/* ==========================================================================
   SURUS · Laboratorio · dirección "Geometría"
   La notación es el sistema gráfico. Cinco formas con significado fijo
   (∇ ■ ◆ ● ▲) y una variante abierta (contorno punteado). Aparecen en
   titulares, láminas, listas, navegación y estados. Nada es decorativo.
   ========================================================================== */

:root {
  --bg: #F6F8F9;
  --white: #FFFFFF;
  --ink: #101417;
  --ink-2: #3D474E;
  --ink-3: #5B6770;
  --rule: #D5DCE1;
  --grid: #E7ECEF;
  --steel: #C9D2D8;
  --cyan: #00A3B3;
  --cyan-ink: #006E78;
  --yellow: #E5DD7A;

  --sans: "Instrument Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --max: 1312px;
  --gutter: clamp(16px, 4vw, 56px);
  --cg: clamp(16px, 2vw, 32px);
  --sec: clamp(56px, 6.5vw, 96px);
  --stroke: 1.25px;

  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
h1, h2, h3, p, ol, ul, dl, dd, figure, blockquote { margin: 0; padding: 0; }
ol, ul { list-style: none; }
a { color: inherit; }
img { display: block; }
::selection { background: var(--yellow); color: var(--ink); }
:focus-visible { outline: 2px solid var(--cyan-ink); outline-offset: 3px; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; z-index: 50; background: var(--ink); color: #fff; padding: 8px 12px; }

.wrap { width: 100%; max-width: calc(var(--max) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }
.mono { font-family: var(--mono); font-size: 11.5px; line-height: 1.45; letter-spacing: .04em; text-transform: uppercase; color: var(--ink-3); font-weight: 400; }

/* ---------- la notación ---------- */

.g {
  width: 1em; height: 1em;
  display: inline-block; flex: none;
  vertical-align: -.14em;
  overflow: visible;
  stroke: var(--ink);
  stroke-width: var(--stroke);
  stroke-linejoin: miter;
  fill: var(--ink);
}
.g--surus   { fill: var(--ink); stroke: none; }
.g--sistema { fill: var(--steel); }
.g--persona { fill: var(--ink); stroke: none; }
.g--impacto { fill: var(--cyan); }
.g--caso    { fill: var(--yellow); }
.g--open    { fill: none; stroke: var(--ink-3); stroke-dasharray: 2.5 2; }
.g--other   { fill: var(--white); stroke: var(--ink-3); }
.g--sm      { transform: scale(.62); transform-origin: 50% 50%; }

/* el punto final de cada titular es la forma de su sección */
.stop { white-space: nowrap; }
.stop .g { width: .2em; height: .2em; vertical-align: baseline; margin-left: .06em; --stroke: 1px; }
.stop .g--surus { width: .24em; height: .24em; }

/* marcas de registro en las cuatro esquinas */
.reg {
  --m: var(--ink);
  background:
    linear-gradient(var(--m), var(--m)) top left / 12px 1px no-repeat,
    linear-gradient(var(--m), var(--m)) top left / 1px 12px no-repeat,
    linear-gradient(var(--m), var(--m)) top right / 12px 1px no-repeat,
    linear-gradient(var(--m), var(--m)) top right / 1px 12px no-repeat,
    linear-gradient(var(--m), var(--m)) bottom left / 12px 1px no-repeat,
    linear-gradient(var(--m), var(--m)) bottom left / 1px 12px no-repeat,
    linear-gradient(var(--m), var(--m)) bottom right / 12px 1px no-repeat,
    linear-gradient(var(--m), var(--m)) bottom right / 1px 12px no-repeat,
    var(--white);
}

/* ---------- botones ---------- */

.btn {
  display: inline-flex; align-items: center; gap: 12px;
  height: 46px; padding: 0 18px;
  font: 500 15px/1 var(--sans); text-decoration: none; letter-spacing: -.005em;
  border: 1px solid var(--ink);
  transition: background-color .15s, color .15s;
}
.btn .g { width: 11px; height: 11px; vertical-align: 0; transition: transform .15s; }
.btn:hover .g { transform: translateX(3px); }
.btn--ink { background: var(--ink); color: #fff; }
.btn--ink:hover { background: var(--cyan-ink); border-color: var(--cyan-ink); }
.btn--line { background: transparent; color: var(--ink); }
.btn--line:hover { background: var(--white); }
.btn--sm { height: 36px; padding: 0 14px; font-size: 14px; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }

