@font-face{font-family:Source Serif;src:url("vendor/katex/fonts/KaTeX_Main-Regular.woff2") format("woff2");font-weight:400;font-display:swap}@font-face{font-family:Source Serif;src:url("vendor/katex/fonts/KaTeX_Main-Bold.woff2") format("woff2");font-weight:700;font-display:swap}@font-face{font-family:EE Mono;src:url("vendor/katex/fonts/KaTeX_Typewriter-Regular.woff2") format("woff2");font-display:swap}
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.callout{margin:2.5rem 0;padding:1.25rem 1.5rem 1.25rem 1.85rem;border:1px solid var(--rule);border-left-width:4px;background:var(--paper-lift);font-size:.96em;line-height:1.65;border-radius:0 4px 4px 0;transition:border-color .2s ease,box-shadow .2s ease}.callout:hover{box-shadow:0 2px 8px rgb(34 32 28/.06)}.callout p:first-child{margin-top:0}.callout p:last-child{margin-bottom:0}.callout::before{display:block;margin:0 0 .65rem;color:var(--accent);font:700 .6rem/1.2 var(--font-sans);letter-spacing:.14em;text-transform:uppercase;content:attr(data-eyebrow)}.callout-def::before{color:var(--store)}.callout-example::before{color:var(--dissipate)}.callout-caution::before{color:var(--warn)}.callout-caution::after{content:"";position:absolute;top:1.25rem;right:1.25rem;width:1.25rem;height:1.25rem;border-radius:2px;background:var(--warn);opacity:.12}.callout-def{border-left-color:var(--store);background:color-mix(in srgb,var(--store) 6%,var(--paper-lift))}.callout-example{border-left-color:var(--dissipate);background:color-mix(in srgb,var(--dissipate) 6%,var(--paper-lift))}.callout-caution{border-left-color:var(--warn);background:color-mix(in srgb,var(--warn) 6%,var(--paper-lift));position:relative}.equation{position:relative;overflow:auto;margin:2.4rem 0;padding:1.55rem 4.5rem 1.55rem 1.5rem;border-block:1px solid var(--rule);background:color-mix(in srgb,var(--paper-deep) 46%,var(--paper));text-align:center;scrollbar-width:thin}.equation-number{position:sticky;right:1rem;top:50%;float:right;margin:0 -3rem 0 2rem;color:var(--accent);font:400 .72rem/1 var(--font-mono);text-decoration:none;background:color-mix(in srgb,var(--paper) 85%,transparent);padding:.45rem .55rem .45rem .4rem;border-left:1px solid var(--rule);align-self:center}.math-inline{display:inline-block;max-width:100%;overflow-x:auto;vertical-align:middle;white-space:nowrap}.table-wrap{overflow:auto;border-top:1px solid var(--ink)}table{width:100%;border-collapse:collapse;font-size:.9em}th,td{padding:.72rem .8rem;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}th{font:700 .74rem/1.3 var(--font-sans);letter-spacing:.04em}.xref{font-weight:600}
.visual{clear:both;margin:3rem 0;padding:1.25rem;border:1px solid var(--rule);background:var(--paper-lift);container-type:inline-size}.widget-root{min-height:10rem}.widget-fallback-svg{display:block;width:100%;height:auto;max-height:22rem;color:var(--ink)}.widget-fallback-svg[hidden]{display:none}figcaption{margin-top:1rem;padding-top:.8rem;border-top:1px solid var(--rule-soft);color:var(--muted);font:500 .76rem/1.45 var(--font-sans)}.fig-num{color:var(--accent);font-weight:700;text-transform:uppercase;letter-spacing:.08em}
.site-footer{margin-left:var(--nav-width);padding:2rem max(1.5rem,calc((100% - 70rem)/2));border-top:1px solid var(--rule);font:500 .73rem/1.4 var(--font-sans)}.chapter-nav{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--rule);max-width:70rem;margin:0 auto}.chapter-nav a{display:flex;flex-direction:column;gap:.45rem;min-height:7.5rem;padding:1.3rem 1.6rem;background:var(--paper);color:var(--ink);text-decoration:none;text-decoration-color:transparent;transition:background .2s ease}.chapter-nav a:hover{background:var(--paper-lift);text-decoration-color:transparent}.chapter-nav a .kicker{display:inline-flex;align-items:center;gap:.5rem;color:var(--accent);font:600 .62rem/1.2 var(--font-sans);text-transform:uppercase;letter-spacing:.14em}.chapter-nav