:root {
  --paper:     #faf6ec;
  --paper-2:   #f4eede;
  --paper-deep:#ece4ca;
  --ink:       #1a1612;
  --ink-2:     #3a342c;
  --ink-3:     #6b6258;
  --rule:      #5a4f40;
  --rule-soft: #a89c87;
  --oxblood:   #6e2020;
  --oxblood-2: #8f3030;
  --gold:      #8a6f3b;
  --serif:     'EB Garamond', 'Cormorant Garamond', Georgia, serif;
  --display:   'Cormorant Garamond', 'EB Garamond', Georgia, serif;
  --smallcaps: 'Cormorant SC', 'EB Garamond', serif;
  --jp:        'Shippori Mincho B1', 'Yu Mincho', 'YuMincho', 'Hiragino Mincho ProN', serif;
}

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

body {
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse at 18% 10%, rgba(110, 90, 60, 0.045) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 88%, rgba(110, 32, 32, 0.025) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, transparent 70%, rgba(60, 50, 35, 0.035) 100%);
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.7;
  font-size: 20px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  overflow-x: hidden;
}

/* paper grain overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0.08 0 0 0 0 0.06 0 0 0 0 0.04 0 0 0 0.22 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.22;
  mix-blend-mode: multiply;
  z-index: 1;
}

/* aged edge vignette */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at center,
    transparent 55%,
    rgba(80, 60, 35, 0.05) 92%,
    rgba(60, 40, 20, 0.1) 100%);
  z-index: 1;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 2.5rem;
  position: relative;
  z-index: 2;
}

/* ═══════════ HERO ═══════════ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 3.5rem 0 5rem;
  position: relative;
  text-align: center;
}

/* Hero image — main visual */
.hero-figure {
  width: 100%;
  max-width: 620px;
  margin: 0 auto 3rem;
}
.hero-image-frame {
  position: relative;
  padding: 14px;
  background: rgba(255, 250, 235, 0.35);
}
.hero-image-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid var(--rule);
  pointer-events: none;
}
.hero-image-frame::after {
  content: '';
  position: absolute;
  inset: 7px;
  border: 1px solid var(--rule);
  opacity: 0.35;
  pointer-events: none;
}
.hero-image-frame img {
  display: block;
  width: 100%;
  height: auto;
  filter: sepia(0.04) contrast(0.98);
}

/* Identity title block */
.hero-identity {
  max-width: 680px;
  padding: 0 1rem;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.6rem;
}
.hero-eyebrow .rule {
  display: inline-block;
  width: 38px;
  height: 1px;
  background: var(--rule);
}
.hero-eyebrow .eyebrow-text {
  font-family: var(--smallcaps);
  font-size: 0.82rem;
  letter-spacing: 0.4em;
  color: var(--ink-3);
  text-transform: uppercase;
}

.hero-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.95rem;
  margin-bottom: 2rem;
  line-height: 1;
}
.hero-title .jp {
  font-family: var(--jp);
  font-size: clamp(2rem, 5.4vw, 3.2rem);
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--ink);
  padding-left: 0.18em;
  line-height: 1.2;
}
.hero-title .jp .name-gap {
  display: inline-block;
  width: 0.5em;
}

/* HERO sub-elements: author / orcid / domains */
.hero-divider {
  width: 1px;
  height: 48px;
  background: var(--rule);
  margin: 2rem auto 1.8rem;
  opacity: 0.55;
}

.hero-author-line {
  font-family: var(--smallcaps);
  font-size: 1.35rem;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin-bottom: 1.3rem;
}

.hero-orcid {
  display: inline-flex;
  align-items: center;
  gap: 0.65em;
  font-family: var(--display);
  font-style: italic;
  font-size: 1.22rem;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  text-decoration: none;
  padding: 0.4em 1em;
  border: 1px solid transparent;
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}
.hero-orcid svg {
  width: 22px;
  height: 22px;
  color: #A6CE39;
  flex-shrink: 0;
}
.hero-orcid:hover {
  color: var(--oxblood);
  border-color: var(--rule-soft);
  background: rgba(110, 32, 32, 0.04);
}

