:root {
  --rc-navy: #12314a;
  --rc-navy-deep: #0b2539;
  --rc-teal: #2f8f91;
  --rc-ink: #1c2b36;
  --rc-muted: #687681;
  --rc-line: #dce3e6;
  --rc-bg: #f5f7f6;
  --rc-white: #fff;
}

.rcases-main,
.rcases-home {
  color: var(--rc-ink);
  font-family: "Noto Sans JP", "Yu Gothic", YuGothic, sans-serif;
}

.rcases-wrap {
  width: min(1180px, calc(100% - 48px));
  margin-inline: auto;
}

.rcases-eyebrow {
  margin: 0 0 12px;
  color: var(--rc-teal);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .2em;
}

.rcases-hero {
  padding-top: 126px;
  background: var(--rc-bg);
}

.rcases-hero__inner {
  display: grid;
  grid-template-columns: minmax(280px, .75fr) minmax(0, 1.55fr);
  min-height: 490px;
  padding: 0;
  overflow: hidden;
  background: var(--rc-white);
}

.rcases-hero__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 60px;
  color: var(--rc-white);
  background: var(--rc-navy);
}

.rcases-hero__copy .rcases-eyebrow { color: #8fd2d0; }
.rcases-hero h1 { margin: 0; font-family: serif; font-size: clamp(40px, 5vw, 68px); font-weight: 500; letter-spacing: .1em; }
.rcases-hero__lead { margin: 44px 0 0; font-family: serif; font-size: clamp(20px, 2.2vw, 30px); line-height: 1.8; letter-spacing: .08em; }
.rcases-hero__visual { min-height: 490px; }
.rcases-hero__visual img { width: 100%; height: 100%; object-fit: cover; }

.rcases-filter {
  padding: 34px 0;
  border-bottom: 1px solid var(--rc-line);
  background: var(--rc-white);
}

.rcases-filter > .rcases-wrap { display: grid; grid-template-columns: .8fr 1.3fr; gap: 42px; }
.rcases-filter__group + .rcases-filter__group { padding-left: 42px; border-left: 1px solid var(--rc-line); }
.rcases-filter__group p { margin: 0 0 14px; font-size: 14px; font-weight: 700; }
.rcases-filter__buttons { display: flex; flex-wrap: wrap; gap: 10px; }
.rcases-filter button { min-width: 104px; padding: 11px 18px; border: 1px solid #cbd5da; border-radius: 4px; color: var(--rc-ink); background: var(--rc-white); cursor: pointer; transition: .2s ease; }
.rcases-filter button:hover,
.rcases-filter button:focus-visible,
.rcases-filter button.is-active { border-color: var(--rc-navy); color: var(--rc-white); background: var(--rc-navy); }

.rcases-list-section { padding: 76px 0 100px; background: var(--rc-bg); }
.rcases-section-heading { display: flex; align-items: baseline; gap: 18px; margin-bottom: 30px; }
.rcases-section-heading h2 { margin: 0; font-family: serif; font-size: 32px; font-weight: 500; letter-spacing: .08em; }
.rcases-section-heading p { margin: 0; color: var(--rc-muted); }
.rcases-section-heading p span { margin-right: 4px; color: var(--rc-navy); font-size: 22px; font-weight: 700; }
.rcases-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.rcase-card { min-width: 0; background: var(--rc-white); box-shadow: 0 10px 30px rgba(20, 49, 73, .08); transition: transform .25s ease, box-shadow .25s ease; }
.rcase-card:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(20, 49, 73, .14); }
.rcase-card[hidden] { display: none; }
.rcase-card > a { display: block; height: 100%; color: inherit; text-decoration: none; }
.rcase-card__images { display: grid; grid-template-columns: 1fr 1fr; aspect-ratio: 1.5; overflow: hidden; }
.rcase-card__images figure,
.rcase-detail__pair figure { position: relative; margin: 0; overflow: hidden; background: #e8ecec; }
.rcase-card__images img,
.rcase-detail__pair img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.rcase-card:hover .rcase-card__images img { transform: scale(1.025); }
.rcase-card__images figure > span,
.rcase-detail__pair figure > span { position: absolute; z-index: 1; top: 0; left: 0; padding: 6px 11px; color: #fff; background: rgba(11, 37, 57, .8); font-size: 11px; letter-spacing: .08em; }
.rcase-card__images figure:last-child > span,
.rcase-detail__pair figure:last-child > span { background: rgba(47, 143, 145, .9); }
.rcase-card__body { display: flex; flex-direction: column; min-height: 270px; padding: 24px; }
.rcase-card__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.rcase-card__tags span { display: inline-block; padding: 5px 9px; border-radius: 2px; color: #46606f; background: #eef2f2; font-size: 11px; }
.rcase-card h3 { margin: 15px 0 18px; color: var(--rc-navy-deep); font-size: 20px; line-height: 1.55; }
.rcase-card__facts { display: flex; flex-wrap: wrap; gap: 12px 24px; margin: auto 0 20px; }
.rcase-card__facts div { display: flex; align-items: baseline; gap: 9px; }
.rcase-card__facts dt { color: var(--rc-muted); font-size: 11px; }
.rcase-card__facts dd { margin: 0; color: var(--rc-navy); font-size: 17px; font-weight: 700; }
.rcase-card__more { display: flex; justify-content: space-between; padding-top: 16px; border-top: 1px solid var(--rc-line); color: var(--rc-navy); font-size: 13px; font-weight: 700; }
.rcases-empty { padding: 50px 20px; text-align: center; background: #fff; }