a .kicker span{font-size:.85rem;line-height:1;transition:transform .25s ease}.chapter-nav a:hover .kicker span[aria-hidden="true"]:first-child{transform:translateX(-.18em)}.chapter-nav a.next .kicker span:last-child{transform:translateX(0);display:inline-block}.chapter-nav a:hover.next .kicker span:last-child{transform:translateX(.18em)}.chapter-nav a strong{font:400 1.05rem/1.3 var(--font-serif);letter-spacing:-.015em;color:var(--ink)}.chapter-nav .next{text-align:right;align-items:flex-end}.chapter-nav .is-empty{background:var(--paper);min-height:7.5rem;border:0;outline:0}.footer-colophon{display:flex;align-items:center;justify-content:space-between;gap:1.5rem;max-width:70rem;margin:2rem auto 0;padding-top:1.4rem;border-top:1px solid var(--rule-soft)}.footer-brand{display:inline-flex;align-items:center;gap:.8rem;color:var(--ink);text-decoration:none}.footer-brand .brand-mark{width:2.1rem;height:2.1rem;border-radius:3px;font-size:.68rem;box-shadow:inset 0 1px 0 rgb(255 255 255/.14),0 2px 6px rgb(34 32 28/.22)}.footer-brand strong,.footer-brand small{display:block}.footer-brand strong{font:400 1rem/1 var(--font-serif);font-style:italic;letter-spacing:.015em;color:var(--ink)}.footer-brand small{margin-top:.2rem;color:var(--muted);font:700 .52rem/1 var(--font-sans);text-transform:uppercase;letter-spacing:.16em}.footer-links{display:flex;align-items:center;gap:1.5rem}.footer-links a{display:inline-flex;align-items:baseline;gap:.3rem;color:var(--muted);text-decoration:none;text-transform:uppercase;letter-spacing:.13em;font-weight:700;font-size:.64rem;transition:color .18s ease}.footer-links a span{font-size:.8rem;transition:transform .22s ease}.footer-links a:hover{color:var(--accent-deep)}.footer-links a:hover span{transform:translateY(-.16em)}.about-page .site-footer{margin-left:0}.book-end{display:flex;justify-content:space-between;gap:1rem;padding:3.5rem max(2rem,calc((100% - 70rem)/2));border-top:2px solid var(--accent);background:var(--ink);color:var(--paper);font:600 .75rem/1.4 var(--font-sans);text-transform:uppercase;letter-spacing:.1em}.book-end p{margin:0;color:var(--paper);letter-spacing:.14em}.book-end-dot{color:var(--accent);margin:0 .9rem}.book-end-links{display:flex;align-items:center;gap:1.5rem}.book-end-links a{color:var(--paper);text-decoration:none;text-decoration-color:transparent}.book-end-links a span{display:inline-block;transition:transform .25s ease}.book-end-links a:hover{text-decoration-color:var(--paper);text-decoration-thickness:1px;text-underline-offset:.3em}.book-end-links a:hover span{transform:translateY(-.18em)}
.chapter-palette{width:min(43rem,calc(100% - 2rem));max-height:min(42rem,calc(100% - 2rem));padding:0;border:1px solid var(--ink);border-radius:4px;background:var(--paper-lift);color:var(--ink);box-shadow:0 1.8rem 6rem rgb(34 32 28/.22)}.chapter-palette[open]{animation:palette-in .16s ease-out}@keyframes palette-in{from{opacity:0;transform:translateY(-6px) scale(.985)}to{opacity:1;transform:none}}.chapter-palette::backdrop{background:rgb(34 32 28/.56);animation:backdrop-in .2s ease-out}@keyframes backdrop-in{from{opacity:0}to{opacity:1}}.palette-head{display:flex;align-items:end;gap:.8rem;padding:1.2rem;border-bottom:1px solid var(--rule)}.palette-head label{flex:1;color:var(--accent);font:700 .68rem/1.3 var(--font-sans);letter-spacing:.1em;text-transform:uppercase}.palette-head input{display:block;width:100%;margin-top:.55rem;padding:.65rem 0;border:0;border-bottom:1px solid var(--rule);border-radius:0;background:transparent;color:var(--ink);font:400 1.2rem/1.3 var(--font-serif);outline:0;transition:border-color .18s ease}.palette-head input:focus{border-bottom-color:var(--accent)}.palette-head input::placeholder{color:var(--muted)}.palette-close{padding:.5rem .65rem;border:1px solid var(--rule);background:transparent;color:var(--ink);font:600 .68rem/1 var(--font-sans);text-transform:uppercase}.palette-close:hover{border-color:var(--accent);color:var(--accent-deep)}.chapter-palette>ol{margin:0;padding:.5rem;list-style:none;max-height:min(30rem,60vh);overflow:auto;scrollbar-width:thin;scrollbar-color:var(--rule) transparent}.chapter-palette li{margin:0}.chapter-palette li>a{display:flex;flex-direction:column;gap:.25rem;padding:.7rem .8rem;color:var(--ink);text-decoration:none;border-radius:3px}.chapter-palette li>a:hover{background:var(--paper-deep)}.chapter-palette li>a>span{color:var(--muted);font:500 .62rem/1.3 var(--font-sans);letter-spacing:.08em;text-transform:uppercase}.chapter-palette li>a>strong{font:500 1.02rem/1.3 var(--font-serif)}.chapter-palette li>a .palette-snippet{color:var(--ink-soft);font:400 .8rem/1.5 var(--font-serif);text-transform:none;letter-spacing:0}.chapter-palette mark{background:transparent;color:var(--accent-deep);font-weight:700}.chapter-palette a[aria-current=true]{background:var(--paper-deep);box-shadow:inset 2px 0 var(--accent)}.palette-empty{color:var(--muted);font:400 .9rem/1.4 var(--font-serif);padding:.9rem 1rem}.palette-hint{display:flex;justify-content:space-between;gap:1rem;margin:0;padding:.75rem 1.2rem;border-top:1px solid var(--rule);color:var(--muted);font:500 .63rem/1.2 var(--font-sans)}
.about-shell{min-height:calc(100vh - var(--header-height))}.about-shell .chapter{max-width:var(--measure)}
@media (max-width:92rem){.chapter-outline{float:none;width:auto;margin:0 0 3rem;padding:1rem 0 1rem 0;border-left:0;border-top:2px solid var(--rule);border-bottom:1px solid var(--rule-soft)}.chapter-outline ol{columns:2;column-gap:2rem}.chapter-outline li{break-inside:avoid}}
@media (max-width:75rem){:root{--header-height:4rem}.book-nav{position:fixed;inset:var(--header-height) 0 auto;width:auto;max-height:calc(100vh - var(--header-height));border-right:0;border-bottom:1px solid rgba(0,0,0,.08)}.book-nav:not([open]){width:9rem;inset:var(--header-height) 0 auto auto;border-left:1px solid rgba(0,0,0,.08)}.book-nav nav{max-height:calc(100vh - 7rem);overflow:auto}.book-shell,.chapter-shell,.about-shell,.site-footer{margin-left:0}.book-cover{padding-top:7rem}.book-part{scroll-margin-top:7rem}.book-chapter{scroll-margin-top:7rem}.chapter-page .chapter-shell{padding-top:7rem}.site-header{padding-right:13rem}.header-actions{margin-left:auto}}
@media (max-width:46rem){body{font-size:1rem}.site-header{padding-right:7.5rem}.brand small,.about-link,.palette-button span,.palette-button kbd{display:none}.palette-button{width:2.2rem;height:2.2rem;justify-content:center;gap:0;padding:0}.palette-button::before{font-size:1.05rem}.book-nav:not([open]){width:6rem}.book-nav summary{padding:.75rem 1rem}.book-nav summary>span:first-child{display:none}.book-cover{grid-template-columns:3rem 1fr;gap:1.2rem;padding:6.5rem 1.25rem 4rem}.cover-code{padding-left:.55rem}.cover-trace{display:none}.book-cover h1{font-size:clamp(2.7rem,13vw,4.5rem)}.cover-copy dl{display:grid;grid-template-columns:1fr}.part-opener{min-height:42vh;padding:6rem 1.25rem 3rem}.part-opener span{font-size:5rem}.book-chapter,.chapter{width:min(var(--measure),calc(100% - 2.25rem))}.book-chapter{padding-block:5rem}.chapter-folio{font-size:5rem}.chapter-title,.chapter h1{font-size:2.65rem}.chapter-outline ol{columns:1}.equation{margin-inline:-.5rem;padding:1.25rem 3.5rem 1.25rem .75rem}.visual{margin-inline:-.5rem;padding:.8rem}.chapter-nav{grid-template-columns:1fr}.chapter-nav .next{text-align:left}.footer-colophon{flex-direction:column;align-items:flex-start;gap:1.2rem}.book-end{flex-direction:column;padding:3rem 1.25rem}.palette-head{align-items:stretch;flex-direction:column}.palette-close{align-self:flex-end}}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}
@media (forced-colors:active){*{forced-color-adjust:auto}}

