/* ============================================
   株式会社木内印刷 — 雑誌・冊子骨格
   表紙 → 目次 → 章立て → 奥付（コロフォン）
   ============================================ */

:root {
  --ink: #1a1a1a;
  --ink-soft: #3a3a3a;
  --paper: #f1eadc;     /* 古い紙の色 */
  --paper-deep: #e4d9bf;
  --paper-pale: #faf6ec;
  --brass: #b89461;     /* 活版印刷の真鍮 */
  --vermilion: #a83a2b; /* 印章の朱（章番号用） */
  --rule: #c7bda5;
  --text: #1a1a1a;
  --text-muted: #5a5a5a;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans JP", "Hiragino Sans", sans-serif;
  color: var(--text);
  background: var(--paper);
  line-height: 1.95;
  font-size: 16px;
  letter-spacing: 0.025em;
  -webkit-font-smoothing: antialiased;
  /* 紙のテクスチャ風グラデーション */
  background-image:
    radial-gradient(at 20% 30%, rgba(241, 234, 220, 1) 0%, transparent 50%),
    radial-gradient(at 80% 70%, rgba(228, 217, 191, 0.4) 0%, transparent 50%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ============================================
   Magazine Header（雑誌の発行情報）
   ============================================ */

.mag-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--paper);
  border-bottom: 2px double var(--ink);
  padding: 14px 40px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  font-family: "Crimson Pro", "BIZ UDPMincho", serif;
}

.mag-vol {
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--vermilion);
}

.mag-brand {
  font-family: "Crimson Pro", serif;
  font-size: 18px;
  letter-spacing: 0.3em;
  font-weight: 500;
  text-align: center;
}

.mag-brand .jp {
  display: block;
  font-family: "BIZ UDPMincho", serif;
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-top: 2px;
  font-style: normal;
}

.mag-nav {
  display: flex;
  justify-content: flex-end;
  gap: 24px;
  font-family: "BIZ UDPMincho", serif;
  font-size: 13px;
  letter-spacing: 0.18em;
}

.mag-nav a {
  color: var(--ink);
  position: relative;
  padding: 4px 0;
  transition: color 0.2s ease;
}

.mag-nav a.active { color: var(--vermilion); }
.mag-nav a:hover { color: var(--vermilion); }

/* ============================================
   COVER（雑誌の表紙）
   ============================================ */

.cover {
  min-height: 100vh;
  padding: 130px 60px 80px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  position: relative;
  background:
    repeating-linear-gradient(0deg,
      transparent 0px, transparent 38px,
      rgba(26, 26, 26, 0.04) 38px, rgba(26, 26, 26, 0.04) 39px);
}

.cover-top {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: start;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--ink);
}

.cover-issue {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--vermilion);
  text-transform: uppercase;
}

.cover-date {
  font-family: "Crimson Pro", serif;
  text-align: right;
  font-size: 14px;
  letter-spacing: 0.15em;
  color: var(--ink-soft);
}

.cover-main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px 0;
}

.cover-en {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 16px;
  letter-spacing: 0.3em;
  color: var(--vermilion);
  margin-bottom: 28px;
}

.cover-title {
  font-family: "BIZ UDPMincho", "Noto Serif JP", serif;
  font-weight: 500;
  font-size: clamp(56px, 9vw, 130px);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--ink);
  margin-bottom: 40px;
}

.cover-title-small {
  font-family: "Crimson Pro", serif;
  font-size: clamp(28px, 4vw, 48px);
  font-style: italic;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  margin-bottom: 60px;
  font-weight: 400;
}

.cover-tagline {
  font-family: "BIZ UDPMincho", serif;
  font-size: 18px;
  line-height: 2.2;
  color: var(--ink);
  max-width: 660px;
  letter-spacing: 0.05em;
}

.cover-tagline em {
  font-style: normal;
  color: var(--vermilion);
  font-weight: 700;
}

.cover-foot {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  padding-top: 40px;
  border-top: 1px solid var(--ink);
  font-family: "Crimson Pro", serif;
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--ink-soft);
}

.cover-foot div span {
  display: block;
  font-style: italic;
  color: var(--vermilion);
  font-size: 11px;
  margin-bottom: 4px;
}