.hero-domains {
  font-family: var(--display);
  font-style: italic;
  font-size: clamp(1.1rem, 1.9vw, 1.32rem);
  letter-spacing: 0.06em;
  color: var(--ink-3);
  line-height: 1.9;
  max-width: 640px;
  margin: 0 auto;
}
.hero-domains em {
  font-style: italic;
  display: inline-block;
}
.hero-domains .dot-sep {
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--rule-soft);
  border-radius: 50%;
  margin: 0 1.1em;
  vertical-align: middle;
  transform: translateY(-3px);
}



}

/* ═══════════ ABOUT THE SERIES ═══════════ */
.about {
  padding: 7rem 0 5rem;
  position: relative;
}
.about-mark {
  text-align: center;
  color: var(--rule-soft);
  font-size: 1.1rem;
  letter-spacing: 0.6em;
  margin-bottom: 4rem;
}

.about-head {
  text-align: center;
  margin-bottom: 3.5rem;
}
.about-head .roman {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.2rem;
  letter-spacing: 0.4em;
  color: var(--ink-3);
}
.about-head .title-jp {
  margin-top: 0.5rem;
  font-family: var(--jp);
  font-size: 2.1rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  color: var(--ink);
  padding-left: 0.28em;
}
.about-head .title-en {
  margin-top: 0.5rem;
  font-family: var(--display);
  font-style: italic;
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}
.about-head .rule {
  margin: 1.6rem auto 0;
  width: 80px;
  height: 1px;
  background: var(--rule);
  position: relative;
}
.about-head .rule::before,
.about-head .rule::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 4px;
  height: 4px;
  background: var(--rule);
  border-radius: 50%;
  transform: translateY(-50%);
}
.about-head .rule::before { left: -10px; }
.about-head .rule::after  { right: -10px; }

.about-body {
  max-width: 620px;
  margin: 0 auto;
  text-align: justify;
  font-family: var(--jp);
  font-size: 1.18rem;
  line-height: 2.15;
  color: var(--ink-2);
}
.about-body p { text-indent: 1em; }
.about-body p + p { margin-top: 1.4rem; }
.about-body .first { text-indent: 0; }
.about-body .first::first-letter {
  font-family: var(--display);
  font-style: italic;
  font-size: 4rem;
  float: left;
  line-height: 0.92;
  padding: 0.05em 0.14em 0 0;
  color: var(--oxblood);
}

/* Series stratification map */
.series-map {
  max-width: 720px;
  margin: 5rem auto 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 2.2rem 0 1rem;
  position: relative;
}
.series-map-eyebrow {
  font-family: var(--smallcaps);
  font-size: 0.84rem;
  letter-spacing: 0.36em;
  text-align: center;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-bottom: 1.8rem;
}
.map-row {
  display: grid;
  grid-template-columns: 50px 1fr auto 110px;
  align-items: baseline;
  gap: 1.5rem;
  padding: 1rem 0.5rem;
  border-top: 1px dotted var(--rule-soft);
  text-decoration: none;
  color: inherit;
  transition: background 0.22s;
}
.map-row:first-of-type { border-top: 0; }
.map-row:hover { background: rgba(110, 32, 32, 0.05); }
.map-row .vol {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.65rem;
  color: var(--oxblood);
  text-align: center;
  letter-spacing: 0.02em;
}
.map-row .name {
  font-family: var(--jp);
  font-size: 1.18rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--ink);
}
.map-row .role {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  text-align: right;
}
.map-row .state {
  font-family: var(--smallcaps);
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  color: var(--ink-3);
  text-align: right;
}
.map-row.is-published .state { color: var(--oxblood); }
.map-row.is-draft .state     { color: var(--gold); }
.map-row.is-forthcoming      { opacity: 0.72; }
.map-row.is-forthcoming .vol { color: var(--ink-3); }
.map-row.is-forthcoming .name { color: var(--ink-3); }

