/* Everything the markdown containers render to: boxes, side notes, pull quotes, figures, tables, code. */

/* ---------- glossary terms and cross references ---------- */
a.term { color: inherit; text-decoration: underline dotted var(--faint); text-decoration-thickness: 1.5px; text-underline-offset: 4px; cursor: help; }
a.term:hover, a.term.open { text-decoration-color: var(--k-vec); background: color-mix(in srgb, var(--k-vec) 12%, transparent); border-radius: 3px; }
a.xr { font-family: var(--f-mono); font-size: .76em; text-decoration: none; color: var(--ink); background: var(--bg-3); border: 1px solid var(--rule); border-radius: 5px; padding: .04em .4em; white-space: nowrap; }
a.xr:hover { border-color: var(--k-vec); color: var(--k-vec); }
a.xr.read::after, a.xr-inline.read::after { content: " ✓"; color: var(--k-dec); font-size: .85em; }
a.xr-inline { text-decoration-style: solid; }

/* ---------- boxes ---------- */
.box { border-radius: 12px; padding: 1.05rem 1.25rem; margin: 1.8rem 0; background: var(--bg-2); border: 1px solid var(--rule); position: relative; --bc: var(--muted); }
.box > .label { display: block; margin-bottom: .4rem; color: var(--bc); }
.box > :last-child, .box > :last-child > :last-child { margin-bottom: 0; }
.box-note { --bc: var(--k-book); border-left: 3px solid var(--k-book); border-radius: 4px 12px 12px 4px; }
.box-key { --bc: var(--k-vec); border-color: color-mix(in srgb, var(--k-vec) 45%, var(--rule)); background: linear-gradient(135deg, color-mix(in srgb, var(--k-vec) 9%, var(--bg-2)), var(--bg-2) 60%); }
.box-practice { --bc: var(--k-enc); border-color: color-mix(in srgb, var(--k-enc) 40%, var(--rule)); }
.box-warn { --bc: var(--k-res); border-color: color-mix(in srgb, var(--k-res) 45%, var(--rule)); }
.box-measured { --bc: var(--k-bits); border-color: color-mix(in srgb, var(--k-bits) 40%, var(--rule)); background: linear-gradient(135deg, color-mix(in srgb, var(--k-bits) 7%, var(--bg-2)), var(--bg-2) 55%); }
.box-measured > .label::before { content: "▮▮▯ "; letter-spacing: 0; }
.box-try { --bc: var(--k-q); border: 1px dashed color-mix(in srgb, var(--k-q) 60%, var(--rule)); }
.box-try > .label::before { content: "☞ "; }
.box-try ol, .box-try ul { margin-bottom: 0; }
.box-check, .box-recap { --bc: var(--k-dec); border: 1px dashed color-mix(in srgb, var(--k-dec) 55%, var(--rule)); background: color-mix(in srgb, var(--k-dec) 5%, var(--bg)); }
.box-check ul, .box-recap ul { list-style: none; padding: 0; margin: .2rem 0 0; display: grid; gap: .35rem; }
.box-check li, .box-recap li { padding-left: 1.6rem; position: relative; margin: 0; }
.box-check li::before, .box-recap li::before { content: "✓"; position: absolute; left: 0; color: var(--k-dec); font-weight: 700; font-family: var(--f-mono); }

/* side notes: in the margin on wide screens, inline cards otherwise */
.sn { font-size: .92rem; line-height: 1.5; color: var(--muted); display: block; margin: 1.2rem 0; padding: .7rem .95rem; border-left: 3px solid var(--k-q); background: var(--bg-2); border-radius: 0 8px 8px 0; }
.sn b, .sn strong { color: var(--ink); }
.sn .label { color: var(--k-q); display: block; margin-bottom: .2rem; }
.sn p { margin: 0 0 .5em; } .sn p:last-child { margin: 0; }

/* magazine cut-in */
.pull { font-family: var(--f-display); font-weight: 800; font-size: clamp(1.45rem, 1.1rem + 1.6vw, 2.05rem); line-height: 1.16; letter-spacing: -.02em; color: var(--ink);
  margin: 2.4rem 0; padding: 0 0 0 1.3rem; border-left: 6px solid; border-image: linear-gradient(var(--k-book), var(--k-code), var(--k-vec)) 1; text-wrap: balance; }
.pull p { margin: 0; }
.pull p + p { font-family: var(--f-body); font-weight: 400; font-size: 1rem; color: var(--muted); margin-top: .55rem; letter-spacing: 0; line-height: 1.5; }
.lede { font-size: 1.22rem; line-height: 1.55; color: var(--ink); }
.lede p:first-child::first-letter { font-family: var(--f-display); font-weight: 800; font-size: 3.3em; float: left; line-height: .82; padding: .08em .12em 0 0; color: var(--pc); }

/* Q&A */
.qa { background: var(--bg-2); border: 1px solid var(--rule); border-radius: 12px; padding: 1.1rem 1.25rem; margin: 1.8rem 0; }
.qa .ask { font-family: var(--f-display); font-weight: 600; font-size: 1.16rem; line-height: 1.3; color: var(--ink); margin-bottom: .6rem; padding-left: 2rem; position: relative; }
.qa .ask::before { content: "Q"; position: absolute; left: 0; top: .05em; font-family: var(--f-mono); font-size: .78rem; font-weight: 700; color: var(--bg); background: var(--k-enc); border-radius: 5px; padding: .05rem .38rem; }
.qa > :last-child { margin-bottom: 0; }

/* collapsible derivations */
details.deep { margin: 1.5rem 0; border: 1px solid var(--rule); border-radius: 10px; background: var(--bg-2); }
details.deep > summary { cursor: pointer; padding: .7rem 1rem; font-family: var(--f-mono); font-size: .8rem; color: var(--k-q); list-style: none; display: flex; gap: .6rem; align-items: center; }
details.deep > summary::-webkit-details-marker { display: none; }
details.deep > summary::before { content: "▸"; transition: transform .2s; }
details.deep[open] > summary::before { transform: rotate(90deg); }
details.deep > div { padding: 0 1.1rem 1rem; font-size: 1.04rem; }
details.deep > div > :last-child { margin-bottom: 0; }

/* the running story */
.story { margin: 2rem 0; padding: 1.1rem 1.2rem; border-radius: 14px; background: var(--bg-2); border: 1px solid var(--rule); box-shadow: inset 4px 0 0 0 var(--k-code); }
.story .who { display: flex; align-items: center; gap: .65rem; margin-bottom: .6rem; }
.story .av { width: 2.1rem; height: 2.1rem; border-radius: 50%; display: grid; place-items: center; font-family: var(--f-display); font-weight: 800; color: #10131a; background: conic-gradient(from 200deg, var(--k-code), var(--k-vec), var(--k-dec), var(--k-book), var(--k-code)); flex: none; }
.story .nm { font-family: var(--f-display); font-weight: 600; color: var(--ink); font-size: 1rem; line-height: 1.1; }
.story .nm small { display: block; font-family: var(--f-mono); font-weight: 400; font-size: .7rem; color: var(--muted); letter-spacing: .05em; margin-top: .15rem; }
.story p { font-size: 1.06rem; } .story p:last-child { margin-bottom: 0; }

