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

:root{
  --paper:#f1f2f0;
  --paper-alt:#e3e5e2;
  --ink-bg:#141614;
  --text:#171917;
  --text-soft:#6a6e6a;
  --text-invert:#f1f2f0;
  --accent:#2a6b3c;
  --accent-2:#8a6a20;
  --rule:#c9ccc8;
  --maxw:1140px;
  --gap:24px;
}

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

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

body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:18px;
  line-height:1.9;
  overflow-x:hidden;
}

h1,h2,h3{
  font-family:Georgia,"Times New Roman",serif;
  font-weight:400;
  line-height:1.3;
  margin:0 0 20px;
  letter-spacing:0.002em;
}

h1{font-size:clamp(1.9rem,1.3rem + 2vw,3rem);}
h2{font-size:clamp(1.45rem,1.15rem + 1.1vw,2.05rem);}
h3{font-size:clamp(1.15rem,1.05rem + 0.4vw,1.35rem);}

p{margin:0 0 26px;max-width:68ch;}

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;}

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

.skip{
  position:absolute;left:-9999px;top:0;background:var(--paper);
  color:var(--text);padding:10px 16px;z-index:10;
}
.skip:focus{left:12px;top:12px;}

/* ---------- estrutura ---------- */

.wrap{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 24px;
}

.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  column-gap:var(--gap);
  row-gap:8px;
}

.c-center6{grid-column:4 / 10;}
.c-center8{grid-column:3 / 11;}
.c-left7{grid-column:1 / 8;}
.c-left3{grid-column:2 / 5;}
.c-right3{grid-column:9 / 12;}
.c-left4{grid-column:2 / 6;}
.c-right4{grid-column:8 / 12;}
.c-dark-img{grid-column:1 / 6;}
.c-dark-text{grid-column:7 / 13;}

/* ritmo de secções: 64 / 80 / 96 / 64 */
.r64{padding-top:64px;padding-bottom:64px;}
.r80{padding-top:80px;padding-bottom:80px;}
.r96{padding-top:96px;padding-bottom:96px;}

.band-alt{background:var(--paper-alt);}

.band-ink{
  background:var(--ink-bg);
  color:var(--text-invert);
}
.band-ink h2,.band-ink h3{color:var(--text-invert);}
.band-ink .caption,.band-ink .sec-num{color:#b6bab5;}
.band-ink a{color:#9ec9a8;}
.band-ink li::before{background:#9ec9a8;}
.band-ink .rule-soft{background:#3a3e3a;}

/* eixo vertical central */
.axis{position:relative;}
.axis::before{
  content:"";
  position:absolute;
  top:0;bottom:0;left:50%;
  width:1px;
  background:linear-gradient(to bottom,rgba(42,107,60,0) 0%,rgba(42,107,60,.45) 12%,rgba(42,107,60,.45) 88%,rgba(42,107,60,0) 100%);
  pointer-events:none;
}

/* arco separador */
.arc{
  width:min(33.33%,300px);
  height:44px;
  margin:0 auto;
  border-top:1px solid var(--accent-2);
  border-left:1px solid transparent;
  border-right:1px solid transparent;
  border-radius:220px 220px 0 0;
}

.rule-soft{height:1px;background:var(--rule);border:0;margin:0;}

/* ---------- cabeçalho ---------- */

.site-head{
  padding:26px 0 18px;
  border-bottom:1px solid var(--rule);
  text-align:center;
}

.brand{
  font-family:Georgia,"Times New Roman",serif;
  font-size:1.5rem;
  line-height:1.2;
  letter-spacing:0.06em;
  color:var(--text);
  text-decoration:none;
  display:inline-block;
}
.brand:hover{text-decoration:none;}

.brand-line{
  display:block;
  font-family:system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:14px;
  line-height:1.6;
  letter-spacing:0;
  color:var(--text-soft);
  margin-top:6px;
}

.nav ul{
  list-style:none;
  margin:14px 0 0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:center;
  gap:10px 16px;
  font-size:16px;
  line-height:1.6;
}
.nav li{display:flex;align-items:center;gap:16px;}
.nav li + li::before{
  content:"";
  width:1px;height:13px;background:var(--rule);display:block;
}
.nav a{color:var(--text);text-decoration:none;padding-bottom:2px;border-bottom:1px solid transparent;}
.nav a:hover{border-bottom-color:var(--accent);}
.nav a[aria-current="page"]{border-bottom-color:var(--accent);color:var(--accent);}

