:root{--bg:#f9f8f4;--paper:#fff;--fg:#20323b;--muted:#596d74;--line:#d9e2df;--accent:#126a5b;--code:#eef2ef;--bar:#102c38;color-scheme:light}
:root[data-theme=dark]{--bg:#101b22;--paper:#15252e;--fg:#dfebe8;--muted:#a1b7b6;--line:#334a51;--accent:#74d3b7;--code:#20343d;--bar:#0b171e;color-scheme:dark}
*{box-sizing:border-box}html{scroll-padding-top:90px}body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.9 system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif}a{color:var(--accent);text-underline-offset:3px}button,input{font:inherit}button{cursor:pointer}.topbar{height:64px;background:var(--bar);color:white;display:flex;justify-content:space-between;align-items:center;padding:0 4vw;position:sticky;top:0;z-index:10}.topbar a{color:#d6efea;text-decoration:none}.brand{font-weight:750;letter-spacing:.05em}.topbar nav{display:flex;gap:20px;align-items:center;font-size:14px}.topbar button{border:1px solid #587780;border-radius:5px;color:#e5f2ef;background:transparent;padding:3px 10px}#menu{display:none}.layout{max-width:1450px;margin:auto;display:grid;grid-template-columns:290px minmax(0,1fr)}aside{padding:32px 24px;position:sticky;top:64px;height:calc(100vh - 64px);overflow:auto;font-size:13px;border-right:1px solid var(--line)}aside ul{list-style:none;padding-left:0}aside ul ul{padding-left:14px;font-size:12px}aside li{margin:7px 0}aside a{text-decoration:none;color:var(--muted)}aside a:hover{color:var(--accent)}aside input{width:100%;background:var(--paper);color:var(--fg);border:1px solid var(--line);border-radius:7px;padding:8px;margin-top:7px}#search-status{color:var(--muted);font-size:12px;margin:7px 0}#search-results{max-height:300px;overflow:auto}#search-results a{color:var(--accent)}main{max-width:100%;padding:36px clamp(24px,5vw,80px) 70px;min-width:0}main>section,main>h1,main>h2,main>p,main>ul,main>ol,main>pre,main>table,main>div{max-width:850px;margin-left:auto;margin-right:auto}.hero{padding:35px 0 60px;border-bottom:1px solid var(--line);margin-bottom:60px}.eyebrow{font-size:13px;letter-spacing:.15em;color:var(--accent)}.book-title{font-size:clamp(44px,8vw,88px);line-height:1.2;margin:24px 0 12px;border:0;padding:0;letter-spacing:-.04em}.subtitle{font-size:clamp(23px,3vw,34px);font-weight:650;line-height:1.5;margin:12px 0}.meta{color:var(--muted);font-size:14px}.download{display:inline-block;background:var(--accent);color:var(--paper);padding:9px 20px;border-radius:6px;text-decoration:none;margin:15px 16px 0 0}#resume{font-size:14px}h1{font-size:30px;margin-top:80px;padding-top:25px;border-top:1px solid var(--line);line-height:1.5}h2{font-size:23px;margin-top:36px;line-height:1.6}p{margin:1em 0}pre{font-size:13px;line-height:1.7;background:var(--code);padding:18px;border:1px solid var(--line);border-radius:8px;overflow:auto}code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}p code,li code,td code{background:var(--code);padding:2px 4px;border-radius:3px;overflow-wrap:anywhere}table{border-collapse:collapse;display:block;overflow-x:auto;font-size:14px;margin-top:24px;margin-bottom:24px}th,td{border:1px solid var(--line);padding:10px 14px;text-align:left;min-width:100px}th{background:var(--code)}footer{margin-top:80px;border-top:1px solid var(--line);padding-top:25px;color:var(--muted);font-size:13px}.backtop{position:fixed;right:24px;bottom:24px;background:var(--paper);padding:6px 17px;border:1px solid var(--line);border-radius:8px;text-decoration:none}.skip{position:fixed;top:-100px;background:var(--paper);z-index:30}.skip:focus{top:0}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
@media(max-width:900px){.layout{display:block}#menu{display:inline-block}aside{display:none;position:fixed;top:64px;left:0;z-index:12;width:min(340px,90vw);background:var(--paper);box-shadow:10px 0 30px #0003}aside.open{display:block}main{padding:20px 22px 60px}.topbar{padding:0 18px}.topbar nav{gap:12px;font-size:12px}.brand{font-size:14px}h1{font-size:26px}.hero{padding-top:20px}.backtop{right:12px;bottom:12px}body{font-size:16px}}
@media print{.topbar,aside,.backtop,.download,#resume{display:none}.layout{display:block}body{background:white;color:black;font-size:11pt}main{padding:0}.hero{break-after:page}h1{break-before:page}pre{white-space:pre-wrap}a{color:inherit}}

/* BEGIN AIAS SHARED READER */
/* Aias Reader 1.0 — vendored into each book; no remote assets required. */
@media screen {
