:root{
  --ink:#111111;--ink-2:#333333;--ink-3:#666666;--ink-4:#999999;
  --paper:#ffffff;--paper-2:#f8f9fa;--paper-3:#eeeeee;--paper-card:#ffffff;
  --red:#b5301f;--red-light:#f5e6e4;--gold:#9a7a1a;--gold-light:#faf6e8;
  --amazon:#ff9900;--amazon-dk:#e68000;
  --rakuten:#bf0000;--rakuten-dk:#990000;
  --audible:#252f3d;--audible-dk:#19222d;
  --border:rgba(0,0,0,.08);--border-2:rgba(0,0,0,.15);
  --r:6px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Noto Sans JP',sans-serif;background:var(--paper);color:var(--ink);line-height:1.7;letter-spacing:0.03em;}

header{background:var(--paper);color:var(--ink);border-bottom:1px solid var(--border);padding:4rem 0 3rem 0;}
.hdr-inner{max-width:1140px;margin:0 auto;padding:0 1.5rem;position:relative}
.hdr-kana{font-family:'Noto Sans JP',sans-serif;font-size:11px;font-weight:700;letter-spacing:.2em;color:var(--gold);margin-bottom:.75rem;display:flex;align-items:center;gap:10px}
.hdr-kana::before{content:'';width:15px;height:2px;background:var(--gold)}
h1{font-family:'Noto Serif JP',serif;font-size:clamp(1.8rem,4.5vw,2.8rem);font-weight:700;line-height:1.3;margin-bottom:1.5rem;color:#000;}
h1 span{color:var(--gold)}
.hdr-lead{font-size:13.5px;color:var(--ink-2);font-weight:400;max-width:760px;margin-bottom:1rem;line-height:1.8}
.hdr-sub{font-size:11px;color:var(--ink-3);font-weight:400;}

.nav-wrap{background:var(--paper-2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;box-shadow:0 4px 20px rgba(0,0,0,.03)}
.nav-inner{max-width:1140px;margin:0 auto;padding:.75rem 1.5rem;display:flex;gap:1rem;align-items:center;flex-wrap:wrap}
.search-row { display: flex; gap: 0.5rem; flex: 1; min-width: 280px; align-items: center; }
.search-box{position:relative;flex:1;}
.search-box input{width:100%;padding:9px 12px 9px 36px;border:1px solid var(--border-2);border-radius:4px;background:var(--paper-card);font-family:'Noto Sans JP',sans-serif;font-size:13px;color:var(--ink);outline:none;transition:all .15s;}
.search-box input:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(0,0,0,.05)}
.search-icon{position:absolute;left:11px;top:50%;transform:translateY(-50%);font-size:13px;color:var(--ink-3);pointer-events:none}

.btn-filter-toggle {
  display: none; background: white; border: 1px solid var(--border-2);
  padding: 8px 12px; font-size: 12px; font-weight: 700; border-radius: 4px;
  cursor: pointer; align-items: center; gap: 4px; white-space: nowrap; transition: background 0.2s;
}
.btn-filter-toggle:hover { background: var(--paper-2); }

.filter-groups{display:flex;gap:1rem;align-items:center;flex-wrap:wrap;flex:3;min-width:280px}
.filter-group{display:flex;align-items:center;gap:8px}
.filter-label{font-size:11px;color:var(--ink-3);font-weight:700;white-space:nowrap}
.chips{display:flex;gap:4px;flex-wrap:wrap}
.chip{padding:4px 12px;border-radius:20px;border:1px solid var(--border-2);background:var(--paper-card);font-family:'Noto Sans JP',sans-serif;font-size:11px;color:var(--ink-2);cursor:pointer;transition:all .15s;white-space:nowrap;font-weight:400;}
.chip:hover{background:var(--paper-3);color:var(--ink)}
.chip.on{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:700;}

.main{max-width:1140px;margin:0 auto;padding:2rem 1.5rem}
.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px 20px}

.card{background:var(--paper-card);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;transition:all .2s ease}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(0,0,0,.08);border-color:var(--border-2)}
.card.rank-1{border-top:3px solid var(--gold);background:linear-gradient(to bottom, var(--gold-light) 0%, var(--paper-card) 120px)}

.cover-wrap{position:relative;width:100%;padding-top:140%;background:var(--paper-2);overflow:hidden;border-bottom:1px solid var(--border)}
.cover-wrap img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:opacity .4s ease;z-index:2;opacity:1;}

.cover-wrap .placeholder {
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:1.6rem 1.2rem;text-align:center;z-index:1;box-sizing:border-box;
  background: linear-gradient(135deg, #fdfcf9 0%, #f4f1e9 100%);
}
.cover-wrap .placeholder::before {
  content:'';position:absolute;inset:10px;border:1px solid rgba(154, 122, 26, 0.18);pointer-events:none;
}
.placeholder-title{
  font-family:'Noto Serif JP',serif;font-size:13.5px;font-weight:700;color:var(--ink);line-height:1.6;
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;
  padding-bottom:12px;margin-bottom:10px;position:relative;width:82%;
}
.placeholder-title::after {
  content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:20px;height:1px;background:var(--gold);
}
.placeholder-author{font-family:'Noto Sans JP',sans-serif;font-size:11px;color:var(--ink-3);font-weight:500;letter-spacing:0.01em;}

