/* ============================================================
   次世代エネルギー実現性データベース
   — The Star on Earth —
   静かなエディトリアル。墨と生成り、シャンパンゴールド一色。
   ============================================================ */
:root {
  /* 墨 */
  --ink: #1b1712;
  --ink-2: #221d17;
  --ink-3: #2a241c;
  --ink-line: rgba(201, 169, 97, 0.18);
  --ink-line-strong: rgba(201, 169, 97, 0.38);
  --ink-text: #e8e0d0;
  --ink-text-dim: #a89a82;
  --ink-text-faint: #7a6f5c;

  /* 生成り（和紙） */
  --cream: #f4efe4;
  --cream-2: #ece5d5;
  --cream-line: rgba(60, 48, 30, 0.16);
  --cream-line-strong: rgba(60, 48, 30, 0.34);
  --cream-text: #2b241a;
  --cream-text-dim: #6b6152;
  --cream-text-faint: #948a78;

  /* シャンパンゴールド */
  --gold: #c9a961;
  --gold-deep: #a5854a;
  --gold-pale: #e6d5ae;

  /* 事実区分（くすんだ色・光らせない） */
  --vs-demonstrated: #6f7d52;      /* 深い緑金 */
  --vs-demonstrated-ink: #97a673;
  --vs-goal: #a8813d;              /* 琥珀 */
  --vs-goal-ink: #c9a55e;
  --vs-claim: #8b8378;             /* 灰 */
  --vs-claim-ink: #9c948a;

  --serif-en: "Cormorant Garamond", "Times New Roman", Georgia, serif;
  --serif-ja: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", "MS PMincho", serif;
  --sans: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--ink);
  color: var(--ink-text);
  font-family: var(--serif-ja);
  font-size: 15.5px;
  line-height: 2.0;
  letter-spacing: 0.05em;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--gold); }
ul, ol { padding-left: 1.5em; }
.num, time { font-variant-numeric: oldstyle-nums; }
button { font-family: inherit; }
::selection { background: rgba(201, 169, 97, 0.28); }
img { max-width: 100%; display: block; }

h1, h2, h3, h4 { font-family: var(--serif-ja); font-weight: 500; line-height: 1.55; letter-spacing: 0.09em; }

/* ============================================================
   基本語彙 — アイブロウ / 見出し / 罫
   ============================================================ */
.eyebrow {
  font-family: var(--serif-en);
  font-style: italic;
  font-weight: 400;
  font-size: 1.02rem;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin-bottom: 1.1rem;
}
.sec-head { margin-bottom: 2.6rem; }
.sec-head h2 {
  font-size: clamp(1.55rem, 3.4vw, 2.15rem);
  font-weight: 500;
  letter-spacing: 0.14em;
}
.sec-head .sec-sub {
  margin-top: 1rem;
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  max-width: 46em;
}
.band--ink .sec-sub, .band--ink2 .sec-sub { color: var(--ink-text-dim); }
.band--cream .sec-sub, .band--cream2 .sec-sub { color: var(--cream-text-dim); }

.footnote {
  font-family: var(--sans);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  line-height: 1.9;
}
.band--ink .footnote, .band--ink2 .footnote { color: var(--ink-text-faint); }
.band--cream .footnote, .band--cream2 .footnote { color: var(--cream-text-faint); }

.hairline { border: 0; height: 1px; margin: 0; }
.band--ink .hairline, .band--ink2 .hairline { background: var(--ink-line); }
.band--cream .hairline, .band--cream2 .hairline { background: var(--cream-line); }

/* スモールキャップスCTA */
.cta {
  display: inline-block;
  font-family: var(--serif-en);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  padding: 0.85em 0.4em 0.85em 0.8em;
  border-bottom: 1px solid var(--ink-line-strong);
  transition: color 0.3s, border-color 0.3s;
}
.cta:hover { color: var(--gold); border-color: var(--gold); }
.band--cream .cta, .band--cream2 .cta { border-color: var(--cream-line-strong); }

/* ============================================================
   バンド（墨と生成りのリズム）
   ============================================================ */
main { flex: 1; width: 100%; outline: none; }
.band { width: 100%; }
.band--ink { background: var(--ink); color: var(--ink-text); }
.band--ink2 { background: var(--ink-2); color: var(--ink-text); }
.band--cream { background: var(--cream); color: var(--cream-text); }
.band--cream2 { background: var(--cream-2); color: var(--cream-text); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 5.5rem 2rem; }
.wrap--tight { padding-top: 3.2rem; padding-bottom: 3.2rem; }
.wrap--wide { max-width: 1280px; }