/* ---------- cabecera ---------- */

.top {
  position: sticky; top: 0; z-index: 20;
  background: rgba(246, 248, 249, .94);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--ink);
}
.top__in { display: flex; align-items: center; gap: 24px; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 600 15px/1 var(--sans); letter-spacing: .14em; }
.brand img { width: 22px; height: 22px; object-fit: contain; }
.nav { margin-left: auto; }
.nav ol { display: flex; gap: 2px; }
.nav a {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 10px; text-decoration: none;
  font-size: 14px; color: var(--ink-2);
  border-bottom: 1px solid transparent;
}
/* forma sin color = dimensión; forma con color = estado (sección actual) */
.nav .g { width: 10px; height: 10px; vertical-align: 0; fill: none; stroke: var(--ink-3); --stroke: 1px; }
.nav a:hover { color: var(--ink); }
.nav a:hover .g { stroke: var(--ink); }
.nav a.is-on { color: var(--ink); border-bottom-color: var(--ink); }
.nav a.is-on .g--surus { fill: var(--ink); stroke: var(--ink); }
.nav a.is-on .g--persona { fill: var(--ink); stroke: var(--ink); }
.nav a.is-on .g--impacto { fill: var(--cyan); stroke: var(--ink); }
.nav a.is-on .g--caso { fill: var(--yellow); stroke: var(--ink); }
.nav a.is-on .g--sistema { fill: var(--steel); stroke: var(--ink); }
.menu { display: none; }

/* ---------- §00 hero ---------- */

.hero { position: relative; background: var(--white); border-bottom: 1px solid var(--ink); overflow: hidden; }
.hero__cols {
  position: absolute; inset: 0; left: 50%; transform: translateX(-50%);
  display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--cg);
  pointer-events: none;
}
.hero__cols i { border-left: 1px solid var(--grid); border-right: 1px solid var(--grid); }
.hero__in {
  position: relative;
  display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--cg);
  padding-top: clamp(40px, 5vw, 72px); padding-bottom: clamp(40px, 4.5vw, 64px);
  align-items: start;
}
.hero__text { grid-column: 1 / span 7; position: relative; }
.eyebrow { display: flex; align-items: center; gap: 14px; font: 400 11.5px/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 28px; }
.eyebrow__n { color: var(--ink); padding: 3px 6px; border: 1px solid var(--ink); }
h1 {
  font-size: clamp(42px, 5.5vw, 80px);
  font-weight: 500; line-height: .98; letter-spacing: -.04em;
  max-width: 14ch;
  text-wrap: balance;
}
.lede { margin-top: 28px; max-width: 50ch; font-size: clamp(17px, 1.35vw, 19px); line-height: 1.5; color: var(--ink-2); }
.hero .actions { margin-top: 32px; }

/* Lám. 00 · Notación */
.key { grid-column: 9 / span 4; border: 1px solid var(--rule); padding: 18px 20px 20px; position: relative; margin-top: 6px; }
.key__head { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 4px 12px; padding-bottom: 14px; border-bottom: 1px solid var(--ink); }
.key__head .mono:first-child { grid-column: 1 / -1; }
.key__t { font-size: 28px; font-weight: 500; letter-spacing: -.03em; line-height: 1; }
.key__rule { text-align: right; font-size: 10.5px; text-transform: none; letter-spacing: .02em; }
.key__list > div {
  display: grid; grid-template-columns: 112px 1fr; align-items: center; gap: 12px;
  padding: 11px 0; border-bottom: 1px solid var(--grid);
}
.key__list dt { display: flex; align-items: center; gap: 14px; font-weight: 500; font-size: 15px; }
.key__list dt .g { width: 26px; height: 26px; }
.key__list dd { font-size: 14px; color: var(--ink-2); line-height: 1.3; }
.key__eq {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 16px; padding: 14px 4px 0; border-top: 1px solid var(--ink);
}
.key__eq .g { width: 22px; height: 22px; }
.key__eq b { font: 400 15px/1 var(--mono); color: var(--ink-3); }

