:root {
	--primary-color: #1e3d59;
	--secondary-color: #4a90a4;
	--accent-color: #87ceeb;
	--bg-color: #ffffff;
	--light-bg-color: #f8f9fa;
	--text-color: #333333;
	--text-light-color: #555555;
	--border-color: #e9ecef;
	--gray-color: #6c757d;
}

* {
	box-sizing: border-box;
}

body {
	font-family: "Noto Sans JP", "ヒラギノ角ゴ Pro", "Meiryo", sans-serif;
	line-height: 1.6;
	color: var(--text-color);
	background-color: var(--bg-color);
}

.container {
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 20px;
}

.section {
	padding: 60px 0;
}

.section:first-child {
	padding-top: 0;
}

.section.section-alt {
	background-color: var(--light-bg-color);
}

.section.section-title {
	font-size: 28px;
	text-align: center;
	margin-bottom: 40px;
	position: relative;
	color: var(--text-color);
	font-weight: 700;
}

.section.section-title::after {
	content: "";
	display: block;
	width: 80px;
	height: 4px;
	background-color: var(--primary-color);
	margin: 20px auto 0;
}

.btn {
	display: inline-block;
	padding: 12px 24px;
	background-color: var(--primary-color);
	color: white;
	text-decoration: none;
	border-radius: 6px;
	font-weight: 500;
	transition: all 0.3s ease;
	border: none;
	cursor: pointer;
}

.btn:hover {
	background-color: var(--secondary-color);
	transform: translateY(-2px);
	box-shadow: 0 8px 25px rgba(30, 61, 89, 0.3);
}

.btn.btn-lg {
	padding: 16px 32px;
	font-size: 18px;
}

.btn:disabled {
	background-color: var(--gray-color);
	cursor: not-allowed;
	transform: none;
	box-shadow: none;
}

.card {
	background: var(--bg-color);
	border-radius: 12px;
	box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
	padding: 24px;
	transition: all 0.3s ease;
}

.card:hover {
	transform: translateY(-4px);
	box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.grid {
	display: grid;
	gap: 20px;
}

.grid.grid-4 {
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.hero-overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(135deg,
			rgba(30, 61, 89, 0.8) 0%,
			rgba(74, 144, 164, 0.7) 100%);
}

.text-hero-title {
	font-size: 48px;
	font-weight: 700;
	color: white;
	text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.text-hero-subtitle {
	font-size: 18px;
	color: white;
	font-weight: 400;
}

.event-banner {
	position: relative;
	overflow: hidden;
	border-radius: 12px;
	transition: all 0.3s ease;
	cursor: pointer;
}

.event-banner:hover {
	transform: scale(1.05);
	box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.event-banner:hover .banner-overlay {
	opacity: 1;
}

.event-banner img {
	width: 100%;
	height: auto;
	aspect-ratio: 16 / 9;
	-o-object-fit: cover;
	object-fit: cover;
	transition: transform 0.3s ease;
}

.event-banner .banner-overlay {
	position: absolute;
	inset: 0;
	background: rgba(0, 0, 0, 0.6);
	display: flex;
	align-items: center;
	justify-content: center;
	opacity: 0;
	transition: opacity 0.3s ease;
}

.event-banner .banner-overlay .overlay-text {
	color: white;
	font-size: 16px;
	font-weight: 500;
	text-align: center;
}

.logo-section {
	display: flex;
	align-items: center;
	gap: 30px;
}

.logo-section .logo-container {
	flex-shrink: 0;
}

.logo-section .logo-container img {
	width: 150px;
	height: 150px;
	-o-object-fit: contain;
	object-fit: contain;
}

.logo-section .content {
	flex: 1;
	font-size: 16px;
	line-height: 1.8;
	color: var(--text-light-color);
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
	.container {
		padding: 0 16px;
	}

	.section {
		padding: 40px 0;
	}

	.section.section-title {
		font-size: 24px;
		margin-bottom: 30px;
	}

	.text-hero-title {
		font-size: 32px;
	}

	.text-hero-subtitle {
		font-size: 14px;
	}

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

	.logo-section {
		flex-direction: column;
		text-align: center;
		gap: 20px;
	}

	.logo-section .logo-container img {
		width: 120px;
		height: 120px;
	}
}

@media (max-width: 480px) {
	.section {
		padding: 30px 0;
	}

	.text-hero-title {
		font-size: 28px;
	}

	.logo-section .logo-container img {
		width: 100px;
		height: 100px;
	}

	.btn {
		padding: 10px 20px;
		font-size: 14px;
	}

	.btn.btn-lg {
		padding: 14px 28px;
		font-size: 16px;
	}
}

/* ローディングアニメーション */
.fade-in {
	opacity: 0;
	animation: fadeIn 0.5s ease-in-out forwards;
}

