.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(16px);
    background: rgba(4, 8, 22, 0.72);
    border-bottom: 1px solid var(--border);
}

.nav-shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 76px;
}

.brand-mark {
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #ffffff;
}

.site-nav {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.site-nav a {
    color: var(--text-soft);
    font-weight: 500;
}

.site-nav a:hover {
    color: #ffffff;
}

.site-main {
    min-height: calc(100vh - 160px);
}

.site-footer {
    border-top: 1px solid var(--border);
    background: rgba(4, 8, 22, 0.8);
    margin-top: 4rem;
}

.footer-shell {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    padding: 2rem 0;
    flex-wrap: wrap;
}

.footer-brand {
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.footer-copy {
    color: var(--text-soft);
    max-width: 32rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}