.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #FFFFFFF2;
    box-shadow: 0px 1px 2px 0px #0000000D;
    backdrop-filter: blur(12px);
    transition: box-shadow 0.3s ease;
}

.site-header.is-scrolled {
    box-shadow: 0 4px 20px rgba(11, 20, 36, 0.08);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: 92px;
    transition: height 0.3s ease;
}

.site-header.is-scrolled .site-header__inner {
    height: 80px;
}

.site-header__brand {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.site-header__logo-img {
    height: 72px;
    width: auto;
    object-fit: contain;
}

.site-header__brand-name {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 22px;
}

.site-header__brand-name--primary {
    color: var(--color-primary);
}

.site-header__brand-name--accent {
    color: var(--color-accent);
}

.site-header__divider {
    width: 1px;
    height: 20px;
    background: var(--color-border);
}

.site-header__tagline {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.site-header__nav ul {
    display: flex;
    align-items: center;
    gap: 32px;
}

.site-header__nav a {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text);
    transition: color 0.2s ease;
}

.site-header__nav a:hover {
    color: var(--color-primary);
}

.site-header__actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}

.site-header__cta {
    padding: 12px 24px;
    font-size: 14px;
}

.site-header__toggle {
    display: none;
    background: none;
    border: none;
    padding: 6px;
    color: var(--color-ink);
}

@media (max-width: 900px) {
    .site-header__nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--color-border);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .site-header__nav.is-open {
        max-height: 400px;
    }

    .site-header__nav ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding: 8px 24px 20px;
    }

    .site-header__nav li {
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }

    .site-header__nav a {
        display: block;
        padding: 14px 0;
    }

    .site-header__cta {
        display: none;
    }

    .site-header__toggle {
        display: flex;
    }
}

@media (max-width: 420px) {
    .site-header__divider,
    .site-header__tagline {
        display: none;
    }
}