/* Decorative section divider used between major regions */
.ornament {
  text-align: center;
  margin: 5rem auto;
  color: var(--rule-soft);
  font-size: 1.1rem;
  letter-spacing: 0.6em;
}

/* ═══════════ SECTION HEAD ═══════════ */
.section-head {
  text-align: center;
  margin: 7rem 0 4rem;
}
.section-head .roman {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.2rem;
  letter-spacing: 0.4em;
  color: var(--ink-3);
}
.section-head .title {
  margin-top: 0.5rem;
  font-family: var(--jp);
  font-size: 2.15rem;
  font-weight: 500;
  letter-spacing: 0.28em;
  color: var(--ink);
  padding-left: 0.28em;
}
.section-head .subtitle {
  margin-top: 0.6rem;
  font-family: var(--display);
  font-style: italic;
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}
.section-head .rule-block {
  margin: 1.6rem auto 0;
  width: 80px;
  height: 1px;
  background: var(--rule);
  position: relative;
}
.section-head .rule-block::before,
.section-head .rule-block::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 4px;
  height: 4px;
  background: var(--rule);
  border-radius: 50%;
  transform: translateY(-50%);
}
.section-head .rule-block::before { left: -10px; }
.section-head .rule-block::after  { right: -10px; }

/* ═══════════ VOLUMES (paper list) ═══════════ */
.volumes {
  margin-top: 2rem;
}

.volume {
  position: relative;
  padding: 3.5rem 0 3.5rem;
  border-top: 1px solid var(--rule-soft);
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 2.2rem;
  align-items: start;
}
.volume:last-of-type { border-bottom: 1px solid var(--rule-soft); }

.volume .vol-mark {
  text-align: center;
  padding-top: 0.3rem;
}
.volume .vol-roman {
  font-family: var(--display);
  font-style: italic;
  font-size: 3.2rem;
  font-weight: 400;
  color: var(--oxblood);
  line-height: 1;
  letter-spacing: 0.02em;
}
.volume .vol-jp {
  margin-top: 0.7rem;
  font-family: var(--jp);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  padding-left: 0.22em;
  color: var(--ink);
  line-height: 1.3;
}
.volume .vol-label {
  margin-top: 0.45rem;
  font-family: var(--smallcaps);
  font-size: 0.62rem;
  letter-spacing: 0.3em;
  color: var(--ink-3);
  font-style: italic;
}
.volume.is-forthcoming .vol-jp {
  color: var(--ink-3);
  font-weight: 500;
}

.volume .vol-body {
  min-width: 0;
}
.volume .vol-status {
  display: inline-block;
  font-family: var(--smallcaps);
  font-size: 0.82rem;
  letter-spacing: 0.3em;
  padding: 0.4em 1em;
  border: 1px solid var(--rule);
  color: var(--ink-2);
  background: rgba(255, 250, 235, 0.4);
  margin-bottom: 1.1rem;
}
.volume .vol-status.published {
  border-color: var(--oxblood);
  color: var(--oxblood);
  background: rgba(110, 32, 32, 0.06);
}
.volume .vol-status.draft {
  border-color: var(--gold);
  color: var(--gold);
  background: rgba(138, 111, 59, 0.06);
}
.volume .vol-status.forthcoming {
  border-color: var(--ink-3);
  color: var(--ink-3);
  background: transparent;
  border-style: dashed;
}

.volume .vol-title-jp {
  font-family: var(--jp);
  font-size: 1.8rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--ink);
  line-height: 1.45;
  margin-bottom: 0.55rem;
}
.volume .vol-title-en {
  font-family: var(--display);
  font-style: italic;
  font-weight: 400;
  font-size: 1.22rem;
  letter-spacing: 0.03em;
  color: var(--ink-2);
  line-height: 1.45;
  margin-bottom: 1.2rem;
}
.volume .vol-meta {
  font-family: var(--smallcaps);
  font-size: 0.86rem;
  letter-spacing: 0.24em;
  color: var(--ink-3);
  margin-bottom: 1.4rem;
}
.volume .vol-meta .sep {
  margin: 0 0.7em;
  opacity: 0.5;
}