.cover-foot .right { text-align: right; }

/* ============================================
   INDEX（目次）
   ============================================ */

.index-section {
  padding: 120px 60px;
  background: var(--paper-pale);
  border-top: 1px solid var(--ink);
}

.index-inner {
  max-width: 980px;
  margin: 0 auto;
}

.index-eyebrow {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--vermilion);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.index-title {
  font-family: "BIZ UDPMincho", serif;
  font-weight: 500;
  font-size: clamp(40px, 5.4vw, 64px);
  letter-spacing: 0.06em;
  margin-bottom: 80px;
  border-bottom: 4px double var(--ink);
  padding-bottom: 24px;
}

.index-list {
  list-style: none;
}

.index-item {
  display: grid;
  grid-template-columns: 80px 1fr auto 60px;
  align-items: baseline;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px dotted var(--rule);
  transition: padding-left 0.3s ease;
}

.index-item:hover {
  padding-left: 16px;
}

.index-num {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 24px;
  color: var(--vermilion);
  letter-spacing: 0.1em;
}

.index-ja {
  font-family: "BIZ UDPMincho", serif;
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.05em;
}

.index-en {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: 0.15em;
}

.index-page {
  font-family: "Crimson Pro", serif;
  font-size: 14px;
  color: var(--text-muted);
  text-align: right;
  letter-spacing: 0.1em;
}

/* ============================================
   CHAPTER（章ごとのセクション）
   ============================================ */

.chapter {
  padding: 140px 60px;
  position: relative;
  border-top: 1px solid var(--rule);
}

.chapter-paper { background: var(--paper); }
.chapter-light { background: var(--paper-pale); }
.chapter-dark { background: var(--ink); color: var(--paper); border-top-color: var(--ink); }

.chapter-inner {
  max-width: 980px;
  margin: 0 auto;
}

.chapter-mark {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 30px;
  align-items: end;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 22px;
  margin-bottom: 60px;
}

.chapter-dark .chapter-mark {
  border-bottom-color: var(--brass);
}

.chapter-num {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: clamp(56px, 8vw, 100px);
  line-height: 0.9;
  color: var(--vermilion);
  font-weight: 400;
}

.chapter-dark .chapter-num { color: var(--brass); }

.chapter-titles {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-bottom: 10px;
}

.chapter-en {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 14px;
  color: var(--vermilion);
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.chapter-dark .chapter-en { color: var(--brass); }

.chapter-ja {
  font-family: "BIZ UDPMincho", serif;
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.05em;
  line-height: 1.4;
}

.chapter-dark .chapter-ja { color: var(--paper); }

/* ============================================
   Body content（雑誌本文風）
   ============================================ */

.body-columns {
  column-count: 2;
  column-gap: 60px;
  column-rule: 1px solid var(--rule);
  font-family: "BIZ UDPMincho", serif;
  font-size: 16px;
  line-height: 2.1;
  letter-spacing: 0.04em;
}

.body-columns p {
  margin-bottom: 1.4em;
  text-align: justify;
}

.body-columns p:first-of-type::first-letter {
  font-family: "Crimson Pro", serif;
  font-size: 4em;
  float: left;
  line-height: 0.9;
  padding: 6px 12px 0 0;
  color: var(--vermilion);
  font-weight: 500;
}

.lead-quote {
  font-family: "BIZ UDPMincho", serif;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1.8;
  font-weight: 500;
  color: var(--ink);
  margin: 60px 0 80px;
  padding: 40px 0;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  letter-spacing: 0.04em;
  text-align: center;
}

.lead-quote em {
  font-style: normal;
  color: var(--vermilion);
}

.chapter-dark .lead-quote {
  color: var(--paper);
  border-color: var(--brass);
}

.chapter-dark .lead-quote em {
  color: var(--brass);
}

/* ============================================
   Year Marker（年表マーカー）
   ============================================ */

.year-list {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 50px;
  position: relative;
}

.year-list::before {
  content: "";
  position: absolute;
  left: 200px;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--rule);
}