/* stat tiles: a list whose items start with a bold number */
.stats ul { list-style: none; padding: 0; margin: 1.5rem 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr)); gap: .6rem; }
.stats li { background: var(--bg-2); border: 1px solid var(--rule); border-radius: 10px; padding: .75rem .9rem; font-size: .84rem; color: var(--muted); line-height: 1.3; margin: 0; }
.stats li > strong:first-child, .stats li > span:first-child { display: block; font-family: var(--f-display); font-weight: 800; font-size: 1.55rem; line-height: 1.1; font-variant-numeric: tabular-nums; margin-bottom: .2rem; }
.stats li > strong:first-child:not([class]) { color: var(--ink); }

/* cards: a list whose items start with a bold title */
.cards ul { list-style: none; padding: 0; margin: 1.5rem 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: .8rem; }
.cards li { background: var(--bg-2); border: 1px solid var(--rule); border-top: 3px solid var(--pc); border-radius: 10px; padding: .9rem 1rem; font-size: .96rem; line-height: 1.5; margin: 0; }
.cards li > strong:first-child { display: block; font-family: var(--f-display); font-size: 1.1rem; margin-bottom: .3rem; }
.cards li > p { margin: 0 0 .5em; } .cards li > p:first-child > strong:first-child { display: block; font-family: var(--f-display); font-size: 1.1rem; margin-bottom: .3rem; }
.cards li ul { display: block; margin: .4rem 0 0; padding-left: 1.1rem; list-style: disc; }
.cards li li { background: none; border: 0; padding: 0; font-size: .92rem; margin-bottom: .2rem; }
.cards.three li:nth-child(3n+1) { border-top-color: var(--k-book); } .cards.three li:nth-child(3n+2) { border-top-color: var(--k-vec); } .cards.three li:nth-child(3n) { border-top-color: var(--k-dec); }
.cards.four li:nth-child(4n+1) { border-top-color: var(--k-book); } .cards.four li:nth-child(4n+2) { border-top-color: var(--k-code); } .cards.four li:nth-child(4n+3) { border-top-color: var(--k-res); } .cards.four li:nth-child(4n) { border-top-color: var(--k-bits); }
.cards em:first-child { font-style: normal; font-family: var(--f-mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); display: block; }

/* numbered path */
.steps ol { list-style: none; counter-reset: st; padding: 0; display: grid; gap: .7rem; }
.steps ol > li { counter-increment: st; position: relative; padding-left: 2.8rem; margin: 0; }
.steps ol > li::before { content: counter(st, decimal-leading-zero); position: absolute; left: 0; top: .28rem; font-family: var(--f-mono); font-size: .8rem; color: var(--pc); font-weight: 700; }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 0 1.6rem; }

/* scorecard strip */
.score { display: flex; flex-wrap: wrap; gap: .45rem; margin: 1.4rem 0 1.8rem; align-items: center; }
.score .who { font-family: var(--f-mono); font-size: .74rem; color: var(--ink); margin-right: .3rem; letter-spacing: .05em; font-weight: 700; text-transform: uppercase; }
.pill { font-family: var(--f-mono); font-size: .7rem; border: 1px solid var(--rule); border-radius: 999px; padding: .18rem .62rem; color: var(--muted); white-space: nowrap; background: var(--bg-2); }
.pill b { font-weight: 700; }
.pill.good b { color: var(--k-dec); } .pill.ok b { color: var(--k-enc); } .pill.bad b { color: var(--k-res); }
.pill.good::before { content: "● "; color: var(--k-dec); } .pill.ok::before { content: "◐ "; color: var(--k-enc); } .pill.bad::before { content: "○ "; color: var(--k-res); }
.legend { display: flex; flex-wrap: wrap; gap: .45rem .5rem; margin: 1rem 0; }
.chip { font-family: var(--f-mono); font-size: .72rem; border-radius: 999px; padding: .22rem .65rem .22rem .5rem; display: inline-flex; align-items: center; gap: .4rem; background: var(--bg-2); border: 1px solid var(--rule); }
.chip i { width: .62rem; height: .62rem; border-radius: 50%; background: currentColor; display: inline-block; }
.chip span { color: var(--ink); }

