/* MATHPEDIA 授業ページ */
.mpc-label {
	display: inline-block;
	font-size: 12px;
	letter-spacing: .08em;
	color: #1f4e8c;
	font-weight: 700;
	margin-bottom: 6px;
}
.mpc-badge {
	display: inline-block;
	font-size: 12px;
	letter-spacing: .08em;
	color: #1f4e8c;
	background: #e7eef8;
	border: 1px solid #1f4e8c;
	border-radius: 99px;
	padding: 2px 12px;
	margin: 0 0 14px;
}
.mpc-summary {
	border-left: 3px solid #1f4e8c;
	background: #f3f6fb;
	padding: 14px 18px;
	margin: 0 0 24px;
	border-radius: 0 4px 4px 0;
}
.mpc-summary p { margin: 0; font-weight: 600; }

.mpc-video { margin: 0 0 28px; }
.mpc-video-frame { position: relative; }
.mpc-video-frame iframe { max-width: 100%; }

.mpc-h {
	font-size: 20px;
	margin: 40px 0 12px;
	padding-bottom: 8px;
	border-bottom: 2px solid #1f4e8c;
}
.mpc-note { font-size: 14px; color: #555; margin: 0 0 16px; }

.mpc-qa {
	border: 1px solid #dcdfe4;
	border-radius: 6px;
	padding: 14px 18px;
	margin-bottom: 12px;
	background: #fff;
}
.mpc-q { margin: 0; font-weight: 600; }
.mpc-num {
	display: inline-block;
	font-size: 12px;
	color: #fff;
	background: #1f4e8c;
	border-radius: 3px;
	padding: 1px 7px;
	margin-right: 10px;
	vertical-align: 2px;
}
.mpc-a { margin-top: 10px; }
.mpc-a summary {
	cursor: pointer;
	font-size: 14px;
	color: #1f4e8c;
	font-weight: 600;
}
.mpc-a > div {
	margin-top: 10px;
	padding: 12px 14px;
	background: #f6f7f9;
	border-radius: 4px;
}

.mpc-related ul { list-style: none; padding: 0; margin: 0; }
.mpc-related li { margin-bottom: 8px; }
.mpc-related li a { text-decoration: none; font-weight: 600; }
.mpc-related li a::before { content: "→ "; color: #1f4e8c; }


/* 入口ページ（数学を学ぶ／受験数学を学ぶ） */
.mpc-index .mpc-idx { margin-bottom: 44px; }
.mpc-index .mpc-terms,
.mpc-index .mpc-cards { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.mpc-index .mpc-terms { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); }
.mpc-index .mpc-cards { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.mpc-index li a {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 10px;
	padding: 14px 16px;
	border: 1px solid #dcdfe4;
	border-radius: 6px;
	background: #fff;
	text-decoration: none;
	color: inherit;
	transition: border-color .15s, background .15s;
}
.mpc-index li a:hover { border-color: #1f4e8c; background: #f3f6fb; }
.mpc-index .mpc-term-n { font-weight: 700; }
.mpc-index .mpc-term-c {
	flex: 0 0 auto;
	font-size: 12px;
	color: #1f4e8c;
	background: #e7eef8;
	border-radius: 99px;
	padding: 1px 10px;
	font-variant-numeric: tabular-nums;
}
.mpc-index .mpc-cards li a { flex-direction: column; align-items: flex-start; gap: 6px; }
.mpc-index .mpc-card-t { font-weight: 700; }
.mpc-index .mpc-card-s { font-size: 13px; color: #555; line-height: 1.7; }