@keyframes fadeIn {
	to {
		opacity: 1;
	}
}

/* ヘッダー固定スタイル */
.header-fixed {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 100;
	background: rgba(255, 255, 255, 0.95);
	-webkit-backdrop-filter: blur(10px);
	backdrop-filter: blur(10px);
	box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
	transition: all 0.3s ease;
}

/* フッタースタイル */
.footer {
	background-color: var(--light-bg-color);
	color: var(--text-light-color);
	font-size: 12px;
	line-height: 1.6;
	padding: 30px 0;
}

.footer .footer-content {
	text-align: center;
	margin-bottom: 20px;
}

.footer .copyright {
	text-align: center;
	font-size: 11px;
	color: var(--gray-color);
}

/* ./parts/common-header.html */

header {
	background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
	color: white;
	padding: 12px 0;
	transition: all 0.3s ease;
}

header .header-container {
	display: flex;
	align-items: center;
	justify-content: space-between;
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 20px;
}

header .logo {
	display: flex;
	align-items: center;
	gap: 15px;
}

header .logo img {
	height: 60px;
	width: auto;
	-o-object-fit: contain;
	object-fit: contain;
}

header .site-title {
	font-size: 24px;
	font-weight: 700;
	color: white;
	text-decoration: none;
	font-family: "Noto Sans JP", sans-serif;
}

@media (max-width: 768px) {
	header .header-container {
		padding: 0 16px;
	}

	header .logo {
		flex-direction: column;
		gap: 8px;
		text-align: center;
	}

	header .logo img {
		height: 45px;
	}

	header .site-title {
		font-size: 18px;
	}
}

@media (max-width: 480px) {
	header .site-title {
		font-size: 16px;
	}
}

/* ./parts/common-footer.html */

.footer {
	background-color: var(--light-bg-color);
	color: var(--text-light-color);
	padding: 30px 0;
}

.footer .footer-container {
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 20px;
	text-align: center;
}

.footer .footer-content {
	margin-bottom: 20px;
	line-height: 1.8;
	font-size: 12px;
}

.footer .footer-content .organization-name {
	font-weight: 500;
	margin-bottom: 8px;
}

.footer .footer-content .contact-info {
	margin-top: 8px;
}

.footer .copyright {
	font-size: 11px;
	color: var(--gray-color);
	border-top: 1px solid var(--border-color);
	padding-top: 15px;
}

@media (max-width: 768px) {
	.footer .footer-container {
		padding: 0 16px;
	}

	.footer .footer-content {
		font-size: 11px;
	}

	.footer .copyright {
		font-size: 10px;
	}
}

/* ./parts/index-hero.html */

.hero-section {
	position: relative;
	height: 500px;
	overflow: hidden;
	display: flex;
	align-items: center;
	justify-content: center;
	background-image: url('../img/fv_002.jpg');
	background-size: cover;
	background-position: center;
	background-attachment: fixed;
}

.hero-section .hero-overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(135deg,
			rgba(30, 61, 89, 0.8) 0%,
			rgba(74, 144, 164, 0.7) 100%);
}

.hero-section .hero-content {
	position: relative;
	z-index: 2;
	text-align: center;
	color: white;
	max-width: 800px;
	padding: 0 20px;
}

.hero-section .hero-content .hero-title {
	font-size: 48px;
	font-weight: 700;
	margin-bottom: 20px;
	text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
	line-height: 1.2;
	animation: fadeInUp 1s ease-out;
}

.hero-section .hero-content .hero-subtitle {
	font-size: 18px;
	font-weight: 400;
	margin-bottom: 30px;
	text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
	opacity: 0.95;
	animation: fadeInUp 1s ease-out 0.3s both;
}

.hero-section .hero-content .hero-description {
	font-size: 16px;
	line-height: 1.6;
	margin-bottom: 40px;
	opacity: 0.9;
	animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-section .hero-content .hero-cta {
	animation: fadeInUp 1s ease-out 0.9s both;
}

@keyframes fadeInUp {
	from {
		opacity: 0;
		transform: translateY(30px);
	}

	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@media (max-width: 768px) {
	.hero-section {
		height: 300px;
		background-attachment: scroll;
	}

