:root {
  color-scheme: dark;
  --background: #080f1b;
  --surface: #101c2c;
  --text: #eef4fa;
  --muted: #b5c3d3;
  --accent: #5ce1cf;
  --border: #304257;
}
* { box-sizing: border-box; }
html { font-size: 100%; }
body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
  overflow-wrap: anywhere;
}
a { color: var(--accent); text-underline-offset: .22em; }
a:hover { text-decoration-thickness: .14em; }
a:focus-visible, [tabindex="-1"]:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
  border-radius: 4px;
}
.shell { width: min(100% - 2.5rem, 840px); margin-inline: auto; }
.site-header {
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--border);
}
.brand { font-size: 1.4rem; font-weight: 750; letter-spacing: -.04em; text-decoration: none; color: var(--text); }
.brand::after { content: "."; color: var(--accent); }
.site-header .shell { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.site-label, .updated, .site-footer { color: var(--muted); }
main { padding-block: 2.5rem 4rem; }
h1, h2 { line-height: 1.25; letter-spacing: -.025em; }
h1 { font-size: clamp(2rem, 6vw, 3rem); margin: 1rem 0; }
h2 { font-size: 1.25rem; margin: 0 0 .85rem; }
p { margin: .85rem 0; }
ul { padding-inline-start: 1.4rem; }
li + li { margin-top: .45rem; }
.eyebrow { color: var(--accent); font-size: .8rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.intro { color: var(--muted); max-width: 42rem; }
.cards { display: grid; gap: 1rem; margin-top: 2rem; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 1.5rem; }
.card h2 a { display: block; padding-block: .35rem; }
.card > a { display: inline-flex; align-items: center; min-height: 44px; }
.language-nav { display: flex; gap: .5rem; margin-bottom: 1.5rem; }
.language-nav a {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 52px; min-height: 44px; padding: .35rem .85rem;
  border: 1px solid var(--border); border-radius: 8px;
}
.language-nav a[aria-current="true"] { color: var(--background); background: var(--accent); border-color: var(--accent); font-weight: 700; text-decoration: none; }
/* English comes first in the HTML so :target can hide its Portuguese sibling.
   No hash (or #pt) = Portuguese; #en = English. No scripts or stored preference. */
.language-panel--en { display: none; }
.language-panel--en:target { display: block; }
.language-panel--en:target ~ .language-panel--pt { display: none; }
.language-panel { scroll-margin-top: 1.25rem; }
.document-header { padding-bottom: 1.5rem; border-bottom: 1px solid var(--border); }
.document-section { margin-top: 2rem; }
.notice { padding: 1rem 1.25rem; border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 8px 8px 0; }
.contact-link { font-weight: 700; color: var(--accent); }
.document-footer { margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.document-footer nav { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; }
.document-footer a { display: inline-flex; align-items: center; min-height: 44px; }
.site-footer { padding-block: 1.5rem; border-top: 1px solid var(--border); font-size: .875rem; }
.skip-link { position: absolute; top: .5rem; left: 1rem; transform: translateY(-200%); background: var(--surface); padding: .5rem 1rem; z-index: 1; }
.skip-link:focus { transform: translateY(0); }
@media (min-width: 640px) {
  main { padding-top: 3.5rem; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media print {
  :root { color-scheme: light; }
  body { background: white; color: black; font-size: 11pt; }
  .shell { width: 100%; max-width: none; }
  .language-panel--en, .language-panel--en:target ~ .language-panel--pt { display: block; }
  .language-panel--pt { break-before: page; }
  .language-nav, .skip-link, .document-footer { display: none; }
  .site-label, .updated, .site-footer, .eyebrow, a, .contact-link { color: black; }
  .notice, .card { background: white; border-color: #666; }
  h2 { break-after: avoid; }
}