:root {
	--bg-from: #f0f9ff;
	/* sky-50 */
	--bg-to: #eff6ff;
	/* blue-50 */
	--ink: #0f172a;
	/* slate-900 */
	--ink-2: #334155;
	/* slate-700 */
	--ink-3: #64748b;
	/* slate-500/600 */
	--line: #bae6fd;
	/* sky-200 */
	--ring: #e0f2fe;
	/* sky-100 */
	--brand: #0369a1;
	/* sky-700 */
	--brand-soft: #e0f2fe;
	--card-bg: rgba(255, 255, 255, .8);
	--shadow: 0 8px 20px rgba(2, 132, 199, .08);
	--radius: 18px;
}

/* base */
* {
	box-sizing: border-box
}

html,
body {
	height: 100%
}

body {
	margin: 0;
	font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Yu Gothic", Meiryo, sans-serif;
	color: var(--ink-2);
	background: linear-gradient(180deg, var(--bg-from), var(--bg-to));
}

img {
	display: block;
	max-width: 100%;
	height: auto
}

a {
	color: var(--brand);
	text-decoration: none
}

a:hover {
	opacity: .9
}

/* containers & sections */
.container {
	max-width: 1120px;
	margin: 0 auto;
	padding: 0 16px
}

.section {
	padding: 38px 0
}

.section-title {
	font-size: 28px;
	color: var(--ink);
	margin: 0 0 8px
}

.sub-title {
	font-size: 18px;
	margin: 20px 0 8px;
	color: var(--ink)
}

.section-text {
	line-height: 1.9
}

.section-text.small {
	font-size: 14px;
	color: var(--ink-2)
}

/* background blobs */
.bg-blobs {
	position: fixed;
	inset: 0;
	overflow: hidden;
	pointer-events: none
}

.blob {
	position: absolute;
	filter: blur(32px);
	border-radius: 9999px
}

.blob-1 {
	width: 18rem;
	height: 18rem;
	left: -5rem;
	top: -6rem;
	background: rgba(125, 211, 252, .35)
}

.blob-2 {
	width: 20rem;
	height: 20rem;
	right: -4rem;
	top: 32%;
	background: rgba(191, 219, 254, .35)
}

.blob-3 {
	width: 16rem;
	height: 16rem;
	left: 25%;
	bottom: -2rem;
	background: rgba(186, 230, 253, .5)
}

/* header */
.site-header {
	position: sticky;
	top: 0;
	z-index: 40;
	backdrop-filter: saturate(1.2) blur(10px);
	background: rgba(255, 255, 255, .7);
	border-bottom: 1px solid var(--ring);
}

.header-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 12px 16px;
}

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

.brand-logo {
	width: 40px;
	height: 40px;
	border-radius: 9999px;
	box-shadow: 0 2px 6px rgba(2, 132, 199, .15);
	outline: 1px solid var(--line)
}

.brand-tag {
	margin: 0;
	color: #0369a1;
	letter-spacing: .12em;
	font-size: 12px
}

.brand-title {
	margin: 2px 0 0;
	font-weight: 600;
	font-size: 18px;
	color: var(--ink)
}

.nav {
	display: none;
	gap: 20px
}

.nav a {
	font-size: 14px;
	color: #0ea5e9
}

.nav a:hover {
	color: #0284c7
}

@media (min-width:768px) {
	.nav {
		display: flex
	}
}

/* hero */
.hero {
	width: 100%;
	border: 1px solid var(--ring);
	box-shadow: var(--shadow);
	background: rgba(255, 255, 255, .7)
}

.hero--bg {
	background-size: cover;
	background-position: center;
	min-height: 28vw;
}

.hero-inner {
	width: 100%;
	aspect-ratio: 21/9
}

@media (min-width:768px) {
	.hero-inner {
		aspect-ratio: 16/6
	}
}

.hero-placeholder {
	height: 100%;
	display: grid;
	place-items: center;
	text-align: center;
	padding: 16px
}

