:root {
  --bg-color: #faf7f2;
  --accent-color: #c2553f;
  --text-color: #2b2b2b;
  --muted-color: #6f6f6f;
  --border-color: #e0d8cc;
  --max-width: 960px;
  --spacing: 1.5rem;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  line-height: 1.7;
}

a {
  color: var(--accent-color);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border-color);
  padding: calc(var(--spacing) * 0.75) var(--spacing);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

.branding h1 {
  margin: 0;
  font-size: 1.6rem;
  letter-spacing: 0.05em;
}

.tagline {
  margin: 0.25rem 0 0;
  color: var(--muted-color);
  font-size: 0.95rem;
}

.site-nav {
  display: flex;
  gap: 1rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
  margin-left: auto;
}

.site-nav a {
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  font-size: 0.95rem;
  border: 1px solid transparent;
  white-space: nowrap;
}

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

.site-nav a.active {
  background: var(--accent-color);
  color: #fff;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing) var(--spacing);
}

.section {
  padding: calc(var(--spacing) * 1.5) 0;
  border-bottom: 1px solid var(--border-color);
}

.section:last-of-type {
  border-bottom: none;
}

.section h2 {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.section-intro {
  margin-top: 0;
  color: var(--muted-color);
}

.product {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: var(--spacing);
  margin-top: var(--spacing);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.product-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.product-header h3 {
  margin: 0;
  font-size: 1.35rem;
}

.product-description {
  margin-top: 0;
}

.product-gallery {
  display: grid;
  gap: 0.75rem;
  margin-top: var(--spacing);
}

.product-gallery.single {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.product-gallery.grid {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.product-gallery figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.product-gallery img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: #f2ece4;
}

.product-gallery figure .lightbox-trigger {
  border: none;
  padding: 0;
  background: transparent;
  cursor: zoom-in;
  display: block;
  width: 100%;
}

.product-gallery figure .lightbox-trigger:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 4px;
}

.product-gallery figcaption {
  font-size: 0.9rem;
  color: var(--muted-color);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
}

.product-code {
  font-weight: 700;
  color: var(--accent-color);
  letter-spacing: 0.05em;
}

.product-name {
  font-weight: 600;
  color: var(--text-color);
}

.product-price {
  font-size: 0.9rem;
}

.cta-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.25rem;
  border-radius: 999px;
  background: var(--accent-color);
  color: #fff;
  font-weight: 600;
  transition: background 0.2s ease;
}

.button:hover,
.button:focus {
  background: #9f422f;
  text-decoration: none;
}

.link {
  font-weight: 600;
}

.contact-list,
.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

.contact-list span {
  display: inline-block;
  min-width: 3.5rem;
  font-weight: 600;
}

.info-grid {
  display: grid;
  gap: var(--spacing);
}

.info-block {
  background: #fff;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  padding: var(--spacing);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.definition-list {
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

.definition-list div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 0.75rem;
}

.definition-list dt {
  font-weight: 600;
  color: var(--muted-color);
}

.definition-list dd {
  margin: 0;
}

.note {
  margin-top: 1rem;
  color: var(--muted-color);
  font-size: 0.95rem;
}

.store-hours {
  margin-top: 0.5rem;
  font-weight: 600;
}

.step-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1.25rem;
}

.step-list h3 {
  margin: 0 0 0.35rem;
  color: var(--accent-color);
}

.map-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.map-container.small {
  padding-bottom: 42%;
  margin-top: 1rem;
}

.map-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.site-footer {
  text-align: center;
  padding: var(--spacing);
  font-size: 0.85rem;
  color: var(--muted-color);
}

.price-note {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--muted-color);
  text-align: right;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
}

.footer-links a {
  color: inherit;
  text-decoration: none;
}

.footer-links a:hover,
.footer-links a:focus {
  text-decoration: underline;
}

/* Lightbox */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.75);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease;
  padding: 1.5rem;
  z-index: 999;
}

.lightbox-overlay.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  position: relative;
  max-width: min(90vw, 960px);
  max-height: 90vh;
}

.lightbox-content img {
  width: 100%;
  height: auto;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
}

.lightbox-close {
  position: absolute;
  top: -12px;
  right: -12px;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 1.2rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-close:hover,
.lightbox-close:focus {
  background: rgba(0, 0, 0, 0.9);
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--muted-color);
  margin: var(--spacing) 0;
}

@media (max-width: 640px) {
  .site-header {
    gap: 0.5rem;
  }

  .site-nav {
    width: 100%;
    flex-wrap: nowrap;
    gap: 0.5rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .site-nav::-webkit-scrollbar {
    display: none;
  }

  .site-nav a {
    flex: 1 1 auto;
    text-align: center;
    font-size: 0.9rem;
    padding: 0.45rem 0.55rem;
  }
}

@media (min-width: 720px) {
  .site-header {
    padding: calc(var(--spacing) * 0.9) var(--spacing);
  }

  .site-nav {
    margin-top: 0;
  }

  .product-gallery.grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }

  .info-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}