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1fr;gap:16px;display:grid}.book-toc__sub-number{font-family:var(--font-serif);font-variant-numeric:tabular-nums;color:var(--color-muted);padding-top:3px;font-size:12px}.book-toc__sub-body{flex-direction:column;gap:2px;display:flex}.book-toc__sub-title{font-family:var(--font-serif);color:var(--color-ink);font-size:1rem;font-weight:500;line-height:1.3;text-decoration:none;transition:color .15s}.book-toc__sub-title:hover{color:var(--color-accent)}.book-toc__sub-teaser{font-family:var(--font-serif);color:var(--color-muted);margin:0;font-size:.85rem;line-height:1.55}.book-tools{margin:0;padding:0;list-style:none}.book-tools__row{border-top:1px solid var(--color-rule);flex-direction:column;gap:4px;padding:16px 0;display:flex}.book-tools__row:last-child{border-bottom:1px solid var(--color-rule)}.book-tools__title{font-family:var(--font-serif);color:var(--color-ink);font-size:1.125rem;font-weight:500;line-height:1.3;text-decoration:none;transition:color .15s}.book-tools__title:hover{color:var(--color-accent)}.book-tools__blurb{font-family:var(--font-serif);color:var(--color-muted);margin:0;font-size:.9375rem;line-height:1.6}.book-sections{margin:48px 0 0}.book-sections-header{font-family:var(--font-sans);letter-spacing:.3em;text-transform:uppercase;color:var(--color-muted);margin:0 0 20px;font-size:11px;font-weight:600}.book-sections-list{margin:0;padding:0;list-style:none}.book-sections-row{border-top:1px solid var(--color-rule);grid-template-columns:48px 1fr;gap:20px;padding:16px 0;display:grid}.book-sections-row:last-child{border-bottom:1px solid var(--color-rule)}.book-sections-number{font-family:var(--font-serif);font-variant-numeric:tabular-nums;color:var(--color-muted);padding-top:3px;font-size:13px}.book-sections-body{flex-direction:column;gap:4px;display:flex}.book-sections-title{font-family:var(--font-serif);color:var(--color-ink);font-size:1.15rem;font-weight:500;line-height:1.3;text-decoration:none;transition:color .15s}.book-sections-title:hover{color:var(--color-accent)}.book-sections-teaser{font-family:var(--font-serif);color:var(--color-muted);margin:0;font-size:.9rem;line-height:1.6}.book-breadcrumb{font-family:var(--font-sans);letter-spacing:.18em;text-transform:uppercase;color:var(--color-muted);align-items:center;gap:10px;margin:0 0 40px;font-size:11px;display:flex}.book-breadcrumb__link{color:var(--color-muted);text-decoration:none;transition:color .15s}.book-breadcrumb__link:hover{color:var(--color-ink)}.book-subnav{grid-template-columns:1fr auto 1fr;align-items:start;gap:16px;margin:24px 0 0;display:grid}.book-subnav__slot{font-family:var(--font-serif);color:var(--color-muted);font-size:13px;line-height:1.4}.book-subnav__slot--right{text-align:right}.book-subnav__link{color:var(--color-ink);text-decoration:none;transition:color .15s}.book-subnav__link:hover{color:var(--color-accent)}.book-subnav__up{font-family:var(--font-sans);letter-spacing:.18em;text-transform:uppercase;color:var(--color-muted);padding-top:2px;font-size:11px;text-decoration:none;transition:color .15s}.book-subnav__up:hover{color:var(--color-ink)}.book-back{font-family:var(--font-sans);letter-spacing:.12em;text-transform:uppercase;color:var(--color-muted);margin:0 0 48px;font-size:12px;text-decoration:none;display:inline-block}.book-back:hover{color:var(--color-ink)}.book-back--end{margin:32px 0 0}.book-chapter-header{margin:0 0 40px}.book-chapter-number{font-family:var(--font-sans);letter-spacing:.3em;text-transform:uppercase;color:var(--color-muted);margin:0 0 12px;font-size:11px;font-weight:600}.book-chapter-title{font-family:var(--font-serif);letter-spacing:-.01em;color:var(--color-ink);margin:0;font-size:clamp(2rem,4.5vw,3rem);font-weight:600;line-height:1.1}.tool-link{font-family:var(--font-serif);color:var(--color-ink);text-underline-offset:3px;font-style:italic;text-decoration:underline;text-decoration-thickness:1px;transition:color .15s}.tool-link:hover{color:var(--color-accent)}.tool-link--missing{color:var(--color-muted);cursor:not-allowed;text-decoration:line-through}@media (width<=520px){.book-page{padding:40px 20px 64px}.lab-runhead{padding:20px 20px 12px}.book-toc__link{grid-template-columns:40px 1fr;gap:16px}.lab-runhead__wordmark{display:none}.book-title{text-align:center;flex-direction:column;align-items:center;gap:20px}.book-title__mark{width:80px;height:80px}}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-leading{syntax:"*";inherits:false}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-tracking{syntax:"*";inherits:false}@property --tw-duration{syntax:"*";inherits:false}@property --tw-translate-x{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-y{syntax:"*";inherits:false;initial-value:0}@property --tw-translate-z{syntax:"*";inherits:false;initial-value:0}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}