:root{--bg:#f5f1ea;--panel:#fffdf9;--ink:#1d1b18;--muted:#736c61;--line:#e3dccf;--right:#3867d6;--right-soft:#d9e4ff;--left:#d9702a;--left-soft:#ffe1cb;--ok:#1e9a61;--ok-soft:#cdeedc;--bad:#d93b3b;--bad-soft:#ffd9d6;--radius:16px;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{min-height:100vh;margin:0}button{font:inherit;color:inherit}h1,h2,h3,p{margin:0}.button{border:1px solid var(--line);background:var(--panel);cursor:pointer;white-space:nowrap;border-radius:999px;justify-content:center;align-items:center;gap:6px;padding:10px 16px;font-weight:600;transition:background .15s,border-color .15s,transform 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glow}.key.white.heard{background:var(--ok-soft);box-shadow:inset 0 -7px 0 var(--ok)}.key.black.heard{background:var(--ok)}.key.white.wrong{background:var(--bad-soft);animation:.35s shake}.key.black.wrong{background:var(--bad);animation:.35s shake}.key.hearing:before{content:"";background:#9a9184;border-radius:50%;width:8px;height:8px;position:absolute;top:10px}.label{color:#8a8275;pointer-events:none;font-size:12px;font-weight:600}.key.target .label{color:var(--ink);font-size:14px;font-weight:800}.key.black .label,.key.black.target .label{color:#fff;font-size:11px}.finger{background:var(--right);color:#fff;pointer-events:none;border-radius:50%;place-items:center;width:26px;height:26px;margin-bottom:6px;font-size:14px;font-weight:800;display:grid}.hand-L .finger{background:var(--left)}.middle-c{background:#c9a227;border-radius:50%;width:6px;height:6px;position:absolute;top:8px}@keyframes glow{50%{filter:brightness(.9)}}@keyframes 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input{flex:1}.toggle{color:var(--ink);cursor:pointer;margin-top:14px;font-weight:600}.shortcuts{color:var(--muted);margin-top:10px;font-size:13px}.tempo{color:var(--muted);align-items:center;gap:8px;font-size:14px;display:inline-flex}.tempo input{width:120px}.tempo b{min-width:64px;color:var(--ink)}.toggle.inline{margin-top:0}.beta-tag{background:var(--ink);color:#fff;letter-spacing:.02em;vertical-align:1px;border-radius:999px;margin-right:2px;padding:1px 8px;font-size:12px;font-weight:700;display:inline-block}.sheet-offer p.sheet-offer-note{color:var(--muted);margin-top:8px;font-size:14px}.ai-box a.button{color:inherit;text-decoration:none}.sheet-offer a.button{text-decoration:none}