/* ---------- figures ---------- */
figure.fig { margin: 2.2rem auto 2.6rem; clear: both; max-width: var(--col); }
figure.fig.wide { max-width: calc(var(--col) + 14rem); margin-inline: calc((100% - min(100%, var(--col) + 14rem)) / 2); }
.page > .prose figure.fig.wide { width: min(100vw - 36px, var(--col) + 14rem); margin-left: 50%; transform: translateX(-50%); }
.stage { background: radial-gradient(ellipse at 50% 35%, var(--glow), transparent 70%), var(--bg-2); border: 1px solid var(--rule); border-radius: 12px; overflow: hidden; position: relative; }
.stage.widget:empty { min-height: 16rem; }
.stage.widget:empty::after { content: "loading figure…"; position: absolute; inset: 0; display: grid; place-items: center; font-family: var(--f-mono); font-size: .76rem; color: var(--faint); }
canvas { display: block; width: 100%; touch-action: none; }
canvas.drag { cursor: grab; } canvas.drag:active { cursor: grabbing; }
figcaption { font-size: .98rem; color: var(--muted); margin-top: .75rem; line-height: 1.5; max-width: var(--col); }
figcaption p { display: inline; margin: 0; }
figcaption .fn { font-family: var(--f-mono); font-size: .7rem; color: var(--ink); background: var(--bg-3); border-radius: 4px; padding: .05rem .35rem; margin-right: .5rem; }
figcaption p > strong:first-child { font-family: var(--f-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: var(--k-vec); margin-right: .4rem; font-weight: 500; }
.controls { display: flex; flex-wrap: wrap; gap: .6rem 1rem; align-items: center; padding: .75rem 1rem; border-top: 1px solid var(--rule); background: var(--bg-3); }
.controls label { font-family: var(--f-mono); font-size: .76rem; color: var(--muted); display: flex; align-items: center; gap: .5rem; }
.controls output, .controls .val { font-family: var(--f-mono); font-size: .78rem; color: var(--ink); font-variant-numeric: tabular-nums; min-width: 2.5rem; }
.controls input[type=range] { width: 9rem; accent-color: var(--k-vec); }
.controls select { font: 500 .76rem var(--f-mono); color: var(--ink); background: var(--bg-2); border: 1px solid var(--rule); border-radius: 7px; padding: .35rem .5rem; }
.readout { font-family: var(--f-mono); font-size: .79rem; color: var(--ink); padding: .65rem 1rem; border-top: 1px solid var(--rule); background: var(--bg-3); line-height: 1.65; min-height: 2.6rem; }
.readout b { font-weight: 700; }
.readout .dim, .dim { color: var(--muted); }
button.btn { font: 500 .76rem var(--f-mono); color: var(--ink); background: var(--bg-2); border: 1px solid var(--rule); border-radius: 7px; padding: .42rem .75rem; cursor: pointer; }
button.btn:hover { border-color: var(--muted); }
button.btn[aria-pressed="true"] { border-color: var(--k-vec); color: var(--k-vec); background: color-mix(in srgb, var(--k-vec) 10%, var(--bg-2)); }
.seg { display: inline-flex; flex-wrap: wrap; }
.seg .btn { border-radius: 0; } .seg .btn:first-child { border-radius: 7px 0 0 7px; } .seg .btn:last-child { border-radius: 0 7px 7px 0; } .seg .btn + .btn { margin-left: -1px; }
.two { display: grid; grid-template-columns: 1.5fr 1fr; }
.two.even { grid-template-columns: 1fr 1fr; }
.two > * { min-width: 0; }
.two > .side { border-left: 1px solid var(--rule); }
@media (max-width: 760px) { .two, .two.even { grid-template-columns: 1fr; } .two > .side { border-left: 0; border-top: 1px solid var(--rule); } }
.snip { font-family: var(--f-body); font-size: .98rem; color: var(--ink-2); padding: .8rem 1rem; border-top: 1px solid var(--rule); background: var(--bg-3); min-height: 5.6rem; line-height: 1.5; }
.snip .tag { font-family: var(--f-mono); font-size: .7rem; letter-spacing: .06em; margin-right: .4rem; }
.sidepanel { padding: 1rem; display: grid; gap: .9rem; align-content: start; font-size: .9rem; font-family: var(--f-display); }
.sidepanel .ctl { display: grid; gap: .25rem; }
.sidepanel .ctl label { display: flex; justify-content: space-between; font-family: var(--f-mono); font-size: .74rem; color: var(--muted); }
.sidepanel .ctl output { color: var(--ink); }
.sidepanel input[type=range] { width: 100%; accent-color: var(--k-vec); }
.sidepanel .note { font-size: .86rem; color: var(--ink-2); background: var(--bg-3); border-radius: 8px; padding: .6rem .7rem; line-height: 1.45; }
.kv { display: grid; grid-template-columns: auto 1fr; gap: .25rem .8rem; font-size: .84rem; margin: 0; }
.kv dt { color: var(--muted); } .kv dd { margin: 0; font-family: var(--f-mono); font-variant-numeric: tabular-nums; text-align: right; color: var(--ink); }
.nb-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .2rem; font-size: .88rem; }
.nb-list li { display: flex; justify-content: space-between; gap: .5rem; border-bottom: 1px dotted var(--rule); padding: .12rem 0; }
.nb-list span:last-child { font-family: var(--f-mono); color: var(--muted); font-size: .78rem; }
.meter { height: 6px; background: var(--bg-3); border-radius: 3px; overflow: hidden; }
.meter span { display: block; height: 100%; background: var(--k-vec); width: 0; transition: width .2s; }

/* svg diagrams and charts */
.diawrap { overflow-x: auto; padding: 1rem; }
.diawrap > svg { min-width: 36rem; width: 100%; height: auto; display: block; }
svg.dia, svg.chart { width: 100%; height: auto; display: block; }
svg.dia text, svg.chart text, .diawrap svg text { font-family: var(--f-mono); fill: var(--muted); font-size: 12px; }
svg .t-ink { fill: var(--ink) !important; } svg .t-big { font-size: 15px !important; fill: var(--ink) !important; font-family: var(--f-display) !important; font-weight: 600; }
svg .t-hand { font-family: var(--f-hand) !important; font-size: 19px !important; }
svg .box { fill: var(--bg-3); stroke: var(--rule); }
svg .ln { stroke: var(--faint); fill: none; stroke-width: 1.5; }
svg .grid { stroke: var(--rule); stroke-width: 1; }
svg .axis { stroke: var(--faint); stroke-width: 1; }
.chartwrap { padding: .7rem .5rem .3rem; position: relative; }
.chart-title { font-family: var(--f-display); font-weight: 600; font-size: .98rem; color: var(--ink); padding: .8rem 1rem 0; }
.chart-sub { font-family: var(--f-mono); font-size: .72rem; color: var(--muted); padding: .1rem 1rem 0; }
.clegend { display: flex; flex-wrap: wrap; gap: .3rem 1rem; padding: .5rem 1rem 0; font-family: var(--f-mono); font-size: .72rem; color: var(--ink-2); }
.clegend i { display: inline-block; width: .7rem; height: .7rem; border-radius: 2px; margin-right: .35rem; vertical-align: -1px; }
.clegend i.line { height: 3px; width: 1rem; border-radius: 2px; vertical-align: 3px; }
.clegend button { all: unset; cursor: pointer; } .clegend button[aria-pressed="false"] { opacity: .4; }
.tip { position: absolute; pointer-events: none; z-index: 5; font-family: var(--f-mono); font-size: .72rem; line-height: 1.5; background: var(--bg-3); color: var(--ink); border: 1px solid var(--rule); border-radius: 8px; padding: .4rem .6rem; box-shadow: var(--shadow); white-space: nowrap; opacity: 0; transition: opacity .1s; }
.tip.on { opacity: 1; }
.tip b { font-weight: 700; } .tip i { display: inline-block; width: .6rem; height: .6rem; border-radius: 2px; margin-right: .35rem; }

/* math */
.math { overflow-x: auto; overflow-y: hidden; margin: 1.3rem 0; padding: .3rem 0; color: var(--ink); }
.katex { font-size: 1.04em; }
.katex-display { margin: .4em 0 !important; }

/* code */
.codehead { font-family: var(--f-mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); display: flex; justify-content: space-between; margin: 1.6rem 0 -.9rem; padding: 0 .2rem; }
.codehead span:first-child { color: var(--k-bits); }
pre.code { background: var(--bg-2); border: 1px solid var(--rule); border-radius: 10px; padding: 1rem 1.1rem; overflow-x: auto; font-family: var(--f-mono); font-size: .8rem; line-height: 1.62; margin: 1.3rem 0 1.6rem; color: var(--ink-2); tab-size: 4; }
pre.code code { font-size: inherit; background: none; padding: 0; color: inherit; }
pre.code .c, pre.code .c1, pre.code .cm, pre.code .sd { color: var(--muted); font-style: italic; }
pre.code .k, pre.code .kn, pre.code .kc, pre.code .kd, pre.code .ow, pre.code .nb, pre.code .bp { color: var(--k-book); }
pre.code .nf, pre.code .fm, pre.code .nc { color: var(--k-vec); }
pre.code .mi, pre.code .mf, pre.code .mh, pre.code .mo { color: var(--k-enc); }
pre.code .s, pre.code .s1, pre.code .s2, pre.code .sa, pre.code .si, pre.code .se { color: var(--k-dec); }
pre.code .o, pre.code .p { color: var(--muted); }
pre.code .nd { color: var(--k-code); }

