/* モデルコース。観光・自然コンテンツなので緑を差し色にする(タグ・タイムライン・CTA)。 */
.featured-courses, .course-catalog, .course-detail { width: var(--wrap); margin-inline: auto; }
.featured-courses { margin-bottom: 4rem; }
.course-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .8rem; }
.course-card { padding: 1.2rem; }
.course-card__visual { margin: 0 0 .8rem; }
.course-card__visual > a { display: block; overflow: hidden; border-radius: var(--r-m); }
.course-card__visual img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; transition: transform .25s ease; }
.course-card__visual figcaption { margin-top: .3rem; color: var(--ink-2); font-size: .65rem; }
.course-card__visual a:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; }
@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .course-card__visual > a:hover img { transform: scale(1.035); }
}
@media (prefers-reduced-motion: reduce) { .course-card__visual img { transition: none; } }
.course-card > header, .course-card > footer { display: flex; gap: 1rem; align-items: center; justify-content: space-between; }
.course-card > header > span { color: var(--green-100); font-size: 1.9rem; font-weight: 800; line-height: 1; letter-spacing: -.04em; }
.course-card h2 { margin: .8rem 0 .5rem; font-size: var(--fs-3); }
.course-card h2 a:hover { color: var(--green); }
.course-card > p { color: var(--ink-2); font-size: var(--fs-s); line-height: 1.7; }
.course-theme-tags { display: flex; flex-wrap: wrap; gap: .3rem; margin-top: .6rem; }
.course-theme-tags span { padding: .22rem .6rem; color: var(--green-d); border-radius: var(--r-p); background: var(--green-50); font-size: .66rem; font-weight: 700; }
.course-card-facts { display: grid; grid-template-columns: repeat(3, 1fr); margin: 1rem 0 0; border-block: 1px solid var(--line); }
.course-card-facts div { display: grid; gap: .1rem; padding: .7rem .3rem; }
.course-card-facts dt { color: var(--ink-3); font-size: .62rem; }
.course-card-facts dd { margin: 0; font-size: var(--fs-s); font-weight: 700; }
.course-card-stops { display: grid; gap: .35rem; padding: 0; margin: .9rem 0; list-style: none; counter-reset: stops; }
.course-card-stops li { display: grid; grid-template-columns: 1.4rem 1fr; gap: .4rem; color: var(--ink-2); font-size: var(--fs-xs); counter-increment: stops; }
.course-card-stops li::before { color: var(--green); font-size: .62rem; font-weight: 700; content: counter(stops, decimal-leading-zero); }
.course-card > footer { margin-top: auto; padding-top: .8rem; border-top: 1px solid var(--line); font-size: var(--fs-xs); }
.course-card > footer span { color: var(--ink-3); }
.course-card > footer a { color: var(--green); font-weight: 700; }
.course-card > footer a:hover { text-decoration: underline; text-underline-offset: .2em; }

/* 一覧: 写真ヒーロー(角丸カード) + テーマ切替 */
.course-index-hero { position: relative; display: grid; align-content: end; width: var(--wrap); min-height: clamp(15rem, 32svh, 20rem); margin: var(--page-top) auto 1rem; overflow: hidden; color: #fff; border-radius: var(--r-l); background: var(--ink); isolation: isolate; }
main:has(> .breadcrumbs) .course-index-hero { margin-top: .6rem; }
.course-index-hero > img, .course-hero-shade { position: absolute; inset: 0; width: 100%; height: 100%; }
.course-index-hero > img { z-index: -2; object-fit: cover; }
.course-hero-shade { z-index: -1; background: linear-gradient(180deg, rgb(10 20 35 / 5%), rgb(10 20 35 / 70%)); }
.course-index-copy { padding: clamp(1.4rem, 4vw, 2.5rem); }
.course-index-copy h1 { max-width: none; margin: .3rem 0 .5rem; line-height: 1.16; text-shadow: 0 2px 16px rgb(0 0 0 / 30%); }
