/* ============================================================
   新栄祭2026 協賛セクション用スタイル
   既存の css/layout.css の後に読み込んでください。
   サイトの --main-color(#0C0A3B) / --sub-color(#4BA9B9) を継承し、
   祭りらしいピンク×オレンジのアクセントカラーを差し色として使用しています。
============================================================ */

.sponsor_sec {
	position: relative;
	padding: 70px 20px;
	background:
		radial-gradient(circle at 15% 20%, rgba(255, 62, 150, 0.07), transparent 45%),
		radial-gradient(circle at 85% 80%, rgba(75, 169, 185, 0.10), transparent 45%),
		#F7F7F5;
	overflow: hidden;
}

.sponsor_inner {
	position: relative;
	max-width: 1080px;
	margin: 0 auto;
}

/* バッジ */
.sponsor_badge {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	margin-bottom: 24px;
	padding: 8px 20px 8px 16px;
	border-radius: 999px;
	background: linear-gradient(90deg, #0C0A3B, #1a1660);
	box-shadow: 0 6px 16px rgba(12, 10, 59, 0.25);
}
.sponsor_badge_en {
	font-family: 'Roboto', sans-serif;
	font-size: 12px;
	letter-spacing: 0.15em;
	color: #EB982C;
	font-weight: 700;
}
.sponsor_badge_ja {
	font-size: 14px;
	font-weight: 700;
	color: #fff;
	position: relative;
	padding-left: 12px;
}
.sponsor_badge_ja::before {
	content: "";
	position: absolute;
	left: 0;
	top: 50%;
	transform: translateY(-50%);
	width: 4px;
	height: 4px;
	border-radius: 50%;
	background: #4BA9B9;
}

/* レイアウト */
.sponsor_flex {
	display: flex;
	align-items: stretch;
	gap: 56px;
	background: #fff;
	border-radius: 24px;
	box-shadow: 0 20px 50px rgba(12, 10, 59, 0.10);
	padding: 40px;
	position: relative;
}
.sponsor_flex::before {
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 6px;
	border-radius: 24px 24px 0 0;
	background: linear-gradient(90deg, #FF3E96, #EB982C, #4BA9B9);
}

.sponsor_img {
	flex: 0 0 300px;
	display: flex;
	align-items: flex-start;
	justify-content: center;
}
.sponsor_img img {
	width: 100%;
	max-width: 300px;
	border-radius: 12px;
	box-shadow: 0 16px 32px rgba(0, 0, 0, 0.18);
	transform: rotate(-2deg);
	transition: transform .3s ease;
}
.sponsor_sec:hover .sponsor_img img {
	transform: rotate(0deg) scale(1.02);
}

.sponsor_txt {
	flex: 1;
	display: flex;
	flex-direction: column;
	justify-content: center;
}
.sponsor_ttl {
	font-size: 32px;
	font-weight: 700;
	color: #0C0A3B;
	line-height: 1.5;
	margin-bottom: 14px;
}
.sponsor_lead {
	font-size: 18px;
	font-weight: 700;
	color: #0C0A3B;
	margin-bottom: 20px;
}
.sponsor_lead .mark {
	background: linear-gradient(transparent 65%, rgba(255, 62, 150, 0.28) 65%);
	padding: 0 2px;
}
.sponsor_body {
	font-size: 15px;
	line-height: 2;
	color: #333;
	margin-bottom: 28px;
}

.sponsor_info {
	display: flex;
	flex-wrap: wrap;
	gap: 12px;
	margin-bottom: 32px;
}
.sponsor_info dl {
	display: flex;
	align-items: center;
	gap: 8px;
	background: #F3F3EF;
	border-radius: 8px;
	padding: 8px 16px;
	margin: 0;
}
.sponsor_info dt {
	font-size: 12px;
	font-weight: 700;
	color: #fff;
	background: #4BA9B9;
	border-radius: 4px;
	padding: 3px 8px;
}
.sponsor_info dd {
	font-size: 14px;
	font-weight: 700;
	color: #0C0A3B;
	margin: 0;
}

.sponsor_cta .btn {
	display: inline-block;
}

/* レスポンシブ */
@media (max-width: 768px) {
	.sponsor_sec { padding: 50px 16px; }
	.sponsor_flex {
		flex-direction: column;
		gap: 28px;
		padding: 28px 22px;
	}
	.sponsor_img { flex: none; }
	.sponsor_img img { max-width: 220px; }
	.sponsor_ttl { font-size: 24px; }
	.sponsor_info { gap: 8px; }
}