.legacy-content * {box-sizing:border-box}.legacy-content .lesson {position:relative;max-width:1180px;margin:auto;padding:84px 28px 96px}.legacy-content .eyebrow, .legacy-content .tag, .legacy-content .label {font:700 12px ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.12em;color:var(--amber);text-transform:uppercase}.legacy-content h1 {max-width:980px;margin:16px 0;font-size:clamp(42px,7vw,84px);line-height:1.02;letter-spacing:-.045em}.legacy-content h1 span {color:var(--gold)}.legacy-content .lead {max-width:820px;font-size:clamp(17px,2vw,22px);color:var(--muted)}.legacy-content .chips {display:flex;gap:9px;flex-wrap:wrap;margin-top:28px}.legacy-content .tag {padding:8px 12px;border:1px solid var(--line);border-radius:999px;background:rgba(245,181,58,.06);text-transform:none;letter-spacing:.04em}.legacy-content section {margin-top:70px}.legacy-content .section-head {display:grid;grid-template-columns:110px 1fr;gap:20px;margin-bottom:24px}.legacy-content .num {color:var(--amber);font:700 13px ui-monospace,SFMono-Regular,Menlo,monospace}.legacy-content h2 {margin:0;font-size:clamp(28px,4vw,44px);line-height:1.12}.legacy-content h3 {margin:4px 0 10px;font-size:20px}.legacy-content p {margin:7px 0;color:var(--muted)}.legacy-content .grid {display:grid;grid-template-columns:repeat(12,1fr);gap:16px}.legacy-content .card {grid-column:span 4;padding:22px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(135deg, #e9f0e6 0%, #fffefa 100%);box-shadow:0 20px 50px rgba(0,0,0,.23)}.legacy-content .card.wide {grid-column:span 6}.legacy-content .card.full {grid-column:1/-1}.legacy-content .card .label {display:block;margin-bottom:7px}.legacy-content .objectives {counter-reset:o}.legacy-content .objectives .card {position:relative;padding-left:62px}.legacy-content .objectives .card::before {counter-increment:o;content:"0" counter(o);position:absolute;left:20px;top:23px;color:var(--gold);font:700 14px ui-monospace,SFMono-Regular,Menlo,monospace}.legacy-content .visual {padding:14px;border:1px solid var(--line);border-radius:24px;background:var(--surface-soft);overflow:hidden}.legacy-content .visual svg {display:block;width:100%;height:auto}.legacy-content .pipeline {display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.legacy-content .pipe {padding:18px;border:1px solid var(--line);border-radius:15px;background:var(--panel)}.legacy-content .pipe b {display:block;color:var(--gold);font-size:15px}.legacy-content .pipe small {color:var(--muted)}.legacy-content .tree {padding:22px;border:1px solid var(--line);border-radius:18px;background:var(--surface-soft);overflow:auto}.legacy-content .tree pre {margin:0;color:var(--muted);font:13px/1.7 ui-monospace,SFMono-Regular,Menlo,monospace}.legacy-content .tree .gold {color:var(--muted)}.legacy-content code {color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.legacy-content .path {display:block;margin-top:14px;color:var(--muted);font:12px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;overflow-wrap:anywhere}.legacy-content pre.code {margin:14px 0 0;padding:20px;overflow:auto;border:1px solid rgba(245,181,58,.18);border-radius:14px;background:var(--surface-soft);color:var(--muted);font:12.5px/1.65 ui-monospace,SFMono-Regular,Menlo,monospace}.legacy-content .gates {display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.legacy-content .gate {padding:24px;border:1px solid var(--line);border-radius:18px;background:var(--panel)}.legacy-content .gate .index {display:inline-grid;place-items:center;width:32px;height:32px;margin-bottom:12px;border:1px solid var(--amber);border-radius:50%;color:var(--gold);font:700 13px ui-monospace,SFMono-Regular,Menlo,monospace}.legacy-content .matrix {display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}.legacy-content .cell {padding:14px;background:var(--surface-soft);color:var(--muted)}.legacy-content .cell.head {font-weight:750;color:var(--gold);background:var(--surface-soft)}.legacy-content .ok {color:var(--green)}.legacy-content .stop {color:var(--red)}.legacy-content .callout {padding:24px;border-radius:16px;background:linear-gradient(90deg,rgba(245,181,58,.12),transparent)}.legacy-content .exercise {display:grid;grid-template-columns:140px 1fr;gap:24px;padding:26px;border:1px solid var(--line);border-radius:18px;background:var(--surface-soft)}.legacy-content .exercise b {color:var(--gold)}.legacy-content ol {margin:5px 0;padding-left:22px;color:var(--muted)}.legacy-content li+li {margin-top:7px}.legacy-content .takeaway {padding:34px;border:1px solid rgba(245,181,58,.5);border-radius:22px;background:linear-gradient(135deg,rgba(245,181,58,.15),rgba(245,181,58,.03))}.legacy-content .takeaway strong {display:block;color:var(--gold);font-size:25px}.legacy-content .snapshot {font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:18px;margin-top:24px}@media(max-width:780px){.legacy-content .lesson {padding:64px 18px 78px}.legacy-content .section-head {grid-template-columns:1fr;gap:8px}.legacy-content .card, .legacy-content .card.wide {grid-column:1/-1}.legacy-content .pipeline {grid-template-columns:1fr 1fr}.legacy-content .gates {grid-template-columns:1fr}.legacy-content .matrix {grid-template-columns:1fr}.legacy-content .matrix .cell.head:not(:first-child) {display:none}.legacy-content .exercise {grid-template-columns:1fr}.legacy-content .visual {padding:5px}}@media(max-width:460px){.legacy-content .pipeline {grid-template-columns:1fr}}

.legacy-content .lesson {max-width:1100px!important;margin:0 auto!important;padding:56px 28px 40px!important}.legacy-content .lesson>header {position:relative;overflow:hidden;margin-bottom:36px}.legacy-content .lesson>header::after {content:"";position:absolute;right:-70px;top:-70px;width:220px;height:220px;border:1px solid rgba(217,149,22,.22);border-radius:50%;box-shadow:0 0 0 26px rgba(217,149,22,.04),0 0 0 52px rgba(217,149,22,.025)}.legacy-content .eyebrow {margin-bottom:10px;color:var(--accent)!important;font:700 13px/1.4 inherit!important;letter-spacing:1.5px!important;text-transform:uppercase}.legacy-content .lesson h1 {max-width:none!important;margin:0!important;color:var(--text)!important;font-size:32px!important;font-weight:800!important;line-height:1.35!important;letter-spacing:0!important}.legacy-content .lesson h1 span {color:var(--text)!important}.legacy-content .lead {max-width:none!important;margin-top:10px!important;color:var(--sub)!important;font-size:15px!important;line-height:1.7!important}.legacy-content .chips {gap:7px!important;margin-top:16px!important}.legacy-content .tag {padding:4px 9px!important;border:1px solid rgba(217,149,22,.25)!important;border-radius:999px!important;background:#fff8e9!important;color:var(--accent)!important;font:700 10px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace!important;letter-spacing:.02em!important}.legacy-content section {margin-top:0!important}.legacy-content .section-head {display:flex!important;grid-template-columns:none!important;align-items:center!important;gap:10px!important;margin:36px 0 14px!important}.legacy-content .section-head .num {display:none!important}.legacy-content .section-head h2 {margin:0!important;color:var(--sub)!important;font-size:12px!important;font-weight:800!important;line-height:1.4!important;letter-spacing:.8px!important;text-transform:uppercase}.legacy-content .section-head::after {content:"";flex:1;height:1px;background:var(--border)}.legacy-content h3 {margin:0 0 7px!important;color:var(--text)!important;font-size:16px!important;line-height:1.45!important}.legacy-content p, .legacy-content li, .legacy-content ol {color:var(--sub)!important;font-size:13px!important;line-height:1.7!important}.legacy-content .grid {gap:14px!important}.legacy-content .card, .legacy-content .pipe, .legacy-content .gate, .legacy-content .cell, .legacy-content .exercise {padding:17px!important;border:1px solid var(--border)!important;border-radius:12px!important;background:var(--card)!important;box-shadow:var(--shadow-card)!important}.legacy-content .objectives .card {padding-left:17px!important}.legacy-content .objectives .card::before {display:none!important}.legacy-content .label, .legacy-content .card .label {display:block;margin-bottom:7px;color:var(--accent)!important;font:800 11px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace!important;letter-spacing:.06em!important}.legacy-content .pipeline, .legacy-content .gates {gap:14px!important}.legacy-content .pipe b, .legacy-content .gate .index {color:var(--accent)!important}.legacy-content .pipe small {color:var(--sub)!important}.legacy-content .matrix {gap:1px!important;border-color:var(--border)!important;background:var(--border)!important}.legacy-content .matrix .cell {border:0!important;border-radius:0!important}.legacy-content .matrix .cell.head {background:#fff8e9!important;color:var(--accent)!important}.legacy-content .visual {padding:24px!important;border:1px solid #5d4317!important;border-radius:18px!important;background:var(--surface-soft) !important;box-shadow:0 18px 50px rgba(77,50,7,.18)!important}.legacy-content .visual svg {width:100%;height:auto;display:block}.legacy-content code {color:var(--accent)!important;background:rgba(0,0,0,.05)!important;padding:1px 6px!important;border-radius:5px!important}.legacy-content pre, .legacy-content .tree {padding:18px!important;border:1px solid #4d3816!important;border-radius:14px!important;background:var(--surface-soft) !important;color:var(--muted) !important;font-size:12.5px!important}.legacy-content .tree pre {padding:0!important;border:0!important}.legacy-content .tree code, .legacy-content pre code {padding:0!important;background:none!important;color:var(--muted) !important}.legacy-content .path {color:#8b8170!important;font-size:12px!important}.legacy-content .callout {padding:18px 20px!important;border:1px solid rgba(217,149,22,.28)!important;border-radius:14px!important;background:linear-gradient(135deg,var(--amber-soft),rgba(255,255,255,.75))!important}.legacy-content .exercise {grid-template-columns:130px 1fr!important;gap:16px!important;padding:20px!important;border-color:rgba(217,149,22,.3)!important;background:linear-gradient(135deg,#fff8e9,var(--card))!important}.legacy-content .exercise b {color:var(--accent)!important}.legacy-content .exercise ol {margin:0!important;padding-left:20px!important}.legacy-content .takeaway {display:grid!important;grid-template-columns:100px 1fr!important;gap:13px!important;margin-top:22px!important;padding:19px 22px!important;border:0!important;border-radius:14px!important;background:var(--surface-soft) !important}.legacy-content .takeaway strong {color:var(--gold)!important;font-size:14px!important}.legacy-content .takeaway p {margin:0!important;color:var(--muted) !important}.legacy-content .snapshot {margin-top:14px!important;padding:13px 16px!important;border:1px solid var(--border)!important;border-radius:8px!important;background:var(--bg)!important;color:var(--sub)!important;font-size:12px!important}@media(max-width:760px){.legacy-content .lesson {padding:36px 18px 30px!important}.legacy-content .lesson h1 {font-size:24px!important}.legacy-content .lesson>header::after {display:none}.legacy-content .card, .legacy-content .card.wide {grid-column:1/-1!important}.legacy-content .pipeline, .legacy-content .gates, .legacy-content .matrix {grid-template-columns:1fr!important}.legacy-content .exercise, .legacy-content .takeaway {grid-template-columns:1fr!important}.legacy-content .visual {padding:12px!important}}

.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)}