.sea-boards h2{font-size:1rem;margin:0 0 12px}.board-battleship{border-color:#287771;background:#287771}.board-battleship .ludia-cell{background:#e0f2f0;color:#17534e}.board-battleship .has-ship{background:#408781;color:#fff}.board-battleship .shot-hit{background:#ffddcb;color:#853416}.board-battleship .ship-sunk{background:#286760;color:#fff}.sea-legend{display:flex;gap:18px;font-size:.75rem;margin:14px 0;flex-wrap:wrap}.own-sea{margin-top:22px;border:1px solid var(--line);border-radius:16px;padding:14px}.own-sea summary{font-size:.85rem;min-height:44px;cursor:pointer}.own-sea .ludia-board{max-width:360px}.ship-actions{display:grid;gap:10px;margin-top:20px}.ship-actions .button{font-size:.8rem;padding:10px}.stat-note{margin:18px 0;font-size:.9rem;font-weight:700}.board-sudoku{border-color:#5c5378;background:#5c5378;gap:0;border-radius:14px;max-width:450px}.board-sudoku .ludia-row{gap:0}.board-sudoku .ludia-cell{border-radius:0;background:#fffdf4;border:1px solid #b6adc8;position:relative;font-size:clamp(21px,5vw,42px)}.board-sudoku .given{background:#e4e0ef}.board-sudoku .box-right{border-right:4px solid #5c5378}.board-sudoku .box-bottom{border-bottom:4px solid #5c5378}.board-sudoku .cell-selected{background:#fff0b0;box-shadow:inset 0 0 0 4px #936422}.board-sudoku .conflict{background:#ffe0d6}.shape-1{color:#844827}.shape-2{color:#376d61}.shape-3{color:#405a9b}.shape-4{color:#7e3d7a}.shape-5{color:#805412}.shape-6{color:#7c3d4a}.shape-number{position:absolute;bottom:2px;right:3px;font-size:12px}.conflict-mark{position:absolute;top:2px;right:3px;font-size:14px;border:1px solid currentColor;border-radius:50%;width:16px;height:16px;display:grid;place-items:center;color:#842f13}.sudoku-notes{font-size:14px;color:#453959;line-height:1.3}.shape-palette{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin:18px 0}.shape-palette .button{font-size:27px;min-width:48px;padding:8px 12px;line-height:1}.sudoku-tools{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.sudoku-tools .button{font-size:.78rem;padding:10px 14px}.sudoku-tools [aria-pressed=true]{background:#e9e2fa;border-color:#584690}.high-contrast .board-sudoku .given{background:#c9c3d9}.high-contrast .shape{color:#27213a}
@media(max-width:650px){.shape-palette{gap:6px}.shape-palette .button{min-width:42px;min-height:48px;padding:7px 10px}.sudoku-tools .button{font-size:.75rem;padding:9px 12px}.sudoku-notes{font-size:11px}.board-battleship .ludia-cell{font-size:26px}}
.tetris-stage{display:grid;grid-template-columns:minmax(0,300px) minmax(80px,1fr);gap:20px;justify-content:center;max-width:460px;margin:auto}.board-tetris{border:6px solid #37334f;border-radius:12px;background:#29253d;gap:1px}.board-tetris .ludia-row{gap:1px}.board-tetris .ludia-cell{background:#363149;border-radius:2px;font-size:12px;color:#fff8;line-height:1}.board-tetris .tetromino-I,.tetromino-preview .tetromino-I{background:#2695a5}.board-tetris .tetromino-O,.tetromino-preview .tetromino-O{background:#d4a832}.board-tetris .tetromino-T,.tetromino-preview .tetromino-T{background:#9e74ca}.board-tetris .tetromino-S,.tetromino-preview .tetromino-S{background:#529269}.board-tetris .tetromino-Z,.tetromino-preview .tetromino-Z{background:#cc6559}.board-tetris .tetromino-J,.tetromino-preview .tetromino-J{background:#557bba}.board-tetris .tetromino-L,.tetromino-preview .tetromino-L{background:#ce8a42}.board-tetris .ludia-cell[class*=tetromino-]{box-shadow:inset 0 -3px 0 #0003;border:1px solid #fff4}.board-tetris .ghost-block{border:2px dashed #d1c9e5}.board-tetris .falling-block{border:1px solid #fff}.tetris-previews h2{font-size:.75rem;margin:10px 0}.tetris-previews h2:not(:first-child){margin-top:30px}.tetromino-preview{display:grid;grid-template-columns:repeat(var(--piece-cols),1fr);gap:2px;width:85px;height:65px;align-content:center}.tetromino-preview i{width:19px;height:19px;border-radius:3px}.empty-hold{font-size:.68rem;color:var(--muted)}.tetris-controls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;max-width:460px;margin:18px auto 0}.tetris-controls .button{font-size:.8rem;padding:10px 8px;min-height:48px}.keyboard-note{font-size:.68rem;color:var(--muted);margin:12px 0;text-align:center}.tetris-surface:focus-visible{outline:3px solid var(--green);outline-offset:5px;border-radius:16px}.course-visual .tetris-stage{grid-template-columns:minmax(0,220px) 90px;gap:14px}.course-visual .board-tetris{max-width:220px}.course-visual .tetris-controls{max-width:390px}
@media(max-width:650px){.tetris-stage{grid-template-columns:minmax(0,220px) 74px;gap:12px;max-width:330px}.tetris-previews h2{font-size:.66rem}.tetromino-preview{width:70px}.tetromino-preview i{width:15px;height:15px}.tetris-controls{gap:6px}.tetris-controls .button{font-size:.75rem;padding:9px 5px}.course-visual .tetris-stage{grid-template-columns:minmax(0,180px) 75px}.course-visual .board-tetris{max-width:180px}.board-tetris .ludia-cell{font-size:9px}}