.volume .vol-abstract {
  font-family: var(--jp);
  font-size: 1.08rem;
  line-height: 2;
  color: var(--ink-2);
  text-align: justify;
  margin-bottom: 1.6rem;
}
.volume .vol-abstract .en {
  display: block;
  font-family: var(--display);
  font-style: italic;
  font-size: 1.02rem;
  line-height: 1.7;
  color: var(--ink-3);
  margin-top: 0.9rem;
  padding-top: 0.9rem;
  border-top: 1px dotted var(--rule-soft);
}

/* ── Keywords (キーワード) ── */
.vol-keywords {
  margin: 0 0 1.4rem;
  padding: 0.6rem 0.95rem;
  border-left: 2px solid var(--rule-soft);
  background: rgba(255, 250, 235, 0.3);
  color: var(--ink-2);
}
.vol-keywords .kw-row {
  font-family: var(--jp);
  font-size: 0.88rem;
  line-height: 1.55;
}
.vol-keywords .kw-row + .kw-row {
  margin-top: 0.4rem;
  padding-top: 0.4rem;
  border-top: 1px dotted var(--rule-soft);
}
.vol-keywords .kw-row.en {
  font-family: var(--display);
  font-style: italic;
  font-size: 0.84rem;
  color: var(--ink-3);
  line-height: 1.5;
}
.vol-keywords .kw-label {
  display: inline-block;
  font-family: var(--smallcaps);
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-right: 0.7em;
  font-style: italic;
  vertical-align: 0.05em;
}
.vol-keywords .kw-list {
  letter-spacing: 0.03em;
}
.vol-keywords .kw-row.en .kw-list {
  letter-spacing: 0.015em;
}
.vol-keywords .kw-sep {
  color: var(--rule-soft);
  margin: 0 0.3em;
}
.vol-keywords em {
  font-family: var(--display);
  font-style: italic;
  letter-spacing: 0.02em;
}

/* ── How to Cite (引用形式) ── */
.vol-cite {
  margin: 0 0 1.8rem;
  border: 1px solid var(--rule-soft);
  background: rgba(255, 250, 235, 0.4);
}
.vol-cite > summary {
  cursor: pointer;
  padding: 0.85rem 1.15rem;
  font-family: var(--smallcaps);
  font-size: 0.78rem;
  letter-spacing: 0.32em;
  color: var(--ink-2);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  text-transform: uppercase;
  transition: color 0.2s ease;
}
.vol-cite > summary::-webkit-details-marker { display: none; }
.vol-cite > summary::after {
  content: '＋';
  font-family: var(--display);
  font-size: 0.95rem;
  color: var(--ink-3);
  letter-spacing: 0;
  font-style: normal;
}
.vol-cite[open] > summary::after { content: '−'; }
.vol-cite > summary:hover { color: var(--oxblood); }
.vol-cite > summary:hover::after { color: var(--oxblood); }
.vol-cite .cite-body {
  padding: 0.3rem 1.15rem 1.1rem;
  border-top: 1px dotted var(--rule-soft);
}
.vol-cite .cite-row { margin-top: 1.05rem; }
.vol-cite .cite-fmt {
  font-family: var(--smallcaps);
  font-size: 0.68rem;
  letter-spacing: 0.32em;
  color: var(--ink-3);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  font-style: italic;
}
.vol-cite .cite-text {
  font-family: var(--serif);
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--ink-2);
  word-break: break-word;
}
.vol-cite .cite-text em {
  font-family: var(--display);
  font-style: italic;
}
.vol-cite .cite-text.code {
  font-family: 'SF Mono', Menlo, Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.65;
  background: rgba(60, 50, 35, 0.06);
  padding: 0.9rem 1.05rem;
  white-space: pre-wrap;
  display: block;
  color: var(--ink);
  border-left: 2px solid var(--rule-soft);
}

.vol-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.4rem;
  align-items: center;
}

/* Force exact height match across all action buttons */
.vol-actions > .vol-link,
.vol-actions > .vol-link-group {
  height: 2.6rem;
}