  :root {
    --reader-page: #f7f7f3 !important;
    --reader-surface: #fffefa !important;
    --reader-text: #292e34 !important;
    --reader-muted: #626b74 !important;
    --reader-line: #dedfd9 !important;
    --reader-accent: #28685c !important;
    --reader-soft: #eaf0eb !important;
    --reader-code: #eff0ec !important;
    --reader-keyword: #73579d !important;
    --reader-string: #28685c !important;
    --reader-number: #955028 !important;
    color-scheme: light !important;
  }
  :root[data-theme="dark"], body.dark, body[data-md-color-scheme="slate"] {
    --reader-page: #1c1f24 !important;
    --reader-surface: #22262c !important;
    --reader-text: #d7dce2 !important;
    --reader-muted: #a0a8b3 !important;
    --reader-line: #3b414a !important;
    --reader-accent: #91c5b5 !important;
    --reader-soft: #2b3835 !important;
    --reader-code: #282d34 !important;
    --reader-keyword: #c6afe8 !important;
    --reader-string: #a4c6a0 !important;
    --reader-number: #dfb385 !important;
    color-scheme: dark !important;
  }
  /* Adapt the existing readers without changing their content or navigation. */
  :root, body {
    --bg: var(--reader-page) !important;
    --page-bg: var(--reader-page) !important;
    --paper: var(--reader-surface) !important;
    --surface: var(--reader-surface) !important;
    --panel: var(--reader-surface) !important;
    --surface-muted: var(--reader-code) !important;
    --ink: var(--reader-text) !important;
    --fg: var(--reader-text) !important;
    --text: var(--reader-text) !important;
    --heading: var(--reader-text) !important;
    --muted: var(--reader-muted) !important;
    --line: var(--reader-line) !important;
    --accent: var(--reader-accent) !important;
    --accent-hover: var(--reader-accent) !important;
    --accent-soft: var(--reader-soft) !important;
    --code: var(--reader-code) !important;
    --code-bg: var(--reader-code) !important;
    --focus: var(--reader-accent) !important;
    --header-bg: var(--reader-page) !important;
    --md-default-bg-color: var(--reader-page) !important;
    --md-default-fg-color: var(--reader-text) !important;
    --md-default-fg-color--light: var(--reader-muted) !important;
    --md-default-fg-color--lighter: var(--reader-line) !important;
    --md-primary-fg-color: var(--reader-surface) !important;
    --md-primary-bg-color: var(--reader-text) !important;
    --md-accent-fg-color: var(--reader-accent) !important;
    --md-typeset-color: var(--reader-text) !important;
    --md-typeset-a-color: var(--reader-accent) !important;
    --md-code-bg-color: var(--reader-code) !important;
    --md-code-fg-color: var(--reader-text) !important;
    --md-code-hl-comment-color: var(--reader-muted) !important;
    --md-code-hl-keyword-color: var(--reader-keyword) !important;
    --md-code-hl-string-color: var(--reader-string) !important;
    --md-code-hl-number-color: var(--reader-number) !important;
  }
  html { -webkit-text-size-adjust: 100%; scrollbar-color: var(--reader-line) var(--reader-page); }
  body {
    background: var(--reader-page) !important;
    color: var(--reader-text) !important;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif !important;
    -webkit-font-smoothing: antialiased;
  }
  ::selection { background: var(--reader-accent); color: var(--reader-page); }
  :focus-visible { outline: 2px solid var(--reader-accent); outline-offset: 4px; }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) {
    font-family: inherit;
    font-size: var(--reader-size, var(--body-size, var(--reading-size, var(--size, 18px)))) !important;
    line-height: 1.95;
    overflow-wrap: break-word;
  }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) :is(h1, h2, h3, h4) {
    color: var(--reader-text) !important;
    font-family: inherit;
    line-height: 1.5;
    font-weight: 650;
  }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) p { text-align: start; }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) a {
    color: var(--reader-accent) !important;
    text-decoration-color: var(--reader-accent);
    text-underline-offset: .2em;
    overflow-wrap: anywhere;
  }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) pre {
    background: var(--reader-code) !important;
    color: var(--reader-text) !important;
    border: 1px solid var(--reader-line) !important;
    border-radius: 8px;
    max-width: 100%;
