/* Zirdorvu — hoja de estilo común
   Retícula de 12 columnas con margen izquierdo pautado */

:root{
  --bg:#f4f5f7;
  --bg-alt:#ffffff;
  --dark:#23262b;
  --ink:#16181d;
  --ink-2:#656b75;
  --ink-dark:#f4f5f7;
  --blue:#2d5bd6;
  --blue-soft:rgba(45,91,214,.38);
  --blue-light:#a8bef2;
  --gold:#c9a00f;
  --line:#dde0e5;
  --line-dark:rgba(244,245,247,.22);
  --rh:72px;
  --serif:Georgia,'Times New Roman',serif;
  --sans:system-ui,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box}

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

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.8;
  overflow-x:hidden;
}

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

a{
  color:var(--blue);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
}
a:hover{text-decoration-color:var(--gold)}
a:focus-visible{
  outline:2px solid var(--blue);
  outline-offset:3px;
  text-decoration:none;
}

/* ---------- retícula ---------- */

.sheet{
  max-width:1180px;
  margin:0 auto;
  padding:0 24px;
  display:grid;
  grid-template-columns:repeat(12,1fr);
  column-gap:24px;
}

.gutter{
  grid-column:1 / 4;
  text-align:right;
  padding-right:28px;
  min-width:0;
}

.body{
  grid-column:4 / 13;
  border-left:1px solid var(--blue-soft);
  padding-left:36px;
  min-width:0;
}

.num{
  display:block;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--gold);
}

.initial{
  display:block;
  font-family:var(--serif);
  font-weight:400;
  color:var(--ink);
  line-height:.86;
  font-size:clamp(3.2rem,7vw,5.4rem);
}

.sec--dark .initial{color:var(--ink-dark)}

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

.sec{padding:var(--rh) 0}
.sec--alt{background:var(--bg-alt)}
.sec--dark{
  background:var(--dark);
  color:var(--ink-dark);
}
.sec--dark .body{border-left-color:rgba(201,160,15,.55)}
.sec--dark a{color:var(--blue-light)}
.sec--dark a:focus-visible{outline-color:var(--blue-light)}
.sec--dark .caption,.sec--dark .lead-note{color:#c2c7cf}

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

h1{
  font-size:clamp(2.05rem,5vw,3.4rem);
  line-height:1.16;
  letter-spacing:-.01em;
  max-width:17ch;
  margin:0 0 34px;
}

h2{
  font-size:clamp(1.3rem,2.3vw,1.7rem);
  line-height:1.3;
  margin:0 0 18px;
}

h3{
  font-size:1.05rem;
  line-height:1.5;
  margin:36px 0 10px;
  color:var(--ink);
}
.sec--dark h3{color:var(--ink-dark)}

p{margin:0 0 20px;max-width:36em}
p:last-child{margin-bottom:0}

.guide{
  border:0;
  border-top:1px solid var(--line);
  height:0;
  margin:0 0 26px;
  max-width:44em;
}
.sec--dark .guide{border-top-color:var(--line-dark)}

.rule-gold{
  border:0;
  border-top:1px solid var(--gold);
  height:0;
  width:34px;
  margin:0 0 10px auto;
}

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

ul,ol{max-width:44em;padding-left:22px;margin:0 0 22px}
li{margin-bottom:8px}
li::marker{color:var(--blue)}
.sec--dark li::marker{color:var(--blue-light)}

ul.check{list-style:none;padding-left:0}
ul.check li{position:relative;padding-left:28px}
ul.check li::before{
  content:"";
  position:absolute;
  left:0;
  top:.92em;
  width:14px;
  height:1px;
  background:var(--blue);
}
.sec--dark ul.check li::before{background:var(--blue-light)}

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

.hero{padding:calc(var(--rh) * 1.05) 0 var(--rh)}

.hero-lede{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:22px 0;
  max-width:36em;
}
.hero-lede p{margin:0}

/* ---------- imagen principal ---------- */

.figure-main{margin:0 auto;padding-bottom:var(--rh)}
.figure-main .caption{grid-column:1 / 4;text-align:right;padding-right:28px}
.figure-main .shot{grid-column:6 / 13;min-width:0}