/* tables */
.tablewrap { overflow-x: auto; margin: 1.4rem 0 2rem; border: 1px solid var(--rule); border-radius: 12px; background: var(--bg-2); }
.wide > .tablewrap, .wide { width: min(100vw - 36px, var(--col) + 14rem); margin-left: 50%; transform: translateX(-50%); }
.wide > .tablewrap { width: 100%; margin-left: 0; transform: none; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; line-height: 1.45; }
th, td { text-align: left; padding: .6rem .8rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-family: var(--f-mono); font-weight: 500; font-size: .68rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); background: var(--bg-3); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td:first-child { font-weight: 600; color: var(--ink); }
td.num, td[style*="right"] { font-family: var(--f-mono); font-variant-numeric: tabular-nums; font-size: .82rem; white-space: nowrap; }
tr.hl td { background: color-mix(in srgb, var(--k-vec) 7%, transparent); }
td .g, .g { color: var(--k-dec); font-weight: 600; } td .o, .o { color: var(--k-enc); font-weight: 600; } td .b, .bad { color: var(--k-res); font-weight: 600; }
.bar { display: inline-block; height: .55rem; border-radius: 3px; vertical-align: middle; margin-left: .45rem; }

@media (min-width: 1280px) {
  .sn { float: right; clear: right; width: var(--sn); margin: .35rem calc(-1 * (var(--sn) + var(--gap))) 1rem 0; padding: .1rem 0 .1rem .9rem; border-left: 2px solid var(--k-q); background: none; border-radius: 0; font-size: .86rem; }
  figure.fig.wide, .page > .prose figure.fig.wide, .wide { width: calc(var(--col) + var(--sn) + var(--gap)); max-width: none; margin-left: 0; margin-right: 0; transform: none; }
  .box .sn, .qa .sn, details .sn, li .sn { float: none; width: auto; margin: 1rem 0; }
}

/* ---------- glossary page ---------- */
.gl-tools { display: flex; gap: 1rem; align-items: center; margin-bottom: 1rem; position: sticky; top: calc(var(--bar) + .4rem); z-index: 3; background: var(--bg); padding: .5rem 0; }
#gl-filter, #toc-q { flex: 1; font: 500 .95rem var(--f-display); color: var(--ink); background: var(--bg-2); border: 1px solid var(--rule); border-radius: 10px; padding: .6rem .9rem; min-width: 0; }
#gl-count { font-family: var(--f-mono); font-size: .72rem; color: var(--muted); white-space: nowrap; }
dl.gloss { margin: 0; display: grid; gap: .5rem; }
.gl-item { border: 1px solid var(--rule); border-radius: 10px; background: var(--bg-2); padding: .7rem 1rem; scroll-margin-top: 7rem; }
.gl-item:target { border-color: var(--k-vec); box-shadow: 0 0 0 3px color-mix(in srgb, var(--k-vec) 22%, transparent); }
.gl-item dt { font-family: var(--f-display); font-weight: 600; font-size: 1.08rem; color: var(--ink); display: flex; flex-wrap: wrap; gap: .2rem .7rem; align-items: baseline; }
.gl-item dt small { font-family: var(--f-mono); font-weight: 400; font-size: .7rem; color: var(--muted); }
.gl-item dt .seen { font-family: var(--f-mono); font-size: .66rem; color: var(--k-dec); margin-left: auto; }
.gl-item dd { margin: .25rem 0 0; font-size: .98rem; line-height: 1.5; }
.gl-item dd p { margin: 0 0 .4em; } .gl-item dd .where { font-size: .84rem; color: var(--muted); margin: .3rem 0 0; }

/* ---------- cover ---------- */
[data-layout~="cover"] .ch-head { display: none; }
[data-layout~="cover"] .done-row { display: none; }
.hero { padding: 2.2rem 0 1rem; }
.hero .kicker { font-family: var(--f-mono); font-size: .76rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.hero .kicker b { font-weight: 500; }
.hero h1 { font-size: clamp(3rem, 1.6rem + 7vw, 6rem); font-weight: 800; letter-spacing: -.04em; margin: .6rem 0 1rem; line-height: .95; }
.hero h1 .g { background: linear-gradient(92deg, var(--k-book), var(--k-code) 45%, var(--k-vec) 90%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .dek { font-size: 1.36rem; color: var(--ink); line-height: 1.45; }
.hero .byline { margin-top: 1.1rem; font-family: var(--f-mono); font-size: .76rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: .3rem 1.2rem; }
.cta { display: flex; flex-wrap: wrap; gap: .7rem; margin: 1.6rem 0 0; }
.cta a { font: 600 .86rem var(--f-mono); text-decoration: none; padding: .7rem 1.15rem; border-radius: 999px; border: 1px solid var(--rule); color: var(--ink); background: var(--bg-2); }
.cta a.primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.cta a:hover { border-color: var(--k-vec); }
#continue { margin: 1.4rem 0 0; }
.partgrid { display: grid; gap: .9rem; margin: 1.6rem 0; }
.partcard { border: 1px solid var(--rule); border-left: 4px solid var(--c); border-radius: 12px; background: var(--bg-2); padding: 1rem 1.15rem; scroll-margin-top: 5rem; }
.partcard h3 { font-size: 1.25rem; font-weight: 800; letter-spacing: -.01em; display: flex; gap: .7rem; align-items: baseline; flex-wrap: wrap; }
.partcard h3 .pn { font-family: var(--f-mono); font-size: .7rem; font-weight: 700; color: var(--c); letter-spacing: .1em; text-transform: uppercase; }
.partcard h3 .pp { margin-left: auto; font-family: var(--f-mono); font-size: .7rem; font-weight: 500; color: var(--muted); }
.partcard .blurb { font-size: .98rem; color: var(--muted); margin: .25rem 0 .7rem; line-height: 1.45; }
.partcard ol { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(15.5rem, 1fr)); gap: .15rem .9rem; }
.partcard li { margin: 0; }
.partcard li a { display: grid; grid-template-columns: 1.1rem 2.1rem 1fr; gap: .3rem; align-items: baseline; text-decoration: none; color: var(--ink-2); font-family: var(--f-display); font-size: .94rem; padding: .22rem .3rem; border-radius: 6px; line-height: 1.25; }
.partcard li a:hover { background: var(--bg-3); color: var(--ink); }
.partcard li a .n { font-family: var(--f-mono); font-size: .7rem; color: var(--c); font-weight: 700; }
.tickbox { width: .8rem; height: .8rem; border-radius: 50%; border: 1.5px solid var(--faint); display: inline-block; transform: translateY(.08rem); }
.read > .tickbox, .tickbox.read { background: var(--k-dec); border-color: var(--k-dec); box-shadow: inset 0 0 0 2px var(--bg-2); }
.seen > .tickbox { border-color: var(--k-vec); background: linear-gradient(90deg, var(--k-vec) 50%, transparent 50%); }

