@keyframes _si{from{opacity:0}to{opacity:1}}

.legacy-content .lesson-header .kicker {color:var(--vibe)}.legacy-content code {color:var(--vibe-deep)}.legacy-content .l-callout {background:rgba(13,148,136,.05);border-color:rgba(13,148,136,.25)}.legacy-content .l-callout b {color:var(--vibe-deep)}.legacy-content .desc {font-size:16px;color:var(--sub);line-height:1.8}.legacy-content .cards3 {display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}.legacy-content .cards3 h3 {font-size:16px;font-weight:800;margin-bottom:6px}.legacy-content .cards3 p {font-size:14px;color:var(--sub)}.legacy-content .mode-list {display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}.legacy-content .mode-btn {display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:12px;border:1.5px solid var(--border);background:var(--card);cursor:pointer;transition:all .2s;font-family:inherit;text-align:left;width:100%;min-height:44px}.legacy-content .mode-btn:hover {border-color:rgba(0,0,0,.15)}.legacy-content .mode-btn.active {border-color:var(--vibe);background:rgba(13,148,136,.05);box-shadow:0 2px 12px rgba(0,0,0,.06)}.legacy-content .mode-icon {width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0;background:rgba(13,148,136,.1)}.legacy-content .mb {flex:1;min-width:0}.legacy-content .mb h4 {font-size:16px;font-weight:800;color:var(--text);margin-bottom:2px}.legacy-content .mode-btn.active .mb h4 {color:var(--vibe-deep)}.legacy-content .mb p {font-size:13px;color:var(--sub)}.legacy-content .vis-wrap {background:var(--card);border:1.5px solid var(--border);border-radius:14px;display:flex;flex-direction:column;overflow:hidden;margin-top:14px}.legacy-content .vis-bar {padding:10px 16px;border-bottom:1px solid var(--border);background:rgba(0,0,0,0.02);display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.legacy-content .vis-bar-title {font-size:14px;font-weight:700;color:var(--sub)}.legacy-content .vis-body {min-height:300px;max-height:440px;padding:16px;overflow-y:auto;display:flex;flex-direction:column;gap:8px}.legacy-content .msg {padding:10px 14px;border-radius:10px;font-size:14.5px;line-height:1.6;flex-shrink:0;transition:all .3s ease}.legacy-content .msg.user {background:rgba(8,145,178,.09);color:var(--cyan)}.legacy-content .msg.pin {background:rgba(13,148,136,.1);color:var(--vibe-deep);font-weight:700}.legacy-content .msg.ai {background:rgba(22,163,74,.08);color:var(--success)}.legacy-content .msg.gap {background:rgba(0,0,0,.04);color:var(--sub);font-size:13px}.legacy-content .msg.anchor {background:rgba(13,148,136,.12);color:var(--vibe-deep);font-weight:600}.legacy-content .msg.drift {background:rgba(220,38,38,.08);color:var(--danger);font-weight:700}.legacy-content .msg.ok {background:rgba(22,163,74,.1);color:var(--success);font-weight:700}.legacy-content .msg.note {background:rgba(217,119,6,.09);color:var(--amber);font-size:13.5px;font-weight:600}.legacy-content .msg.out {opacity:.35;text-decoration:line-through;background:rgba(0,0,0,.04);color:var(--sub);font-weight:400}.legacy-content .slider-row {display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:14px}.legacy-content .slider-row label {font-size:14px;font-weight:700;color:var(--sub);flex-shrink:0}.legacy-content .slider-row input[type=range] {flex:1;min-width:180px;accent-color:var(--vibe);height:44px;cursor:pointer}.legacy-content .round-badge {font-size:15px;font-weight:800;color:var(--vibe-deep);background:rgba(13,148,136,.1);padding:6px 14px;border-radius:8px;min-width:88px;text-align:center}.legacy-content .win-hint {font-size:13px;color:var(--sub);margin-top:8px}.legacy-content .ctrl-row {display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:12px}.legacy-content .btn {padding:11px 22px;border-radius:9px;font-size:15px;font-weight:700;border:none;cursor:pointer;font-family:inherit;transition:all .2s;min-height:44px}.legacy-content .btn-p {background:var(--vibe);color:#fff}.legacy-content .btn-p:hover {filter:brightness(1.08)}.legacy-content .btn-p:disabled {opacity:.35;cursor:not-allowed}.legacy-content .btn-r {background:rgba(0,0,0,0.05);color:var(--sub);border:1px solid var(--border)}.legacy-content .hint {font-size:13px;color:var(--sub)}.legacy-content .point-card h3 {font-size:15.5px;font-weight:800;margin-bottom:6px}.legacy-content .point-card p {font-size:14px;color:var(--sub)}.legacy-content .fmt-line {margin-top:8px;padding:9px 12px;border-radius:8px;background:rgba(13,148,136,.07);font-family:"SF Mono","Fira Code",Menlo,monospace;font-size:13px;color:var(--vibe-deep)}.legacy-content .detect-wrap {background:var(--card);border:1.5px solid var(--border);border-radius:14px;overflow:hidden;margin-top:12px}.legacy-content .detect-hd {padding:10px 16px;border-bottom:1px solid var(--border);background:rgba(0,0,0,.02);display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}.legacy-content .detect-hd b {font-size:14px;color:var(--sub)}.legacy-content .detect-count {font-size:13px;font-weight:800;color:var(--danger)}.legacy-content .detect-body {padding:18px 20px;font-size:15.5px;line-height:2.1;color:var(--text)}.legacy-content .hit {background:rgba(220,38,38,.16);border-radius:4px;padding:1px 3px;cursor:pointer;transition:background .2s}.legacy-content .hit:hover {background:rgba(220,38,38,.28)}.legacy-content .hit.active {background:rgba(220,38,38,.34);outline:2px solid var(--danger)}.legacy-content .rule-panel {margin-top:12px;background:rgba(217,119,6,.06);border:1.5px solid rgba(217,119,6,.3);border-radius:12px;padding:14px 18px;display:none}.legacy-content .rule-panel.show {display:block}.legacy-content .rule-panel .rp-name {font-size:15px;font-weight:800;color:var(--danger);margin-bottom:4px}.legacy-content .rule-panel .rp-rule {font-size:13px;font-weight:700;color:var(--amber);margin-bottom:6px}.legacy-content .rule-panel .rp-fix {font-size:14px;color:var(--text)}.legacy-content .cmp-grid {display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}.legacy-content .cmp-box {border-radius:14px;overflow:hidden;border:1.5px solid transparent;display:flex;flex-direction:column}.legacy-content .cmp-box.bad {border-color:rgba(220,38,38,.25);background:rgba(220,38,38,.04)}.legacy-content .cmp-box.good {border-color:rgba(22,163,74,.3);background:rgba(22,163,74,.04)}.legacy-content .cb-label {padding:10px 16px;font-size:14px;font-weight:800;border-bottom:1px solid rgba(0,0,0,.06)}.legacy-content .cmp-box.bad .cb-label {color:var(--danger)}.legacy-content .cmp-box.good .cb-label {color:var(--success)}.legacy-content .cb-text {padding:14px 16px;font-size:14.5px;line-height:1.9;color:var(--text)}.legacy-content .src-note {margin-top:24px;font-size:13px;color:var(--sub)}.legacy-content .src-note a {color:var(--vibe-deep)}@media (max-width:768px){.legacy-content .cards3 {grid-template-columns:1fr}.legacy-content .mode-list {grid-template-columns:1fr}.legacy-content .cmp-grid {grid-template-columns:1fr}.legacy-content .detect-body {font-size:14.5px}}