/* Layout: a stepped ziggurat home (myth at the base, modern inquiry near the top),
   then encyclopedia pages: a sticky contents rail beside a single reading column. */
/* Palette: a martial-arts hero's orange training gi and blue undershirt, a jade
   sky-dragon, and the gold aura of a power-up, all as plain colors. Pyramid climbs
   from jade (earth, dragon) through blue to orange and gold at the summit. */
:root {
  --stone: #EEF3EE;      /* page ground: pale jade-white */
  --slab: #F9FBF8;       /* raised surface */
  --ink: #14181F;        /* text: hair-black */
  --muted: #4E5B5E;      /* secondary text */
  --rule: #C9D8CF;       /* hairlines */
  --lapis: #C2540A;      /* main accent: gi orange (deepened for contrast) */
  --ochre: #1B4AA0;      /* second accent: undershirt blue, used for dates and symbols */
  --t0: #0E5A3A; --t1: #17744B; --t2: #1C4FA6; --t3: #E2781C; --t4: #F2C230;
  --apex: #D3341F;       /* dragon-eye red */
  --t-dark-fg: #F4F8F4; --t-light-fg: #14181F;
  --chip: #DCEBE1;
  --flash: #FBE7A6;
  --font-display: "Marcellus", "Trajan Pro", Georgia, serif;
  --font-body: "Spectral", Georgia, "Times New Roman", serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --stone: #0A1512; --slab: #11211C; --ink: #ECF2EC; --muted: #9DB2A8; --rule: #213830;
    --lapis: #FF9A3C; --ochre: #F2C230; --apex: #E5432B;
    --t0: #0D4A30; --t1: #126643; --t2: #1B4594; --t3: #DE7316; --t4: #EBB521;
    --t-dark-fg: #F4F8F4; --t-light-fg: #14181F; --chip: #1A3229; --flash: #4A3A10;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --stone: #0A1512; --slab: #11211C; --ink: #ECF2EC; --muted: #9DB2A8; --rule: #213830;
  --lapis: #FF9A3C; --ochre: #F2C230; --apex: #E5432B;
  --t0: #0D4A30; --t1: #126643; --t2: #1B4594; --t3: #DE7316; --t4: #EBB521;
  --t-dark-fg: #F4F8F4; --t-light-fg: #14181F; --chip: #1A3229; --flash: #4A3A10;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--stone); color: var(--ink); font-family: var(--font-body); font-size: 17px; line-height: 1.6; }
a { color: var(--lapis); }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--ochre); outline-offset: 2px; }
button { color: inherit; }

.wrap { max-width: 1180px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }

/* Header */
.top { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; background: var(--stone); border-bottom: 1px solid var(--rule); }
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 10; background: var(--stone); }
.top .wrap { display: flex; align-items: center; gap: 12px 18px; padding-block: 10px; flex-wrap: wrap; }
.brand { font-family: var(--font-display); font-size: 22px; letter-spacing: .08em; color: var(--ink); text-decoration: none; text-transform: uppercase; background: none; border: 0; padding: 0; cursor: pointer; text-align: left; }
.brand small { display: block; font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em; color: var(--muted); }
.mainnav { display: flex; gap: 2px; flex-wrap: wrap; }
.mainnav button { font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; background: none; border: 0; padding: 6px 8px; cursor: pointer; color: var(--muted); border-radius: 3px; }
.mainnav button:hover, .mainnav button.on { color: var(--lapis); background: var(--chip); }
.search { flex: 1 1 220px; min-width: 0; position: relative; }
.search input { width: 100%; font: inherit; font-size: 15px; padding: 8px 12px; background: var(--slab); color: var(--ink); border: 1px solid var(--rule); border-radius: 4px; }
.results { position: absolute; left: 0; right: 0; top: calc(100% + 4px); background: var(--slab); border: 1px solid var(--rule); border-radius: 4px; max-height: 60vh; overflow-y: auto; box-shadow: 0 8px 24px rgba(10, 20, 40, .18); }
.results button { display: block; width: 100%; text-align: left; font: inherit; font-size: 15px; padding: 8px 12px; border: 0; border-bottom: 1px solid var(--rule); background: none; cursor: pointer; }
.results button:hover, .results button:focus { background: var(--chip); }
.results .kind { font-family: var(--font-mono); font-size: 11px; color: var(--ochre); text-transform: uppercase; letter-spacing: .1em; margin-right: 8px; }

.crumbs { font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; color: var(--muted); padding-block: 18px 0; display: flex; flex-wrap: wrap; gap: 6px; }
.crumbs button { font: inherit; background: none; border: 0; padding: 0; color: var(--lapis); cursor: pointer; text-transform: uppercase; }
.crumbs span { text-transform: uppercase; }
main { padding-block: 8px 64px; }

