.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 950;
    background: transparent;
    border-bottom: 0;
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 84px;
}

.site-header__brand {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    opacity: 1;
    transition: opacity 0.28s ease;
}

.site-header__brand.is-faded {
    opacity: 0;
    pointer-events: none;
}

.site-header__logo {
    display: block;
    width: auto;
    max-width: min(240px, 58vw);
    height: 86px;
    object-fit: contain;
}

.site-header__menu {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.45rem;
}

.site-header__menu-btn {
    min-width: 148px;
    height: 54px;
    border: 0;
    border-radius: 0;
    background: var(--color-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0 1.15rem;
    z-index: 2;
    transition: background-color 0.25s ease, color 0.25s ease;
}

.site-header__menu-label {
    display: inline-block;
    color: #ffffff;
    font-size: 1.15rem;
    line-height: 1;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    transition: color 0.25s ease;
    will-change: transform, opacity;
    backface-visibility: hidden;
}

.site-header__menu.is-open .site-header__menu-btn {
    background: #ffffff;
}

.site-header__menu.is-open .site-header__menu-label {
    color: var(--color-secondary);
}

.site-header__menu-panel {
    position: absolute;
    top: 0;
    right: 0;
    width: 148px;
    max-height: 54px;
    border: 0;
    border-radius: 0;
    background: var(--color-secondary);
    overflow: hidden;
    padding: 0;
    transition: width 0.35s ease, max-height 0.35s ease, border-radius 0.35s ease, padding 0.35s ease, box-shadow 0.35s ease;
}

.site-header__menu-nav {
    opacity: 0;
    transition: opacity 0.18s ease;
}

.site-header__menu.is-open .site-header__menu-panel {
    width: 500px;
    max-height: 620px;
    padding: 1.05rem 1.1rem 1.2rem;
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
}

.site-header__menu.is-open .site-header__menu-nav {
    opacity: 1;
}

.site-header__menu-nav {
    margin-top: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.95rem;
}

.site-header__menu-link {
    color: #ffffff;
    text-decoration: none;
    line-height: 1;
}

.site-header__menu-link:hover,
.site-header__menu-link:focus-visible {
    color: #dceefe;
}

.site-header__menu-btn:hover,
.site-header__menu-btn:focus-visible {
    background: var(--color-primary-hover);
}

.site-header__menu.is-open .site-header__menu-btn:hover,
.site-header__menu.is-open .site-header__menu-btn:focus-visible {
    background: #f1f4f7;
}

@media (max-width: 768px) {
    .site-header__inner {
        min-height: 74px;
    }

    .site-header__logo {
        height: 86px;
    }

    .site-header__menu-btn {
        min-width: 120px;
        height: 46px;
    }

    .site-header__menu-panel {
        width: 120px;
        max-height: 46px;
    }

    .site-header__menu.is-open .site-header__menu-panel {
        width: 320px;
        max-height: 580px;
        padding: 0.85rem;
    }

    .site-header__menu-link {
        font-size: clamp(1.7rem, 7vw, 2.4rem);
    }
}