*{box-sizing:border-box}body{color:#222;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}#app{height:100vh;display:flex}#sidebar{background:#fafafa;border-right:1px solid #ddd;flex:none;width:260px;padding:12px;overflow-y:auto}#sidebar h1{margin:4px 8px 12px;font-size:18px}#demo-list button{text-align:left;cursor:pointer;background:0 0;border:none;border-radius:4px;width:100%;margin:2px 0;padding:6px 8px;font-size:13px;display:block}#demo-list button:hover{background:#eee}#demo-list button.active{background:#dbe9ff;font-weight:600}#demo-list .section{text-transform:uppercase;letter-spacing:.08em;color:#888;margin:12px 8px 4px;font-size:11px}#content{flex-direction:column;flex:auto;min-width:0;display:flex}#toolbar{border-bottom:1px solid #ddd;align-items:center;gap:8px;padding:10px 16px;display:flex}#toolbar .spacer{flex:1}#toolbar button{cursor:pointer;background:#fff;border:1px solid #ccc;border-radius:4px;padding:6px 12px}#toolbar button:hover{background:#f0f0f0}#toolbar button.on{background:#dbe9ff;border-color:#7aa7e8}#demo-title{font-weight:600}#chart-host{flex:auto;min-height:0;position:relative}#errors{color:#a00;white-space:pre-wrap;background:#fff4f4;margin:0;padding:12px 16px;font-size:12px}