/* ==========================================================================
   哲学の本棚 — book.themodel.be
   哲学者の本棚シリーズ共通のデザイン言語を継承:
   明朝体 / 生成り #fdfdfa / 藍 #1a4a7a / ヘアライン罫線 / 行間1.9
   拡張: CTA用の琥珀 #b45309(コントラストAA)
   ========================================================================== */

:root {
  color-scheme: light;
  --bg: #fdfdfa;
  --ink: #222;
  --ink-soft: #444;
  --meta: #777;
  --meta-light: #888;
  --line: #ccc;
  --line-soft: #ddd;
  --line-faint: #e8e8e2;
  --indigo: #1a4a7a;
  --indigo-deep: #143a61;
  --indigo-wash: #f2f5f8;
  --amber: #b45309;
  --amber-deep: #92400e;
  --amber-wash: #faf6ee;
  --gold: #9a7b2d;
  --measure: 46rem;
  --wide: 62rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "Noto Serif JP", serif;
  margin: 0;
  line-height: 1.9;
  color: var(--ink);
  background: var(--bg);
  font-feature-settings: "palt";
}

a { color: var(--indigo); }
a:hover { color: var(--indigo-deep); }

img, svg { max-width: 100%; height: auto; }

.wrap { max-width: var(--measure); margin: 0 auto; padding: 0 1.2rem; }
.wrap-wide { max-width: var(--wide); margin: 0 auto; padding: 0 1.2rem; }

/* ---- PR表記(景表法ステマ規制対応: ファーストビュー・埋没させない) ---- */
.pr-note {
  font-size: .78rem;
  color: var(--meta);
  border-bottom: 1px solid var(--line-faint);
  padding: .35rem 0;
  text-align: center;
  letter-spacing: .05em;
  background: #faf9f4;
}

/* ---- ヘッダー ---- */
header.site {
  border-bottom: 1px solid var(--line);
  padding: 1.4rem 0 .8rem;
  margin-bottom: 0;
}
header.site .brand-row { display: flex; align-items: baseline; gap: .8em; flex-wrap: wrap; }
header.site h1, header.site .brand {
  font-size: 1.35rem;
  margin: 0 0 .1rem;
  font-weight: 600;
  letter-spacing: .06em;
}
header.site h1 a, header.site .brand a { text-decoration: none; color: var(--ink); }
header.site .tagline { font-size: .8rem; color: var(--meta); letter-spacing: .04em; }
header.site nav { font-size: .85rem; margin-top: .5rem; line-height: 2.1; }
header.site nav a { margin-right: 1em; white-space: nowrap; }

/* ---- ヒーロー ---- */
.hero { padding: 3rem 0 2.2rem; border-bottom: 1px solid var(--line-faint); }
.hero .kicker {
  font-size: .8rem; color: var(--gold); letter-spacing: .35em; margin: 0 0 1rem;
}
.hero h2 {
  font-size: clamp(1.5rem, 4.6vw, 2.1rem);
  font-weight: 600; letter-spacing: .05em;
  line-height: 1.6; margin: 0 0 1.2rem;
}
.hero p.lead { color: var(--ink-soft); margin: 0 0 .6rem; }
.hero .hero-note { font-size: .82rem; color: var(--meta); }

/* ---- セクション共通 ---- */
section.block { padding: 2.8rem 0 1rem; }
h2.cat {
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: .3em; margin: 0 0 1.4em;
  font-size: 1.25rem; font-weight: 600; letter-spacing: .08em;
}
h2.cat .en {
  font-size: .68rem; color: var(--gold); letter-spacing: .3em;
  margin-left: 1em; font-weight: 400; vertical-align: .15em;
}
.section-lede { color: var(--ink-soft); margin: -0.6em 0 1.6em; font-size: .95rem; }

