:root{font-family:"Avenir Next",Avenir,"Segoe UI",sans-serif;color:#202c35;background:#e9edf0;font-synthesis:none;--ink:#202c35;--muted:#566773;--paper:#f9fafb;--line:#cdd6db;--accent:#355c78;--guitar:#bdcde1;--bass:#c0d3c4;--synth:#d6cbe0;--drums:#e1c9b6}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,select,input,textarea{border:1px solid var(--line);border-radius:5px;color:var(--ink);background:var(--paper)}button{padding:9px 13px;font-weight:600;cursor:pointer;line-height:1.3}button:hover{background:#e4ebf0;border-color:#849ba9}button:disabled{opacity:.5;cursor:wait}.primary{background:var(--accent);border-color:var(--accent);color:white}.primary:hover{background:#254a66;color:white}input,select{padding:8px;min-width:0}textarea{padding:12px;resize:vertical;line-height:1.6;width:100%}label{display:flex;flex-direction:column;gap:5px;font-size:13px;font-weight:600}h1,h2,p{margin:0}h1{font-size:34px;letter-spacing:-1px;line-height:1.2;font-weight:600}h2{font-size:17px;font-weight:650}p{line-height:1.6}.muted{color:var(--muted)}.small{font-size:12px}.wordmark{font-family:Georgia,serif;font-size:38px;font-style:italic;font-weight:900;letter-spacing:-3px;color:inherit;text-decoration:none}.topbar{display:flex;align-items:center;gap:18px;padding:15px 28px;background:var(--ink);color:#f4f7f9}.top-caption{font-size:13px;color:#b9cad5}.library{margin-left:auto;flex-direction:row;align-items:center}.library select{max-width:310px}.topbar .primary{background:#c3d8e8;color:var(--ink)}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 360px;max-width:1800px;margin:auto;min-height:calc(100vh - 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