/* EasyxLab — web. Tokens = branding/lab/design-system/exl-tokens.css (paleta de EasyByte).
   Idea: un cuaderno de laboratorio público. Papel y tinta; la cifra es el titular; la mono para
   todo lo que es dato; el espectro de la marca solo en la barra y en la fase de publicación. */
@font-face { font-family: "Jakarta"; src: url("fonts/PlusJakartaSans-Variable.woff2") format("woff2"); font-weight: 200 800; font-display: swap; }
@font-face { font-family: "Geist"; src: url("fonts/Geist-Variable.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("fonts/GeistMono-Variable.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
/* Apoyo técnico: Jakarta no tiene griego ni cirílico y Geist no tiene griego. */
@font-face { font-family: "Inter Fallback"; src: url("fonts/Inter-greek.woff2") format("woff2"); font-weight: 100 900; font-display: swap;
  unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF; }
@font-face { font-family: "Inter Fallback"; src: url("fonts/Inter-greek-ext.woff2") format("woff2"); font-weight: 100 900; font-display: swap; unicode-range: U+1F00-1FFF; }
@font-face { font-family: "Inter Fallback"; src: url("fonts/Inter-cyrillic.woff2") format("woff2"); font-weight: 100 900; font-display: swap;
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: "Inter Fallback"; src: url("fonts/Inter-cyrillic-ext.woff2") format("woff2"); font-weight: 100 900; font-display: swap;
  unicode-range: U+0460-052F, U+1C80-1C88, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F; }

:root {
  --paper: #fbfbfa; --surface: #ffffff; --ink: #2a2a2a; --muted: #5f6168; --rule: #e4e5e8;
  --signal: #3878bf; --signal-ink: #2f69aa; --chip: #f1f2f4; --code: #f4f5f6; --hover: #f6f7f8;
  --spectrum: linear-gradient(90deg, #4a87ce 0%, #3878bf 22%, #e25e5e 50%, #e8945a 78%, #6191D6 100%);
  --display: "Jakarta", "Inter Fallback", "Plus Jakarta Sans", ui-sans-serif, system-ui, sans-serif;
  --sans: "Geist", "Inter Fallback", -apple-system, BlinkMacSystemFont, ui-sans-serif, system-ui, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --wrap: 1160px; --gutter: clamp(20px, 4vw, 40px); --r: 14px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --paper: #15171c; --surface: #1c1f26; --ink: #f2f2f0; --muted: #a0a3ab; --rule: #2c303a;
    --signal: #6191D6; --signal-ink: #8fb0e3; --chip: #252933; --code: #1c1f26; --hover: #20242c; color-scheme: dark; }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 84px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--signal-ink); text-underline-offset: .18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 4px; }
code, kbd { font: 400 .88em/1.5 var(--mono); }
h1, h2, h3 { font-family: var(--display); letter-spacing: -.02em; text-wrap: balance; margin: 0; }
p { margin: 0; }
button { font: inherit; color: inherit; }
.mono { font-family: var(--mono); }
.small { font-size: 14px; }
.muted { color: var(--muted); }
.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--paper); padding: 8px 12px; z-index: 20; }
.skip:focus { left: 8px; }
.eyebrow { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.eyebrow a { color: inherit; }
.chip { display: inline-flex; align-items: center; font: 500 12px/1 var(--mono); padding: 6px 10px; border-radius: 999px; background: var(--chip); color: var(--muted); white-space: nowrap; text-decoration: none; }
a.chip:hover { color: var(--ink); }
.chip.ghost { background: transparent; border: 1px solid var(--rule); }
.more { font-size: 15px; font-weight: 500; text-decoration: none; white-space: nowrap; }
.more:hover { text-decoration: underline; }
kbd { border: 1px solid var(--rule); border-bottom-width: 2px; border-radius: 6px; padding: 1px 6px; font-size: 12px; color: var(--muted); background: var(--surface); }

