details.q{border:1px solid var(--line2);border-radius:12px;padding:0 20px;background:#fff;transition:border-color .15s}details.q+details.q{margin-top:10px}details.q[open]{border-color:var(--blue-b2);box-shadow:0 10px 24px -18px #2563eb80}details.q summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;font-size:16px;font-weight:700;color:var(--ink)}details.q summary::-webkit-details-marker{display:none}details.q summary .chev{flex:none;transition:transform .2s;color:var(--blue)}details.q[open] summary .chev{transform:rotate(180deg)}details.q .ans{padding:0 0 20px;font-size:14.5px;line-height:1.65;color:var(--muted);max-width:680px}.catlabel{display:flex;align-items:center;gap:12px;margin-bottom:16px}.catlabel .num{font-family:var(--mono);font-size:13px;color:var(--blue);background:var(--blue-soft);border-radius:7px;padding:3px 9px}