.rcases-cta { padding: 62px 0; color: var(--rc-white); background: linear-gradient(120deg, var(--rc-navy-deep), var(--rc-navy)); }
.rcases-cta__inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.rcases-cta h2 { margin: 0; font-family: serif; font-size: clamp(24px, 3vw, 38px); font-weight: 500; line-height: 1.6; letter-spacing: .08em; }
.rcases-cta a { display: inline-flex; align-items: center; justify-content: space-between; gap: 35px; min-width: 330px; padding: 20px 28px; border-radius: 999px; color: #fff; background: var(--rc-teal); text-decoration: none; font-weight: 700; transition: .2s ease; }
.rcases-cta a:hover { filter: brightness(1.08); transform: translateY(-2px); }

.rcase-breadcrumb { display: flex; flex-wrap: wrap; gap: 9px; padding-top: 150px; padding-bottom: 28px; color: var(--rc-muted); font-size: 12px; }
.rcase-breadcrumb a { color: var(--rc-navy); }
.rcase-detail__header { padding: 50px 0 44px; background: var(--rc-bg); }
.rcase-detail__header h1 { max-width: 900px; margin: 20px 0 30px; color: var(--rc-navy-deep); font-family: serif; font-size: clamp(34px, 5vw, 58px); font-weight: 500; line-height: 1.45; letter-spacing: .05em; }
.rcase-detail__facts { display: flex; flex-wrap: wrap; gap: 20px 50px; margin: 0; }
.rcase-detail__facts div { min-width: 150px; }
.rcase-detail__facts dt { margin-bottom: 7px; color: var(--rc-muted); font-size: 12px; }
.rcase-detail__facts dd { margin: 0; color: var(--rc-navy); font-size: 19px; font-weight: 700; line-height: 1.5; }
.rcase-detail__price-note { margin: 20px 0 0; color: var(--rc-muted); font-size: 12px; }
.rcase-detail__gallery { display: grid; gap: 28px; padding-top: 64px; padding-bottom: 76px; }
.rcase-detail__pair { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.rcase-detail__pair figure { aspect-ratio: 4 / 3; }
.rcase-detail__content { display: grid; gap: 34px; padding-bottom: 76px; }
.rcase-detail__content section { padding: 44px clamp(24px, 5vw, 66px); border: 1px solid var(--rc-line); background: #fff; }
.rcase-detail__content h2 { margin: 0 0 26px; color: var(--rc-navy-deep); font-family: serif; font-size: clamp(26px, 3vw, 36px); font-weight: 500; }
.rcase-detail__content section > div p,
.rcase-detail__quote blockquote p { margin: 0 0 1em; font-size: 15px; line-height: 2; }
.rcase-detail__quote { border: 0 !important; background: #edf5f3 !important; }
.rcase-detail__quote blockquote { margin: 0; padding: 0; }
.rcase-detail__staff { margin: 24px 0 0; color: var(--rc-muted); text-align: right; }
.rcase-detail__back { padding-bottom: 76px; text-align: center; }
.rcase-detail__back a,
.rcase-not-found a { display: inline-block; padding-bottom: 5px; border-bottom: 1px solid var(--rc-navy); color: var(--rc-navy); text-decoration: none; }
.rcase-not-found { padding-top: 180px; padding-bottom: 120px; text-align: center; }

.rcases-home { padding: 90px 0; background: #f5f7f6; }
.rcases-home__head { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 32px; }
.rcases-home__head h2 { margin: 0; color: var(--rc-navy-deep); font-family: serif; font-size: clamp(32px, 4vw, 48px); font-weight: 500; letter-spacing: .08em; }
.rcases-home__lead { margin: 12px 0 0; color: var(--rc-muted); line-height: 1.8; }
.rcases-home__all { color: var(--rc-navy); font-weight: 700; text-decoration: none; }
.rcases-home .rcase-card__body { min-height: 230px; }

@media (max-width: 900px) {
  .rcases-hero__inner { grid-template-columns: 1fr; }
  .rcases-hero__copy { padding: 44px 34px; }
  .rcases-hero__visual { min-height: 330px; }
  .rcases-filter > .rcases-wrap { grid-template-columns: 1fr; gap: 30px; }
  .rcases-filter__group + .rcases-filter__group { padding: 30px 0 0; border-top: 1px solid var(--rc-line); border-left: 0; }
  .rcases-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rcases-cta__inner { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 640px) {
  .rcases-wrap { width: min(100% - 30px, 1180px); }
  .rcases-hero { padding-top: 80px; }
  .rcases-hero__copy { padding: 38px 24px; }
  .rcases-hero__visual { min-height: 240px; }
  .rcases-filter { padding: 26px 0; }
  .rcases-filter button { min-width: 0; padding: 10px 14px; }
  .rcases-list-section { padding: 55px 0 70px; }
  .rcases-grid { grid-template-columns: 1fr; }
  .rcases-section-heading h2 { font-size: 27px; }
  .rcases-cta { padding: 48px 0; }
  .rcases-cta a { min-width: 0; width: 100%; padding: 17px 22px; }
  .rcase-breadcrumb { padding-top: 105px; }
  .rcase-detail__pair { grid-template-columns: 1fr; gap: 10px; }
  .rcase-detail__content section { padding: 34px 22px; }
  .rcases-home { padding: 65px 0; }
  .rcases-home__head { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  .rcase-card,
  .rcase-card__images img,
  .rcases-cta a { transition: none; }
}