/* Newspaper typography with matching light and dark reading palettes.
   mdBook uses a 10px rem; explicit interface sizes keep controls legible. */
:root, html.light, html.rust {
  --lacan-elegant-bg: #ffffff;
  --lacan-elegant-surface: #ffffff;
  --lacan-elegant-text: #121212;
  --lacan-elegant-muted: #5c5c5c;
  --lacan-elegant-soft: #f7f7f7;
  --lacan-elegant-border: #dddddd;
  --lacan-elegant-strong-border: #777777;
  --lacan-elegant-accent: #326891;
  --lacan-elegant-code: #555555;
  --lacan-sidebar: #fafafa;
  --lacan-accent-soft: #eaf0f5;
  --lacan-on-accent: #ffffff;
  --lacan-headline: #000000;
  --lacan-comment: #121212;
  --lacan-editorial-surface: #f0f0f0;
  --lacan-error: #a33a3a;
  --lacan-overlay: rgb(0 0 0 / 42%);
  --lacan-shadow: 0 12px 36px rgb(0 0 0 / 12%);
  --lacan-elegant-serif: Georgia, "Times New Roman", "Songti SC", "STSong", "SimSun", serif;
  --lacan-elegant-display: Georgia, "Times New Roman", "Songti SC", "STSong", serif;
  --lacan-elegant-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --lacan-color-scheme: light;
}
html.coal, html.navy, html.ayu {
  --lacan-elegant-bg: #121212;
  --lacan-elegant-surface: #1c1c1c;
  --lacan-elegant-text: #ededed;
  --lacan-elegant-muted: #b0b0b0;
  --lacan-elegant-soft: #202020;
  --lacan-elegant-border: #3c3c3c;
  --lacan-elegant-strong-border: #8c8c8c;
  --lacan-elegant-accent: #a8c9e3;
  --lacan-elegant-code: #c7c7c7;
  --lacan-sidebar: #181818;
  --lacan-accent-soft: #25323c;
  --lacan-on-accent: #121212;
  --lacan-headline: #f5f5f5;
  --lacan-comment: #ededed;
  --lacan-editorial-surface: #272727;
  --lacan-error: #f0aaa0;
  --lacan-overlay: rgb(0 0 0 / 72%);
  --lacan-shadow: 0 12px 36px rgb(0 0 0 / 32%);
  --lacan-color-scheme: dark;
}
:root {
  --bg: var(--lacan-elegant-bg);
  --fg: var(--lacan-elegant-text);
  --sidebar-bg: var(--lacan-sidebar);
  --sidebar-fg: var(--lacan-elegant-muted);
  --sidebar-non-existant: var(--lacan-elegant-muted);
  --sidebar-active: var(--lacan-elegant-accent);
  --sidebar-spacer: var(--lacan-elegant-border);
  --scrollbar: var(--lacan-elegant-strong-border);
  --icons: var(--lacan-elegant-muted);
  --icons-hover: var(--lacan-elegant-accent);
  --links: var(--lacan-elegant-accent);
  --inline-code-color: var(--lacan-elegant-code);
  --theme-popup-bg: var(--lacan-elegant-surface);
  --theme-popup-border: var(--lacan-elegant-border);
  --theme-hover: var(--lacan-accent-soft);
  --table-border-color: var(--lacan-elegant-border);
  --table-header-bg: var(--lacan-elegant-soft);
  --table-alternate-bg: var(--lacan-elegant-surface);
  --quote-bg: var(--lacan-elegant-soft);
  --quote-border: var(--lacan-elegant-strong-border);
  --warning-border: var(--lacan-comment);
  --color-scheme: var(--lacan-color-scheme);
  --lacan-original-accent: var(--lacan-elegant-muted);
  --lacan-original-bg: transparent;
  --lacan-note-accent: var(--lacan-headline);
  --lacan-note-bg: var(--lacan-elegant-soft);
  --lacan-commentary-accent: var(--lacan-comment);
  --lacan-commentary-bg: var(--lacan-editorial-surface);
  --lacan-share-selected-bg: var(--lacan-accent-soft);
  --lacan-share-selected-border: var(--lacan-elegant-accent);
  --lacan-target-bg: var(--lacan-elegant-soft);
  --sidebar-target-width: 286px;
  --content-max-width: 776px;
  --menu-bar-height: 60px;
  --page-padding: 24px;
  --lacan-reading-offset: 154px;
  color-scheme: var(--lacan-color-scheme);
}
body { font-family: var(--lacan-elegant-serif); -webkit-font-smoothing: antialiased; }
::selection { background: var(--lacan-accent-soft); color: var(--fg); }
:focus-visible { outline: 2px solid var(--links); outline-offset: 4px; }
#mdbook-theme-rust, #mdbook-theme-coal, #mdbook-theme-ayu { display: none !important; }