.hero-emoji {
	font-size: 72px
}

@media (min-width:768px) {
	.hero-emoji {
		font-size: 96px
	}
}

.hero-note {
	margin: .4rem 0 0;
	font-size: 14px;
	color: var(--ink-3)
}

.hero-hint {
	margin: .2rem 0 0;
	font-size: 12px;
	color: #94a3b8
}

/* intro */
.intro-title {
	font-size: 28px;
	line-height: 1.3;
	color: var(--ink);
	margin: 24px 0 0
}

@media (min-width:768px) {
	.intro-title {
		font-size: 36px
	}
}

.intro-title span {
	color: var(--brand)
}

.intro-text {
	margin-top: 12px;
	line-height: 1.9
}

/* cards */
.card {
	background: var(--card-bg);
	border: 1px solid var(--ring);
	border-radius: var(--radius);
	padding: 22px;
	box-shadow: var(--shadow);
}

.card-title {
	margin: 0 0 6px;
	color: var(--ink);
	font-weight: 600
}

.card-text {
	margin: 0;
	font-size: 14px;
	color: var(--ink-2)
}

/* grids */
.grid {
	display: grid;
	gap: 18px
}

.grid-4 {
	grid-template-columns: 1fr
}

.grid-3 {
	grid-template-columns: 1fr
}

.grid-2 {
	grid-template-columns: 1fr
}

.grid-3-1 {
	display: grid;
	gap: 24px
}

@media (min-width:768px) {
	.grid-4 {
		grid-template-columns: repeat(2, 1fr)
	}

	.grid-3 {
		grid-template-columns: repeat(3, 1fr)
	}

	.grid-2 {
		grid-template-columns: repeat(2, 1fr)
	}

	.grid-3-1 {
		grid-template-columns: 1fr 2fr
	}
}

/* definition list */
.deflist {
	display: grid;
	grid-template-columns: 1fr;
	gap: 12px
}

.defitem {
	display: grid;
	grid-template-columns: 140px 1fr;
	gap: 10px;
	align-items: start
}

.defitem dt {
	color: #64748b
}

.defitem dd {
	margin: 0;
	color: var(--ink);
	font-weight: 600
}

/* CEO */
.ceo-photo {
	border: 1px solid var(--ring);
	border-radius: 16px;
	background: #f0f9ff;
	box-shadow: var(--shadow);
	overflow: hidden;
	aspect-ratio: 3/4;
	display: grid;
	place-items: center;
}

.ceo-photo-ph {
	text-align: center;
	color: var(--ink-3)
}

.ceo-emoji {
	font-size: 56px
}

.ceo-note {
	font-size: 12px;
	margin-top: 6px
}

.ceo-name {
	text-align: center;
	margin: 10px 0 0;
	font-size: 14px;
	font-weight: 600
}

.ceo-body .small {
	font-size: 14px
}

/* timeline */
.timeline {
	list-style: none;
	padding: 0;
	margin: 10px 0 0;
	display: grid;
	gap: 10px
}

.timeline .time {
	color: #0369a1;
	font-weight: 600;
	display: inline-block;
	width: 96px
}

/* contact */
.contact-card {
	display: flex;
	align-items: center;
	justify-content: space-between;
	background: var(--card-bg);
	border: 1px solid var(--ring);
	border-radius: var(--radius);
	padding: 16px;
	box-shadow: var(--shadow)
}

.contact-left {
	display: flex;
	align-items: center;
	gap: 12px
}

.icon {
	width: 20px;
	height: 20px;
	color: #0369a1
}

.contact-label {
	margin: 0;
	font-size: 12px;
	color: #64748b
}

.contact-value {
	margin: 2px 0 0;
	font-weight: 700;
	word-break: break-all
}

.btn {
	border-radius: 12px;
	padding: 8px 12px;
	font-size: 14px;
	cursor: pointer;
	border: none
}

.btn-ghost {
	background: #e0f2fe;
	color: #075985;
	outline: 1px solid #bae6fd
}