/* ---------- playgrounds ported from the field guide (canvas + side panel) ---------- */
.play { display: grid; gap: 0; }
.play-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .4rem 1rem; align-items: baseline; padding: .8rem 1rem; border-bottom: 1px solid var(--rule); }
.play-head h4 { font-family: var(--f-display); font-weight: 600; font-size: 1.02rem; margin: 0; text-transform: none; letter-spacing: 0; color: var(--ink); }
.play-head .eyebrow { font-family: var(--f-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--k-vec); }
.play-body { display: grid; grid-template-columns: 1fr; }
@media (min-width: 820px) { .play-body { grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr); } .play-body > .side { border-left: 1px solid var(--rule); } }
.play-body > * { min-width: 0; }
.play-body > div:first-child { padding: .6rem; }
.play canvas { border-radius: 8px; cursor: crosshair; }
.play .side { display: grid; gap: .9rem; align-content: start; font-size: .88rem; padding: 1rem; font-family: var(--f-display); border-top: 1px solid var(--rule); }
@media (min-width: 820px) { .play .side { border-top: 0; } }
.play .seg { display: flex; flex-wrap: wrap; gap: .35rem; }
.play .seg button, .play .btn { font: 500 .74rem var(--f-mono); border: 1px solid var(--rule); background: var(--bg-2); color: var(--ink); padding: .4rem .7rem; border-radius: 7px; cursor: pointer; margin: 0; }
.play .seg button[aria-pressed="true"] { border-color: var(--k-vec); color: var(--k-vec); background: color-mix(in srgb, var(--k-vec) 10%, var(--bg-2)); }
.play .seg button:hover, .play .btn:hover { border-color: var(--muted); }
.play .ctl { display: grid; gap: .25rem; }
.play .ctl label { display: flex; justify-content: space-between; font-family: var(--f-mono); font-size: .74rem; color: var(--muted); }
.play .ctl output { color: var(--ink); font-variant-numeric: tabular-nums; }
.play input[type=range] { width: 100%; accent-color: var(--k-vec); }
.play select { font: 500 .8rem var(--f-mono); padding: .3rem .5rem; border: 1px solid var(--rule); border-radius: 6px; background: var(--bg-2); color: var(--ink); }
.play .stat { display: grid; grid-template-columns: auto 1fr; gap: .25rem .8rem; font-size: .84rem; align-items: baseline; margin: 0; }
.play .stat dt { color: var(--muted); } .play .stat dd { margin: 0; font-family: var(--f-mono); font-variant-numeric: tabular-nums; text-align: right; color: var(--ink); }
.play .legend { margin: 0; gap: .3rem 1rem; font-family: var(--f-mono); font-size: .7rem; color: var(--muted); }
.play .legend i { display: inline-block; width: .7rem; height: .7rem; border-radius: 50%; margin-right: .35rem; vertical-align: -1px; }
.play .mode-note { font-size: .86rem; color: var(--ink-2); background: var(--bg-3); border-radius: 8px; padding: .6rem .7rem; line-height: 1.45; }
.play .eyebrow { font-family: var(--f-mono); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.play .small { font-size: .82rem; } .play .muted { color: var(--muted); }
.calc-top { display: flex; flex-wrap: wrap; gap: 1rem 1.6rem; align-items: end; padding: 1rem 1rem 0; }
.calc-top .ctl { min-width: 220px; flex: 1; }
.calc-head { font-family: var(--f-display); font-size: .98rem; line-height: 1.5; padding: .8rem 1rem 0; margin: 0; color: var(--ink-2); }
.calc-head b { font-family: var(--f-mono); font-weight: 500; color: var(--k-vec); }
.play > div:not(.play-head):not(.play-body):not(.calc-top) { padding: .6rem 1rem; }
.play > p.small { padding: 0 1rem 1rem; font-family: var(--f-display); }
.bars { display: grid; gap: .55rem; }
.bar-row { display: grid; grid-template-columns: minmax(0, 12rem) minmax(0, 1fr) 5.2rem; gap: .7rem; align-items: center; font-size: .8rem; font-family: var(--f-display); }
@media (max-width: 560px) { .bar-row { grid-template-columns: minmax(0, 1fr) 4.6rem; } .bar-row .track { grid-column: 1 / -1; order: 3; } }
.bar-row .v { font-family: var(--f-mono); text-align: right; font-variant-numeric: tabular-nums; color: var(--ink); }
.track { position: relative; height: 14px; background: var(--bg-3); border-radius: 3px; }
.track .fill { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 3px; transition: width .2s; }
.track .ref { position: absolute; top: -3px; bottom: -3px; width: 1px; background: var(--muted); opacity: .7; }
.scale-row { position: relative; height: 1.4rem; font-family: var(--f-mono); font-size: .66rem; color: var(--muted); }
.scale-row span { position: absolute; transform: translateX(-50%); white-space: nowrap; }
.att-bars { display: grid; gap: .3rem; }
.att-bar { display: grid; grid-template-columns: 1.6rem .8rem 1fr 3rem; gap: .4rem; align-items: center; font-size: .76rem; font-family: var(--f-mono); }
.att-bar .sw { width: .8rem; height: .8rem; border-radius: 3px; }
.att-bar .tr { height: 8px; background: var(--bg-3); border-radius: 2px; overflow: hidden; }
.att-bar .tr span { display: block; height: 100%; background: var(--k-vec); }
.att-bar .pc { text-align: right; color: var(--muted); }
.out-sw { display: flex; align-items: center; gap: .6rem; font-size: .84rem; }
.out-sw i { width: 2rem; height: 2rem; border-radius: 6px; border: 1px solid var(--rule); display: inline-block; }
/* timeline */
.tl-filters { display: flex; flex-wrap: wrap; gap: .5rem; padding: 1rem; border-bottom: 1px solid var(--rule); }
.tl-filters .chip { font: 500 .74rem var(--f-mono); color: var(--ink); cursor: pointer; }
.tl-filters .chip .dot { width: .55rem; height: .55rem; border-radius: 50%; }
.tl-filters .chip[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.tl { list-style: none; margin: 0; padding: .8rem 1rem 1rem; position: relative; }
.tl::before { content: ""; position: absolute; left: 6.1rem; top: 1.2rem; bottom: 1.2rem; width: 1px; background: var(--rule); }
.tl li { display: grid; grid-template-columns: 4.4rem 1.4rem minmax(0, 1fr); gap: 0 .6rem; padding: .5rem 0; margin: 0; }
.tl .yr { font-family: var(--f-mono); font-size: .76rem; color: var(--muted); text-align: right; padding-top: .2rem; font-variant-numeric: tabular-nums; }
.tl .mk { width: .7rem; height: .7rem; border-radius: 50%; margin: .45rem auto 0; border: 2px solid var(--bg-2); box-shadow: 0 0 0 1px var(--rule); position: relative; }
.tl .tt { font-family: var(--f-display); font-weight: 600; line-height: 1.3; color: var(--ink); font-size: 1rem; }
.tl .tx { font-size: .94rem; color: var(--muted); line-height: 1.5; margin-top: .1rem; }
.tr-r { background: var(--k-book); } .tr-s { background: var(--k-vec); } .tr-i { background: var(--k-dec); }
.tl .tag { font-family: var(--f-mono); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; margin-left: .5rem; font-weight: 400; }
.tag-r { color: var(--k-book); } .tag-s { color: var(--k-vec); } .tag-i { color: var(--k-dec); }
/* svg classes used by the field-guide diagrams */
.sv-box { fill: var(--bg-3); stroke: var(--rule); stroke-width: 1.2; }
.sv-box.hl1 { stroke: var(--k-book); stroke-width: 2; } .sv-box.hl2 { stroke: var(--k-vec); stroke-width: 2; }
svg .sv-t { font: 600 13px var(--f-display) !important; fill: var(--ink) !important; }
svg .sv-s { font: 400 11.5px var(--f-display) !important; fill: var(--muted); }
svg .sv-m { font: 400 11px var(--f-mono) !important; fill: var(--muted); }
svg .sv-big { font: 800 22px var(--f-display) !important; fill: var(--ink) !important; }
.sv-line { stroke: var(--muted); stroke-width: 1.3; fill: none; }
.sv-c { fill: var(--k-book); } .sv-a { fill: var(--k-vec); } .sv-te { fill: var(--k-dec); } .sv-r { fill: var(--k-res); }
.sv-stroke-c { stroke: var(--k-book); } .sv-stroke-a { stroke: var(--k-vec); } .sv-stroke-r { stroke: var(--k-res); } .sv-stroke-t { stroke: var(--k-dec); }

