.dark,:root{--term-bg:#0B0E14;--card-bg:#12161F;--card-border:#1E2636;--sidebar-bg:#080A0F;--text:#E2E8F0;--muted:#94A3B8;--prose:#CBD5E1;--header-glass:rgba(18, 22, 31, 0.92);--callout-bg:rgba(34, 211, 238, 0.06)}html.light{--term-bg:#F7F5F0;--card-bg:#FFFFFF;--card-border:#E2DDD4;--sidebar-bg:#EFEBE3;--text:#1A1A1A;--muted:#5C6570;--prose:#2C333A;--header-glass:rgba(247, 245, 240, 0.94);--callout-bg:rgba(14, 116, 144, 0.06)}body{font-family:'IBM Plex Sans',sans-serif;background:var(--term-bg);color:var(--text)}.prose-book{font-family:'Source Serif 4',Georgia,serif;color:var(--prose);font-size:1.05rem;line-height:1.75}.prose-book p+p{margin-top:1em}.prose-book strong{color:var(--text);font-weight:600}.font-mono,code{font-family:'IBM Plex Mono',monospace}.scroll-custom::-webkit-scrollbar{width:6px}.scroll-custom::-webkit-scrollbar-thumb{background:var(--card-border);border-radius:3px}.nav-item-active{background:rgba(34,211,238,.08);border-left:3px solid 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