:root {
  color-scheme: light;
  --paper: #f4f1eb;
  --surface: #fffdf8;
  --ink: #22262a;
  --muted: #64605a;
  --line: #ded5c6;
  --green: #2f6f73;
  --wine: #8b2f47;
  --ochre: #b07a22;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  line-height: 1.72;
  letter-spacing: 0;
}
a { color: inherit; }
.site-header {
  background: #243837;
  color: #fffaf1;
  padding: 28px 18px 24px;
}
.site-header > div, main, footer {
  width: min(100%, 1040px);
  margin: 0 auto;
}
.eyebrow {
  margin: 0 0 8px;
  color: #f0c46f;
  font-size: .82rem;
  font-weight: 800;
  text-transform: uppercase;
}
h1 {
  margin: 0;
  font-family: "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(2rem, 9vw, 4rem);
  line-height: 1.06;
}
.intro {
  max-width: 42rem;
  margin: 14px 0 0;
  color: #e8e1d6;
}
main {
  padding: 18px;
}
.toolbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  min-height: 48px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}
.toolbar p { margin: 0; }
.toolbar strong {
  color: var(--wine);
  font-size: 1.25rem;
}
.book-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: 20px 0 30px;
}
.book-card {
  display: grid;
  grid-template-columns: minmax(94px, 32%) 1fr;
  gap: 14px;
  align-items: stretch;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.cover-link {
  display: block;
  min-height: 180px;
  background: #e7ded0;
}
.cover-link img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.book-body {
  padding: 15px 14px 15px 0;
}
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}
.tag-row span {
  border: 1px solid #d7c9b7;
  border-radius: 999px;
  color: var(--muted);
  font-size: .74rem;
  line-height: 1;
  padding: 5px 8px;
  background: #fffaf0;
}
h2 {
  margin: 0;
  font-size: clamp(1.18rem, 5vw, 1.7rem);
  line-height: 1.28;
}
.subtitle {
  margin: 7px 0 8px;
  color: var(--wine);
  font-weight: 700;
}
.book-body p:not(.subtitle) {
  margin: 0;
  color: var(--muted);
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}
.primary-action, .secondary-action {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  padding: 9px 13px;
  text-decoration: none;
  font-weight: 800;
}
.primary-action {
  background: var(--green);
  color: #fff;
}
.secondary-action {
  border: 1px solid var(--line);
  color: var(--ink);
  background: #fff;
}
footer {
  padding: 0 18px 34px;
  color: var(--muted);
}
footer p {
  margin: 0;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
@media (min-width: 760px) {
  .site-header { padding: 44px 28px 34px; }
  main { padding: 24px 28px; }
  .book-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
  .book-card { grid-template-columns: 38% 1fr; }
  .book-body { padding: 18px 16px 18px 0; }
  footer { padding-left: 28px; padding-right: 28px; }
}