/* Birova — folha de estilos comum a todas as páginas */

:root{
  --bg:#f7efe8;
  --bg-alt:#ece0d4;
  --bg-dark:#1e2746;
  --ink:#28201c;
  --ink-2:#7f6e63;
  --ink-inv:#f7efe8;
  --indigo:#2b3a6b;
  --gold:#a8802c;
  --line:#cdbaa9;
  --mono:ui-monospace,Consolas,"Liberation Mono",monospace;
  --sans:system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --gap:72px;
}

*{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%}

a{color:var(--indigo);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{text-decoration:none}

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

.band--dark a:focus-visible{outline-color:var(--gold)}

.wrap{max-width:1180px;margin:0 auto;padding:0 20px}

/* ---------- ligação de salto ---------- */

.skip{
  position:absolute;left:-9999px;top:0;
  background:var(--bg-dark);color:var(--ink-inv);
  font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  padding:10px 16px;z-index:5;
}
.skip:focus{left:0}

/* ---------- tipografia ---------- */

h1,h2,h3,.label,.sec-num,nav,.site-name{
  font-family:var(--mono);
  text-transform:uppercase;
  letter-spacing:.09em;
  font-weight:600;
}

h1{
  font-size:clamp(25px,4.1vw,44px);
  line-height:1.22;
  letter-spacing:.04em;
  margin:0;
}

h2{
  font-size:clamp(17px,2.1vw,22px);
  line-height:1.4;
  letter-spacing:.1em;
  margin:0 0 18px;
}

h3{
  font-size:15px;
  line-height:1.5;
  letter-spacing:.1em;
  color:var(--indigo);
  margin:30px 0 10px;
}

.band--dark h3{color:var(--gold)}

p{margin:0 0 18px}
p:last-child{margin-bottom:0}

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

.sec-num,.label{
  display:block;
  font-size:12px;
  letter-spacing:.2em;
  color:var(--gold);
  margin-bottom:10px;
}

.note{font-size:14.5px;line-height:1.65;color:var(--ink-2)}
.band--dark .note{color:#bfc7dd}

/* ---------- ritmo das secções ---------- */

.band{padding:var(--gap) 0}
.band--alt{background:var(--bg-alt)}
.band--dark{
  background:var(--bg-dark);
  color:var(--ink-inv);
  --line:#3b4670;
  --ink-2:#bfc7dd;
}
.band--dark a{color:#d9c08a}

.rule{height:9px;margin:0 0 30px}
.rule::before{content:"";display:block;height:2px;background:var(--indigo)}
.rule::after{content:"";display:block;height:1px;margin-top:6px;background:var(--gold)}
.band--dark .rule::before{background:var(--gold)}
.band--dark .rule::after{background:#6f7ba8}

/* ---------- grelha de células tecidas ---------- */

.weave{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  border-top:1px solid var(--line);
  border-left:1px solid var(--line);
}
.weave > *{
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:26px 24px;
  min-width:0;
}
.weave > .bare{padding:0}

.c3{grid-column:span 3}
.c4{grid-column:span 4}
.c5{grid-column:span 5}
.c6{grid-column:span 6}
.c7{grid-column:span 7}
.c8{grid-column:span 8}
.c9{grid-column:span 9}
.c12{grid-column:span 12}

.stack{max-width:64ch}

/* ---------- cabeçalho ---------- */

.site-header{padding:20px 0 0}
.head-bar{
  display:flex;flex-wrap:wrap;align-items:baseline;
  justify-content:space-between;gap:14px 26px;
  padding-bottom:16px;
}
.site-name{font-size:17px;letter-spacing:.24em;color:var(--ink);text-decoration:none}
.site-name span{color:var(--gold)}
.site-header nav ul{
  display:flex;flex-wrap:wrap;gap:10px 22px;
  list-style:none;margin:0;padding:0;
}
.site-header nav a{
  font-size:12px;letter-spacing:.14em;color:var(--ink);
  text-decoration:none;border-bottom:1px solid var(--line);padding-bottom:2px;
}
.site-header nav a:hover,
.site-header nav a[aria-current="page"]{border-bottom-color:var(--indigo);color:var(--indigo)}

/* ---------- hero ---------- */

.hero{padding:56px 0 var(--gap)}
.hero-title{
  border-top:2px solid var(--indigo);
  border-bottom:1px solid var(--gold);
  padding:34px 0 30px;
}
.hero-title h1{max-width:75%}
.hero-kicker{
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--gold);margin:0 0 16px;
}
.hero-grid{margin-top:34px}
.hero-grid .pause{background:
  repeating-linear-gradient(135deg,transparent 0 9px,rgba(168,128,44,.18) 9px 10px)}

