/* ===== Header ===== */
.site-header {
	position: fixed;
	top: 0; left: 0; right: 0;
	z-index: 100;
	background: rgba(8, 8, 10, 0.7);
	backdrop-filter: blur(10px);
	border-bottom: 1px solid transparent;
	transition: border-color var(--duration-fast) var(--ease-standard), background var(--duration-fast) var(--ease-standard);
}
.site-header.is-scrolled {
	border-bottom-color: var(--color-hairline);
	background: rgba(8, 8, 10, 0.92);
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	padding-block: 14px;
}

.site-logo { flex-shrink: 0; display: flex; align-items: center; font-weight: 900; font-size: 20px; letter-spacing: 0.02em; }
.site-logo a { display: flex; align-items: center; }

/*
 * the_custom_logo() は <a class="custom-logo-link"><img class="custom-logo"></a> を出力する。
 * img は width/height 属性（メディア原寸）を持つため、.site-logo img のような子孫セレクタだけでは
 * 上書きされないことがある。.custom-logo を直接、かつ十分な詳細度で指定する。
 */
.site-header .custom-logo,
.site-header .custom-logo-link img {
	height: 58px;
	width: auto;
	max-width: none;
	object-fit: contain;
}

.gnav-group { display: flex; align-items: center; gap: 32px; min-width: 0; }
.gnav { display: flex; align-items: center; gap: 28px; min-width: 0; flex-shrink: 1; }
.gnav__list { display: flex; align-items: center; gap: 24px; }
.gnav__list a {
	font-size: 14px;
	font-weight: 500;
	opacity: 0.9;
	white-space: nowrap;
	transition: opacity var(--duration-fast) var(--ease-standard), color var(--duration-fast) var(--ease-standard);
}
.gnav__list a:hover { opacity: 1; color: var(--color-accent); }

.gnav__cta { flex-shrink: 0; }

.hamburger {
	display: none;
	width: 44px; height: 44px;
	background: transparent;
	border: 1px solid var(--color-hairline);
	border-radius: var(--radius-sm);
	position: relative;
}
.hamburger span,
.hamburger span::before,
.hamburger span::after {
	content: '';
	position: absolute;
	left: 12px; right: 12px;
	height: 2px;
	background: var(--color-text);
	transition: transform var(--duration-fast) var(--ease-standard), opacity var(--duration-fast) var(--ease-standard);
}
.hamburger span { top: 50%; transform: translateY(-50%); }
.hamburger span::before { top: -8px; }
.hamburger span::after { top: 8px; }
.hamburger[aria-expanded="true"] span { background: transparent; }
.hamburger[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.hamburger[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

.mobile-nav {
	position: fixed;
	inset: 0;
	top: 73px;
	background: var(--color-bg);
	padding: 32px var(--container-pad);
	transform: translateY(-12px);
	opacity: 0;
	visibility: hidden;
	transition: opacity var(--duration-fast) var(--ease-standard), transform var(--duration-fast) var(--ease-standard), visibility 0s linear var(--duration-fast);
	z-index: 99;
}
.mobile-nav.is-open {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
	transition-delay: 0s;
}
.mobile-nav ul { display: flex; flex-direction: column; gap: 24px; }
.mobile-nav a { font-size: 20px; font-weight: 700; }
.mobile-nav .btn { margin-top: 32px; width: 100%; justify-content: center; }

@media (max-width: 900px) {
	.gnav__list, .gnav__cta { display: none; }
	.hamburger { display: block; }
}

/* ===== Footer ===== */
.site-footer {
	background: var(--color-footer-bg);
	border-top: 1px solid var(--color-hairline);
	padding-block: 56px 32px;
}
.site-footer__top {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: 40px;
	padding-bottom: 32px;
}
.site-footer__brand .custom-logo,
.site-footer__brand img {
	height: 69px;
	width: auto;
	max-width: none;
	object-fit: contain;
	margin-bottom: 12px;
}
.site-footer__address { color: var(--color-text-muted); font-size: 14px; max-width: 320px; }
.site-footer__nav { display: flex; flex-wrap: wrap; gap: 24px; }
.site-footer__nav a { font-size: 14px; color: var(--color-text-muted); }
.site-footer__nav a:hover { color: var(--color-text); }
.site-footer__bottom {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: 12px;
	padding-top: 24px;
	border-top: 1px solid var(--color-hairline);
	font-size: 12px;
	color: var(--color-text-muted);
}
.site-footer__legal a { text-decoration: underline; }

/* skip padding under fixed header */
.site-main { padding-top: 73px; }