.cards li p > strong + em, .cards li > strong + em { font-style: normal; font-family: var(--f-mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-right: .3rem; }
.cards li > p:first-child > strong:first-child[class], .cards li > strong:first-child[class] { color: unset; }
/* charts keep a readable size on phones: scroll sideways instead of shrinking the labels */
.chartwrap { overflow-x: auto; }
@media (max-width: 700px) { .chartwrap > svg.chart, svg#ll-chart, svg#bits-fig { min-width: 38rem; } .stage.widget { overflow-x: auto; } }

/* ---------- experiments: question, recipe, key, the figure itself, then prompts or a guided reading ---------- */
figure.lab { border: 1px solid var(--rule); border-radius: 14px; background: var(--bg-2); overflow: hidden; }
figure.lab.again { border-color: color-mix(in srgb, var(--k-dec) 35%, var(--rule)); }
.lab-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: .3rem .8rem; padding: .85rem 1.1rem .2rem; }
.lab-id { font: 600 .68rem var(--f-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--bg); background: var(--pc, var(--k-vec)); border-radius: 4px; padding: .12rem .45rem; }
.lab-title { font: 650 1.12rem var(--f-display); color: var(--ink); }
.lab-tag { margin-left: auto; font: 500 .68rem var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--k-vec); border: 1px solid color-mix(in srgb, var(--k-vec) 45%, var(--rule)); border-radius: 999px; padding: .1rem .55rem; }
figure.lab.again .lab-tag { color: var(--k-dec); border-color: color-mix(in srgb, var(--k-dec) 45%, var(--rule)); }
.lab-body { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); }
.lab-body > * { min-width: 0; }
.lab-q { grid-column: 1 / -1; order: 1; padding: .1rem 1.1rem .7rem; font-size: 1.12rem; color: var(--ink); line-height: 1.5; }
.lab-q p { margin: .2rem 0; }
.lab-ref { grid-column: 1 / -1; order: 2; border-top: 1px solid var(--rule); }
.lab-ref summary { cursor: pointer; padding: .55rem 1.1rem; font: 500 .74rem var(--f-mono); color: var(--muted); }
.lab-ref summary:hover { color: var(--ink); }
.lab-ref-body { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); border-top: 1px solid var(--rule); }
.lab-ref-body .lab-q { padding-top: .7rem; }
.lab-recipe { order: 3; border-top: 1px solid var(--rule); padding: .8rem 1.1rem 1rem; background: var(--bg-3); }
.lab-key { order: 4; border-top: 1px solid var(--rule); border-left: 1px solid var(--rule); padding: .8rem 1.1rem 1rem; background: var(--bg-3); }
.lab-h { font: 600 .68rem var(--f-mono); letter-spacing: .13em; text-transform: uppercase; color: var(--muted); margin-bottom: .55rem; }
.lab-recipe ol { margin: 0; padding: 0; list-style: none; counter-reset: st; }
.lab-recipe li { counter-increment: st; position: relative; padding-left: 2rem; margin: 0 0 .5rem; font-size: .98rem; line-height: 1.5; color: var(--ink-2); }
.lab-recipe li::before { content: counter(st); position: absolute; left: 0; top: .12rem; width: 1.35rem; height: 1.35rem; border-radius: 50%; display: grid; place-items: center; font: 600 .7rem var(--f-mono); color: var(--ink); background: var(--bg-2); border: 1px solid var(--rule); }
.lab-recipe li:not(:last-child)::after { content: ""; position: absolute; left: .67rem; top: 1.55rem; bottom: -.45rem; width: 1px; background: var(--rule); }
.lab-recipe code, .lab-key code, .lab-reading code { font: 600 .78em var(--f-mono); color: var(--ink); background: color-mix(in srgb, var(--pc, var(--k-vec)) 13%, var(--bg-2)); border: 1px solid color-mix(in srgb, var(--pc, var(--k-vec)) 30%, var(--rule)); border-radius: 5px; padding: .02em .35em; white-space: nowrap; }
.lab-recipe p, .lab-key p { margin: 0 0 .5rem; font-size: .96rem; }
.lab-key ul { margin: 0; padding: 0; list-style: none; }
.lab-key li { position: relative; padding-left: 1.85rem; margin: 0 0 .5rem; font-size: .96rem; line-height: 1.45; color: var(--ink-2); }
.lab-key li p { margin: 0; }
.lab-key li strong:first-child { color: var(--ink); }
svg.glyph { position: absolute; left: 0; top: .2rem; width: 1.15rem; height: 1.15rem; overflow: visible; }
svg.glyph .g-fill { fill: var(--ink-2); } svg.glyph .g-line { fill: none; stroke: var(--ink-2); stroke-linecap: round; stroke-linejoin: round; }
.lab-stage { grid-column: 1 / -1; order: 5; border: 0; border-top: 1px solid var(--rule); border-radius: 0; }
.lab-look, .lab-reading { grid-column: 1 / -1; order: 6; border-top: 1px solid var(--rule); padding: .85rem 1.1rem 1rem; }
.lab-look { background: color-mix(in srgb, var(--k-vec) 5%, var(--bg-2)); }
.lab-look .lab-h { color: var(--k-vec); }
.lab-look ul, .lab-look ol { margin: 0; padding-left: 1.2rem; }
.lab-look li { margin: .25rem 0; font-size: 1rem; color: var(--ink-2); }
.lab-look li::marker { content: "? "; font: 700 .9em var(--f-mono); color: var(--k-vec); }
.lab-reading .lab-h { color: var(--k-dec); }
.lab-reading ol { margin: 0; padding: 0; list-style: none; counter-reset: rd; display: grid; gap: .4rem; }
.lab-reading li { counter-increment: rd; position: relative; padding: .55rem .8rem .55rem 2.6rem; border: 1px solid var(--rule); border-radius: 10px; background: var(--bg-2); font-size: 1rem; line-height: 1.5; color: var(--ink-2); }
.lab-reading li p { margin: 0; }
.lab-reading li::before { content: counter(rd); position: absolute; left: .7rem; top: .62rem; width: 1.3rem; height: 1.3rem; border-radius: 50%; display: grid; place-items: center; font: 700 .7rem var(--f-mono); color: var(--k-dec); border: 1.5px solid var(--k-dec); }
.lab-reading li[data-view] { cursor: pointer; transition: border-color .15s, background .15s; }
.lab-reading li[data-view]:hover { border-color: color-mix(in srgb, var(--k-dec) 50%, var(--rule)); }
.lab-reading li[aria-pressed="true"] { border-color: var(--k-dec); background: color-mix(in srgb, var(--k-dec) 8%, var(--bg-2)); }
.lab-reading li[aria-pressed="true"]::before { background: var(--k-dec); color: var(--bg); }
.lab-reading li[data-view]::after { content: "show ↗"; position: absolute; right: .7rem; top: .62rem; font: 500 .66rem var(--f-mono); color: var(--faint); }
.lab-reading li[data-view] { padding-right: 4.2rem; }
.lab-reading li[aria-pressed="true"]::after { content: "shown"; color: var(--k-dec); }
@media (max-width: 760px) {
  .lab-body, .lab-ref-body { grid-template-columns: 1fr; }
  .lab-key { border-left: 0; }
  .lab-look { order: 6; }
}