.btn-ghost:hover {
	background: #bae6fd
}

/* footer */
.site-footer {
	border-top: 1px solid var(--ring);
	background: rgba(255, 255, 255, .7);
	margin-top: 28px
}

.footer-inner {
	display: flex;
	flex-direction: column;
	gap: 12px;
	align-items: center;
	justify-content: space-between;
	padding: 18px 16px;
	color: #475569;
	font-size: 14px
}

.nav-footer {
	display: flex;
	gap: 16px
}

/* === 背景ブロブの読みやすさ調整 === */
.bg-blobs {
	/* 中央のテキスト帯では薄く見えるようにマスク */
	-webkit-mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.35) 0%, rgba(0, 0, 0, 0.35) 35%, rgba(0, 0, 0, 1) 60%);
	mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.35) 0%, rgba(0, 0, 0, 0.35) 35%, rgba(0, 0, 0, 1) 60%);
}

.blob {
	filter: blur(34px);
}

.blob-1 {
	width: 18rem;
	height: 18rem;
	left: -6rem;
	top: -6rem;
	background: rgba(125, 211, 252, .28);
	/* 少し弱め */
}

.blob-2 {
	width: 22rem;
	height: 22rem;
	right: -8rem;
	top: -6rem;
	/* 画面右上に退避（中央ラインから外す） */
	background: rgba(191, 219, 254, .25);
}

.blob-3 {
	width: 20rem;
	height: 20rem;
	left: -8rem;
	bottom: -8rem;
	/* 左下へ退避（中央ラインから外す） */
	background: rgba(186, 230, 253, .32);
}

@media (min-width: 1024px) {
	.blob-2 {
		right: -10rem;
		top: -8rem;
	}

	.blob-3 {
		left: -10rem;
		bottom: -10rem;
	}
}

/* 連絡先カード内の画像アイコン */
.icon-img {
	width: 20px;
	height: 20px;
	object-fit: cover;
	border-radius: 4px;
}

/* WeChat QR（独立カード） */
.wechat-qr__body {
	display: flex;
	align-items: center;
	gap: 20px;
	margin-top: 12px;
	flex-wrap: wrap;
}

.wechat-qr__thumb {
	display: block;
	border-radius: 14px;
	overflow: hidden;
	outline: 1px solid var(--ring);
	box-shadow: var(--shadow);
}

.wechat-qr__thumb img {
	display: block;
	width: 160px;
	height: 160px;
	object-fit: cover;
	background: #fff;
}

@media (min-width:768px) {
	.wechat-qr__thumb img {
		width: 200px;
		height: 200px;
	}
}

.wechat-qr__meta {
	display: flex;
	flex-direction: column;
	gap: 10px;
}

.wechat-qr__id {
	display: flex;
	align-items: center;
	gap: 10px;
	flex-wrap: wrap;
}

.wechat-qr__id img {
	width: 22px;
	height: 22px;
	border-radius: 4px;
	object-fit: cover;
}

.wechat-qr__id span {
	font-weight: 700;
	color: var(--ink);
}

.wechat-qr__hint {
	margin: 0;
	font-size: 12px;
	color: #64748b;
}

/* === WeChat QR 専用調整 === */
/* カード自体をコンテナ中央で約65%幅に */
.wechat-qr--narrow {
	width: 100%;
	margin-inline: auto;
}

@media (min-width: 768px) {
	.wechat-qr--narrow {
		width: 65%;
	}
}

/* 見出しの左にWeChatロゴを並べる */
.wechat-qr__title {
	display: flex;
	align-items: center;
	gap: 10px;
	margin-bottom: 6px;
}

.wechat-qr__logo {
	width: 22px;
	height: 22px;
	border-radius: 4px;
	object-fit: cover;
}

/* QR本体を中央寄せ */
.wechat-qr__body--center {
	justify-content: center;
	/* 既存の .wechat-qr__body を上書き */
}

/* デスクトップでQRを少し大きめに */
@media (min-width: 768px) {
	.wechat-qr__thumb img {
		width: 240px;
		height: 240px;
	}
}