:root{--color-primary: #1857e0;--color-primary-dark: #0f3fae;--color-primary-light: #eaf0fe;--color-accent: #12b886;--color-accent-text: #0a7452;--color-warning-text: #86600a;--color-ink: #12131a;--color-ink-soft: #4a4d5c;--color-border: #e3e6ee;--color-bg: #ffffff;--color-bg-alt: #f6f8fc;--color-danger: #d6395c;--color-warning: #b5810a;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--space-8: 64px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--shadow-sm: 0 1px 2px rgba(18, 19, 26, .06);--shadow-md: 0 4px 16px rgba(18, 19, 26, .08);--shadow-lg: 0 12px 32px rgba(18, 19, 26, .12);--container-max: 1180px}[data-theme=dark]{--color-primary: #5b8cff;--color-primary-dark: #4472e0;--color-primary-light: #1a2440;--color-accent: #2fd9a0;--color-accent-text: #2fd9a0;--color-warning-text: #e0b04a;--color-ink: #f0f1f5;--color-ink-soft: #a7abbb;--color-border: #2b2e3d;--color-bg: #14151d;--color-bg-alt: #1b1d29;--color-danger: #ff6b8b;--color-warning: #e0b04a;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .35);--shadow-lg: 0 12px 32px rgba(0, 0, 0, .45)}:root{--sidebar-w: 240px;--topbar-h: 52px;color-scheme:light}:root[data-theme=dark]{color-scheme:dark}*,*:before,*:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-padding-top:calc(var(--topbar-h) + 16px);-webkit-tap-highlight-color:transparent}body{margin:0;min-width:320px;min-height:100vh;min-height:100dvh;overflow-x:hidden;font-family:var(--font-sans);color:var(--color-ink);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.5;text-rendering:optimizeLegibility}@supports (overflow: clip){body{overflow-x:clip}}body.sidebar-open{overflow:hidden}h1,h2,h3,h4{line-height:1.2;margin:0 0 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14px;border-radius:var(--radius-md);background:var(--color-primary);color:#fff;font-weight:600}.skip-link:focus{top:12px;text-decoration:none}.app-shell{min-height:100vh;min-height:100dvh}.sidebar{position:fixed;top:0;bottom:0;left:0;width:var(--sidebar-w);height:100vh;height:100dvh;display:flex;flex-direction:column;background:var(--color-bg);border-right:1px solid var(--color-border);padding-left:env(safe-area-inset-left);z-index:100;transition:width .18s ease,transform .22s ease,visibility 0s}.sidebar-main{margin-left:var(--sidebar-w);min-width:0;min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;transition:margin-left .18s ease}.main-content{flex:1 0 auto;min-width:0}.sidebar-nav-scroll{flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:var(--space-4);display:flex;flex-direction:column;gap:var(--space-4);scrollbar-width:thin;scrollbar-color:var(--color-border) 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var(--space-2)}html[data-sidebar=collapsed] .sb-head{justify-content:center}html[data-sidebar=collapsed] .sb-link{justify-content:center;padding:10px 0}html[data-sidebar=collapsed] .brand-text{display:none}html[data-sidebar=collapsed] .sb-foot{flex-direction:column;padding:var(--space-3) var(--space-2)}}@media (max-width: 900px){.sidebar-main{margin-left:0}.sidebar{width:min(86vw,300px);transform:translate(-100%);visibility:hidden;transition:transform .22s ease,visibility 0s linear .22s;box-shadow:var(--shadow-lg)}.sidebar.is-open{transform:translate(0);visibility:visible;transition:transform .22s ease,visibility 0s}.sb-close{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;flex-shrink:0;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg);color:var(--color-ink);cursor:pointer}.sb-collapse{display:none}.sidebar-overlay.is-open{display:block;position:fixed;inset:0;z-index:90;background:#00000073}.mobile-topbar{display:flex;align-items:center;gap:10px;position:sticky;top:0;z-index:60;min-height:calc(var(--topbar-h) + env(safe-area-inset-top));padding:env(safe-area-inset-top) max(12px,env(safe-area-inset-right)) 0 max(12px,env(safe-area-inset-left));background:var(--color-bg);border-bottom:1px solid var(--color-border)}.topbar-btn{width:40px;height:40px;flex-shrink:0;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg);color:var(--color-ink);font-size:17px;cursor:pointer}.topbar-brand{font-weight:800;font-size:15px;letter-spacing:-.01em;color:var(--color-ink);line-height:1.2}}.page{padding-top:var(--space-6);padding-bottom:var(--space-8)}.prose-narrow{max-width:820px}.prose-wide{max-width:980px}.breadcrumbs ol{list-style:none;margin:0 0 var(--space-4);padding:0;display:flex;flex-wrap:wrap;gap:4px 6px;font-size:13px}.breadcrumbs li{display:inline-flex;align-items:center;gap:6px;color:var(--color-ink-soft);min-width:0}.breadcrumbs li>span[aria-current]{overflow-wrap:anywhere}.crumb-sep{color:var(--color-border)}.lead{font-size:clamp(1rem,.95rem + .3vw,1.125rem);line-height:1.65;color:var(--color-ink-soft);max-width:70ch}.lead-block{margin-bottom:var(--space-5)}.lead-block .lead{margin-bottom:var(--space-3)}.status-pill{display:inline-block;margin:var(--space-3) 0;padding:6px 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