/* Skoluzobi — hoja de estilos común
   Composición de eje espejo, papel frío, negro y verde */

:root{
  --paper:#f1f2f0;
  --paper-alt:#e3e5e2;
  --ink:#141614;
  --text:#171917;
  --muted:#6a6e6a;
  --on-dark:#f1f2f0;
  --accent:#2a6b3c;
  --accent-2:#8a6a20;
  --rule:#d4d7d2;
  --serif:Georgia,'Times New Roman',serif;
  --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(--paper);
  color:var(--text);
  font-family:var(--sans);
  font-size:18px;
  line-height:1.9;
  overflow-x:hidden;
}

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

a{color:var(--accent);text-decoration:none;border-bottom:1px solid rgba(42,107,60,.4)}
a:hover{border-bottom-color:var(--accent)}

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

/* ---------- retícula ---------- */

.wrap{max-width:1160px;margin:0 auto;padding:0 24px}

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

.axis{position:relative}
.axis::before{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  bottom:0;
  width:1px;
  transform:translateX(-.5px);
  background:linear-gradient(to bottom,
    rgba(42,107,60,0),
    rgba(42,107,60,.45) 10%,
    rgba(42,107,60,.45) 90%,
    rgba(42,107,60,0));
}

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

h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.3;margin:0}

h1{font-size:clamp(30px,4.4vw,45px);letter-spacing:.005em}
h2{font-size:clamp(24px,2.8vw,32px);margin-bottom:22px}
h3{font-size:21px;margin:34px 0 12px}

p{margin:0 0 26px}
p:last-child{margin-bottom:0}

.kicker{
  font-size:14px;
  line-height:1.6;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--accent-2);
  margin:0 0 26px;
}

.num{
  display:block;
  font-size:14px;
  letter-spacing:.24em;
  color:var(--accent-2);
  margin-bottom:12px;
}

.caption,figcaption{
  font-size:14px;
  line-height:1.65;
  color:var(--muted);
}

.lead{font-size:19px}

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

.site-head{background:var(--paper);border-bottom:1px solid var(--rule)}
.site-head .wrap{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
  padding-top:26px;
  padding-bottom:24px;
}

.brand{
  font-family:var(--serif);
  font-size:19px;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--text);
  border:0;
}
.brand:hover{color:var(--accent)}

.nav ul{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:center;
}
.nav li{display:flex;align-items:center}
.nav li + li::before{
  content:"·";
  color:var(--accent-2);
  padding:0 14px;
}
.nav a{
  font-size:15px;
  letter-spacing:.04em;
  color:var(--text);
  border-bottom:1px solid transparent;
  padding:2px 0;
}
.nav a:hover{border-bottom-color:var(--accent)}
.nav a[aria-current="page"]{border-bottom-color:var(--accent-2);color:var(--muted)}

/* ---------- ritmo de secciones ---------- */

.sec{padding:64px 0}
.sec--md{padding:80px 0}
.sec--lg{padding:96px 0}
.sec--alt{background:var(--paper-alt)}

.hero{padding:88px 0 92px}

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

.hero .kicker{grid-column:1 / -1;text-align:center}

.hero h1{
  grid-column:2 / span 10;
  text-align:center;
  background:var(--paper);
  padding:0 12px 6px;
}

.hero-lead{
  grid-column:4 / span 6;
  text-align:center;
  background:var(--paper);
  padding:22px 14px 0;
  font-size:19px;
}

.flank{
  margin-top:54px;
  padding-top:16px;
  border-top:1px solid var(--accent-2);
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}
.flank strong{
  display:block;
  font-family:var(--serif);
  font-weight:400;
  font-size:17px;
  color:var(--text);
  margin-bottom:8px;
}
.flank--l{grid-column:2 / span 3}
.flank--r{grid-column:9 / span 3}

/* ---------- imágenes ---------- */

.figure-main{
  grid-column:1 / -1;
  margin:0;
  display:flex;
  flex-direction:column;
  align-items:center;
}
.figure-main img{
  display:block;
  width:100%;
  max-width:680px;
  height:auto;
}
.figure-main figcaption{
  max-width:600px;
  margin-top:16px;
  text-align:center;
}

/* ---------- bloques de texto ---------- */

.centered{grid-column:4 / span 6;text-align:center}
.body-centered{grid-column:4 / span 6}
.narrative{grid-column:1 / span 7}
.narrative--right{grid-column:6 / span 7}
.pair-l{grid-column:2 / span 4}
.pair-r{grid-column:8 / span 4}
.full{grid-column:1 / -1}
.head-centered{grid-column:3 / span 8;text-align:center;margin-bottom:34px}

