-help-body{padding:16px;overflow-y:auto;color:var(--c-text);font-size:14px;line-height:1.7;}
.sa-help-body h3{margin:0 0 6px;font-size:15px;color:var(--c-primary);}
.sa-help-body p{margin:0 0 12px;}
.sa-help-body p:last-child{margin-bottom:0;}

/* language modal */
#saLangModal .sa-modal{max-width:320px;max-height:80vh;overflow-y:auto;-webkit-overflow-scrolling:touch;}
#saLangList{display:flex;flex-direction:column;gap:4px;padding:12px;}
.sa-lang-row{
  text-align:left;background:var(--c-surface-2);border:1px solid var(--c-border);
  border-radius:var(--radius-sm);padding:13px 14px;cursor:pointer;
  font:600 15px 'Nunito',sans-serif;color:var(--c-text);
  display:flex;justify-content:space-between;align-items:center;
}
.sa-lang-row.sel{border-color:var(--c-primary);background:var(--c-primary-soft);color:var(--c-primary-dk);}
.sa-lang-row:active{background:var(--c-primary-soft);}
.sa-lang-check{color:var(--c-primary);font-weight:700;}
#saLangModal h2{margin:0;padding:14px 16px 0;font-size:18px;color:var(--c-text);}
#saLangClose{
  position:absolute;top:10px;right:12px;background:transparent;border:none;
  font-size:18px;color:var(--c-text-soft);cursor:pointer;
}

/* ---------- 成就飘条 ---------- */
.sa-ach-popup{
  position:absolute;top:calc(env(safe-area-inset-top,0px) + 14px);left:0;right:0;
  z-index:40;display:none;align-items:center;justify-content:center;
  pointer-events:none;
}
.sa-ach-popup>div{
  display:flex;align-items:center;gap:10px;
  background:var(--c-surface);border:1px solid var(--c-primary);
  border-radius:var(--radius);box-shadow:var(--shadow-md);
  padding:10px 16px;max-width:320px;
}
.sa-ach-pop-ico{width:26px;height:26px;color:var(--c-primary);flex:0 0 auto;}
.sa-ach-pop-body{flex:1;min-width:0;}
.sa-ach-pop-t{font-size:10px;font-weight:700;color:var(--c-primary);letter-spacing:.5px;}
.sa-ach-pop-n{font-size:13px;font-weight:700;color:var(--c-text);}
.sa-ach-pop-r{color:var(--c-warn);font-weight:700;font-size:13px;}

/* ---------- 金币飘字（由 #saFloaters canvas 飘字替代；此处备用） ---------- */
.sa-floaters{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:35;display:none;}


/* ============================================================
   Phase 3 — 质感与动效打磨（v3.1.43）
   设计目标（玩家体感优先，不引入任何 JS 改动）：
   - 统一动效语言：集中的缓动/时长/阴影令牌，替换各处散乱的 .15s ease
   - 入场微动效：卡片与 Origin Game 各整屏淡入上移，给"加载完成"的确定感
     （说明/胜利弹窗已有 .modal 的 pop，不重复叠加）
   - 可访问性：键盘焦点环 + 尊重 prefers-reduced-motion 全量降级
   - 主题切换不再"啪"地闪一下，而是平滑过渡
   ============================================================ */

/* ---------- 动效令牌（单一事实来源，供全站复用） ---------- */
:root {
  --ease: cubic-bezier(.22, .61, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --ease-bounce: cubic-bezier(.34, 1.56, .64, 1);
  --dur-fast: .14s;
  --dur: .22s;
  --dur-slow: .34s;
  --shadow-lg: 0 10px 30px rgba(20, 23, 40, .16);
}
body.dark { --shadow-lg: 0 10px 30px rgba(0, 0, 0, .55); }

/* ---------- 主题切换平滑（仅作用于无既有 transition 的表层，避免覆盖交互过渡） ---------- */
body,
.game-wrap,
.bottom-nav,
.stat,
.sa-set-row,
.sa-stat-row,
.sa-ach-card,
.sa-lang-row,
select,
input[type="number"] {
  transition: background-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

/* ---------- 键盘焦点环（可访问性，统一 primary 描边；仅键盘聚焦时出现） ---------- */
:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------- 按钮按压 / 悬停质感 ---------- */
.btn:active { transform: translateY(1px) scale(.97); }
.btn-primary:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }

