@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 .path-demo {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-card);
  padding: 22px 24px;
}.legacy-content .path-modes { display: flex; gap: 8px; margin-bottom: 6px; }.legacy-content .path-mode {
  flex: 1; border: 1.5px solid var(--border); background: var(--card);
  border-radius: var(--radius-sm); padding: 10px 12px;
  font-size: 13.5px; font-weight: 800; color: var(--sub);
  cursor: pointer; font-family: inherit; transition: all 0.15s;
}.legacy-content .path-mode:hover { border-color: rgba(0,102,255,0.4); }.legacy-content .path-mode.on-old { border-color: var(--amber); background: rgba(217,119,6,0.06); color: var(--amber); }.legacy-content .path-mode.on-new { border-color: var(--success); background: rgba(22,163,74,0.05); color: var(--success); }.legacy-content .path-quote {
  margin: 12px 0 14px; padding: 10px 14px; border-radius: 10px;
  background: rgba(100,116,139,0.07); border: 1px solid rgba(100,116,139,0.12);
  font-size: 13.5px; color: var(--text); font-weight: 700;
}.legacy-content .path-stage { display: flex; flex-direction: column; align-items: stretch; min-height: 330px; }.legacy-content .path-node {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 12px 15px; border-radius: 12px;
  border: 1.5px solid var(--border); background: rgba(0,0,0,0.015);
  opacity: 0.28; transform: translateY(6px);
  transition: opacity 0.4s, transform 0.4s, border-color 0.4s, background 0.4s;
}.legacy-content .path-node .pn-ico { flex-shrink: 0; font-size: 20px; margin-top: 2px; }.legacy-content .path-node .pn-title { font-size: 13.5px; font-weight: 800; color: var(--text); margin-bottom: 2px; }.legacy-content .path-node .pn-desc { font-size: 12.5px; color: var(--sub); line-height: 1.75; }.legacy-content .path-node .pn-desc b { color: var(--accent); }.legacy-content .path-node.lit { opacity: 1; transform: translateY(0); }.legacy-content .path-node.lit.n-old { border-color: rgba(217,119,6,0.45); background: rgba(217,119,6,0.05); }.legacy-content .path-node.lit.n-old .pn-desc b { color: var(--amber); }.legacy-content .path-node.lit.n-fail { border-color: rgba(220,38,38,0.4); background: rgba(220,38,38,0.05); }.legacy-content .path-node.lit.n-fail .pn-desc b { color: var(--danger); }.legacy-content .path-node.lit.n-new { border-color: rgba(22,163,74,0.4); background: rgba(22,163,74,0.05); }.legacy-content .path-node.lit.n-new .pn-desc b { color: var(--success); }.legacy-content .path-arrow {
  text-align: center; font-size: 16px; line-height: 1; padding: 4px 0;
  color: var(--sub); opacity: 0.15; transition: opacity 0.4s;
}.legacy-content .path-arrow.lit { opacity: 0.8; }.legacy-content .path-result {
  margin-top: 14px; border-top: 1.5px dashed var(--border); padding-top: 14px;
  display: flex; gap: 12px; align-items: center;
  font-size: 14px; font-weight: 800;
  opacity: 0; transition: opacity 0.4s;
}.legacy-content .path-result.show { opacity: 1; }.legacy-content .path-result .pr-badge { padding: 6px 16px; border-radius: 999px; font-size: 13px; flex-shrink: 0; }.legacy-content .path-result.old .pr-badge { background: rgba(217,119,6,0.1); color: var(--amber); }.legacy-content .path-result.new .pr-badge { background: rgba(22,163,74,0.1); color: var(--success); }.legacy-content .path-result .pr-verdict { color: var(--sub); font-weight: 600; font-size: 13px; line-height: 1.7; }.legacy-content .pt-grid { display: grid; grid-template-columns: repeat(2, 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 .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 .pt-grid { grid-template-columns: 1fr; }.legacy-content .qa-answer p { font-size: 15px; }.legacy-content .path-modes { flex-direction: column; }.legacy-content .path-stage { min-height: 360px; }}