.domino-table{background:#e3efe5;border:2px solid #96b3a0;border-radius:24px;padding:22px;min-height:220px}.domino-table h2,.domino-hand h2{font-size:1rem;margin-bottom:14px}.domino-ends{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.72rem;font-weight:700;margin-bottom:18px}.domino-chain{list-style:none;margin:0;padding:0;display:flex;gap:6px;flex-wrap:wrap;align-items:center}.domino-chain li{display:flex;align-items:center}.domino-chain li:not(:last-child):after{content:'›';font-size:18px;color:#52765c;margin-left:5px}.domino-tile{display:inline-flex;border:2px solid #355140;border-radius:8px;background:#fffdf2;color:#294b37;padding:4px;box-shadow:2px 3px 0 #35514055;gap:5px}.domino-half{width:29px;height:37px;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,7px);gap:2px;position:relative;padding-bottom:12px}.domino-half:first-child{border-right:1px solid #87a18f;padding-right:5px;width:34px}.domino-half i{width:6px;height:6px}.domino-half .pip{background:#294b37;border-radius:50%}.domino-half small{position:absolute;bottom:-1px;left:10px;font:bold 10px var(--font)}.domino-hand{margin-top:24px;padding:22px;border:1px solid var(--line);border-radius:24px;background:white}.domino-hand p{font-size:.85rem}.hand-tiles{display:flex;flex-wrap:wrap;gap:12px}.hand-tile{border:3px solid transparent;background:transparent;border-radius:12px;padding:4px;display:inline-flex;min-height:58px;align-items:center}.hand-tile.tile-selected{border-color:#6549a0;background:#ede4fb}.hand-tile.tile-hint{border:3px dashed #906521}.domino-play-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.domino-play-actions .button{font-size:.76rem;padding:10px 12px;flex:1 1 40%}.empty-table{font-size:.85rem;color:#365a43;text-align:center;margin:45px 0}.handover{background:#fff;border:1px solid var(--line);border-radius:24px;padding:30px;margin-top:22px;text-align:center}.handover>span{font-size:42px;color:var(--green)}.handover h2{font-size:1.3rem;margin:14px 0}.handover p{font-size:.85rem;color:var(--muted)}.domino-wait{margin:26px;text-align:center}
@media(max-width:650px){.domino-table{padding:16px;min-height:180px}.domino-hand{padding:18px}.hand-tiles{gap:8px}.domino-ends{font-size:.66rem;gap:8px}.domino-chain .domino-tile{scale:.87;transform-origin:left center;margin-right:-10px}.domino-chain{gap:4px}.domino-chain li:not(:last-child):after{margin-left:0}.course-visual .domino-table{min-height:150px}}
.board-checkers{border-color:#4e405f;background:#4e405f;gap:0;max-width:520px;border-radius:14px}.board-checkers .ludia-row{gap:0}.board-checkers .ludia-cell{border-radius:0;position:relative}.board-checkers .checker-light{background:#f6ebdf}.board-checkers .checker-dark{background:#94809f}.checker{width:73%;height:73%;border-radius:50%;display:grid;place-items:center;font-size:clamp(16px,3.5vw,31px);border:2px solid;box-shadow:0 3px 0 #33223c80;position:relative;z-index:1}.checker-1{background:#fff5de;color:#5c3751;border-color:#5c3751}.checker-2{background:#573e60;color:#fff4de;border-color:#fff4de}.checker-coordinate{position:absolute;bottom:2px;left:3px;font:700 9px var(--font);color:#2a1f36}.checker-dark .checker-coordinate{color:#1f1529}.checker-selected{box-shadow:inset 0 0 0 4px #f9df62!important}.move-dot{position:absolute;width:30%;height:30%;border:3px solid #fff4cc;background:#413246;border-radius:50%;z-index:2}.checker-direction{font-size:.7rem;text-align:center;margin:10px 0}.checker-list{margin-top:16px;padding:16px;border:1px solid var(--line);border-radius:16px;background:#fff;font-size:.85rem}.checker-list summary{cursor:pointer;min-height:44px}.checker-list label{display:block;margin:12px 0}.checker-list .button{width:100%;margin-top:14px}.variant-note{font-size:.8rem;color:var(--muted)}.board-checkers .hinted{outline:3px dashed #fce668;outline-offset:-4px}.high-contrast .checker-dark{background:#746283}.high-contrast .checker-coordinate{background:#fff3d9;color:#281c33}
@media(max-width:650px){.checker{width:77%;height:77%;font-size:22px}.checker-coordinate{font-size:8px;bottom:1px;left:2px}.course-visual .board-checkers{max-width:360px}.move-dot{border-width:2px}.board-checkers{border-width:5px}}
@media(forced-colors:active){.checker{forced-color-adjust:none}.checker-selected{outline:4px solid Highlight;outline-offset:-4px}.move-dot{background:Highlight;forced-color-adjust:none}.tetromino-preview i{border:1px solid CanvasText}.domino-tile,.domino-half{border-color:CanvasText}.domino-half .pip{background:CanvasText}}
.coordinate-picker{width:100%;max-width:520px;border:1px solid var(--line);background:#fff;border-radius:16px;padding:16px;margin:18px auto;font-size:.85rem}.coordinate-picker summary{min-height:44px;cursor:pointer;padding-block:8px}.coordinate-fields{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:12px 0}.coordinate-fields label{min-width:0}.coordinate-picker>.button{width:100%;margin-top:8px}