/* Generic */
.lnk { font: inherit; background: none; border: 0; padding: 0; color: var(--lapis); cursor: pointer; text-align: left; }
.lnk:hover { text-decoration: underline; }
.bare { border: 0; padding: 0; background: none; cursor: pointer; }
.note { color: var(--muted); font-size: 14px; }
.sub { font-family: var(--font-mono); font-size: 11px; letter-spacing: .06em; color: var(--muted); text-transform: uppercase; }
.eyebrow { font-family: var(--font-mono); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--ochre); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: 14px; background: var(--chip); padding: 2px 10px; border-radius: 999px; border: 0; }
.lnkchip { cursor: pointer; font: inherit; font-size: 15px; padding: 4px 12px; }
.lnkchip small { font-family: var(--font-mono); font-size: 10px; color: var(--muted); text-transform: uppercase; margin-left: 4px; }
.links { display: flex; flex-wrap: wrap; gap: 8px 16px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; }
.links a { text-decoration: none; border-bottom: 1px solid currentColor; }
.flash { background: var(--flash); transition: background 1s; }

/* Home */
.hero { text-align: center; padding-block: 28px 8px; }
.hero h1 { font-family: var(--font-display); font-weight: 400; font-size: clamp(32px, 5vw, 50px); letter-spacing: .06em; margin: 0; text-wrap: balance; }
.hero p { color: var(--muted); max-width: 64ch; margin: 8px auto 0; }
.stats { font-family: var(--font-mono); font-size: 12px; letter-spacing: .12em; color: var(--ochre); text-transform: uppercase; margin-top: 10px; font-variant-numeric: tabular-nums; }
.quick { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 8px; margin-top: 24px; }
.quick button { font: inherit; text-align: left; background: var(--slab); border: 1px solid var(--rule); border-radius: 4px; padding: 10px 14px; cursor: pointer; }
.quick button:hover { border-color: var(--lapis); }
.quick b { display: block; font-family: var(--font-display); font-weight: 400; font-size: 19px; color: var(--lapis); }
.quick span { font-size: 14px; color: var(--muted); }

.zig { display: flex; flex-direction: column; align-items: center; gap: 4px; padding-block: 28px 12px; }
.apex { width: 0; height: 0; border-left: 70px solid transparent; border-right: 70px solid transparent; border-bottom: 64px solid var(--apex); }
.apex-label { font-family: var(--font-display); letter-spacing: .3em; text-transform: uppercase; font-size: 13px; margin-bottom: 6px; }
.step { width: var(--w); max-width: 100%; background: var(--bg); color: var(--fg); padding: 14px 16px 16px; display: grid; gap: 10px; }
.step header { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: baseline; }
.step h2 { font-family: var(--font-display); font-weight: 400; font-size: 15px; letter-spacing: .18em; text-transform: uppercase; margin: 0; }
.step header p { margin: 0; font-size: 14px; font-style: italic; opacity: .88; }
.step .divs { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.divbtn { flex: 1 1 150px; max-width: 240px; font: inherit; text-align: left; cursor: pointer; background: color-mix(in srgb, var(--fg) 10%, transparent); color: inherit; border: 1px solid color-mix(in srgb, var(--fg) 28%, transparent); border-radius: 3px; padding: 9px 12px; transition: transform .15s ease, background .15s ease; }
.divbtn:hover { transform: translateY(-2px); background: color-mix(in srgb, var(--fg) 18%, transparent); }
.divbtn b { display: block; font-family: var(--font-display); font-weight: 400; font-size: 17px; letter-spacing: .03em; line-height: 1.25; }
.divbtn span { font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; opacity: .85; }
.zig-note { text-align: center; color: var(--muted); font-size: 14px; max-width: 60ch; margin: 6px auto 0; }
.symstrip { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin-top: 24px; }
.symstrip button { background: none; border: 1px solid var(--rule); border-radius: 50%; padding: 8px; cursor: pointer; color: var(--t1); }
.symstrip button:hover { color: var(--lapis); border-color: var(--lapis); }
.index { margin-top: 40px; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 0 28px; }
.index h3 { grid-column: 1 / -1; font-family: var(--font-display); font-weight: 400; letter-spacing: .14em; text-transform: uppercase; font-size: 15px; border-bottom: 1px solid var(--rule); padding-bottom: 6px; margin-top: 28px; }
.index button { font: inherit; text-align: left; background: none; border: 0; border-top: 1px solid var(--rule); padding: 12px 0; cursor: pointer; }
.index button b { font-family: var(--font-display); font-weight: 400; font-size: 18px; color: var(--lapis); }
.index button span { display: block; font-size: 15px; color: var(--muted); font-style: italic; }