.facts {
  position: relative;
  display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink);
  background: var(--white);
}
.facts li {
  display: grid; grid-template-columns: 22px 1fr; column-gap: 12px; row-gap: 2px;
  padding: 18px 20px 22px 0;
}
.facts li + li { padding-left: 20px; border-left: 1px solid var(--rule); }
.facts .g { width: 16px; height: 16px; grid-row: 1 / span 2; margin-top: 3px; }
.facts b { font-weight: 500; font-size: 16px; }
.facts span { font-size: 14px; color: var(--ink-2); line-height: 1.4; }

/* ---------- secciones y rótulo ---------- */

.sec { padding: var(--sec) 0 0; }
.sec:last-of-type { padding-bottom: var(--sec); }
.rot {
  display: grid; grid-template-columns: 64px 1fr auto; align-items: center; gap: 16px;
  padding-top: 12px; border-top: 1px solid var(--ink);
  font: 400 11.5px/1.4 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3);
  margin-bottom: clamp(28px, 3.5vw, 48px);
}
.rot__n { color: var(--ink); font-weight: 500; }
.rot__e { display: inline-flex; align-items: center; gap: 10px; }
.rot__e .g { width: 11px; height: 11px; vertical-align: 0; }
.rot__f { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-3); letter-spacing: 0; }
.rot__f .g { width: 11px; height: 11px; vertical-align: 0; --stroke: 1px; }

h2 {
  font-size: clamp(32px, 3.5vw, 50px);
  font-weight: 500; line-height: 1.02; letter-spacing: -.035em;
  text-wrap: balance;
}
h3 { font-size: 17px; font-weight: 500; letter-spacing: -.01em; line-height: 1.3; }

.split { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--cg); row-gap: 40px; align-items: start; }
.split__text { grid-column: 1 / span 5; }
.split__text > p { margin-top: 18px; color: var(--ink-2); max-width: 46ch; }
.split__text > h2 + p { margin-top: 24px; }
.split > .plate { grid-column: 7 / span 6; }

.verbs { margin-top: 28px; border-top: 1px solid var(--rule); counter-reset: v; }
.verbs li {
  counter-increment: v;
  display: grid; grid-template-columns: 40px 1fr; align-items: baseline;
  padding: 9px 0; border-bottom: 1px solid var(--rule);
  font-size: 19px; letter-spacing: -.015em; font-weight: 500;
}
.verbs li::before { content: "0" counter(v); font: 400 11.5px/1 var(--mono); color: var(--ink-3); }
.verbs + p { margin-top: 22px !important; }

/* ---------- láminas ---------- */

.plate { border: 1px solid var(--rule); padding: 16px 20px 22px; }
.plate__head {
  display: flex; justify-content: space-between; gap: 16px; align-items: baseline;
  padding-bottom: 12px; margin-bottom: 18px; border-bottom: 1px solid var(--grid);
  font-size: 14px; font-weight: 500;
}
.plate__head .mono { flex: none; }
.plate__foot { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 18px; padding-top: 10px; border-top: 1px solid var(--grid); font-size: 10.5px; }

/* la institución dibujada como sistema de formas */
.inst {
  --gs: 22px;
  display: grid; grid-template-columns: 82px repeat(5, 1fr);
}
.inst__lab {
  display: flex; align-items: center;
  font: 400 10.5px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3);
  border-top: 1px dashed var(--grid);
}
.inst > .c {
  display: flex; align-items: center; justify-content: center;
  min-height: 52px; border-top: 1px dashed var(--grid);
  background-repeat: no-repeat; background-position: center top;
}
.inst > .c .g { width: var(--gs); height: var(--gs); position: relative; }
.inst .ln   { background-image: linear-gradient(var(--ink), var(--ink)); background-size: 1px 100%; }
.inst .ln-b { background-image: linear-gradient(var(--ink), var(--ink)); background-size: 1px 50%; background-position: center bottom; }
.inst .ln-t { background-image: linear-gradient(var(--ink), var(--ink)); background-size: 1px 50%; background-position: center top; }
.inst .stack { flex-direction: column; justify-content: flex-end; gap: 0; min-height: 196px; padding: 8px 0 6px; }
.inst .stack .g { width: 19px; height: 19px; margin-top: -1px; }
.inst .is-free .g { fill: var(--white); stroke: var(--ink); }
.inst .is-on .g { box-shadow: none; }
.inst--capa .c { min-height: 46px; }
.inst--capa .inst__lab:nth-of-type(3) { border-top: 0; }
.band {
  grid-column: 2 / -1;
  display: flex; align-items: center; gap: 10px;
  height: 34px; margin: 6px 0 12px; padding: 0 14px;
  background: var(--ink); color: #fff;
  font: 500 11.5px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase;
  box-shadow: 0 3px 0 var(--cyan), 0 6px 0 var(--yellow);
}
.band em { font-style: normal; font-weight: 400; color: #AEB8BF; letter-spacing: .06em; }
.band .g { width: 12px; height: 12px; fill: #fff; stroke: none; vertical-align: 0; }