/* ---------- cabecera ---------- */
header.site { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--paper) 88%, transparent); backdrop-filter: saturate(1.2) blur(10px); border-bottom: 1px solid var(--rule); }
.bar { display: flex; align-items: center; gap: 18px; min-height: 64px; }
.brand img { height: 26px; width: auto; }
nav.main { display: flex; gap: clamp(14px, 2.4vw, 28px); margin-left: auto; }
nav.main a { color: var(--ink); text-decoration: none; font-size: 15px; padding-block: 6px; border-bottom: 2px solid transparent; }
nav.main a:hover { color: var(--signal-ink); }
nav.main a[aria-current] { border-image: var(--spectrum) 1; border-bottom: 2px solid; }
.sbtn { display: inline-flex; align-items: center; gap: 8px; padding: 6px 8px 6px 10px; border: 1px solid var(--rule); border-radius: 999px; background: var(--surface); color: var(--muted); cursor: pointer; font-size: 14px; }
.sbtn:hover { border-color: var(--signal); color: var(--ink); }
.sbtn svg, .hsearch svg, .sform svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; flex: none; }
.lang { position: relative; }
.lang summary { list-style: none; cursor: pointer; font-size: 14px; color: var(--muted); padding: 6px 10px; border: 1px solid var(--rule); border-radius: 999px; white-space: nowrap; }
.lang summary::-webkit-details-marker { display: none; }
.lang summary .mono { color: var(--ink); font-size: 12px; margin-right: 2px; }
.lang[open] summary { border-color: var(--signal); }
.lang ul { position: absolute; right: 0; top: calc(100% + 8px); margin: 0; padding: 8px; list-style: none; background: var(--surface); border: 1px solid var(--rule); border-radius: 12px; box-shadow: 0 10px 30px rgba(20,23,28,.12); display: grid; grid-template-columns: repeat(3, minmax(120px, 1fr)); gap: 2px; max-height: 70vh; overflow: auto; z-index: 12; }
.lang li a { display: block; padding: 7px 10px; border-radius: 8px; color: var(--ink); text-decoration: none; font-size: 14px; }
.lang li a:hover { background: var(--chip); }
.lang li a[aria-current] { color: var(--signal-ink); font-weight: 600; }
.mt { background: var(--chip); border-bottom: 1px solid var(--rule); font-size: 13.5px; color: var(--muted); }
.mt p { padding-block: 9px; }
.mt a { color: var(--ink); }

/* ---------- portada ---------- */
.hero { padding-block: clamp(56px, 9vw, 112px) 8px; display: grid; gap: 24px; }
.hero h1 { font-size: clamp(46px, 8.6vw, 108px); font-weight: 500; line-height: .98; }
.spectrum { width: clamp(120px, 16vw, 180px); height: 14px; border-radius: 999px; background: var(--spectrum); }
.lead { font-size: clamp(19px, 2vw, 22px); line-height: 1.5; color: var(--muted); max-width: 60ch; }
.hsearch { display: flex; align-items: center; gap: 12px; width: min(560px, 100%); padding: 14px 16px; border: 1px solid var(--rule); border-radius: var(--r); background: var(--surface); color: var(--muted); font-size: 16px; cursor: text; text-align: left; box-shadow: 0 1px 2px rgba(20,23,28,.04); }
.hsearch span { flex: 1; }
.hsearch:hover { border-color: var(--signal); }
.block { padding-top: clamp(56px, 8vw, 96px); }
.block.first { padding-top: clamp(40px, 6vw, 72px); }
.block.last { padding-bottom: clamp(64px, 9vw, 112px); }
.sec { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 8px 20px; margin-bottom: 26px; }
.sec .eyebrow { grid-column: 1 / -1; }
.sec h2 { font-size: clamp(28px, 3.6vw, 40px); font-weight: 500; line-height: 1.12; }

.latest { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 14px; }
.latest.small { grid-template-columns: repeat(3, 1fr); }
.fcard { display: grid; align-content: start; gap: 8px; padding: 24px; border: 1px solid var(--rule); border-radius: var(--r); background: var(--surface); color: inherit; text-decoration: none; position: relative; overflow: hidden; transition: border-color .15s, transform .15s; }
.fcard::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--spectrum); opacity: 0; transition: opacity .15s; }
.fcard:hover { border-color: color-mix(in srgb, var(--signal) 50%, var(--rule)); }
.fcard:hover::before, .fcard.big::before { opacity: 1; }
.fcard .k { font-size: 12.5px; color: var(--muted); }
.fig { font: 600 clamp(36px, 4.2vw, 50px)/1.04 var(--display); letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.fcard.big .fig { font-size: clamp(52px, 6.4vw, 84px); }
.fcard .lbl { font-size: 16px; line-height: 1.4; }
.fcard.big .lbl { font-size: 19px; }
.fcard .ttl { font-size: 14.5px; color: var(--muted); line-height: 1.35; margin-top: 4px; }
.fcard .meta { font-size: 12.5px; color: var(--muted); margin-top: auto; padding-top: 10px; }