/* The library spine stays visible independently of the long chapter list. */
.sidebar { border-right: 1px solid var(--lacan-elegant-border); }
.sidebar, .menu-bar, .theme-popup, .reading-controls,
.lacan-nav-dialog, .lacan-ai-panel, .lacan-ai-settings {
  font-family: var(--lacan-elegant-sans);
}
.lacan-sidebar-brand { padding: 30px 24px 0; }
.lacan-brand-link { display: block; width: fit-content; text-decoration: none; }
.lacan-brand-wordmark { display: block; color: var(--lacan-headline); font: 700 40px/1 var(--lacan-elegant-display); letter-spacing: -0.04em; }
.lacan-brand-title { display: block; margin: 12px 0 22px; color: var(--lacan-elegant-muted); font-size: 12px; letter-spacing: 0.08em; }
.lacan-sidebar-search {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; min-height: 40px; padding: 8px 12px;
  border: 1px solid var(--lacan-elegant-border); border-radius: 4px;
  background: var(--bg); color: var(--lacan-elegant-muted);
  font: 12px var(--lacan-elegant-sans); cursor: pointer;
}
.lacan-sidebar-search:hover { border-color: var(--links); color: var(--links); }
.lacan-search-key { padding: 1px 5px; border: 0; background: var(--lacan-elegant-soft); }
.lacan-sidebar-caption { margin-top: 22px; padding-bottom: 14px; border-bottom: 3px double var(--lacan-elegant-strong-border); color: var(--lacan-elegant-muted); font-size: 11px; letter-spacing: 0.04em; }
.lacan-branded-sidebar .sidebar-scrollbox { top: 232px; padding: 10px 16px 32px; }
.chapter { margin: 0; font-size: 13px; }
.chapter li.chapter-item { margin-top: 3px; }
.chapter-link-wrapper { align-items: center; border-radius: 4px; }
.chapter li a[href] { flex: 1; min-width: 0; padding: 9px 10px; line-height: 1.55; }
.chapter-link-wrapper:has(a.active) { background: var(--lacan-accent-soft); }
.chapter li a.active { box-shadow: inset 2px 0 var(--links); font-weight: 600; }
.chapter-link-wrapper:hover { background: var(--lacan-elegant-soft); }
.chapter .section { margin: 6px 0 16px 10px; padding-left: 8px; border-left: 1px solid var(--lacan-elegant-border); }
.chapter .section a[href] { font-size: 12px; padding: 7px 9px; }
.chapter-fold-toggle { padding: 10px; font-size: 11px; }

#mdbook-menu-bar { flex-wrap: nowrap; align-items: center; border-bottom-color: var(--lacan-elegant-border); background: var(--bg); }
#mdbook-menu-bar .icon-button { display: inline-flex; align-items: center; justify-content: center; min-width: 42px; height: 60px; padding: 0 8px; transition: color 140ms ease; }
#mdbook-menu-bar .fa-svg { padding: 0; font-size: 14px; }
.left-buttons { margin: 0 14px; }
.right-buttons { display: flex; gap: 16px; margin: 0 22px; }
.menu-title { color: var(--fg); font-size: 13px; font-weight: 600; letter-spacing: 0.04em; }
.lacan-nav-menu-glyph { font-size: 13px; font-weight: 500; }
.theme-popup { top: 52px; padding: 6px; min-width: 188px; border-radius: 3px; box-shadow: var(--lacan-shadow); }
.theme-popup .theme { padding: 12px 14px; font: 13px var(--lacan-elegant-sans); border-radius: 3px; }
.theme-popup .theme-selected { color: var(--links); background: var(--lacan-accent-soft); }

/* Reading measure and headings follow a book's hierarchy. */
.content { overflow: visible; padding: 0 0 64px; }
.content main {
  box-sizing: border-box; max-width: var(--content-max-width);
  min-height: calc(100vh - var(--menu-bar-height)); padding: 56px 48px 48px;
  color: var(--fg); font: 18px/1.8 var(--lacan-elegant-serif); overflow-wrap: anywhere;
}
.content main .lacan-page-kicker { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; color: var(--fg); font: 600 12px/1.6 var(--lacan-elegant-sans); letter-spacing: 0.06em; }
.lacan-page-kicker::before { content: ""; flex: 0 0 26px; height: 2px; background: var(--lacan-headline); }
