/*! Interval Ear Training 2.0.0 | pitchdetector.com */
.pie{--b:#2563eb;--b2:#1d4ed8;--v:#7c3aed;--n:#0f172a;--mut:#475569;--line:#e2e8f0;--ok:#15803d;--warn:#b45309;--bad:#b91c1c;--kw:42px;--bw:26px;
	box-sizing:border-box;max-width:980px;margin:0 auto 2em;padding:18px;border-radius:20px;background:#fff;border:1px solid #dbe4f5;
	box-shadow:0 10px 28px rgba(15,23,42,.08);color:var(--n);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;overflow:hidden}
.pie *,.pie *::before,.pie *::after{box-sizing:border-box}
.pie [hidden]{display:none!important}
.pie .pie-title{margin:0 0 10px;font-size:1.5rem;line-height:1.2;font-weight:800;color:var(--n);letter-spacing:-.01em}
.pie .pie-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:6px;padding:5px;margin:0 0 12px;border-radius:16px;background:#f1f5f9}
.pie .pie-tab{appearance:none;-webkit-appearance:none;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:50px;padding:6px 4px;border:0;border-radius:12px;background:transparent;color:var(--n);font:inherit;font-weight:800;font-size:.95rem;line-height:1.15;cursor:pointer;text-transform:none;letter-spacing:normal;box-shadow:none}
.pie .pie-tab small{font-weight:500;font-size:.72rem;color:var(--mut);margin-top:2px}
.pie .pie-tab:hover{background:#e2e8f0;color:var(--n)}
.pie .pie-tab[aria-selected="true"]{background:var(--n);color:#fff;box-shadow:0 4px 12px rgba(15,23,42,.25)}
.pie .pie-tab[aria-selected="true"] small{color:#c7d2fe}
.pie .pie-hud{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:0 0 12px;padding:0;list-style:none}
.pie .pie-hud li{margin:0;padding:6px 10px;border-radius:12px;border:1px solid var(--line);background:#f8fafc;font-size:.78rem;color:var(--mut);line-height:1.25}
.pie .pie-hud b{display:block;font-size:1.15rem;color:var(--n);font-variant-numeric:tabular-nums}
.pie .pie-hud li[data-hot="1"]{background:#fef3c7;border-color:#f59e0b}
.pie .pie-hud li[data-hot="1"] b::after{content:" in a row";font-size:.7rem;font-weight:600;color:var(--warn)}
.pie .pie-card{position:relative;display:grid;grid-template-columns:148px minmax(0,1fr);gap:6px 18px;align-items:center;padding:18px 18px 18px 24px;border-radius:18px;background:linear-gradient(135deg,#eef2ff 0,#f5f3ff 100%);border:1px solid #c7d2fe}
.pie .pie-card::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:6px;border-radius:0 6px 6px 0;background:linear-gradient(180deg,var(--b),var(--v))}
.pie .pie-card[data-state="right"]{border-color:#86efac;background:linear-gradient(135deg,#f0fdf4,#eef2ff)}
.pie .pie-card[data-state="right"]::before{background:var(--ok)}
.pie .pie-card[data-state="wrong"]{border-color:#fca5a5;background:linear-gradient(135deg,#fef2f2,#f5f3ff)}
.pie .pie-card[data-state="wrong"]::before{background:var(--bad)}
.pie .pie-face{grid-row:1/span 3;display:flex;flex-direction:column;align-items:center;justify-content:center;width:148px;height:148px;border-radius:50%;border:7px solid transparent;background:linear-gradient(#fff,#fff) padding-box,linear-gradient(135deg,var(--b),var(--v)) border-box;text-align:center;box-shadow:0 8px 20px rgba(79,70,229,.18)}
.pie .pie-face b{font-size:2.6rem;font-weight:900;line-height:1;letter-spacing:-.02em;color:var(--n);white-space:nowrap}
.pie .pie-face small{margin-top:4px;font-size:.78rem;color:var(--mut);max-width:110px;line-height:1.2}
.pie .pie-card[data-state="right"] .pie-face{background:linear-gradient(#fff,#fff) padding-box,linear-gradient(135deg,#22c55e,var(--ok)) border-box}
.pie .pie-card[data-state="right"] .pie-face small{color:var(--ok);font-weight:700}
.pie .pie-card[data-state="wrong"] .pie-face{background:linear-gradient(#fff,#fff) padding-box,linear-gradient(135deg,#f87171,var(--bad)) border-box}