/* preguntas de la capa */
.qs {
  display: grid; grid-template-columns: repeat(5, 1fr);
  margin-top: clamp(40px, 4vw, 56px);
  border-top: 1px solid var(--ink); border-bottom: 1px solid var(--rule);
  background: var(--white);
}
.qs li { display: grid; grid-template-rows: auto auto auto 1fr; padding: 14px 18px 22px; }
.qs li + li { border-left: 1px solid var(--rule); }
.qs__n { font: 400 11px/1 var(--mono); color: var(--ink-3); }
.qs__f { display: flex; align-items: center; gap: 8px; margin: 18px 0 16px; font: 400 14px/1 var(--mono); color: var(--ink-3); }
.qs__f .g { width: 20px; height: 20px; vertical-align: 0; }
.qs h3 { font-size: 19px; letter-spacing: -.02em; }
.qs p { margin-top: 8px; font-size: 14.5px; line-height: 1.45; color: var(--ink-2); }
.qs .is-open { background: var(--bg); }
.qs .is-open h3 { color: var(--ink-3); letter-spacing: .1em; }

/* cita + su notación */
.quote {
  display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--cg);
  align-items: center;
  margin-top: clamp(40px, 4.5vw, 64px);
}
.quote__eq { grid-column: 1 / span 4; display: grid; gap: 14px; }
.quote__eq p { display: grid; grid-template-columns: 150px auto 28px; justify-content: start; align-items: center; gap: 14px; }
.quote__eq .many { display: flex; justify-content: flex-end; gap: 4px; }
.quote__eq { padding: 22px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.quote__eq .g { width: 22px; height: 22px; }
.quote__eq .many .g { width: 18px; height: 18px; }
.quote__eq b { font: 400 16px/1 var(--mono); color: var(--ink-3); }
.quote blockquote { grid-column: 6 / span 7; }
.quote blockquote p { font-size: clamp(26px, 2.7vw, 38px); line-height: 1.12; letter-spacing: -.03em; font-weight: 500; text-wrap: balance; }

/* ---------- principios ---------- */

.princ { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--cg); }
.princ__h { grid-column: 1 / span 4; position: sticky; top: 96px; align-self: start; }
.princ__list { grid-column: 5 / span 8; border-top: 1px solid var(--ink); }
.princ__list li {
  display: grid; grid-template-columns: 44px minmax(0, 1fr) minmax(0, 1.25fr) 132px; column-gap: 20px;
  align-items: start;
  padding: 18px 0 20px; border-bottom: 1px solid var(--rule);
}
.princ__n { font: 400 11.5px/1.6 var(--mono); color: var(--ink-3); padding-top: 2px; }
.princ__list h3 { font-size: 18px; letter-spacing: -.02em; }
.princ__list p { font-size: 14.5px; line-height: 1.45; color: var(--ink-2); }
.formula { display: flex; align-items: center; justify-content: flex-end; gap: 6px; font: 400 14px/1 var(--mono); color: var(--ink-3); padding-top: 2px; }
.formula .g { width: 18px; height: 18px; vertical-align: 0; }
.formula sub { font-size: 10px; align-self: flex-end; margin-left: -4px; }
.perim { display: inline-flex; align-items: center; gap: 6px; padding: 6px 8px; border: 1px solid var(--ink); background: color-mix(in srgb, var(--steel) 45%, white); }
.perim .g { width: 14px; height: 14px; }