/* Grouped PDF buttons: "PDF" label + JP | EN buttons side-by-side */
.vol-link-group {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--ink-2);
  background: rgba(255, 250, 235, 0.4);
}
.vol-link-group .group-label {
  display: inline-flex;
  align-items: center;
  padding: 0 1em;
  font-family: var(--smallcaps);
  font-size: 0.86rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-2);
  background: rgba(60, 50, 35, 0.06);
  border-right: 1px solid var(--ink-2);
  flex-shrink: 0;
}
.vol-link-group .vol-link.compact {
  display: inline-flex;
  align-items: center;
  border: 0;
  background: transparent;
  padding: 0 1em;
  font-family: var(--jp);
  font-size: 0.86rem;
  letter-spacing: 0.18em;
  color: var(--ink);
  height: 100%;
}
.vol-link-group .vol-link.compact + .vol-link.compact {
  border-left: 1px dotted var(--rule-soft);
}
.vol-link-group .vol-link.compact:hover {
  background: var(--ink);
  color: var(--paper);
}
.vol-link-group .vol-link.compact.primary {
  background: var(--oxblood);
  color: var(--paper);
}
.vol-link-group .vol-link.compact.primary:hover {
  background: var(--ink);
}
.vol-link-group .vol-link.compact.disabled {
  opacity: 0.4;
  pointer-events: none;
  color: var(--ink-3);
  font-style: italic;
  background: transparent;
}
.vol-link {
  font-family: var(--smallcaps);
  font-size: 0.86rem;
  letter-spacing: 0.24em;
  color: var(--ink);
  text-decoration: none;
  padding: 0 1.3em;
  border: 1px solid var(--ink-2);
  background: rgba(255, 250, 235, 0.4);
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
}
.vol-link:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.vol-link.primary {
  background: var(--oxblood);
  color: var(--paper);
  border-color: var(--oxblood);
}
.vol-link.primary:hover {
  background: var(--ink);
  border-color: var(--ink);
}
.vol-link.disabled {
  opacity: 0.45;
  pointer-events: none;
  border-style: dashed;
}
.vol-link svg {
  width: 11px;
  height: 11px;
}

/* forthcoming volumes ─ slimmer */
.volume.is-forthcoming {
  opacity: 0.78;
}
.volume.is-forthcoming .vol-roman {
  color: var(--ink-3);
}

/* ── Formal identifier plate ── */
.vol-identifier {
  margin: 1.3rem 0 1.6rem;
  padding: 1rem 1.2rem;
  border: 1px solid var(--rule);
  background: rgba(255, 250, 235, 0.45);
  position: relative;
  font-family: var(--smallcaps);
  letter-spacing: 0.16em;
}
.vol-identifier::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  left: 0;
  width: 3px;
  background: var(--oxblood);
}
.vol-identifier .id-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.18em 0;
  gap: 1rem;
  flex-wrap: wrap;
}
.vol-identifier .id-row + .id-row {
  border-top: 1px dotted var(--rule-soft);
  margin-top: 0.18em;
  padding-top: 0.45em;
}
.vol-identifier .id-key {
  font-size: 0.82rem;
  letter-spacing: 0.32em;
  color: var(--ink-3);
  text-transform: uppercase;
  flex-shrink: 0;
}
.vol-identifier .id-val {
  font-family: 'EB Garamond', monospace;
  font-style: italic;
  font-size: 1.15rem;
  letter-spacing: 0.03em;
  color: var(--ink);
  font-weight: 500;
  text-align: right;
  word-break: break-all;
}
.vol-identifier .id-val.code {
  font-family: 'Cormorant SC', 'EB Garamond', monospace;
  font-style: normal;
  font-size: 1.05rem;
  letter-spacing: 0.14em;
}
.vol-identifier .id-val a {
  color: var(--oxblood);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.vol-identifier .id-val a:hover {
  border-bottom-color: var(--oxblood);
}
.vol-identifier.is-draft::before {
  background: var(--gold);
}
.vol-identifier.is-forthcoming::before {
  background: var(--ink-3);
}

