.caption{font-size:14px;color:var(--muted);margin-top:12px}.caption b{color:var(--ink)}.figgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.figgrid .figure{margin:0}.placeholder{min-height:150px;border:1px dashed #a9a9b0;border-radius:15px;padding:18px;display:flex;flex-direction:column;justify-content:center;background:linear-gradient(135deg,#fafafa,#f1f1f4)}.placeholder b{font-size:18px}.formula{background:#111216;color:#f7f7fa;border-radius:18px;padding:17px 21px;margin:17px 0;overflow:auto}.formula mjx-container{color:#f7f7fa!important}