/* ============================================================
   ヘッダー
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 2rem;
  padding: 0 2rem;
  background: rgba(27, 23, 18, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ink-line);
}
.brand { display: flex; align-items: center; gap: 0.8rem; padding: 0.85rem 0; white-space: nowrap; }
.brand-mark {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--gold);
  flex: none;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.35; }
.brand-en {
  font-family: var(--serif-en); font-style: italic;
  font-size: 0.72rem; letter-spacing: 0.18em; color: var(--gold);
}
.brand-ja { font-size: 0.82rem; letter-spacing: 0.16em; color: var(--ink-text); }

.site-nav { display: flex; gap: 0.2rem; overflow-x: auto; scrollbar-width: none; flex: 1; justify-content: flex-end; }
.site-nav::-webkit-scrollbar { display: none; }
.site-nav a {
  font-family: var(--sans);
  color: var(--ink-text-dim); font-size: 0.74rem; letter-spacing: 0.14em;
  padding: 1.15rem 0.7rem; white-space: nowrap;
  border-bottom: 1px solid transparent;
  transition: color 0.25s;
}
.site-nav a:hover { color: var(--ink-text); }
.site-nav a[aria-current="page"] { color: var(--gold); border-bottom-color: var(--gold); }

/* ============================================================
   ローディング
   ============================================================ */
.loading { display: flex; flex-direction: column; align-items: center; gap: 1.4rem; padding: 9rem 0; color: var(--ink-text-faint); font-size: 0.85rem; letter-spacing: 0.3em; }
.loading-sun {
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--gold);
  animation: breathe 2.6s ease-in-out infinite;
}
@keyframes breathe { 0%, 100% { opacity: 0.35; } 50% { opacity: 1; } }

/* ============================================================
   ヒーロー（人工の太陽）
   ============================================================ */
.hero {
  position: relative; overflow: hidden;
  background: var(--ink);
  min-height: min(88vh, 780px);
  display: flex; align-items: center; justify-content: center;
  text-align: center;
}
#hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-inner { position: relative; z-index: 1; max-width: 820px; padding: 0 1.5rem 24vh; }
.hero .eyebrow { font-size: 1.1rem; margin-bottom: 1.6rem; }
.hero h1 {
  font-size: clamp(2rem, 7vw, 4.4rem);
  font-weight: 500;
  letter-spacing: 0.22em;
  text-indent: 0.22em;
  color: #f2ead8;
}
.hero .sub {
  margin-top: 2rem;
  font-size: clamp(0.9rem, 1.6vw, 1.02rem);
  letter-spacing: 0.14em;
  color: var(--ink-text-dim);
}
.hero-explore {
  position: absolute; z-index: 1;
  left: 50%; transform: translateX(-50%);
  bottom: 2.2rem;
  display: flex; flex-direction: column; align-items: center; gap: 0.7rem;
  font-family: var(--serif-en);
  font-size: 0.7rem; letter-spacing: 0.5em; text-transform: uppercase;
  color: var(--ink-text-faint);
}
.hero-explore::after {
  content: ""; width: 1px; height: 42px;
  background: linear-gradient(180deg, var(--gold), transparent);
  animation: sink 3s ease-in-out infinite;
}
@keyframes sink { 0%, 100% { opacity: 0.35; } 50% { opacity: 1; } }

/* ============================================================
   統計帯
   ============================================================ */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2rem; text-align: center; }
.stat { display: block; }
.stat-value {
  display: block;
  font-family: var(--serif-en);
  font-weight: 400;
  font-size: clamp(3rem, 7vw, 4.6rem);
  line-height: 1.1;
  color: var(--cream-text);
  font-variant-numeric: oldstyle-nums;
  transition: color 0.3s;
}
.stat:hover .stat-value { color: var(--gold-deep); }
.stat-label { display: block; font-size: 0.82rem; letter-spacing: 0.28em; margin-top: 0.5rem; color: var(--cream-text-dim); }
.stats-note { text-align: center; margin-top: 2.6rem; }

/* ============================================================
   実証の記録 — 縦タイムライン
   ============================================================ */
.record-line { list-style: none; padding: 0; position: relative; max-width: 720px; margin: 0 auto; }
.record-line::before {
  content: ""; position: absolute; left: 3px; top: 8px; bottom: 8px; width: 1px;
  background: linear-gradient(180deg, transparent, var(--ink-line-strong) 8%, var(--ink-line-strong) 92%, transparent);
}
.record-line li { position: relative; padding: 0 0 2.6rem 2.4rem; }
.record-line li:last-child { padding-bottom: 0; }
.record-line li::before {
  content: ""; position: absolute; left: 0; top: 0.72em;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 10px rgba(201, 169, 97, 0.55);
}
.record-year {
  font-family: var(--serif-en);
  font-size: 1.7rem; font-weight: 400;
  color: var(--gold);
  line-height: 1.2;
  font-variant-numeric: oldstyle-nums;
}
.record-title { font-size: 1.02rem; letter-spacing: 0.1em; margin-top: 0.25rem; }
.record-title a:hover { color: var(--gold); }
.record-sub { font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.1em; color: var(--ink-text-faint); margin-top: 0.35rem; }
.record-sub .badge { margin-left: 0.6em; }