.pie .pie-card[data-state="wrong"] .pie-face small{color:var(--bad);font-weight:700}
.pie .pie-card[data-state="ask"] .pie-face{animation:pie-pulse 1.8s ease-in-out infinite}
@keyframes pie-pulse{50%{box-shadow:0 8px 30px rgba(124,58,237,.42)}}
.pie .pie-cardtop{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;margin:0;align-self:end}
.pie .pie-kicker{font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--v)}
.pie .pie-dir{display:inline-block;padding:2px 10px;border-radius:99px;background:#fff;border:1px solid #c7d2fe;font-size:.8rem;font-weight:700;color:var(--b2)}
.pie .pie-prompt{margin:0;font-size:1.05rem;font-weight:600;line-height:1.4}
.pie .pie-actions{display:flex;flex-wrap:wrap;gap:8px;align-self:start}
.pie .pie-btn{appearance:none;-webkit-appearance:none;display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:9px 16px;border-radius:12px;border:2px solid var(--b);background:#fff;color:var(--b2);font:inherit;font-weight:700;font-size:.95rem;line-height:1.2;text-transform:none;letter-spacing:normal;cursor:pointer;text-decoration:none;box-shadow:none;transition:background .15s,transform .1s}
.pie .pie-btn:hover{background:#eff6ff;color:var(--b2)}
.pie .pie-btn:active{transform:translateY(1px)}
.pie .pie-btn:disabled{opacity:.45;cursor:not-allowed}
.pie .pie-btn-sm{min-height:44px;padding:6px 12px;font-size:.88rem}
.pie .pie-go{min-height:52px;padding:10px 26px;font-size:1.08rem;border:0;border-radius:999px;color:#fff;background:linear-gradient(90deg,var(--b),var(--v));box-shadow:0 6px 18px rgba(124,58,237,.35)}
.pie .pie-go:hover{color:#fff;background:linear-gradient(90deg,var(--b2),#6d28d9)}
.pie .pie-stop{border-color:#cbd5e1;color:var(--mut)}
.pie kbd{display:inline-block;margin-left:4px;padding:0 5px;border:1px solid #cbd5e1;border-bottom-width:2px;border-radius:5px;background:#f8fafc;color:var(--mut);font:600 .7rem/1.5 ui-monospace,Consolas,monospace}
.pie .pie-btn:focus-visible,.pie .pie-tab:focus-visible,.pie .pie-ans:focus-visible,.pie .pie-ivchip:focus-visible,.pie .pie-key:focus-visible,.pie select:focus-visible,.pie input:focus-visible+span,.pie input[type=range]:focus-visible,.pie input[type=checkbox]:focus-visible,.pie .pie-summary:focus-visible,.pie .pie-kbd-scroll:focus-visible{outline:3px solid #f59e0b;outline-offset:2px}
.pie .pie-reveal{grid-column:1/-1;margin:6px 0 0;padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line)}
.pie .pie-reveal p{margin:0 0 6px;font-size:.95rem}
.pie .pie-reveal-btns{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}
.pie .pie-yours{color:var(--mut)}
.pie .pie-rulerwrap{grid-column:1/-1;margin:6px 0 0}
.pie canvas{display:block;width:100%;height:112px;border-radius:12px;border:1px solid var(--line);background:#f8fafc}
.pie .pie-readout{margin:6px 0 0;font-size:.92rem;font-weight:600;color:var(--n);font-variant-numeric:tabular-nums;min-height:1.5em}
.pie .pie-chart{margin:14px 0 0}
.pie .pie-chart-h{max-width:820px;margin:0 auto 8px;font-size:.78rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--mut)}
.pie .pie-grid{display:flex;flex-direction:column;gap:8px;max-width:820px;margin:0 auto}
.pie .pie-grid-sep{margin:6px 0 0;padding-top:8px;border-top:1px dashed #cbd5e1;font-size:.8rem;font-weight:700;color:var(--v)}
.pie .pie-row{display:grid;grid-template-columns:96px minmax(0,1fr);gap:8px;align-items:center}
.pie .pie-row-lab{font-size:.8rem;font-weight:700;color:var(--mut);line-height:1.2}
.pie .pie-row-btns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.pie .pie-gap{min-width:0}