.spacer-top{margin-top:44px}

/* ---------- separador de arco ---------- */

.arc-row{display:grid;grid-template-columns:repeat(12,1fr);column-gap:24px}
.arc{
  grid-column:5 / span 4;
  height:30px;
  border-top:1px solid var(--accent-2);
  border-radius:50% 50% 0 0 / 100% 100% 0 0;
  opacity:.75;
}

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

.list{list-style:none;margin:0 0 26px;padding:0}
.list li{position:relative;padding-left:26px;margin-bottom:14px}
.list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.9em;
  width:11px;
  height:1px;
  background:var(--accent);
}

.steps{list-style:none;margin:0 0 26px;padding:0;counter-reset:step}
.steps li{position:relative;padding-left:40px;margin-bottom:18px;counter-increment:step}
.steps li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;
  left:0;
  top:.35em;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--accent-2);
}

/* ---------- sección contrastada ---------- */

.dark{background:var(--ink);color:var(--on-dark)}
.dark h2,.dark h3{color:var(--on-dark)}
.dark .num,.dark .kicker{color:#c4a566}
.dark .caption,.dark figcaption{color:#9ca19c}
.dark a{color:#8fc9a0;border-bottom-color:rgba(143,201,160,.45)}
.dark .list li::before{background:#8fc9a0}
.dark .arc{border-top-color:#c4a566}

.dark-figure{
  grid-column:2 / span 4;
  margin:0;
  align-self:start;
}
.dark-figure img{display:block;width:100%;height:auto}
.dark-figure figcaption{margin-top:14px}
.dark-text{grid-column:7 / span 5}

/* ---------- datos en pares (About) ---------- */

.fact{
  padding-top:18px;
  border-top:1px solid var(--rule);
}
.fact h3{margin:0 0 10px;font-size:19px}
.fact p{font-size:16px;line-height:1.8;color:var(--muted)}

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

.contact-line{
  font-family:var(--serif);
  font-size:21px;
  line-height:1.6;
}

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

.site-foot{padding:0 0 64px;background:var(--paper)}
.site-foot .arc-row{margin-bottom:38px}
.foot-inner{
  grid-column:2 / span 10;
  text-align:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:16px;
}
.foot-brand{
  font-family:var(--serif);
  font-size:18px;
  letter-spacing:.3em;
  text-transform:uppercase;
}
.foot-note{
  font-size:14px;
  line-height:1.8;
  color:var(--muted);
  max-width:620px;
  margin:0;
}

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

@media (max-width:1000px){
  .flank--l{grid-column:1 / span 4}
  .flank--r{grid-column:9 / span 4}
  .hero h1{grid-column:1 / -1}
  .hero-lead{grid-column:3 / span 8}
  .centered,.body-centered{grid-column:3 / span 8}
  .head-centered{grid-column:2 / span 10}
  .narrative,.narrative--right{grid-column:1 / span 9}
  .pair-l{grid-column:1 / span 5}
  .pair-r{grid-column:7 / span 5}
  .dark-figure{grid-column:1 / span 5}
  .dark-text{grid-column:7 / span 6}
  .foot-inner{grid-column:1 / -1}
  .arc{grid-column:4 / span 6}
}

@media (max-width:720px){
  body{font-size:17px;line-height:1.85}
  .axis::before{display:none}
  .hero{padding:52px 0 48px}
  .sec,.sec--md,.sec--lg{padding:48px 0}
  .sec--lg{padding:56px 0}
  h3{font-size:19px}
  .hero h1,.hero-lead,.centered,.body-centered,.head-centered,
  .narrative,.narrative--right,.pair-l,.pair-r,
  .dark-figure,.dark-text,.foot-inner{grid-column:1 / -1}
  .hero h1{padding:0}
  .hero-lead{padding:20px 0 0;text-align:left;font-size:18px}
  .hero h1{text-align:left}
  .hero .kicker{text-align:left}
  .centered,.head-centered{text-align:left}
  .flank{margin-top:34px}
  .flank--l,.flank--r{grid-column:1 / -1}
  .flank--r{margin-top:26px}
  .dark-text{margin-top:34px}
  .arc{grid-column:1 / span 5;height:24px}
  .site-head .wrap{align-items:flex-start}
  .nav ul{justify-content:flex-start}
  .nav li + li::before{padding:0 10px}
  .foot-inner{text-align:left;align-items:flex-start}
  .site-foot{padding-bottom:48px}
  .contact-line{font-size:19px}
}

.text-center{text-align:center}