/* ============================================================
   八つの方式 — 製図カード
   ============================================================ */
.paths-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(245px, 1fr)); gap: 1.4rem; }
.path-card {
  display: block;
  background: var(--ink);
  border: 1px solid var(--cream-line);
  transition: border-color 0.3s;
}
.path-card:hover { border-color: var(--gold-deep); color: inherit; }
.path-card figure { margin: 0; padding: 1.1rem 1.1rem 0.4rem; }
.path-card .fd { width: 100%; height: auto; display: block; }
.path-card .path-name {
  padding: 0.3rem 1.2rem 0.15rem;
  font-size: 1.05rem; letter-spacing: 0.16em;
  color: var(--ink-text);
}
.path-card .path-line {
  padding: 0 1.2rem 1.2rem;
  font-family: var(--sans);
  font-size: 0.7rem; letter-spacing: 0.12em;
  color: var(--ink-text-faint);
}
.path-card:hover .path-name { color: var(--gold-pale); }

/* 方式図アニメーション（ゆっくり流れる磁力線のみ） */
.fd-line { stroke-dasharray: 5 7; animation: fdFlow 16s linear infinite; }
.fd-line-slow { stroke-dasharray: 4 8; animation: fdFlow 26s linear infinite reverse; }
@keyframes fdFlow { to { stroke-dashoffset: -120; } }
@media (prefers-reduced-motion: reduce) {
  .fd-line, .fd-line-slow { animation: none; }
}
.fd-fig { margin: 0; }
.fd-note {
  font-family: var(--sans); font-size: 0.64rem; letter-spacing: 0.2em;
  color: var(--ink-text-faint); text-align: right; padding: 0.2rem 0.4rem;
}

/* ============================================================
   写真セクション（全幅シネマティック）
   ============================================================ */
.photo-band { position: relative; background: var(--ink); }
.photo-band figure { position: relative; margin: 0; }
.photo-band img { width: 100%; max-height: 78vh; object-fit: cover; }
.photo-band figure::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0; height: 46%;
  background: linear-gradient(to top, rgba(14, 11, 7, 0.82), rgba(14, 11, 7, 0.38) 55%, transparent);
  pointer-events: none;
}
.photo-caption {
  position: absolute; left: 2.2rem; bottom: 1.6rem; right: 2.2rem;
  z-index: 1;
  color: #efe8d8;
  text-shadow: 0 1px 14px rgba(0, 0, 0, 0.75);
}

/* アーカイブ額装表示 — 低解像度の記録写真を引き伸ばさない */
figure.archival { overflow: hidden; }
figure.archival::after { content: none; }
.archival-bg {
  position: absolute; inset: -40px;
  background-size: cover; background-position: center;
  filter: blur(34px) brightness(0.42) saturate(0.85);
  transform: scale(1.15);
}
.archival-inner {
  position: relative; z-index: 1;
  max-width: min(720px, calc(100% - 3rem));
  margin: 0 auto; padding: 4.5rem 0 3.6rem;
}
.archival-inner img {
  width: 100%;
  border: 1px solid rgba(201, 169, 97, 0.28);
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.55);
}
.archival-caption {
  display: block; margin-top: 1.3rem; text-align: center;
  color: #efe8d8;
}
.archival-caption .cap {
  font-family: var(--serif-en); font-style: italic;
  font-size: 1rem; letter-spacing: 0.06em; display: block;
}
.archival-caption .cap-ja {
  font-family: var(--serif-ja); font-style: normal;
  font-size: 0.88rem; letter-spacing: 0.1em; display: block; margin-top: 0.35rem;
  color: rgba(239, 232, 216, 0.85);
}
.archival-caption .credit {
  display: block; margin-top: 0.55rem;
  font-family: var(--sans); font-size: 0.64rem; letter-spacing: 0.14em;
  color: rgba(232, 224, 208, 0.6);
}
.photo-caption .cap {
  font-family: var(--serif-en); font-style: italic;
  font-size: 1rem; letter-spacing: 0.06em;
}
.photo-caption .cap-ja { font-size: 0.9rem; letter-spacing: 0.1em; font-style: normal; font-family: var(--serif-ja); }
.photo-caption .credit {
  display: block; margin-top: 0.4rem;
  font-family: var(--sans); font-size: 0.64rem; letter-spacing: 0.14em;
  color: rgba(232, 224, 208, 0.75);
}