.pie .pie-ans{appearance:none;-webkit-appearance:none;position:relative;flex:1 1 0;min-width:0;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;min-height:58px;padding:7px 10px;border:2px solid #c7d2fe;border-radius:12px;background:#fff;color:var(--n);font:inherit;text-align:left;cursor:pointer;text-transform:none;letter-spacing:normal;box-shadow:0 1px 0 #c7d2fe;transition:background .15s,border-color .15s,transform .1s}
.pie .pie-ans b{font-size:1.2rem;font-weight:900;line-height:1.1}
.pie .pie-ans span{font-size:.78rem;color:var(--mut);line-height:1.2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}
.pie .pie-ans kbd{position:absolute;top:5px;right:6px;margin:0}
.pie .pie-ans:hover:not(:disabled){border-color:var(--b);background:#eff6ff}
.pie .pie-ans:active:not(:disabled){transform:translateY(1px)}
.pie .pie-ans:disabled{cursor:default}
.pie .pie-chart[data-idle="1"] .pie-ans{opacity:.55}
.pie .pie-ans[data-state="correct"]{border-color:var(--ok);background:#dcfce7}
.pie .pie-ans[data-state="correct"] span{color:var(--ok);font-weight:700}
.pie .pie-ans[data-state="wrong"]{border-color:var(--bad);background:#fee2e2}
.pie .pie-ans[data-state="wrong"] span{color:var(--bad);font-weight:700}
.pie .pie-ans[data-state="dim"]{opacity:.55}
.pie .pie-detect{display:grid;gap:12px}
.pie .pie-kbd-scroll{overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;border-radius:12px;border:1px solid var(--line);background:#0f172a;padding:8px 8px 10px}
.pie .pie-keys{position:relative;height:150px;width:calc(var(--n,22) * var(--kw));margin:0 auto}
.pie .pie-key{appearance:none;-webkit-appearance:none;position:absolute;top:0;width:var(--kw);height:150px;padding:0 0 8px;margin:0;border:1px solid #94a3b8;border-radius:0 0 8px 8px;background:linear-gradient(180deg,#fff 70%,#e2e8f0);color:var(--mut);font:700 .68rem/1 system-ui,sans-serif;display:flex;align-items:flex-end;justify-content:center;cursor:pointer;text-transform:none;letter-spacing:normal;box-shadow:none}
.pie .pie-key-b{width:var(--bw);height:92px;z-index:2;border-color:#0f172a;background:linear-gradient(180deg,#334155,#0f172a)}
@media (hover:hover){.pie .pie-key:hover{background:#dbeafe}.pie .pie-key-b:hover{background:#1e3a8a}}
.pie .pie-key[data-state]::after{position:absolute;top:8px;left:50%;transform:translateX(-50%);width:22px;height:22px;border-radius:50%;color:#fff;font:800 .8rem/22px system-ui,sans-serif;text-align:center}
.pie .pie-key[data-state="a"]{background:#bfdbfe}
.pie .pie-key[data-state="a"]::after{content:"1";background:var(--b)}
.pie .pie-key[data-state="b"]{background:#ddd6fe}
.pie .pie-key[data-state="b"]::after{content:"2";background:var(--v)}
.pie .pie-key-b[data-state="a"]{background:var(--b)}
.pie .pie-key-b[data-state="b"]{background:var(--v)}
.pie .pie-dtop{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.pie .pie-dtop .pie-small{flex:1 1 220px}
.pie .pie-result{display:grid;gap:6px;padding:16px 18px;border-radius:18px;background:linear-gradient(135deg,#eef2ff,#f5f3ff);border:1px solid #c7d2fe;position:relative}
.pie .pie-result::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:6px;border-radius:0 6px 6px 0;background:linear-gradient(180deg,var(--b),var(--v))}
.pie .pie-rname{margin:0;font-size:1.7rem;font-weight:900;line-height:1.15;letter-spacing:-.01em}
.pie .pie-result[data-state=""] .pie-rname{font-size:1.25rem;color:var(--mut)}
.pie .pie-rsub{margin:0;font-weight:700;color:var(--b2)}
.pie .pie-rmore{margin:0;font-size:.92rem;color:var(--mut)}
.pie .pie-chips{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:0;padding:0;list-style:none}
.pie .pie-chips li{margin:0}
.pie .pie-chip{padding:4px 11px;border-radius:99px;background:var(--n);color:#fff;font-weight:800;font-size:.92rem}
.pie .pie-chip small{margin-left:5px;font-weight:600;font-size:.72rem;color:#c7d2fe}
.pie .pie-chip-iv{font-size:.8rem;font-weight:800;color:var(--v)}
