@keyframes _si{to{opacity:1}}

.legacy-content .hero-banner {background:linear-gradient(135deg, #e9f0e6 0%, #fffefa 100%);border-radius:var(--radius);padding:48px 36px;margin-bottom:32px;color:#fff;position:relative;overflow:hidden}.legacy-content .hero-banner::after {content:'';position:absolute;top:-50%;right:-20%;width:60%;height:200%;background:radial-gradient(ellipse,rgba(16,185,129,.15) 0%,transparent 70%);pointer-events:none}.legacy-content .hero-banner .hb-kicker {font-size:12px;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin-bottom:12px}.legacy-content .hero-banner h2 {font-size:26px;font-weight:900;line-height:1.4;margin-bottom:14px}@media(max-width:768px){.legacy-content .hero-banner h2 {font-size:20px}}.legacy-content .hero-banner .hb-sub {font-size:15px;color:rgba(255,255,255,.7);line-height:1.7;max-width:640px}.legacy-content .method-section {margin:40px 0}.legacy-content .method-section .sec-label {margin-bottom:20px}.legacy-content .method-card {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);padding:28px 28px 24px;margin:20px 0;box-shadow:var(--shadow-card);position:relative;overflow:hidden}.legacy-content .method-card .mc-badge {position:absolute;top:0;right:0;background:var(--accent);color:#fff;font-size:11px;font-weight:800;padding:6px 14px;border-radius:0 0 0 12px;letter-spacing:.5px}.legacy-content .method-card .mc-head {display:flex;align-items:center;gap:14px;margin-bottom:16px}.legacy-content .method-card .mc-icon {width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:22px}.legacy-content .method-card .mc-title {font-size:18px;font-weight:800;color:var(--text)}.legacy-content .method-card .mc-subtitle {font-size:13px;color:var(--sub);font-weight:500;margin-top:2px}.legacy-content .method-card .mc-body {font-size:14.5px;color:var(--sub);line-height:1.8}.legacy-content .method-card .mc-body b {color:var(--text)}.legacy-content .pipeline-list {list-style:none;padding:0;margin:16px 0;display:flex;flex-wrap:wrap;gap:8px;align-items:center}.legacy-content .pipeline-list li {background:rgba(0,102,255,.06);border:1px solid rgba(0,102,255,.15);border-radius:8px;padding:6px 14px;font-size:13px;font-weight:600;color:var(--accent)}.legacy-content .pipeline-list .arrow {background:none;border:none;padding:0 4px;color:var(--sub);font-size:16px}.legacy-content .role-grid {display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px;margin:16px 0}.legacy-content .role-chip {background:var(--bg-dim,#f8f9fa);border:1px solid var(--border);border-radius:10px;padding:12px 14px;text-align:center;font-size:13px;font-weight:700;color:var(--text)}.legacy-content .role-chip span {display:block;font-size:11px;font-weight:400;color:var(--sub);margin-top:4px}.legacy-content .fig-wrap {margin:28px 0;text-align:center}.legacy-content .fig-wrap img {max-width:100%;border-radius:var(--radius);border:1.5px solid var(--border);box-shadow:var(--shadow-card)}.legacy-content .fig-wrap .fig-cap {font-size:12px;color:var(--sub);margin-top:10px;line-height:1.6}.legacy-content .mcts-steps {list-style:none;padding:0;margin:20px 0;counter-reset:mcts}.legacy-content .mcts-steps li {position:relative;padding:14px 18px 14px 54px;margin-bottom:10px;background:var(--bg-dim,#f8f9fa);border-radius:10px;font-size:14px;line-height:1.7;color:var(--text);counter-increment:mcts}.legacy-content .mcts-steps li::before {content:counter(mcts);position:absolute;left:16px;top:14px;width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center}.legacy-content .mcts-steps li b {color:var(--accent)}.legacy-content .compare-table {width:100%;border-collapse:separate;border-spacing:0;border-radius:12px;overflow:hidden;border:1.5px solid var(--border);margin:24px 0;font-size:13.5px}.legacy-content .compare-table th {padding:12px 16px;font-weight:700;text-align:left;background:var(--bg-dim,#f8f9fa);color:var(--sub)}.legacy-content .compare-table td {padding:11px 16px;border-top:1px solid var(--border);line-height:1.6;color:var(--text)}.legacy-content .compare-table tr:hover td {background:rgba(0,102,255,.02)}.legacy-content .insight-box {background:linear-gradient(135deg,#ecfdf5,#f0fdf4);border:1.5px solid #a7f3d0;border-radius:var(--radius);padding:24px 28px;margin-top:36px}.legacy-content .insight-box h3 {font-size:17px;font-weight:800;color:#065f46;margin-bottom:14px;display:flex;align-items:center;gap:10px}.legacy-content .insight-box ul {list-style:none;padding:0;margin:0}.legacy-content .insight-box li {font-size:14.5px;color:#1e3a2e;line-height:1.8;padding:6px 0 6px 22px;position:relative}.legacy-content .insight-box li::before {content:'';position:absolute;left:0;top:14px;width:8px;height:8px;border-radius:50%;background:#10b981}.legacy-content .insight-box li b {color:#065f46}.legacy-content .mcts-steps {margin:24px 0}.legacy-content .mcts-step-card {display:flex;gap:16px;align-items:flex-start;padding:18px 20px;background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);margin-bottom:12px;box-shadow:var(--shadow-card);transition:border-color .2s}.legacy-content .mcts-step-card:hover {border-color:rgba(0,102,255,.2)}.legacy-content .msc-num {width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;font-size:14px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0}.legacy-content .msc-body {flex:1;min-width:0}.legacy-content .msc-title {font-size:15px;font-weight:800;color:var(--text);margin-bottom:8px}.legacy-content .msc-flow {display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:8px}.legacy-content .flow-chip {padding:5px 12px;border-radius:8px;font-size:12px;font-weight:700;white-space:nowrap}.legacy-content .flow-chip.root {background:rgba(100,116,139,.1);color:#475569;border:1px solid rgba(100,116,139,.2)}.legacy-content .flow-chip.c1 {background:rgba(59,130,246,.08);color:#2563eb;border:1px solid rgba(59,130,246,.2)}.legacy-content .flow-chip.c2 {background:rgba(139,92,246,.08);color:#7c3aed;border:1px solid rgba(139,92,246,.2)}.legacy-content .flow-chip.c3 {background:rgba(245,158,11,.08);color:#d97706;border:1px solid rgba(245,158,11,.2)}.legacy-content .flow-chip.c4 {background:rgba(59,130,246,.08);color:#2563eb;border:1px solid rgba(59,130,246,.2)}.legacy-content .flow-chip.selected {background:rgba(59,130,246,.15);border:1.5px solid #3b82f6;box-shadow:0 0 8px rgba(59,130,246,.15)}.legacy-content .flow-chip.best {background:rgba(16,185,129,.1);color:#059669;border:1.5px solid #10b981;box-shadow:0 0 8px rgba(16,185,129,.15)}.legacy-content .flow-chip.pruned {background:rgba(0,0,0,.04);color:var(--muted);border:1px solid rgba(0,0,0,.08);text-decoration:line-through}.legacy-content .flow-score {font-size:12px;font-weight:800;color:var(--sub)}.legacy-content .flow-score.best-score {color:#059669}.legacy-content .msc-desc {font-size:13px;color:var(--sub);line-height:1.7}.legacy-content .plain-talk {background:linear-gradient(135deg,#fffbeb,#fef9c3);border:1.5px dashed #fbbf24;border-radius:var(--radius);padding:16px 20px;margin:14px 0 28px;font-size:14px;color:#713f12;line-height:1.85;display:flex;gap:12px;align-items:flex-start}.legacy-content .plain-talk .pt-icon {flex-shrink:0;font-size:18px;line-height:1.5}.legacy-content .plain-talk b {color:#92400e}.legacy-content .plain-talk .pt-tag {font-weight:800;color:#b45309}.legacy-content .sim-controls {display:flex;gap:10px;align-items:center;padding:16px;background:var(--card);border:1.5px solid var(--border);border-radius:12px;box-shadow:var(--shadow-card)}.legacy-content .sim-btn {background:var(--bg);border:1.5px solid var(--border);border-radius:8px;padding:6px 14px;font-size:13px;font-weight:700;color:var(--text);cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:6px;font-family:inherit}.legacy-content .sim-btn:hover {border-color:var(--accent);color:var(--accent)}.legacy-content .sim-btn.playing {background:var(--accent);color:#fff;border-color:var(--accent);pointer-events:none}.legacy-content .sim-status {font-size:13px;color:var(--sub);font-weight:600;margin-left:auto;font-variant-numeric:tabular-nums}.legacy-content .mcts-steps.interactive .mcts-step-card {transition:all .4s cubic-bezier(.23,1,.32,1)}.legacy-content .mcts-steps.interactive .flow-chip {transition:all .3s ease}.legacy-content .mcts-steps.interactive.sim-running .mcts-step-card {opacity:0;transform:translateX(-20px);display:none}.legacy-content .mcts-steps.interactive.sim-running .mcts-step-card.sim-show {opacity:1;transform:translateX(0);display:flex}.legacy-content .mcts-steps.interactive.sim-running .flow-chip {opacity:0;transform:scale(.8)}.legacy-content .mcts-steps.interactive.sim-running .flow-chip.sim-show {opacity:1;transform:scale(1)}.legacy-content .flow-chip.best {animation:bestGlow 2s ease-in-out infinite alternate !important}@keyframes bestGlow{from{box-shadow:0 0 8px rgba(16,185,129,.15)}to{box-shadow:0 0 16px rgba(16,185,129,.35)}}@media(max-width:600px){.legacy-content .method-card {padding:20px 18px}.legacy-content .pipeline-list {flex-direction:column;align-items:flex-start}.legacy-content .pipeline-list .arrow {transform:rotate(90deg)}.legacy-content .role-grid {grid-template-columns:1fr 1fr}.legacy-content .mcts-sim {padding:18px}.legacy-content .mcts-tree {min-height:180px;padding:14px}}

.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)}