:root {
    --site-nav-text: #0f172a;
    --site-nav-muted: #475569;
    --site-nav-border: rgba(15, 23, 42, 0.08);
    --site-nav-glass: rgba(251, 251, 253, 0.8);
    --site-nav-hover: rgba(15, 23, 42, 0.04);
}

.site-nav {
    position: sticky;
    top: 0;
    z-index: 3000;
    padding: 0;
    background: var(--site-nav-glass);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--site-nav-border);
}

.site-nav__shell {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 22px;
}

.site-nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.15rem;
    min-height: 44px;
    padding: 0;
}

.site-nav__brand {
    flex-shrink: 0;
    color: var(--site-nav-text);
    text-decoration: none;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.site-nav__brand-text {
    display: inline-block;
}

.site-nav__links {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-nav__links a,
.site-mobile-nav__links a {
    text-decoration: none;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
    letter-spacing: -0.01em;
    transition: all 0.25s ease;
}

.site-nav__links a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 0.35rem;
    color: var(--site-nav-muted);
    font-size: 0.78rem;
    font-weight: 500;
}

.site-nav__links a:hover,
.site-nav__links a.is-active {
    color: var(--site-nav-text);
    background: transparent;
}

.site-nav__actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.site-nav__toggle {
    display: none;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 999px;
    background: transparent;
    color: var(--site-nav-text);
    cursor: pointer;
}

.site-mobile-nav {
    display: none;
    position: fixed;
    top: 48px;
    left: 24px;
    right: 24px;
    z-index: 2999;
    border: 1px solid var(--site-nav-border);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.14);
    padding: 0.8rem 0;
}

.site-mobile-nav.is-open {
    display: block;
}

.site-mobile-nav__links {
    margin: 0;
    padding: 0 16px;
    list-style: none;
}

.site-mobile-nav__links li {
    padding: 0.2rem 0;
}

.site-mobile-nav__links a {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: 0.85rem 1rem;
    border-radius: 16px;
    color: var(--site-nav-text);
    font-size: 0.98rem;
    font-weight: 500;
}

.site-mobile-nav__links a:hover,
.site-mobile-nav__links a.is-active {
    background: var(--site-nav-hover);
}

body.site-nav-open {
    overflow: hidden;
}

@media (max-width: 900px) {
    .site-nav__links,
    .site-nav__actions {
        display: none;
    }

    .site-nav__toggle {
        display: inline-flex;
    }
}

@media (max-width: 640px) {
    .site-nav__shell {
        padding: 0 16px;
    }

    .site-nav__inner {
        min-height: 44px;
    }

    .site-nav__brand {
        font-size: 0.9rem;
    }

    .site-mobile-nav {
        top: 48px;
        left: 16px;
        right: 16px;
    }
}

@media print {
    .site-nav,
    .site-mobile-nav {
        display: none !important;
    }
}