.content main .lacan-page-kicker a { border: 0; color: inherit; }
.content main h1, .content main h2, .content main h3,
.content main h4, .content main h5, .content main h6 {
  color: var(--lacan-headline); font-family: var(--lacan-elegant-serif); font-weight: 700;
  text-align: left; scroll-margin-top: var(--lacan-reading-offset);
}
.content main h1 { margin: 0 0 24px; padding-bottom: 20px; border-bottom: 1px solid var(--lacan-headline); font-size: 42px; line-height: 1.2; letter-spacing: -0.02em; }
.content main h1 .header { display: block; }
.lacan-lesson-number { display: block; font: 700 42px/1.2 var(--lacan-elegant-display); letter-spacing: -0.02em; }
.lacan-title-separator { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.lacan-lesson-date { display: block; margin-top: 14px; color: var(--lacan-elegant-muted); font: 14px/1.5 var(--lacan-elegant-sans); letter-spacing: 0.08em; }
.content main h2 { margin: 48px 0 16px; font-size: 32px; line-height: 1.3; letter-spacing: -0.01em; }
.content main h3 { margin: 40px 0 16px; font-size: 24px; line-height: 1.4; }
.content main h4 { margin: 32px 0 12px; font-size: 20px; line-height: 1.5; }
.content main h5 { margin: 28px 0 12px; font-size: 18px; line-height: 1.5; }
.content main h6 { margin: 24px 0 10px; font-size: 16px; line-height: 1.5; font-style: italic; }
.content main p { margin: 20px 0; line-height: inherit; text-indent: 0; }
.content main a { color: var(--links); text-decoration: none; border-bottom: 1px solid var(--links); text-underline-offset: 4px; }
.content main a:hover { border-color: var(--links); text-decoration: none; }
.content main .header { border: 0; color: inherit; }
.content main strong { color: var(--lacan-headline); font-weight: 700; }
.content main em { color: inherit; }
.content main ul, .content main ol { margin: 24px 0; padding-left: 2em; line-height: inherit; }
.content main li { margin: 12px 0; line-height: inherit; }
.content main li::marker { color: var(--links); }
.content main blockquote { margin: 24px 0; padding: 14px 24px; border: 0; border-left: 5px solid var(--lacan-headline); background: var(--lacan-elegant-soft); color: var(--fg); font-size: 18px; line-height: 1.6; font-style: italic; }
.content main blockquote p { margin: 8px 0; }
.content main code { padding: 2px 5px; border-radius: 3px; background: var(--lacan-elegant-soft); color: var(--inline-code-color); font-size: 0.82em; }
.content main pre { margin: 24px 0; padding: 18px; overflow-x: auto; border: 1px solid var(--lacan-elegant-border); border-radius: 4px; background: var(--lacan-elegant-soft); line-height: 1.7; }
.content main pre code { padding: 0; background: transparent; color: inherit; }
.content main hr { max-width: 100px; height: 1px; margin: 48px auto; border: 0; background: var(--lacan-elegant-border); }
.content main img { display: block; max-width: 100%; max-height: 560px; height: auto; margin: 24px auto; border-radius: 2px; }
.content main .table-wrapper { margin: 32px 0; }
.content main table { width: 100%; margin: 0; border: 1px solid var(--lacan-elegant-border); font: 16px/1.7 var(--lacan-elegant-serif); }
.content main th { padding: 14px 16px; border: 1px solid var(--lacan-elegant-border); color: var(--fg); font-weight: 700; text-align: left; }
.content main td { padding: 14px 16px; border: 1px solid var(--lacan-elegant-border); }
.content main tr { border: 0; }
.content main sup, .content main sub { text-indent: 0; }

/* Keep reading actions together, with usable type and touch targets. */
.reading-controls {
  position: sticky; top: var(--menu-bar-height); right: auto; z-index: 30;
  display: flex; flex-direction: row; flex-wrap: wrap; align-items: center; gap: 10px 14px;
  box-sizing: border-box; width: auto; margin: 0 0 32px; padding: 14px 0;