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

.hero{padding:72px 0 8px;}
.hero h1{text-align:center;}
.hero h1 .line{display:block;}
.hero .lede{
  grid-column:4 / 10;
  text-align:center;
  margin-inline:auto;
  font-size:19px;
}
.hero .side{
  font-size:16px;
  line-height:1.8;
  color:var(--text-soft);
  margin-top:14px;
}
.hero .side p{margin-bottom:0;}
.hero .side h2{
  font-size:15px;
  font-family:system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--accent-2);
  margin-bottom:8px;
  line-height:1.6;
}
.hero .side-left{text-align:right;}
.hero .side-right{text-align:left;}

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

.figure-main{
  margin:44px auto 0;
  max-width:680px;
  text-align:center;
}
.figure-main img{margin:0 auto;}

.caption{
  font-size:14px;
  line-height:1.7;
  color:var(--text-soft);
  margin:12px 0 0;
  max-width:60ch;
}
.figure-main .caption{margin-inline:auto;text-align:center;}

.figure-detail{margin:0;}
.figure-detail .caption{text-align:left;}

/* ---------- secções ---------- */

.sec-num{
  font-size:14px;
  line-height:1.6;
  color:var(--accent-2);
  margin:0 0 10px;
  letter-spacing:0.08em;
}

.sec-center h2,.sec-center .sec-num{text-align:center;}
.sec-center p{margin-inline:auto;}
.sec-center .body{text-align:left;}

.pair h3{margin-bottom:12px;}
.pair p:last-child{margin-bottom:0;}

.note{
  font-size:16px;
  line-height:1.8;
  color:var(--text-soft);
}

/* listas */
ul.check,ol.steps{padding:0;margin:0 0 26px;}
ul.check{list-style:none;}
ul.check li{
  position:relative;
  padding-left:22px;
  margin-bottom:12px;
  max-width:66ch;
}
ul.check li::before{
  content:"";
  position:absolute;
  left:0;top:14px;
  width:8px;height:1px;
  background:var(--accent);
}

ol.steps{list-style:none;counter-reset:step;}
ol.steps li{
  counter-increment:step;
  position:relative;
  padding-left:44px;
  margin-bottom:18px;
  max-width:66ch;
}
ol.steps li::before{
  content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:0;
  font-size:14px;
  color:var(--accent-2);
}
ol.steps strong{font-weight:600;}

.list-title{
  font-size:16px;
  color:var(--text-soft);
  margin:0 0 14px;
}

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

.contact-box{text-align:center;}
.contact-box p{margin-inline:auto;}
.contact-mail{
  font-family:Georgia,"Times New Roman",serif;
  font-size:1.2rem;
}

/* ---------- rodapé ---------- */

.site-foot{
  padding:56px 0 64px;
  text-align:center;
  background:var(--paper);
}
.site-foot .arc{margin-bottom:34px;}
.foot-name{
  font-family:Georgia,"Times New Roman",serif;
  font-size:1.35rem;
  letter-spacing:0.06em;
  margin:0 0 18px;
}
.site-foot .nav ul{margin-top:0;}
.foot-mail{margin:22px 0 0;font-size:16px;}
.foot-note{
  margin:12px auto 0;
  font-size:14px;
  line-height:1.8;
  color:var(--text-soft);
  max-width:56ch;
}

/* ---------- páginas internas ---------- */

.page-head{padding:64px 0 0;text-align:center;}
.page-head h1{margin-bottom:16px;}
.page-head .lede{
  max-width:60ch;
  margin:0 auto;
  color:var(--text-soft);
  font-size:17px;
}

.prose h2{margin-top:44px;}
.prose h2:first-child{margin-top:0;}
.prose h3{margin-top:30px;}

/* ---------- responsivo ---------- */

@media (max-width:900px){
  .grid{column-gap:18px;}
  .c-center6,.c-center8,.c-left7,.c-left3,.c-right3,
  .c-left4,.c-right4,.c-dark-img,.c-dark-text,.hero .lede{grid-column:1 / -1;}
  .hero .side-left,.hero .side-right{text-align:left;}
  .hero .side-left{margin-top:28px;}
  .figure-detail{margin-bottom:28px;max-width:520px;}
  .axis::before{display:none;}
  .r64,.r80,.r96{padding-top:48px;padding-bottom:48px;}
  .hero{padding-top:48px;}
  .sec-center p,.contact-box p{margin-inline:0;}
  .sec-center h2,.sec-center .sec-num,.sec-center,.contact-box,.page-head{text-align:left;}
  .figure-main .caption{text-align:left;}
  .page-head .lede{margin-left:0;}
  .site-foot{text-align:center;}
}

@media (max-width:640px){
  body{font-size:17px;line-height:1.85;}
  .wrap{padding:0 18px;}
  .r64,.r80,.r96{padding-top:40px;padding-bottom:40px;}
  .hero h1 .line{display:inline;}
  .nav ul{gap:8px 12px;font-size:15px;}
  .nav li{gap:12px;}
  .figure-main{margin-top:32px;}
  p{margin-bottom:22px;}
}