:root{--bg:#f6f6f6;--surface:#ffffff;--border:#e2e2e2;--text:#1a1a1a;--muted:#6b6b6b;--accent:#1a1a1a}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px}a{color:inherit}.app{display:grid;grid-template-columns:340px 1fr;min-height:100vh}.sidebar{border-right:1px solid var(--border);background:var(--surface);padding:16px;overflow-y:auto;height:100vh}.main{padding:24px;display:flex;flex-direction:column;gap:16px}h1{font-size:16px;margin:0 0 4px}.subtitle{color:var(--muted);font-size:12px;margin:0 0 16px}.section{margin-bottom:18px}.section>h2{text-transform:none;margin:0 0 8px;font-weight:600}.section>h2,label{font-size:12px;color:var(--muted)}label{display:block;margin-bottom:4px}input[type=email],input[type=number],input[type=password],input[type=text],select,textarea{width:100%;padding:8px 10px}button,input[type=email],input[type=number],input[type=password],input[type=text],select,textarea{border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);font:inherit}button{padding:8px 12px;cursor:pointer}button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}button:disabled{opacity:.5;cursor:not-allowed}.row{gap:8px;align-items:center}.row,.tabs{display:flex}.tabs{gap:6px;margin-bottom:10px;flex-wrap:wrap}.tab{padding:6px 10px;font-size:12px}.tab.active{background:var(--accent);color:#fff;border-color:var(--accent)}.list{display:flex;flex-direction:column;gap:4px;max-height:260px;overflow-y:auto}.list-item{text-align:left;display:flex;justify-content:space-between;align-items:center;gap:8px}.list-item.active{background:var(--accent);color:#fff;border-color:var(--accent)}.badge{font-size:10px;color:var(--muted)}.list-item.active .badge{color:#ddd}.control{margin-bottom:12px}.control .control-head{display:flex;justify-content:space-between;font-size:12px;margin-bottom:4px}.control .control-val{color:var(--muted);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}input[type=range]{width:100%}details{border:1px solid var(--border);border-radius:8px;padding:8px 10px;margin-bottom:8px;background:var(--surface)}summary{cursor:pointer;font-weight:600;font-size:12px}.preview{border:1px solid var(--border);border-radius:12px;background:var(--surface);padding:24px;min-height:200px;display:flex;align-items:center;justify-content:center;overflow:auto}.preview svg{max-width:100%;height:auto}.error{color:#b00020;font-size:12px}.muted,.statusline{color:var(--muted);font-size:12px}.statusline{display:flex;gap:10px;align-items:center}