:root {
  --bg: #0d120f;
  --panel: #151c18;
  --panel-strong: #1f2b24;
  --line: rgba(255,255,255,.12);
  --text: #f4f1e8;
  --muted: #c6c0ad;
  --accent: #d6a95a;
  --accent-strong: #f1c76b;
  --danger: #ff8d9a;
  --shadow: 0 24px 80px rgba(0,0,0,.35);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  line-height: 1.75;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
a.card { display: block; color: inherit; text-decoration: none; }
a.card:hover { border-color: rgba(214,169,90,.65); }
.skip-link {
  position: absolute; left: 16px; top: -48px; z-index: 10;
  padding: 8px 12px; background: var(--accent); color: #17130b; border-radius: 6px;
}
.skip-link:focus { top: 16px; }
.site-header {
  position: sticky; top: 0; z-index: 5;
  border-bottom: 1px solid var(--line);
  background: rgba(13,18,15,.92);
  backdrop-filter: blur(16px);
}
.nav {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto; min-height: 72px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
}
.brand { text-decoration: none; font-weight: 800; line-height: 1.25; }
.brand span { display: block; color: var(--muted); font-size: 12px; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 18px; font-size: 14px; }
.nav-links a { color: var(--muted); text-decoration: none; white-space: nowrap; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }
.button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 10px 18px; border: 1px solid transparent; border-radius: 6px;
  background: var(--accent); color: #17130b; font-weight: 800; text-decoration: none; line-height: 1.3;
}
.button.secondary { background: transparent; color: var(--text); border-color: var(--line); }
.link-button { margin-top: 12px; }
.plain-link {
  color: var(--accent-strong);
  text-decoration: underline;
  text-underline-offset: 3px;
  overflow-wrap: anywhere;
}
.plain-link:hover {
  color: var(--text);
}
.link-list {
  display: grid;
  gap: 14px;
}
.link-list p {
  margin: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}
.link-list a {
  color: var(--accent-strong);
  text-decoration: underline;
  text-underline-offset: 3px;
  overflow-wrap: anywhere;
}
.link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.link-card {
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(31,43,36,.96), rgba(21,28,24,.98));
  box-shadow: 0 18px 42px rgba(0,0,0,.22);
}
.link-card h2 {
  margin-bottom: 10px;
  font-size: 24px;
}
.link-card p:not(.link-meta) {
  margin-bottom: 0;
  color: var(--muted);
}
.link-meta {
  margin-bottom: 8px;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 800;
}
.external-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 42px;
  padding: 9px 16px;
  border: 1px solid rgba(241,199,107,.45);
  border-radius: 6px;
  color: var(--accent-strong);
  font-weight: 800;
  line-height: 1.3;
  text-decoration: none;
}
.external-link:hover {
  background: var(--accent);
  color: #17130b;
}
.hero { min-height: calc(100svh - 72px); display: grid; align-items: end; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(8,13,10,.36) 0%, rgba(8,13,10,.18) 42%, rgba(8,13,10,.08) 74%),
    linear-gradient(180deg, rgba(8,13,10,.02) 48%, rgba(13,18,15,.55) 100%),
    url("image/generated/catch-nature-composite.jpg") center top / auto no-repeat;
  transform: none;
  filter: saturate(1.05) contrast(1.03) brightness(1.08);
}
.hero-inner {
  position: relative; width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 80px 0 72px;
}
.hero-inner > .eyebrow,
.hero-inner > h1,
.hero-inner > .lead,
.hero-inner > .hero-actions {
  max-width: 720px;
}
.hero-inner::before {
  content: "";
  position: absolute;
  left: -24px;
  bottom: 46px;
  width: min(760px, calc(100% + 48px));
  height: 390px;
  z-index: -1;
  border-radius: 8px;
  background: rgba(8, 13, 10, .54);
  border: 1px solid rgba(255,255,255,.08);
  box-shadow: 0 24px 80px rgba(0,0,0,.28);
  backdrop-filter: blur(2px);
}
.eyebrow { margin: 0 0 14px; color: var(--accent-strong); font-size: 14px; font-weight: 800; letter-spacing: 0; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 760px; margin-bottom: 18px; font-size: clamp(42px, 7vw, 84px); line-height: 1.05; letter-spacing: 0; }
h2 { margin-bottom: 0; font-size: clamp(28px, 4vw, 44px); line-height: 1.2; letter-spacing: 0; }
h3 { margin-bottom: 12px; font-size: 20px; }
.lead { max-width: 720px; color: var(--muted); font-size: 18px; }
.hero-actions, .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.quick-info {
  width: min(1120px, calc(100% - 32px)); margin: -36px auto 72px; position: relative; z-index: 1;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line); background: rgba(21,28,24,.96); box-shadow: var(--shadow);
}
.quick-info div { padding: 20px; border-right: 1px solid var(--line); }
.quick-info div:last-child { border-right: 0; }
.quick-info dt { color: var(--muted); font-size: 12px; font-weight: 800; }
.quick-info dd { margin: 6px 0 0; font-size: 18px; font-weight: 800; }
.brand-banner { width: min(1120px, calc(100% - 32px)); margin: 0 auto 8px; }
.brand-banner img { width: auto; max-width: 100%; margin: 0 auto; border-radius: 8px; border: 1px solid var(--line); box-shadow: var(--shadow); }
.section { width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 64px 0; }
.section-header { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
.section-header p { max-width: 560px; margin-bottom: 0; color: var(--muted); }
.grid { display: grid; gap: 18px; }
.grid.two { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0,1fr)); }
.card { border: 1px solid var(--line); border-radius: 8px; background: var(--panel); overflow: hidden; }
.card-body { padding: 24px; }
.card p, .card li { color: var(--muted); }
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag-list span,
.menu-item {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255,255,255,.04);
  color: var(--muted);
}
.tag-list span {
  padding: 6px 10px;
  font-weight: 700;
}
.menu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.menu-item {
  padding: 14px 16px;
}
.blog-section {
  padding-top: 16px;
}
.blog-card {
  background: linear-gradient(135deg, rgba(31,43,36,.98), rgba(21,28,24,.98));
}
.blog-card h2 {
  font-size: clamp(26px, 3vw, 38px);
  margin-bottom: 10px;
}
.blog-card p:not(.eyebrow) {
  color: var(--muted);
}
.notice { border-left: 4px solid var(--accent); }
.notice.important, .important { border-left: 4px solid var(--danger); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
table { width: 100%; min-width: 720px; border-collapse: collapse; }
th, td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--accent-strong); font-size: 14px; }
td { color: var(--muted); }
tr:last-child td { border-bottom: 0; }
.feature-image { aspect-ratio: 16 / 10; width: 100%; object-fit: cover; }
.map-card { max-width: 680px; margin: 0 auto; background: #f7f7f2; padding: 10px; }
.map-image { width: 100%; height: auto; object-fit: contain; border-radius: 6px; }
.gallery { display: grid; grid-template-columns: 1.4fr 1fr 1fr; grid-auto-rows: 220px; gap: 12px; }
.gallery img { width: 100%; height: 100%; object-fit: cover; border-radius: 8px; }
.gallery img:first-child { grid-row: span 2; }
.facility-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, 200px);
  justify-content: center;
  align-items: start;
  gap: 16px;
}
.facility-gallery img,
.native-image {
  width: 200px;
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 16px 40px rgba(0,0,0,.24);
}
.natural-card {
  display: grid;
  place-items: center;
  padding: 18px;
}
.list { margin: 0; padding-left: 1.2em; }
.list li + li { margin-top: 8px; }
.map-frame { width: 100%; min-height: 420px; border: 0; border-radius: 8px; }
.page-hero { background: var(--panel-strong); border-bottom: 1px solid var(--line); }
.page-hero .section { padding-top: 56px; padding-bottom: 56px; }
.site-footer { margin-top: 48px; border-top: 1px solid var(--line); background: #090d0b; }
.footer-inner {
  width: min(1120px, calc(100% - 32px)); margin: 0 auto; padding: 32px 0;
  display: flex; justify-content: space-between; gap: 24px; color: var(--muted);
}
.footer-inner a { color: var(--text); }
@media (max-width: 860px) {
  .nav { align-items: flex-start; padding: 14px 0; flex-direction: column; }
  .nav-links { width: 100%; overflow-x: auto; padding-bottom: 4px; }
  .quick-info, .grid.two, .grid.three, .link-grid { grid-template-columns: 1fr; }
  .quick-info div { border-right: 0; border-bottom: 1px solid var(--line); }
  .quick-info div:last-child { border-bottom: 0; }
  .section-header, .footer-inner { display: block; }
  .gallery { grid-template-columns: 1fr 1fr; grid-auto-rows: 160px; }
  .gallery img:first-child { grid-column: span 2; grid-row: span 1; }
}
@media (max-width: 540px) {
  .hero { min-height: 720px; }
  .hero-inner { padding-top: 56px; }
  .button { width: 100%; }
  .gallery { grid-template-columns: 1fr; }
  .gallery img:first-child { grid-column: auto; }
}

