:root {
  color-scheme: light;
  --bg: #f6f7f7;
  --surface: #ffffff;
  --surface-soft: #eef1f1;
  --line: #d9dddd;
  --text: #202525;
  --muted: #637070;
  --strong: #111515;
  --accent: #0f766e;
  --accent-soft: #dcefed;
  --shadow: 0 14px 36px rgba(28, 40, 40, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Yu Gothic UI", "Meiryo", system-ui, sans-serif;
  line-height: 1.65;
}

a {
  color: inherit;
}

.site-header,
main,
.site-footer {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  padding: 52px 0 28px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  color: var(--strong);
  font-size: clamp(36px, 8vw, 68px);
  line-height: 1;
  letter-spacing: 0;
}

.lead {
  max-width: 680px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.site-nav a,
.filter-button,
.action-link {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  font: inherit;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
}

.filter-button {
  cursor: pointer;
}

.filter-button.is-active,
.action-link.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.intro {
  border-block: 1px solid var(--line);
  padding: 20px 0;
  color: var(--muted);
}

.intro code {
  color: var(--strong);
  font-weight: 700;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 28px 0 18px;
}

.status-line {
  min-height: 28px;
  color: var(--muted);
  font-size: 14px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 18px;
  padding: 16px 0 64px;
}

.product-card {
  display: grid;
  grid-template-rows: auto 1fr;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.product-visual,
.detail-visual {
  display: grid;
  place-items: center;
  min-height: 210px;
  background: linear-gradient(180deg, #ffffff 0%, var(--surface-soft) 100%);
  color: var(--accent);
  font-size: 42px;
  font-weight: 800;
}

.product-visual img,
.detail-visual img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #ffffff;
}

.product-body {
  display: grid;
  gap: 12px;
  padding: 18px;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #164f4a;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
}

.price {
  color: var(--strong);
  font-weight: 800;
}

.product-card h2 {
  margin: 0;
  color: var(--strong);
  font-size: 20px;
  line-height: 1.35;
}

.product-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.card-actions,
.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.action-link[aria-disabled="true"] {
  pointer-events: none;
  color: var(--muted);
  background: var(--surface-soft);
}

.product-detail {
  display: grid;
  grid-template-columns: minmax(0, 420px) minmax(0, 1fr);
  gap: 28px;
  padding: 28px 0 64px;
}

.detail-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 24px;
}

.detail-panel h2 {
  margin: 0 0 12px;
  color: var(--strong);
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.14;
}

.detail-list {
  display: grid;
  gap: 10px;
  margin: 22px 0;
  padding: 0;
  list-style: none;
}

.detail-list li {
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.detail-list b {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.source-note {
  margin-top: 22px;
  color: var(--muted);
  font-size: 12px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  border-top: 1px solid var(--line);
  padding: 22px 0 34px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    padding-top: 32px;
  }

  .product-detail {
    grid-template-columns: 1fr;
  }

  .site-footer {
    flex-direction: column;
  }
}