/* ---------- métricas como cotas ---------- */

.head-row { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--cg); align-items: end; margin-bottom: clamp(28px, 3vw, 40px); }
.head-row h2 { grid-column: 1 / span 7; }
.head-row__note { grid-column: 9 / span 4; text-transform: none; letter-spacing: .01em; font-size: 12px; }
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink); background: var(--white); border-bottom: 1px solid var(--rule); }
.metric { padding: 14px 20px 22px; display: flex; flex-direction: column; }
.metric + .metric { border-left: 1px solid var(--rule); }
.metric__n { font: 400 11px/1 var(--mono); color: var(--ink-3); }
.metric__v { display: flex; align-items: center; gap: 12px; margin-top: 18px; font-size: clamp(34px, 3.2vw, 48px); font-weight: 400; letter-spacing: -.04em; line-height: 1; white-space: nowrap; }
.metric__v .g { width: 16px; height: 16px; flex: none; vertical-align: 0; }
.metric__d { width: 100%; max-width: 280px; height: auto; margin: 22px 0 16px; overflow: visible; }
.metric__c { margin-top: auto; font-size: 14px; line-height: 1.4; color: var(--ink-2); max-width: 30ch; }

svg .t { font: 400 10.5px var(--mono); fill: var(--ink-3); letter-spacing: .02em; }
svg .dia path { fill: var(--yellow); stroke: var(--ink); stroke-width: 1; }
svg .cota path { fill: none; stroke: var(--ink-3); stroke-width: 1; }
svg .bar { fill: var(--white); stroke: var(--ink); stroke-width: 1; }
svg .bar--on { fill: var(--cyan); }
svg .tri-other { fill: var(--white); stroke: var(--ink-3); stroke-width: 1; }
svg .tri-ours { fill: var(--ink); }
svg .sq { fill: var(--steel); stroke: var(--ink); stroke-width: 1; }
svg .ln { stroke: var(--ink); stroke-width: 1; }
svg .bandr { fill: var(--ink); }
svg .f1 { stroke: var(--cyan); stroke-width: 2.5; }
svg .f2 { stroke: var(--yellow); stroke-width: 2.5; }
svg .tri { fill: var(--cyan); stroke: var(--ink); stroke-width: 1; }
svg .loop { fill: none; stroke: var(--ink-3); stroke-width: 1; stroke-dasharray: 2 3; }
svg .open { fill: none; stroke: var(--ink-3); stroke-width: 1; stroke-dasharray: 2.5 2; }

/* ---------- laboratorio ---------- */

.glist { margin-top: 26px; border-top: 1px solid var(--ink); }
.glist li {
  display: grid; grid-template-columns: 26px 118px 1fr; align-items: baseline; column-gap: 8px;
  padding: 11px 0; border-bottom: 1px solid var(--rule); font-size: 14.5px; line-height: 1.4;
}
.glist .g { width: 13px; height: 13px; vertical-align: 0; transform: translateY(1px); }
.glist b { font-weight: 500; font-size: 15.5px; }
.glist span { color: var(--ink-2); }
.split__text > .btn { margin-top: 28px; }
.split--lab > .plate { position: sticky; top: 96px; }

.lb__plot { --name: 150px; --val: 52px; padding-top: 6px; }
.lb__rows { position: relative; }
.lb__grid { position: absolute; top: -8px; bottom: -6px; left: calc(var(--name) + 12px); right: calc(var(--val) + 12px); display: flex; justify-content: space-between; pointer-events: none; }
.lb__grid i { width: 1px; background: var(--grid); }
.lb__grid i:first-child, .lb__grid i:last-child { background: var(--rule); }
.lb__plot ol { position: relative; display: grid; gap: 2px; }
.lb__plot li { display: grid; grid-template-columns: var(--name) 1fr var(--val); column-gap: 12px; align-items: center; height: 40px; }
.lb__m { display: flex; align-items: center; gap: 8px; font: 400 12.5px/1.2 var(--mono); color: var(--ink-2); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lb__m .g { width: 12px; height: 12px; vertical-align: 0; }
.lb__t { position: relative; height: 14px; }
.lb__t i { position: absolute; left: 0; top: 0; bottom: 0; width: calc((var(--v) - .8) / .2 * 100%); background: var(--white); border: 1px solid var(--ink-3); }
.lb__plot b { font: 500 13px/1 var(--mono); text-align: right; }
.lb__plot .is-ours .lb__m { color: var(--ink); font-weight: 500; }
.lb__plot .is-ours .lb__t { height: 22px; }
.lb__plot .is-ours .lb__t i { background: var(--ink); border-color: var(--ink); box-shadow: 0 2px 0 var(--cyan), 0 4px 0 var(--yellow); }
.lb__plot .is-ours b { font-size: 15px; }
.lb__axis { display: flex; justify-content: space-between; margin: 10px calc(var(--val) + 12px) 0 calc(var(--name) + 12px); font: 400 10.5px/1 var(--mono); color: var(--ink-3); }
.lb__axis span:first-child { transform: translateX(-50%); }
.lb__axis span:last-child { transform: translateX(50%); }