    overflow-x: auto;
    white-space: pre;
    overflow-wrap: normal;
    line-height: 1.75;
    tab-size: 4;
    scrollbar-width: thin;
  }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) code {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-variant-ligatures: none;
  }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) :not(pre) > code {
    background: var(--reader-code) !important;
    color: var(--reader-text) !important;
    border-radius: 4px;
    padding: .12em .3em;
  }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) pre code {
    background: transparent !important;
    color: inherit !important;
    padding: 0;
    white-space: pre;
    overflow-wrap: normal;
  }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) pre code span { color: inherit !important; }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) pre code :is(.kw, .cf, .dt, .bu, .fu, .k, .kn, .kd, .kc, .kt) { color: var(--reader-keyword) !important; }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) pre code :is(.st, .ch, .vs, .s, .s1, .s2) { color: var(--reader-string) !important; }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) pre code :is(.dv, .bn, .fl, .mi, .mf) { color: var(--reader-number) !important; }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) pre code :is(.co, .cv, .an, .do, .c, .c1, .cm, .cp) { color: var(--reader-muted) !important; font-style: normal; }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) blockquote {
    background: var(--reader-soft) !important;
    color: var(--reader-text) !important;
    border-left: 3px solid var(--reader-accent) !important;
  }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) :is(th, td) { border-color: var(--reader-line) !important; }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) th { background: var(--reader-code) !important; color: var(--reader-text) !important; }
  :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) :is(img, svg) { max-width: 100%; height: auto; }
  :is(.sidebar, #sidebar, .book-sidebar, .md-sidebar, .mobile-header, .mobile-menu nav) {
    background: var(--reader-surface) !important;
    color: var(--reader-text) !important;
    border-color: var(--reader-line) !important;
  }
  :is(aside, .sidebar, .md-sidebar) a { color: var(--reader-muted); }
  :is(aside, .sidebar, .md-sidebar) a:hover,
  :is(aside, .sidebar, .md-sidebar) a[aria-current] { color: var(--reader-accent) !important; background: var(--reader-soft) !important; }
  :is(.brand-title, .brand-subtitle, .nav-number, .sidebar-brand .eyebrow, .edition) { color: var(--reader-muted) !important; }
  :is(.primary-action, .button-primary, .primary-button, .start, .hero .button) {
    background: var(--reader-accent) !important;
    color: var(--reader-page) !important;
    border-color: var(--reader-accent) !important;
  }
  .contents-list a:hover { background: var(--reader-soft) !important; }
  .aias-basic-reader > #title-block-header { display: none; }
  .aias-basic-reader #TOC:not(:has(a)) { display: none; }
  .aias-basic-reader h1 { font-size: 1.7em; margin-top: 1.4em; }
  .aias-basic-reader blockquote { margin-inline: 0; padding: .5em 1.1em; }
  .aias-reader-tools { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 12px; padding: 12px 0; margin: 0 0 16px; font-size: 13px; }
  .aias-reader-tools a { color: var(--reader-muted); }
  .aias-reader-theme {
    color: var(--reader-text) !important;
    background: var(--reader-surface) !important;
    border: 1px solid var(--reader-line) !important;
    border-radius: 6px;
    padding: 7px 11px;
    font: inherit;
    font-size: 12px;
    line-height: 1.5;
    min-height: 34px;
    cursor: pointer;
  }
  @media (max-width: 680px) {
    :is(main, article, .prose, .book-content, #book, .md-typeset, .aias-basic-reader) {
      font-size: var(--reader-size, var(--body-size, var(--reading-size, var(--size, 17px)))) !important;
    }
  }
}

@media screen {
  .topbar { background: var(--reader-surface); color: var(--reader-text); }
  .topbar a { color: var(--reader-accent); }
  .topbar nav { flex-shrink: 0; white-space: nowrap; }
  .topbar button { color: var(--reader-text); border-color: var(--reader-line); white-space: nowrap; }
  #content a.download { color: var(--reader-page) !important; }
  .topbar .brand { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}
/* END AIAS SHARED READER */