/* ボタンやカードなどの共通コンポーネント */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.85);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}

.site-header.is-scrolled {
  box-shadow: 0 1px 3px var(--color-shadow-soft);
}

.nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-height);
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand-logo {
  height: 32px;
  width: auto;
}

.site-nav {
  display: block;
}

.site-nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.site-nav a {
  color: var(--color-gray);
  font-size: 0.95rem;
  font-weight: 700;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-primary);
}

.site-nav a.is-active {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: var(--color-white);
  border: 1px solid var(--color-gray-lighter);
  border-radius: var(--radius-pill);
}

.nav-toggle-lines {
  position: relative;
  width: 20px;
  height: 14px;
}

.nav-toggle-line {
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-pill);
  transition:
    transform var(--transition-base),
    opacity var(--transition-base);
}

.nav-toggle-line:nth-child(1) {
  transform: translate3d(0, -6px, 0);
}

.nav-toggle-line:nth-child(2) {
  transform: translate3d(0, 0, 0);
}

.nav-toggle-line:nth-child(3) {
  transform: translate3d(0, 6px, 0);
}

.nav-toggle.is-open .nav-toggle-line:nth-child(1) {
  transform: translate3d(0, 0, 0) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle-line:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open .nav-toggle-line:nth-child(3) {
  transform: translate3d(0, 0, 0) rotate(-45deg);
}

.btn-primary,
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 220px;
  padding: var(--button-padding);
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  transition: all 0.3s ease;
}

.btn-primary {
  color: var(--color-white);
  background: var(--color-accent);
  box-shadow: var(--shadow-card);
}

.btn-outline {
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.btn-primary:hover,
.btn-outline:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.card {
  padding: var(--card-padding);
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  border-radius: var(--radius-pill);
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 72px;
  transform: translateX(-50%);
}

.scroll-indicator::before {
  position: absolute;
  width: 1px;
  height: 56px;
  content: "";
  background: var(--color-gray-lighter);
}

.scroll-indicator span {
  position: relative;
  z-index: 1;
  width: 2px;
  height: 20px;
  background: var(--color-gray);
}

.number-card {
  padding: 32px 24px;
  text-align: center;
  background: var(--color-surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
}

.number-value {
  display: inline-block;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1;
  color: var(--color-accent);
}

.number-suffix {
  display: inline-block;
  margin-left: 4px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.number-label {
  display: block;
  margin-top: 16px;
  font-size: 0.875rem;
  color: var(--color-gray);
}

.number-card.is-placeholder .number-suffix {
  display: none;
}

.photo-placeholder {
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-gray-light);
  background: linear-gradient(135deg, var(--color-placeholder-start), var(--color-placeholder-end));
  border-radius: var(--radius-card);
}

.culture-photo {
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.news-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 32px;
  font-weight: 700;
  color: var(--color-accent);
}

.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
  flex-wrap: wrap;
}