@keyframes _si{to{opacity:1}}

.legacy-content .duo-grid {display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:8px}@media(max-width:768px){.legacy-content .duo-grid {grid-template-columns:1fr}}.legacy-content .duo-panel {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-card);position:relative;overflow:hidden;min-height:340px}.legacy-content .duo-panel .panel-badge {position:absolute;top:0;left:0;right:0;height:4px}.legacy-content .duo-panel h3 {font-size:18px;font-weight:900;margin-bottom:6px;display:flex;align-items:center;gap:8px}.legacy-content .duo-panel .panel-desc {font-size:13px;color:var(--sub);line-height:1.6;margin-bottom:18px}.legacy-content .board-area {background:var(--bg);border:1.5px solid var(--border);border-radius:var(--radius-sm);height:180px;position:relative;overflow:hidden;padding:14px}.legacy-content .board-line {font-size:13px;color:var(--text);line-height:1.8;transition:opacity .4s,transform .4s;position:relative}.legacy-content .board-line.fading {opacity:0;transform:translateX(-20px)}.legacy-content .board-line.erased {opacity:.15;text-decoration:line-through;color:var(--sub)}.legacy-content .board-wipe {position:absolute;top:0;left:0;right:0;bottom:0;background:var(--bg);opacity:0;transition:opacity .5s;pointer-events:none;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800;color:var(--sub)}.legacy-content .board-wipe.active {opacity:1}.legacy-content .notebook-area {background:var(--bg);border:1.5px solid var(--border);border-radius:var(--radius-sm);height:180px;position:relative;overflow:hidden;padding:14px}.legacy-content .nb-line {font-size:13px;color:var(--text);line-height:1.8;opacity:0;transform:translateY(8px);transition:opacity .4s,transform .4s}.legacy-content .nb-line.show {opacity:1;transform:translateY(0)}.legacy-content .nb-page {font-size:11px;color:var(--sub);font-weight:700;position:absolute;bottom:8px;right:12px}.legacy-content .anim-controls {display:flex;gap:10px;margin-top:14px;justify-content:center}.legacy-content .anim-btn {padding:9px 22px;border-radius:999px;font-size:13px;font-weight:700;cursor:pointer;border:none;font-family:inherit;transition:transform .15s,box-shadow .15s}.legacy-content .anim-btn:hover {transform:translateY(-1px)}.legacy-content .anim-btn:active {transform:translateY(0)}.legacy-content .anim-btn.primary {background:var(--accent);color:#fff;box-shadow:0 3px 10px rgba(0,102,255,.2)}.legacy-content .anim-btn.secondary {background:var(--bg);color:var(--text);border:1.5px solid var(--border);box-shadow:none}.legacy-content .anim-btn:disabled {opacity:.5;cursor:not-allowed;transform:none}.legacy-content .vs-card {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow-card);margin-top:16px}.legacy-content .vs-row {display:grid;grid-template-columns:1fr auto 1fr;gap:16px;align-items:center}@media(max-width:768px){.legacy-content .vs-row {grid-template-columns:1fr;gap:8px}.legacy-content .vs-divider {display:none}}.legacy-content .vs-item {text-align:center;padding:14px}.legacy-content .vs-item .vs-icon {font-size:28px;margin-bottom:8px}.legacy-content .vs-item .vs-label {font-size:14px;font-weight:800;color:var(--text);margin-bottom:4px}.legacy-content .vs-item .vs-desc {font-size:12px;color:var(--sub);line-height:1.5}.legacy-content .vs-divider {font-size:24px;font-weight:900;color:var(--sub)}.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:24px}.legacy-content .takeaway b {color:var(--purple)}