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dialog { background:var(--surface); color:var(--ink); border:1px solid var(--line); border-radius:12px; }
dialog::backdrop { background:#10251ecc; }
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#mobile-panel a,#mobile-panel summary { min-height:44px; }
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#diagram-body svg,#diagram-body img { display:block; width:100%; height:auto; }
#diagram-zoom { margin:.5rem; }
#diagram-status { font-size:.8rem; }
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 .wiki-brand svg { width:25px; height:25px; }
 .wiki-brand small { font-size:.6rem; }
 .utility-nav,.wiki-header>.theme-control { display:none; }
 .mobile-toolbar { display:flex; gap:.15rem; position:absolute; top:.55rem; right:.6rem; z-index:3; }
 .mobile-toolbar button { min-height:44px; width:40px; padding:.4rem; background:transparent; color:var(--accent); border:0; font-size:0; }
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 .subject-nav a { font-size:.7rem; padding:.7rem .55rem; }
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 .wiki-grid { display:block; }
 #breadcrumbs { font-size:.65rem; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; margin:.2rem 0; }
 #breadcrumbs>a:first-child,#breadcrumbs>span:first-of-type { display:none; }
 .chapter-tools { gap:.5rem; margin:.3rem 0; }
 .chapter-tools summary { min-height:36px; padding:.35rem .55rem; }
 #content { padding:.9rem; font-size:16px; border-radius:9px; }
 #content h1 { font-size:1.55rem; margin:.1rem 0 .8rem; line-height:1.2; }
 #content .section-anchor { opacity:1; }
 .chapter-meta { font-size:.68rem; }
 #landing-features h1 { font-size:2.1rem; margin-top:.8rem; }
 .subject-directory-list { display:block; }
 .subject-entry { padding:1.1rem 0; }
 #route-cards { grid-template-columns:1fr; }
 .video-cards,.tool-grid { grid-template-columns:1fr; }
 .table-controls select { width:100%; max-width:100%; }
 #route-pager a,.term-chips button,#mobile-panel button { min-height:44px; }
 #reading-options[open] .theme-control { display:block; margin-top:.6rem; }
}
@media (prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto!important; transition:none!important; animation:none!important; } }
@media print { .wiki-header,.subject-nav,.wiki-search,.topic-sidebar,.section-sidebar,.chapter-tools,.mobile-toolbar,#landing-features,#route-footer,.read-aloud,.diagram-open,.table-controls,#reading-storage-status,#reading-storage-retry { display:none!important; } .wiki-grid { display:block; } .wiki-shell { width:100%; } #content { border:0; padding:0; } #content .section-anchor { display:none; } .answer-reveal>* { display:block; } .table-scroll { overflow:visible; max-height:none; } }

/* Home is a subject directory, not an article with setup controls. */
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.wiki-home .section-sidebar,.wiki-home .chapter-tools,.wiki-home #breadcrumbs { display:none; }
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.wiki-home .subject-entry:nth-child(n+4) { grid-column:span 3; }
.wiki-home #route-cards { grid-template-columns:repeat(3,minmax(0,1fr)); }
.wiki-search { padding:.65rem .9rem; margin-bottom:1.2rem; }
#search-form>label { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); }
.search-row { margin-top:0; }
.wiki-search:not(:focus-within):not(.has-results) #search-hint,.wiki-search:not(:focus-within):not(.has-results) #search-status { display:none; }
@media (max-width:1100px) { .wiki-home .subject-directory-list { grid-template-columns:1fr 1fr; } .wiki-home .subject-entry,.wiki-home .subject-entry:nth-child(n+4) { grid-column:auto; } .wiki-home #route-cards { grid-template-columns:1fr 1fr; } }
@media (max-width:900px) { .wiki-home .wiki-grid { display:block; } .wiki-home #landing-features { padding:.7rem 0; } .wiki-home #landing-features h1 { font-size:2rem; } .wiki-home .subject-directory-list,.wiki-home #route-cards { display:block; } .wiki-home .route-card { margin-bottom:1rem; } #mobile-panel .wiki-search { padding:0; } }

#entry-paths { margin:1.5rem 0 2rem; }
#language-directory { margin:2rem 0; }
.language-groups { display:grid; grid-template-columns:2fr 1fr; gap:0 2rem; }
.language-groups ul { display:flex; flex-wrap:wrap; gap:.4rem 1.2rem; list-style:none; padding:0; }
.language-groups a { display:inline-flex; align-items:center; min-height:44px; }
@media(max-width:900px){.language-groups { grid-template-columns:1fr; }}
#entry-paths h2 { margin-bottom:.8rem; }
.entry-links { display:grid; grid-template-columns:1fr 1fr; gap:1rem; }
.entry-links>a { display:block; padding:1rem 1.1rem; background:var(--accent-soft); border-radius:8px; text-decoration:none; font-weight:700; }
.entry-links span { display:block; color:var(--muted); font-size:.78rem; font-weight:400; line-height:1.6; margin-top:.4rem; }
@media(max-width:900px){.entry-links { grid-template-columns:1fr; }}

/* Owner direction: matte gunmetal, smoky depth and restrained backlighting. */
:root[data-theme="dark"] { --paper:#191e24; --surface:#232a32; --surface-soft:#2c3540; --ink:#e8edf4; --muted:#b3bfce; --line:#3e4a58; --accent:#82d5df; --accent-soft:#253e49; --warn:#f0ca82; --warn-bg:#3e3525; --lesson:#293449; --focus:#efc47f; }
:root[data-theme="dark"] body { background:radial-gradient(ellipse at 20% -15%,#47536140,transparent 62%),var(--paper); }
:root[data-theme="dark"] .wiki-header { background:linear-gradient(180deg,#26313b50,transparent); }
:root[data-theme="dark"] .wiki-brand svg { color:var(--accent); filter:drop-shadow(0 0 5px #60d2df70); }
:root[data-theme="dark"] .wiki-brand span { text-shadow:0 1px 8px #0005; }
:root[data-theme="dark"] .subject-nav a[aria-current] { box-shadow:inset 0 -2px var(--accent),0 5px 9px -8px #82d5df; }
:root[data-theme="dark"] #content { box-shadow:0 12px 35px #05090e25; border-color:#3b4653; }
:root[data-theme="dark"] .wiki-search { background:#242d36; }
:root[data-theme="dark"] .wiki-shell input::placeholder { color:#a5b1c0; opacity:1; }
:root[data-theme="dark"] .claim-label { color:#f0cf91; background:#443925; }
:root[data-theme="dark"] .search-match { background:#d7bb70; color:#18242b; }
:root[data-theme="dark"] ::selection { background:#577f92; color:#fff; }
:root[data-theme="dark"] .teaching-figure picture { display:block; background:#eaf0f4; border-radius:8px; overflow:hidden; }