.site-header { position: sticky; top: 0; z-index: 10; background: rgba(15,23,32,.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.brand { display: inline-block; color: #fff; font-weight: 700; font-size: 1.2rem; padding: 18px 0; }
.site-nav { justify-self: end; }
.nav-list { list-style: none; display: flex; gap: 16px; margin: 0; padding: 0; }
.nav-list a { color: var(--text); }
.site-footer { margin-top: 48px; padding: 48px 0; border-top: 1px solid var(--border); background: rgba(255,255,255,.03); }