/* Cabeçalho/menu canônico da SigningLab — fonte única, idêntico ao index.
   Regras escopadas em `header.site ...` para vencer o CSS local de cada página. */
header.site { position: sticky; top: 0; z-index: 50; background: rgba(245,243,238,0.92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
header.site .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
header.site .nav { display: flex; align-items: center; justify-content: space-between; height: 120px; gap: 16px; }
header.site .brand { font-family: var(--serif); font-weight: 600; font-size: 22px; letter-spacing: -0.01em; display: flex; align-items: center; gap: 12px; }
header.site .brand-logo { height: 112px; width: auto; display: block; }
header.site .nav-links { display: flex; gap: 28px; font-size: 14px; font-weight: 500; color: var(--ink-soft); }
header.site .nav-links a { color: var(--ink-soft); }
header.site .nav-links a:hover { color: var(--accent); }
header.site .nav-right { display: flex; align-items: center; gap: 16px; }
header.site .lang-picker { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-soft); transition: color 0.15s; }
header.site .lang-picker:hover { color: var(--ink); }
header.site .lang-globe { width: 16px; height: 16px; flex: none; display: block; }
header.site .lang-select {
  width: 58px; box-sizing: border-box;
  font-family: var(--mono); font-size: 12px; font-weight: 600; letter-spacing: 0.04em;
  color: inherit; background-color: transparent; cursor: pointer;
  border: 1px solid var(--line); border-radius: 5px;
  padding: 7px 24px 7px 9px; transition: border-color 0.15s;
  appearance: none; -webkit-appearance: none; -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%236b6b6b' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 8px center; background-size: 10px;
}
header.site .lang-picker:hover .lang-select { border-color: var(--ink-soft); }
header.site .lang-select:focus { outline: none; border-color: var(--accent); }
@media (max-width: 860px) { header.site .nav-links { display: none; } }