.page-main{padding:72px 0 96px}.page-header{max-width:600px;margin-bottom:2rem}.page-header h1{font-size:clamp(2rem,4vw,3rem);margin-bottom:1rem}.page-intro{font-size:1rem;color:var(--text-muted);line-height:1.7}.mode-tabs{display:flex;gap:.5rem;margin-bottom:2.5rem;border-bottom:2px solid var(--border);padding-bottom:0}.mode-tab{padding:.6rem 1.4rem;font-size:.88rem;font-weight:500;font-family:Archivo Narrow,sans-serif;border:none;background:none;color:var(--text-muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:color .15s,border-color .15s;border-radius:4px 4px 0 0}.mode-tab:hover{color:var(--accent)}.mode-tab.active{color:var(--accent);border-bottom-color:var(--accent);background:none}.ear-display{display:flex;flex-direction:column;align-items:center;gap:1rem;padding:2rem 0 1rem}.play-btn{width:96px;height:96px;border-radius:50%;border:3px solid var(--accent);background:var(--white);color:var(--accent);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .15s,color .15s,transform .1s,box-shadow .15s;box-shadow:0 2px 12px #00000014}.play-btn:hover{background:var(--accent);color:#fff;transform:scale(1.06);box-shadow:0 4px 20px #00000026}.play-btn.played{background:var(--accent);color:#fff}.ear-label{font-size:.9rem;color:var(--text-muted);text-align:center}.replay-btn{font-size:.78rem;color:var(--text-muted);background:none;border:1px solid var(--border);border-radius:999px;padding:.3rem .9rem;cursor:pointer;transition:color .15s,border-color .15s}.replay-btn:hover{color:var(--accent);border-color:var(--accent)}.game-layout{display:grid;grid-template-columns:1fr 300px;gap:3rem;align-items:start}.game-card{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:2.5rem;display:flex;flex-direction:column;align-items:center;gap:1.75rem}.score-bar{display:flex;gap:3rem;width:100%;justify-content:center;padding-bottom:1.5rem;border-bottom:1px solid var(--border)}.score-stat{display:flex;flex-direction:column;align-items:center;gap:.15rem}.score-num{font-family:Archivo Narrow,sans-serif;font-size:2rem;font-weight:700;color:var(--text);line-height:1;transition:transform .15s}.score-lbl{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted)}.staff-wrap{width:100%}.staff-container{width:100%;background:var(--bg-alt);border-radius:8px;padding:.5rem}#game-svg{width:100%;height:auto;display:block}.feedback{min-height:1.75rem;font-size:.95rem;font-weight:500;text-align:center;border-radius:6px;padding:.5rem 1.25rem;transition:all .2s;width:100%}.feedback.correct{background:#ecfdf5;color:#065f46;border:1px solid #a7f3d0}.feedback.wrong{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}.note-buttons{display:flex;gap:.6rem;flex-wrap:wrap;justify-content:center;width:100%}.note-btn{width:56px;height:56px;border-radius:50%;border:2px solid var(--border);background:var(--white);font-family:Archivo Narrow,sans-serif;font-size:1.2rem;font-weight:600;color:var(--text);cursor:pointer;transition:background .15s,border-color .15s,transform .1s;display:flex;align-items:center;justify-content:center}.note-btn:hover:not(:disabled){background:var(--accent);border-color:var(--accent);color:#fff;transform:scale(1.08)}.note-btn:disabled{cursor:default;opacity:.5}.note-btn.correct{background:#10b981;border-color:#10b981;color:#fff;opacity:1;transform:scale(1.12)}.note-btn.wrong{background:#ef4444;border-color:#ef4444;color:#fff;opacity:1}.note-btn.show-correct{background:#10b981;border-color:#10b981;color:#fff;opacity:1}.next-btn{visibility:hidden;align-self:center}.game-aside{position:sticky;top:80px;display:flex;flex-direction:column;gap:1.25rem}.hint-card{background:var(--white);border:1px solid var(--border);border-radius:8px;padding:1.5rem}.hint-card h3{font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--text-muted);margin-bottom:1rem}.hint-block{margin-bottom:1rem;padding-bottom:1rem;border-bottom:1px solid var(--border)}.hint-block:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}.hint-title{font-size:.75rem;color:var(--text-muted);margin-bottom:.25rem}.hint-notes{font-size:1.05rem;letter-spacing:.08em;margin-bottom:.2rem}.hint-mnemonic{font-size:.78rem;color:var(--text-muted);font-style:italic}.hint-card-violin h3{margin-bottom:.75rem}.string-row{display:flex;align-items:center;gap:.75rem;padding:.5rem 0;border-bottom:1px solid var(--border)}.string-row:last-child{border-bottom:none}.string-name{font-family:Archivo Narrow,sans-serif;font-size:1.2rem;font-weight:700;color:var(--accent);width:20px;flex-shrink:0}.string-desc{font-size:.82rem;color:var(--text-muted)}.hint-card-cta{background:var(--bg-alt)}.hint-card-cta p{font-size:.88rem;color:var(--text-muted);line-height:1.6}.sound-hint{font-size:.75rem;color:var(--text-muted);margin:-.75rem 0 0;text-align:center;letter-spacing:.02em}.keyboard-tip{font-size:.72rem;color:var(--text-muted);text-align:center;letter-spacing:.03em}@media(max-width:900px){.game-layout{grid-template-columns:1fr}.game-aside{position:static}}@media(max-width:480px){.game-card{padding:1.5rem}.score-bar{gap:1.5rem}.note-btn{width:44px;height:44px;font-size:1rem}}