@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 .bm-demo {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-card);
  padding: 22px 24px;
}.legacy-content .bm-models { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 16px; }.legacy-content .bm-model {
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  padding: 15px 17px;
}.legacy-content .bm-model.m-a { border-color: rgba(124,58,237,0.35); background: rgba(124,58,237,0.03); }.legacy-content .bm-model.m-b { border-color: rgba(8,145,178,0.35); background: rgba(8,145,178,0.03); }.legacy-content .bm-model .bm-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }.legacy-content .bm-model h4 { font-size: 15px; font-weight: 800; color: var(--text); }.legacy-content .bm-model .bm-score { font-size: 20px; font-weight: 800; }.legacy-content .bm-model.m-a .bm-score { color: #7c3aed; }.legacy-content .bm-model.m-b .bm-score { color: #0891b2; }.legacy-content .bm-model .bm-tag { font-size: 11.5px; color: var(--sub); margin-top: 2px; }.legacy-content .bm-perf {
  margin-top: 12px; padding: 11px 13px; border-radius: 10px;
  background: rgba(0,0,0,0.025); border: 1px solid var(--border);
  font-size: 12.5px; color: var(--text); line-height: 1.75;
  min-height: 92px;
  opacity: 0; transform: translateY(6px);
  transition: opacity 0.35s, transform 0.35s;
}.legacy-content .bm-perf.show { opacity: 1; transform: translateY(0); }.legacy-content .bm-perf .bm-win {
  display: inline-block; font-size: 11px; font-weight: 800;
  padding: 2px 10px; border-radius: 999px; margin-bottom: 6px;
}.legacy-content .bm-perf .bm-win.w { background: rgba(22,163,74,0.1); color: var(--success); }.legacy-content .bm-perf .bm-win.l { background: rgba(0,0,0,0.06); color: var(--sub); }.legacy-content .bm-tasks { display: flex; gap: 8px; }.legacy-content .bm-task {
  flex: 1; border: 1.5px solid var(--border); background: var(--card);
  border-radius: var(--radius-sm); padding: 10px 12px;
  font-size: 13px; font-weight: 800; color: var(--sub);
  cursor: pointer; font-family: inherit; transition: all 0.15s;
}.legacy-content .bm-task:hover { border-color: rgba(0,102,255,0.4); color: var(--accent); }.legacy-content .bm-task.on { border-color: var(--accent); background: rgba(0,102,255,0.05); color: var(--accent); }.legacy-content .bm-explain {
  margin-top: 14px; border-top: 1.5px dashed var(--border); padding-top: 13px;
  font-size: 13px; font-weight: 700; color: var(--sub); line-height: 1.8;
  opacity: 0; transition: opacity 0.4s;
}.legacy-content .bm-explain.show { opacity: 1; }.legacy-content .bm-explain b { color: var(--accent); }.legacy-content .bm-final {
  display: none; margin-top: 12px; padding: 12px 16px; border-radius: var(--radius-sm);
  background: rgba(22,163,74,0.06); border: 1.5px solid rgba(22,163,74,0.25);
  font-size: 13px; font-weight: 800; color: var(--success); line-height: 1.8;
}.legacy-content .bm-final.show { display: block; }.legacy-content .pt-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }.legacy-content .pt-card {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow-card);
}.legacy-content .pt-card .pt-icon { font-size: 26px; margin-bottom: 8px; }.legacy-content .pt-card h4 { font-size: 14.5px; font-weight: 800; color: var(--text); margin-bottom: 5px; }.legacy-content .pt-card p { font-size: 12.5px; color: var(--sub); line-height: 1.8; }.legacy-content .pt-card p b { color: var(--text); }.legacy-content .bm-list {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-card);
  padding: 18px 22px;
}.legacy-content .bm-list h4 { font-size: 14px; font-weight: 800; color: var(--text); margin-bottom: 8px; }.legacy-content .bm-list ul { list-style: none; padding: 0; margin: 0; }.legacy-content .bm-list li {
  font-size: 13px; color: var(--sub); line-height: 1.85;
  padding: 3px 0 3px 20px; position: relative;
}.legacy-content .bm-list li::before {
  content: ''; position: absolute; left: 2px; top: 12px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--cyan);
}.legacy-content .bm-list li b { color: var(--text); }.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 .qa-answer p { font-size: 15px; }.legacy-content .bm-models { grid-template-columns: 1fr; }.legacy-content .bm-perf { min-height: 0; }.legacy-content .bm-tasks { flex-direction: column; }.legacy-content .pt-grid { grid-template-columns: 1fr; }}