.rank-badge{position:absolute;z-index:3;font-family:'Noto Sans JP',sans-serif;}
.rank-badge.rn{top:10px;left:10px;padding:3px 10px;border-radius:3px;background:var(--ink-2);color:#fff;font-size:10px;font-weight:700;box-shadow:0 2px 6px rgba(0,0,0,0.06);}

.rank-badge.r1 {
  top: -8px; left: -8px; border-radius: 50%; width: 54px; height: 54px;
  display: flex; align-items: center; justify-content: center; flex-direction: column; line-height: 1.1; padding: 0;
  background: linear-gradient(135deg, #fff3a1 0%, #f1c40f 50%, #b8860b 100%); color: #ffffff;
  box-shadow: 0 4px 10px rgba(184, 134, 11, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.6);
  border: 2px solid #ffffff; transform: rotate(-5deg); z-index: 10;
}
.rank-badge.r1 .crown { font-size: 14px; line-height: 1; }
.rank-badge.r1 .txt { font-size: 11px; font-weight: 800; letter-spacing: 0.02em; text-shadow: 0 1px 2px rgba(0,0,0,0.3); }

.year-badge{position:absolute;top:10px;right:10px;padding:3px 8px;border-radius:3px;font-family:'Noto Sans JP',sans-serif;font-size:10px;font-weight:700;z-index:3;background:rgba(255,255,255,0.9);color:var(--ink);border:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,0.02)}

.card-body{padding:1rem 1rem .6rem;flex:1;display:flex;flex-direction:column}
.tag-container{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:8px}
.genre-badge{font-size:10px;background:var(--paper-2);color:var(--ink-2);padding:2px 8px;border-radius:3px;font-weight:500;border:1px solid var(--border);}
.mood-badge{font-size:10px;background:#f0f7ff;color:#0055b3;padding:2px 8px;border-radius:3px;font-weight:700;}
.media-badge{font-size:10px;background:var(--red-light);color:var(--red);padding:2px 8px;border-radius:3px;font-weight:700}

.book-title{font-family:'Noto Serif JP',serif;font-size:15px;font-weight:700;line-height:1.4;color:var(--ink);margin-bottom:4px}
.book-author{font-size:11px;color:var(--ink-3);margin-bottom:.75rem}
.synopsis{font-size:11.5px;color:var(--ink-2);line-height:1.8;flex:1;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;text-align:justify;}

.card-foot{padding:.4rem 1rem 1rem;display:flex;flex-direction:column;gap:6px;margin-top:auto}
.btn-group-main, .btn-group-sub { display: flex; gap: 6px; width: 100%; }

.btn-link {
    display: flex; align-items: center; justify-content: center; gap: 4px;
    text-decoration: none; font-size: 11.5px; font-weight: 700;
    font-family:'Noto Sans JP',sans-serif; padding: 8px 4px; border-radius: 4px; transition: background .15s; flex: 1;
}
.btn-kindle{ background:var(--amazon); color:#111; }
.btn-kindle:hover{ background:var(--amazon-dk); }
.btn-rakuten{ background:var(--rakuten); color:#fff; }
.btn-rakuten:hover{ background:var(--rakuten-dk); }
.btn-audible{ background:var(--audible); color:#fff; }
.btn-audible:hover{ background:var(--audible-dk); }
.btn-paper{ border:1px solid var(--border-2); color:var(--ink-3); font-weight: 500; background:#fff; }
.btn-paper:hover{ background:var(--paper-2); color:var(--ink); }

.result-info{font-size:12px;color:var(--ink-3);margin-bottom:1.5rem;text-align:right;font-weight:500;}
.load-trigger{width:100%;height:40px;margin-top:2rem;display:flex;align-items:center;justify-content:center;}
.no-res{text-align:center;padding:5rem 1rem;color:var(--ink-3);font-size:14px;grid-column:1/-1;}
.affiliate{max-width:1140px;margin:0 auto;padding:2rem 1.5rem 1rem;font-size:13px;color:var(--ink-2);border-top:1px solid var(--border);text-align:center;line-height:1.7;}
footer{background:var(--ink);color:rgba(255,255,255,.4);padding:2rem;text-align:center;font-size:11px;letter-spacing:.05em;margin-top:4rem}

