:root{--text:#6b6068;--text-h:#4a4048;--bg:#f3ede4;--bg-panel:#faf6ef;--accent:#e8a2b8;--accent-strong:#d888a2;--good:#7fae7f;--good-strong:#5f9161;--bad:#d99090;--bad-strong:#c47272;--shadow-soft:0 8px 0 #4a40481a;--shadow-card:0 6px 16px #4a404814;--sans:"Zen Maru Gothic", system-ui, "Hiragino Maru Gothic ProN", sans-serif;font:18px/145% var(--sans);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--text:#cdc4c9;--text-h:#ece5e8;--bg:#2a2530;--bg-panel:#35303b;--accent:#c98ba0;--accent-strong:#b97690;--good:#6f9d72;--good-strong:#588a5c;--bad:#b97b7b;--bad-strong:#a56262;--shadow-soft:0 8px 0 #00000040;--shadow-card:0 6px 16px #0000004d}}:root[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--text:#6b6068;--text-h:#4a4048;--bg:#f3ede4;--bg-panel:#faf6ef;--accent:#e8a2b8;--accent-strong:#d888a2;--good:#7fae7f;--good-strong:#5f9161;--bad:#d99090;--bad-strong:#c47272;--shadow-soft:0 8px 0 #4a40481a;--shadow-card:0 6px 16px #4a404814}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--text:#cdc4c9;--text-h:#ece5e8;--bg:#2a2530;--bg-panel:#35303b;--accent:#c98ba0;--accent-strong:#b97690;--good:#6f9d72;--good-strong:#588a5c;--bad:#b97b7b;--bad-strong:#a56262;--shadow-soft:0 8px 0 #00000040;--shadow-card:0 6px 16px #0000004d}*{box-sizing:border-box}body{background:var(--bg);min-height:100svh;margin:0}#root{flex-direction:column;min-height:100svh;display:flex}h1,h2{font-family:var(--sans);color:var(--text-h);margin:0;font-weight:700}button{font-family:var(--sans);cursor:pointer}p{margin:0}.app-shell{flex-direction:column;flex:1;gap:24px;width:100%;max-width:720px;margin:0 auto;padding:24px 20px 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.15s;display:flex}.game-card:hover{transform:translateY(-4px)scale(1.02)}.game-card:active{transform:translateY(1px)scale(.98)}.game-card-emoji{font-size:52px;line-height:1}.game-card-title{color:var(--text-h);font-size:23px;font-weight:700}.game-card-desc{color:var(--text);text-align:center;font-size:16px}.primary-button{background:var(--accent);color:#fff;box-shadow:var(--shadow-soft);border:none;border-radius:999px;padding:16px 32px;font-size:18px;font-weight:700;transition:transform .1s,background .15s}.primary-button:hover{background:var(--accent-strong)}.primary-button:active{box-shadow:none;transform:translateY(4px)}.back-button{border:2px solid color-mix(in srgb, var(--text) 25%, transparent);color:var(--text);background:0 0;border-radius:999px;padding:10px 20px;font-size:14px;font-weight:700;transition:background .15s,border-color .15s}.back-button:hover{background:color-mix(in srgb, var(--text) 8%, transparent);border-color:color-mix(in srgb, var(--text) 45%, transparent)}.back-button.small{padding:10px 18px;font-size:22px}.picker-screen{text-align:center;flex-direction:column;align-items:center;gap:24px;width:100%;max-width:640px;margin:auto;display:flex}.picker-screen h2{margin-bottom:12px}.grade-grid{grid-template-columns:repeat(2,1fr);gap:20px;width:100%;display:grid}.difficulty-grid{flex-direction:column;gap:18px;width:100%;display:flex}.speed-intro h2{font-size:34px;line-height:1.35}.speed-intro p{font-size:19px;line-height:1.5}.speed-start-button{white-space:nowrap;padding:22px 48px;font-size:26px}.countdown-screen{flex:1;justify-content:center;align-items:center;display:flex}.countdown-number{color:var(--accent);font-size:clamp(140px,35vw,240px);font-weight:900;line-height:1;animation:.5s countdown-pop}.countdown-number.countdown-go{font-size:clamp(64px,18vw,110px)}@keyframes countdown-pop{0%{opacity:0;transform:scale(.5)}60%{opacity:1;transform:scale(1.15)}to{opacity:1;transform:scale(1)}}.grade-button{background:var(--bg-panel);border:3px