*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #fff9f0;--primary: #ff6b6b;--secondary: #4ecdc4;--text: #333;--text-light: #666;--card-bg: #ffffff;--shadow: 0 4px 16px rgba(0,0,0,.1);--radius: 20px;--correct: #51cf66;--wrong: #ff6b6b}html,body{height:100%;background:var(--bg);font-family:"M PLUS Rounded 1c",Hiragino Maru Gothic Pro,Yu Gothic,sans-serif;color:var(--text);-webkit-tap-highlight-color:transparent}#app{min-height:100vh;display:flex;flex-direction:column;align-items:center}#settings-screen{width:100%;max-width:480px;padding:20px 16px 32px;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:16px}#settings-screen h1{font-size:1.8rem;font-weight:800;color:var(--primary);text-shadow:2px 2px 0 #ffb3b3;letter-spacing:.05em;text-align:center}.settings-card{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 16px 20px;width:100%}.settings-section-title{font-size:1.05rem;font-weight:800;color:var(--text);margin-bottom:4px}.settings-hint{font-size:.78rem;color:var(--text-light);margin-bottom:12px}.toggle-group{display:flex;flex-wrap:wrap;gap:8px}.radio-group{flex-direction:column;gap:8px}.toggle-btn{background:#f0f0f0;color:#888;border:2px solid #ddd;border-radius:14px;padding:10px 16px;font-size:.95rem;font-family:inherit;font-weight:700;cursor:pointer;transition:background .15s,color .15s,border-color .15s,transform .1s;text-align:left;width:100%;display:flex;align-items:center;gap:10px}.diff-label{font-size:1.05rem;font-weight:800;min-width:5.5em}.diff-desc{font-size:.8rem;font-weight:400;color:inherit;opacity:.75}.toggle-btn.selected{background:var(--secondary);color:#fff;border-color:#35a89f}.toggle-btn.selected .diff-desc{opacity:.9}#difficulty-group .toggle-btn[data-value=easy].selected{background:#51cf66;border-color:#3aaa4f}#difficulty-group .toggle-btn[data-value=normal].selected{background:#339af0;border-color:#1c7ed6}#difficulty-group .toggle-btn[data-value=hard].selected{background:#f03e3e;border-color:#c92a2a}#difficulty-group .toggle-btn[data-value=extreme].selected{background:#845ef7;border-color:#6741d9}.toggle-btn:active{transform:scale(.97)}.settings-error{font-size:.9rem;font-weight:700;color:var(--wrong);min-height:1.4em;text-align:center}#start-btn{background:var(--primary);color:#fff;border:none;border-radius:18px;padding:16px 48px;font-size:1.3rem;font-family:inherit;font-weight:800;cursor:pointer;box-shadow:0 5px #c94f4f;transition:transform .1s,box-shadow .1s;letter-spacing:.05em;margin-top:4px}#start-btn:active{transform:translateY(4px);box-shadow:0 1px #c94f4f}#result-screen{width:100%;max-width:480px;min-height:100vh;padding:32px 16px;margin:0 auto;display:flex;flex-direction:column;align-items:center;gap:22px}#result-screen h1{font-size:1.8rem;text-align:center}.result-card{width:100%;padding:24px 18px;background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);text-align:center}.result-level{margin-bottom:18px;font-size:1.15rem;font-weight:800}.result-counts{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:18px}.result-count{min-height:118px;border-radius:18px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-weight:800}.correct-count{color:#2b8a3e;background:#ebfbee}.wrong-count{color:#c92a2a;background:#fff0f0}.result-number{font-size:2.6rem;line-height:1}#result-message{min-height:1.5em;color:var(--text-light);font-weight:700}.result-actions{width:100%;display:grid;gap:12px}.result-actions button{width:100%;min-height:62px;border:none;border-radius:16px;color:#fff;font-family:inherit;font-size:1rem;font-weight:800;cursor:pointer;box-shadow:0 4px #0000002e}#retry-wrong-btn{background:#ff922b}#retry-level-btn{background:#339af0}#result-home-btn{background:#868e96}.result-actions button:active:not(:disabled){transform:translateY(3px);box-shadow:0 1px #0000002e}.result-actions button:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}#game-screen{width:100%;max-width:480px;padding:16px;margin:0 auto;display:flex;flex-direction:column;align-items:center}.game-title-row{display:flex;align-items:center;justify-content:center;position:relative;margin-bottom:10px}#back-btn{position:absolute;left:0;background:#f0f0f0;border:none;border-radius:10px;width:38px;height:38px;font-size:1.1rem;cursor:pointer;font-weight:700;color:var(--text-light);display:flex;align-items:center;justify-content:center;transition:background .15s}#back-btn:active{background:#ddd}header{width:100%;text-align:center;margin-bottom:12px}h1{font-size:1.5rem;font-weight:800;color:var(--primary);text-shadow:2px 2px 0 #ffb3b3;letter-spacing:.05em}#score-display{display:flex;justify-content:center;gap:10px}.score-box{background:var(--card-bg);border-radius:14px;padding:6px 14px;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;min-width:76px}.clef-box{min-width:72px}.score-label{font-size:.72rem;color:var(--text-light);font-weight:700;letter-spacing:.05em}.score-box span:last-child{font-size:1.3rem;font-weight:800;color:var(--primary);line-height:1.2}main{width:100%;display:flex;flex-direction:column;align-items:center;gap:12px}#staff-wrapper{width:100%;background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);padding:8px 8px 4px;min-height:170px;display:flex;align-items:center;justify-content:center;overflow:hidden}#staff{width:100%}#staff svg{display:block;margin:0 auto;max-width:100%}.message{font-size:1.4rem;font-weight:800;min-height:2rem;text-align:center;transition:all .2s ease;letter-spacing:.05em}.message.correct{color:var(--correct);animation:pop .3s ease}.message.wrong{color:var(--wrong);animation:shake .3s ease}@keyframes pop{0%{transform:scale(.8)}60%{transform:scale(1.2)}to{transform:scale(1)}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}#buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;width:100%}.note-btn{background:var(--secondary);color:#fff;border:none;border-radius:16px;padding:0;height:60px;font-size:1.2rem;font-family:inherit;font-weight:800;cursor:pointer;box-shadow:0 4px #35a89f;transition:transform .1s,box-shadow .1s,background .15s;letter-spacing:.03em;-webkit-user-select:none;user-select:none}.note-btn:nth-child(1){background:#ff6b6b;box-shadow:0 4px #c94f4f}.note-btn:nth-child(2){background:#ff922b;box-shadow:0 4px #c96e1f}.note-btn:nth-child(3){background:#fcc419;box-shadow:0 4px #c99910;color:#333}.note-btn:nth-child(4){background:#51cf66;box-shadow:0 4px #3aaa4f}.note-btn:nth-child(5){background:#339af0;box-shadow:0 4px #1c7ed6}.note-btn:nth-child(6){background:#845ef7;box-shadow:0 4px #6240cc}.note-btn:nth-child(7){background:#f06595;box-shadow:0 4px #c44c76}.note-btn:active:not(:disabled){transform:translateY(3px);box-shadow:0 1px 0 currentColor}.note-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.note-btn.correct-answer{background:var(--correct)!important;box-shadow:0 4px #3aaa4f!important;opacity:1!important}.note-btn.wrong-answer{background:#ccc!important;box-shadow:0 4px #aaa!important}@media(max-width:340px){h1{font-size:1.3rem}.note-btn{font-size:1rem;height:52px}#buttons{gap:7px}.diff-label{font-size:.95rem}}