/* Read-on-mobile / 閲覧版 button distinct treatment */
.vol-link.read {
  background: rgba(110, 32, 32, 0.05);
  border-color: var(--oxblood);
  color: var(--oxblood);
}
.vol-link.read:hover {
  background: var(--oxblood);
  color: var(--paper);
  border-color: var(--oxblood);
}

/* ═══════════ AUTHOR / COLOPHON ═══════════ */
.colophon {
  margin-top: 7rem;
  padding: 4rem 0 3rem;
  border-top: 1px solid var(--rule);
  text-align: center;
}
.colophon-heading {
  font-family: var(--smallcaps);
  font-size: 0.86rem;
  letter-spacing: 0.36em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-bottom: 2rem;
}

/* Contact card — clean key/value rows, replaces the old verbose colophon */
.contact-card {
  max-width: 460px;
  margin: 0 auto;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.contact-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.1rem 1.4rem;
  text-decoration: none;
  color: inherit;
  transition: background 0.2s;
  border-top: 1px dotted var(--rule-soft);
}
.contact-row:first-of-type { border-top: 0; }
.contact-row:hover { background: rgba(110, 32, 32, 0.05); }
.contact-row:hover .contact-val { color: var(--oxblood); }

.contact-key {
  font-family: var(--smallcaps);
  font-size: 0.82rem;
  letter-spacing: 0.32em;
  color: var(--ink-3);
  text-transform: uppercase;
  flex-shrink: 0;
}
.contact-val {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-align: right;
  word-break: break-all;
  transition: color 0.2s;
}

/* ═══════════ FOOTER ═══════════ */
.footer-rule {
  margin: 4rem auto 0;
  text-align: center;
  color: var(--rule-soft);
  font-size: 1rem;
  letter-spacing: 0.6em;
}
.footer {
  padding: 2.5rem 0 4rem;
  text-align: center;
  font-family: var(--display);
  font-style: italic;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  line-height: 1.8;
}
.footer .line {
  display: inline;
}
.footer .footer-sep {
  margin: 0 0.7em;
  opacity: 0.5;
  font-style: normal;
}
.footer a {
  color: var(--ink-3);
  text-decoration: none;
  border-bottom: 1px dotted var(--rule-soft);
  transition: color 0.2s, border-color 0.2s;
}
.footer a:hover { color: var(--oxblood); border-bottom-color: var(--oxblood); }

/* ═══════════ FADE-IN ═══════════ */
.fade-in {
  opacity: 0;
  transform: translateY(8px);
  animation: rise 1.4s cubic-bezier(0.2, 0.65, 0.3, 1) forwards;
}
.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.35s; }
.delay-3 { animation-delay: 0.55s; }
.delay-4 { animation-delay: 0.75s; }
.delay-5 { animation-delay: 0.95s; }
.delay-6 { animation-delay: 1.15s; }
@keyframes rise {
  to { opacity: 1; transform: translateY(0); }
}

/* ═══════════ RESPONSIVE ═══════════ */
@media (max-width: 720px) {
  body { font-size: 17px; line-height: 1.65; }
  .wrap { padding: 0 1.5rem; }

  .hero {
    min-height: auto;
    padding: 2.5rem 0 4.5rem;
  }
  .hero-figure { max-width: 92vw; margin-bottom: 2.2rem; }
  .hero-image-frame { padding: 8px; }
  .hero-image-frame::after { inset: 4px; }

  .hero-eyebrow .rule { width: 24px; }
  .hero-eyebrow .eyebrow-text { font-size: 0.7rem; letter-spacing: 0.28em; }
  .hero-eyebrow { gap: 0.6rem; margin-bottom: 1.2rem; }

  .hero-title { gap: 0.7rem; margin-bottom: 1.4rem; }
  .hero-title .jp {
    letter-spacing: 0.12em;
    padding-left: 0.12em;
  }