.course-index-copy > p:last-child { max-width: 42rem; font-size: var(--fs-s); line-height: 1.8; text-shadow: 0 1px 10px rgb(0 0 0 / 30%); }
.course-theme-nav { display: flex; gap: .4rem; width: var(--wrap); margin: 0 auto 2.5rem; overflow-x: auto; scrollbar-width: none; }
.course-theme-nav::-webkit-scrollbar { display: none; }
.course-theme-nav a { flex: 0 0 auto; padding: .45rem .9rem; color: var(--ink-2); border: 1px solid var(--line); border-radius: var(--r-p); background: var(--paper); font-size: var(--fs-xs); font-weight: 700; transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast); }
.course-theme-nav a:hover { color: var(--green); border-color: var(--green); }
.course-theme-nav a.active { color: var(--control-active-ink); border-color: var(--control-active-border); background: var(--control-active-bg); }
.course-catalog { margin-bottom: 4rem; }

/* 詳細 */
.course-detail { padding-top: var(--page-top); }
.course-detail-hero { position: relative; display: grid; align-content: end; min-height: clamp(20rem, 50svh, 30rem); overflow: hidden; color: #fff; border-radius: var(--r-l); background: var(--ink); isolation: isolate; }
.course-detail-hero > img { position: absolute; z-index: -2; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.course-detail-copy { padding: clamp(1.4rem, 4vw, 2.5rem); }
.course-detail-copy .eyebrow { color: #dbeafe; }
.course-detail-copy h1 { max-width: 24ch; margin: .3rem 0 .5rem; text-shadow: 0 2px 16px rgb(0 0 0 / 30%); }
.course-detail-copy > p:not(.eyebrow) { max-width: 42rem; font-size: var(--fs-s); line-height: 1.8; text-shadow: 0 1px 10px rgb(0 0 0 / 30%); }
.course-detail-copy .course-theme-tags span { color: var(--green-d); background: rgb(255 255 255 / 92%); }
.course-summary { display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: center; padding: .6rem 1.2rem; margin: 1rem 0 2.5rem; border: 1px solid var(--line); border-radius: var(--r-l); background: var(--paper); box-shadow: var(--sh-1); }
.course-summary dl { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; }
.course-summary dl div { display: grid; gap: .1rem; padding: .5rem 1rem .5rem 0; border-right: 1px solid var(--line); }
.course-summary dl div + div { padding-left: 1rem; }
.course-summary dl div:last-child { border-right: 0; }
.course-summary dt { color: var(--ink-3); font-size: .64rem; }
.course-summary dd { margin: 0; font-weight: 800; }
.course-practical-note { display: grid; grid-template-columns: minmax(160px, .4fr) 1fr; gap: .3rem 2rem; padding: 1.4rem; margin-bottom: 2.5rem; border: 1px solid var(--green-100); border-radius: var(--r-l); background: var(--green-50); }
.course-practical-note h2 { grid-column: 1; grid-row: 1 / 9; font-size: var(--fs-3); }
.course-practical-note > p { grid-column: 2; }
.course-practical-note p:not(.eyebrow) { color: var(--ink-2); font-size: var(--fs-s); line-height: 1.8; }
.course-route { margin-bottom: 3.5rem; }
.course-timeline { display: grid; padding: 0; margin: 0; list-style: none; }
.course-timeline > li { position: relative; display: grid; grid-template-columns: 8rem 1fr; gap: 1.2rem; padding-bottom: 1rem; }
.course-timeline > li::before { position: absolute; top: 0; bottom: 0; left: calc(4rem - 1px); width: 2px; content: ""; background: var(--green-100); }
.course-timeline > li:last-child::before { bottom: 50%; }
.course-transfer { position: relative; z-index: 1; display: grid; align-self: start; justify-items: center; gap: .1rem; padding: .7rem .5rem; color: var(--green-d); border: 1px solid var(--green-100); border-radius: var(--r-m); background: var(--paper); text-align: center; }