/* ---- ランキング ---- */
ol.ranking { list-style: none; padding: 0; margin: 0; counter-reset: rank; }
.rank-card {
  display: grid;
  grid-template-columns: auto 108px 1fr;
  gap: 1.3rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line-faint);
  align-items: start;
}
.rank-card:last-child { border-bottom: none; }
.rank-no {
  font-size: 1.9rem; line-height: 1.2;
  color: var(--line); font-style: italic;
  min-width: 1.6em; text-align: center;
  font-family: Georgia, "Times New Roman", serif;
}
.rank-card.rank-1 { grid-template-columns: auto 150px 1fr; background: var(--amber-wash); margin: 0 -1rem; padding: 1.8rem 1rem; border: 1px solid #eadfc8; border-radius: 2px; }
.rank-card.rank-1 .rank-no { color: var(--amber); }
.rank-cover a { display: block; line-height: 0; }
.rank-cover img, .rank-cover svg { border: 1px solid var(--line-faint); box-shadow: 2px 3px 8px rgba(34,34,34,.08); }
.rank-body h3 { margin: 0 0 .2rem; font-size: 1.12rem; line-height: 1.55; font-weight: 600; }
.rank-card.rank-1 .rank-body h3 { font-size: 1.28rem; }
.rank-body h3 a { text-decoration: none; }
.rank-body h3 a:hover { text-decoration: underline; }
.rank-meta { font-size: .8rem; color: var(--meta); margin: 0 0 .55rem; }
.rank-body p.desc { margin: .3rem 0 .8rem; font-size: .93rem; color: var(--ink-soft); }
.badge {
  display: inline-block; font-size: .72rem; letter-spacing: .1em;
  padding: .1em .7em; border-radius: 2px; margin-right: .5em; vertical-align: .12em;
}
.badge-first { background: var(--amber); color: #fff; }
.badge-level { border: 1px solid var(--line); color: var(--meta); }
.badge-level.lv1 { border-color: #9db8a5; color: #4c705a; }
.badge-level.lv2 { border-color: #a3a3c2; color: #52527a; }
.badge-level.lv3 { border-color: #b99; color: #855; }
.badge-ku { border: 1px solid var(--gold); color: var(--gold); }

/* ---- CTAボタン ---- */
.cta-row { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; margin: .4rem 0 .2rem; }
.micro { font-size: .74rem; color: var(--meta); margin: .4rem 0 .15rem; letter-spacing: .02em; }
.btn {
  display: inline-block;
  font-family: inherit;
  text-decoration: none;
  padding: .5em 1.5em;
  border-radius: 3px;
  font-size: .92rem;
  letter-spacing: .1em;
  line-height: 1.7;
  transition: background .15s ease, color .15s ease;
}
.btn-amazon { background: var(--amber); color: #fff; border: 1px solid var(--amber); }
.btn-amazon:hover { background: var(--amber-deep); border-color: var(--amber-deep); color: #fff; }
.btn-kindle { background: transparent; color: var(--indigo); border: 1px solid var(--indigo); }
.btn-kindle:hover { background: var(--indigo); color: #fff; }
.btn-quiet { background: transparent; color: var(--meta); border: 1px solid var(--line); font-size: .84rem; }
.btn-quiet:hover { color: var(--indigo); border-color: var(--indigo); }
.price-note { font-size: .74rem; color: var(--meta-light); }

/* ---- 比較表 ---- */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 0 1rem; }
table.compare {
  border-collapse: collapse; width: 100%; min-width: 720px;
  font-size: .88rem; line-height: 1.7;
}
table.compare caption { text-align: left; font-size: .8rem; color: var(--meta); margin-bottom: .6em; }
table.compare th, table.compare td {
  border-top: 1px solid var(--line-faint);
  border-bottom: 1px solid var(--line-faint);
  padding: .7em .8em; text-align: left; vertical-align: top;
}
table.compare thead th {
  border-top: none; border-bottom: 1px solid var(--line);
  font-size: .78rem; color: var(--meta); font-weight: 600; letter-spacing: .08em;
  white-space: nowrap;
}
table.compare td.book-title { font-weight: 600; min-width: 11em; }
table.compare td.book-title .yaku { display: block; font-weight: 400; font-size: .76rem; color: var(--meta); }
table.compare tr.hl { background: var(--amber-wash); }
table.compare a.mini-link { font-size: .82rem; white-space: nowrap; }

/* ---- 読む順番ロードマップ ---- */
.roadmap { margin: 1.5rem 0; padding: 0; list-style: none; position: relative; }
.roadmap::before {
  content: ""; position: absolute; left: .62rem; top: .8rem; bottom: .8rem;
  width: 1px; background: var(--line-soft);
}
.roadmap li { position: relative; padding: 0 0 1.9rem 2.2rem; }
.roadmap li:last-child { padding-bottom: .2rem; }
.roadmap li::before {
  content: ""; position: absolute; left: .32rem; top: .62em;
  width: .62rem; height: .62rem; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--indigo);
}
.roadmap li.step-goal::before { background: var(--indigo); }
.roadmap .step-label {
  font-size: .74rem; letter-spacing: .25em; color: var(--gold); display: block;
}
.roadmap h3 { margin: .1rem 0 .3rem; font-size: 1.05rem; font-weight: 600; }
.roadmap p { margin: 0 0 .5rem; font-size: .92rem; color: var(--ink-soft); }

/* ---- 引用 ---- */
blockquote {
  border-left: 3px solid var(--line);
  margin: 1.6em 0; padding: .2em 0 .2em 1.1em;
  color: var(--ink-soft);
}
blockquote p { margin: 0 0 .4em; }
blockquote cite, .quote-src {
  display: block; font-style: normal; font-size: .78rem; color: var(--meta);
  margin-top: .4em;
}