/* ============================================================
   所蔵インデックス（ホーム下部）
   ============================================================ */
.index-list { list-style: none; padding: 0; max-width: 760px; margin: 0 auto; }
.index-list li { border-bottom: 1px solid var(--ink-line); }
.index-list li:first-child { border-top: 1px solid var(--ink-line); }
.index-list a {
  display: flex; align-items: baseline; gap: 1.4rem;
  padding: 1.3rem 0.4rem;
  transition: padding-left 0.3s, color 0.3s;
}
.index-list a:hover { padding-left: 1.2rem; color: var(--gold-pale); }
.index-count {
  font-family: var(--serif-en); font-size: 1.6rem; font-weight: 400;
  color: var(--gold); min-width: 2.6em; text-align: right;
  font-variant-numeric: oldstyle-nums;
}
.index-name { font-size: 1rem; letter-spacing: 0.18em; }
.index-en {
  margin-left: auto;
  font-family: var(--serif-en); font-style: italic;
  font-size: 0.8rem; letter-spacing: 0.1em; color: var(--ink-text-faint);
}

/* ============================================================
   ページヘッダー（一覧・詳細共通 / 墨バンド）
   ============================================================ */
.page-hero { padding-top: 4.6rem; padding-bottom: 4rem; }
.page-hero h1 {
  font-size: clamp(1.7rem, 4.5vw, 2.6rem);
  font-weight: 500; letter-spacing: 0.16em;
}
.page-hero .lede {
  margin-top: 1.1rem; font-size: 0.92rem; letter-spacing: 0.09em;
  color: var(--ink-text-dim); max-width: 44em;
}
.page-hero .detail-en {
  font-family: var(--serif-en); font-style: italic;
  font-size: 1.05rem; letter-spacing: 0.1em; color: var(--ink-text-faint);
  margin-top: 0.5rem;
}
.crumbs {
  font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.14em;
  color: var(--ink-text-faint); margin-bottom: 1.6rem;
}
.crumbs a:hover { color: var(--gold); }
.detail-meta { display: flex; flex-wrap: wrap; gap: 0.5rem 0.8rem; margin-top: 1.4rem; align-items: center; }
.last-checked { font-family: var(--sans); font-size: 0.66rem; letter-spacing: 0.1em; color: var(--ink-text-faint); }

/* ============================================================
   本文ブロック（生成りバンド内）
   ============================================================ */
section.block { margin: 0 0 3.2rem; }
section.block:last-child { margin-bottom: 0; }
section.block > h2 {
  font-size: 1.06rem; letter-spacing: 0.22em;
  margin-bottom: 1.1rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--cream-line);
}
.band--ink section.block > h2, .band--ink2 section.block > h2 { border-color: var(--ink-line); }
.block p, .block li { font-size: 0.95rem; }
.muted { color: var(--cream-text-dim); }
.band--ink .muted, .band--ink2 .muted { color: var(--ink-text-dim); }
.none { color: var(--cream-text-faint); font-size: 0.8rem; font-family: var(--sans); letter-spacing: 0.08em; }
.band--ink .none, .band--ink2 .none { color: var(--ink-text-faint); }

/* 折りたたみ */
details.fold { border-top: 1px solid var(--cream-line); border-bottom: 1px solid var(--cream-line); margin: 0 0 -1px; }
.band--ink details.fold, .band--ink2 details.fold { border-color: var(--ink-line); }
details.fold summary {
  cursor: pointer; list-style: none;
  display: flex; align-items: center; gap: 0.8rem;
  padding: 1.05rem 0.3rem;
  font-size: 0.92rem; letter-spacing: 0.16em;
  transition: color 0.25s;
}
details.fold summary::-webkit-details-marker { display: none; }
details.fold summary::after {
  content: "＋"; margin-left: auto; font-family: var(--serif-en);
  color: var(--gold); font-size: 1rem; transition: transform 0.3s;
}
details.fold[open] summary::after { content: "－"; }
details.fold summary:hover { color: var(--gold-deep); }
.band--ink details.fold summary:hover, .band--ink2 details.fold summary:hover { color: var(--gold-pale); }
details.fold .fold-body { padding: 0.2rem 0.3rem 1.6rem; }
details.fold .fold-body p, details.fold .fold-body li { font-size: 0.9rem; }
details.fold .fold-body li { margin-bottom: 0.45em; }

