@keyframes _si{to{opacity:1}}

.legacy-content .evolution-strip {display:flex;align-items:center;gap:0;margin:16px 0;flex-wrap:wrap}.legacy-content .evo-node {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);padding:16px 20px;box-shadow:var(--shadow-card);flex:1;min-width:200px}.legacy-content .evo-node.active {border-color:var(--accent);background:rgba(0,102,255,.03)}.legacy-content .evo-node .evo-label {font-size:11px;font-weight:700;color:var(--sub);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px}.legacy-content .evo-node .evo-title {font-size:16px;font-weight:800;color:var(--text)}.legacy-content .evo-node.active .evo-title {color:var(--accent)}.legacy-content .evo-node .evo-desc {font-size:13px;color:var(--sub);line-height:1.6;margin-top:6px}.legacy-content .evo-arrow {flex-shrink:0;padding:0 8px;color:var(--sub)}@media(max-width:768px){.legacy-content .evolution-strip {flex-direction:column;gap:12px}.legacy-content .evo-arrow {transform:rotate(90deg)}}.legacy-content .context-diagram {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-card);margin:16px 0}.legacy-content .ctx-ring {display:flex;flex-direction:column;gap:8px;align-items:center}.legacy-content .ctx-layer {display:flex;align-items:center;gap:10px;width:100%;max-width:600px;padding:12px 18px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;color:var(--text)}.legacy-content .ctx-layer.l1 {background:rgba(0,102,255,.08);border:1px solid rgba(0,102,255,.2)}.legacy-content .ctx-layer.l2 {background:rgba(124,58,237,.06);border:1px solid rgba(124,58,237,.15)}.legacy-content .ctx-layer.l3 {background:rgba(8,145,178,.06);border:1px solid rgba(8,145,178,.15)}.legacy-content .ctx-layer.l4 {background:rgba(217,119,6,.06);border:1px solid rgba(217,119,6,.15)}.legacy-content .ctx-layer.l5 {background:rgba(22,163,74,.06);border:1px solid rgba(22,163,74,.15)}.legacy-content .ctx-layer .ctx-icon {flex-shrink:0;width:28px;height:28px;border-radius:7px;display:flex;align-items:center;justify-content:center}.legacy-content .ctx-layer.l1 .ctx-icon {background:rgba(0,102,255,.12);color:var(--accent)}.legacy-content .ctx-layer.l2 .ctx-icon {background:rgba(124,58,237,.12);color:var(--purple)}.legacy-content .ctx-layer.l3 .ctx-icon {background:rgba(8,145,178,.12);color:var(--cyan)}.legacy-content .ctx-layer.l4 .ctx-icon {background:rgba(217,119,6,.12);color:var(--amber)}.legacy-content .ctx-layer.l5 .ctx-icon {background:rgba(22,163,74,.12);color:var(--success)}.legacy-content .ctx-layer .ctx-name {flex:1}.legacy-content .ctx-caption {text-align:center;font-size:12px;color:var(--sub);margin-top:12px;font-weight:600}.legacy-content .problem-grid {display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;margin:16px 0}@media(max-width:768px){.legacy-content .problem-grid {grid-template-columns:1fr}}.legacy-content .problem-card {background:var(--card);border:1.5px solid rgba(220,38,38,.2);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-card);text-align:center}.legacy-content .problem-card .prob-icon {width:44px;height:44px;border-radius:12px;background:rgba(220,38,38,.06);display:flex;align-items:center;justify-content:center;margin:0 auto 12px;color:var(--danger)}.legacy-content .problem-card .prob-title {font-size:14px;font-weight:800;color:var(--danger);margin-bottom:8px}.legacy-content .problem-card .prob-desc {font-size:13px;color:var(--sub);line-height:1.6}.legacy-content .principle-section {margin:16px 0}.legacy-content .principle-item {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-card);margin-bottom:14px;display:flex;gap:16px;align-items:flex-start}.legacy-content .principle-item .pi-icon {flex-shrink:0;width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:rgba(0,102,255,.08);color:var(--accent)}.legacy-content .principle-item .pi-content {flex:1}.legacy-content .principle-item .pi-title {font-size:15px;font-weight:800;color:var(--text);margin-bottom:6px}.legacy-content .principle-item .pi-desc {font-size:14px;color:var(--sub);line-height:1.7}.legacy-content .principle-item .pi-desc b {color:var(--text)}.legacy-content .height-diagram {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow-card);margin:12px 0}.legacy-content .height-scale {display:flex;align-items:stretch;gap:0;height:160px;margin:12px 0}.legacy-content .hs-bar {flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;position:relative}.legacy-content .hs-fill {width:60%;border-radius:6px 6px 0 0;position:relative}.legacy-content .hs-bar:nth-child(1) .hs-fill {height:30%;background:rgba(220,38,38,.2);border:1px solid rgba(220,38,38,.3)}.legacy-content .hs-bar:nth-child(2) .hs-fill {height:65%;background:rgba(22,163,74,.15);border:1px solid rgba(22,163,74,.3)}.legacy-content .hs-bar:nth-child(3) .hs-fill {height:100%;background:rgba(220,38,38,.2);border:1px solid rgba(220,38,38,.3)}.legacy-content .hs-label {font-size:11px;font-weight:700;text-align:center;margin-top:8px;color:var(--sub);line-height:1.3}.legacy-content .hs-tag {position:absolute;top:-20px;left:50%;transform:translateX(-50%);font-size:10px;font-weight:700;padding:2px 6px;border-radius:4px;white-space:nowrap}.legacy-content .hs-bar:nth-child(1) .hs-tag {background:rgba(220,38,38,.1);color:var(--danger)}.legacy-content .hs-bar:nth-child(2) .hs-tag {background:rgba(22,163,74,.1);color:var(--success)}.legacy-content .hs-bar:nth-child(3) .hs-tag {background:rgba(220,38,38,.1);color:var(--danger)}.legacy-content .height-caption {text-align:center;font-size:13px;color:var(--sub);margin-top:4px;line-height:1.5}.legacy-content .n2-box {background:rgba(124,58,237,.04);border:1.5px solid rgba(124,58,237,.18);border-radius:var(--radius);padding:20px 24px;margin:16px 0}.legacy-content .n2-box .n2-title {font-size:15px;font-weight:800;color:var(--purple);margin-bottom:10px;display:flex;align-items:center;gap:8px}.legacy-content .n2-box .n2-desc {font-size:14px;color:var(--text);line-height:1.8}.legacy-content .n2-box .n2-formula {font-family:"SF Mono","Fira Code",Menlo,monospace;font-size:14px;background:rgba(0,0,0,.04);padding:8px 14px;border-radius:8px;margin:10px 0;display:inline-block;color:var(--purple);font-weight:600}.legacy-content .takeaway {background:rgba(0,102,255,.04);border:1.5px solid rgba(0,102,255,.18);border-radius:var(--radius);padding:18px 22px;font-size:15px;color:var(--text);display:flex;gap:12px;line-height:1.7;margin-top:24px}.legacy-content .takeaway b {color:var(--accent)}.legacy-content .context-rot-sim {background:var(--card);border:1.5px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-card);margin:16px 0}.legacy-content .crs-controls {margin-bottom:24px}.legacy-content .crs-slider-row {display:flex;align-items:center;gap:16px;flex-wrap:wrap}.legacy-content .crs-slider-label {font-size:13px;font-weight:700;color:var(--sub);white-space:nowrap}.legacy-content .crs-range {flex:1;min-width:200px;-webkit-appearance:none;appearance:none;height:6px;border-radius:3px;background:var(--border);outline:none;cursor:pointer;transition:background .2s}.legacy-content .crs-range::-webkit-slider-thumb {-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--accent);border:3px solid #fff;box-shadow:0 1px 4px rgba(0,0,0,.18);cursor:pointer;transition:transform .15s}.legacy-content .crs-range::-webkit-slider-thumb:hover {transform:scale(1.15)}.legacy-content .crs-range::-moz-range-thumb {width:22px;height:22px;border-radius:50%;background:var(--accent);border:3px solid #fff;box-shadow:0 1px 4px rgba(0,0,0,.18);cursor:pointer}.legacy-content .crs-token-display {font-size:20px;font-weight:800;color:var(--accent);min-width:110px;text-align:right;font-variant-numeric:tabular-nums}.legacy-content .crs-analogy {font-size:13px;color:var(--sub);margin-top:10px;padding:6px 14px;background:rgba(0,0,0,.03);border-radius:var(--radius-sm);display:inline-block;transition:all .3s}.legacy-content .crs-status {margin-top:10px;font-size:14px;font-weight:700;padding:8px 16px;border-radius:var(--radius-sm);display:inline-block;transition:all .4s}.legacy-content .crs-status.level-safe {color:var(--success);background:rgba(22,163,74,.08)}.legacy-content .crs-status.level-warn {color:var(--amber);background:rgba(217,119,6,.08)}.legacy-content .crs-status.level-danger {color:#e65100;background:rgba(230,81,0,.08)}.legacy-content .crs-status.level-critical {color:var(--danger);background:rgba(220,38,38,.1)}.legacy-content .crs-metrics {display:grid;grid-template-columns:1fr 1fr;gap:24px}@media(max-width:768px){.legacy-content .crs-metrics {grid-template-columns:1fr}}.legacy-content .crs-metric-block {background:rgba(0,0,0,.02);border-radius:var(--radius-sm);padding:20px}.legacy-content .crs-metric-title {font-size:13px;font-weight:700;color:var(--sub);text-transform:uppercase;letter-spacing:.5px;margin-bottom:14px}.legacy-content .crs-bar-wrap {display:flex;align-items:center;gap:12px}.legacy-content .crs-bar-bg {flex:1;height:28px;background:var(--border);border-radius:6px;overflow:hidden;position:relative}.legacy-content .crs-bar-fill {height:100%;border-radius:6px;transition:width .5s cubic-bezier(.4,0,.2,1),background .5s;background:var(--accent)}.legacy-content .crs-bar-fill.bar-good {background:var(--success)}.legacy-content .crs-bar-fill.bar-ok {background:var(--accent)}.legacy-content .crs-bar-fill.bar-warn {background:var(--amber)}.legacy-content .crs-bar-fill.bar-bad {background:var(--danger)}.legacy-content .crs-bar-value {font-size:18px;font-weight:800;min-width:48px;text-align:right;font-variant-numeric:tabular-nums;transition:color .3s}.legacy-content .crs-bar-value.val-good {color:var(--success)}.legacy-content .crs-bar-value.val-ok {color:var(--accent)}.legacy-content .crs-bar-value.val-warn {color:var(--amber)}.legacy-content .crs-bar-value.val-bad {color:var(--danger)}.legacy-content .crs-bar-labels {display:flex;justify-content:space-between;font-size:11px;color:var(--sub);margin-top:6px;opacity:.6}.legacy-content .crs-grid {display:grid;grid-template-columns:repeat(10,1fr);gap:3px;max-width:280px}.legacy-content .crs-cell {width:100%;aspect-ratio:1;border-radius:3px;transition:background .5s cubic-bezier(.4,0,.2,1)}.legacy-content .crs-grid-legend {display:flex;align-items:center;gap:6px;margin-top:10px;font-size:11px;color:var(--sub)}.legacy-content .crs-legend-bright {display:inline-block;width:12px;height:12px;border-radius:2px;background:var(--accent)}.legacy-content .crs-legend-dim {display:inline-block;width:12px;height:12px;border-radius:2px;background:rgba(0,0,0,.08);margin-left:8px}