/* ---- KUバンド ---- */
.ku-band {
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--gold);
  background: #fbfaf5;
  padding: 1.3rem 1.5rem;
  margin: 2.5rem 0;
  border-radius: 2px;
}
.ku-band h3 { margin: 0 0 .4rem; font-size: 1.02rem; letter-spacing: .05em; }
.ku-band p { margin: 0 0 .8rem; font-size: .9rem; color: var(--ink-soft); }

/* ---- 書評ページ ---- */
article.review { padding: 2.6rem 0 1rem; }
article.review .crumb { font-size: .78rem; color: var(--meta); margin-bottom: 1.6rem; }
article.review h1.title { font-size: clamp(1.35rem, 4vw, 1.7rem); line-height: 1.6; font-weight: 600; margin: 0 0 .4rem; letter-spacing: .04em; }
article.review .verdict {
  border: 1px solid var(--line-soft); border-radius: 2px;
  padding: 1rem 1.3rem; margin: 1.6rem 0; background: #fbfbf7;
  font-size: .94rem;
}
article.review .verdict .stars { color: var(--amber); letter-spacing: .18em; font-size: 1.02rem; }
article.review .verdict .score { color: var(--meta); font-size: .84rem; margin-left: .6em; }
.book-head {
  display: grid; grid-template-columns: 168px 1fr; gap: 1.8rem;
  margin: 2rem 0; align-items: start;
}
.book-head .cover img, .book-head .cover svg { border: 1px solid var(--line-faint); box-shadow: 3px 4px 10px rgba(34,34,34,.09); }
.biblio { font-size: .86rem; color: var(--ink-soft); }
.biblio dl { margin: 0 0 1rem; display: grid; grid-template-columns: 5.5em 1fr; row-gap: .12em; }
.biblio dt { color: var(--meta); }
.biblio dd { margin: 0; }
article.review h2 {
  font-size: 1.18rem; font-weight: 600; letter-spacing: .06em;
  border-bottom: 1px solid var(--line-soft); padding-bottom: .3em;
  margin: 2.6em 0 1em;
}
article.review h3 { font-size: 1.02rem; font-weight: 600; margin: 1.8em 0 .6em; }
.exp-note {
  font-size: .86rem; color: var(--ink-soft);
  border: 1px dashed var(--line); border-radius: 2px;
  padding: .8rem 1.1rem; margin: 1.4rem 0;
}
.exp-note .exp-label { font-size: .72rem; letter-spacing: .2em; color: var(--gold); display: block; margin-bottom: .2em; }

/* ---- 次に読む ---- */
.next-book {
  border-top: 1px solid var(--line-faint);
  margin-top: 3rem; padding-top: 1.6rem;
}
.next-book .nb-label { font-size: .74rem; letter-spacing: .25em; color: var(--gold); }
.next-book p { margin: .4rem 0 .8rem; font-size: .95rem; }

/* ---- 目次 ---- */
nav.toc-box {
  border: 1px solid var(--line-faint); border-radius: 2px;
  padding: 1rem 1.4rem; margin: 1.8rem 0; font-size: .88rem; background: #fcfcf8;
}
nav.toc-box .toc-label { font-size: .74rem; letter-spacing: .25em; color: var(--meta); }
nav.toc-box ol { margin: .4em 0 0; padding-left: 1.4em; }
nav.toc-box li { margin: .18em 0; }

/* ---- フッター ---- */
footer.site {
  margin-top: 4.5rem; border-top: 1px solid var(--line);
  padding: 1.6rem 0 3rem; font-size: .8rem; color: var(--meta-light);
}
footer.site .disclosure {
  color: var(--ink-soft); font-size: .82rem; margin-bottom: .8rem;
}
footer.site nav { margin-bottom: .8rem; }
footer.site nav a { margin-right: 1em; color: var(--meta); }
footer.site .copy { font-size: .76rem; }

/* ---- 演出(控えめ) ---- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(8px); transition: opacity .6s ease, transform .6s ease; }
  .reveal.is-in { opacity: 1; transform: none; }
}

/* ---- レスポンシブ ---- */
@media (max-width: 640px) {
  .rank-card { grid-template-columns: auto 84px 1fr; gap: .9rem; }
  .rank-card.rank-1 { grid-template-columns: auto 110px 1fr; }
  .book-head { grid-template-columns: 128px 1fr; gap: 1.1rem; }
  .biblio dl { grid-template-columns: 5em 1fr; }
  .hero { padding: 2.2rem 0 1.8rem; }
}
@media (max-width: 430px) {
  .rank-card { grid-template-columns: auto 72px 1fr; }
  .rank-card.rank-1 { grid-template-columns: auto 92px 1fr; }
  .book-head { grid-template-columns: 1fr; }
  .book-head .cover { max-width: 168px; }
  .cta-row .btn { width: 100%; text-align: center; }
}

@media print {
  .pr-note, .cta-row, .ku-band { display: none; }
}