/* Rententu — hoja de estilos general */

:root{
  --bg:#f1f2f0;
  --bg-alt:#e3e5e2;
  --bg-dark:#141614;
  --ink:#171917;
  --ink-soft:#6a6e6a;
  --ink-inv:#f1f2f0;
  --ink-inv-soft:#a8ada8;
  --accent:#2a6b3c;
  --accent-2:#8a6a20;
  --mono:ui-monospace,Consolas,"Liberation Mono",monospace;
  --sans:system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}

html{-webkit-text-size-adjust:100%;}

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.75;
  overflow-x:hidden;
}

img{max-width:100%;height:auto;display:block;}

a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
a:hover{text-decoration-thickness:2px;}

a:focus-visible,
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}

.dark a:focus-visible{outline-color:var(--accent-2);}

/* ---------- rejilla ---------- */

.wrap{max-width:1180px;margin:0 auto;padding:0 32px;}

.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  column-gap:24px;
}

.s3{grid-column:span 3;}
.s4{grid-column:span 4;}
.s5{grid-column:span 5;}
.s6{grid-column:span 6;}
.s7{grid-column:span 7;}
.s12{grid-column:1 / -1;}

.col-1-6{grid-column:1 / span 6;}
.col-4-6{grid-column:4 / span 6;}
.col-8-5{grid-column:8 / span 5;}
.col-10-3{grid-column:10 / span 3;}
.col-1-4{grid-column:1 / span 4;}
.col-1-3{grid-column:1 / span 3;}

/* ---------- tipografía ---------- */

h1,h2,h3,.mono{
  font-family:var(--mono);
  text-transform:uppercase;
  font-weight:600;
}

h1{
  font-size:clamp(26px,3.4vw,42px);
  line-height:1.22;
  letter-spacing:0.02em;
  margin:0 0 32px;
}

h1 .l1{display:block;padding-left:29%;}
h1 .l2{display:block;}

h2{
  font-size:clamp(17px,1.6vw,21px);
  line-height:1.45;
  letter-spacing:0.08em;
  margin:0 0 20px;
}

h3{
  font-size:14px;
  line-height:1.5;
  letter-spacing:0.11em;
  margin:32px 0 12px;
}

p{margin:0 0 20px;}
p:last-child{margin-bottom:0;}

.lead{font-size:19px;line-height:1.7;}

.num{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:0.22em;
  color:var(--accent-2);
  display:block;
  margin-bottom:10px;
}

.cap{
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:0.14em;
  line-height:1.65;
  text-transform:uppercase;
  color:var(--ink-soft);
}

.note{color:var(--ink-soft);font-size:15.5px;line-height:1.7;}

.rule{
  grid-column:1 / span 2;
  height:1px;
  background:var(--accent-2);
  margin:0 0 28px;
}

.rule-shift{grid-column:4 / span 2;}

/* ---------- listas ---------- */

ul.list,ol.list{
  margin:0 0 20px;
  padding:0;
  list-style:none;
}

ul.list li,ol.list li{
  position:relative;
  padding-left:22px;
  margin-bottom:10px;
}

ul.list li::before{
  content:"";
  position:absolute;
  left:0;
  top:13px;
  width:9px;
  height:1px;
  background:var(--accent);
}

ol.list{counter-reset:it;}
ol.list li{padding-left:34px;}
ol.list li::before{
  counter-increment:it;
  content:counter(it,decimal-leading-zero);
  position:absolute;
  left:0;
  top:1px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:0.12em;
  color:var(--accent-2);
}

.dark ul.list li::before{background:var(--accent-2);}

/* ---------- cabecera y navegación ---------- */

.site-head{padding-top:28px;}

.nav ul{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:10px 28px;
}

.nav a{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:0.2em;
  text-transform:uppercase;
  text-decoration:none;
  color:var(--ink);
}

.nav a:hover,.nav a[aria-current="page"]{
  color:var(--accent);
  border-bottom:1px solid var(--accent);
}

.brand{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:0.3em;
  text-transform:uppercase;
  text-decoration:none;
  color:var(--ink);
  border-bottom:1px solid var(--accent);
}

.head-row{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:16px 40px;
}

.head-line{
  grid-column:1 / span 5;
  height:1px;
  background:var(--accent);
  margin:22px 0 0;
}

/* ---------- portada ---------- */

.hero{padding:56px 0 32px;}

.hero .eyebrow{
  grid-column:1 / span 7;
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:0.24em;
  text-transform:uppercase;
  color:var(--accent-2);
  margin:0 0 18px;
}