/* 受験数学ページ */
.mpc-meta-line { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; margin: 0 0 20px; font-size: 13px; }
.mpc-level { color: #a33c2c; letter-spacing: .1em; }
.mpc-source { color: #555; }
.mpc-translate {
	border-left: 3px solid #a33c2c;
	background: #f9f1ef;
	padding: 14px 18px;
	margin: 28px 0;
	border-radius: 0 4px 4px 0;
}
.mpc-translate .mpc-label { color: #a33c2c; }
.mpc-translate p:last-child { margin-bottom: 0; }
.mpc-solution { margin: 28px 0; }
.mpc-solution summary {
	cursor: pointer;
	font-weight: 700;
	color: #a33c2c;
	padding: 12px 18px;
	border: 1px solid #a33c2c;
	border-radius: 6px;
	display: inline-block;
}
.mpc-solution > details > div {
	margin-top: 14px;
	padding: 16px 18px;
	background: #f6f7f9;
	border-radius: 6px;
}
.mpc-solution > details > div p:last-child { margin-bottom: 0; }


/* 思考カード */
.mpc-cards { margin: 40px 0; }
.mpc-card-list, .mpc-card-out { list-style: none; padding: 0; margin: 0 0 16px; }
.mpc-card-out { min-height: 56px; border: 1px dashed #c9ced6; border-radius: 6px; padding: 8px; background: #fafbfc; }
.mpc-out-label { font-size: 13px; color: #666; margin: 0 0 6px; }
.mpc-card {
	display: flex;
	align-items: flex-start;
	gap: 10px;
	padding: 12px 14px;
	margin-bottom: 8px;
	background: #fff;
	border: 1px solid #dcdfe4;
	border-radius: 6px;
	line-height: 1.75;
}
.mpc-card.mpc-dragging { opacity: .6; border-color: #a33c2c; }
.mpc-grip {
	flex: 0 0 auto;
	cursor: grab;
	color: #98a0ac;
	font-size: 18px;
	line-height: 1.4;
	touch-action: none;
	user-select: none;
	padding: 0 2px;
}
.mpc-card-body { flex: 1 1 auto; min-width: 0; }
.mpc-card-note { display: block; margin-top: 6px; font-size: 13px; color: #a33c2c; }
.mpc-cards:not(.mpc-graded) .mpc-card-note { display: none; }
.mpc-card-ops { flex: 0 0 auto; display: flex; gap: 4px; align-items: center; }
.mpc-card-ops button {
	font-size: 13px;
	line-height: 1;
	padding: 8px 10px;
	min-width: 36px;
	border: 1px solid #c9ced6;
	background: #f6f7f9;
	border-radius: 4px;
	cursor: pointer;
	color: #333;
}
.mpc-card-ops button:hover { border-color: #a33c2c; color: #a33c2c; }
.mpc-card-actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0 0; }
.mpc-card-actions button {
	font-weight: 700;
	padding: 12px 20px;
	border-radius: 6px;
	cursor: pointer;
	border: 1px solid #a33c2c;
	background: #a33c2c;
	color: #fff;
}
.mpc-card-actions .mpc-card-reveal { background: #fff; color: #a33c2c; }
.mpc-card-result { margin: 14px 0 0; font-weight: 700; }
.mpc-card-result.mpc-ok { color: #1f7a4d; }
.mpc-card-result.mpc-ng { color: #a33c2c; }
@media (max-width: 600px) {
	.mpc-card { flex-wrap: wrap; }
	.mpc-card-ops { width: 100%; justify-content: flex-end; }
}
.mpc-card-out .mpc-up, .mpc-card-out .mpc-down { display: none; }

/* 復習 */
.mpc-review { margin: 40px 0; padding: 20px 22px; background: #f3f6fb; border-radius: 8px; }
.mpc-review .mpc-h { margin-top: 0; }
.mpc-review-status { font-weight: 700; margin: 0 0 14px; }
.mpc-review-btns { display: flex; flex-wrap: wrap; gap: 10px; margin: 0; }
.mpc-review-btns button {
	flex: 1 1 auto;
	min-width: 120px;
	font-weight: 700;
	padding: 14px 16px;
	border-radius: 6px;
	cursor: pointer;
	border: 1px solid #1f4e8c;
	background: #fff;
	color: #1f4e8c;
}
.mpc-review-btns button:hover { background: #1f4e8c; color: #fff; }
.mpc-review-next { margin: 14px 0 0; font-weight: 700; color: #1f7a4d; }
.mpc-review-foot { margin: 14px 0 0; font-size: 12px; color: #666; }
.mpc-review-foot .mpc-link {
	background: none;
	border: 0;
	padding: 0 0 0 6px;
	color: #666;
	text-decoration: underline;
	cursor: pointer;
	font-size: 12px;
}
.mpc-review-list .mpc-note { margin-bottom: 24px; }