.pie .pie-chip-empty{font-size:.88rem;color:var(--mut)}
.pie .pie-small{margin:0;font-size:.86rem;color:var(--mut)}
.pie .pie-summary,.pie .pie-stats{padding:16px;border-radius:18px;background:#fff;border:1px solid #c7d2fe}
.pie .pie-sum-top{text-align:center;padding:14px;border-radius:14px;background:linear-gradient(135deg,var(--n),#312e81);color:#fff}
.pie .pie-sum-title{margin:0;font-size:1rem;font-weight:700;color:#e0e7ff}
.pie .pie-sum-score{margin:4px 0 0}
.pie .pie-sum-score strong{font-size:2.6rem;font-weight:900;line-height:1.1}
.pie .pie-sum-sub{margin:4px 0 0;font-size:.92rem;color:#c7d2fe}
.pie .pie-sum-h{margin:14px 0 6px;font-size:.95rem;font-weight:800;color:var(--n)}
.pie h3.pie-sum-h{font-size:1rem}
.pie .pie-tablewrap{overflow-x:auto;margin:10px 0 0}
.pie .pie-table{width:100%;border-collapse:collapse;font-size:.9rem;margin:0}
.pie .pie-table caption{caption-side:bottom;text-align:left;font-size:.78rem;color:var(--mut);padding-top:6px}
.pie .pie-table th,.pie .pie-table td{padding:6px 8px;border:1px solid var(--line);text-align:left}
.pie .pie-table thead th{font-size:.78rem;color:var(--mut);background:#f8fafc}
.pie .pie-table td.is-ok{color:var(--ok);font-weight:700}
.pie .pie-table td.is-mid{color:var(--warn);font-weight:700}
.pie .pie-table td.is-bad{color:var(--bad);font-weight:700}
.pie .pie-table.pie-conf{width:auto}
.pie .pie-conf td,.pie .pie-conf th{text-align:center;min-width:44px}
.pie .pie-conf thead th:first-child{text-align:left}
.pie .pie-conf td.is-diag{background:#dcfce7;color:var(--ok);font-weight:800}
.pie .pie-conf td.is-conf{color:#7f1d1d;font-weight:800}
.pie .pie-conf-list{margin:0;padding-left:1.2em}
.pie .pie-conf-list li{margin:2px 0}
.pie .pie-sum-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.pie .pie-reset[data-armed]{border-color:var(--bad);color:var(--bad)}
.pie .pie-stats-top{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.pie .pie-tile{padding:8px 10px;border-radius:12px;background:#f8fafc;border:1px solid var(--line);font-size:.78rem;color:var(--mut);line-height:1.25}
.pie .pie-tile b{display:block;font-size:1.3rem;color:var(--n)}
.pie .pie-empty{margin:12px 0 0;color:var(--mut)}
.pie .pie-bars{margin:0;padding:0;list-style:none;display:grid;gap:6px}
.pie .pie-bars li{display:grid;grid-template-columns:44px minmax(60px,1fr) minmax(0,auto);gap:8px;align-items:center;margin:0;font-size:.85rem}
.pie .pie-bar-lab{font-weight:800}
.pie .pie-bar{display:block;height:12px;border-radius:99px;background:#e2e8f0;overflow:hidden}
.pie .pie-bar i{display:block;height:100%;border-radius:99px;background:#94a3b8}
.pie .pie-bar i[data-level="ok"]{background:var(--ok)}
.pie .pie-bar i[data-level="mid"]{background:#d97706}
.pie .pie-bar i[data-level="bad"]{background:var(--bad)}
.pie .pie-bar-val{color:var(--mut);font-variant-numeric:tabular-nums}
.pie .pie-status{margin:10px 0 0;font-size:.9rem;color:var(--mut)}
.pie .pie-status[data-kind="error"]{color:var(--bad);font-weight:700;padding:10px 12px;background:#fef2f2;border:1px solid #fecaca;border-radius:10px}
.pie .pie-sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.pie .pie-settings{margin:14px 0 0;padding:14px;border:1px solid var(--line);border-radius:16px;background:#f8fafc;min-width:0}
.pie .pie-settings legend{padding:0 6px;font-weight:800;font-size:1rem}
.pie .pie-srow{margin:0 0 14px}
.pie .pie-srow:last-child{margin-bottom:0}
.pie .pie-lab{display:block;font-weight:700;font-size:.85rem;color:var(--mut);margin:0 0 6px}
.pie .pie-seg{display:flex;flex-wrap:wrap;gap:6px}
.pie .pie-seg label{position:relative;margin:0}
.pie .pie-seg input{position:absolute;opacity:0;width:1px;height:1px}
