.site-header {
    width: 100%;
    background: #fff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header-inner {
    width: 100%;
    max-width: calc(var(--site-width) + (var(--site-padding) * 2));
    margin: 0 auto;
    padding: 0 var(--site-padding);
    min-height: 86px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.site-logo {
    flex: 0 0 auto;
    color: var(--text);
    font-family: var(--serif);
    font-size: 42px;
    font-weight: 700;
    letter-spacing: -.03em;
    line-height: 1;
}

.site-logo:hover {
    color: var(--text);
}

.site-menu {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 22px 28px;
}

.site-menu a {
    color: var(--text);
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    white-space: nowrap;
}

.site-menu a:hover {
    color: var(--accent);
}

.menu-button {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    background: #fff;
    cursor: pointer;
    padding: 10px;
}

.menu-button span {
    display: block;
    width: 100%;
    height: 2px;
    margin: 5px 0;
    background: var(--text);
}

@media (max-width: 980px) {
    .site-header-inner {
        min-height: 72px;
    }

    .site-logo {
        font-size: 34px;
    }

    .menu-button {
        display: block;
        flex: 0 0 auto;
    }

    .site-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 10px;
        right: 10px;
        background: #fff;
        border: 1px solid var(--border);
        padding: 18px;
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
        box-shadow: 0 12px 28px rgba(0,0,0,.08);
    }

    .site-menu.is-open {
        display: flex;
    }
}