/* ============================================================
   カード（一覧）
   ============================================================ */
.grid { display: grid; gap: 1.2rem; }
.grid.cols-2 { grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(auto-fill, minmax(262px, 1fr)); }

.card {
  background: transparent;
  border: 1px solid var(--cream-line);
  padding: 1.5rem 1.5rem 1.3rem;
  display: flex; flex-direction: column; gap: 0.5rem;
  transition: border-color 0.3s, background 0.3s;
}
.band--ink .card, .band--ink2 .card { border-color: var(--ink-line); }
a.card:hover { border-color: var(--gold-deep); background: rgba(201, 169, 97, 0.04); color: inherit; }
.card h3 { font-size: 1.04rem; font-weight: 500; letter-spacing: 0.12em; }
a.card:hover h3 { color: var(--gold-deep); }
.band--ink a.card:hover h3 { color: var(--gold-pale); }
.card .en {
  font-family: var(--serif-en); font-style: italic;
  color: var(--cream-text-faint); font-size: 0.8rem; letter-spacing: 0.08em;
}
.band--ink .card .en, .band--ink2 .card .en { color: var(--ink-text-faint); }
.card .desc { color: var(--cream-text-dim); font-size: 0.82rem; line-height: 1.9; }
.band--ink .card .desc, .band--ink2 .card .desc { color: var(--ink-text-dim); }
.card .meta-row { display: flex; flex-wrap: wrap; gap: 0.45rem; align-items: center; margin-top: auto; padding-top: 0.6rem; }
.card .cico { width: 22px; height: 22px; color: var(--gold-deep); }

/* ============================================================
   バッジ・チップ（静かな事実区分）
   スモールキャップス+髪の毛線アウトライン+くすんだ色
   ============================================================ */
.badge {
  display: inline-flex; align-items: center;
  font-family: var(--sans);
  font-size: 0.6rem; font-weight: 500; letter-spacing: 0.18em;
  padding: 0.24em 0.9em; white-space: nowrap;
  border: 1px solid currentColor;
  border-radius: 2px;
  background: transparent;
  line-height: 1.8;
}
.vs-demonstrated { color: var(--vs-demonstrated); }
.vs-third_party_confirmed { color: var(--vs-demonstrated); opacity: 0.85; }
.vs-published_goal { color: var(--vs-goal); }
.vs-planned { color: var(--vs-claim); }
.vs-company_claim { color: var(--vs-claim); border-style: dashed; }
.band--ink .vs-demonstrated, .band--ink2 .vs-demonstrated,
.band--ink .vs-third_party_confirmed, .band--ink2 .vs-third_party_confirmed { color: var(--vs-demonstrated-ink); }
.band--ink .vs-published_goal, .band--ink2 .vs-published_goal { color: var(--vs-goal-ink); }
.band--ink .vs-planned, .band--ink2 .vs-planned,
.band--ink .vs-company_claim, .band--ink2 .vs-company_claim { color: var(--vs-claim-ink); }

.chip {
  display: inline-flex; align-items: center;
  font-family: var(--sans);
  font-size: 0.62rem; letter-spacing: 0.12em;
  padding: 0.2em 0.75em; white-space: nowrap;
  border: 1px solid var(--cream-line); color: var(--cream-text-dim);
  border-radius: 2px;
}
.band--ink .chip, .band--ink2 .chip { border-color: var(--ink-line); color: var(--ink-text-dim); }
a.chip:hover { border-color: var(--gold-deep); color: var(--gold-deep); }
.band--ink a.chip:hover { border-color: var(--gold); color: var(--gold); }
.conf-high { color: var(--vs-demonstrated); border-color: currentColor; }
.conf-medium { color: var(--vs-goal); border-color: currentColor; }
.conf-low, .conf-unverified { color: var(--vs-claim); border-color: currentColor; }
.band--ink .conf-high, .band--ink2 .conf-high { color: var(--vs-demonstrated-ink); }
.band--ink .conf-medium, .band--ink2 .conf-medium { color: var(--vs-goal-ink); }
.band--ink .conf-low, .band--ink2 .conf-low,
.band--ink .conf-unverified, .band--ink2 .conf-unverified { color: var(--vs-claim-ink); }

.tag {
  display: inline-flex;
  font-family: var(--sans);
  font-size: 0.62rem; letter-spacing: 0.14em;
  padding: 0.2em 0.75em; border-radius: 2px;
  color: var(--cream-text-dim);
  border: 1px solid var(--cream-line);
}
.band--ink .tag, .band--ink2 .tag { color: var(--ink-text-dim); border-color: var(--ink-line); }

