.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: rgba(7, 7, 11, 0.72);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

body { padding-top: var(--header-h, 72px); }

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
}

.logo {
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-0);
    letter-spacing: -0.01em;
}

.site-nav {
    display: flex;
    gap: var(--space-6);
}

.site-nav a {
    font-size: 0.95rem;
    color: var(--text-1);
    font-weight: 500;
    transition: color 0.2s var(--ease);
    position: relative;
}
.site-nav a:hover { color: var(--accent); }

@media (max-width: 540px) {
    .site-nav { gap: var(--space-4); }
    .site-nav a { font-size: 0.85rem; }
}