@charset "UTF-8";

/* =========================================
   共通変数・リセット
========================================= */
:root {
	--bg-base: #0a0a0c;
	--bg-glass: rgba(20, 20, 22, 0.4);
	--border-glass: rgba(255, 255, 255, 0.08);
	--text-main: #ffffff;
	--text-muted: #a0a0a0;
	--gold: #c5a059;
	--gold-light: #dfbc77;
	--gold-glow: rgba(197, 160, 89, 0.3);
	--font-sans: 'Noto Sans JP', sans-serif;
	--font-serif: 'Playfair Display', 'Shippori Mincho', serif;
}

* {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

body {
	background-color: var(--bg-base);
	color: var(--text-main);
	font-family: var(--font-sans);
	-webkit-font-smoothing: antialiased;
	line-height: 1.6;
	overflow-x: hidden;
}

/* =========================================
   動的な背景エフェクト (オーブ)
========================================= */
.bg-dynamic {
	position: fixed;
	top: 0; left: 0; width: 100%; height: 100%;
	z-index: -3;
	background-color: var(--bg-base);
	overflow: hidden;
}

.bg-dynamic::after {
	content: '';
	position: absolute;
	top: 0; left: 0; width: 100%; height: 100%;
	background-image: radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
	background-size: 30px 30px;
	z-index: 1;
}

.orb {
	position: absolute;
	border-radius: 50%;
	filter: blur(120px);
	opacity: 0.4;
	animation: floatOrb 20s infinite ease-in-out alternate;
	z-index: 0;
}
.orb-1 {
	width: 60vw; height: 60vw;
	background: #c5a059;
	top: -10%; left: -10%;
	animation-delay: 0s;
}
.orb-2 {
	width: 50vw; height: 50vw;
	background: #2a3a5a;
	bottom: -10%; right: -10%;
	animation-delay: -5s;
}
.orb-3 {
	width: 40vw; height: 40vw;
	background: #5a4b2c;
	top: 40%; left: 50%;
	transform: translate(-50%, -50%);
	animation-delay: -10s;
	opacity: 0.2;
}

@keyframes floatOrb {
	0% { transform: translate(0, 0) scale(1); }
	100% { transform: translate(5%, 5%) scale(1.1); }
}

.blur-overlay {
	position: fixed;
	top: 0; left: 0; width: 100%; height: 100%;
	backdrop-filter: blur(30px);
	-webkit-backdrop-filter: blur(30px);
	z-index: -2;
}

/* =========================================
   ヘッダー
========================================= */
header {
	position: fixed;
	top: 0; left: 0; width: 100%;
	padding: 1.2rem 3rem;
	display: flex;
	justify-content: space-between;
	align-items: center;
	z-index: 100;
	background: rgba(10, 10, 12, 0.6);
	backdrop-filter: blur(20px);
	-webkit-backdrop-filter: blur(20px);
	border-bottom: 1px solid var(--border-glass);
}
.logo-area {
	text-decoration: none;
	display: flex;
	flex-direction: column;
}
.logo-title {
	font-family: var(--font-serif);
	font-size: 1.4rem;
	font-weight: 700;
	color: #fff;
	letter-spacing: 0.15em;
	line-height: 1;
}
.logo-sub {
	font-family: var(--font-sans);
	font-size: 0.55rem;
	color: var(--gold);
	letter-spacing: 0.25em;
	margin-top: 0.3rem;
}
.header-nav {
	display: flex;
	align-items: center;
	gap: 2.5rem;
}
.header-nav a.nav-link {
	color: var(--text-muted);
	text-decoration: none;
	font-size: 0.85rem;
	transition: color 0.3s;
	position: relative;
}
.header-nav a.nav-link:hover {
	color: #fff;
}
.header-nav a.nav-link::after {
	content: '';
	position: absolute;
	bottom: -5px; left: 0; width: 0; height: 1px;
	background: var(--gold);
	transition: width 0.3s ease;
}
.header-nav a.nav-link:hover::after {
	width: 100%;
}
.btn-login {
	background: rgba(255,255,255,0.05);
	border: 1px solid var(--border-glass);
	padding: 0.6rem 1.8rem;
	border-radius: 30px;
	color: #fff !important;
	text-decoration: none;
	font-size: 0.85rem;
	transition: all 0.3s ease;
	box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}
.btn-login:hover {
	border-color: var(--gold);
	background: rgba(197, 160, 89, 0.15);
	box-shadow: 0 0 20px var(--gold-glow);
}