/* Page heads */
.pagehead { padding-block: 18px 8px; max-width: 780px; }
.pagehead h1 { font-family: var(--font-display); font-weight: 400; font-size: clamp(32px, 5vw, 50px); letter-spacing: .03em; margin: 4px 0 6px; line-height: 1.1; text-wrap: balance; }
.pagehead .q { font-size: 21px; font-style: italic; margin: 0 0 12px; }
.lede { font-size: 20px; line-height: 1.5; margin: 0 0 12px; }
.pagehead p { margin: 0 0 12px; }
.divhero { max-width: 780px; }
.sec { padding-block: 22px 6px; border-top: 1px solid var(--rule); margin-top: 18px; scroll-margin-top: 90px; }
.sec h2 { font-family: var(--font-display); font-weight: 400; font-size: 26px; letter-spacing: .02em; margin: 0 0 12px; text-wrap: balance; }
.sec p { max-width: 68ch; }

/* School page */
.schoolgrid { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 36px; align-items: start; }
.toc { position: sticky; top: 90px; display: grid; gap: 2px; font-family: var(--font-mono); font-size: 12px; letter-spacing: .04em; padding-top: 22px; }
.toc b { font-weight: 500; text-transform: uppercase; letter-spacing: .12em; color: var(--ochre); margin-bottom: 6px; }
.toc button { text-align: left; background: none; border: 0; border-left: 2px solid var(--rule); padding: 4px 10px; cursor: pointer; color: var(--muted); font: inherit; }
.toc button:hover { color: var(--lapis); border-left-color: var(--lapis); }
.body { min-width: 0; }
.body > .sec:first-child { border-top: 0; margin-top: 0; }
.ovgrid { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 24px; align-items: start; }
.ovgrid p:first-child { margin-top: 0; }
.teach { list-style: none; padding: 0; margin: 0; counter-reset: t; display: grid; gap: 14px; }
.teach li { counter-increment: t; display: grid; grid-template-columns: 40px minmax(0, 1fr); }
.teach li::before { content: counter(t, upper-roman); font-family: var(--font-display); font-size: 20px; color: var(--ochre); }
.teach h4 { margin: 0; font-family: var(--font-display); font-weight: 400; font-size: 20px; }
.teach p { margin: 2px 0 0; grid-column: 2; }
.teach li > * { grid-column: 2; }
.terms { margin: 0; display: grid; gap: 0; }
.terms > div { padding: 10px 8px; border-bottom: 1px solid var(--rule); scroll-margin-top: 90px; border-radius: 3px; }
.terms dt { font-weight: 600; }
.terms dd { margin: 2px 0 0; max-width: 68ch; }
.tl { list-style: none; padding: 0; margin: 0; border-left: 2px solid var(--lapis); }
.tl li { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 14px; padding: 8px 0 8px 16px; position: relative; }
.tl li::before { content: ""; position: absolute; left: -6px; top: 15px; width: 10px; height: 10px; border-radius: 50%; background: var(--stone); border: 2px solid var(--lapis); }
.yr { font-family: var(--font-mono); font-size: 13px; color: var(--ochre); font-variant-numeric: tabular-nums; }
.texts { padding-left: 20px; }
.texts li { margin-bottom: 6px; }
.texts a { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; margin-left: 6px; }
.works { font-size: 15px; }

/* Diagrams */
.diagram { margin: 0; }
.dgwrap { overflow-x: auto; background: var(--slab); border: 1px solid var(--rule); border-radius: 4px; padding: 12px; }
.dg { display: block; width: 100%; max-width: 760px; min-width: 420px; height: auto; margin: 0 auto; }
.dg .nd { fill: var(--stone); stroke: var(--lapis); stroke-width: 1.5; }
.dg .root { fill: var(--chip); stroke-width: 2.2; }
.dg .nt { fill: var(--ink); font-family: var(--font-body); font-size: 14px; font-weight: 600; text-anchor: middle; }
.dg .ns { fill: var(--muted); font-family: var(--font-body); font-size: 11.5px; text-anchor: middle; font-style: italic; }
.dg .nc { fill: var(--ochre); font-family: var(--font-display); font-size: 18px; text-anchor: middle; letter-spacing: .1em; }
.dg .ln { fill: none; stroke: var(--muted); stroke-width: 1.5; }
.dg .ah { fill: var(--muted); }
.diagram figcaption { font-size: 15px; color: var(--muted); margin-top: 8px; max-width: 68ch; }
.diagram figcaption b { color: var(--ink); font-weight: 600; }