  border: 0;
  border-bottom: 1px solid var(--lacan-elegant-border); border-radius: 0;
  background: var(--bg); box-shadow: none; line-height: 1.4;
}
.lacan-toggle-group { flex-direction: row; flex-wrap: wrap; gap: 12px; }
.reading-controls label { gap: 6px; min-height: 34px; color: var(--lacan-elegant-muted); font-size: 13px; }
.reading-controls input[type="checkbox"] { width: 15px; height: 15px; margin: 0; accent-color: var(--links); }
.reading-controls label:has(input:checked) { color: var(--fg); }
.reading-controls label:has(input[data-lacan-toggle="notes"]),
.reading-controls label:has(input[data-lacan-toggle="commentary"]) { font-weight: 700; }
.lacan-tool-search { flex: 1 1 180px; max-width: none; gap: 5px; }
.lacan-tool-search-input, .lacan-tool-button {
  min-height: 34px; padding: 7px 10px; border: 1px solid var(--lacan-elegant-border);
  border-radius: 4px; background: var(--lacan-elegant-surface); color: var(--fg);
  font: 12px/1.4 var(--lacan-elegant-sans);
}
.lacan-tool-search-input { width: 100%; }
.lacan-tool-search-input::placeholder { color: var(--lacan-elegant-muted); }
.lacan-tool-button:hover { border-color: var(--links); background: var(--lacan-accent-soft); }
.lacan-back-to-top { width: 34px; padding: 5px; font-size: 18px; }
.lacan-share-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.lacan-share-toggle[aria-pressed="true"] { border-color: var(--links); background: var(--lacan-accent-soft); }
.lacan-share-count { color: var(--lacan-elegant-muted); font-size: 12px; }

/* Source, translation and editorial notes each have their own rhythm. */
.content main .parallel-text { gap: 30px; }
.content main .parallel-paragraph { display: block; padding: 26px 0 0; border-top: 1px solid var(--lacan-elegant-border); scroll-margin-top: var(--lacan-reading-offset); }
.content main .parallel-paragraph:first-child { border-top: 0; padding-top: 0; }
.content main .paragraph-id { display: inline-block; max-width: 100%; margin-bottom: 14px; color: var(--lacan-elegant-muted); font: 11px/1.65 var(--mono-font); letter-spacing: 0.03em; overflow-wrap: anywhere; }
.paragraph-anchor-alias { scroll-margin-top: var(--lacan-reading-offset); }
.content main .translation-block { margin: 24px 0 18px; }
.content main .translation-block p { text-indent: 0; }
.content main .original-block { margin-top: 0; padding: 4px 0 4px 18px; border-left: 1px solid var(--lacan-elegant-border); border-radius: 0; background: var(--lacan-original-bg); box-shadow: none; }
.content main .original-block summary { color: var(--lacan-elegant-muted); font: 12px/1.7 var(--lacan-elegant-sans); letter-spacing: 0.02em; cursor: pointer; }
.content main .original-block summary::after { content: "FR"; margin-left: 10px; padding: 2px 5px; border: 1px solid var(--lacan-elegant-strong-border); border-radius: 2px; font-size: 9px; }
.content main .original-block[open] summary { margin-bottom: 12px; }
.content main .original-paragraph { color: var(--lacan-elegant-muted); font-family: var(--lacan-elegant-serif); font-size: 17px; line-height: 1.8; }
.content main .original-paragraph p { margin: 12px 0; text-indent: 0; }
.content main .original-paragraph > :last-child { margin-bottom: 0; }
.content main .note-block, .content main .commentary-block { margin: 24px 0; padding: 18px 24px; border-left-width: 5px; border-radius: 0; box-shadow: none; color: var(--fg); font-size: 18px; line-height: 1.8; }
.content main .note-block { background: var(--lacan-note-bg); }
.content main .commentary-block { background: var(--lacan-commentary-bg); }
.note-block::before, .commentary-block::before { margin: 0 0 14px; padding: 4px 9px; border: 0; border-radius: 0; background: var(--lacan-headline); color: var(--bg); font: 700 13px/1.4 var(--lacan-elegant-sans); letter-spacing: 0.08em; }