/* ---------- 入场微动效 ---------- */
@keyframes cardIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}
/* 子游戏卡片：每次挂载（切换游戏 / 重开）淡入上移 */
.game-wrap:not(.sa-screen) { animation: cardIn var(--dur) var(--ease-out) both; }

@keyframes screenIn {
  from { transform: translateY(8px); }
  to   { transform: none; }
}
/* Origin Game 整屏（stats/ach/settings/gameover/home）：用 $show 去除 hidden 后触发上移入场。
   注意：早期版用 `from{opacity:0}to{opacity:1}` + `both`，在动画钟未推进的边缘环境
   （无头渲染、部分移动浏览器 / 后台标签节流等）会卡在 opacity:0 → 整屏内容生成但肉眼
   完全空白。改为只动 transform、opacity 始终保持默认 1，从根上保证可见性。 */
.sa-screen:not([hidden]) { animation: screenIn var(--dur) var(--ease-out) both; }

/* ---------- 尊重"减少动态效果"偏好（全量降级，避免前庭不适） ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============================================================
   Phase 4 — 统一首页（sa-screen-home）
   复用既有令牌 / 深色模式 / Phase 3 动效（screenIn 由 .sa-screen
   统一触发，卡片再用 cardIn 做错峰入场）。
   ============================================================ */
.sa-screen-home{
  padding: calc(env(safe-area-inset-top,0px) + 14px) 12px calc(env(safe-area-inset-bottom,0px) + 86px);
}
.sa-home-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:12px; margin-bottom:14px; }
.sa-home-head h2{ margin:0; font-size:26px; font-weight:800; color:var(--c-text); letter-spacing:.2px; }
/* 「全部游戏」与上方设置块的间距（比默认更大，分区更清晰） */
.sa-games-head{ margin-top:30px; justify-content:center; }
.sa-games-head > div{ width:100%; text-align:center; }

.sa-continue{ width:100%; margin-bottom:18px; padding:14px; font-size:16px; font-weight:800; }

.sa-home-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(150px, 1fr));
  gap:14px;
}
.sa-game-card{
  position:relative;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:6px;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  border-radius:var(--radius);
  padding:18px 10px 14px;
  cursor:pointer; text-align:center;
  animation: cardIn var(--dur) var(--ease-out) both;
  transition: transform var(--dur-fast) var(--ease),
              box-shadow var(--dur) var(--ease),
              border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}
.sa-game-card:hover{ box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.sa-game-card:active{ transform: translateY(1px) scale(.97); }
.sa-game-card .ico{
  font-size:34px; line-height:1;
  width:56px; height:56px; display:flex; align-items:center; justify-content:center;
  background:var(--c-surface-2); border-radius:14px;
}
.sa-game-card .nm{ font-weight:700; font-size:14px; color:var(--c-text); }
.sa-game-card .sub{ font-size:12px; color:var(--c-text-soft); min-height:15px; }
.sa-game-card.last{ border-color:var(--c-primary); background:var(--c-primary-soft); }
.sa-game-card.last::after{
  content:'●'; position:absolute; top:8px; right:10px;
  color:var(--c-primary); font-size:10px; line-height:1;
}
/* 网格错峰入场（reduced-motion 下由全局规则归零，不会晕） */
.sa-home-grid .sa-game-card:nth-child(1){animation-delay:.02s}
.sa-home-grid .sa-game-card:nth-child(2){animation-delay:.05s}
.sa-home-grid .sa-game-card:nth-child(3){animation-delay:.08s}
.sa-home-grid .sa-game-card:nth-child(4){animation-delay:.11s}
.sa-home-grid .sa-game-card:nth-child(5){animation-delay:.14s}
.sa-home-grid .sa-game-card:nth-child(6){animation-delay:.17s}
.sa-home-grid .sa-game-card:nth-child(7){animation-delay:.20s}
.sa-home-grid .sa-game-card:nth-child(8){animation-delay:.23s}
.sa-home-grid .sa-game-card:nth-child(9){animation-delay:.26s}
.sa-home-grid .sa-game-card:nth-child(10){animation-delay:.29s}
.sa-home-grid .sa-game-card:nth-child(11){animation-delay:.32s}
.sa-home-grid .sa-game-card:nth-child(12){animation-delay:.35s}

