/* Faixa superior: ícones livres e logotipo no centro geométrico. */
header .header-inner{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;gap:8px 16px;max-width:1440px;padding:8px 24px;flex-wrap:initial}
header .header-left{grid-column:1;grid-row:1;display:flex;align-items:center;gap:8px}
header .brand{grid-column:2;grid-row:1;justify-self:center;display:flex;align-items:center}
header .brand img{width:64px;height:64px}
header .access{grid-column:3;grid-row:1;margin:0;justify-self:end;display:flex;gap:8px}
header button{background:transparent;border:0;border-radius:0;box-shadow:none;padding:0;min-width:44px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;font-size:18px;line-height:1}
header button:hover{outline:0;opacity:.7}
header button:focus-visible{outline:2px solid var(--fg);outline-offset:2px}
header #menu{display:inline-flex;padding:0;font-size:18px}
header svg{flex-shrink:0}
header .theme-moon{display:none}
body.light header .theme-sun{display:none}
body.light header .theme-moon{display:block}
header #nav{display:none;grid-column:1/-1;grid-row:2;width:100%;flex-direction:column;align-items:stretch;gap:4px;font-size:1rem;padding:12px 0}
header #nav.open{display:flex}
header #nav>a,header #nav summary{padding:8px 0;border:0;background:transparent;border-radius:0;min-height:44px}
header #nav .submenu{position:static;min-width:0;border:0;padding:4px 0 12px 20px;background:transparent;gap:8px}
header #nav .submenu a{display:flex;align-items:center;min-height:44px;overflow-wrap:anywhere}
header #search{grid-column:1/-1;grid-row:3;display:flex;width:100%;gap:8px;margin:4px 0 8px}
header #search input{flex:1;width:100%;border:0;border-bottom:1px solid var(--fg);border-radius:0;background:transparent;font-size:1rem}
header #search button{border:0;border-radius:0}
html{scroll-padding-top:100px}
@media(max-width:430px){header .header-inner{padding:8px;gap:6px}header .header-left,header .access{gap:0}header button{min-width:36px;min-height:44px;font-size:17px}header .brand img{width:56px;height:56px}header #menu{font-size:17px}}

@media(max-width:360px){header .header-inner{gap:4px}header .access button{min-width:32px;width:32px}header .brand img{width:40px;height:40px}header svg{width:22px;height:22px}}

/* Menu compacto ancorado à faixa superior, com rolagem própria. */
header .header-inner{position:relative}
header #nav{position:absolute;top:calc(100% + 8px);left:16px;grid-column:auto;grid-row:auto;width:min(320px,calc(100% - 32px));max-height:min(480px,65vh);max-height:min(480px,65dvh);overflow-y:auto;overscroll-behavior:contain;padding:12px 18px;background:var(--bg);color:var(--fg);border:0;border-radius:12px;box-shadow:0 8px 28px rgba(0,0,0,.4);z-index:30;align-items:stretch;gap:0;font-size:.9rem}
header #nav>a,header #nav summary{padding:8px 0;min-height:44px}
header #nav summary{justify-content:space-between;list-style:none}
header #nav summary::-webkit-details-marker{display:none}
header #nav details[open]>summary:after{content:'⌃'}
header #nav .submenu{padding:0 0 8px 14px;font-size:.86rem;gap:2px}
header #nav a:hover,header #nav summary:hover{text-decoration:underline}
header #nav a:focus-visible,header #nav summary:focus-visible{outline-offset:0}
body.light header #nav{box-shadow:0 8px 28px rgba(0,0,0,.18)}
@media(max-width:430px){header #nav{left:8px;width:min(300px,calc(100% - 16px));padding:10px 16px}}