.content main .note-block > blockquote, .content main .commentary-block > blockquote { margin: 0; padding: 0; border: 0; background: transparent; color: var(--fg); font-size: inherit; line-height: inherit; font-style: normal; }
.content main .note-block p, .content main .commentary-block p { text-indent: 0; }
.content main .reading-note-links { margin: 16px 0 0; color: var(--lacan-elegant-muted); font: 11px/1.8 var(--lacan-elegant-sans); text-align: left; }
.reading-note-links-title { font: inherit; }
.content main .reading-note-links a { margin-right: 8px; }
.lacan-share-select, .lacan-share-select input { width: 18px; height: 18px; }
.lacan-share-select { margin-right: 8px; }
.content main .parallel-paragraph.lacan-share-selected,
.content main .parallel-paragraph:target { padding: 20px; border-radius: 3px; }
.content main .footnote-definition p, .content main .original-notes p { text-indent: 0; }
.footnote-definition { font-size: 15px; line-height: 1.85; }

.content main.lacan-home h1 { margin-bottom: 24px; font-size: clamp(32px, 3.5vw, 42px); line-height: 1.35; }
.lacan-home-subtitle { display: none; }
.content main .lacan-home-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 42px; }
.content main .lacan-home-actions a { padding: 11px 22px; border: 1px solid var(--links); border-radius: 3px; font: 13px/1.6 var(--lacan-elegant-sans); }
.content main .lacan-home-primary { background: var(--links); color: var(--lacan-on-accent); }
.content main .lacan-home-secondary { background: transparent; color: var(--links); }
.content main .lacan-home-actions a:hover { filter: brightness(0.94); }
.content main.lacan-home img[src*="qq-group"] { width: 240px; }

/* Compact navigation leaves the reading margins clear. */
.nav-wide-wrapper { display: none; }
.nav-wrapper { display: flex; justify-content: space-between; gap: 20px; max-width: 680px; margin: 20px auto 0; padding-top: 24px; border-top: 1px solid var(--lacan-elegant-border); }
.mobile-nav-chapters { display: inline-flex; align-items: center; justify-content: center; gap: 10px; width: auto; min-height: 44px; padding: 0 16px; border: 1px solid var(--lacan-elegant-border); border-radius: 3px; background: transparent; color: var(--links); font: 13px var(--lacan-elegant-sans); text-decoration: none; }
.mobile-nav-chapters.previous::after { content: "上一篇"; }
.mobile-nav-chapters.next::before { content: "下一篇"; }
.mobile-nav-chapters.next { margin-left: auto; }

/* Search shares the palette and a comfortable keyboard-friendly scale. */
.lacan-nav-overlay { padding: min(12vh, 100px) 20px 20px; background: var(--lacan-overlay); backdrop-filter: blur(5px); }
.lacan-nav-dialog { width: min(620px, 100%); max-height: 80dvh; border-radius: 8px; background: var(--lacan-elegant-surface); box-shadow: var(--lacan-shadow); }
.lacan-nav-header { padding: 24px 24px 16px; }
.lacan-nav-header h2 { font: 24px/1.4 var(--lacan-elegant-serif); }
.lacan-nav-close { width: 36px; height: 36px; font-size: 24px; }
.lacan-nav-form { grid-template-columns: minmax(0, 1fr) auto; gap: 10px; padding: 0 24px; }
.lacan-nav-input { min-height: 46px; padding: 10px 14px; font-size: 16px; }
.lacan-nav-submit { padding: 10px 18px; border-color: var(--links); background: var(--links); color: var(--lacan-on-accent); font-size: 14px; }
.lacan-nav-help, .lacan-nav-status { padding: 14px 24px 0; font-size: 12px; line-height: 1.7; }
.lacan-nav-status { padding-top: 6px; }
.lacan-nav-results { max-height: min(48dvh, 480px); margin-top: 20px; padding-bottom: 16px; }
.lacan-nav-result-link { gap: 6px; padding: 16px 24px; }
.lacan-nav-result-title { font-size: 15px; font-weight: 500; }