.year-row {
  display: contents;
}

.year-label {
  font-family: "Crimson Pro", serif;
  font-size: 28px;
  font-style: italic;
  color: var(--vermilion);
  letter-spacing: 0.1em;
  text-align: right;
  padding-bottom: 36px;
  border-bottom: 1px dotted var(--rule);
}

.chapter-dark .year-label { color: var(--brass); }

.year-body {
  padding-bottom: 36px;
  border-bottom: 1px dotted var(--rule);
  padding-left: 40px;
  position: relative;
}

.year-body::before {
  content: "●";
  position: absolute;
  left: -8px;
  top: 0;
  color: var(--vermilion);
  font-size: 14px;
  background: var(--paper);
  padding: 0 4px;
}

.chapter-paper .year-body::before { background: var(--paper); }
.chapter-light .year-body::before { background: var(--paper-pale); }
.chapter-dark .year-body::before { background: var(--ink); color: var(--brass); }

.year-body h4 {
  font-family: "BIZ UDPMincho", serif;
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}

.year-body p {
  font-family: "BIZ UDPMincho", serif;
  font-size: 15px;
  line-height: 2;
  color: var(--text-muted);
}

.chapter-dark .year-body p { color: rgba(241, 234, 220, 0.75); }

/* ============================================
   Catalog Grid（印刷物カタログ風）
   ============================================ */

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
}

.catalog-cell {
  padding: 50px 30px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  position: relative;
}

.catalog-cell:nth-child(3n) { border-right: none; }
.catalog-cell:nth-last-child(-n+3) { border-bottom: none; }

.catalog-num {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 20px;
  color: var(--vermilion);
  letter-spacing: 0.1em;
  margin-bottom: 24px;
}

.chapter-dark .catalog-num { color: var(--brass); }

.catalog-cell h4 {
  font-family: "BIZ UDPMincho", serif;
  font-size: 21px;
  font-weight: 500;
  margin-bottom: 18px;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.catalog-cell p {
  font-family: "BIZ UDPMincho", serif;
  font-size: 14px;
  line-height: 2;
  color: var(--text-muted);
}

.chapter-dark .catalog-cell p { color: rgba(241, 234, 220, 0.75); }
.chapter-dark .catalog-cell { border-color: rgba(184, 148, 97, 0.3); }

/* ============================================
   Info Block（縦書き or 横書き混在）
   ============================================ */

.info-block {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  padding: 20px 0;
  border-bottom: 1px dotted var(--rule);
  align-items: baseline;
}

.info-block:last-child { border-bottom: none; }

.info-key {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 14px;
  color: var(--vermilion);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.info-val {
  font-family: "BIZ UDPMincho", serif;
  font-size: 16px;
  letter-spacing: 0.04em;
  line-height: 2;
}

/* ============================================
   Pull Quote（記事中の引用ブロック）
   ============================================ */

.pull-quote {
  margin: 80px 0;
  text-align: center;
  font-family: "BIZ UDPMincho", serif;
}

.pull-quote-mark {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 60px;
  color: var(--vermilion);
  line-height: 1;
  margin-bottom: 20px;
}

.pull-quote-text {
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.9;
  font-weight: 500;
  letter-spacing: 0.04em;
  max-width: 720px;
  margin: 0 auto 28px;
}

.pull-quote-attrib {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 13px;
  color: var(--text-muted);
  letter-spacing: 0.2em;
}

/* ============================================
   Inquiry CTA（雑誌の挟み込み広告風）
   ============================================ */

.inquiry-card {
  background: var(--ink);
  color: var(--paper);
  padding: 80px 60px;
  position: relative;
  max-width: 980px;
  margin: 0 auto;
}

.inquiry-card::before {
  content: "";
  position: absolute;
  top: 8px; left: 8px;
  right: -8px; bottom: -8px;
  border: 1px solid var(--ink);
  z-index: -1;
}

.inquiry-eyebrow {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--brass);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.inquiry-title {
  font-family: "BIZ UDPMincho", serif;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 28px;
  line-height: 1.5;
}

.inquiry-body {
  font-family: "BIZ UDPMincho", serif;
  font-size: 16px;
  line-height: 2.1;
  margin-bottom: 40px;
  max-width: 680px;
  color: rgba(241, 234, 220, 0.85);
}