/* ═══════════════════════════════════════════════════════════
   ENHANCED@media print {
  body {
    background: white !important;
    color: black !important;
  }

  .site-header, .book-nav, .theme-toggle, .palette-button {
    display: none !important;
  }

  .main-content {
    margin-left: 0 !important;
  }

  .chapter {
    page-break-inside: avoid;
  }

  .equation {
    break-inside: avoid;
  }

  figure, table, blockquote {
    break-inside: avoid;
  }

  .callout {
    border-left-width: 4px !important;
  }
}


@media print{.site-header,.book-nav,.chapter-outline,.chapter-palette{display:none!important}.book-shell,.chapter-shell,.site-footer{margin-left:0}.book-part{break-before:page}.book-chapter{break-before:page}.visual,.equation{break-inside:avoid

}

}

.dark-mode:root{--ink:#e8e4db;--ink-soft:#bfb9ad;--paper:#1a1814;--paper-deep:#13110e;--paper-lift:#22201c;--rule:#3d3932;--rule-soft:#2e2b25;--muted:#716b62;--accent:#d4634d;--accent-deep:#e8846b;--link:#7db4d4;--store:#5cb89a;--dissipate:#d4785e;--warn:#d4a84d;--phase:#9ca3ac}.dark-mode body{background:var(--paper);color:var(--ink)}.dark-mode h1,.dark-mode h2,.dark-mode h3,.dark-mode h4,.dark-mode p,.dark-mode li{color:var(--ink-soft)}.dark-mode h1,.dark-mode h2{color:var(--ink)}.dark-mode a{color:var(--link);text-decoration-color:color-mix(in srgb,var(--link) 55%,transparent)}.dark-mode a:hover{color:var(--ink);text-decoration-color:var(--accent)}.dark-mode hr{background:var(--rule)}.dark-code-markdown-table th,.dark-code-markdown-table td{border-bottom-color:var(--rule)}.dark-mode code{color:var(--accent)}.dark-mode pre{background:var(--paper-deep);border-left-color:var(--accent)}.dark-mode figcaption{border-top-color:var(--rule-soft);color:var(--muted)}.dark-mode .skip-link{background:var(--ink);color:var(--paper)}.dark-mode .skip-link:focus{background:var(--paper);color:var(--ink)}.dark-mode .site-header{box-shadow:0 .5rem 1.1rem -.95rem rgb(0 0 0/.6);background:linear-gradient(to bottom,#22201c,color-mix(in srgb,var(--paper-deep) 40%,var(--paper)))}.dark-mode .site-header::before{background:linear-gradient(90deg,var(--accent) 0,var(--accent-deep) 38%,color-mix(in srgb,var(--accent) 22%,transparent) 78%,transparent)}.dark-mode .brand strong{color:var(--ink)}.dark-mode .brand small{color:var(--muted)}.dark-mode .brand-mark{background:linear-gradient(140deg,#2a2822,var(--ink) 60%,#1a1713);box-shadow:inset 0 1px 0 rgba(255 255 255/.06),0 3px 9px rgba(0 0 0/.5)}.dark-mode .brand-mark::after{background:linear-gradient(90deg,var(--accent) 0 58%,transparent)}.dark-mode .palette-button{border-color:var(--rule);background:linear-gradient(to bottom,var(--paper-lift),var(--paper));color:var(--ink-soft);box-shadow:0 1px 2px rgba(0 0 0/.2)}.dark-mode .palette-button kbd{border-color:var(--rule-soft);background:var(--paper-deep);color:var(--muted)}.dark-mode .palette-button:hover{border-color:color-mix(in srgb,var(--accent) 55%,var(--rule));color:var(--accent-deep)}.dark-mode .about-link{color:var(--ink-soft)}.dark-mode .about-link::after{background:var(--accent)}.dark-mode .about-link:hover{color:var(--ink)}.dark-mode .theme-toggle{border-color:var(--rule);background:linear-gradient(to bottom,var(--paper-lift),var(--paper));color:var(--ink-soft);box-shadow:0 1px 2px rgba(0 0 0/.2)}.dark-mode .theme-toggle:hover{border-color:rgba(255,255,255,.15);color:var(--accent-deep)}.dark-mode .reading-meter{background:linear-gradient(90deg,transparent,var(--rule-soft) 5%,var(--rule-soft) 