.lacan-nav-result-meta { font-size: 12px; }

/* The existing assistant shares the reading palette. */
.lacan-ai-launcher { right: 20px; bottom: 20px; width: 46px; height: 46px; border: 1px solid var(--lacan-elegant-strong-border); background: var(--links); color: var(--lacan-on-accent); font: 13px var(--lacan-elegant-sans); box-shadow: var(--lacan-shadow); }
.lacan-ai-panel { border-color: var(--lacan-elegant-border); box-shadow: var(--lacan-shadow); }
.lacan-ai-header, .lacan-ai-output-toolbar { border-color: var(--lacan-elegant-border); }
.lacan-ai-primary { border-color: var(--links); background: var(--links); color: var(--lacan-on-accent); }
.lacan-ai-input, .lacan-ai-secondary, .lacan-ai-close, .lacan-ai-open-card, .lacan-ai-copy { border-color: var(--lacan-elegant-strong-border); }
.lacan-ai-result, .lacan-ai-selected, .lacan-ai-output-shell, .lacan-ai-diagnostics, .lacan-ai-copy { border-color: var(--lacan-elegant-border); background: var(--lacan-elegant-soft); }
.lacan-ai-result[aria-selected="true"] { border-color: var(--links); background: var(--lacan-accent-soft); box-shadow: inset 3px 0 var(--links); }
.lacan-ai-result:hover, .lacan-ai-copy:hover:not(:disabled) { border-color: var(--links); background: var(--lacan-accent-soft); }
.lacan-ai-settings-notice { border-color: var(--links); background: var(--lacan-elegant-soft); }
.lacan-ai-resizer::before, .lacan-ai-resizer:hover::before, .lacan-ai-panel[data-resizing="true"] .lacan-ai-resizer::before { color: var(--links); }
.lacan-ai-panel { display: flex; flex-direction: column; height: 100dvh; font-size: 14px; }
.lacan-ai-header { flex-shrink: 0; padding: 16px 20px; }
.lacan-ai-header h2 { font-size: 17px; }
.lacan-ai-body { flex: 1; min-height: 0; height: auto; padding: 20px 20px 76px; }
.lacan-ai-body h3 { margin: 20px 0 10px; font-size: 14px; }
.lacan-ai-function-help, .lacan-ai-selection-summary { padding: 12px 14px; border-color: var(--lacan-elegant-border); background: var(--lacan-elegant-soft); }
.lacan-ai-function-help { border-left-color: var(--links); }
.lacan-ai-selection-summary { box-shadow: inset 3px 0 var(--links); }
.lacan-ai-selection-summary strong, .lacan-ai-output-label,
.lacan-ai-result-meta, .lacan-ai-result-tags, .lacan-ai-selected-meta,
.lacan-ai-selected p, .lacan-ai-copy, .lacan-ai-copy-feedback { font-size: 12px; }
.lacan-ai-primary, .lacan-ai-secondary, .lacan-ai-close, .lacan-ai-danger { min-height: 34px; padding: 7px 12px; }
.lacan-ai-question { min-height: 100px; }
.lacan-ai-knowledge-workspace { border-color: var(--lacan-elegant-border); }
.lacan-ai-output a { color: var(--links); }
.lacan-ai-output blockquote { border-color: var(--links); }
.lacan-ai-output hr, .lacan-ai-output pre, .lacan-ai-output th, .lacan-ai-output td { border-color: var(--lacan-elegant-border); }
.lacan-ai-output code, .lacan-ai-output th, .lacan-ai-output pre { background: var(--lacan-elegant-soft); }
.lacan-ai-status[data-kind="error"], .lacan-ai-output[data-kind="error"], .lacan-ai-copy-feedback[data-kind="error"], .lacan-ai-danger { color: var(--lacan-error); border-color: var(--lacan-error); }
.lacan-ai-launcher:focus-visible, .lacan-ai-result:focus-visible, .lacan-ai-copy:focus-visible, .lacan-ai-resizer:focus-visible { outline-color: var(--links); }
.lacan-ai-settings-overlay { background: var(--lacan-overlay); padding: 16px; }
.lacan-ai-settings { padding: 24px; border: 1px solid var(--lacan-elegant-border); border-radius: 6px; box-shadow: var(--lacan-shadow); font-size: 14px; }
.lacan-ai-settings h2 { font: 24px var(--lacan-elegant-serif); }
.lacan-ai-label { margin: 18px 0 8px; font-size: 13px; }
.lacan-ai-check { margin-top: 16px; font-size: 13px; }
.lacan-ai-settings-notice, .lacan-ai-settings-message { font-size: 12px; line-height: 1.7; }