.inquiry-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  border-top: 1px solid rgba(184, 148, 97, 0.3);
  padding-top: 32px;
}

.inquiry-actions a {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 14px;
  color: var(--brass);
  letter-spacing: 0.15em;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--brass);
  transition: color 0.25s ease, border-color 0.25s ease;
}

.inquiry-actions a strong {
  display: block;
  font-style: normal;
  font-family: "BIZ UDPMincho", serif;
  font-size: 22px;
  color: var(--paper);
  letter-spacing: 0.06em;
  margin-top: 8px;
}

.inquiry-actions a:hover {
  color: var(--paper);
  border-color: var(--paper);
}

/* ============================================
   COLOPHON（書籍奥付風フッター）
   ============================================ */

.colophon {
  background: var(--ink);
  color: var(--paper);
  padding: 100px 60px 40px;
  border-top: 4px double var(--brass);
}

.colophon-inner {
  max-width: 980px;
  margin: 0 auto;
}

.colophon-mark {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--brass);
  text-align: center;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.colophon-title {
  font-family: "BIZ UDPMincho", serif;
  font-size: 26px;
  font-weight: 500;
  text-align: center;
  letter-spacing: 0.08em;
  padding-bottom: 32px;
  margin-bottom: 50px;
  border-bottom: 1px solid var(--brass);
}

.colophon-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px 80px;
  font-family: "BIZ UDPMincho", serif;
  font-size: 14px;
  line-height: 2;
}

.colophon-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 20px;
  border-bottom: 1px dotted rgba(184, 148, 97, 0.3);
  padding: 12px 0;
}

.colophon-row dt {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 12px;
  color: var(--brass);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.colophon-foot {
  margin-top: 60px;
  padding-top: 30px;
  border-top: 1px dotted rgba(184, 148, 97, 0.3);
  font-family: "Crimson Pro", serif;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: rgba(241, 234, 220, 0.6);
  text-align: center;
  text-transform: uppercase;
}

/* ============================================
   Inline Pages (sub pages) common
   ============================================ */

.subpage-cover {
  padding: 200px 60px 80px;
  background: var(--paper);
  border-bottom: 1px solid var(--ink);
}

.subpage-cover-inner { max-width: 980px; margin: 0 auto; }

.subpage-en {
  font-family: "Crimson Pro", serif;
  font-style: italic;
  font-size: 16px;
  letter-spacing: 0.3em;
  color: var(--vermilion);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.subpage-title {
  font-family: "BIZ UDPMincho", serif;
  font-size: clamp(40px, 5.4vw, 68px);
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1.3;
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 900px) {
  .mag-header { padding: 12px 20px; grid-template-columns: 1fr; gap: 6px; text-align: center; }
  .mag-nav { display: none; }
  .cover { padding: 120px 24px 60px; }
  .cover-top, .cover-foot { grid-template-columns: 1fr; gap: 12px; }
  .cover-date, .cover-foot .right { text-align: left; }
  .index-section, .chapter { padding: 80px 24px; }
  .index-item { grid-template-columns: 50px 1fr; }
  .index-en, .index-page { display: none; }
  .body-columns { column-count: 1; }
  .year-list { grid-template-columns: 1fr; gap: 0; }
  .year-list::before { display: none; }
  .year-label { text-align: left; padding-bottom: 10px; border-bottom: none; font-size: 22px; }
  .year-body { padding-left: 0; padding-bottom: 40px; }
  .year-body::before { display: none; }
  .catalog-grid { grid-template-columns: 1fr; }
  .catalog-cell { border-right: none; }
  .catalog-cell:nth-last-child(-n+3) { border-bottom: 1px solid var(--rule); }
  .catalog-cell:last-child { border-bottom: none; }
  .chapter-mark { grid-template-columns: 1fr; gap: 8px; }
  .info-block { grid-template-columns: 1fr; gap: 6px; }
  .inquiry-card { padding: 50px 28px; }
  .inquiry-actions { grid-template-columns: 1fr; gap: 24px; }
  .colophon { padding: 60px 24px 40px; }
  .colophon-grid { grid-template-columns: 1fr; gap: 0; }
  .subpage-cover { padding: 130px 24px 60px; }
}