.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(18px) saturate(1.4);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    background: var(--color-nav-bg);
    border-bottom: 1px solid var(--color-line);
}

.nav-in {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: var(--text-19-px);
    letter-spacing: -0.01em;
}

.brand img {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    transition: transform 0.6s cubic-bezier(.2, .9, .3, 1.4);
}

.brand:hover img {
    transform: rotate(360deg) scale(1.1);
}

.brand small {
    display: block;
    font-weight: 500;
    font-size: var(--text-12-px);
    color: var(--color-overlay);
    letter-spacing: 0.02em;
    margin-top: -3px;
}

.links {
    display: flex;
    align-items: center;
    gap: 6px;
}

.links a {
    padding: 8px 14px;
    border-radius: 12px;
    font-size: var(--text-15-px);
    font-weight: 500;
    color: var(--color-subtext);
    transition: color 0.2s, background 0.2s;
}

.links a:hover {
    color: var(--color-text);
    background: var(--color-hover);
}

.links a.active {
    color: var(--color-text);
    background: var(--color-active);
}

.links a.gh {
    margin-left: 8px;
    border: 1px solid var(--color-surface1);
    color: var(--color-text);
}

.burger {
    display: none;
    background: none;
    border: 1px solid var(--color-surface1);
    color: var(--color-text);
    width: 42px;
    height: 42px;
    border-radius: 12px;
    font-size: var(--text-20-px);
    cursor: pointer;
}

@media (max-width: 960px) {
    .burger {
        display: block;
    }

    .links {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        padding: 14px 24px 22px;
        background: var(--color-mantle);
        border-bottom: 1px solid var(--color-surface0);
        display: none;
    }

    .links.open {
        display: flex;
    }

    .links a.gh {
        margin: 6px 0 0;
        text-align: center;
    }
}