@media (max-width: 1100px) {
  :root { --page-padding: 20px; }
  .content main { padding: 40px 20px; }
  .menu-title { font-size: 12px; letter-spacing: 0.06em; }
}
@media (max-width: 700px) {
  :root { --page-padding: 20px; --menu-bar-height: 54px; --lacan-reading-offset: 190px; }
  .content main { padding: 30px 0 24px; font-size: 18px; line-height: 1.8; }
  .content main h1 { font-size: 34px; }
  .content main h2 { font-size: 28px; margin-top: 36px; }
  .content main h3 { font-size: 23px; }
  .lacan-lesson-number { font-size: 34px; }
  .lacan-lesson-date { font-size: 12px; }
  .content main .lacan-page-kicker { font-size: 10px; margin-bottom: 18px; }
  #mdbook-menu-bar .icon-button { min-width: 38px; height: 54px; }
  .left-buttons { margin: 0 6px; }
  .right-buttons { gap: 12px; margin: 0 14px; }
  .menu-title { font-size: 11px; letter-spacing: 0; text-align: left; }
  .reading-controls { gap: 8px 12px; margin-bottom: 24px; padding: 10px 0; }
  .lacan-toggle-group { flex: 1 1 auto; gap: 14px; }
  .reading-controls label { min-height: 38px; }
  .lacan-tool-search { order: 4; flex-basis: 100%; }
  .lacan-tool-search-input { min-height: 38px; font-size: 16px; }
  .lacan-tool-button { min-height: 38px; }
  .content main .original-block { padding: 4px 0 4px 14px; }
  .content main .original-paragraph { font-size: 17px; }
  .content main .note-block, .content main .commentary-block { padding: 16px; font-size: 18px; }
  .content main .translation-block { margin-top: 22px; }
  .content main .parallel-text { gap: 20px; }
  .content main .parallel-paragraph:target, .content main .parallel-paragraph.lacan-share-selected { padding: 14px; }
  .lacan-nav-overlay { padding: 16px 10px; }
  .lacan-nav-dialog { width: 100%; min-height: 0; max-height: calc(100dvh - 32px); border: 1px solid var(--lacan-elegant-border); border-radius: 6px; }
  .lacan-nav-header { padding: 18px 16px 14px; }
  .lacan-nav-form { padding: 0 16px; }
  .lacan-nav-help, .lacan-nav-status { padding-right: 16px; padding-left: 16px; }
  .lacan-nav-results { max-height: calc(100dvh - 270px); }
  .lacan-nav-result-link { padding: 14px 16px; }
  .lacan-ai-launcher { right: 14px; bottom: 14px; width: 42px; height: 42px; }
}
@media (max-width: 380px) {
  .right-buttons { display: none; }
  .lacan-toggle-group { gap: 8px; }
  .reading-controls { column-gap: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  html.js .page-wrapper, html.js .sidebar, .chapter-fold-toggle div,
  .lacan-ai-launcher, .lacan-ai-result { transition: none; }
  html { scroll-behavior: auto; }
}
@media print {
  html[class] { --lacan-elegant-bg: #fff; --lacan-elegant-text: #000; --lacan-elegant-muted: #444; --lacan-elegant-soft: #f5f5f5; --lacan-elegant-surface: #fff; --lacan-elegant-accent: #326891; --lacan-headline: #000; --lacan-comment: #000; --lacan-editorial-surface: #f0f0f0; --lacan-elegant-border: #ccc; --lacan-elegant-strong-border: #999; --lacan-color-scheme: light; }
  .reading-controls, .lacan-sidebar-brand, .lacan-home-actions, .nav-wrapper,
  .lacan-ai-launcher, .lacan-ai-panel, .lacan-ai-settings-overlay, .lacan-nav-overlay { display: none !important; }
  #mdbook-page-wrapper.page-wrapper { margin-inline-end: 0; }
  .content main { max-width: none; min-height: 0; padding: 0; font-size: 12pt; }
  .content main .parallel-paragraph { break-inside: auto; }
  .content main .original-block, .content main .note-block, .content main .commentary-block { background: transparent; }
  .content main .note-block, .content main .commentary-block { font-size: inherit; }
  .note-block::before, .commentary-block::before { padding-left: 0; background: transparent; color: var(--fg); }
  .content main h1 { margin-top: 24px; }
}