:root {
	--iss-navy: #123a63;
	--iss-blue: #1f5f99;
	--iss-pale: #eef5fb;
	--iss-line: #d8e1ea;
	--iss-text: #1d2733;
	--iss-muted: #5a6876;
	--iss-danger: #a52a2a;
	--iss-radius: 12px;
}

.iss-shop,
.iss-context-bar,
.iss-product-extra,
.iss-purchase-limit {
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
	color: var(--iss-text);
}

.iss-shop { max-width: 1160px; margin: 0 auto; padding: 28px 20px 64px; }
.iss-page-heading { margin: 0 0 28px; }
.iss-page-heading--compact { margin-top: 28px; }
.iss-page-heading h1,
.iss-school-heading h1 { color: var(--iss-navy); font-size: clamp(1.75rem, 4vw, 2.5rem); line-height: 1.35; margin: 4px 0 10px; }
.iss-page-heading p,
.iss-school-heading p { font-size: 1rem; line-height: 1.8; }
.iss-eyebrow { color: var(--iss-blue); font-size: .84rem !important; font-weight: 700; letter-spacing: .08em; margin: 0; }
.iss-school-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(245px, 1fr)); gap: 20px; }
.iss-product-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.iss-school-card,
.iss-product-card { background: #fff; border: 1px solid var(--iss-line); border-radius: var(--iss-radius); box-shadow: 0 5px 18px rgba(18,58,99,.07); overflow: hidden; }
.iss-school-card { display: flex; min-height: 175px; padding: 28px; color: var(--iss-navy); flex-direction: column; justify-content: center; text-decoration: none; transition: border-color .18s, transform .18s; }
.iss-school-card:hover,
.iss-school-card:focus-visible { border-color: var(--iss-blue); transform: translateY(-2px); }
.iss-school-banner { width: 100%; height: 120px; object-fit: cover; border-radius: 8px; margin-bottom: 18px; }
.iss-school-name { font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: 1.55rem; font-weight: 700; }
.iss-card-action { color: var(--iss-blue); font-size: .95rem; margin-top: 18px; }
.iss-breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; color: var(--iss-muted); font-size: .9rem; margin: 0 0 24px; }
.iss-breadcrumbs a { color: var(--iss-blue); }
.iss-school-heading { background: var(--iss-pale); border-left: 5px solid var(--iss-blue); padding: 24px; border-radius: 0 var(--iss-radius) var(--iss-radius) 0; }
.iss-school-year { color: var(--iss-muted); margin: 0; }
.iss-student-name-note,
.iss-context-warning { color: var(--iss-danger); font-weight: 700; }
.iss-notice { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--iss-line); }
.iss-selection { margin-top: 32px; }
.iss-selection h2,
.iss-class-group h2 { color: var(--iss-navy); font-size: 1.35rem; }
.iss-button-grid,
.iss-class-buttons { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.iss-choice-button,
.iss-detail-button { display: flex; min-height: 52px; align-items: center; justify-content: center; background: var(--iss-navy); border: 2px solid var(--iss-navy); border-radius: 9px; color: #fff !important; font-size: 1rem; font-weight: 700; padding: 12px 20px; text-align: center; text-decoration: none !important; }
.iss-choice-button:hover,
.iss-choice-button:focus-visible,
.iss-detail-button:hover,
.iss-detail-button:focus-visible { background: #fff; color: var(--iss-navy) !important; }
.iss-class-group { border: 1px solid var(--iss-line); border-radius: var(--iss-radius); padding: 24px; margin: 0 0 22px; }
.iss-class-group:nth-of-type(even) { background: #f7f9fb; }
.iss-choice-button--sub { background: #fff; color: var(--iss-navy) !important; }
.iss-choice-button--sub:hover,
.iss-choice-button--sub:focus-visible { background: var(--iss-navy); color: #fff !important; }
.iss-context-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; background: var(--iss-pale); border: 1px solid #c9dced; border-radius: 9px; padding: 12px 16px; margin: 0 0 24px; font-size: 1rem; }
.iss-context-bar > span:not(.iss-context-warning) { background: #fff; border: 1px solid var(--iss-line); border-radius: 999px; padding: 5px 11px; }
.iss-context-warning { margin-left: auto; }
.iss-product-card { display: flex; }
.iss-catalog-grade { border-top: 3px solid var(--iss-navy); margin: 34px 0 48px; padding-top: 18px; }
.iss-catalog-grade > h2 { color: var(--iss-navy); font-size: 1.55rem; }
.iss-catalog-classification { color: var(--iss-blue); font-size: 1.08rem; margin: 26px 0 10px; }
