*{box-sizing:border-box}body{margin:0;background:#13283b;color:#f7fbff;font-family:system-ui,-apple-system,sans-serif}button,select,a{touch-action:manipulation}button,select{font:inherit;border:0;border-radius:10px;min-height:44px;padding:8px 12px;background:#edf8fc;color:#173e59;cursor:pointer}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #ffd750;outline-offset:3px}[hidden]{display:none!important}#slideApp{max-width:1100px;margin:auto;padding:12px max(12px,env(safe-area-inset-right)) 16px max(12px,env(safe-area-inset-left))}.game-heading{display:flex;align-items:center;gap:14px;margin-bottom:12px}.game-heading h1{font-size:20px;margin:0;color:#ffe097}.game-heading span{font-size:12px;color:#b6cad7}.game-heading button{margin-left:auto;font-size:12px}.course-info{display:flex;gap:9px;align-items:center;margin:8px 0}.course-info h2{font-size:16px;margin:0;flex:1}#difficulty,#gravityLabel{font-size:12px;border-radius:20px;padding:5px 8px;background:#284355;white-space:nowrap}#board{position:relative;aspect-ratio:16/9;width:100%;border:2px solid #4e6575;border-radius:14px;overflow:hidden;background:#d4eaf3}canvas{width:100%;height:100%;display:block;touch-action:none;user-select:none}#notice{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#13283bc7;padding:20px;text-align:center}#resultText{font-size:24px;font-weight:700;max-width:90%}#notice>div{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}#next{background:#ffcf42}.readout{display:flex;justify-content:space-between;gap:10px;font-size:12px;min-height:28px;padding:7px 2px;color:#e0edf5}#starStatus{color:#ffdc64;white-space:nowrap}#gameControls{max-width:550px;margin:auto}.start-row{display:flex;justify-content:center;align-items:center;gap:10px}.start-row>button:not(.image-button){font-size:12px}.image-button{display:block;border:0;padding:0;border-radius:0;background-color:transparent;background-image:url('/_optimized/games-20261019/7756d93d2f255646d8ab.webp');background-repeat:no-repeat;cursor:pointer;min-width:0;min-height:44px;filter:drop-shadow(0 2px 2px #0005)}.image-button:active{transform:translateY(2px)}#start{width:178px;aspect-ratio:1231/456;background-size:176.441917% 158.771930%;background-position:49.734325% 5.970149%}.image-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;margin-top:6px}#undo{aspect-ratio:543/228;background-size:400% auto;background-position:.736648% 96.774194%}#reset{aspect-ratio:555/228;background-size:391.351351% auto;background-position:34.322820% 96.774194%}#gameList{aspect-ratio:550/232;background-size:394.909091% auto;background-position:68.434032% 97.560976%}#chooseCourse{aspect-ratio:512/226;background-size:424.218750% auto;background-position:100% 96.385542%}.tools{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:8px;font-size:12px}.tools button,.tools select{font-size:12px}.tools label{white-space:nowrap}.help{font-size:12px;line-height:1.8;margin-top:12px;color:#c8dbe9}.help summary{cursor:pointer;color:#ffdc64}#hintText{padding:12px;background:#284355;border-radius:10px;font-size:14px;line-height:1.6}#courseScreen h2{color:#ffe097}#courseScreen>p{font-size:13px;color:#bfd3df}#courseCards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.course-card{padding:0;overflow:hidden;background:#e9f4f5;text-align:left;border:2px solid #abc5d0}.course-card .thumbnail{aspect-ratio:16/9;display:block;width:100%;background:#cadfe9}.course-card .card-label{display:block;padding:10px;font-size:13px;font-weight:700}.card-sub{font-size:11px;display:block;font-weight:400;margin-top:4px;color:#466476}dialog{width:min(92vw,520px);max-height:85svh;overflow:auto;background:#13283b;color:white;border:2px solid #c9a451;border-radius:18px;padding:22px}dialog::backdrop{background:#000b}dialog h2{color:#ffdf85}dialog>a{color:#c9e1f4;display:block;font-size:12px;margin:20px 0}.bgm-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:12px 0;padding:12px;background:#284355;border-radius:12px;font-size:14px}.bgm-row button[aria-pressed=true]{background:#ffcf56}#slideApp:fullscreen{max-width:none;overflow:auto;background:#13283b}#slideApp:fullscreen #board{width:min(100%,calc((100svh - 220px)*16/9));margin:auto}@media(max-width:700px){#courseCards{grid-template-columns:repeat(2,minmax(0,1fr))}.game-heading span{display:none}.game-heading h1{font-size:16px}.course-info h2{font-size:13px}.course-info{flex-wrap:wrap}#difficulty,#gravityLabel{font-size:10px}.start-row{gap:6px}#start{width:150px}.tools{gap:5px}.tools button{padding:8px;font-size:11px}#slideApp{padding-top:8px}.image-row{gap:2px}#resultText{font-size:18px}.readout{font-size:11px}}@media(max-height:520px) and (orientation:landscape){#slideApp{padding-top:4px}.game-heading{display:none}.course-info{margin:2px 0}#board{width:min(100%,calc((100svh - 160px)*16/9));margin:auto}.readout{max-width:600px;margin:auto;min-height:22px;padding:3px}#gameControls{max-width:650px;display:grid;grid-template-columns:1fr 1fr;gap:4px}.start-row{gap:4px}#start{width:110px}.image-row{margin:0}.tools{grid-column:1/-1;margin:0}.tools button,.tools select{min-height:36px}.help{margin-top:6px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}

/* Individual crops preserve the full artwork inside the 44px touch target. */
.image-button{background-size:contain!important;background-position:center!important}#start{background-image:url('/_optimized/games-20261019/c3389a882a643d430c68.webp')}#undo{background-image:url('/_optimized/games-20261019/6880b65feb7f7d3d353e.webp')}#reset{background-image:url('/_optimized/games-20261019/85bd80f3dd81652a9636.webp')}#gameList{background-image:url('/_optimized/games-20261019/727b18f12ebbf8259476.webp')}#chooseCourse{background-image:url('/_optimized/games-20261019/aa2ce079b0086c356d0f.webp')}