/* ---------- notas ---------- */

.notes { border-top: 1px solid var(--ink); }
.notes a {
  display: grid; grid-template-columns: 64px 96px minmax(0, 5fr) minmax(0, 6fr); column-gap: 20px; align-items: center;
  padding: 14px 0; border-bottom: 1px solid var(--rule); text-decoration: none;
  transition: background-color .15s;
}
.notes a:hover { background: var(--white); }
.notes a:hover b { text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.notes__n { font: 400 11.5px/1 var(--mono); color: var(--ink-3); }
.notes__f { display: flex; align-items: center; gap: 5px; font: 400 13px/1 var(--mono); color: var(--ink-3); }
.notes__f .g { width: 15px; height: 15px; vertical-align: 0; }
.notes b { font-weight: 500; font-size: 17px; letter-spacing: -.015em; }
.notes a > span:last-child { font-size: 14.5px; color: var(--ink-2); line-height: 1.4; }

/* ---------- instituciones ---------- */

.split--inst { align-items: end; }
.sectors { grid-column: 7 / span 6; display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--ink); background: var(--white); border-bottom: 1px solid var(--rule); }
.sectors li { display: flex; flex-direction: column; gap: 6px; padding: 14px 14px 18px; font-size: 15px; font-weight: 500; line-height: 1.2; letter-spacing: -.01em; min-height: 132px; }
.sectors li + li { border-left: 1px solid var(--rule); }
.sectors__top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: auto; padding-bottom: 20px; }
.sectors .g { width: 26px; height: 26px; }
.sectors .mono { font-size: 10.5px; }

/* ---------- método ---------- */

.steps { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ink); }
.steps li { padding: 14px 20px 8px 0; }
.steps li + li { padding-left: 20px; border-left: 1px solid var(--rule); }
.steps__n { font: 400 11px/1 var(--mono); color: var(--ink-3); }
.steps__d { display: block; width: 100%; max-width: 220px; height: auto; margin: 16px 0 14px; overflow: visible; }
.steps p { font-size: 15.5px; line-height: 1.4; font-weight: 500; letter-spacing: -.01em; max-width: 26ch; }

/* ---------- contacto ---------- */

.cta { background: var(--white); border-top: 1px solid var(--ink); margin-top: var(--sec); }
.cta__in { display: grid; grid-template-columns: repeat(12, 1fr); column-gap: var(--cg); row-gap: 40px; align-items: center; padding-top: clamp(48px, 6vw, 88px); padding-bottom: clamp(48px, 6vw, 88px); }
.cta__text { grid-column: 1 / span 7; }
.cta h2 { font-size: clamp(34px, 4.2vw, 60px); max-width: 16ch; }
.cta__text > p:not(.eyebrow):not(.actions) { margin-top: 20px; color: var(--ink-2); font-size: 18px; }
.cta .actions { margin-top: 28px; gap: 20px; }
.cta__mail { text-decoration: none; font-size: 12px; text-transform: none; }
.cta__mail:hover { color: var(--ink); text-decoration: underline; }
.cta__eq { grid-column: 9 / span 4; display: flex; align-items: flex-start; justify-content: space-between; padding: 36px 28px 28px; border: 1px solid var(--rule); }
.cta__eq div { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.cta__eq .g { width: 52px; height: 52px; }
.cta__eq span { font: 400 11px/1 var(--mono); color: var(--ink-3); text-transform: uppercase; letter-spacing: .06em; white-space: nowrap; }
.cta__eq b { font: 400 18px/52px var(--mono); color: var(--ink-3); }