solid var(--accent);color:var(--text-h);box-shadow:var(--shadow-card);white-space:nowrap;border-radius:24px;padding:28px 18px;font-size:22px;font-weight:700;transition:transform .15s,box-shadow .15s,background .15s}.grade-button:hover{background:color-mix(in srgb, var(--accent) 18%, var(--bg-panel));transform:translateY(-2px);box-shadow:0 10px 20px #4a404824}.grade-button:active{transform:scale(.97)}.quiz-screen{flex-direction:column;flex:1;gap:24px;display:flex}.quiz-header{justify-content:space-between;align-items:center;gap:8px;margin-top:16px;display:flex}.quiz-body{flex-direction:column;flex:1;gap:32px;margin-top:80px;display:flex}.quiz-answer-area{flex-direction:column;gap:16px;margin:auto 0;display:flex}.progress-badge{background:var(--bg-panel);box-shadow:var(--shadow-card);border-radius:999px;padding:10px 22px;font-size:20px;font-weight:700}.quiz-question{background:var(--bg-panel);text-align:center;color:var(--text-h);box-shadow:var(--shadow-card);border-radius:24px;padding:40px 24px;font-size:42px;font-weight:700;line-height:1.4;transition:background .2s}.quiz-question.correct{background:color-mix(in srgb, var(--good) 22%, var(--bg-panel))}.quiz-question.wrong{background:color-mix(in srgb, var(--bad) 22%, var(--bg-panel))}.choice-grid{flex-direction:column;gap:14px;display:flex}.choice-button{background:var(--bg-panel);border:3px solid var(--accent);color:var(--text-h);box-shadow:var(--shadow-card);border-radius:20px;padding:24px;font-size:30px;font-weight:700;transition:transform .15s,background .15s,box-shadow .15s}.choice-button:hover:not(:disabled){background:color-mix(in srgb, var(--accent) 18%, var(--bg-panel));transform:translateY(-2px);box-shadow:0 10px 20px #4a404824}.choice-button:active:not(:disabled){transform:scale(.96)}.choice-button:disabled{opacity:.85}.choice-button.is-correct{background:var(--good);border-color:var(--good-strong);color:#fff;opacity:1}.choice-button.is-wrong{background:var(--bad);border-color:var(--bad-strong);color:#fff;opacity:1}.feedback-badge{text-align:center;visibility:visible;border-radius:16px;padding:14px;font-size:22px;font-weight:700}.feedback-badge.correct{background:var(--good);color:#fff}.feedback-badge.wrong{background:var(--bad);color:#fff}.feedback-badge.hidden{visibility:hidden;background:0 0}.memory-screen{flex-direction:column;flex:1;gap:16px;min-height:0;display:flex}.memory-screen .quiz-header{width:100%;max-width:680px;margin-left:auto;margin-right:auto}.memory-grid{--gap:16px;--cell:min(calc((100vw - 80px - (var(--cols) - 1) * var(--gap)) / var(--cols)), calc((100dvh - 200px - (var(--rows) - 1) * var(--gap)) / var(--rows)), 180px);grid-template-columns:repeat(var(--cols), var(--cell));grid-auto-rows:var(--cell);gap:var(--gap);flex:1;place-content:center;display:grid}.memory-card{background:color-mix(in srgb, var(--accent) 55%, var(--bg-panel));width:100%;height:100%;box-shadow:var(--shadow-card);font-size:min(calc(var(--cell) * .5), 84px);border:none;border-radius:14px;justify-content:center;align-items:center;transition:transform .2s,background .2s,box-shadow .15s;display:flex}.memory-card:not(.open):not(.matched):hover{transform:translateY(-3px)scale(1.03);box-shadow:0 10px 18px #4a40482e}.memory-card.open{background:var(--bg-panel);transform:rotateY(0)scale(1.03)}.memory-card.matched{background:color-mix(in srgb, var(--good) 65%, var(--bg-panel));opacity:.95}.memory-card-face{line-height:1}.flash-screen{flex-direction:column;gap:16px;display:flex}.flash-instruction{text-align:center;color:var(--text-h);font-size:24px;font-weight:700}.flash-grid{grid-template-columns:repeat(3,1fr);gap:12px;display:grid}.flash-cell{aspect-ratio:1;border:3px