/* Symbols */
.sym { color: var(--ochre); fill: none; stroke: currentColor; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.sym .f { fill: currentColor; }
.sym .b { fill: var(--stone); }
.sym text { stroke: none; fill: currentColor; }
.symgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 10px; }
.symcard { display: flex; gap: 14px; align-items: flex-start; text-align: left; font: inherit; background: var(--slab); border: 1px solid var(--rule); border-radius: 4px; padding: 12px; cursor: pointer; }
.symcard:hover { border-color: var(--ochre); }
.symcard b { display: block; font-family: var(--font-display); font-weight: 400; font-size: 18px; }
.symcard .tag { font-family: var(--font-mono); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.symcard p { margin: 4px 0 0; font-size: 15px; }
.symcard .sym .b, .symgallery .sym .b { fill: var(--slab); }
.symgallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; margin-top: 18px; }
.symgallery button { display: grid; justify-items: center; gap: 4px; text-align: center; font: inherit; background: var(--slab); border: 1px solid var(--rule); border-radius: 4px; padding: 14px 8px; cursor: pointer; }
.symgallery button:hover { border-color: var(--ochre); }
.symgallery b { font-family: var(--font-display); font-weight: 400; font-size: 16px; line-height: 1.25; }
.symgallery span, .symgallery em { font-family: var(--font-mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); font-style: normal; }
.symhead { display: flex; gap: 28px; align-items: center; flex-wrap: wrap; padding-top: 12px; }
.uses { list-style: none; padding: 0; margin: 0; }
.uses li { border-bottom: 1px solid var(--rule); padding: 10px 0; }
.uses p { margin: 4px 0 0; }

/* Schools list */
.schools { display: grid; border-top: 2px solid var(--ink); }
.school { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 12px 24px; align-items: start; padding-block: 20px; border-bottom: 1px solid var(--rule); }
.school h3 { font-family: var(--font-display); font-weight: 400; font-size: 26px; margin: 2px 0 6px; }
.school h3 .lnk { color: var(--ink); }
.school h3 .lnk:hover { color: var(--lapis); }
.school p { margin: 0 0 10px; max-width: 65ch; }
.side { display: grid; justify-items: end; gap: 10px; }
.faces { display: flex; }
.faces button { border: 0; padding: 0; background: none; cursor: pointer; margin-left: -10px; }
.faces button:first-child { margin-left: 0; }
.open { font: inherit; font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; background: var(--lapis); color: var(--stone); border: 0; border-radius: 3px; padding: 8px 12px; cursor: pointer; margin-top: 12px; }

/* Portraits and images */
.portrait { --s: 56px; width: var(--s); height: var(--s); border-radius: 50%; overflow: hidden; flex: none; background: var(--chip); border: 2px solid var(--stone); display: grid; place-items: center; font-family: var(--font-display); color: var(--lapis); font-size: calc(var(--s) * .36); max-width: 100%; }
.portrait img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 22%; display: block; }
.portrait.md { --s: 96px; border-radius: 4px; }
.portrait.lg { --s: 132px; border-radius: 4px; border: 1px solid var(--rule); }
.portrait.xl { --s: 220px; border-radius: 4px; border: 1px solid var(--rule); }
.portrait.hero { width: 100%; height: auto; aspect-ratio: 4 / 3; border-radius: 4px; border: 1px solid var(--rule); font-size: 48px; display: none; }
.portrait.hero.has-img { display: block; }
.portrait.hero img { object-fit: cover; object-position: 50% 35%; }
.divhero .portrait.hero { aspect-ratio: 21 / 9; margin-top: 12px; }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.gallery figure { margin: 0; }
.gallery img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 4px; border: 1px solid var(--rule); display: block; background: var(--chip); }
.gallery figcaption { font-size: 13px; color: var(--muted); margin-top: 4px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* Thinkers */
.thinkers { display: grid; }
.thinker { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 20px; padding-block: 20px; border-bottom: 1px solid var(--rule); }
.thinker.one { grid-template-columns: minmax(0, 1fr); }
.thinker h3 { font-family: var(--font-display); font-weight: 400; font-size: 25px; margin: 0; }
.thinker h3 .lnk { color: var(--ink); }
.thinker h3 .lnk:hover { color: var(--lapis); }
.meta { font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; color: var(--ochre); text-transform: uppercase; font-variant-numeric: tabular-nums; margin: 2px 0 10px; }
.path-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0; }
.thinker p { margin: 2px 0 12px; max-width: 65ch; }
.also { font-size: 15px; color: var(--muted); margin-top: 8px; }
.person { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 28px; padding-block: 18px; }
.extract { max-width: 68ch; }
.mindgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; margin-top: 18px; }
.mindgrid button { display: grid; justify-items: center; text-align: center; gap: 2px; font: inherit; background: none; border: 0; cursor: pointer; padding: 6px; border-radius: 4px; }
.mindgrid button:hover { background: var(--slab); }
.mindgrid b { font-family: var(--font-display); font-weight: 400; font-size: 16px; line-height: 1.25; margin-top: 6px; }
.mindgrid span { font-size: 12px; color: var(--muted); line-height: 1.3; }