/* =========================================
   メインレイアウト・セクションタイトル
========================================= */
.about-container {
	min-height: 80vh;
	max-width: 900px;
	margin: 0 auto;
	padding: 10rem 2rem 4rem;
	position: relative;
	z-index: 10;
}
.section-title {
	text-align: center;
	margin-bottom: 4rem;
}
.section-title h2 {
	font-family: var(--font-serif);
	font-size: 2.5rem;
	color: #fff;
	margin-bottom: 0.5rem;
	font-weight: 500;
}
.section-title p {
	color: var(--gold);
	font-size: 0.9rem;
	letter-spacing: 0.15em;
}

/* =========================================
   運営会社カード & テーブルスタイル
========================================= */
.about-card {
	background: var(--bg-glass);
	backdrop-filter: blur(15px);
	-webkit-backdrop-filter: blur(15px);
	border: 1px solid var(--border-glass);
	padding: 3.5rem;
	border-radius: 16px;
	box-shadow: 0 10px 30px rgba(0,0,0,0.3);
	position: relative;
	overflow: hidden;
	
	/* 要素消失バグ対策を追加 */
	-webkit-backface-visibility: hidden;
	backface-visibility: hidden;
	will-change: transform, backdrop-filter;
}

/* カード上部の極細ハイライト線 */
.about-card::before {
	content: '';
	position: absolute;
	top: 0; left: 0; width: 100%; height: 1px;
	background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
}

.about-table {
	width: 100%;
	border-collapse: collapse;
	text-align: left;
}

.about-table tr {
	border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.about-table tr:last-child {
	border-bottom: none; /* 最後の行の線は消す */
}

.about-table th {
	width: 25%;
	padding: 1.8rem 1rem;
	font-size: 0.95rem;
	font-weight: 500;
	color: var(--gold-light);
	vertical-align: top;
	letter-spacing: 0.05em;
}

.about-table td {
	padding: 1.8rem 1rem;
	font-size: 0.95rem;
	color: #e0e0e0;
	line-height: 1.8;
	vertical-align: top;
}

/* 事業内容の箇条書き用スタイル */
.about-table td ul {
	list-style-type: none;
}
.about-table td ul li {
	position: relative;
	padding-left: 1.2rem;
	margin-bottom: 0.4rem;
}
.about-table td ul li:last-child {
	margin-bottom: 0;
}
/* 箇条書きの先頭に繊細なゴールドのドットを付与 */
.about-table td ul li::before {
	content: '';
	position: absolute;
	left: 0;
	top: 0.6rem;
	width: 4px;
	height: 4px;
	background-color: var(--gold);
	border-radius: 50%;
}

/* =========================================
   フッター
========================================= */
footer {
	border-top: 1px solid var(--border-glass);
	padding: 4rem 2rem;
	text-align: center;
	margin-top: 5rem;
	background: rgba(0,0,0,0.5);
	backdrop-filter: blur(10px);
	position: relative;
	z-index: 10;
}
.footer-links {
	margin-bottom: 2rem;
}
.footer-links a {
	color: var(--text-muted);
	text-decoration: none;
	font-size: 0.85rem;
	margin: 0 1.2rem;
	transition: color 0.3s;
}
.footer-links a:hover {
	color: var(--gold);
}
.copyright {
	color: #666;
	font-size: 0.75rem;
	letter-spacing: 0.1em;
}

/* =========================================
   レスポンシブ対応
========================================= */
@media screen and (max-width: 768px) {
	header { padding: 1rem 1.5rem; }
	.about-container { padding-top: 8rem; }
	.section-title h2 { font-size: 2rem; }
	.about-card { padding: 1.5rem; }
	.about-table th, .about-table td {
		display: block;
		width: 100%;
		padding: 0.8rem 0;
	}
	.about-table th {
		padding-bottom: 0;
		color: var(--gold-light);
	}
	.about-table tr {
		padding: 0.5rem 0;
		display: block;
	}
}

/* =========================================
   カスタムスクロールバー（前回の設定を継承）
========================================= */
html {
	scrollbar-width: thin;
	scrollbar-color: rgba(197, 160, 89, 0.6) var(--bg-base);
}
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-base); border-left: 1px solid var(--border-glass); }
::-webkit-scrollbar-thumb { background: rgba(197, 160, 89, 0.4); border-radius: 10px; border: 2px solid var(--bg-base); }
::-webkit-scrollbar-thumb:hover { background: var(--gold-light); }