dashed color-mix(in srgb, var(--accent) 60%, var(--bg-panel));background:var(--bg-panel);color:var(--text-h);border-radius:18px;justify-content:center;align-items:center;font-size:clamp(32px,10vw,56px);font-weight:900;line-height:1;transition:transform .15s,box-shadow .15s;display:flex}.flash-cell:not(.empty):not(:disabled):hover{transform:scale(1.05);box-shadow:0 8px 16px #4a404824}.flash-cell.empty{box-shadow:none;background:0 0;border:none}.flash-cell.tapped{background:var(--good);border-style:solid;border-color:var(--good-strong);color:#fff}.result-screen{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:28px;padding:40px 20px;display:flex;position:relative}.result-screen h2{font-size:44px}.star-rating{gap:10px;display:flex}.result-detail{color:var(--text);font-size:22px}.result-actions{flex-direction:column;gap:14px;width:100%;max-width:320px;margin-top:12px;display:flex}.result-actions .primary-button,.result-actions .back-button{padding:20px 32px;font-size:22px}.confetti{pointer-events:none;height:6px;position:absolute;inset:-20px 0 auto}.confetti:before,.confetti:after{content:"🎉";font-size:24px;animation:1.6s ease-in infinite fall;position:absolute}.confetti:before{animation-delay:.1s;left:20%}.confetti:after{animation-delay:.4s;right:20%}@keyframes fall{0%{opacity:1;transform:translateY(0)rotate(0)}to{opacity:0;transform:translateY(280px)rotate(180deg)}}@media (width<=480px){.quiz-question{padding:28px 16px;font-size:24px}.choice-button{padding:16px;font-size:20px}.progress-badge{padding:8px 16px;font-size:16px}.home-header{padding-right:64px}.home-header h1{font-size:34px}.speed-intro h2{font-size:26px}.speed-start-button{padding:18px 32px;font-size:22px}}.pause-overlay{z-index:20;background:#1e1a2073;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.pause-modal{background:var(--bg-panel);text-align:center;box-shadow:var(--shadow-card);border-radius:28px;flex-direction:column;align-items:center;gap:20px;width:100%;max-width:320px;padding:36px 28px;display:flex}.pause-actions{flex-direction:column;gap:12px;width:100%;display:flex}.pause-theme-row{border-top:1px solid color-mix(in srgb, var(--text) 15%, transparent);width:100%;color:var(--text);justify-content:space-between;align-items:center;padding-top:8px;font-size:14px;display:flex}.theme-toggle-inline{background:var(--bg);width:40px;height:40px;box-shadow:var(--shadow-card);border:none;border-radius:50%;justify-content:center;align-items:center;font-size:18px;transition:transform .15s;display:flex}.theme-toggle-inline:hover{transform:scale(1.08)}.kanji-display{font-size:96px;line-height:1.1}.kanji-yomi-badge{color:#fff;border-radius:999px;margin-bottom:10px;padding:4px 18px;font-size:16px;font-weight:700;display:inline-block}.kanji-yomi-badge.on{background:var(--accent-strong)}.kanji-yomi-badge.kun{background:var(--good-strong)}.clock-instruction{text-align:center;color:var(--text-h);font-size:24px;font-weight:700}.clock-display-wrap{justify-content:center;display:flex}.analog-clock{filter:drop-shadow(0 6px 16px #4a40481f)}.clock-face{fill:var(--bg-panel);stroke:var(--accent);stroke-width:4px}.clock-tick{stroke-linecap:round}.clock-tick-hour{stroke:var(--text-h);stroke-width:4px}.clock-tick-minute{stroke:color-mix(in srgb, var(--text) 55%, transparent);stroke-width:1.5px}.clock-hand{stroke-linecap:round}.clock-hand-hour{stroke:var(--text-h);stroke-width:7px}.clock-hand-minute{stroke:var(--accent-strong);stroke-width:5px}.clock-center{fill:var(--text-h)}.stroop-instruction{text-align:center;color:var(--text-h);font-size:22px;font-weight:700}.stroop-word{font-size:64px;font-weight:900;line-height:1.2}.stroop-choice-grid{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}.stroop-choice-button{background:var(--stroop-color);border:4px