.iss-product-card__body { display: grid; flex: 1; grid-template-columns: minmax(0, 1fr) minmax(140px, auto); grid-template-rows: auto auto auto; align-items: center; column-gap: 24px; row-gap: 8px; padding: 18px 20px; }
.iss-fulfillment-badge { grid-column: 1 / -1; grid-row: 1; justify-self: start; background: var(--iss-pale); border-radius: 999px; color: var(--iss-navy); font-size: .78rem; font-weight: 700; margin: 0; padding: 4px 10px; }
.iss-product-card h2,
.iss-product-card h3 { grid-column: 1; grid-row: 2; font-size: 1.15rem; line-height: 1.5; margin: 0; }
.iss-product-card h2 a,
.iss-product-card h3 a { color: var(--iss-navy); text-decoration: none; }
.iss-product-summary { grid-column: 1; grid-row: 3; color: var(--iss-muted); font-size: .95rem; }
.iss-product-summary p { margin: 0; }
.iss-product-price { grid-column: 2; grid-row: 2; color: var(--iss-text); font-size: 1.15rem; font-weight: 700; margin: 0; text-align: right; white-space: nowrap; }
.iss-detail-button { grid-column: 2; grid-row: 3; min-height: 44px; min-width: 140px; padding: 8px 16px; width: auto; }
.iss-product-card .iss-unavailable { grid-column: 1; margin: 0; }
.iss-unavailable { color: var(--iss-danger); font-weight: 700; }
.iss-empty { background: #f6f7f8; border: 1px solid var(--iss-line); border-radius: var(--iss-radius); padding: 28px; text-align: center; }
.iss-product-extra { background: #f7f9fb; border: 1px solid var(--iss-line); border-radius: 9px; padding: 16px 18px; margin: 18px 0; }
.iss-product-extra h2 { color: var(--iss-navy); font-size: 1rem; margin: 0 0 8px; }
.iss-product-extra ul { margin: 0 0 0 1.2em; }
.iss-purchase-limit { font-weight: 700; }
.iss-pagination { margin-top: 28px; text-align: center; }
.iss-pagination .page-numbers { display: inline-flex; min-width: 44px; min-height: 44px; align-items: center; justify-content: center; border: 1px solid var(--iss-line); margin: 3px; }
.iss-progress { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; list-style: none; margin: 0 0 28px; padding: 0; }
.iss-progress li { color: var(--iss-muted); font-size: .88rem; text-align: center; }
.iss-progress li span { display: flex; width: 34px; height: 34px; align-items: center; justify-content: center; background: #edf0f3; border-radius: 50%; color: var(--iss-muted); font-weight: 700; margin: 0 auto 6px; }
.iss-progress li.is-active { color: var(--iss-navy); font-weight: 700; }
.iss-progress li.is-active span { background: var(--iss-navy); color: #fff; }
.iss-progress li.is-complete span { background: #18864b; color: #fff; }
.iss-checkout-policy { background: #f7f9fb; border: 1px solid var(--iss-line); border-radius: 9px; padding: 16px; margin: 18px 0; }
#iss-confirmation-panel { background: var(--iss-pale); border: 2px solid var(--iss-blue); border-radius: 10px; padding: 20px; margin: 18px 0; }
#iss-confirmation-panel dl { display: grid; grid-template-columns: minmax(120px, 35%) 1fr; border-top: 1px solid var(--iss-line); margin: 14px 0; }
#iss-confirmation-panel dt,
#iss-confirmation-panel dd { border-bottom: 1px solid var(--iss-line); margin: 0; padding: 10px; }
#iss-confirmation-panel dt { font-weight: 700; }
.iss-legal-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; border-top: 1px solid var(--iss-line); color: var(--iss-muted); font-size: .88rem; margin-top: 36px; padding: 20px; }
.iss-legal-links a { color: var(--iss-muted); }

@media (max-width: 640px) {
	.iss-shop { padding: 20px 14px 48px; }
	.iss-school-grid { grid-template-columns: 1fr; }
	.iss-class-group { padding: 18px 14px; }
	.iss-context-warning { width: 100%; margin-left: 0; }
	.iss-page-heading--compact { margin-top: 22px; }
	.iss-page-heading { margin-bottom: 20px; }
	.iss-product-card__body { grid-template-columns: minmax(0, 1fr) auto; grid-template-rows: auto auto auto auto; column-gap: 12px; row-gap: 10px; padding: 15px 16px; }
	.iss-product-card h2,
	.iss-product-card h3 { grid-column: 1 / -1; grid-row: 2; font-size: 1.05rem; line-height: 1.45; }
	.iss-product-summary { display: -webkit-box; grid-column: 1 / -1; grid-row: 3; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; line-clamp: 2; }
	.iss-product-price { grid-column: 1; grid-row: 4; text-align: left; }
	.iss-detail-button { grid-column: 2; grid-row: 4; min-height: 42px; min-width: 112px; padding: 7px 13px; }
	.iss-product-card .iss-unavailable { grid-column: 1 / -1; }
}