/* Smartphone text fix: remove duplicate hero title and use a text-free image. */
@media (max-width: 860px) {
  .brand {
    max-width: 100%;
    font-size: clamp(22px, 5.2vw, 28px);
    line-height: 1.25;
  }

  .brand span {
    margin-top: 2px;
    font-size: 11px;
    line-height: 1.2;
  }

  .hero {
    display: block;
    min-height: 0;
    padding-top: min(46vw, 330px);
    overflow: visible;
  }

  .hero::before {
    bottom: auto;
    height: min(46vw, 330px);
    background:
      linear-gradient(180deg, rgba(8,13,10,.04) 0%, rgba(13,18,15,.26) 100%),
      url("image/generated/water-bg-kosuge-tg.jpg") center center / cover no-repeat;
  }

  .hero-inner {
    width: min(100% - 24px, 1120px);
    padding: 16px 0 0;
  }

  .hero-inner::before,
  .hero-inner > .eyebrow,
  .hero-inner > h1,
  .hero-inner > .lead {
    display: none;
  }

  .hero-actions {
    display: grid;
    gap: 10px;
    margin: 0;
  }

  .button {
    width: 100%;
  }

  .quick-info {
    margin: 24px auto 48px;
  }
}

@media (max-width: 540px) {
  .hero {
    padding-top: 240px;
  }

  .hero::before {
    height: 240px;
  }
}
/* Smartphone image size adjustment. */
@media (max-width: 860px) {
  .hero {
    padding-top: min(46vw, 330px);
  }

  .hero::before {
    height: min(46vw, 330px);
  }
}

@media (max-width: 540px) {
  .hero {
    padding-top: 240px;
  }

  .hero::before {
    height: 240px;
  }
}
.sns-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.sns-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  line-height: 1.2;
  background: rgba(255,255,255,.04);
}

.sns-links a:hover {
  border-color: rgba(214,169,90,.65);
  background: rgba(214,169,90,.12);
}

.sns-links img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

@media (max-width: 540px) {
  .sns-links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sns-links a {
    justify-content: center;
  }
}

/* Smartphone hero: show the complete brochure collage without cropping. */
@media (max-width: 860px) {
  .hero {
    padding-top: min(33.333vw, 287px);
  }

  .hero::before {
    height: min(33.333vw, 287px);
    background: #08110c url("image/generated/spring-collage-mobile.png") center / contain no-repeat;
    filter: none;
  }
}