solid color-mix(in srgb, var(--stroop-color) 70%, black 20%);color:#fff;box-shadow:var(--shadow-card);border-radius:20px;padding:24px;font-size:24px;font-weight:700;transition:transform .15s,box-shadow .15s}.stroop-choice-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 10px 20px #4a404829}.stroop-choice-button:active:not(:disabled){transform:scale(.96)}.stroop-choice-button:disabled{opacity:.85}.stroop-choice-button.is-correct{outline:5px solid var(--good-strong);outline-offset:3px}.stroop-choice-button.is-wrong{outline:5px solid var(--bad-strong);outline-offset:3px}.oddone-grid{grid-template-columns:repeat(var(--oddone-size), 1fr);flex:1;align-content:center;gap:10px;display:grid}.oddone-cell{aspect-ratio:1;border:3px solid color-mix(in srgb, var(--accent) 50%, var(--bg-panel));background:var(--bg-panel);color:var(--text-h);border-radius:14px;justify-content:center;align-items:center;font-size:clamp(20px,6vw,44px);font-weight:700;line-height:1;transition:transform .15s,box-shadow .15s;display:flex}.oddone-cell:hover:not(:disabled){transform:scale(1.05)}.oddone-cell:disabled{opacity:.9}.oddone-cell.is-correct{background:color-mix(in srgb, var(--good) 40%, var(--bg-panel));border-color:var(--good-strong)}.oddone-cell.is-wrong{background:color-mix(in srgb, var(--bad) 40%, var(--bg-panel));border-color:var(--bad-strong)}.simon-grid{flex:1;grid-template-columns:repeat(2,1fr);gap:16px;width:100%;max-width:480px;margin:auto;display:grid}.simon-panel{aspect-ratio:1;background:color-mix(in srgb, var(--simon-color) 55%, var(--bg-panel));box-shadow:var(--shadow-card);border:none;border-radius:24px;transition:transform .1s,background .1s,box-shadow .1s}.simon-panel:active:not(:disabled){transform:scale(.96)}.simon-panel.active{background:var(--simon-color);box-shadow:0 0 0 6px color-mix(in srgb, var(--simon-color) 40%, transparent)}.simon-panel:disabled{cursor:default}.cups-stage-wrap{flex:1;justify-content:center;align-items:center;display:flex;overflow:hidden}.cups-stage{--cups-scale:min(1, calc((100vw - 40px) / var(--stage-w)));width:calc(var(--stage-w) * var(--cups-scale));height:calc(var(--stage-h) * var(--cups-scale));flex-shrink:0;position:relative;overflow:visible}.cups-stage-inner{width:var(--stage-w);height:var(--stage-h);transform:scale(var(--cups-scale));transform-origin:0 0;position:absolute;top:0;left:0}.cup-btn{z-index:2;will-change:transform;transform:translate(var(--cup-x), var(--cup-y));background:0 0;border:none;padding:0;transition-property:transform;transition-timing-function:ease-in-out;position:absolute;bottom:0;left:0}.cup-btn.is-arcing{animation-name:cup-arc;animation-timing-function:ease-in-out;animation-fill-mode:forwards;animation-duration:var(--cup-duration,.3s);transition-property:none}@keyframes cup-arc{0%{transform:translate(var(--cup-x-from), var(--cup-y))}50%{transform:translate(var(--cup-mid-x), var(--cup-arc-y))}to{transform:translate(var(--cup-x), var(--cup-y))}}.cup-btn:disabled{cursor:default}.cup-btn:hover:not(:disabled) .cup-body{fill:color-mix(in srgb, var(--accent) 85%, var(--bg-panel))}.cup-body{fill:color-mix(in srgb, var(--accent) 70%, var(--bg-panel));stroke:var(--accent-strong);stroke-width:3px;transition:fill .15s}.cup-btn.is-correct .cup-body{fill:var(--good);stroke:var(--good-strong)}.cup-btn.is-wrong .cup-body{fill:var(--bad);stroke:var(--bad-strong)}.cup-stripe{fill:#ffffff8c}.cups-die{z-index:1;will-change:transform;position:absolute;bottom:2px;left:0}.die-body{fill:#fff;stroke:#b0a8ac;stroke-width:2px}.die-pip{fill:var(--bad-strong)}