.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 100;
    display: flex;
    align-items: stretch;

    background: color-mix(in srgb, var(--color-surface) 78%, transparent);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border-bottom: 1px solid color-mix(in srgb, var(--color-border) 70%, transparent);
}

@supports not (backdrop-filter: blur(1px)) {
    .site-nav {
        background: var(--color-surface);
        border-bottom-color: var(--color-border);
    }
}

.site-nav__inner {
    max-width: var(--w-page);
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
}

.site-nav__logo {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-size: var(--fs-300);
    font-weight: var(--fw-bold);
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.03em;
    transition: color 0.15s;
}

.site-nav__logo:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.site-nav__logo img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--color-border-strong);
}

.site-nav__links {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--sp-6);
    list-style: none;
}

.site-nav__links a {
    position: relative;
    display: block;
    padding: 4px 0;
    font-size: var(--fs-200);
    font-weight: var(--fw-medium);
    color: var(--color-muted);
    text-decoration: none;
    transition: color 0.15s;
}

.site-nav__links a:hover {
    color: var(--color-text);
    text-decoration: none;
}

.site-nav__links a[aria-current="page"] {
    color: var(--color-text);
}

.site-nav__links a[aria-current="page"]::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    background: var(--color-accent);
}

.site-footer {
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
    padding: 28px 20px;
    text-align: center;
    font-size: var(--fs-200);
    color: var(--color-muted);
}

.site-footer__links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--sp-4) var(--sp-6);
    margin-bottom: var(--sp-5);
}

.site-footer__links a {
    color: var(--color-text);
    font-weight: var(--fw-medium);
    text-decoration: underline;
    text-decoration-color: color-mix(in srgb, var(--color-text) 20%, transparent);
    text-underline-offset: 3px;
    transition: text-decoration-color 0.18s, color 0.18s;
}

.site-footer__links a:hover {
    color: var(--color-accent);
    text-decoration-color: var(--color-accent);
}

.site-footer__legal {
    display: block;
    font-size: var(--fs-100);
}

.site-footer a {
    color: var(--color-muted);
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

@media (max-width: 640px) {
    .site-nav__inner {
        padding: 0 14px;
    }

    .site-nav__links {
        gap: var(--sp-5);
    }

    .site-nav__links a {
        font-size: var(--fs-100);
    }
}

@media (max-width: 360px) {
    .site-nav__inner {
        padding: 0 10px;
    }

    .site-nav__links {
        gap: var(--sp-3);
    }
}