/* ---------- pie ---------- */

.foot { border-top: 1px solid var(--ink); }
.foot__in { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; padding-top: 20px; padding-bottom: 24px; }
.foot .brand { font-size: 13px; }
.foot .brand img { width: 18px; height: 18px; }
.foot__key { margin-left: auto; display: flex; gap: 8px; }
.foot__key .g { width: 12px; height: 12px; --stroke: 1px; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1180px) {
  .nav a { padding: 8px 7px; font-size: 13.5px; }
  .hero__text { grid-column: 1 / span 7; }
  .key { grid-column: 8 / span 5; }
  .split__text { grid-column: 1 / span 5; }
  .split > .plate { grid-column: 6 / span 7; }
  .princ__list li { grid-template-columns: 36px minmax(0, 1fr) 112px; row-gap: 6px; }
  .princ__list p { grid-column: 2; grid-row: 2; }
  .formula { grid-column: 3; grid-row: 1 / span 2; }
  .sectors { grid-column: 6 / span 7; }
  .lb__plot { --name: 130px; }
}

@media (max-width: 1040px) {
  .nav { display: none; }
  .menu {
    display: inline-flex; align-items: center; gap: 10px; margin-left: auto;
    height: 36px; padding: 0 12px; background: transparent; border: 1px solid var(--ink);
    font: 400 12px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--ink); cursor: pointer;
  }
  .menu__g { display: inline-flex; gap: 3px; }
  .menu__g i { width: 6px; height: 6px; background: var(--ink); }
  .menu__g i:nth-child(2) { border-radius: 50%; }
  .menu__g i:nth-child(3) { transform: rotate(45deg) scale(.85); background: var(--yellow); outline: 1px solid var(--ink); }
  .nav.is-open {
    display: block; position: absolute; top: 60px; left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--ink);
  }
  .nav.is-open ol { display: grid; grid-template-columns: repeat(2, 1fr); padding: 8px var(--gutter) 16px; }
  .nav.is-open a { padding: 12px 0; font-size: 16px; border-bottom: 1px solid var(--rule); width: 100%; }
  .nav.is-open .g { width: 12px; height: 12px; }

  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metric:nth-child(3) { border-left: 0; }
  .metric:nth-child(n+3) { border-top: 1px solid var(--rule); }
  .split--lab .split__text { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; column-gap: var(--cg); }
  .split--lab .split__text > * { grid-column: 1; }
  .split--lab .glist { grid-column: 2; grid-row: 1 / span 3; margin-top: 0; }
  .split--lab > .plate { grid-column: 1 / -1; }
  .split--inst .split__text, .sectors { grid-column: 1 / -1; }
  .split--lab .split__text > .btn { justify-self: start; }
  .quote__eq { grid-column: 1 / span 4; }
  .quote blockquote { grid-column: 5 / span 8; }
}

