@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 .kb-demo {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-card);
  padding: 22px 24px;
}.legacy-content .kb-dots { display: flex; gap: 8px; margin-bottom: 16px; }.legacy-content .kb-dot {
  flex: 1; border: 1.5px solid var(--border); background: var(--card);
  border-radius: var(--radius-sm); padding: 9px 10px;
  font-size: 12.5px; font-weight: 800; color: var(--sub);
  cursor: pointer; font-family: inherit; transition: all 0.15s; text-align: center;
}.legacy-content .kb-dot:hover { border-color: rgba(0,102,255,0.4); }.legacy-content .kb-dot.on { border-color: var(--accent); background: rgba(0,102,255,0.05); color: var(--accent); }.legacy-content .kb-scene { display: none; min-height: 190px; }.legacy-content .kb-scene.on { display: block; }.legacy-content .kb-item {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 9px 13px; border-radius: 10px; margin-bottom: 7px;
  font-size: 13.5px; color: var(--text); line-height: 1.7;
  background: rgba(0,102,255,0.04); border: 1px solid rgba(0,102,255,0.1);
  opacity: 0; transform: translateY(6px);
  transition: opacity 0.35s, transform 0.35s;
}.legacy-content .kb-item.show { opacity: 1; transform: translateY(0); }.legacy-content .kb-item .kb-ico { flex-shrink: 0; font-size: 16px; margin-top: 1px; }.legacy-content .kb-item b { color: var(--accent); }.legacy-content .kb-shelf { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 10px; }.legacy-content .kb-chunk {
  padding: 5px 11px; border-radius: 8px; font-size: 11.5px; font-weight: 700;
  background: rgba(100,116,139,0.08); border: 1px solid rgba(100,116,139,0.15); color: var(--sub);
  opacity: 0; transform: scale(0.85); transition: all 0.3s;
}.legacy-content .kb-chunk.show { opacity: 1; transform: scale(1); }.legacy-content .kb-chunk.hit { background: rgba(22,163,74,0.1); border-color: var(--success); color: var(--success); }.legacy-content .kb-next-row { margin-top: 14px; border-top: 1.5px dashed var(--border); padding-top: 14px; display: flex; justify-content: center; }.legacy-content .kb-next {
  background: var(--accent); color: #fff; border: none;
  padding: 10px 34px; border-radius: 999px;
  font-size: 14px; font-weight: 800; cursor: pointer; font-family: inherit;
  box-shadow: 0 4px 14px rgba(0,102,255,0.3);
  transition: transform 0.15s, filter 0.15s;
}.legacy-content .kb-next:hover { transform: translateY(-1px); filter: brightness(1.08); }.legacy-content .kbc-demo {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-card);
  padding: 22px 24px;
}.legacy-content .kbc-modes { display: flex; gap: 8px; margin-bottom: 14px; }.legacy-content .kbc-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 .kbc-mode:hover { border-color: rgba(0,102,255,0.4); }.legacy-content .kbc-mode.on-bad { border-color: var(--danger); background: rgba(220,38,38,0.05); color: var(--danger); }.legacy-content .kbc-mode.on-good { border-color: var(--success); background: rgba(22,163,74,0.05); color: var(--success); }.legacy-content .kbc-stage { display: flex; flex-direction: column; gap: 9px; min-height: 200px; }.legacy-content .kbc-bubble {
  max-width: 88%; padding: 11px 15px; border-radius: 12px;
  font-size: 13.5px; line-height: 1.8; color: var(--text);
  opacity: 0; transform: translateY(6px); transition: opacity 0.35s, transform 0.35s;
}.legacy-content .kbc-bubble.show { opacity: 1; transform: translateY(0); }.legacy-content .kbc-bubble.b-you { align-self: flex-end; background: rgba(0,102,255,0.07); border: 1px solid rgba(0,102,255,0.15); }.legacy-content .kbc-bubble.b-ai { align-self: flex-start; background: rgba(100,116,139,0.06); border: 1px solid rgba(100,116,139,0.13); }.legacy-content .kbc-bubble.b-ai.good { background: rgba(22,163,74,0.05); border-color: rgba(22,163,74,0.2); }.legacy-content .kbc-bubble b { color: var(--accent); }.legacy-content .kbc-bubble.good b { color: var(--success); }.legacy-content .kbc-src {
  display: inline-block; margin-top: 7px; padding: 3px 11px; border-radius: 999px;
  font-size: 11.5px; font-weight: 800;
  background: rgba(22,163,74,0.1); color: var(--success);
}.legacy-content .kbc-verdict {
  margin-top: 13px; border-top: 1.5px dashed var(--border); padding-top: 12px;
  font-size: 13px; font-weight: 700; line-height: 1.7;
  opacity: 0; transition: opacity 0.4s;
}.legacy-content .kbc-verdict.show { opacity: 1; }.legacy-content .kbc-verdict.bad { color: var(--danger); }.legacy-content .kbc-verdict.good { color: var(--success); }.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 .qa-answer p { font-size: 15px; }.legacy-content .kb-dots { flex-direction: column; }.legacy-content .kbc-modes { flex-direction: column; }.legacy-content .kbc-bubble { max-width: 100%; }.legacy-content .pt-grid { grid-template-columns: 1fr; }}