  .hero-divider { height: 36px; margin: 1.4rem auto 1.2rem; }
  .hero-author-line { font-size: 1.1rem; letter-spacing: 0.32em; margin-bottom: 1rem; }
  .hero-orcid { font-size: 1.05rem; letter-spacing: 0.1em; padding: 0.35em 0.8em; }
  .hero-orcid svg { width: 18px; height: 18px; }
  .hero-domains { font-size: 1.1rem; line-height: 2; padding: 0 0.5rem; }
  .hero-domains .dot-sep { margin: 0 0.6em; }
  

  
  
  

  

  

  .about { padding: 4rem 0 3rem; }
  .about-mark { margin-bottom: 2.5rem; }
  .about-head { margin-bottom: 2.5rem; }
  .about-head .title-jp {
    font-size: 1.4rem;
    letter-spacing: 0.22em;
    padding-left: 0.22em;
  }
  .about-body {
    font-size: 1.05rem;
    line-height: 2;
  }
  .about-body .first::first-letter { font-size: 3.2rem; }

  .series-map { margin-top: 3.5rem; padding: 1.8rem 0 0.8rem; }
  .map-row {
    grid-template-columns: 40px 1fr;
    grid-template-rows: auto auto auto;
    gap: 0.3rem 1rem;
    padding: 1rem 0.4rem;
  }
  .map-row .vol { grid-row: 1 / 4; align-self: center; font-size: 1.5rem; }
  .map-row .name { grid-column: 2; font-size: 1.05rem; }
  .map-row .role { grid-column: 2; text-align: left; font-size: 0.95rem; }
  .map-row .state { grid-column: 2; text-align: left; font-size: 0.72rem; }

  .ornament { margin: 3.5rem auto; font-size: 0.95rem; }

  .section-head { margin: 5rem 0 3rem; }
  .section-head .title {
    font-size: 1.4rem;
    letter-spacing: 0.22em;
    padding-left: 0.22em;
  }

  .volume {
    grid-template-columns: 1fr;
    gap: 1.2rem;
    padding: 2.8rem 0;
  }
  .volume .vol-mark {
    text-align: left;
    display: flex;
    align-items: baseline;
    gap: 1rem;
  }
  .volume .vol-roman { font-size: 2.4rem; }
  .volume .vol-label { margin-top: 0; font-size: 0.6rem; }
  .volume .vol-title-jp { font-size: 1.45rem; letter-spacing: 0.08em; }
  .volume .vol-title-en { font-size: 1.1rem; }
  .volume .vol-abstract { font-size: 1rem; line-height: 1.9; }
  .vol-actions { gap: 0.55rem; }
  .vol-link {
    font-size: 0.78rem;
    padding: 0.55em 1.05em;
    letter-spacing: 0.18em;
  }

  .vol-identifier { padding: 0.95rem 1.1rem; }
  .vol-identifier .id-row { gap: 0.5rem; }
  .vol-identifier .id-key { font-size: 0.72rem; letter-spacing: 0.26em; }
  .vol-identifier .id-val { font-size: 1.02rem; }
  .vol-identifier .id-val.code { font-size: 0.95rem; }

  .colophon { padding: 3rem 0 2rem; margin-top: 5rem; }
  .contact-card { max-width: 100%; }
  .contact-row { padding: 0.95rem 1rem; gap: 0.8rem; }
  .contact-key { font-size: 0.72rem; letter-spacing: 0.24em; }
  .contact-val { font-size: 0.98rem; }
  .footer { font-size: 0.85rem; padding: 2rem 0 3rem; }
  .footer .footer-sep { display: block; margin: 0.2rem 0; height: 0; visibility: hidden; }
}

@media (max-width: 420px) {
  .hero-image-frame { padding: 6px; }
  .hero-image-frame::after { inset: 3px; }
  .hero-title .jp { letter-spacing: 0.08em; padding-left: 0.08em; }
  .hero-eyebrow .rule { width: 18px; }
  .hero-domains em { display: block; margin: 0.15em 0; }
  .hero-domains .dot-sep { display: none; }
}

/* Print */
@media print {
  body { background: white; color: black; }
  body::before, body::after { display: none; }
  .vol-link, 
}