@media (max-width: 860px) {
  .hero__text, .key { grid-column: 1 / -1; }
  .key { margin-top: 40px; }
  .hero__cols { grid-template-columns: repeat(4, 1fr); }
  .hero__cols i:nth-child(n+5) { display: none; }
  .facts { grid-template-columns: repeat(2, 1fr); }
  .facts li:nth-child(3) { border-left: 0; padding-left: 0; }
  .facts li:nth-child(n+3) { border-top: 1px solid var(--rule); }
  .split__text, .split > .plate { grid-column: 1 / -1; }
  .princ__h { grid-column: 1 / -1; position: static; margin-bottom: 24px; }
  .princ__list { grid-column: 1 / -1; }
  .head-row h2, .head-row__note { grid-column: 1 / -1; }
  .head-row__note { margin-top: 12px; }
  .cta__text, .cta__eq { grid-column: 1 / -1; }
  .cta__eq { max-width: 420px; }
  .quote__eq, .quote blockquote { grid-column: 1 / -1; }
  .quote__eq { max-width: 280px; margin-bottom: 20px; }
  .quote__eq .many { justify-content: flex-start; }
  .quote__eq p { grid-template-columns: 140px auto 28px; }
  .notes a { grid-template-columns: 52px 80px 1fr; row-gap: 4px; }
  .notes a > span:last-child { grid-column: 3; }
  .qs { grid-template-columns: 1fr; background: transparent; }
  .qs li { grid-template-columns: 48px 1fr auto; grid-template-rows: auto auto; column-gap: 12px; padding: 14px 0 16px; }
  .qs li + li { border-left: 0; border-top: 1px solid var(--rule); }
  .qs__n { grid-column: 1; grid-row: 1; padding-top: 5px; }
  .qs h3 { grid-column: 2; grid-row: 1; }
  .qs__f { grid-column: 3; grid-row: 1; margin: 0; }
  .qs p { grid-column: 2 / -1; grid-row: 2; }
  .qs .is-open { background: transparent; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .steps li:nth-child(3) { border-left: 0; padding-left: 0; }
  .steps li:nth-child(n+3) { border-top: 1px solid var(--rule); }
  .sectors { grid-template-columns: 1fr; background: transparent; }
  .sectors li { flex-direction: row; align-items: center; gap: 14px; min-height: 0; padding: 12px 0; font-size: 17px; }
  .sectors li + li { border-left: 0; border-top: 1px solid var(--rule); }
  .sectors__top { display: contents; }
  .sectors .g { width: 18px; height: 18px; order: 0; }
  .sectors .mono { order: 2; margin-left: auto; }
}

@media (max-width: 600px) {
  body { font-size: 16px; }
  .top .btn--sm { display: none; }
  .eyebrow { font-size: 10.5px; gap: 10px; margin-bottom: 22px; }
  h1 { font-size: 40px; letter-spacing: -.038em; }
  h2 { font-size: 31px; }
  .key { padding: 14px 14px 16px; }
  .key__list > div { grid-template-columns: 104px 1fr; }
  .facts { grid-template-columns: 1fr; }
  .facts li, .facts li + li { padding: 14px 0 16px; border-left: 0; }
  .facts li + li { border-top: 1px solid var(--rule); }
  .rot { grid-template-columns: 40px 1fr auto; gap: 10px; font-size: 10.5px; }
  .plate { padding: 12px 12px 16px; }
  .plate__head { flex-direction: column; gap: 4px; font-size: 13px; }
  .inst { --gs: 18px; grid-template-columns: 64px repeat(5, 1fr); }
  .inst__lab { font-size: 9px; letter-spacing: .03em; }
  .inst .stack .g { width: 14px; height: 14px; }
  .band em { display: none; }
  .princ__list li { grid-template-columns: 30px minmax(0, 1fr) auto; column-gap: 12px; }
  .princ__list p { grid-column: 2 / -1; }
  .formula { grid-row: 1; }
  .formula .g { width: 15px; height: 15px; }
  .formula { gap: 4px; }
  .metrics { grid-template-columns: 1fr; }
  .metric, .metric + .metric { border-left: 0; padding: 14px 0 20px; }
  .metric + .metric { border-top: 1px solid var(--rule); }
  .metrics { background: transparent; }
  .split--lab .split__text { display: block; }
  .split--lab .glist { margin-top: 24px; }
  .glist li { grid-template-columns: 22px 1fr; }
  .glist span { grid-column: 2; }
  .lb__plot { --name: 112px; --val: 40px; }
  .lb__m { font-size: 11px; }
  .notes a { grid-template-columns: 44px 1fr; column-gap: 12px; padding: 14px 0; }
  .notes__f { grid-column: 2; grid-row: 1; }
  .notes__n { grid-row: 1; }
  .notes b, .notes a > span:last-child { grid-column: 2; }
  .steps li { padding: 12px 12px 14px 0; }
  .steps li + li { padding-left: 12px; }
  .steps li:nth-child(3) { padding-left: 0; }
  .steps p { font-size: 14.5px; }
  .steps__d { margin: 12px 0 10px; }
  .metric__d { max-width: 250px; }
  .cta__eq { padding: 24px 16px 20px; }
  .cta__eq .g { width: 40px; height: 40px; }
  .cta__eq b { line-height: 40px; }
  .foot__key { margin-left: 0; }
}