*{box-sizing:border-box}body{margin:0;font-family:system-ui,sans-serif;background:#0f1220;color:#eef0ff;font-size:18px}
.wrap{max-width:980px;margin:0 auto;padding:32px 20px 56px}
h1{margin:0;font-size:2.4em}.sub{opacity:.7;margin:8px 0 22px;font-size:1.1em}
.controls{display:flex;gap:14px;align-items:center;margin-bottom:18px;font-size:1em}
.toggle{display:flex;background:#1c2140;border-radius:12px;padding:4px}
.toggle button{border:0;background:transparent;color:#aab;padding:8px 16px;border-radius:9px;cursor:pointer;font-size:1em}
.toggle button.active{background:#4f6bff;color:#fff}
.ghost{background:transparent;border:1px solid #3a4070;color:#ccd;border-radius:10px;padding:9px 18px;cursor:pointer;font-size:1em}
.check{display:flex;gap:6px;align-items:center;opacity:.85;cursor:pointer}
.piano{position:relative;height:230px;background:#1c2140;border-radius:16px;padding:14px;user-select:none}
.key{position:absolute;border-radius:0 0 9px 9px;cursor:pointer;border:1px solid #000;font-size:13px;display:flex;align-items:flex-end;justify-content:center;padding-bottom:10px}
.white{background:#fff;color:#333;top:14px;bottom:14px;z-index:1}
.white.sel{background:#4f6bff;color:#fff;border-color:#4f6bff}
.white.inscale{background:#c9d4ff}
.white.sel.inscale{background:#4f6bff}
.black{background:#111;color:#bbb;z-index:2;top:14px;height:128px;bottom:auto}
.black.sel{background:#4f6bff;color:#fff}
.black.inscale{background:#2e3a8f;color:#fff}
.selected-row{display:flex;gap:12px;align-items:center;margin:20px 0;font-size:1.05em}
.chips{display:flex;gap:10px;flex-wrap:wrap}
.chip{background:#1c2140;border:1px solid #3a4070;border-radius:22px;padding:6px 8px 6px 14px;display:flex;gap:10px;align-items:center}
.chip button{border:0;background:#333a70;color:#fff;border-radius:50%;width:24px;height:24px;cursor:pointer;font-size:1em}
.hint{opacity:.5}
h2{margin:18px 0 10px}.count{opacity:.6;font-size:.8em}
.results{display:grid;gap:12px}
.card{background:#1c2140;border:1px solid #2c3260;border-radius:14px;padding:16px;display:flex;gap:12px;align-items:center;justify-content:space-between;cursor:pointer;font-size:1.05em}
.card:hover{border-color:#4f6bff}
.card.active{border-color:#4f6bff;box-shadow:0 0 0 1px #4f6bff}
.card .t{font-weight:700}.card .m{opacity:.7;font-size:.85em}
.badge{font-size:.75em;background:#2a3170;border-radius:6px;padding:2px 8px;margin-left:8px}
.play{border:0;background:#4f6bff;color:#fff;border-radius:9px;padding:10px 16px;cursor:pointer;white-space:nowrap;font-size:1em}
.empty{opacity:.6;background:#1c2140;border-radius:12px;padding:16px}