.ledger { overflow-x: auto; border-top: 1px solid var(--rule); }
.ledger table { border-collapse: collapse; width: 100%; font-size: 15.5px; }
.ledger th { font: 500 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .07em; color: var(--muted); text-align: left; padding: 14px 12px 12px 0; border-bottom: 1px solid var(--rule); }
.ledger td { padding: 13px 12px 13px 0; border-bottom: 1px solid var(--rule); vertical-align: baseline; }
.ledger td.fig { font: 600 19px/1.2 var(--mono); white-space: nowrap; padding-right: 22px; }
.ledger td.n { color: var(--muted); font-size: 13px; white-space: nowrap; }
.ledger tr:hover td { background: var(--hover); }

.topics { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; }
.topic { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 16px 18px; border: 1px solid var(--rule); border-radius: 12px; color: var(--ink); text-decoration: none; background: var(--surface); }
.topic .mono { color: var(--muted); font-size: 14px; }
.topic:hover { border-color: var(--signal); }
.tcards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.tcard { display: grid; gap: 6px; padding: 20px; border: 1px solid var(--rule); border-radius: 12px; color: var(--muted); text-decoration: none; font-size: 15px; background: var(--surface); }
.tcard .mono { color: var(--ink); font-size: 17px; font-weight: 600; }
.tcard:hover { border-color: var(--signal); }
.teaser { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 12px 32px; padding: 28px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.teaser p { font: 500 clamp(19px, 2vw, 23px)/1.4 var(--display); letter-spacing: -.01em; max-width: 52ch; }

/* ---------- cabecera de página ---------- */
.phead { padding-block: clamp(40px, 6vw, 72px) 28px; display: grid; gap: 14px; }
.phead h1 { font-size: clamp(40px, 6vw, 68px); font-weight: 500; line-height: 1.02; }

/* ---------- lista de estudios ---------- */
.filters { display: grid; gap: 14px; padding: 18px; border: 1px solid var(--rule); border-radius: var(--r); background: var(--surface); }
.ftext { width: 100%; padding: 11px 14px; border: 1px solid var(--rule); border-radius: 10px; background: var(--paper); color: var(--ink); font: inherit; font-size: 16px; }
.ftext:focus { outline: 2px solid var(--signal); outline-offset: 0; border-color: transparent; }
.fchips { display: flex; flex-wrap: wrap; gap: 8px; }
.fchip { padding: 7px 12px; border: 1px solid var(--rule); border-radius: 999px; background: var(--paper); font-size: 14px; cursor: pointer; color: var(--ink); }
.fchip[aria-pressed="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.fsel { display: flex; flex-wrap: wrap; gap: 10px 18px; }
.fsel label { display: inline-flex; align-items: center; gap: 8px; font: 500 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.fsel select { font: 400 15px/1.2 var(--sans); text-transform: none; letter-spacing: 0; color: var(--ink); background: var(--paper); border: 1px solid var(--rule); border-radius: 8px; padding: 6px 8px; }
.fcount { font-size: 13px; color: var(--muted); margin: 22px 0 6px; }
.slist { border-top: 1px solid var(--rule); }
.srow { display: grid; grid-template-columns: 170px 1fr; gap: 26px; padding: 24px 0; border-bottom: 1px solid var(--rule); }
.srow[hidden] { display: none; }
.sfig { display: grid; align-content: start; gap: 4px; color: var(--ink); text-decoration: none; }
.sfig .fig { font-size: 32px; }
.sfig .mono { font-size: 13px; color: var(--muted); }
.sbody { display: grid; gap: 10px; min-width: 0; }
.sbody h3 { font-size: 22px; font-weight: 600; line-height: 1.25; }
.sbody h3 a { color: var(--ink); text-decoration: none; }
.sbody h3 a:hover { color: var(--signal-ink); }
.sbody .lbl { color: var(--muted); max-width: 72ch; }
.sbody .lbl b { color: var(--ink); font-weight: 600; }
.sbody .n { font-size: 12.5px; margin-left: 6px; white-space: nowrap; }
.smeta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.when { font-size: 12.5px; color: var(--muted); margin-left: 4px; }
.fnone { padding: 28px 0; color: var(--muted); }
.linkbtn { background: none; border: 0; padding: 0; color: var(--signal-ink); text-decoration: underline; cursor: pointer; }

