*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--primary:#16213e;--accent:#0f3460;--green:#27ae60;--red:#e74c3c;--orange:#e67e22;--border:#dde1ea;--bg:#eef0f7;--card:#fff;--muted:#7f8c9a}body{background:var(--bg);color:var(--primary);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.4}header{background:var(--primary);color:#fff;text-align:center;padding:18px 16px 14px}header h1{letter-spacing:-.02em;font-size:clamp(1rem,4.5vw,1.45rem);font-weight:700}header .subtitle{opacity:.6;margin-top:3px;font-size:.8rem}.ad-placeholder{text-align:center;color:#9aa0b2;letter-spacing:.09em;text-transform:uppercase;background:#e2e6f0;border:2px dashed #c2c9d8;border-radius:8px;padding:16px;font-size:.68rem}.ad-banner{padding:10px 16px}.ad-inline{margin-bottom:10px}.page-body{max-width:1100px;margin:0 auto;padding:0 16px}.page-layout{grid-template-columns:1fr;gap:0;display:grid}main{min-width:0;padding:0 0 40px}.sidebar{display:none}@media (width>=800px){.page-layout{grid-template-columns:1fr 300px;align-items:start;gap:24px}.sidebar{display:block;position:sticky;top:16px}.sidebar-ad-inner{justify-content:center;align-items:center;min-height:600px;display:flex}}.tab-nav{-webkit-overflow-scrolling:touch;scrollbar-width:none;gap:4px;margin:10px 0 4px;display:flex;overflow-x:auto}.tab-nav::-webkit-scrollbar{display:none}.tab-btn{border:1.5px solid var(--border);background:var(--card);color:var(--primary);cursor:pointer;white-space:nowrap;border-radius:8px;flex-shrink:0;padding:8px 14px;font-size:.82rem;font-weight:600;transition:all .13s}.tab-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.tab-btn:not(.active):hover{border-color:var(--accent);color:var(--accent)}.settings-toggle{background:var(--card);border:1.5px solid var(--border);cursor:pointer;width:100%;color:var(--primary);border-radius:10px;justify-content:space-between;align-items:center;margin:6px 0;padding:12px 16px;font-size:.9rem;font-weight:600;transition:background .13s;display:flex}.settings-toggle:hover{background:#f6f8fd}.chevron{color:var(--muted);font-size:.68rem;transition:transform .22s;display:inline-block}.settings-toggle[aria-expanded=true] .chevron{transform:rotate(180deg)}.settings-panel{background:var(--card);border:1.5px solid var(--border);border-radius:10px;margin-bottom:10px;padding:16px;display:none}.settings-panel.open{display:block}.setting-group{margin-bottom:15px}.setting-group:last-child{margin-bottom:0}.setting-label{color:var(--muted);text-transform:uppercase;letter-spacing:.09em;margin-bottom:7px;font-size:.7rem;font-weight:700}.btn-group{flex-wrap:wrap;gap:5px;display:flex}.opt-btn{border:1.5px solid var(--border);color:var(--primary);cursor:pointer;white-space:nowrap;background:#fff;border-radius:7px;padding:6px 13px;font-size:.82rem;font-weight:500;transition:all .13s}.opt-btn.active{background:var(--primary);border-color:var(--primary);color:#fff}.opt-btn:not(.active):hover{border-color:var(--accent);color:var(--accent)}.score-bar{background:var(--card);border:1.5px solid var(--border);border-radius:10px;flex-wrap:wrap;align-items:center;gap:0;margin:10px 0;padding:10px 12px;display:flex}.score-item{text-align:center;flex:1;min-width:46px;padding:2px 0}.score-val{color:var(--primary);font-size:1.25rem;font-weight:800;line-height:1}.score-lbl{color:var(--muted);text-transform:uppercase;letter-spacing:.07em;margin-top:2px;font-size:.6rem}.score-sep{background:var(--border);flex-shrink:0;width:1px;height:26px}.streak-val{color:var(--orange)}.reset-btn{border:1.5px solid var(--border);color:var(--muted);cursor:pointer;white-space:nowrap;background:0 0;border-radius:7px;margin-left:8px;padding:6px 12px;font-size:.77rem;font-weight:600;transition:all .13s}.reset-btn:hover{border-color:var(--red);color:var(--red)}@media (width<=380px){.score-val{font-size:1.05rem}.score-lbl{font-size:.56rem}.score-sep{height:22px}}.staff-card{background:var(--card);border:1.5px solid var(--border);text-align:center;border-radius:14px;flex-direction:column;justify-content:center;align-items:center;min-height:170px;margin-bottom:10px;padding:14px 12px 10px;display:flex}.question-prompt{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px;font-size:.75rem;font-weight:700}.staff-container{width:100%}.staff-container svg{max-width:100%;margin:0 auto;display:block}.staff-meta{color:var(--muted);margin-top:5px;font-size:.7rem}.answer-row{gap:4px 