95%,transparent)}.dark-mode .reading-meter::-webkit-progress-value{background:linear-gradient(90deg,var(--accent),var(--accent-deep))}.dark-mode .reading-meter::-moz-progress-bar{background:linear-gradient(90deg,var(--accent),var(--accent-deep))}.dark-mode .book-nav{background:var(--paper-deep);border-right-color:rgba(255,255,255,.06)}.dark-mode .book-nav::before{background:linear-gradient(to bottom,var(--accent) 0%,var(--accent-deep) 100%);opacity:.8}.dark-mode .book-nav summary{border-bottom-color:rgba(255,255,255,.08);background:linear-gradient(to bottom,#1e1c17,#1a1814)}.dark-mode .book-nav summary::after{background:linear-gradient(to right,var(--rule),transparent);opacity:.25}.dark-mode .book-nav summary [data-current-label]{background:rgba(212,99,77,.12)}.dark-mode .book-nav .summary-lead{color:var(--ink)}.dark-mode .nav-part{border-bottom-color:rgba(255,255,255,.04)}.dark-mode .nav-part-link{color:var(--ink-soft)}.dark-mode .nav-part-link span{background:rgba(212,99,77,.08);color:var(--accent-deep)}.dark-mode .nav-part-link em{color:var(--ink-soft)}.dark-mode .nav-part-link .part-count{background:rgba(255,255,255,.03);color:var(--muted)}.dark-mode .nav-part-link:hover{background:rgba(255,255,255,.02)}.dark-mode .nav-part-link:hover em{color:var(--ink)}.dark-mode .nav-part.is-current .nav-part-link{background:rgba(212,99,77,.06);box-shadow:inset 3px 0 0 var(--accent)}.dark-mode .nav-part.is-current .nav-part-link em{color:var(--ink);font-weight:600}.dark-mode .nav-part.is-current .nav-part-link span{background:rgba(212,99,77,.15);opacity:1}.dark-mode .nav-part>ol{border-top:2px solid rgba(212,99,77,.2);margin-top:.5rem}.dark-mode .chapter-link{color:var(--muted)}.dark-mode .chapter-link span{background:rgba(255,255,255,.03);color:var(--muted)}.dark-mode .chapter-link:hover{color:var(--ink);background:rgba(255,255,255,.015)}.dark-mode .chapter-link.is-current{color:var(--ink);background:rgba(212,99,77,.06);box-shadow:inset 0 0 0 1px rgba(212,99,77,.15),0 1px 3px rgba(0 0 0,.3)}.dark-mode .chapter-link.is-current::before{background:var(--accent);box-shadow:0 0 4px var(--accent)}.dark-mode .chapter-link.is-current span{color:var(--accent);background:rgba(212,99,77,.12)}.dark-mode .chapter-link.is-read span::after{color:var(--store)}.dark-mode .cover-code svg text{fill:var(--muted)}.dark-mode .cover-copy dl{background:rgba(255,255,255,.06)}.dark-mode .cover-copy dl div{background:var(--paper-deep)}.dark-mode .cover-copy dt{color:var(--muted)}.dark-mode .start-reading{color:var(--ink)}.dark-mode .start-reading:hover{color:var(--ink)}.dark-mode .start-reading span{color:var(--accent)}.dark-mode .book-cover{border-bottom-color:rgba(255,255,255,.06);background:var(--paper)}.dark-mode .book-chapter{border-bottom-color:rgba(255,255,255,.04)}.dark-mode .chapter-header{border-bottom-color:var(--ink)}.dark-mode .equation{border-block:1px solid var(--rule);background:color-mix(in srgb,var(--paper-deep) 46%,var(--paper))}.dark-mode .equation-number{background:color-mix(in srgb,var(--paper) 85%,transparent);border-left-color:var(--rule)}.dark-mode .table-wrap{border-top-color:var(--ink)}.dark-mode table th{background:color-mix(in srgb,var(--paper-deep) 60%,var(--paper))}.dark-mode table th,.dark-mode table td{border-bottom-color:var(--rule)}.dark-mode .visual{border-color:var(--rule);background:var(--paper-lift)}.dark-mode .fig-num{color:var(--accent)}.dark-mode .callout{border-color:var(--rule);border-left-width:4px;background:var(--paper-lift)}.dark-mode .callout:hover{box-shadow:0 2px 8px rgba(0 0 0,.3)}.dark-mode .callout::before{color:var(--accent)}.dark-mode .callout-def{border-left-color:var(--store);background:color-mix(in srgb,var(--store) 6%,var(--paper-lift))}.dark-mode .callout-example{border-left-color:var(--dissipate);background:color-mix(in srgb,var(--dissipate) 6%,var(--paper-lift))}.dark-mode .callout-caution{border-left-color:var(--warn);background:color-mix(in srgb,var(--warn) 6%,var(--paper-lift))}.dark-mode .callout-caution::after{background:var(--warn)}.dark-mode .site-footer{border-top-color:var(--rule)}.dark-mode .chapter-nav{background:var(--rule)}.dark-mode .chapter-nav a{background:var(--paper);color:var(--ink)}.dark-mode .chapter-nav a:hover{background:var(--paper-lift)}.dark-mode .chapter-nav a .kicker{color:var(--accent)}.dark-mode .chapter-nav a strong{color:var(--ink)}.dark-mode .chapter-nav .is-empty{background:var(--paper)}.dark-mode .footer-colophon{border-top-color:var(--rule-soft)}.dark-mode .footer-brand{color:var(--ink)}.dark-mode .footer-brand .brand-mark{box-shadow:inset 0 1px 0 rgba(255 255 255/.06),0 2px 6px rgba(0 0 0,.3)}.dark-mode .footer-brand strong{color:var(--ink)}.dark-mode .footer-brand small{color:var(--muted)}.dark-mode .footer-links a{color:var(--muted)}.dark-mode .footer-links a:hover{color:var(--accent-deep)}.dark-mode .book-end{border-top-color:var(--accent);background:var(--ink);color:var(--paper)}.dark-mode .book-end p{color:var(--paper)}.dark-mode .book-end-dot{color:var(--accent)}.dark-mode .book-end-links a{color:var(--paper)}.dark-mode .book-end-links a:hover{text-decoration-color:var(--paper)}.dark-mode .chapter-palette{border-color:rgba(255,255,255,.15);background:var(--paper-lift);color:var(--ink);box-shadow:0 1.8rem 6rem rgba(0 0 0,.5)}.dark-mode .palette-head{border-bottom-color:var(--rule)}.dark-mode .palette-head label{color:var(--accent)}.dark-mode .palette-head input{border-bottom-color:var(--rule);color:var(--ink)}.dark-mode .palette-head input:focus{border-bottom-color:var(--accent)}.dark-mode .palette-close{border-color:var(--rule);color:var(--ink)}.dark-mode .palette-close:hover{border-color:var(--accent);color:var(--accent-deep)}.dark-mode .chapter-palette>ol{max-height:min(30rem,60vh);overflow:auto}.dark-mode .chapter-palette li>a{color:var(--ink)}.dark-mode .chapter-palette li>a:hover{background:var(--paper-deep)}.dark-mode .chapter-palette li>a>span{color:var(--muted)}.dark-mode .chapter-palette mark{color:var(--accent-deep)}.dark-mode .palette-empty{color:var(--muted)}.dark-mode .palette-hint{border-top-color:var(--rule);color:var(--muted)}.dark-mode .book-part{border-bottom-color:rgba(255,255,255,.06)}.dark-mode .part-opener{border-bottom-color:rgba(255,255,255,.06);background:var(--paper-deep)}.dark-mode .part-opener p{color:var(--accent)}.dark-mode .part-opener span{color:color-mix(in srgb,var(--accent) 20%,var(--paper-deep))}.dark-mode .part-opener h2{color:var(--ink)}.dark-mode .edition-label{color:var(--accent)}.dark-mode .part-label{color:var(--accent)}.dark-mode .outline-meta{color:var(--muted)}.dark-mode .outline-progress{background:var(--rule-soft)}.dark-mode .outline-progress span{background:linear-gradient(90deg,var(--accent),var(--accent-deep))}
/* Shared polish: theme state and compact-screen contents. */
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/* Technical field guide: shared reading instrumentation. */
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