:root{--ln-blue:#17486f;--ln-ink:#242220;--ln-soft:#f4f1ed;--ln-line:#ddd7d0;--ln-muted:#77716b}
.category-page{background:#fff;color:var(--ln-ink)}
.category-hero{max-width:1120px;margin:32px auto 0;padding:0 24px}
.category-hero__box{background:#f4f1ed;padding:52px 64px 50px;position:relative;overflow:hidden}
.category-hero__no{font-family:Georgia,serif;font-size:13px;letter-spacing:.22em;color:#8f8880}
.category-hero__en{font-family:Georgia,serif;color:var(--ln-blue);font-size:15px;letter-spacing:.18em;margin-top:10px}
.category-hero h1{font-family:"Noto Serif JP","Yu Mincho",serif;font-weight:400;font-size:42px;letter-spacing:.06em;margin:12px 0 10px}
.category-hero__sub{font-size:15px;color:#59544f;letter-spacing:.06em}
.category-hero__desc{max-width:620px;font-size:13px;line-height:2;color:#77716b;margin-top:23px}
.category-switch{max-width:1120px;margin:30px auto 0;padding:0 24px;display:flex;flex-wrap:wrap;gap:8px}
.category-switch a{font-family:Georgia,serif;font-size:11px;letter-spacing:.11em;border:1px solid #dfd9d3;padding:10px 14px;color:#706a64;text-decoration:none}
.category-switch a.is-current{background:var(--ln-blue);border-color:var(--ln-blue);color:#fff}
.category-books{max-width:1120px;margin:62px auto 90px;padding:0 24px}
.category-books__heading{display:flex;align-items:end;gap:24px;margin-bottom:28px}
.category-books__heading h2{font-family:"Noto Serif JP","Yu Mincho",serif;font-size:30px;font-weight:400;letter-spacing:.06em;margin:0}
.category-books__heading span{font-family:Georgia,serif;font-size:10px;color:#8e8780;letter-spacing:.18em}
.category-books__rule{height:1px;background:#dfdbd6;flex:1;margin-bottom:9px}
.book-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--ln-line);border-left:1px solid var(--ln-line)}
.book-card{position:relative;min-height:205px;padding:28px 30px 26px;border-right:1px solid var(--ln-line);border-bottom:1px solid var(--ln-line);text-decoration:none;color:inherit;background:#fff;transition:background .25s ease}
.book-card:hover{background:#faf8f5}
.book-card__index{display:block;font-family:Georgia,serif;font-size:10px;letter-spacing:.16em;color:#aaa29b;margin-bottom:30px}
.book-card h3{font-family:"Noto Serif JP","Yu Mincho",serif;font-weight:400;font-size:20px;line-height:1.65;letter-spacing:.04em;margin:0 0 14px;padding-right:30px}
.book-card__meta{font-size:11px;line-height:1.85;color:#77716b}
.book-card__price{display:block;margin-top:2px}
.book-card__arrow{position:absolute;right:26px;bottom:24px;font-family:Georgia,serif;font-size:9px;letter-spacing:.12em;color:var(--ln-blue)}
.books-back{max-width:1120px;margin:-40px auto 80px;padding:0 24px}
.books-back a{font-family:Georgia,serif;font-size:11px;letter-spacing:.12em;color:var(--ln-blue);text-decoration:none}
@media(max-width:760px){
 .category-hero{margin-top:18px;padding:0 16px}.category-hero__box{padding:34px 26px 32px}
 .category-hero h1{font-size:31px}.category-switch{padding:0 16px}
 .category-books{margin-top:42px;padding:0 16px}.book-list{grid-template-columns:1fr}
 .category-books__heading h2{font-size:25px}.book-card{min-height:180px;padding:24px}
}


/* --- cover image layout --- */
.book-card{
  display:grid;
  grid-template-columns:132px 1fr;
  column-gap:28px;
  align-items:start;
}
.book-card__cover{
  width:132px;
  height:180px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:#f4f1ed;
  overflow:hidden;
  grid-row:1 / span 5;
}
.book-card__cover img{
  display:block;
  width:auto;
  height:auto;
  max-width:100%;
  max-height:100%;
  object-fit:contain;
  box-shadow:0 8px 20px rgba(0,0,0,.10);
}
.book-card__index,
.book-card h3,
.book-card__meta{
  grid-column:2;
}
.book-card__index{margin-bottom:18px}
.book-card h3{padding-right:20px}
.book-card__arrow{right:24px}
.book-card__cover.is-placeholder::before{
  content:"BOOK";
  font-family:Georgia,serif;
  font-size:11px;
  letter-spacing:.18em;
  color:#aaa29b;
}
@media(max-width:760px){
  .book-card{
    grid-template-columns:92px 1fr;
    column-gap:18px;
    min-height:150px;
  }
  .book-card__cover{width:92px;height:126px}
  .book-card__index{margin-bottom:11px}
  .book-card h3{font-size:17px;line-height:1.55}
}


/* =========================================================
   FULL BOOK INFO / readability revision
   小さい文字を小さくしすぎない設計
   ========================================================= */
.book-list{
  grid-template-columns:repeat(2,minmax(0,1fr));
}
.book-card{
  display:grid;
  grid-template-columns:148px minmax(0,1fr);
  column-gap:30px;
  align-items:start;
  min-height:270px;
  padding:30px;
}
.book-card__cover{
  width:148px;
  height:210px;
  grid-row:auto;
}
.book-card__content{
  min-width:0;
  display:flex;
  flex-direction:column;
  min-height:210px;
}
.book-card__index{
  grid-column:auto;
  margin:0 0 16px;
  font-size:11px;
}
.book-card__catch{
  margin:0 0 8px;
  font-family:"Noto Serif JP","Yu Mincho",serif;
  font-size:15px;
  line-height:1.65;
  color:#57514c;
  letter-spacing:.035em;
}
.book-card__catch--empty{
  display:none;
}
.book-card h3{
  grid-column:auto;
  margin:0 0 17px;
  padding:0;
  font-size:22px;
  line-height:1.55;
}
.book-card__meta{
  grid-column:auto;
  display:flex;
  flex-wrap:wrap;
  gap:5px 18px;
  margin:0;
  font-size:14px;
  line-height:1.75;
  color:#4f4b47;
}
.book-card__meta span{
  white-space:normal;
}
.book-card__meta b{
  font-weight:500;
}
.book-card__arrow{
  position:static;
  margin-top:auto;
  padding-top:18px;
  font-family:"Noto Serif JP","Yu Mincho",serif;
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  color:#143e69;
  text-decoration:underline;
  text-underline-offset:3px;
}
@media(max-width:900px){
  .book-list{grid-template-columns:1fr}
  .book-card{grid-template-columns:140px minmax(0,1fr)}
  .book-card__cover{width:140px;height:198px}
}
@media(max-width:560px){
  .book-card{
    grid-template-columns:104px minmax(0,1fr);
    column-gap:18px;
    padding:22px 18px;
    min-height:205px;
  }
  .book-card__cover{width:104px;height:148px}
  .book-card__content{min-height:148px}
  .book-card__catch{font-size:13px;line-height:1.55;margin-bottom:6px}
  .book-card h3{font-size:18px;line-height:1.5;margin-bottom:12px}
  .book-card__meta{font-size:13px;line-height:1.65;gap:2px 12px}
  .book-card__arrow{font-size:13px;padding-top:12px}
}