/* fase de publicación: tres segmentos del espectro */
.track { display: inline-grid; grid-template-columns: repeat(3, 18px); gap: 3px; vertical-align: middle; }
.seg { height: 6px; border-radius: 999px; background: var(--rule); }
.seg.on { background: var(--spectrum); background-size: 300% 100%; }
.seg.on:nth-child(1) { background-position: 0 0; }
.seg.on:nth-child(2) { background-position: 50% 0; }
.seg.on:nth-child(3) { background-position: 100% 0; }
.smeta .track { margin-left: 6px; }
.stage-name { font: 500 13px/1 var(--mono); color: var(--muted); margin-left: 10px; }

/* ---------- página de estudio ---------- */
.spage { padding-block: 34px clamp(64px, 9vw, 112px); }
.crumb { font-size: 13px; color: var(--muted); margin-bottom: 28px; }
.crumb a { color: inherit; }
.shead { display: grid; gap: 16px; margin-bottom: 40px; max-width: 920px; }
.shead h1 { font-size: clamp(34px, 5vw, 58px); font-weight: 500; line-height: 1.05; }
.shead .q { font-size: 19px; color: var(--muted); }
.stagebar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 18px; }
.stagebar .track { grid-template-columns: repeat(3, 32px); }
.stagebar .seg { height: 8px; }
.dates { font-size: 13px; color: var(--muted); }
.slayout { display: grid; grid-template-columns: 300px 1fr; gap: clamp(28px, 5vw, 72px); align-items: start; }
.side { position: sticky; top: 88px; display: grid; gap: 18px; }
.figbox { display: grid; gap: 8px; padding: 22px; border-radius: var(--r); background: var(--surface); border: 1px solid var(--rule); position: relative; overflow: hidden; }
.figbox::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 3px; background: var(--spectrum); }
.figbox .k { font-size: 12.5px; color: var(--muted); }
.figbox .lbl { font-size: 16px; line-height: 1.4; }
.figbox .n { font-size: 12.5px; color: var(--muted); }
.ghbox { display: grid; gap: 8px; padding: 20px 22px; border-radius: var(--r); border: 1px solid var(--rule); }
.ghh { font-weight: 600; }
.files { display: flex; flex-wrap: wrap; gap: 6px 14px; font-size: 15px; margin-top: 4px; }
.prose { display: grid; gap: 16px; max-width: 70ch; min-width: 0; }
.abstract h2, .prose h2 { font-size: 24px; font-weight: 600; margin-top: 8px; }
.abstract > div { display: grid; gap: 14px; }
.abstract ul { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; }
.abstract p code, .abstract li code { background: var(--chip); padding: 1px 5px; border-radius: 4px; font-size: .84em; }
.competing { border-left: 3px solid var(--signal); padding: 4px 0 4px 16px; color: var(--muted); }
.untr { font-size: 14px; color: var(--muted); border: 1px dashed var(--rule); border-radius: 8px; padding: 10px 14px; }
.tbl { overflow-x: auto; border: 1px solid var(--rule); border-radius: 10px; }
.tbl table { border-collapse: collapse; width: 100%; font-size: 15px; }
.tbl th, .tbl td { text-align: left; padding: 9px 14px; border-bottom: 1px solid var(--rule); }
.tbl tr:last-child td { border-bottom: 0; }
.tbl th { font: 500 12px/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); background: var(--chip); }
.tbl td.num { font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
.copyb { border: 1px solid var(--rule); border-radius: 10px; overflow: hidden; background: var(--code); }
.cbh { display: flex; justify-content: space-between; align-items: center; padding: 6px 8px 6px 14px; border-bottom: 1px solid var(--rule); font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.cbtn { font: 500 12px/1 var(--mono); padding: 6px 10px; border: 1px solid var(--rule); border-radius: 6px; background: var(--surface); cursor: pointer; }
.cbtn.ok { color: var(--signal-ink); border-color: var(--signal); }
.copyb pre { margin: 0; padding: 14px; overflow-x: auto; font: 400 13px/1.65 var(--mono); }
.copyb pre code { white-space: pre-wrap; overflow-wrap: anywhere; font-size: inherit; }
.copyb.bib pre code, .copyb.cmd pre code { white-space: pre; overflow-wrap: normal; }
.related { margin-top: 64px; display: grid; gap: 18px; }
.related h2 { font-size: 24px; font-weight: 600; }
.pnav { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 48px; }
.pn { display: grid; gap: 4px; padding: 18px 20px; border: 1px solid var(--rule); border-radius: 12px; color: var(--ink); text-decoration: none; }
.pn .mono { font-size: 12.5px; color: var(--muted); }
.pn.n { grid-column: 2; text-align: right; }
.pn:hover { border-color: var(--signal); }