.topics{list-style:none;margin:0;padding:0;font-size:15.5px;line-height:1.65}
.topics li{padding-left:20px;position:relative;margin-bottom:9px}
.topics li:last-child{margin-bottom:0}
.topics li::before{
  content:"";position:absolute;left:0;top:.62em;
  width:7px;height:7px;background:var(--indigo);
}

/* ---------- imagens ---------- */

figure{margin:0}
.fig img{display:block;width:100%;height:auto}
.fig-cap{font-size:14px;line-height:1.6;color:var(--ink-2);align-self:end}
.fig-cap .label{margin-bottom:8px}

.detail-grid{margin-top:8px}
.detail-fig{grid-column:1/span 5}
.detail-text{grid-column:7/span 6}
.detail-fig img{display:block;width:100%;height:auto}
.detail-fig figcaption{font-size:13.5px;line-height:1.6;color:var(--ink-2);padding:14px 0 0}

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

.checks{
  display:grid;grid-template-columns:1fr 1fr;
  border-top:1px solid var(--line);border-left:1px solid var(--line);
  list-style:none;margin:22px 0 0;padding:0;
}
.checks li{
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:16px 18px 16px 38px;position:relative;
  font-size:15.5px;line-height:1.6;
}
.checks li::before{
  content:"";position:absolute;left:18px;top:1.5em;
  width:8px;height:8px;background:var(--gold);
}

.plain{padding-left:20px;margin:0 0 18px}
.plain li{margin-bottom:8px}
.plain li::marker{color:var(--indigo)}

/* ---------- páginas de texto ---------- */

.page-head{padding:48px 0 34px;border-bottom:2px solid var(--indigo)}
.page-head .rule{margin-bottom:22px}
.page-head p{max-width:62ch;color:var(--ink-2)}

.about-grid{
  display:grid;grid-template-columns:3fr 9fr;
  margin-top:var(--gap);
}
.about-side{
  border-right:1px solid var(--line);
  padding-right:24px;
}
.about-side ul{list-style:none;margin:0;padding:0}
.about-side li{
  position:relative;padding-left:18px;margin-bottom:14px;
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;line-height:1.6;color:var(--ink-2);
}
.about-side li::before{
  content:"";position:absolute;left:0;top:.5em;
  width:7px;height:7px;background:var(--gold);
}
.about-body{padding-left:34px;max-width:70ch}
.about-body section + section{margin-top:44px}

.doc{max-width:72ch;padding-top:var(--gap)}
.doc section + section{margin-top:44px}

.contact-box{
  border-top:2px solid var(--indigo);
  border-bottom:1px solid var(--gold);
  padding:22px 0;margin-top:34px;
}
.contact-box p{margin-bottom:8px}

/* ---------- rodapé ---------- */

.site-footer{
  background:var(--bg-alt);
  border-top:2px solid var(--indigo);
  margin-top:var(--gap);
  padding:0 0 46px;
}
.site-footer .wrap{padding-top:44px}
.foot-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);border-left:1px solid var(--line);
}
.foot-grid > div{
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:22px 20px;font-size:14.5px;line-height:1.7;min-width:0;
}
.foot-grid ul{list-style:none;margin:0;padding:0}
.foot-grid li{margin-bottom:6px}
.foot-grid a{word-break:break-word}
.foot-name{
  font-family:var(--mono);text-transform:uppercase;
  letter-spacing:.22em;font-size:15px;
}

/* ---------- adaptação ---------- */

@media (max-width:900px){
  .c3,.c4,.c5,.c6,.c7,.c8,.c9{grid-column:span 6}
  .hero-title h1{max-width:100%}
  .detail-fig{grid-column:1/span 12}
  .detail-text{grid-column:1/span 12}
  .about-grid{grid-template-columns:1fr}
  .about-side{border-right:0;border-bottom:1px solid var(--line);padding:0 0 22px}
  .about-side ul{display:flex;flex-wrap:wrap;gap:0 26px}
  .about-body{padding-left:0;margin-top:30px}
  .foot-grid{grid-template-columns:1fr 1fr}
}

@media (max-width:620px){
  :root{--gap:44px}
  body{font-size:16.5px}
  .c3,.c4,.c5,.c6,.c7,.c8,.c9,.c12{grid-column:span 12}
  .hero{padding:34px 0 var(--gap)}
  .hero-grid .pause{display:none}
  .weave > *{padding:20px 18px}
  .checks{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .lead{font-size:17.5px}
}

.stack--mt{margin-top:34px}