.site-header {
    width: 100%;
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(5, 8, 20, 0.9);
    position: sticky;
    top: 0;
    z-index: 50;
}

.site-header-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: baseline;
    gap: 12px;
    flex-wrap: wrap;
}

.site-brand {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
}

.site-tagline {
    margin: 0;
    opacity: 0.8;
    font-size: 0.9rem;
}

.site-footer {
    max-width: 1100px;
    margin: 24px auto 32px;
    padding: 0 18px;
    opacity: 0.8;
    font-size: 0.85rem;
}