/* Reference, glossary, timeline */
.kinds { display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0; }
.kind { font-family: var(--font-mono); font-size: 12px; letter-spacing: .06em; text-transform: uppercase; background: var(--slab); border: 1px solid var(--rule); border-radius: 999px; padding: 5px 12px; cursor: pointer; }
.kind.on { background: var(--lapis); color: var(--stone); border-color: var(--lapis); }
.az { display: flex; flex-wrap: wrap; gap: 2px; position: sticky; top: 68px; background: var(--stone); padding-block: 8px; z-index: 2; border-bottom: 1px solid var(--rule); }
.az button { font-family: var(--font-display); font-size: 17px; background: none; border: 0; padding: 4px 8px; cursor: pointer; color: var(--lapis); }
.azsec { scroll-margin-top: 130px; }
.azsec h2 { font-family: var(--font-display); font-weight: 400; font-size: 34px; color: var(--ochre); margin: 22px 0 6px; }
.azlist { list-style: none; padding: 0; margin: 0; columns: 2 320px; column-gap: 32px; }
.azlist li { break-inside: avoid; }
.azlist button { display: block; width: 100%; text-align: left; font: inherit; background: none; border: 0; border-bottom: 1px solid var(--rule); padding: 7px 0; cursor: pointer; }
.azlist button:hover b { color: var(--lapis); }
.azlist b { font-weight: 600; }
.kindtag { font-family: var(--font-mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; color: var(--ochre); margin-left: 6px; }
.azlist .sub { display: block; text-transform: none; font-family: var(--font-body); font-size: 14px; letter-spacing: 0; }
.tl.big li { grid-template-columns: 160px minmax(0, 1fr); }
.tl.big .sub { margin-left: 6px; }
.tl.big .sub .lnk { font: inherit; text-transform: uppercase; color: var(--lapis); }

.foot { border-top: 1px solid var(--rule); color: var(--muted); font-size: 13px; padding-block: 18px; }

@media (max-width: 900px) {
  .schoolgrid { grid-template-columns: minmax(0, 1fr); }
  .toc { position: static; display: flex; flex-wrap: wrap; gap: 4px; padding-top: 8px; }
  .toc b { width: 100%; }
  .toc button { border: 1px solid var(--rule); border-radius: 999px; padding: 3px 10px; }
  .ovgrid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .step { width: calc(var(--w) * .35 + 65%); }
  .divbtn { flex-basis: 120px; }
  .divbtn b { font-size: 15px; }
  .school { grid-template-columns: minmax(0, 1fr); }
  .side { justify-items: start; }
  .thinker, .person { grid-template-columns: minmax(0, 1fr); }
  .portrait.lg { --s: 112px; }
  .portrait.xl { --s: 170px; }
  .tl li, .tl.big li { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .top { position: static; }
  .az { top: 0; }
  .toc { padding-top: 0; }
  .dg { min-width: 520px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }

/* ---------- Library ---------- */
.books { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 8px; }
.book { display: grid; grid-template-columns: 46px 1fr; gap: 12px; align-items: start; padding: 10px 12px; border: 1px solid var(--rule); border-radius: 8px; background: var(--slab); }
.book .bk { font-family: var(--font-mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; text-align: center; padding: 6px 0; border-radius: 4px; background: var(--t2); color: #fff; }
.book.has .bk { background: var(--apex); }
.book .tag { font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; letter-spacing: .06em; color: var(--lapis); margin-left: 6px; }
.links.small a { font-size: 11px; }
.book a.pdf { font-weight: 600; }
.libschool { border-bottom: 1px solid var(--rule); padding: 8px 0; }
.libschool summary { cursor: pointer; font-size: 17px; }
.libfilter { width: 100%; max-width: 420px; margin-top: 14px; padding: 10px 12px; font: inherit; border: 1px solid var(--rule); border-radius: 8px; background: var(--slab); color: var(--ink); }
.libnote { color: var(--muted); margin: 4px 0 0; }