.site-container {
    width: min(var(--container-width), calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(226, 232, 240, 0.85);
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(18px);
}

.site-navigation {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.site-brand-mark {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 13px;
    color: var(--color-sidebar);
    background: var(--color-primary);
    font-size: 21px;
    font-weight: 800;
}

.site-brand-name {
    color: var(--color-sidebar);
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 0.13em;
}

.site-menu,
.site-navigation-actions {
    display: flex;
    align-items: center;
    gap: 26px;
}

.site-menu {
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 600;
}

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

.site-footer {
    padding: 55px 0;
    color: var(--color-sidebar-text);
    background: var(--color-sidebar);
}

.site-footer-inner {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 30px;
}

.site-footer strong {
    color: var(--color-text-inverse);
    letter-spacing: 0.12em;
}

.site-footer p {
    margin: 10px 0 0;
    font-size: 14px;
    line-height: 1.7;
}

@media (max-width: 760px) {
    .site-menu {
        display: none;
    }

    .site-navigation-actions .btn-secondary {
        display: none;
    }

    .site-footer-inner {
        align-items: flex-start;
        flex-direction: column;
    }
}

.mobile-menu-toggle {
    width: 44px;
    height: 44px;
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 20px;
    height: 2px;
    border-radius: 999px;
    background: var(--color-text);
    transition:
        transform var(--transition),
        opacity var(--transition);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.mobile-menu[hidden] {
    display: none;
}

.mobile-menu-inner {
    display: grid;
    gap: 4px;
    padding-top: 16px;
    padding-bottom: 20px;
}

.mobile-menu-inner > a:not(.btn) {
    display: block;
    padding: 14px 4px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 15px;
    font-weight: 700;
}

.mobile-menu-inner .btn {
    width: 100%;
    margin-top: 12px;
}

@media (max-width: 760px) {
    .site-menu,
    .site-navigation-actions {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }
}

.mobile-menu-toggle {
    width: 44px;
    height: 44px;
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 20px;
    height: 2px;
    border-radius: 999px;
    background: var(--color-text);
    transition:
        transform var(--transition),
        opacity var(--transition);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.mobile-menu[hidden] {
    display: none;
}

.mobile-menu-inner {
    display: grid;
    gap: 4px;
    padding-top: 16px;
    padding-bottom: 20px;
}

.mobile-menu-inner > a:not(.btn) {
    display: block;
    padding: 14px 4px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 15px;
    font-weight: 700;
}

.mobile-menu-inner .btn {
    width: 100%;
    margin-top: 12px;
}

@media (max-width: 760px) {
    .site-menu,
    .site-navigation-actions {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }
}