:root {
  --page-bg: #f3eee6;
  --surface: #fffdf9;
  --surface-strong: #ffffff;
  --ink: #48362a;
  --muted: #7f6b5c;
  --line: #decdbd;
  --brand: #8aa447;
  --brand-deep: #5f7d30;
  --shadow: 0 18px 40px rgba(72, 54, 42, 0.12);
  --radius-lg: 30px;
  --radius-md: 22px;
  --content-width: 1120px;
  --title-card-height: 116px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.7), transparent 36%),
    linear-gradient(180deg, #fbf7f1 0%, var(--page-bg) 100%);
}

img {
  display: block;
  width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.page-shell {
  padding: 32px 20px 0;
}

.hero,
.content,
.content-footer,
.site-footer {
  width: min(100%, var(--content-width));
  margin: 0 auto;
}

.hero {
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.content {
  margin-top: 28px;
}

.section-links,
.section-sns {
  padding: 28px;
  border: 1px solid rgba(140, 110, 88, 0.14);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 252, 247, 0.98));
  box-shadow: var(--shadow);
}

.image-grid {
  display: grid;
  gap: 28px;
}

.site-cards,
.sns-panels {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.site-cards {
  display: grid;
  gap: 28px;
}

.site-card {
  display: grid;
  gap: 24px;
}

.site-card .image-link + .image-link {
  margin-top: 0;
}

/* PC: keep title cards' bottom edges aligned */
@media (min-width: 901px) {
  .site-cards {
    align-items: start;
  }

  .site-card {
    grid-template-rows: var(--title-card-height) auto auto;
  }

  .site-card > .image-link:first-child {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 0; /* allow flex child to shrink within grid row */
    padding: 10px 16px;
    background: #fff;
  }

  .site-card > .image-link:first-child img {
    width: 100%;
    height: 100%;
    max-height: calc(var(--title-card-height) - 20px);
    object-fit: contain;
    object-position: center center;
  }
}

/* SNS block inside each site card */
.site-sns {
  overflow: hidden;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.site-sns-visual img {
  border-radius: 18px;
  box-shadow: 0 10px 24px rgba(72, 54, 42, 0.08);
}

.site-sns-body {
  padding: 16px 10px 6px;
}

.image-link {
  display: block;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--surface-strong);
  box-shadow: 0 12px 26px rgba(72, 54, 42, 0.08);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.image-link:hover,
.image-link:focus-visible,
.sns-link:hover,
.sns-link:focus-visible,
.to-top:hover,
.to-top:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 18px 36px rgba(72, 54, 42, 0.16);
}

.sns-panels {
  display: grid;
  gap: 28px;
}

.sns-panel {
  overflow: hidden;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.sns-panel-visual img {
  border-radius: 18px;
  box-shadow: 0 10px 24px rgba(72, 54, 42, 0.08);
}

.sns-panel-body {
  padding: 16px 10px 6px;
}

.sns-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.sns-links-single {
  justify-content: flex-start;
}

.sns-link {
  min-width: 156px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.sns-link img {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.sns-link-youtube img {
  width: 72px;
}

.sns-link span {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--ink);
}

.content-footer {
  margin-top: 28px;
  padding: 0 0 24px;
  text-align: center;
}

.to-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 260px;
  padding: 14px 20px;
  border-radius: 999px;
  border: 1px solid rgba(95, 125, 48, 0.24);
  background: #fff;
  color: var(--brand-deep);
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(72, 54, 42, 0.1);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.site-footer {
  width: min(100%, var(--content-width));
  margin: 0 auto;
  padding: 8px 0 12px;
  border-top: 2px solid #df3b4a;
  text-align: right;
  color: #df3b4a;
  background: transparent;
}

.site-footer p {
  margin: 0;
  padding-right: 2px;
  font-size: 0.8rem;
  line-height: 1.35;
  letter-spacing: 0.02em;
}

@media (max-width: 900px) {
  .page-shell {
    padding-inline: 14px;
  }

  .section-links,
  .section-sns {
    padding: 20px;
  }

  .site-cards,
  .sns-panels {
    grid-template-columns: 1fr;
  }

  .site-card > .image-link:first-child {
    height: auto;
    padding: 10px 12px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding-top: 14px;
  }

  .content {
    margin-top: 16px;
  }

  .section-links,
  .section-sns {
    padding: 16px;
    border-radius: 20px;
  }

  .image-grid,
  .sns-panels,
  .sns-links {
    gap: 14px;
  }

  .sns-panel {
    padding: 14px;
  }

  .sns-panel-body {
    padding: 14px 4px 2px;
  }

  .site-sns {
    padding: 14px;
  }

  .site-sns-body {
    padding: 14px 4px 2px;
  }

  .sns-link,
  .to-top {
    width: 100%;
  }

  .sns-link-youtube img {
    width: 64px;
  }

  .site-footer {
    padding: 8px 0 14px;
  }

  .site-footer p {
    font-size: 0.72rem;
  }
}