.sai-cases-page {
	background: var(--bg, #F9F7F4);
	min-height: 60vh;
}

.sai-cases-hero {
	padding: 48px 24px 36px;
}

.sai-cases-hero h1 {
	font-size: 32px;
}

.sai-cases-layout {
	display: grid;
	grid-template-columns: 168px minmax(0, 1fr);
	gap: 28px;
	max-width: 1100px;
	margin: 0 auto;
	padding: 28px 24px 64px;
	align-items: start;
}

.sai-cases-year-nav {
	position: sticky;
	top: 148px;
	display: flex;
	flex-direction: column;
	gap: 2px;
	margin: 8px 0 0;
	padding: 4px 0 4px 18px;
	border-left: 1px solid var(--border, #E8E4DE);
}

.sai-cases-year-nav a {
	position: relative;
	display: block;
	padding: 7px 0;
	color: #b0aaa3;
	font-size: 20px;
	font-weight: 700;
	letter-spacing: -0.04em;
	line-height: 1.1;
	text-decoration: none;
}

.sai-cases-year-nav a::before {
	content: "";
	position: absolute;
	left: -22px;
	top: 50%;
	width: 7px;
	height: 7px;
	border-radius: 50%;
	background: #e8e4de;
	transform: translateY(-50%);
}

.sai-cases-year-nav a.sai-cases-year-all {
	margin-bottom: 6px;
	font-size: 13px;
	font-weight: 600;
	letter-spacing: 0.08em;
}

.sai-cases-year-nav a:hover {
	color: var(--primary, #2D2D2D);
	text-decoration: none;
}

.sai-cases-year-nav a.is-active {
	color: var(--primary, #2D2D2D);
	font-size: 28px;
}

.sai-cases-year-nav a.sai-cases-year-all.is-active {
	color: var(--accent, #C8A97E);
	font-size: 13px;
}

.sai-cases-year-nav a.is-active::before {
	left: -23px;
	width: 9px;
	height: 9px;
	background: var(--accent, #C8A97E);
}

.sai-lecture-pagination {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	flex-wrap: wrap;
	margin-top: 28px;
}

.sai-page-list {
	display: flex;
	align-items: center;
	gap: 4px;
	list-style: none;
	margin: 0;
	padding: 0;
}

a.sai-page-btn,
span.sai-page-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 36px;
	height: 36px;
	padding: 0 10px;
	border: 1px solid var(--border, #E8E4DE);
	border-radius: 8px;
	background: #fff;
	color: #444;
	font-size: 13px;
	font-weight: 600;
	line-height: 1;
	text-decoration: none;
}

a.sai-page-btn:hover {
	border-color: rgba(200, 169, 126, 0.7);
	color: #222;
	text-decoration: none;
}

a.sai-page-btn.is-active {
	background: #2b2b2b;
	border-color: #2b2b2b;
	color: #fff;
}

span.sai-page-btn.is-disabled {
	opacity: 0.35;
}

.sai-cases-empty {
	margin: 0;
	padding: 48px 16px;
	text-align: center;
	color: var(--muted, #5F5F5F);
}

.sai-cases-year {
	margin: 0 0 28px;
}

.sai-cases-year-label {
	margin: 0 0 14px;
	padding-bottom: 8px;
	border-bottom: 1px solid var(--border, #E8E4DE);
	font-size: 32px;
	font-weight: 700;
	letter-spacing: -0.04em;
	line-height: 1.1;
	color: var(--accent, #C8A97E);
}

.sai-cases-year-label span {
	color: var(--accent, #C8A97E);
}

.sai-cases-list {
	display: flex;
	flex-direction: column;
	gap: 14px;
}

.sai-case-card {
	display: grid;
	grid-template-columns: 240px minmax(0, 1fr);
	background: #fff;
	border: 1px solid var(--border, #E8E4DE);
	border-radius: 14px;
	overflow: hidden;
	scroll-margin-top: 132px;
}

.sai-case-card:target {
	border-color: var(--accent, #C8A97E);
	box-shadow: 0 0 0 3px rgba(200, 169, 126, 0.28);
}

.sai-case-photos {
	display: flex;
	min-height: 168px;
	height: 100%;
	background: #e6e8eb;
}

.sai-case-photos img {
	flex: 1 1 0;
	width: 0;
	height: 100%;
	min-height: 168px;
	object-fit: cover;
	display: block;
}

.sai-case-photos.is-empty {
	align-items: center;
	justify-content: center;
	color: #b0b6bd;
	font-size: 28px;
}

.sai-case-photos .fa-chalkboard-teacher {
	display: none;
}

.sai-case-photos.is-empty .fa-chalkboard-teacher {
	display: block;
}

.sai-case-extra {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}

.sai-case-extra:empty {
	display: none;
}

.sai-case-extra img {
	width: 96px;
	height: 68px;
	object-fit: cover;
	border-radius: 8px;
	background: #e6e8eb;
}

.sai-case-body {
	min-width: 0;
	padding: 18px 20px 16px;
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.sai-case-body h3 {
	margin: 0;
	font-size: 18px;
	font-weight: 700;
	line-height: 1.4;
	color: var(--primary, #2D2D2D);
}

.sai-case-desc {
	margin: 0;
	font-size: 14px;
	line-height: 1.6;
	color: var(--muted, #5F5F5F);
	white-space: pre-line;
}

.sai-case-meta {
	display: flex;
	flex-wrap: wrap;
	gap: 6px 14px;
	margin-top: 2px;
	font-size: 13px;
	color: #8b9096;
}

.sai-case-meta i {
	margin-right: 5px;
	color: #9aa1a8;
}

.sai-case-link {
	align-self: flex-start;
	margin-top: 2px;
	font-size: 13px;
	font-weight: 600;
	color: var(--accent, #C8A97E);
	text-decoration: none;
}

.sai-case-link:hover {
	color: #b8935f;
	text-decoration: underline;
}

@media (max-width: 800px) {
	.sai-cases-hero h1 {
		font-size: 26px;
	}

	.sai-cases-layout {
		grid-template-columns: 1fr;
		gap: 16px;
	}

	.sai-cases-year-nav {
		position: static;
		flex-direction: row;
		align-items: baseline;
		gap: 16px;
		margin: 0;
		padding: 0 2px 4px;
		border-left: none;
		overflow-x: auto;
		-webkit-overflow-scrolling: touch;
	}

	.sai-cases-year-nav a {
		flex: 0 0 auto;
		font-size: 18px;
	}

	.sai-cases-year-nav a::before {
		display: none;
	}

	.sai-cases-year-nav a.sai-cases-year-all {
		margin-bottom: 0;
	}

	.sai-cases-year-nav a.is-active {
		font-size: 22px;
	}

	.sai-case-card {
		grid-template-columns: 1fr;
	}

	.sai-case-photos,
	.sai-case-photos img {
		min-height: 180px;
		height: 180px;
	}
}