:root {
  --bg: #ffffff;
  --text: #111111;
  --muted: #666666;
  --link: #0066cc;
  --border: #e5e5e5;
  --max-width: 640px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

[data-lang] {
  display: none;
}
body.lang-en [data-lang="en"] {
  display: revert;
}
body.lang-pt [data-lang="pt"] {
  display: revert;
}

.lang-toggle {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  gap: 6px;
  align-items: center;
}

.lang-btn {
  background: none;
  border: none;
  padding: 4px 6px;
  font: inherit;
  color: var(--muted);
  cursor: pointer;
  letter-spacing: 0.05em;
}
.lang-btn:hover {
  color: var(--text);
}
.lang-btn.active {
  color: var(--text);
  font-weight: 600;
}

.lang-sep {
  color: var(--border);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 96px 32px 64px;
}

header {
  margin-bottom: 64px;
}

h1 {
  font-size: 36px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.subtitle {
  font-size: 17px;
  color: var(--muted);
  margin: 0;
}

section {
  margin-bottom: 48px;
}

h2 {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 0 0 16px;
}

p {
  margin: 0 0 12px;
}

a {
  color: var(--link);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.info {
  margin: 0;
  display: grid;
  grid-template-columns: 180px 1fr;
  row-gap: 10px;
  column-gap: 24px;
}

.info dt {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}

.info dd {
  margin: 0;
  font-size: 15px;
}

footer {
  margin-top: 96px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted);
}

@media (max-width: 520px) {
  main {
    padding: 80px 20px 48px;
  }

  h1 {
    font-size: 28px;
  }

  .info {
    grid-template-columns: 1fr;
    row-gap: 4px;
  }

  .info dd {
    margin-bottom: 8px;
  }

  .lang-toggle {
    top: 16px;
    right: 16px;
  }
}