/* ---------- herramientas ---------- */
.tools { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 16px; }
.tool { background: var(--surface); border: 1px solid var(--rule); border-radius: var(--r); padding: 24px; display: grid; gap: 14px; align-content: start; scroll-margin-top: 90px; }
.tool:target { border-color: var(--signal); }
.tool h2 { font: 600 23px/1.2 var(--mono); letter-spacing: -.01em; }
.tool h2 a { color: var(--ink); text-decoration: none; }
.tool > p { color: var(--muted); font-size: 16px; }
.tool dl { margin: 0; display: grid; grid-template-columns: 58px 1fr; gap: 8px 10px; font-size: 14px; }
.tool dt { font: 500 12px/1.9 var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.tool dd { margin: 0; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.also { margin-top: 24px; color: var(--muted); max-width: 80ch; font-size: 16px; padding-bottom: 80px; }
.also code { background: var(--chip); padding: 2px 6px; border-radius: 4px; }

/* ---------- método ---------- */
.mgrid { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(28px, 5vw, 72px); align-items: start; }
.principles { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.principles li { padding: 16px 0; border-bottom: 1px solid var(--rule); color: var(--muted); }
.principles b { color: var(--ink); font-weight: 600; display: block; margin-bottom: 2px; }
.stages { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.stages li { display: grid; grid-template-columns: 70px 1fr; gap: 4px 14px; align-items: baseline; color: var(--muted); }
.stages li b { color: var(--ink); }
.stages .track { grid-row: span 2; align-self: center; }
section.block:last-child, .mgrid + .block { padding-bottom: clamp(64px, 9vw, 112px); }

/* ---------- buscador ---------- */
dialog.search { width: min(640px, calc(100vw - 32px)); max-height: min(70vh, 640px); margin: 10vh auto auto; padding: 0; border: 1px solid var(--rule); border-radius: 16px; background: var(--surface); color: var(--ink); box-shadow: 0 30px 80px rgba(20,23,28,.25); overflow: hidden; }
dialog.search::backdrop { background: rgba(20,23,28,.35); backdrop-filter: blur(2px); }
.sform { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--rule); color: var(--muted); }
.sform input { flex: 1; border: 0; background: transparent; font: inherit; font-size: 18px; color: var(--ink); outline: none; }
.sclose { border: 1px solid var(--rule); background: var(--paper); border-radius: 8px; padding: 4px 8px; font-size: 13px; cursor: pointer; color: var(--muted); }
.sres { list-style: none; margin: 0; padding: 8px; overflow: auto; max-height: calc(min(70vh, 640px) - 64px); }
.sres a { display: grid; grid-template-columns: 70px 1fr auto; gap: 2px 12px; padding: 10px 12px; border-radius: 10px; color: var(--ink); text-decoration: none; }
.sres li[aria-selected="true"] a, .sres a:hover { background: var(--chip); }
.sres .sk { font-size: 12.5px; color: var(--muted); grid-row: span 2; padding-top: 3px; }
.sres .st { font-weight: 600; line-height: 1.3; }
.sres .sf { font: 600 15px/1.3 var(--mono); grid-row: span 2; align-self: center; }
.sres .sl { font-size: 14px; color: var(--muted); line-height: 1.35; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sempty { padding: 18px 12px; color: var(--muted); }

/* ---------- pie ---------- */
footer.site { border-top: 1px solid var(--rule); background: var(--surface); }
.foot { padding-block: 44px 56px; display: grid; grid-template-columns: auto 1fr; gap: 40px; align-items: start; }
.endorse img { height: 58px; width: auto; }
.foot .cols { display: grid; gap: 12px; color: var(--muted); max-width: 70ch; }
.foot a { color: var(--muted); }