.ver-mark { font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.08em; white-space: nowrap; }
.ver-verified_online { color: var(--vs-demonstrated); }
.ver-known_reliable { color: var(--gold-deep); }
.ver-unverified { color: var(--vs-claim); }
.band--ink .ver-verified_online { color: var(--vs-demonstrated-ink); }
.band--ink .ver-known_reliable { color: var(--gold); }
.band--ink .ver-unverified { color: var(--vs-claim-ink); }

/* ============================================================
   フィルタ・検索
   ============================================================ */
.filter-bar { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; margin: 0 0 1.6rem; }
.filter-bar .spacer { flex: 1; }
.fchip {
  background: transparent; border: 1px solid var(--cream-line); color: var(--cream-text-dim);
  padding: 0.34em 1em; font-size: 0.7rem; cursor: pointer;
  font-family: var(--sans); letter-spacing: 0.12em;
  border-radius: 2px;
  transition: all 0.25s;
}
.fchip:hover { border-color: var(--gold-deep); color: var(--gold-deep); }
.fchip[aria-pressed="true"] {
  color: var(--cream); background: var(--cream-text); border-color: var(--cream-text);
}
.band--ink .fchip { border-color: var(--ink-line); color: var(--ink-text-dim); }
.band--ink .fchip[aria-pressed="true"] { color: var(--ink); background: var(--gold); border-color: var(--gold); }
.search-box {
  background: transparent; border: none; border-bottom: 1px solid var(--cream-line-strong);
  color: var(--cream-text);
  padding: 0.45em 0.2em; font-size: 0.85rem; font-family: var(--sans); letter-spacing: 0.08em;
  min-width: 230px; border-radius: 0;
}
.search-box::placeholder { color: var(--cream-text-faint); }
.search-box:focus { outline: none; border-color: var(--gold-deep); }
.band--ink .search-box { color: var(--ink-text); border-color: var(--ink-line-strong); }
.band--ink .search-box::placeholder { color: var(--ink-text-faint); }
.result-count { font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.14em; color: var(--cream-text-faint); }
.band--ink .result-count { color: var(--ink-text-faint); }
p.result-count { margin-bottom: 1.2rem; }

/* ============================================================
   詳細ページ部品
   ============================================================ */
.kv-panel {
  border-top: 1px solid var(--cream-line); border-bottom: 1px solid var(--cream-line);
  padding: 1.2rem 0.3rem; margin: 0 0 3.2rem;
  display: grid; grid-template-columns: max-content 1fr; gap: 0.5rem 2rem;
}
.kv-panel dt { font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.18em; color: var(--cream-text-faint); padding-top: 0.35em; }
.kv-panel dd { margin: 0; font-size: 0.92rem; }
.kv-panel dd a { color: var(--gold-deep); }
.kv-panel dd a:hover { color: var(--gold); }

.link-list { display: flex; flex-wrap: wrap; gap: 0.5rem; list-style: none; padding: 0; }
.link-list a {
  display: inline-block; font-family: var(--sans); font-size: 0.74rem; letter-spacing: 0.1em;
  border: 1px solid var(--cream-line); border-radius: 2px;
  padding: 0.35em 0.9em;
  transition: all 0.25s;
}
.band--ink .link-list a, .band--ink2 .link-list a { border-color: var(--ink-line); }
.link-list a:hover { border-color: var(--gold-deep); color: var(--gold-deep); }
.band--ink .link-list a:hover { border-color: var(--gold); color: var(--gold); }

.rel-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1.2rem; }
.rel-col { border-top: 1px solid var(--cream-line-strong); padding-top: 0.8rem; }
.rel-col h4 {
  font-family: var(--sans); font-size: 0.7rem; font-weight: 500; letter-spacing: 0.16em;
  color: var(--cream-text-dim); margin-bottom: 0.7rem;
}
.rel-col h4 .arrow { color: var(--gold-deep); }
.map-hint { font-family: var(--sans); font-size: 0.72rem; letter-spacing: 0.1em; margin-top: 1.2rem; }
.map-hint a { color: var(--gold-deep); }
.map-hint a:hover { color: var(--gold); }

/* ---------- タイムライン（プロジェクト詳細） ---------- */
.timeline { list-style: none; padding: 0; position: relative; margin-left: 0.3rem; }
.timeline::before {
  content: ""; position: absolute; left: 3px; top: 8px; bottom: 8px; width: 1px;
  background: var(--cream-line-strong);
}
.timeline li { position: relative; padding: 0 0 1.5rem 1.8rem; }
.timeline li::before {
  content: ""; position: absolute; left: 0; top: 0.65em;
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--gold-deep);
}
.timeline.future li::before { background: transparent; border: 1px solid var(--gold-deep); }
.timeline .tl-date {
  font-family: var(--serif-en); font-size: 1.05rem; color: var(--gold-deep);
  margin-right: 0.7rem; font-variant-numeric: oldstyle-nums;
}
.timeline .tl-desc { font-size: 0.9rem; display: block; margin-top: 0.15rem; }
.timeline .badge { vertical-align: 1px; }