/* inside an experiment's stage */
.lx-bar { display: flex; flex-wrap: wrap; gap: .5rem 1.1rem; align-items: center; padding: .7rem 1rem; border-bottom: 1px solid var(--rule); background: var(--bg-3); font: 500 .74rem var(--f-mono); color: var(--muted); }
.lx-bar label { display: inline-flex; align-items: center; gap: .45rem; }
.lx-bar select { font: 500 .74rem var(--f-mono); color: var(--ink); background: var(--bg-2); border: 1px solid var(--rule); border-radius: 7px; padding: .32rem .45rem; max-width: min(19rem, 70vw); }
.lx-bar input[type=range] { width: 8rem; accent-color: var(--k-vec); }
.lx-bar output { color: var(--ink); min-width: 2rem; font-variant-numeric: tabular-nums; }
.lx-bar input[type=checkbox] { accent-color: var(--k-vec); }
.lx-bar .sp { flex: 1; }
.lx-title { font: 600 .95rem var(--f-display); color: var(--ink); padding: .75rem 1rem 0; }
.lx-sub { font: 400 .72rem/1.5 var(--f-mono); color: var(--muted); padding: .15rem 1rem 0; }
.lx-sub b { color: var(--ink-2); font-weight: 600; }
.lx-legend { display: flex; flex-wrap: wrap; gap: .3rem .5rem; padding: .55rem 1rem .7rem; font: 500 .72rem var(--f-mono); color: var(--ink-2); }
.lx-legend button, .lx-legend span.it { all: unset; display: inline-flex; align-items: center; gap: .4rem; padding: .18rem .55rem .18rem .45rem; border: 1px solid var(--rule); border-radius: 999px; background: var(--bg-2); cursor: pointer; }
.lx-legend span.it { cursor: default; }
.lx-legend button:hover { border-color: var(--muted); }
.lx-legend button[aria-pressed="false"] { opacity: .38; text-decoration: line-through; }
.lx-legend i { width: .62rem; height: .62rem; border-radius: 50%; display: inline-block; flex: none; }
.lx-legend i.ring { background: transparent !important; border: 2px solid; width: .5rem; height: .5rem; }
.lx-legend i.sq { border-radius: 2px; }
.lx-legend i.ln { height: 3px; width: 1rem; border-radius: 2px; }
.lx-legend i.dash { height: 0; width: 1rem; border-top: 2px dashed; border-radius: 0; background: none !important; }
.lx-legend small { color: var(--muted); }
.lx-plot { position: relative; padding: .3rem .4rem 0; }
.lx-plot canvas { touch-action: pan-y; }
.lx-two { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); border-top: 1px solid var(--rule); }
.lx-two > * + * { border-left: 1px solid var(--rule); }
@media (max-width: 760px) { .lx-two { grid-template-columns: 1fr; } .lx-two > * + * { border-left: 0; border-top: 1px solid var(--rule); } }
.lx-read { border-top: 1px solid var(--rule); background: var(--bg-3); padding: .75rem 1rem .85rem; font-size: 1rem; line-height: 1.5; color: var(--ink-2); min-height: 5.2rem; }
.lx-read .tag { font: 600 .68rem var(--f-mono); letter-spacing: .06em; text-transform: uppercase; margin-right: .45rem; color: var(--muted); }
.lx-read .hint { font: 400 .76rem var(--f-mono); color: var(--faint); }
.lx-read .row { margin: .1rem 0 .45rem; }
.lx-read mark { background: color-mix(in srgb, var(--k-vec) 28%, transparent); color: inherit; border-radius: 3px; padding: 0 .1em; }
.lx-stat { border-top: 1px solid var(--rule); padding: .6rem 1rem; font: 500 .76rem/1.6 var(--f-mono); color: var(--ink-2); background: var(--bg-2); }
.lx-stat b { color: var(--ink); }
.lx-list { list-style: none; margin: 0; padding: .35rem 0; max-height: 31rem; overflow: auto; }
.lx-list li { display: grid; grid-template-columns: 1.6rem 3.4rem minmax(0, 1fr); gap: .1rem .5rem; padding: .45rem .9rem; border-bottom: 1px solid var(--rule); font-size: .92rem; line-height: 1.4; color: var(--ink-2); cursor: default; }
.lx-list li:last-child { border-bottom: 0; }
.lx-list li.on { background: color-mix(in srgb, var(--k-q) 9%, transparent); }
.lx-list .rk { font: 700 .74rem var(--f-mono); color: var(--k-q); padding-top: .1rem; }
.lx-list .cs { font: 600 .74rem var(--f-mono); color: var(--ink); padding-top: .1rem; }
.lx-list .cs small { display: block; font-weight: 400; color: var(--muted); }
.lx-list .bk { display: block; font: 500 .66rem var(--f-mono); letter-spacing: .04em; color: var(--muted); margin-bottom: .1rem; }
.lx-list .bk.other { color: var(--k-enc); }
.lx-list u { text-decoration-color: var(--k-vec); text-decoration-thickness: 2px; text-underline-offset: 2px; }
.lx-anno { font-family: var(--f-hand); }
svg.chart .lx-hand { font-family: var(--f-hand); font-size: 19px; }
.lx-loading { min-height: 18rem; display: grid; place-items: center; font: .76rem var(--f-mono); color: var(--faint); }
.lx-list.cols2 { max-height: none; display: grid; grid-template-columns: 1fr 1fr; column-gap: 0; }
.lx-list.cols2 li:nth-child(odd) { border-right: 1px solid var(--rule); }
@media (max-width: 760px) { .lx-list.cols2 { grid-template-columns: 1fr; } .lx-list.cols2 li:nth-child(odd) { border-right: 0; } }

