/* thue-nhan-tang brand layer (thiet-ke handoff, o-4e664f). Copy verbatim next to index.html. Accent #2563eb = favicon/logo; layout stays on kit tokens.css. */
:root{--brand:#2563eb;--brand-ink:#1d4ed8;--brand-soft:#e8effd}
@media (prefers-color-scheme:dark){:root{--brand:#7aa2f7;--brand-ink:#a9c1fa;--brand-soft:#1b2a4a}}
.topbar{display:flex;align-items:center;padding:8px 16px;max-width:720px;margin:0 auto}
.brand{display:inline-flex;align-items:center;gap:10px;min-height:48px;font-weight:700;font-size:1.125rem;color:var(--brand-ink);text-decoration:none;white-space:nowrap}
.logo{width:28px;height:28px;flex:none}