/* ---------- 情報源 ---------- */
.src-list { list-style: none; padding: 0; border-top: 1px solid var(--ink-line); }
.src-list li { padding: 0.85rem 0.2rem; border-bottom: 1px solid var(--ink-line); font-size: 0.85rem; }
.src-list .src-title { color: var(--ink-text); }
.src-list .src-title:hover { color: var(--gold); }
.src-list .src-sub { font-family: var(--sans); color: var(--ink-text-faint); font-size: 0.68rem; letter-spacing: 0.06em; margin-top: 0.2rem; }
.src-list .src-sub a { color: var(--ink-text-dim); }
.src-list .src-sub a:hover { color: var(--gold); }

.source-item {
  border-bottom: 1px solid var(--cream-line);
  padding: 1.4rem 0.2rem;
}
.source-item.hl { background: rgba(201, 169, 97, 0.07); }
.source-item h3 { font-size: 0.98rem; font-weight: 500; letter-spacing: 0.06em; }
.source-item h3 a { color: var(--cream-text); }
.source-item h3 a:hover { color: var(--gold-deep); }
.source-item .src-meta { display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; align-items: center; font-family: var(--sans); font-size: 0.7rem; color: var(--cream-text-dim); margin-top: 0.5rem; }
.source-item details { margin-top: 0.6rem; }
.source-item summary { cursor: pointer; color: var(--cream-text-faint); font-family: var(--sans); font-size: 0.7rem; letter-spacing: 0.12em; }
.source-item summary:hover { color: var(--gold-deep); }
.source-item .src-body { font-size: 0.82rem; color: var(--cream-text-dim); padding: 0.6rem 0 0.2rem; }
.source-item .src-body b { color: var(--cream-text); font-weight: 500; }

/* ---------- 比較マトリクス ---------- */
.cmp-wrap {
  overflow: auto; max-height: 76vh;
  border: 1px solid var(--cream-line);
  background: var(--cream);
}
.cmp-table { border-collapse: separate; border-spacing: 0; min-width: 1180px; width: 100%; }
.cmp-table th, .cmp-table td {
  border-bottom: 1px solid var(--cream-line); border-right: 1px solid var(--cream-line);
  padding: 0.7rem 0.75rem; font-size: 0.76rem; vertical-align: top; text-align: left;
  font-family: var(--sans); letter-spacing: 0.04em; line-height: 1.8;
}
.cmp-table thead th {
  position: sticky; top: 0; z-index: 3;
  background: var(--ink); color: var(--ink-text);
  font-family: var(--serif-ja); font-weight: 500;
  font-size: 0.8rem; letter-spacing: 0.1em; white-space: nowrap;
}
.cmp-table thead th:first-child { left: 0; z-index: 4; }
.cmp-table tbody th {
  position: sticky; left: 0; z-index: 2;
  background: var(--cream-2); color: var(--cream-text);
  font-family: var(--serif-ja); font-weight: 500;
  min-width: 150px; max-width: 190px;
}
.cmp-table thead th .en { display: block; font-family: var(--serif-en); font-style: italic; font-size: 0.66rem; color: var(--ink-text-faint); font-weight: 400; letter-spacing: 0.06em; }
.cmp-table td { color: var(--cream-text-dim); min-width: 150px; cursor: pointer; transition: background 0.2s; background: var(--cream); }
.cmp-table td:hover { background: rgba(201, 169, 97, 0.12); color: var(--cream-text); }
.cmp-table td .cell-vs { display: block; margin-top: 0.3rem; }
.cmp-table th button { all: unset; cursor: pointer; color: inherit; font: inherit; }
.cmp-table th button:hover { color: var(--gold); }
.cmp-table tbody th button:hover { color: var(--gold-deep); }
.cmp-hint { font-family: var(--sans); font-size: 0.7rem; letter-spacing: 0.08em; color: var(--cream-text-faint); margin: 0.7rem 0.1rem; }