.topics{
  list-style:none;
  margin:6px 0 0;
  padding:0;
  border-bottom:1px solid #c9ccc8;
}

.topics li{
  border-top:1px solid #c9ccc8;
  padding:9px 0;
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--ink-soft);
  line-height:1.5;
}

.topics li span{color:var(--accent-2);margin-right:9px;}

.hero-figure{margin:0;}

.hero-figure .frame{
  border:1px solid var(--accent);
  padding:8px;
}

figure{margin:0;}

.figrow{align-items:end;row-gap:18px;margin-top:40px;}

/* ---------- secciones ---------- */

main section{padding:32px 0;}

section.band{background:var(--bg-alt);padding:64px 0;}

section.dark{
  background:var(--bg-dark);
  color:var(--ink-inv);
  padding:64px 0;
}

.dark h2,.dark h3{color:var(--ink-inv);}
.dark .cap,.dark .note{color:var(--ink-inv-soft);}
.dark .rule{background:var(--accent-2);}
.dark a{color:#9fd0ac;}

.dark-figure .frame{border:1px solid var(--accent-2);padding:8px;}

.dark-grid{row-gap:32px;align-items:start;}

.col-2-4{grid-column:2 / span 4;}
.col-7-5{grid-column:7 / span 5;}

/* ---------- páginas interiores ---------- */

.page-head{padding:48px 0 8px;}
.page-head h1 .l1{padding-left:0;}

.doc{padding-bottom:56px;}

.doc .block{margin-bottom:56px;}
.doc .block:last-child{margin-bottom:0;}

.doc h2{
  position:relative;
  padding-left:38px;
}

.doc h2::before{
  content:"";
  position:absolute;
  left:0;
  top:12px;
  width:24px;
  height:1px;
  background:var(--accent);
}

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

.site-foot{
  padding:0 0 64px;
  margin-top:32px;
}

.foot-line{
  grid-column:1 / span 5;
  height:1px;
  background:var(--accent);
  margin-bottom:28px;
}

.foot-a{grid-column:1 / span 5;}
.foot-b{grid-column:6 / span 3;}
.foot-c{grid-column:9 / span 4;}

.foot-a .name{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:0.3em;
  text-transform:uppercase;
  margin:0 0 12px;
}

.foot-nav ul{list-style:none;margin:0;padding:0;}
.foot-nav li{margin-bottom:8px;}

.foot-nav a,.foot-c a{
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:0.12em;
  text-transform:uppercase;
}

.foot-c p{margin-bottom:12px;}

/* ---------- adaptación ---------- */

@media (max-width:960px){
  .wrap{padding:0 24px;}
  .grid{column-gap:18px;}
  h1 .l1{padding-left:14%;}
  .col-1-6,.col-4-6,.col-8-5,.col-1-4,.col-1-3,.s6,.s7{grid-column:1 / -1;}
  .col-10-3{grid-column:1 / -1;}
  .col-2-4{grid-column:1 / span 6;}
  .col-7-5{grid-column:1 / -1;}
  .rule,.rule-shift{grid-column:1 / span 3;}
  .head-line,.foot-line{grid-column:1 / span 8;}
  .foot-a{grid-column:1 / span 7;}
  .foot-b{grid-column:8 / span 5;}
  .foot-c{grid-column:1 / -1;margin-top:28px;}
  .figrow{margin-top:32px;}
  .hero-figure{margin-bottom:18px;}
}

@media (max-width:640px){
  body{font-size:16.5px;}
  .wrap{padding:0 20px;}
  .grid{grid-template-columns:1fr;column-gap:0;}
  .s3,.s4,.s5,.s6,.s7,.s12,
  .col-1-6,.col-4-6,.col-8-5,.col-10-3,.col-1-4,.col-1-3,
  .col-2-4,.col-7-5,
  .foot-a,.foot-b,.foot-c,
  .head-line,.foot-line,.rule,.rule-shift,
  .hero .eyebrow{grid-column:1 / -1;}
  .rule,.rule-shift{width:96px;}
  .head-line,.foot-line{width:70%;}
  h1 .l1{padding-left:0;}
  main section{padding:20px 0;}
  section.band,section.dark{padding:40px 0;}
  .doc .block{margin-bottom:44px;}
  .hero{padding:36px 0 20px;}
  .nav ul{gap:10px 20px;}
  .foot-c{margin-top:24px;}
}