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140px}.rm-layer{padding-top:96px}.rm-layer-head{display:flex;align-items:center;gap:18px;margin-bottom:60px}.rm-lh-line{flex:1;height:1px;background:var(--linen3)}.rm-lh-label{display:flex;align-items:center;gap:10px;flex-shrink:0}.rm-lh-name{font-family:var(--mono);font-size:.65rem;font-weight:700;text-transform:uppercase;letter-spacing:.18em;color:var(--muted2)}.rm-lh-range{font-family:var(--mono);font-size:.6rem;color:var(--muted2);letter-spacing:.08em}[data-layer=foundation] .rm-lh-name,[data-layer=core] .rm-lh-name{color:var(--sage)}[data-layer=core-llm] .rm-lh-name,[data-layer=structures] .rm-lh-name{color:var(--terra)}[data-layer=production] .rm-lh-name,[data-layer=advanced-oop].rm-lh-name{color:var(--amber)}[data-layer=ship] .rm-lh-name,[data-layer=testing] .rm-lh-name{color:var(--ink3)}[data-layer=scientific] .rm-lh-name{color:var(--sage)}[data-layer=concurrency] 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40px)}.rm-stage-content{flex:1;min-width:0;width:0}.rm-stage-title{font-family:var(--sans);font-size:clamp(1.2rem,2vw,1.55rem);font-weight:800;letter-spacing:-.033em;color:var(--ink);line-height:1.12;margin-bottom:8px}.rm-stage-intro{font-size:.92rem;color:var(--muted2);font-style:italic;line-height:1.65;margin-bottom:24px}.rm-spec{border:1px solid var(--linen3);border-radius:10px;overflow:hidden;margin-bottom:20px}.rm-spec-item{border-bottom:1px solid var(--linen3)}.rm-spec-item:last-child{border-bottom:none}.rm-spec-row{display:grid;grid-template-columns:190px minmax(0,1fr);transition:background .12s}.rm-spec-row--has-detail{grid-template-columns:190px minmax(0,1fr) 40px;cursor:pointer;user-select:none}.rm-spec-row:hover .rm-spec-term{background:var(--linen3)}.rm-spec-row:hover .rm-spec-desc{background:var(--linen2)}.rm-spec-term{padding:11px 14px;font-size:.8rem;font-weight:700;color:var(--ink);background:var(--linen2);border-right:1px solid 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.rm-code-lang,[data-layer=advanced-oop].rm-code-lang{color:var(--amber)}.rm-code-dots{display:flex;gap:5px;align-items:center}.rm-dot{width:10px;height:10px;border-radius:50%}.rm-dot--r{background:#ff5f57}.rm-dot--y{background:#febc2e}.rm-dot--g{background:#28c840}.rm-code-pre{margin:0;padding:20px 24px;background:#111113;overflow-x:auto;font-family:var(--mono);font-size:.78rem;line-height:1.85;color:#c8d0e0}.rm-code-pre code{font-family:inherit;font-size:inherit;color:inherit;background:none;padding:0;border-radius:0;white-space:pre}.rm-pitfalls{display:flex;flex-direction:column;gap:14px}.rm-pitfall{border:1px solid var(--linen3);border-radius:8px;overflow:hidden}.rm-pitfall-head{display:flex;align-items:center;gap:10px;padding:11px 16px;background:var(--linen2);border-bottom:1px solid var(--linen3)}.rm-pit-badge{font-family:var(--mono);font-size:.58rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--amber);background:var(--amber-pale);border:1px solid rgba(184,122,40,.28);padding:2px 7px;border-radius:3px;flex-shrink:0}.rm-pit-issue{font-size:.82rem;font-weight:700;color:var(--ink);line-height:1.3}.rm-pit-context{font-size:.81rem;color:var(--muted);line-height:1.72;padding:11px 16px;margin:0}.rm-pit-fix{display:flex;align-items:flex-start;gap:10px;padding:10px 16px;background:var(--sage-pale);border-top:1px solid rgba(74,107,80,.16)}.rm-pit-fix-badge{font-family:var(--mono);font-size:.58rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--sage);background:#4a6b501f;border:1px solid rgba(74,107,80,.25);padding:2px 7px;border-radius:3px;flex-shrink:0;margin-top:2px}.rm-pit-fix-text{font-size:.81rem;color:var(--ink2);line-height:1.65;font-style:italic}.rm-insight{font-family:var(--display);font-style:italic;font-size:clamp(.92rem,1.1vw,1.04rem);color:var(--muted);line-height:1.7;border-left:2px solid var(--linen3);padding-left:16px;margin:0}[data-layer=foundation] .rm-insight,[data-layer=core] 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.bc-current{color:var(--terra)}.bc-nav--dark .bc-sep{color:#f5f3ef26}.bc-nav--dark .bc-link{color:#f5f3ef47}.bc-nav--dark .bc-link:hover{color:#f5f3efa6}.bc-nav--dark .bc-current{color:#d97355}.sa-section{border-top:1px solid var(--linen3);padding:clamp(36px,5vw,56px) var(--page-pad) clamp(48px,6vw,72px);background:var(--linen2)}.sa-inner{max-width:1200px;margin:0 auto}.sa-eyebrow{font-family:var(--mono);font-size:.6rem;text-transform:uppercase;letter-spacing:.16em;color:var(--terra);display:flex;align-items:center;gap:10px;margin:0 0 20px}.sa-eyebrow:before{content:"";display:block;width:18px;height:1px;background:var(--terra);flex-shrink:0}.sa-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1px;background:var(--linen3);border:1px solid var(--linen3);border-radius:12px;overflow:hidden}.sa-card{display:flex;flex-direction:column;gap:5px;padding:20px 22px;background:var(--linen);text-decoration:none;color:inherit;transition:background .18s}.sa-card:hover{background:var(--linen2)}.sa-card:hover .sa-arrow{opacity:1;transform:translate(3px)}.sa-eye{font-family:var(--mono);font-size:.55rem;text-transform:uppercase;letter-spacing:.1em;color:var(--terra);margin-bottom:2px}.sa-title{font-family:var(--sans);font-size:.9rem;font-weight:700;color:var(--ink);letter-spacing:-.015em;line-height:1.25}.sa-desc{font-size:.77rem;color:var(--muted);line-height:1.65;margin:0;flex:1}.sa-arrow{font-family:var(--mono);font-size:.8rem;color:var(--muted2);margin-top:8px;align-self:flex-end;opacity:0;transition:opacity .15s,transform .15s}