	.hero-section .hero-content {
		padding: 0 16px;
	}

	.hero-section .hero-content .hero-title {
		font-size: 32px;
		margin-bottom: 16px;
	}

	.hero-section .hero-content .hero-subtitle {
		font-size: 14px;
		margin-bottom: 20px;
	}

	.hero-section .hero-content .hero-description {
		font-size: 14px;
		margin-bottom: 30px;
	}
}

@media (max-width: 480px) {
	.hero-section {
		height: 280px;
	}

	.hero-section .hero-content .hero-title {
		font-size: 28px;
	}

	.hero-section .hero-content .hero-subtitle {
		font-size: 13px;
	}

	.hero-section .hero-content .hero-description {
		font-size: 13px;
	}
}

/* ./parts/index-about.html */

.about-section {
	padding: 80px 0;
	background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 249, 250, 0.9) 100%);
}

.about-section .about-container {
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 20px;
}

.about-section .about-content {
	display: flex;
	align-items: center;
	gap: 40px;
	background: var(--bg-color);
	border-radius: 16px;
	padding: 40px;
	box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
	-webkit-backdrop-filter: blur(10px);
	backdrop-filter: blur(10px);
}

.about-section .about-content .logo-container {
	flex-shrink: 0;
}

.about-section .about-content .logo-container img {
	width: 150px;
	height: 150px;
	-o-object-fit: contain;
	object-fit: contain;
	border-radius: 12px;
	box-shadow: 0 4px 20px rgba(30, 61, 89, 0.15);
}

.about-section .about-content .content-text {
	flex: 1;
}

.about-section .about-content .content-text .about-title {
	font-size: 28px;
	font-weight: 700;
	color: var(--text-color);
	margin-bottom: 30px;
	position: relative;
}

.about-section .about-content .content-text .about-title::after {
	content: "";
	display: block;
	width: 80px;
	height: 4px;
	background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
	margin-top: 15px;
}

.about-section .about-content .content-text .about-description {
	font-size: 16px;
	line-height: 1.8;
	color: var(--text-light-color);
}

.about-section .about-content .content-text .about-description p {
	margin-bottom: 20px;
}

.about-section .about-content .content-text .about-description p:last-child {
	margin-bottom: 0;
}

.about-section .about-content .content-text .about-description strong {
	color: var(--primary-color);
	font-weight: 600;
}

.about-section .features-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: 24px;
	margin-top: 50px;
}

.about-section .features-grid .feature-card {
	background: var(--bg-color);
	padding: 30px;
	border-radius: 12px;
	text-align: center;
	box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
	transition: all 0.3s ease;
	border: 1px solid var(--border-color);
}

.about-section .features-grid .feature-card:hover {
	transform: translateY(-5px);
	box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
	border-color: var(--primary-color);
}

.about-section .features-grid .feature-card .feature-icon {
	width: 60px;
	height: 60px;
	background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	margin: 0 auto 20px;
}

.about-section .features-grid .feature-card .feature-icon .material-symbols-outlined {
	font-size: 28px;
	color: white;
}

.about-section .features-grid .feature-card .feature-title {
	font-size: 18px;
	font-weight: 600;
	color: var(--text-color);
	margin-bottom: 12px;
}

.about-section .features-grid .feature-card .feature-description {
	font-size: 14px;
	color: var(--text-light-color);
	line-height: 1.6;
}

@media (max-width: 768px) {
	.about-section {
		padding: 60px 0;
	}

	.about-section .about-container {
		padding: 0 16px;
	}

	.about-section .about-content {
		flex-direction: column;
		text-align: center;
		gap: 30px;
		padding: 30px 20px;
	}

	.about-section .about-content .logo-container img {
		width: 120px;
		height: 120px;
	}

	.about-section .about-content .content-text .about-title {
		font-size: 24px;
		margin-bottom: 25px;
	}

	.about-section .about-content .content-text .about-title::after {
		margin: 15px auto 0;
	}

	.about-section .about-content .content-text .about-description {
		font-size: 14px;
	}

	.about-section .features-grid {
		grid-template-columns: 1fr;
		gap: 20px;
		margin-top: 40px;
	}
}

@media (max-width: 480px) {
	.about-section {
		padding: 40px 0;
	}

	.about-section .about-content {
		padding: 25px 15px;
	}

	.about-section .about-content .logo-container img {
		width: 100px;
		height: 100px;
	}

