.nt-sg{border-bottom:1px solid var(--line);margin:0}
.nt-sg>summary{display:flex;align-items:baseline;gap:8px;cursor:pointer;list-style:none;padding:14px 4px;font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.04em}
.nt-sg>summary::-webkit-details-marker{display:none}
.nt-sg>summary::before{content:"▸";color:var(--blue);font-size:13px;transition:transform .2s}
.nt-sg[open]>summary::before{transform:rotate(90deg)}
.nt-sg>summary small{font-size:12px;font-weight:700;color:var(--sub)}
.nt-sg[hidden]{display:none}
.nt-subchips{margin-top:0}
.nt-subchips[hidden]{display:none}
.nt-chip.nt-sub{min-height:34px;font-size:13px;border-style:dashed}