.pie .pie-seg span{display:inline-flex;flex-direction:column;justify-content:center;min-height:44px;padding:6px 13px;border-radius:12px;border:2px solid #c7d2fe;background:#fff;cursor:pointer;font-weight:700;font-size:.9rem;line-height:1.2}
.pie .pie-seg span small{font-weight:500;font-size:.74rem;color:var(--mut)}
.pie .pie-seg input:checked+span{border-color:var(--b);background:#eff6ff;color:var(--b2);box-shadow:inset 0 0 0 1px var(--b)}
.pie .pie-seg input[type=checkbox]+span{position:relative;padding-right:26px}
.pie .pie-seg input[type=checkbox]:checked+span::after{content:"✓";position:absolute;top:4px;right:8px;font-size:.85rem;font-weight:900}
.pie .pie-ivchips{display:grid;grid-template-columns:repeat(auto-fill,minmax(58px,1fr));gap:6px;margin-top:8px}
.pie .pie-ivchip{appearance:none;-webkit-appearance:none;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:44px;padding:4px;border:2px solid #cbd5e1;border-radius:10px;background:#fff;color:var(--mut);font:inherit;cursor:pointer;line-height:1.1;text-transform:none;letter-spacing:normal;box-shadow:none}
.pie .pie-ivchip b{font-size:.95rem;color:var(--n)}
.pie .pie-ivchip small{font-size:.66rem}
.pie .pie-ivchip[aria-pressed="true"]{border-color:var(--b);background:var(--b);color:#dbeafe}
.pie .pie-ivchip[aria-pressed="true"] b{color:#fff}
.pie .pie-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.pie select{width:100%;min-height:44px;padding:8px 10px;border:2px solid #c7d2fe;border-radius:12px;background:#fff;color:var(--n);font:inherit;font-size:.95rem}
.pie input[type=range]{width:100%;min-height:44px;accent-color:var(--b);margin:0}
.pie .pie-out{display:block;font-size:.8rem;color:var(--mut)}
.pie .pie-check{display:flex;align-items:flex-start;gap:10px;min-height:44px;padding:6px 0;margin:0;font-size:.92rem;cursor:pointer}
.pie .pie-check input{width:22px;height:22px;margin:2px 0 0;flex:none;accent-color:var(--b)}
.pie .pie-check small{display:block;color:var(--mut)}
.pie .pie-setmsg{margin:8px 0 0;font-size:.82rem;color:var(--mut)}
.pie .pie-privacy{margin:10px 0 0;font-size:.82rem;color:var(--mut)}
@media (max-width:700px){
	.pie{padding:12px;border-radius:16px;--kw:44px;--bw:28px}
	.pie .pie-title{font-size:1.25rem;margin-bottom:8px}
	.pie .pie-tabs{gap:3px;padding:4px;margin-bottom:8px}
	.pie .pie-tab{min-height:46px;font-size:.84rem;padding:4px 2px}
	.pie .pie-tab small{font-size:.64rem}
	.pie .pie-hud{gap:5px;margin-bottom:8px}
	.pie .pie-hud li{padding:4px 6px;font-size:.68rem;text-align:center}
	.pie .pie-hud b{font-size:.98rem}
	.pie .pie-hud li[data-hot="1"] b::after{content:""}
	.pie .pie-card{grid-template-columns:92px minmax(0,1fr);gap:8px 12px;padding:12px 12px 12px 16px}
	.pie .pie-face{grid-row:1/span 2;width:92px;height:92px;border-width:5px}
	.pie .pie-face b{font-size:1.7rem}
	.pie .pie-face small{font-size:.66rem;max-width:74px}
	.pie .pie-prompt{font-size:.95rem}
	.pie .pie-actions{grid-column:1/-1}
	.pie .pie-actions .pie-btn{flex:1 1 auto}
	.pie .pie-go{min-height:50px;font-size:1.02rem;padding:10px 18px}
	.pie .pie-row{grid-template-columns:1fr;gap:3px}
	.pie .pie-row-lab{font-size:.72rem}
	.pie .pie-row-btns{gap:6px}
	.pie .pie-ans{min-height:54px;padding:6px 8px}
	.pie .pie-ans b{font-size:1.08rem}
	.pie .pie-ans span{font-size:.7rem}
	.pie .pie-ans kbd{display:none}
	.pie .pie-cols,.pie .pie-stats-top{grid-template-columns:repeat(2,minmax(0,1fr))}
	.pie .pie-rname{font-size:1.35rem}
	.pie .pie-sum-score strong{font-size:2.2rem}
	.pie .pie-bars li{grid-template-columns:40px minmax(40px,1fr);}
	.pie .pie-bar-val{grid-column:2}
}
@media (hover:none){.pie .pie-actions kbd{display:none}}
@media (prefers-reduced-motion:reduce){.pie *,.pie *::before,.pie *::after{animation:none!important;transition:none!important}}