:root {
  --azul: #0b4f6c;
  --azul-escuro: #0b3b55;
  --laranja: #f59a4a;
  --fundo: #f4f3fb;
  --cartao: #ffffff;
  --texto: #1b2430;
  --suave: #5b6573;
  --linha: #dcdfe8;
  --destaque: #fff3bf;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fundo: #0f1720;
    --cartao: #17212c;
    --texto: #e8edf3;
    --suave: #9aa7b6;
    --linha: #2a3644;
    --destaque: #5c4b00;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--fundo);
  color: var(--texto);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

header.topo {
  background: var(--azul-escuro);
  color: #fff;
  padding: 14px 16px;
}
header.topo .interior {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
header.topo img { width: 40px; height: 40px; border-radius: 10px; }
header.topo a.marca { color: #fff; font-weight: 700; font-size: 1.15rem; text-decoration: none; }
header.topo nav { margin-left: auto; display: flex; gap: 14px; flex-wrap: wrap; font-size: 0.95rem; }
header.topo nav a { color: #cfe3ee; text-decoration: none; }
header.topo nav a:hover, header.topo nav a[aria-current="page"] { color: #fff; text-decoration: underline; }

main {
  max-width: 820px;
  margin: 24px auto;
  padding: 24px 20px 32px;
  background: var(--cartao);
  border-radius: 16px;
}
@media (max-width: 860px) { main { margin: 0; border-radius: 0; } }

h1 { font-size: 1.8rem; line-height: 1.25; margin: 0 0 6px; }
h2 { font-size: 1.25rem; margin: 34px 0 8px; color: var(--azul); }
@media (prefers-color-scheme: dark) { h2 { color: #7fc4e6; } }
h3 { font-size: 1.05rem; margin: 22px 0 6px; }
p, li { margin: 8px 0; }
ul, ol { padding-left: 22px; }
a { color: var(--azul); }
@media (prefers-color-scheme: dark) { a { color: #7fc4e6; } }
.meta { color: var(--suave); font-size: 0.92rem; margin-bottom: 18px; }
.idioma { float: right; font-size: 0.9rem; }

.aviso {
  border-left: 4px solid var(--laranja);
  background: color-mix(in srgb, var(--laranja) 12%, var(--cartao));
  padding: 10px 14px;
  border-radius: 8px;
  margin: 16px 0;
}

table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 0.93rem; }
th, td { border: 1px solid var(--linha); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: color-mix(in srgb, var(--azul) 12%, var(--cartao)); }
.tabela { overflow-x: auto; }

mark.preencher { background: var(--destaque); color: inherit; padding: 1px 4px; border-radius: 4px; }

footer.rodape {
  max-width: 820px;
  margin: 0 auto 32px;
  padding: 0 20px;
  color: var(--suave);
  font-size: 0.88rem;
}
footer.rodape a { color: inherit; }

.cartoes { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin: 18px 0; }
.cartoes a {
  display: block;
  padding: 16px;
  border: 1px solid var(--linha);
  border-radius: 12px;
  text-decoration: none;
  color: var(--texto);
}
.cartoes a strong { display: block; color: var(--azul); margin-bottom: 4px; }
@media (prefers-color-scheme: dark) { .cartoes a strong { color: #7fc4e6; } }

/* Tabelas largas deslizam para o lado no telemóvel em vez de se espremerem. */
.tabela table { min-width: 560px; }