@keyframes _si{from{opacity:0}to{opacity:1}}

.legacy-content .qa-answer {
  background: linear-gradient(135deg, rgba(8,145,178,0.06), rgba(0,102,255,0.05));
  border: 1.5px solid rgba(8,145,178,0.3);
  border-radius: var(--radius); padding: 22px 26px; margin: 4px 0 8px;
}.legacy-content .qa-answer .qa-tag { font-size: 11px; font-weight: 800; letter-spacing: 1px; color: #0891b2; margin-bottom: 8px; }.legacy-content .qa-answer p { font-size: 16.5px; font-weight: 700; color: var(--text); line-height: 1.85; }.legacy-content .qa-answer p b { color: #0891b2; }.legacy-content .match-box {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-card);
  padding: 22px 24px;
}.legacy-content .match-hint { font-size: 13px; color: var(--sub); margin-bottom: 14px; line-height: 1.7; }.legacy-content .match-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }.legacy-content .match-col { display: flex; flex-direction: column; gap: 8px; }.legacy-content .match-col-label { font-size: 11.5px; font-weight: 800; letter-spacing: 0.5px; color: var(--sub); margin-bottom: 2px; }.legacy-content .m-item {
  border: 1.5px solid var(--border); background: var(--card);
  border-radius: var(--radius-sm); padding: 11px 14px;
  font-size: 13.5px; font-weight: 700; color: var(--text);
  cursor: pointer; font-family: inherit; text-align: left;
  transition: all 0.15s; line-height: 1.5;
}.legacy-content .m-item:hover:not(.done) { border-color: rgba(0,102,255,0.45); }.legacy-content .m-item.sel { border-color: var(--accent); background: rgba(0,102,255,0.06); }.legacy-content .m-item.done {
  border-color: rgba(22,163,74,0.4); background: rgba(22,163,74,0.05);
  color: var(--success); cursor: default;
}.legacy-content .m-item.shake { animation: mShake 0.35s ease; }@keyframes mShake{ 0%,100%{transform:translateX(0)} 25%{transform:translateX(-5px)} 75%{transform:translateX(5px)} }.legacy-content .match-done {
  margin-top: 14px; text-align: center; font-size: 14px; font-weight: 800;
  color: var(--success); display: none; animation: scIn 0.4s ease;
}.legacy-content .match-done.show { display: block; }@keyframes scIn{ from { opacity: 0; transform: translateY(6px); } }.legacy-content .co-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }.legacy-content .co-card {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 16px 20px; box-shadow: var(--shadow-card);
}.legacy-content .co-card h4 { font-size: 14.5px; font-weight: 800; color: var(--text); margin-bottom: 3px; }.legacy-content .co-card .co-tag { font-size: 11px; font-weight: 700; color: #0891b2; margin-bottom: 6px; }.legacy-content .co-card p { font-size: 12.5px; color: var(--sub); line-height: 1.75; }.legacy-content .co-card p b { color: var(--text); }.legacy-content .src-note { margin-top: 14px; font-size: 12px; color: var(--sub); line-height: 1.8; }.legacy-content .takeaway-box {
  background: linear-gradient(135deg, #eff6ff, #eef2ff);
  border: 1.5px solid #bfdbfe; border-radius: var(--radius);
  padding: 24px 28px; margin-top: 36px;
}.legacy-content .takeaway-box h3 { font-size: 17px; font-weight: 800; color: #1e40af; margin-bottom: 10px; }.legacy-content .takeaway-box ul { list-style: none; padding: 0; margin: 0; }.legacy-content .takeaway-box li {
  font-size: 14.5px; color: #1e3a5f; line-height: 1.8;
  padding: 4px 0 4px 22px; position: relative;
}.legacy-content .takeaway-box li::before {
  content: ''; position: absolute; left: 0; top: 13px;
  width: 8px; height: 8px; border-radius: 50%; background: #3b82f6;
}@media (max-width: 768px){.legacy-content .co-grid { grid-template-columns: 1fr; }.legacy-content .qa-answer p { font-size: 15px; }.legacy-content .m-item { font-size: 12.5px; padding: 10px 12px; }}