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0;border:1px solid #0000;border-radius:10px;justify-content:center;align-items:center;padding:0;transition:background .15s,border-color .15s;display:inline-flex}.nsb2 .icon-btn:hover{background:var(--surface-2);border-color:var(--line)}.nsb2 .icon-btn[aria-pressed=true]{background:var(--accent-soft);color:var(--accent);border-color:#0000}.nsb2 .top .spacer{flex:1}.nsb2 .ctl-group{align-items:center;gap:6px;display:flex}.nsb2 .ctl{border:1px solid var(--line-2);background:var(--surface);height:38px;color:var(--fg);white-space:nowrap;border-radius:999px;align-items:center;gap:8px;padding:0 12px 0 10px;font-size:13.5px;font-weight:500;transition:border-color .15s,background .15s;display:inline-flex}.nsb2 .ctl:hover{border-color:var(--faint)}.nsb2 .ctl .k{color:var(--muted);font-weight:400}.nsb2 .ctl svg.chev{color:var(--muted)}.nsb2 .tip{display:inline-flex;position:relative}.nsb2 .tip-btn{width:22px;height:22px;color:var(--faint);background:0 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var(--line-2);background:var(--surface);border-radius:999px;align-items:center;gap:8px;height:38px;padding:0 12px 0 4px;font-size:13.5px;font-weight:500;display:inline-flex}.nsb2 .user-chip .ini{background:var(--accent-soft);width:30px;height:30px;color:var(--accent);border-radius:50%;justify-content:center;align-items:center;font-size:12.5px;font-weight:600;display:flex}.nsb2 .hdr-sep{background:var(--line);width:1px;height:22px;margin:0 4px}.nsb2 .body{grid-template-columns:var(--c-sb,264px) minmax(0, 1fr) var(--c-ami,340px);flex:1;min-height:0;display:grid;position:relative}.nsb2 .body[data-sb=closed]{--c-sb:0px}.nsb2 .body[data-layout="2"],.nsb2 .body[data-layout="3"]{grid-template-columns:var(--c-sb,264px) minmax(0, 1fr);grid-template-rows:auto auto minmax(0,1fr) auto}.nsb2 .body[data-layout="2"] .sidebar,.nsb2 .body[data-layout="4"] .sidebar,.nsb2 .body[data-layout="3"] .sidebar{grid-row:1/-1}.nsb2 .body[data-layout="2"] .chat,.nsb2 .body[data-layout="4"] .chat,.nsb2 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