.course-transfer span, .course-transfer small { color: var(--ink-3); font-size: .6rem; }
.course-transfer strong { font-size: var(--fs-s); }
.course-timeline > li:not(:has(.course-transfer))::after { position: relative; z-index: 1; grid-row: 1; grid-column: 1; justify-self: center; width: 12px; height: 12px; margin-top: 1.6rem; border: 3px solid #fff; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 1px var(--green-100); content: ""; }
.course-timeline article { position: relative; z-index: 1; grid-column: 2; padding: clamp(1.1rem, 2.5vw, 1.6rem); border: 1px solid var(--line); border-radius: var(--r-l); background: var(--paper); }
.course-timeline article > header { display: flex; gap: .9rem; align-items: center; }
.course-stop-number { color: var(--green); font-size: 1.6rem; font-weight: 800; letter-spacing: -.04em; }
.course-timeline article > header p { color: var(--ink-3); font-size: .66rem; font-weight: 700; }
.course-timeline article time { font-size: var(--fs-s); font-weight: 700; }
.course-timeline article h2 { margin: .7rem 0 .4rem; font-size: var(--fs-2); }
.course-timeline article h2 a:hover { color: var(--green); }
.course-stop-headline { color: var(--green-d); font-weight: 700; }
.course-stop-note { margin-top: .4rem; color: var(--ink-2); font-size: var(--fs-s); line-height: 1.8; }
.course-timeline article dl { margin-top: .9rem; }
.course-timeline article dl div { display: grid; grid-template-columns: 6rem 1fr; padding: .55rem 0; border-top: 1px solid var(--line); font-size: var(--fs-xs); }
.course-timeline article dt { color: var(--ink-3); }
.course-timeline article dd { margin: 0; }
.course-timeline article footer { display: flex; flex-wrap: wrap; gap: .5rem .9rem; margin-top: 1rem; font-size: var(--fs-xs); font-weight: 700; }
.course-timeline article footer a { color: var(--green); }
.course-timeline article footer a:hover { text-decoration: underline; text-underline-offset: .2em; }
.course-map-section { margin-bottom: 3rem; }
.course-map { min-height: 500px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--r-l); }
.course-detail-footer { display: flex; gap: 1rem; align-items: center; justify-content: space-between; padding-block: 1.5rem 4rem; border-top: 1px solid var(--line); color: var(--ink-3); font-size: var(--fs-xs); }

@media (max-width: 900px) {
  /* SP。段はこの1本だけ */
  .course-index-hero { min-height: 14rem; }
  .course-index-copy { padding: 1rem; }
  .course-index-copy h1 { font-size: clamp(1.4rem, 6vw, 1.7rem); line-height: 1.18; }
  .course-index-copy > p:last-child { font-size: .7rem; line-height: 1.6; }
  .course-card-grid { grid-template-columns: 1fr; }
  .course-summary { grid-template-columns: 1fr; padding: .6rem 1rem; }
  .course-summary dl { grid-template-columns: 1fr 1fr; }
  .course-summary dl div:nth-child(even) { border-right: 0; }
  .course-summary dl div:nth-child(odd) { padding-left: 0; }
  .course-summary dl div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .course-practical-note { grid-template-columns: 1fr; gap: .3rem; }
  .course-practical-note h2 { grid-row: auto; }
  .course-practical-note > p { grid-column: 1; }
  .course-timeline > li { grid-template-columns: 3.4rem 1fr; gap: .7rem; }
  .course-timeline > li::before { left: 1.65rem; }
  .course-transfer { padding: .5rem .2rem; }
  .course-timeline article dl div { grid-template-columns: 5.2rem 1fr; }
  .course-map { min-height: 400px; }
  .course-detail-footer { align-items: start; flex-direction: column; }
}
.course-photo-credit { margin: .5rem 0; color: var(--ink-3); font-size: .7rem; }