2px;margin-bottom:10px;display:grid}.ans-btn{border:2px solid var(--border);background:var(--card);height:60px;color:var(--primary);cursor:pointer;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;touch-action:manipulation;border-radius:10px;width:100%;font-size:1.15rem;font-weight:700;transition:background .12s,border-color .12s,color .12s}.ans-btn.black-key{background:var(--primary);border-color:var(--primary);color:#fff;letter-spacing:-.03em;border-radius:0 0 7px 7px;justify-self:center;width:78%;height:46px;font-size:.78rem}.ans-btn:not(:disabled):hover,.ans-btn:not(:disabled):focus-visible{background:var(--accent);border-color:var(--accent);color:#fff;outline:none}.ans-btn.correct{background:var(--green)!important;border-color:var(--green)!important;color:#fff!important}.ans-btn.wrong{background:var(--red)!important;border-color:var(--red)!important;color:#fff!important}.ans-btn:disabled{cursor:default;opacity:.65}.ans-btn.correct,.ans-btn.wrong{opacity:1!important}.answer-row.note-mode{grid-template-rows:auto auto;grid-template-columns:repeat(14,1fr)}.answer-row.chord-mode{grid-template-rows:auto auto;grid-template-columns:repeat(2,1fr);gap:8px}.ans-btn.chord-btn{border-radius:10px;height:64px;font-size:1rem}.chord-feedback{text-align:center;min-height:1.4em;color:var(--muted);margin-top:5px;font-size:.88rem;font-style:italic}@media (width<=360px){.answer-row.note-mode{gap:3px 1px}.ans-btn{height:52px;font-size:1rem}.ans-btn.black-key{height:38px;font-size:.7rem}.ans-btn.chord-btn{height:54px;font-size:.9rem}}.coming-soon{background:var(--card);border:1.5px solid var(--border);text-align:center;color:var(--muted);border-radius:14px;margin-top:10px;padding:40px 20px;font-size:1rem}.coming-soon strong{color:var(--primary);margin-bottom:8px;font-size:1.2rem;display:block}@keyframes pop{0%{transform:scale(1)}45%{transform:scale(1.35)}to{transform:scale(1)}}.pop{animation:.26s ease-out pop}.render-error{color:var(--red);padding:16px;font-size:.85rem}#cookie-banner{z-index:999;background:var(--primary);color:#fff;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:14px 16px;display:flex;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -2px 12px #0000002e}#cookie-banner.hidden{display:none}.cookie-text{opacity:.9;flex:1;min-width:200px;font-size:.82rem;line-height:1.5}.cookie-text a{color:#a8c4f0;text-decoration:underline}.cookie-actions{flex-shrink:0;gap:8px;display:flex}.cookie-btn{cursor:pointer;white-space:nowrap;border:none;border-radius:8px;padding:8px 18px;font-size:.85rem;font-weight:600;transition:opacity .15s}.cookie-btn:hover{opacity:.85}.cookie-btn-accept{background:var(--green);color:#fff}.cookie-btn-decline{color:#ffffffb3;background:0 0;border:1.5px solid #ffffff4d!important}.answer-row.interval-mode.svelte-ee151c{grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:10px;display:grid}.interval-btn.svelte-ee151c{border-radius:10px;height:auto;padding:14px 6px;font-size:.88rem;line-height:1.2}@media (width<=480px){.answer-row.interval-mode.svelte-ee151c{grid-template-columns:repeat(2,1fr)}}.key-mode-toggle.svelte-cn8oru{gap:6px;margin:8px 0;display:flex}.key-mode-btn.svelte-cn8oru{border:1.5px solid var(--border);background:var(--card);color:var(--primary);cursor:pointer;border-radius:9px;flex:1;padding:9px 14px;font-size:.85rem;font-weight:600;transition:all .13s}.key-mode-btn.active.svelte-cn8oru{background:var(--primary);border-color:var(--primary);color:#fff}.key-mode-btn.svelte-cn8oru:not(.active):hover{border-color:var(--accent);color:var(--accent)}.key-display-card.svelte-cn8oru{background:var(--card);border:1.5px solid var(--border);text-align:center;border-radius:14px;flex-direction:column;justify-content:center;align-items:center;gap:6px;min-height:120px;margin-bottom:10px;padding:28px 16px 20px;display:flex}.key-display-label.svelte-cn8oru{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-size:.72rem;font-weight:700}.key-display-name.svelte-cn8oru{color:var(--primary);letter-spacing:-.02em;font-size:2.2rem;font-weight:800;line-height:1.1}.key-display-clef.svelte-cn8oru{color:var(--muted);font-size:.7rem}.build-group.svelte-cn8oru{background:var(--card);border:1.5px solid var(--border);border-radius:12px;margin-bottom:10px;padding:14px}.build-group-label.svelte-cn8oru{color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px;font-size:.7rem;font-weight:700}.build-btns.svelte-cn8oru{flex-wrap:wrap;gap:7px;display:flex}.count-btns.svelte-cn8oru .build-btn:where(.svelte-cn8oru){flex:1;min-width:44px}.build-btn.svelte-cn8oru{border:2px solid var(--border);background:var(--card);color:var(--primary);cursor:pointer;-webkit-user-select:none;user-select:none;touch-action:manipulation;-webkit-tap-highlight-color:transparent;border-radius:9px;padding:12px 8px;font-size:1.05rem;font-weight:700;transition:all .12s}.build-btn.svelte-cn8oru:not(:disabled):hover,.build-btn.selected.svelte-cn8oru{background:var(--accent);border-color:var(--accent);color:#fff}.build-btn.correct.svelte-cn8oru{background:var(--green)!important;border-color:var(--green)!important;color:#fff!important;opacity:1!important}.build-btn.wrong.svelte-cn8oru{background:var(--red)!important;border-color:var(--red)!important;color:#fff!important;opacity:1!important}.build-btn.svelte-cn8oru:disabled{cursor:default;opacity:.55}.type-btn.svelte-cn8oru{flex:1;font-size:.95rem}.key-feedback.svelte-cn8oru{background:var(--card);border:1.5px solid var(--border);color:var(--muted);border-radius:10px;margin-bottom:10px;padding:12px 16px;font-size:.88rem;line-height:1.5}.key-feedback.correct.svelte-cn8oru{border-color:var(--green);color:#1e8449;background:#eafaf1}.key-feedback.wrong.svelte-cn8oru{border-color:var(--red);color:#c0392b;background:#fdf3f3}.feedback-verdict.svelte-cn8oru{margin-right:5px;font-weight:700}.answer-row.time-mode.svelte-5otcvk{grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:10px;display:grid}.time-btn.svelte-5otcvk{justify-content:center;align-items:center;height:auto;padding:12px 8px;display:flex}.time-sig-display.svelte-5otcvk{flex-direction:column;align-items:center;gap:2px;font-weight:700;line-height:1;display:flex}.time-num.svelte-5otcvk,.time-den.svelte-5otcvk{font-size:1.4rem;line-height:1;display:block}.time-num.svelte-5otcvk{border-bottom:2px solid;padding-bottom:2px}@media (width<=480px){.answer-row.time-mode.svelte-5otcvk{grid-template-columns:repeat(2,1fr)}.time-num.svelte-5otcvk,.time-den.svelte-5otcvk{font-size:1.15rem}}footer.svelte-1sr6y3t{text-align:center;color:var(--muted);border-top:1px solid var(--border);justify-content:center;align-items:center;gap:8px;padding:20px 16px;font-size:.82rem;display:flex}footer.svelte-1sr6y3t a:where(.svelte-1sr6y3t){color:var(--muted);font-weight:600;text-decoration:none;transition:color .13s}footer.svelte-1sr6y3t a:where(.svelte-1sr6y3t):hover{color:var(--primary)}span.svelte-1sr6y3t{opacity:.5}.faq-page.svelte-1s9hvqm header:where(.svelte-1s9hvqm){background:var(--primary);color:#fff;text-align:center;padding:18px 16px 14px}.faq-page.svelte-1s9hvqm header:where(.svelte-1s9hvqm) h1:where(.svelte-1s9hvqm){letter-spacing:-.02em;font-size:clamp(1rem,4.5vw,1.45rem);font-weight:700}.faq-page.svelte-1s9hvqm header:where(.svelte-1s9hvqm) .subtitle:where(.svelte-1s9hvqm){opacity:.6;margin-top:3px;font-size:.8rem}.faq-body.svelte-1s9hvqm{max-width:760px;margin:0 auto;padding:32px 20px 60px}section.svelte-1s9hvqm{margin-bottom:48px}h2.svelte-1s9hvqm{color:var(--accent);text-transform:uppercase;letter-spacing:.07em;border-bottom:2px solid var(--border);margin-bottom:24px;padding-bottom:10px;font-size:1.1rem;font-weight:700}.faq-item.svelte-1s9hvqm{border-bottom:1px solid var(--border);margin-bottom:24px;padding-bottom:24px}.faq-item.svelte-1s9hvqm:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}h3.svelte-1s9hvqm{color:var(--primary);margin-bottom:10px;font-size:1rem;font-weight:700}p.svelte-1s9hvqm{color:var(--primary);font-size:.95rem;line-height:1.7}.faq-cta.svelte-1s9hvqm{background:var(--card);border:1.5px solid var(--border);text-align:center;border-radius:14px;margin-top:16px;padding:32px 24px}.faq-cta.svelte-1s9hvqm h2:where(.svelte-1s9hvqm){color:var(--primary);text-transform:none;letter-spacing:0;border-bottom:none;margin-bottom:10px;padding-bottom:0;font-size:1.2rem;font-weight:700}.faq-cta.svelte-1s9hvqm p:where(.svelte-1s9hvqm){color:var(--muted);margin-bottom:20px}.faq-cta.svelte-1s9hvqm a:where(.svelte-1s9hvqm){background:var(--primary);color:#fff;border-radius:10px;padding:12px 28px;font-size:.95rem;font-weight:700;text-decoration:none;transition:background .13s;display:inline-block}.faq-cta.svelte-1s9hvqm a:where(.svelte-1s9hvqm):hover{background:var(--accent)}@media (width<=375px){.faq-body.svelte-1s9hvqm{padding:24px 16px 48px}h3.svelte-1s9hvqm{font-size:.95rem}p.svelte-1s9hvqm{font-size:.9rem}}