/* 首页嵌入式设置：标题复用 .sa-home-head（与「全部游戏」同款 26px 字体），
   内容行移出白色卡片外壳，直接作为列表项呈现 */
.sa-set-section-head{ margin-top:18px; }

/* ============================================================
   顶栏改造：☰ 菜单（左） + 标题 + ⚙ 设置（右），替代横向滑动游戏选择
   ============================================================ */
.app-bar-btn{
  flex-shrink:0;width:42px;height:42px;border-radius:50%;
  background:var(--c-surface-2);border:1px solid var(--c-border);color:var(--c-text);
  font-size:20px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 1px 4px rgba(20,23,40,.12);
  transition:transform .15s ease,background .15s ease,color .15s ease,border-color .15s ease;
}
.app-bar-btn:active{transform:scale(.94);}
.app-bar-ico{line-height:1;}
.app-bar-title{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:center;font-weight:800;font-size:17px;color:var(--c-text);letter-spacing:.2px;}

/* ---- 左侧游戏选择抽屉 ---- */
.sa-menu-scrim{position:absolute;top:0;right:0;bottom:0;left:0;z-index:55;background:rgba(15,18,34,.42);
  opacity:0;transition:opacity .26s ease;}
.sa-menu-scrim.open{opacity:1;}
.sa-menu-scrim[hidden]{display:none;}
.sa-menu-drawer{position:absolute;top:0;bottom:0;left:0;z-index:60;
  width:min(82%,320px);background:var(--c-surface);border-right:1px solid var(--c-border);
  box-shadow:4px 0 18px rgba(20,23,40,.18);
  transform:translateX(-104%);transition:transform .28s cubic-bezier(.22,.61,.36,1);
  display:flex;flex-direction:column;box-sizing:border-box;
  padding:calc(env(safe-area-inset-top,0px) + 8px) 10px calc(env(safe-area-inset-bottom,0px) + 12px);}
.sa-menu-drawer.open{transform:translateX(0);}
.sa-menu-drawer[hidden]{display:none;}
.sa-menu-head{display:flex;align-items:center;justify-content:space-between;
  padding:6px 6px 12px;border-bottom:1px solid var(--c-border);margin-bottom:8px;}
.sa-menu-brand{font-weight:800;font-size:17px;color:var(--c-primary);letter-spacing:.2px;}
.sa-menu-close{width:34px;height:34px;border-radius:50%;background:var(--c-surface-2);
  border:1px solid var(--c-border);color:var(--c-text);font-size:16px;
  display:flex;align-items:center;justify-content:center;}
.sa-menu-close:active{transform:scale(.94);}
.sa-menu-list{display:flex;flex-direction:column;gap:4px;overflow-y:auto;-webkit-overflow-scrolling:touch;min-height:0;flex:1 1 auto;}
.sa-menu-item{display:flex;align-items:center;gap:12px;padding:12px 12px;border-radius:12px;
  background:transparent;border:1px solid transparent;color:var(--c-text);
  font-size:15px;font-weight:700;text-align:left;transition:background .15s ease,border-color .15s ease;}
.sa-menu-item:active{background:var(--c-surface-2);}
.sa-menu-item.active{background:var(--c-primary);color:#fff;border-color:transparent;}
.sa-menu-ico{font-size:20px;line-height:1;width:24px;text-align:center;flex-shrink:0;}
.sa-menu-nm{flex:1;}
.sa-menu-home{color:var(--c-primary);}
.sa-menu-last{box-shadow:inset 0 0 0 1px var(--c-primary);}
.sa-menu-foot{margin-top:12px;padding-top:12px;border-top:1px solid var(--c-border);display:flex;flex-direction:column;gap:2px;flex-shrink:0;}
.sa-menu-link{display:block;padding:9px 12px;font-size:13px;color:#6b7280;text-decoration:none;border-radius:10px;transition:background .15s ease;}
.sa-menu-link:active{background:var(--c-surface-2);}

/* 设置弹窗内的列表：可滚动，避免内容超出弹窗 */
.sa-settings-list{padding:8px 12px 14px;overflow-y:auto;flex:1 1 auto;min-height:0;}