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .latest { grid-template-columns: 1fr 1fr; }
  .latest .fcard.big { grid-column: 1 / -1; }
  .latest.small { grid-template-columns: 1fr 1fr; }
  .slayout, .mgrid { grid-template-columns: 1fr; }
  .side { position: static; }
  .foot { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .bar { flex-wrap: wrap; gap: 10px 12px; padding-top: 10px; }
  nav.main { order: 3; width: 100%; margin-left: 0; gap: 22px; padding-bottom: 4px; }
  .sbtn { margin-left: auto; }
  .sbtn-l, .sbtn kbd { display: none; }
  .lang summary .lname { display: none; }
  .lang ul { grid-template-columns: repeat(2, minmax(120px, 1fr)); right: -8px; }
  .latest, .latest.small { grid-template-columns: 1fr; }
  .srow { grid-template-columns: 1fr; gap: 10px; }
  .sfig { grid-auto-flow: column; justify-content: start; align-items: baseline; gap: 10px; }
  .sec { grid-template-columns: 1fr; }
  .pnav { grid-template-columns: 1fr; }
  .pn.n { grid-column: 1; text-align: left; }
  .hsearch kbd { display: none; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* ---------- paper: lectura larga ---------- */
.paperbox { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; padding: 18px 22px; border-radius: var(--r); border: 1px solid var(--rule); background: var(--surface); }
.pbtn { display: inline-flex; align-items: center; padding: 9px 16px; border-radius: 999px; background: var(--ink); color: var(--paper); font-weight: 600; font-size: 15px; text-decoration: none; }
.pbtn:hover { background: var(--signal-ink); color: #fff; }
.paperbox .pdf { font-size: 13px; margin-left: auto; }
.tiny { font-size: 12px; color: var(--muted); }
.ppage { padding-block: 34px clamp(64px, 9vw, 112px); }
.phd { display: grid; gap: 14px; max-width: 900px; margin-bottom: 40px; }
.phd h1 { font-size: clamp(32px, 4.6vw, 54px); font-weight: 500; line-height: 1.06; }
.pauth { font: 500 14px/1.4 var(--mono); color: var(--muted); }
.pactions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px; margin-top: 6px; }
.playout { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); align-items: start; }
.ptoc { position: sticky; top: 88px; max-height: calc(100vh - 110px); overflow: auto; font-size: 14px; }
.ptoc .mono { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); margin-bottom: 10px; }
.ptoc ol { margin: 0; padding: 0; list-style: none; display: grid; gap: 7px; }
.ptoc a { color: var(--ink); text-decoration: none; }
.ptoc a:hover { color: var(--signal-ink); }
.pbody { max-width: 72ch; font-size: 17.5px; line-height: 1.68; display: grid; gap: 14px; min-width: 0; }
.pbody h2 { font-size: 27px; font-weight: 600; margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--rule); scroll-margin-top: 84px; }
.pbody h3 { font-size: 20px; font-weight: 600; margin-top: 12px; scroll-margin-top: 84px; }
.pbody h4 { font-size: 17px; font-weight: 600; }
.pbody ul, .pbody ol { margin: 0; padding-left: 1.3em; display: grid; gap: 6px; }
.pbody li > ul, .pbody li > ol { margin-top: 6px; }
.pbody p code, .pbody li code, .pbody td code { background: var(--chip); padding: 1px 5px; border-radius: 4px; font-size: .84em; }
.pbody blockquote { margin: 0; border-left: 3px solid var(--signal); padding: 2px 0 2px 16px; color: var(--muted); }
.pbody hr { border: 0; border-top: 1px solid var(--rule); width: 100%; }
.pbody .tbl table { font-size: 14.5px; }

@media (max-width: 1000px) { .playout { grid-template-columns: 1fr; } .ptoc { position: static; max-height: none; border: 1px solid var(--rule); border-radius: 12px; padding: 16px 18px; } }

/* ---------- impresión (y PDF del paper) ---------- */
@page { size: A4; margin: 18mm 16mm 18mm 16mm; }
@media print {
  :root { --paper: #fff; --surface: #fff; --ink: #1d1d1d; --muted: #555; --rule: #d9d9d9; --chip: #f2f2f2; --code: #f6f6f6; color-scheme: light; }
  body { font-size: 10.5pt; background: #fff; }
  header.site, footer.site, .mt, dialog.search, .ptoc, .pactions, .skip, .crumb, .copyb .cbtn, .pnav, .related { display: none !important; }
  .wrap { max-width: none; padding: 0; }
  .playout { display: block; }
  .phd { margin-bottom: 18pt; }
  .phd h1 { font-size: 22pt; }
  .pbody { max-width: none; font-size: 10.5pt; line-height: 1.5; gap: 8pt; }
  .pbody h2 { font-size: 14pt; margin-top: 12pt; padding-top: 8pt; break-after: avoid; }
  .pbody h3 { font-size: 12pt; break-after: avoid; }
  .tbl, table, blockquote, .copyb { break-inside: avoid; }
  .tbl { overflow: visible; }
  a { color: inherit; text-decoration: none; }
  .copyb.bib pre code { white-space: pre-wrap; }
}