@keyframes _si{to{opacity:1}}

.legacy-content .scene-cards {display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:8px}@media(max-width:900px){.legacy-content .scene-cards {grid-template-columns:1fr}}.legacy-content .scene-card {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-card);transition:all .3s;cursor:pointer}.legacy-content .scene-card:hover {border-color:var(--accent);box-shadow:0 8px 28px rgba(0,0,0,.1)}.legacy-content .scene-card .sc-head {padding:18px 18px 14px;display:flex;flex-direction:column;gap:8px}.legacy-content .scene-card .sc-icon {width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px}.legacy-content .scene-card .sc-title {font-size:16px;font-weight:800;color:var(--text)}.legacy-content .scene-card .sc-desc {font-size:13px;color:var(--sub);line-height:1.6}.legacy-content .scene-card .sc-flow {padding:0 18px 18px;display:none}.legacy-content .scene-card.open .sc-flow {display:block}.legacy-content .scene-card .sc-flow-inner {background:var(--bg);border-radius:var(--radius-sm);padding:14px;font-size:13px;color:var(--sub);line-height:1.7}.legacy-content .scene-card .sc-flow-inner b {color:var(--text)}.legacy-content .sc-expand {text-align:center;padding:0 18px 14px;font-size:12px;color:var(--accent);font-weight:700}.legacy-content .scene-card.open .sc-expand {display:none}.legacy-content .flow-anim {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);padding:20px;margin-top:8px;box-shadow:var(--shadow-card);overflow-x:auto}.legacy-content .flow-anim h4 {font-size:15px;font-weight:800;color:var(--text);margin:0 0 14px}.legacy-content .flow-diagram {display:flex;align-items:center;gap:8px;min-width:500px;padding:10px 0}.legacy-content .flow-node {padding:12px 16px;border-radius:10px;font-size:13px;font-weight:700;text-align:center;white-space:nowrap;border:1.5px solid var(--border);background:var(--card);transition:all .4s}.legacy-content .flow-node.active {transform:scale(1.05);box-shadow:0 4px 16px rgba(0,102,255,.2)}.legacy-content .flow-node.main {border-color:var(--accent);color:var(--accent);background:rgba(0,102,255,.05)}.legacy-content .flow-node.sub {border-color:var(--purple);color:var(--purple);background:rgba(124,58,237,.05)}.legacy-content .flow-node.result {border-color:var(--success);color:var(--success);background:rgba(22,163,74,.05)}.legacy-content .flow-arrow {color:var(--sub);font-size:16px;flex-shrink:0}.legacy-content .flow-parallel {display:flex;flex-direction:column;gap:6px;border:1px dashed var(--border);border-radius:10px;padding:10px}.legacy-content .flow-parallel .fp-label {font-size:11px;color:var(--sub);text-align:center;font-weight:700}.legacy-content .warning-box {background:rgba(217,119,6,.06);border:1.5px solid rgba(217,119,6,.2);border-radius:var(--radius);padding:16px 20px;margin-top:16px;font-size:14px;color:var(--text);line-height:1.7}.legacy-content .warning-box b {color:var(--amber)}.legacy-content .takeaway {background:rgba(124,58,237,.04);border:1.5px solid rgba(124,58,237,.18);border-radius:var(--radius);padding:16px 20px;font-size:15px;color:var(--text);display:flex;gap:10px;line-height:1.7;margin-top:20px}.legacy-content .takeaway b {color:var(--purple)}

.legacy-content .xa-tldr {margin:18px 0 4px;padding:14px 18px;background:rgba(0,102,255,0.04);border:1px solid rgba(0,102,255,0.16);border-radius:10px}.legacy-content .xa-tldr .xa-tldr-tag {display:block;font-size:11px;font-weight:800;letter-spacing:1px;color:var(--accent,#0066ff);margin-bottom:6px}.legacy-content .xa-tldr p {margin:0;font-size:15px;line-height:1.8;color:var(--text,#1f2937)}