	.about-section .about-content .content-text .about-title {
		font-size: 22px;
	}

	.about-section .features-grid .feature-card {
		padding: 24px 20px;
	}
}

/* ./parts/index-events.html */

.events-section {
	padding: 80px 0;
	background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

.events-section .section-header {
	text-align: center;
	margin-bottom: 60px;
}

.events-section .section-header .section-title {
	font-size: 28px;
	color: var(--text-color);
	font-weight: 700;
	margin-bottom: 20px;
	position: relative;
}

.events-section .section-header .section-title::after {
	content: "";
	display: block;
	width: 80px;
	height: 4px;
	background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
	margin: 20px auto 0;
	border-radius: 2px;
}

.events-section .section-header .section-subtitle {
	font-size: 16px;
	color: var(--text-light-color);
	line-height: 1.6;
}

.events-section .events-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: 24px;
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 20px;
}

.events-section .event-card {
	background: white;
	border-radius: 16px;
	overflow: hidden;
	box-shadow: 0 6px 25px rgba(30, 61, 89, 0.08);
	transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
	cursor: pointer;
	position: relative;
}

.events-section .event-card:hover {
	transform: translateY(-8px) scale(1.02);
	box-shadow: 0 20px 40px rgba(30, 61, 89, 0.15);
}

.events-section .event-card:hover .banner-image {
	transform: scale(1.1);
}

.events-section .event-card:hover .event-overlay {
	opacity: 1;
}

.events-section .event-card .banner-container {
	position: relative;
	overflow: hidden;
	aspect-ratio: 16 / 9;
}

.events-section .event-card .banner-container .banner-image {
	width: 100%;
	height: 100%;
	-o-object-fit: cover;
	object-fit: cover;
	transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.events-section .event-card .banner-container .event-overlay {
	position: absolute;
	inset: 0;
	background: linear-gradient(135deg,
			rgba(30, 61, 89, 0.85) 0%,
			rgba(74, 144, 164, 0.75) 100%);
	display: flex;
	align-items: center;
	justify-content: center;
	opacity: 0;
	transition: opacity 0.3s ease;
}

.events-section .event-card .banner-container .event-overlay .overlay-content {
	text-align: center;
	color: white;
}

.events-section .event-card .banner-container .event-overlay .overlay-content .overlay-title {
	font-size: 18px;
	font-weight: 600;
	margin-bottom: 8px;
}

.events-section .event-card .banner-container .event-overlay .overlay-content .overlay-text {
	font-size: 14px;
	opacity: 0.9;
}

.events-section .event-card .banner-container .year-badge {
	position: absolute;
	top: 12px;
	right: 12px;
	background: var(--primary-color);
	color: white;
	padding: 6px 12px;
	border-radius: 20px;
	font-size: 12px;
	font-weight: 600;
	-webkit-backdrop-filter: blur(10px);
	backdrop-filter: blur(10px);
}

.events-section .event-card .event-info {
	padding: 20px;
}

.events-section .event-card .event-info .event-title {
	font-size: 16px;
	font-weight: 600;
	color: var(--text-color);
	margin-bottom: 8px;
	line-height: 1.4;
}

.events-section .event-card .event-info .event-meta {
	display: flex;
	align-items: center;
	gap: 12px;
	color: var(--text-light-color);
	font-size: 14px;
}

.events-section .event-card .event-info .event-meta .meta-item {
	display: flex;
	align-items: center;
	gap: 4px;
}

.events-section .event-card .event-info .event-meta .meta-item .material-symbols-outlined {
	font-size: 16px;
}

@media (max-width: 768px) {
	.events-section {
		padding: 60px 0;
	}

	.events-section .events-grid {
		grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
		gap: 20px;
		padding: 0 16px;
	}

	.events-section .section-header {
		margin-bottom: 40px;
	}

	.events-section .section-header .section-title {
		font-size: 24px;
	}

	.events-section .section-header .section-subtitle {
		font-size: 14px;
	}
}

@media (max-width: 480px) {
	.events-section {
		padding: 40px 0;
	}

	.events-section .events-grid {
		grid-template-columns: 1fr;
		gap: 16px;
	}

	.events-section .event-card .event-info {
		padding: 16px;
	}

	.events-section .event-card .event-info .event-title {
		font-size: 15px;
	}

	.events-section .event-card .event-info .event-meta {
		font-size: 13px;
	}
}