/* ここから: 年度ページ・ジャンルページ・全作品インデックス用（個別ページ生成 段階1で追加） */

/* 年度・ジャンルページのヘッダーはサイト名を<h1>にしない(そのページの本題は.page-h1側)。
   見た目はトップページの<h1>と揃える。 */
.site-title{font-family:'Noto Serif JP',serif;font-size:clamp(1.4rem,3.6vw,2rem);font-weight:700;line-height:1.3;margin-bottom:0;color:#000;}
.site-title span{color:var(--gold)}
.site-title a{color:inherit;text-decoration:none;}

.breadcrumb{max-width:1140px;margin:1.25rem auto 0;padding:0 1.5rem;font-size:11.5px;color:var(--ink-3);display:flex;gap:6px;flex-wrap:wrap;align-items:center;}
.breadcrumb a{color:var(--ink-3);text-decoration:none;}
.breadcrumb a:hover{color:var(--ink);text-decoration:underline;}
.breadcrumb .sep{color:var(--ink-4);}
.breadcrumb .current{color:var(--ink-2);font-weight:700;}

.page-h1{max-width:1140px;margin:1rem auto 0;padding:0 1.5rem;}
.page-h1 h1{font-family:'Noto Serif JP',serif;font-size:clamp(1.4rem,3.6vw,2rem);font-weight:700;color:#000;margin-bottom:.5rem;}
.page-h1 .page-lead{font-size:12.5px;color:var(--ink-3);}

.year-pager{max-width:1140px;margin:2rem auto 0;padding:1.25rem 1.5rem;border-top:1px solid var(--border);display:flex;justify-content:space-between;gap:1rem;font-size:13px;}
.year-pager a{color:var(--ink-2);text-decoration:none;font-weight:700;}
.year-pager a:hover{color:var(--gold);}
.year-pager .disabled{color:var(--ink-4);}

.blog-crosslink{max-width:1140px;margin:1rem auto 0;padding:1rem 1.5rem;background:var(--gold-light);border-radius:var(--r);font-size:13px;}
.blog-crosslink a{color:var(--red);font-weight:700;text-decoration:none;}
.blog-crosslink a:hover{text-decoration:underline;}

.genre-index-list{max-width:1140px;margin:2rem auto;padding:0 1.5rem;display:flex;gap:10px;flex-wrap:wrap;}
.genre-index-list a{padding:6px 14px;border-radius:20px;border:1px solid var(--border-2);background:var(--paper-card);font-size:12px;color:var(--ink-2);text-decoration:none;}
.genre-index-list a:hover{background:var(--paper-3);color:var(--ink);}
.genre-index-list a.on{background:var(--ink);border-color:var(--ink);color:#fff;font-weight:700;}

/* 全240作品の静的インデックス(トップページ末尾)。クローラー向けに常に可視で置く */
.all-index{max-width:1140px;margin:2rem auto 0;padding:2rem 1.5rem;border-top:1px solid var(--border);}
.all-index h2{font-family:'Noto Serif JP',serif;font-size:1.1rem;margin-bottom:1rem;color:var(--ink-2);}
.all-index h3{font-size:12.5px;font-weight:700;color:var(--gold);margin:1.25rem 0 .5rem;}
.all-index h3:first-of-type{margin-top:0;}
.all-index ul{list-style:none;columns:2;column-gap:1.5rem;}
.all-index li{font-size:12px;line-height:1.9;break-inside:avoid;}
.all-index a{color:var(--ink-2);text-decoration:none;}
.all-index a:hover{color:var(--red);text-decoration:underline;}

@media(max-width:640px){
  .all-index ul{columns:1;}
}

/* ✨ スマートフォン・タブレット表示用（完全レスポンシブ：画面内折り返し最適化版） */
@media(max-width:980px) {
  .nav-inner { flex-direction: column; align-items: stretch; gap: 0.5rem; }
  .btn-filter-toggle { display: flex; }
  .filter-groups {
    display: none; width: 100%; flex-direction: column; align-items: flex-start;
    gap: 1rem; background: rgba(0,0,0,0.02); padding: 14px 12px; border-radius: 4px; margin-top: 4px;
  }
  .filter-groups.open { display: flex; }

  /* 💡 横並びグリッドを廃止し、縦並びに変更して横幅の圧迫を解消 */
  .filter-group { display: flex; flex-direction: column; align-items: flex-start; width: 100%; gap: 6px; }
  .filter-label { font-size: 11px; color: var(--gold); font-weight: 700; margin-bottom: 2px; }

  /* 💡 横スクロール(nowrap)を完全廃止し、wrap(画面内自動折り返し)にアップグレード */
  .chips { flex-wrap: wrap; gap: 6px; width: 100%; overflow-x: visible; padding-bottom: 0; }
  .chip { padding: 5px 12px; font-size: 11px; border-radius: 4px; }
}

@media(max-width:640px){
  header{padding:2.5rem 0 2rem 0;}
  .hdr-inner,.nav-inner,.main{padding-left:1rem;padding-right:1rem}
  .book-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  h1{font-size:1.5rem}
  .card-body,.card-foot{padding:0.75rem;}
}