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

.legacy-content .lesson-header .kicker {color:var(--vibe)}.legacy-content .desc {font-size:16px;color:var(--sub);line-height:1.8}.legacy-content .stage-row {display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:12px}.legacy-content .stage {padding:10px 8px;border-radius:10px;border:1.5px solid var(--border);background:var(--card);text-align:center;transition:all .25s}.legacy-content .stage .sg-num {font-size:12px;font-weight:800;color:var(--sub)}.legacy-content .stage .sg-name {font-size:14px;font-weight:800;color:var(--text);margin-top:2px}.legacy-content .stage.cur {border-color:var(--vibe);background:rgba(13,148,136,.06)}.legacy-content .stage.cur .sg-num, .legacy-content .stage.cur .sg-name {color:var(--vibe)}.legacy-content .stage.done {border-color:rgba(22,163,74,.3);background:rgba(22,163,74,.04)}.legacy-content .stage.done .sg-name {color:var(--success)}.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,.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:280px;max-height:460px;padding:16px;overflow-y:auto;display:flex;flex-direction:column;gap:8px}.legacy-content .msg {padding:10px 14px;border-radius:10px;font-size:14px;line-height:1.65;opacity:0;transform:translateY(8px);transition:all .35s ease;flex-shrink:0}.legacy-content .msg.show {opacity:1;transform:translateY(0)}.legacy-content .msg.user {background:rgba(8,145,178,.1);color:var(--cyan)}.legacy-content .msg.ai {background:rgba(0,0,0,.05);color:var(--text)}.legacy-content .msg.wait {background:rgba(217,119,6,.09);color:var(--amber);font-weight:600}.legacy-content .msg.ok {background:rgba(22,163,74,.09);color:var(--success);font-weight:600}.legacy-content .msg.prd {background:rgba(13,148,136,.06);border:1.5px solid rgba(13,148,136,.22);color:var(--text)}.legacy-content .msg.prd .prd-title {font-size:13px;font-weight:800;letter-spacing:.5px;text-transform:uppercase;color:var(--vibe);margin-bottom:6px}.legacy-content .msg.prd pre {margin:8px 0 0;padding:12px 14px;overflow:auto;border-radius:10px;background:var(--surface-soft);color:var(--muted);font-size:12.5px;line-height:1.6;border:none}.legacy-content .btn-appr {display:inline-block;margin-top:8px;padding:10px 22px;border-radius:9px;border:none;background:var(--success);color:#fff;font-size:14px;font-weight:700;cursor:pointer;font-family:inherit;min-height:44px}.legacy-content .btn-appr:hover {filter:brightness(1.08)}.legacy-content .ctrl-row {display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:12px}.legacy-content .btn {padding:11px 24px;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,.05);color:var(--sub);border:1px solid var(--border)}.legacy-content .hint {font-size:13px;color:var(--sub)}.legacy-content .slider-box {background:var(--card);border:1.5px solid var(--border);border-radius:14px;padding:20px 22px;margin-top:12px}.legacy-content .slider-row {display:flex;align-items:center;gap:16px;flex-wrap:wrap}.legacy-content .slider-row label {font-size:15px;font-weight:700;color:var(--text);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 .file-count {font-size:26px;font-weight:800;color:var(--vibe);min-width:70px;text-align:center}.legacy-content .file-count small {font-size:13px;font-weight:600;color:var(--sub)}.legacy-content .gate {margin-top:16px;border-radius:12px;padding:16px 18px;transition:all .25s}.legacy-content .gate.pass {background:rgba(22,163,74,.05);border:1.5px solid rgba(22,163,74,.3)}.legacy-content .gate.stop {background:rgba(217,119,6,.06);border:1.5px solid rgba(217,119,6,.35)}.legacy-content .gate-title {font-size:16px;font-weight:800;margin-bottom:6px}.legacy-content .gate.pass .gate-title {color:var(--success)}.legacy-content .gate.stop .gate-title {color:var(--amber)}.legacy-content .gate-desc {font-size:14px;color:var(--sub);line-height:1.7}.legacy-content .plan-list {margin-top:12px;display:flex;flex-direction:column;gap:8px}.legacy-content .plan-item {display:grid;grid-template-columns:200px 1fr 170px;gap:12px;padding:10px 14px;border-radius:10px;background:var(--card);border:1px solid var(--border);font-size:13.5px;align-items:center}.legacy-content .plan-item .pf {font-family:"SF Mono","Fira Code",Menlo,monospace;font-weight:700;color:var(--vibe-deep);word-break:break-all}.legacy-content .plan-item .pw {color:var(--text)}.legacy-content .plan-item .pd {color:var(--sub);font-size:12.5px}.legacy-content .elem-grid {display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px;margin-top:12px}.legacy-content .elem-grid .l-card h3 {font-size:16px;margin-bottom:4px}.legacy-content .elem-grid .l-card p {font-size:14px;color:var(--sub);line-height:1.7}.legacy-content .elem-num {display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;background:rgba(13,148,136,.1);color:var(--vibe);font-size:13px;font-weight:800;margin-bottom:8px}.legacy-content pre {margin:12px 0 0;padding:16px 18px;overflow:auto;border:1.5px solid var(--border);border-radius:12px;background:var(--surface-soft);color:var(--muted);font-size:13px;line-height:1.65}.legacy-content pre code {padding:0;background:none;color:var(--muted)}.legacy-content code {color:var(--vibe-deep);background:rgba(13,148,136,.08)}.legacy-content .vibe-callout {background:rgba(13,148,136,.05);border:1.5px solid rgba(13,148,136,.25);border-radius:14px;padding:18px 22px}.legacy-content .vibe-callout b {color:var(--vibe)}.legacy-content .src-note {margin-top:28px;font-size:13px;color:var(--sub)}.legacy-content .src-note a {color:var(--vibe-deep)}@media (max-width:768px){.legacy-content .stage-row {grid-template-columns:1fr 1fr}.legacy-content .elem-grid {grid-template-columns:1fr}.legacy-content .plan-item {grid-template-columns:1fr;gap:4px}.legacy-content .vis-body {min-height:220px}}

.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)}