@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 .rs-demo {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-card);
  padding: 22px 24px;
}.legacy-content .rs-question {
  background: rgba(100,116,139,0.06); border: 1px solid rgba(100,116,139,0.12);
  border-radius: var(--radius-sm); padding: 12px 15px;
  font-size: 13.5px; color: var(--text); line-height: 1.8; margin-bottom: 14px;
}.legacy-content .rs-question b { color: var(--accent); }.legacy-content .rs-modes { display: flex; gap: 8px; margin-bottom: 14px; }.legacy-content .rs-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 .rs-mode:hover { border-color: rgba(0,102,255,0.4); }.legacy-content .rs-mode.on-fast { border-color: var(--amber); background: rgba(217,119,6,0.05); color: var(--amber); }.legacy-content .rs-mode.on-deep { border-color: var(--purple); background: rgba(124,58,237,0.05); color: var(--purple); }.legacy-content .rs-stage { display: flex; flex-direction: column; gap: 7px; min-height: 230px; }.legacy-content .rs-step {
  padding: 9px 13px; border-radius: 10px;
  font-size: 13.5px; color: var(--text); line-height: 1.7;
  opacity: 0; transform: translateY(6px);
  transition: opacity 0.35s, transform 0.35s;
}.legacy-content .rs-step.show { opacity: 1; transform: translateY(0); }.legacy-content .rs-step.s-draft {
  background: rgba(100,116,139,0.05); border: 1px dashed rgba(100,116,139,0.25);
  color: var(--sub); font-size: 12.5px;
  font-family: "SF Mono", "Fira Code", Menlo, monospace;
}.legacy-content .rs-step.s-wrong { background: rgba(220,38,38,0.05); border: 1px solid rgba(220,38,38,0.25); }.legacy-content .rs-step.s-wrong b { color: var(--danger); }.legacy-content .rs-step.s-right { background: rgba(22,163,74,0.05); border: 1px solid rgba(22,163,74,0.2); }.legacy-content .rs-step.s-right b { color: var(--success); }.legacy-content .rs-meter { margin-top: 14px; border-top: 1.5px dashed var(--border); padding-top: 14px; opacity: 0; transition: opacity 0.4s; }.legacy-content .rs-meter.show { opacity: 1; }.legacy-content .rs-bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }.legacy-content .rs-bar-row .rs-blab { font-size: 12px; font-weight: 800; color: var(--sub); width: 36px; flex-shrink: 0; }.legacy-content .rs-bar-track { flex: 1; height: 12px; background: rgba(0,0,0,0.05); border-radius: 999px; overflow: hidden; }.legacy-content .rs-bar-fill { height: 100%; border-radius: 999px; width: 0; transition: width 0.8s ease; }.legacy-content .rs-bar-fill.f-time { background: var(--accent); }.legacy-content .rs-bar-fill.f-cost { background: var(--amber); }.legacy-content .rs-bar-row .rs-bval { font-size: 12px; font-weight: 700; color: var(--text); width: 92px; flex-shrink: 0; text-align: right; }.legacy-content .rs-verdict { font-size: 12.5px; color: var(--sub); line-height: 1.75; margin-top: 6px; }.legacy-content .qz-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }.legacy-content .qz-card {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow-card);
}.legacy-content .qz-q { font-size: 14px; font-weight: 800; color: var(--text); margin-bottom: 10px; }.legacy-content .qz-btns { display: flex; gap: 8px; }.legacy-content .qz-btn {
  flex: 1; border: 1.5px solid var(--border); background: var(--card);
  border-radius: 999px; padding: 7px 0;
  font-size: 13px; font-weight: 800; color: var(--sub);
  cursor: pointer; font-family: inherit; transition: all 0.15s;
}.legacy-content .qz-btn:hover { border-color: rgba(0,102,255,0.4); }.legacy-content .qz-btn.pick-right { border-color: var(--success); background: rgba(22,163,74,0.07); color: var(--success); }.legacy-content .qz-btn.pick-wrong { border-color: var(--danger); background: rgba(220,38,38,0.06); color: var(--danger); }.legacy-content .qz-verdict {
  margin-top: 10px; font-size: 12.5px; line-height: 1.75; color: var(--sub);
  border-radius: 8px; padding: 8px 11px; display: none;
}.legacy-content .qz-verdict.show { display: block; }.legacy-content .qz-verdict.v-right { background: rgba(22,163,74,0.06); }.legacy-content .qz-verdict.v-wrong { background: rgba(220,38,38,0.05); }.legacy-content .qz-verdict b.ok { color: var(--success); }.legacy-content .qz-verdict b.no { color: var(--danger); }.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 .rs-modes { flex-direction: column; }.legacy-content .qz-grid { grid-template-columns: 1fr; }.legacy-content .rs-bar-row .rs-bval { width: 78px; }}