:root{--bg-top:#fdf9ea;--bg-bottom:#f9edcd;--card:#fffdfb;--white-key:#fffcf8;--white-key-edge:#ecdcd6;--black-key:#46324a;--active:#ffc983;--accent:#c0587c;--accent-soft:#edc7d3;--ink:#4a3540;--ink-soft:#8a6f7b}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{background:linear-gradient(170deg, var(--bg-top), var(--bg-bottom));color:var(--ink);overscroll-behavior:none;touch-action:manipulation;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}#app{max-width:1080px;height:100%;padding:10px 14px;padding-bottom:max(12px, env(safe-area-inset-bottom));flex-direction:column;gap:10px;margin:0 auto;display:flex}.masthead{justify-content:center;align-items:baseline;gap:10px;padding-top:2px;display:flex}.masthead h1{letter-spacing:.02em;color:var(--accent);font-family:Georgia,Times New Roman,Songti SC,SimSun,serif;font-size:clamp(18px,3.2vw,26px);font-weight:600}.masthead h1 .note-glyph{margin-right:6px}.masthead .tagline{color:var(--ink-soft);letter-spacing:.06em;font-size:clamp(11px,2vw,14px)}.controls{background:color-mix(in srgb, var(--card) 78%, transparent);border:1px solid #f3e2e4;border-radius:16px;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 18px;padding:10px 14px;display:flex;box-shadow:0 2px 12px #a05a7314}.field{align-items:center;gap:7px;display:flex}.field-label{color:var(--ink-soft);white-space:nowrap;font-size:12.5px;font-weight:600}.segmented{border:1.5px solid var(--accent-soft);background:#fff;border-radius:999px;display:inline-flex;overflow:hidden}.segmented button{color:var(--ink);font:inherit;cursor:pointer;white-space:nowrap;background:0 0;border:none;padding:7px 12px;font-size:13px;transition:background .15s}.segmented button.selected{background:var(--accent);color:#fff;font-weight:700}input[type=range]{width:110px;accent-color:var(--accent);touch-action:none}.octave-control{align-items:center;gap:6px;display:inline-flex}.octave-btn{border:1.5px solid var(--accent-soft);width:34px;height:34px;color:var(--accent);cursor:pointer;background:#fff;border-radius:50%;font-size:16px;line-height:1;transition:background .15s,transform .1s}.octave-btn:active:not(:disabled){transform:scale(.92)}.octave-btn:disabled{opacity:.35;cursor:default}.octave-range{text-align:center;font-variant-numeric:tabular-nums;min-width:62px;color:var(--accent);font-size:13px;font-weight:700}.stop-btn{border:1.5px solid var(--accent);color:var(--accent);font:inherit;cursor:pointer;background:#fff;border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600;transition:background .15s,color .15s}.stop-btn:active{background:var(--accent);color:#fff}.install-hint{border:1px solid var(--active);color:var(--ink-soft);background:#fff4e5;border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:6px 12px;font-size:12px;display:flex}.install-hint-close{cursor:pointer;color:var(--ink-soft);background:0 0;border:none;padding:2px 6px;font-size:18px;line-height:1}.critter{pointer-events:none;-webkit-user-select:none;user-select:none;filter:drop-shadow(0 1px 1px #a05a7333);font-size:24px;line-height:1;position:absolute;top:-21px}.keyboard-frame{background:var(--card);border-radius:22px;flex:1;padding:12px;display:flex;position:relative;box-shadow:0 8px 28px #a05a7324}.keyboard-scroller{-webkit-overflow-scrolling:touch;border-radius:12px;flex:1;display:flex;overflow-x:auto}.keyboard{flex:1;gap:3px;min-width:480px;min-height:210px;display:flex;position:relative}.key:focus{outline:none}.key:focus-visible{outline:2px solid var(--accent)}.key{font:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent;touch-action:none;-webkit-user-select:none;user-select:none;border:none;flex-direction:column;justify-content:flex-end;align-items:center;transition:transform 60ms,background .1s,box-shadow .1s;display:flex}.key.white{background:linear-gradient(180deg, #fff, var(--white-key));border:1px solid var(--white-key-edge);border-radius:6px 6px 12px 12px;flex:1;min-width:28px;padding-bottom:12px;box-shadow:0 2px 4px #a05a7314}.key.black{background:linear-gradient(180deg, #55405a, var(--black-key));color:#f6eef4;z-index:2;border-radius:0 0 10px 10px;width:4.13333%;min-width:28px;height:56%;padding-bottom:8px;position:absolute;top:0;transform:translate(-50%);box-shadow:0 4px 8px #46324a66}.key.active,.key.black.active{background:var(--active);color:var(--ink);box-shadow:0 0 0 3px color-mix(in srgb, var(--active) 45%, transparent), 0 2px 6px #a05a7333;transform:translateY(2px)}.key.black.active{transform:translate(-50%,2px)}.key-labels{pointer-events:none;flex-direction:column;align-items:center;gap:2px;display:flex}.label-solfege{color:var(--accent);font-size:clamp(13px,2.6vw,18px);font-weight:700}.key.active .label-solfege{color:var(--ink)}.label-name{color:var(--ink-soft);font-size:clamp(10px,2vw,13px)}.key.black .label-name{color:inherit;opacity:.9;font-size:clamp(9px,1.8vw,12px)}[data-labels=names] .label-solfege,[data-labels=solfege] .key.white .label-name{display:none}@media (height<=420px){.masthead,.critter{display:none}#app{gap:6px;padding:6px 10px}.controls{gap:4px 12px;padding:6px 10px}.keyboard-frame{border-radius:14px;padding:8px}.keyboard{min-height:150px}.key.white{padding-bottom:6px}.segmented button{padding:5px 9px;font-size:12px}.octave-btn{width:28px;height:28px}}