:root{color-scheme:light;--bg:#faf8f3;--panel:#efede5;--ink:#252d2a;--muted:#66736c;--accent:#236d5f;--line:#d9ded5;--code:#eef0e9;--size:18px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.8 system-ui,-apple-system,"PingFang SC",sans-serif}body.dark{color-scheme:dark;--bg:#17211e;--panel:#1d2b25;--ink:#e3e8de;--muted:#a5b3a8;--accent:#91d7bd;--line:#34463b;--code:#1e2e27}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button,input,select{font:inherit}button{cursor:pointer;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:6px;padding:4px 12px}button:hover{border-color:var(--accent)}button:disabled{opacity:.4;cursor:default}header{height:68px;display:flex;align-items:center;gap:18px;padding:0 28px;border-bottom:1px solid var(--line);position:fixed;inset:0 0 auto;z-index:5;background:var(--bg)}.brand{font-weight:750;letter-spacing:.03em;margin-right:auto;color:var(--ink)}.download{font-size:14px}#menu{display:none}aside{position:fixed;top:68px;bottom:0;width:340px;background:var(--panel);padding:28px 24px;overflow:auto;border-right:1px solid var(--line)}.eyebrow{font-size:11px;letter-spacing:.12em;color:var(--accent)}.intro h1{font-family:serif;font-weight:500;font-size:30px;line-height:1.4;margin:12px 0}.intro p{color:var(--muted);font-size:13px;margin:6px 0}#stats{margin-bottom:28px}label{display:block;font-size:12px;color:var(--muted);margin:12px 0 6px}#search-form{display:flex;gap:6px}input[type=search],select{width:100%;min-width:0;border:1px solid var(--line);background:var(--bg);color:var(--ink);padding:8px;border-radius:6px;font-size:13px}#search-form button{font-size:12px;white-space:nowrap;padding:4px 8px}.check{display:flex;align-items:center;gap:6px}#search-status{font-size:12px;color:var(--muted)}nav a{display:block;padding:7px 9px;font-size:13px;border-radius:5px;overflow-wrap:anywhere;line-height:1.5}nav a[aria-current=page]{background:var(--bg);color:var(--accent);font-weight:650}nav h2{font-size:12px;letter-spacing:.08em;color:var(--muted);margin:24px 9px 10px}nav details summary{cursor:pointer;font-size:13px;padding:8px;color:var(--muted)}main{margin:68px 0 0 340px;padding:32px clamp(24px,5vw,90px) 60px;min-height:calc(100vh - 68px)}#reading-tools{display:flex;align-items:center;gap:8px;margin-bottom:40px}#position{margin-left:auto;font-size:12px;color:var(--muted)}article{max-width:900px;margin:auto;font-size:var(--size)}article h1{font-family:serif;font-size:clamp(26px,3vw,40px);line-height:1.45;font-weight:500;margin:0 0 30px;overflow-wrap:anywhere}article p{margin:1.3em 0;line-height:2}article h2{font-size:18px;margin-top:36px}.source-meta{font-size:12px;color:var(--muted);overflow-wrap:anywhere}.source-meta a{margin-right:16px}pre{background:var(--code);border:1px solid var(--line);padding:20px;border-radius:8px;overflow:auto;tab-size:2;font:calc(var(--size) * .76)/1.7 ui-monospace,SFMono-Regular,Consolas,monospace}pre.wrap{white-space:pre-wrap;overflow-wrap:anywhere}footer{display:flex;justify-content:space-between;gap:20px;max-width:900px;margin:56px auto 30px;padding-top:22px;border-top:1px solid var(--line)}.notice{font-size:11px;color:var(--muted);max-width:900px;margin:20px auto}#content:focus{outline:none}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}@media(max-width:850px){header{padding:0 16px;gap:12px}#menu{display:block}aside{display:none;width:min(340px,92vw);z-index:4;box-shadow:10px 0 30px #0002}aside.open{display:block}main{margin-left:0;padding:24px 20px 40px}.brand{font-size:14px}#reading-tools{margin-bottom:28px}.download{font-size:12px}article{font-size:var(--size)}}

/* 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 {
  header .brand { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  header button, header .download { flex-shrink: 0; white-space: nowrap; }
}
/* END AIAS SHARED READER */