.caption{
  font-size:12px;
  line-height:1.7;
  color:var(--ink-2);
  margin:0;
  max-width:28em;
}

/* ---------- sección contrastada con imagen de detalle ---------- */

.split{
  display:grid;
  grid-template-columns:repeat(9,1fr);
  column-gap:24px;
  row-gap:28px;
  align-items:start;
}
.split .shot-side{grid-column:1 / 5;min-width:0;margin:0}
.split .shot-side .caption{margin-top:10px;color:#c2c7cf}
.split .text-side{grid-column:5 / 10;min-width:0}
.split .text-side p,.split .text-side ul{max-width:32em}

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

.site-header{
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.site-header .sheet{padding-top:22px;padding-bottom:20px;align-items:baseline}

.brand{
  grid-column:1 / 4;
  text-align:right;
  padding-right:28px;
  font-family:var(--serif);
  font-size:1.1rem;
  letter-spacing:.03em;
  color:var(--ink);
  text-decoration:none;
}
.brand:hover{text-decoration:underline;text-decoration-color:var(--gold)}

.site-nav{
  grid-column:4 / 13;
  border-left:1px solid var(--blue-soft);
  padding-left:36px;
  display:flex;
  flex-wrap:wrap;
  gap:6px 26px;
}
.site-nav a{
  font-size:14px;
  color:var(--ink-2);
  text-decoration:none;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
}
.site-nav a:hover{color:var(--ink);border-bottom-color:var(--blue)}
.site-nav a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--gold)}

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

.site-footer{
  background:var(--bg-alt);
  border-top:1px solid var(--line);
  padding:var(--rh) 0 calc(var(--rh) * .7);
}
.footer-inner{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:24px 40px;
}
.footer-name{
  font-family:var(--serif);
  font-size:1.1rem;
  letter-spacing:.03em;
  margin:0 0 12px;
}
.footer-nav{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 0}
.footer-nav a{font-size:14px;color:var(--ink-2);text-decoration:none}
.footer-nav a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--gold)}
.footer-nav span{
  color:var(--gold);
  font-size:12px;
  padding:0 12px;
}
.footer-mail{text-align:right}
.footer-mail .caption{margin-bottom:4px;margin-left:auto}
.footer-note{
  font-size:12px;
  line-height:1.7;
  color:var(--ink-2);
  margin:26px 0 0;
  max-width:44em;
}

/* ---------- utilidades ---------- */

.lead-note{color:var(--ink-2)}
.mail-line{font-size:1rem}

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

@media (max-width:1040px){
  .gutter,.brand,.figure-main .caption{grid-column:1 / 3;padding-right:20px}
  .body,.site-nav{grid-column:3 / 13;padding-left:26px}
  .figure-main .shot{grid-column:5 / 13}
  .split .shot-side{grid-column:1 / 5}
  .split .text-side{grid-column:5 / 10}
}

@media (max-width:820px){
  :root{--rh:44px}
  body{font-size:16px;line-height:1.75}
  .sheet{grid-template-columns:1fr;column-gap:0}
  .gutter,.body,.brand,.site-nav,
  .figure-main .caption,.figure-main .shot{grid-column:1}
  .gutter{text-align:left;padding-right:0;margin-bottom:14px}
  .body,.site-nav{padding-left:18px}
  .brand{text-align:left;padding-right:0;margin-bottom:14px}
  .rule-gold{margin-left:0}
  .figure-main .caption{text-align:left;padding-right:0;margin-bottom:16px}
  .figure-main .caption .rule-gold{margin-left:0}
  .split{grid-template-columns:1fr}
  .split .shot-side,.split .text-side{grid-column:1}
  h1{max-width:none;margin-bottom:26px}
  .initial{font-size:3rem}
  .footer-inner{display:block}
  .footer-mail{text-align:left;margin-top:22px}
  .footer-mail .caption{margin-left:0}
  .footer-nav span{padding:0 9px}
}