/* ---------- browse page ---------- */
.br-tools select { font: 500 .8rem var(--f-mono); color: var(--ink); background: var(--bg-2); border: 1px solid var(--rule); border-radius: 10px; padding: .6rem .6rem; }
#br-filter { flex: 1; font: 500 .95rem var(--f-display); color: var(--ink); background: var(--bg-2); border: 1px solid var(--rule); border-radius: 10px; padding: .6rem .9rem; min-width: 0; }
#br-count { font-family: var(--f-mono); font-size: .72rem; color: var(--muted); white-space: nowrap; }
.br-chips { display: flex; flex-wrap: wrap; gap: .4rem; margin: 0 0 1.6rem; }
.br-chip { font: 500 .74rem var(--f-mono); color: var(--ink-2); background: var(--bg-2); border: 1px solid var(--rule); border-radius: 999px; padding: .3rem .7rem; cursor: pointer; }
.br-chip b { color: var(--ink); margin-right: .2rem; }
.br-chip[aria-pressed="true"] { border-color: var(--k-vec); color: var(--ink); background: color-mix(in srgb, var(--k-vec) 10%, var(--bg-2)); }
.br-chip[aria-pressed="false"] { opacity: .55; }
.br-kind { margin: 0 0 2.4rem; scroll-margin-top: 7rem; }
.prose .br-kind h2 { margin-bottom: .2rem; }
.br-kind h2 small { font: 500 .8rem var(--f-mono); color: var(--muted); margin-left: .4rem; }
.br-blurb { color: var(--muted); font-size: .98rem; margin: 0 0 1rem; }
.br-labs { display: grid; gap: .8rem; }
.br-lab { border: 1px solid var(--rule); border-radius: 12px; background: var(--bg-2); padding: .9rem 1.1rem 1rem; }
.br-lab header { display: flex; flex-wrap: wrap; gap: .3rem .7rem; align-items: baseline; }
.br-lab .lab-id { --pc: var(--k-vec); }
.br-t { font: 650 1.08rem var(--f-display); color: var(--ink); text-decoration: none; }
.br-t:hover { text-decoration: underline; }
.br-q { margin: .4rem 0 .6rem; color: var(--ink-2); font-size: 1rem; line-height: 1.5; }
.br-looks { list-style: none; margin: 0; padding: 0; display: grid; gap: .3rem; }
.br-looks li { display: flex; flex-wrap: wrap; gap: .2rem .7rem; align-items: baseline; font-size: .92rem; }
.br-look { font: 600 .64rem var(--f-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--k-vec); border: 1px solid color-mix(in srgb, var(--k-vec) 45%, var(--rule)); border-radius: 999px; padding: .05rem .5rem; min-width: 6.6rem; text-align: center; }
.br-look.again { color: var(--k-dec); border-color: color-mix(in srgb, var(--k-dec) 45%, var(--rule)); }
.br-n { font: .7rem var(--f-mono); color: var(--faint); }
.br-where { font: 500 .74rem var(--f-mono); color: var(--k-book); text-decoration: none; }
.br-where:hover { text-decoration: underline; }
.br-sec { color: var(--muted); }
.br-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); gap: .6rem; }
.br-list .br-item { border: 1px solid var(--rule); border-radius: 10px; background: var(--bg-2); padding: .65rem .9rem .7rem; display: flex; flex-direction: column; gap: .25rem; margin: 0; }
.br-list .br-item::marker { content: none; }
.br-list .br-t { font-size: .98rem; }
.br-list p { margin: 0; font-size: .9rem; line-height: 1.45; color: var(--ink-2); flex: 1; }
.br-tag { font: 600 .64rem var(--f-mono); color: var(--muted); letter-spacing: .06em; }
.br-kind[data-kind="key"] .br-item { border-left: 3px solid var(--k-vec); }
.br-kind[data-kind="warn"] .br-item { border-left: 3px solid var(--k-res); }
.br-kind[data-kind="measured"] .br-item { border-left: 3px solid var(--k-dec); }
.br-kind[data-kind="check"] .br-item { border-left: 3px solid var(--k-dec); }
:target.box, figure:target, .codehead:target { scroll-margin-top: 6rem; }
.box:target, figure.fig:target { box-shadow: 0 0 0 3px color-mix(in srgb, var(--k-vec) 35%, transparent); border-radius: 12px; }
.box, figure.fig, .codehead { scroll-margin-top: 5rem; }
figcaption .fname { font: 600 .9rem var(--f-display); color: var(--ink); margin-right: .45rem; }
figcaption .fname + p > strong:first-child { margin-left: 0; }
.br-sticky { position: sticky; top: var(--bar); z-index: 4; background: var(--bg); padding-top: .3rem; margin-bottom: 1.4rem; border-bottom: 1px solid var(--rule); }
.br-sticky .gl-tools { position: static; margin-bottom: .5rem; }
.br-sticky .br-chips { margin: 0 0 .7rem; }
.br-kind { scroll-margin-top: 12rem; }
.br-hint { font: 500 .68rem var(--f-mono); color: var(--k-vec); letter-spacing: .02em; }
.br-hint::before { content: "▸ "; }
@media (max-width: 700px) {
  .br-tools { flex-wrap: wrap; gap: .5rem; }
  #br-filter { flex: 1 1 100%; }
  .br-tools select { flex: 1; }
  .br-chips { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; padding-bottom: .1rem; }
  .br-chip { flex: none; }
}

/* kvdiff figures use the same tokens and controls, with native-width phone plots. */
.kv-figure .chartwrap > svg.chart { min-width: 0; }
.kv-figure .chartwrap { overflow: hidden; }
.kv-figure .controls label { flex-wrap: wrap; }
.kv-figure .controls select { max-width: 100%; }
.kv-figure .clegend { flex-wrap: wrap; }
.kv-matrix { display: grid; grid-template-columns: repeat(24, 1fr); gap: 3px; padding: 1rem; }
.kv-matrix i { aspect-ratio: 1.8; background: var(--bg-3); border: 1px solid var(--rule); border-radius: 2px; }
.kv-matrix i.active { background: var(--k-vec); border-color: var(--k-vec); }