.site-header {
	position: sticky;
	top: 0;
	z-index: 70;
	background: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	min-height: 72px;
	gap: 1rem;
}

.site-header__logo-link {
	display: inline-flex;
	align-items: center;
	line-height: 0;
}

.site-header__logo-image {
	display: block;
	width: auto;
	height: clamp(30px, 4.2vw, 40px);
}

.site-header__menu-toggle {
	display: inline-flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	gap: 5px;
	width: 46px;
	height: 46px;
	border: 1px solid var(--color-border);
	border-radius: 10px;
	background: var(--color-surface);
	cursor: pointer;
}

.site-header__menu-toggle-line {
	display: block;
	width: 22px;
	height: 2px;
	background: var(--color-primary);
	border-radius: 999px;
	transform-origin: center;
	transition:
		transform 0.25s ease,
		opacity 0.2s ease;
}

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

.site-header__menu-toggle[aria-expanded="true"] .site-header__menu-toggle-line:nth-child(2) {
	opacity: 0;
	transform: scaleX(0);
}

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

.global-nav {
	position: absolute;
	top: 100%;
	left: 0;
	right: 0;
	background: var(--color-surface);
	border-bottom: 1px solid var(--color-border);
	box-shadow: var(--shadow-soft);
	padding: 0.75rem 1rem 1.25rem;
	/* Sticky header 配下では画面外のメニューをページスクロールで追えないため、パネル内スクロールにする */
	/* メニューは sticky より前面（header z-index）なので、高さはヘッダー分だけ差し引く */
	max-height: calc(100vh - var(--header-height, 89px));
	max-height: calc(100dvh - var(--header-height, 89px));
	overflow-x: hidden;
	overflow-y: auto;
	-webkit-overflow-scrolling: touch;
	overscroll-behavior: contain;
	visibility: hidden;
	pointer-events: none;
	transform: translate3d(100%, 0, 0);
	transition:
		transform 0.32s cubic-bezier(0.22, 1, 0.36, 1),
		visibility 0.32s;
}

.global-nav.is-open {
	visibility: visible;
	pointer-events: auto;
	transform: translate3d(0, 0, 0);
}

@media (prefers-reduced-motion: reduce) {
	.global-nav {
		transition: none;
	}
}

.global-nav__list {
	display: grid;
	gap: 0.5rem;
}

.global-nav__link,
.global-nav__sub-link {
	display: block;
	padding: 0.7rem 0.9rem;
	border-radius: 10px;
	font-weight: 500;
}

.global-nav__link:hover,
.global-nav__sub-link:hover {
	background: #e6f7f7;
	color: var(--color-primary);
}

.global-nav__item--cta {
	order: -1;
	margin-bottom: 0.35rem;
}

.global-nav__link--cta {
	background: var(--color-accent);
	color: #ffffff;
	border-radius: var(--radius-button);
	font-weight: 700;
	text-align: center;
	transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.global-nav__link--cta:hover {
	background: var(--color-accent-dark);
	color: #ffffff;
	transform: translateY(-1px);
}

.global-nav__link--cta.global-nav__link--cta-outline {
	border: 1px solid var(--color-accent);
	background: #fff;
	color: var(--color-accent);
}

.global-nav__link--cta.global-nav__link--cta-outline:hover,
.global-nav__link--cta.global-nav__link--cta-outline:focus-visible {
	border-color: var(--color-accent-dark);
	background: var(--color-accent-dark);
	color: #fff;
	transform: translateY(-1px);
}

.global-nav__sub-list {
	padding-left: 0.8rem;
	margin-top: 0.35rem;
	border-left: 2px solid #b3e6e6;
}