/* ホームの入口ボタン */
.mpc-home {
	display: grid;
	grid-template-columns: 1fr;
	gap: 16px;
	margin: 32px auto 40px;
	max-width: 980px;
}
@media (min-width: 820px) {
	.mpc-home { grid-template-columns: repeat(3, 1fr); gap: 20px; }
}
.mpc-home-btn {
	display: flex;
	flex-direction: column;
	justify-content: center;
	gap: 10px;
	min-height: 150px;
	padding: 28px 24px;
	border-radius: 10px;
	text-align: center;
	text-decoration: none;
	border: 2px solid;
	background: #fff;
	transition: transform .15s, box-shadow .15s, background .15s, color .15s;
}
.mpc-home-btn:hover, .mpc-home-btn:focus-visible {
	transform: translateY(-3px);
	box-shadow: 0 8px 22px rgba(20, 26, 38, .13);
	text-decoration: none;
}
.mpc-home-t { font-size: 22px; font-weight: 700; line-height: 1.4; }
.mpc-home-s { font-size: 13.5px; line-height: 1.8; color: #4c5769; }

.mpc-home-a { border-color: #1f4e8c; }
.mpc-home-a .mpc-home-t { color: #1f4e8c; }
.mpc-home-a:hover { background: #1f4e8c; }
.mpc-home-a:hover .mpc-home-t, .mpc-home-a:hover .mpc-home-s { color: #fff; }

.mpc-home-b { border-color: #a33c2c; }
.mpc-home-b .mpc-home-t { color: #a33c2c; }
.mpc-home-b:hover { background: #a33c2c; }
.mpc-home-b:hover .mpc-home-t, .mpc-home-b:hover .mpc-home-s { color: #fff; }

.mpc-home-c { border-color: #1f7a4d; }
.mpc-home-c .mpc-home-t { color: #1f7a4d; }
.mpc-home-c:hover { background: #1f7a4d; }
.mpc-home-c:hover .mpc-home-t, .mpc-home-c:hover .mpc-home-s { color: #fff; }

/* ホームだけ1カラムにして、入口ボタンを中央に大きく置く */
body.home #side { display: none; }
body.home #contentInner { width: 100%; max-width: 100%; float: none; margin: 0 auto; }
body.home #content { display: block; }
body.home .sns { display: none; }
body.home .mpc-home { max-width: 1000px; margin: 8px auto 48px; }
body.home .mpc-home-btn { min-height: 190px; padding: 34px 26px; }
body.home .mpc-home-t { font-size: 26px; }
body.home .mpc-home-s { font-size: 14.5px; }
@media (max-width: 819px) {
	body.home .mpc-home-btn { min-height: 0; padding: 24px 20px; }
	body.home .mpc-home-t { font-size: 21px; }
}
body.home main { width: 100%; max-width: 100%; box-sizing: border-box; }

/* テーマの箇条書き記号を消して、ボタンとして見せる */
.mpc-index ul,
.mpc-related ul,
.mpc-card-list,
.mpc-review-list ul {
	list-style: none !important;
	padding-left: 0 !important;
	margin-left: 0 !important;
}
.mpc-card-out { list-style: none !important; margin-left: 0 !important; }
.mpc-index li,
.mpc-related li,
.mpc-card-list > li,
.mpc-card-out > li,
.mpc-review-list li {
	list-style: none !important;
	list-style-type: none !important;
	background-image: none !important;
}
.mpc-index li::marker,
.mpc-related li::marker,
.mpc-card-list > li::marker,
.mpc-card-out > li::marker,
.mpc-review-list li::marker { content: "" !important; }
.mpc-index .mpc-terms li a { justify-content: center; text-align: center; }