:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}body{margin:0}#app{height:100vh;display:flex}.sidebar{width:290px;border-right:1px solid #ddd;overflow:auto;background:#fff}.filterWrap{position:sticky;top:0;background:#fff;padding:12px 12px 10px;border-bottom:1px solid #eee;z-index:5}.title{font-weight:700;margin-bottom:8px}.filter{width:100%;padding:10px 12px;border:1px solid #ddd;border-radius:12px;outline:none}.group{padding:10px 12px}.group h3{margin:12px 0 8px;font-size:14px;opacity:.85}button.ins{width:100%;padding:9px 10px;margin:4px 0;border:1px solid #ddd;background:#fff;border-radius:12px;cursor:pointer}button.ins:hover{background:#f6f6f6}.main{flex:1;padding:12px;display:flex;flex-direction:column;gap:10px}math-field{display:block;width:100%;min-height:76px;font-size:22px;padding:12px;border:1px solid #ddd;border-radius:14px}.row{display:flex;gap:10px;flex-wrap:wrap}.row button{padding:9px 12px;border:1px solid #ddd;background:#fff;border-radius:12px;cursor:pointer}.row button:hover{background:#f6f6f6}textarea{width:100%;min-height:110px;resize:vertical;padding:10px;border:1px solid #ddd;border-radius:14px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace}.small{opacity:.75;font-size:12px}@media(max-width:900px){#app{flex-direction:column}.sidebar{width:auto;border-right:none;border-bottom:1px solid #ddd;max-height:45vh}}