:root{--bg:#f6f1e8;--bg-deep:#ebe4d6;--ink:#1a1f24;--muted:#5a6570;--line:rgba(26,31,36,.12);--accent:#0b5fff;--accent-soft:#dce8ff;--surface:#fffcf7;--font-display:"IBM Plex Serif","Times New Roman",serif;--font-body:"IBM Plex Sans","Avenir Next",system-ui,sans-serif;--font-mono:"IBM Plex Mono",ui-monospace,monospace}*{box-sizing:border-box}body,html{margin:0;min-height:100%;color:var(--ink);font-family:var(--font-body);background:linear-gradient(180deg,var(--bg) 0,var(--bg-deep) 100%);background-attachment:fixed}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:3px}.shell{width:min(1080px,calc(100% - 2rem));margin:0 auto;padding:2.5rem 0 4rem}.brand{font-family:var(--font-display);font-size:clamp(2.4rem,6vw,3.4rem);line-height:1;margin:0 0 .6rem;letter-spacing:-.02em}.lede{margin:0 0 1.75rem;max-width:54ch;color:var(--muted);font-size:1.05rem;line-height:1.55}.nav-row{display:flex;flex-wrap:wrap;gap:.75rem 1.25rem;margin-bottom:1.75rem;font-size:.95rem}.table-wrap{overflow-x:auto;border:1px solid var(--line);background:var(--surface)}table.catalog{width:100%;border-collapse:collapse;font-size:.95rem}table.catalog td,table.catalog th{text-align:left;padding:.75rem .9rem;border-bottom:1px solid var(--line);vertical-align:top}table.catalog th{font-weight:600;background:rgba(11,95,255,.06)}table.catalog tr:last-child td{border-bottom:none}.muted{color:var(--muted)}.count{font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.search{width:100%;max-width:28rem;margin-bottom:1rem;padding:.7rem .85rem;border:1px solid var(--line);background:var(--surface);font:inherit}.notebook{display:grid;grid-template-columns:220px 1fr;grid-gap:1.5rem;gap:1.5rem;align-items:start}@media (max-width:860px){.notebook{grid-template-columns:1fr}.toc{position:static!important}}.toc{position:-webkit-sticky;position:sticky;top:1rem;border:1px solid var(--line);background:var(--surface);padding:.9rem 1rem;font-size:.86rem;max-height:calc(100vh - 2rem);overflow:auto}.toc h2{margin:0 0 .6rem;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);font-weight:600;font-family:var(--font-body)}.toc ol{margin:0;padding-left:1.1rem;line-height:1.55}.article{border:1px solid var(--line);background:var(--surface);padding:1.4rem 1.5rem 2rem;min-width:0}.article h1{font-size:1.85rem;margin:0 0 1rem;line-height:1.2}.article h1,.article h2{font-family:var(--font-display)}.article h2{font-size:1.35rem;margin:1.75rem 0 .65rem;scroll-margin-top:1rem}.article h3{font-size:1.05rem;margin:1.2rem 0 .45rem}.article li,.article p{line-height:1.6;color:var(--ink)}.article table{width:100%;border-collapse:collapse;margin:.75rem 0 1rem;font-size:.92rem}.article td,.article th{border:1px solid var(--line);padding:.5rem .65rem;text-align:left;vertical-align:top}.article pre{overflow-x:auto;padding:.9rem 1rem;background:#f0f3f7;border:1px solid var(--line);font-size:.84rem;line-height:1.45}.article code,.article pre{font-family:var(--font-mono)}.article code{font-size:.9em}.article :not(pre)>code{background:#eef2f7;padding:.1rem .3rem}.mermaid-diagram{margin:1rem 0 1.25rem;padding:1rem;overflow-x:auto;border:1px solid var(--line);background:#fffcf7}.mermaid-diagram svg{display:block;max-width:100%;height:auto;margin:0 auto}.mermaid-loading{margin:1rem 0;font-style:italic}.mermaid-fallback pre{margin-top:.5rem}.pager{display:flex;justify-content:space-between;gap:1rem;margin-top:1.5rem;flex-wrap:wrap}.crumb{font-size:.9rem;color:var(--muted);margin-bottom:.75rem}.filters{display:flex;flex-wrap:wrap;gap:.45rem;margin-bottom:1rem}.chip{border:1px solid var(--line);background:transparent;padding:.35rem .65rem;cursor:pointer;font:inherit;color:var(--muted)}.chip[data-active=true]{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}