/* ---------- モーダル ---------- */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(20, 16, 11, 0.82);
  display: flex; align-items: center; justify-content: center; padding: 1.2rem;
}
.modal-backdrop[hidden] { display: none; }
.modal {
  position: relative;
  background: var(--cream); color: var(--cream-text);
  border-top: 2px solid var(--gold);
  max-width: 620px; width: 100%; max-height: 84vh; overflow-y: auto;
  padding: 2rem 2.2rem;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
}
.modal-close {
  position: absolute; top: 0.7rem; right: 1rem;
  background: none; border: none; color: var(--cream-text-dim); font-size: 1.5rem; cursor: pointer;
  line-height: 1;
}
.modal-close:hover { color: var(--cream-text); }
.modal h2 { font-size: 1.12rem; letter-spacing: 0.1em; margin-bottom: 0.3rem; }
.modal h3 {
  font-family: var(--sans); font-size: 0.68rem; font-weight: 500;
  color: var(--cream-text-faint); letter-spacing: 0.22em; margin: 1.4rem 0 0.4rem;
}
.modal p { font-size: 0.88rem; }
.modal .quant { border-left: 2px solid var(--gold); padding: 0.4rem 0 0.4rem 1.1rem; font-size: 0.85rem; }
.modal .quant .qv { font-family: var(--serif-en); font-size: 1.5rem; color: var(--cream-text); font-variant-numeric: oldstyle-nums; }
.modal .quant-sub { margin-top: 0.4rem; color: var(--cream-text-dim); font-family: var(--sans); font-size: 0.72rem; line-height: 1.9; }
.modal .caveat { font-size: 0.8rem; color: var(--vs-goal); }
.modal ul { font-size: 0.82rem; }
.modal a { color: var(--gold-deep); }
.modal a:hover { color: var(--gold); }

/* ---------- 未検証 ---------- */
.unv-fact { display: grid; grid-template-columns: max-content 1fr; gap: 0.35rem 1.6rem; font-size: 0.86rem; margin: 0.8rem 0; }
.unv-fact dt { font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.16em; color: var(--cream-text-faint); padding-top: 0.3em; }
.unv-fact dd { margin: 0; color: var(--cream-text-dim); }
.warn-note { margin-top: 1rem; padding-top: 0.7rem; border-top: 1px solid var(--cream-line); }

/* ============================================================
   依存関係マップ
   ============================================================ */
.map-layout { display: grid; grid-template-columns: 1fr 320px; gap: 1.2rem; }
.map-stage {
  position: relative; border: 1px solid var(--ink-line);
  background: radial-gradient(760px 480px at 50% 42%, rgba(201, 169, 97, 0.05), transparent 70%), var(--ink);
  height: 640px; overflow: hidden;
}
#map-canvas { width: 100%; height: 100%; display: block; cursor: grab; touch-action: none; }
#map-canvas.dragging { cursor: grabbing; }
.map-controls {
  position: absolute; top: 0.8rem; left: 0.8rem; z-index: 5;
  display: flex; flex-direction: column; gap: 0.4rem;
  background: rgba(27, 23, 18, 0.9); border: 1px solid var(--ink-line);
  padding: 0.8rem 0.95rem; font-size: 0.7rem; font-family: var(--sans); letter-spacing: 0.05em;
  backdrop-filter: blur(6px);
  max-width: 250px;
}
.map-controls .ctl-title { font-size: 0.62rem; letter-spacing: 0.24em; color: var(--ink-text-faint); }
.map-controls label { display: flex; align-items: center; gap: 0.45rem; color: var(--ink-text-dim); cursor: pointer; user-select: none; }
.map-controls label:hover { color: var(--ink-text); }
.map-controls .swatch { width: 14px; height: 2px; flex: none; }
.map-controls input[type="checkbox"], .map-controls input[type="radio"] { accent-color: #c9a961; }
.map-controls hr { border: none; border-top: 1px solid var(--ink-line); margin: 0.35rem 0; }
.map-side {
  border: 1px solid var(--ink-line); background: var(--ink-2); color: var(--ink-text);
  padding: 1.3rem 1.3rem; height: 640px; overflow-y: auto;
}
.map-side h2 { font-size: 1rem; letter-spacing: 0.16em; margin-bottom: 0.6rem; }
.map-side h3 { font-family: var(--sans); font-size: 0.66rem; font-weight: 500; letter-spacing: 0.2em; color: var(--ink-text-dim); margin-top: 1.2rem; }
.map-side .placeholder { color: var(--ink-text-faint); font-size: 0.8rem; }
.map-side .edge-group h4 { font-family: var(--sans); font-size: 0.68rem; font-weight: 500; letter-spacing: 0.08em; margin: 0.9rem 0 0.35rem; display: flex; align-items: center; gap: 0.45rem; color: var(--ink-text-dim); }
.map-side .edge-group h4 .swatch { width: 14px; height: 2px; }
.map-side .edge-item { font-family: var(--sans); font-size: 0.72rem; color: var(--ink-text-dim); padding: 0.35rem 0; border-bottom: 1px solid var(--ink-line); }
.map-side .edge-item a { color: var(--ink-text); }
.map-side .edge-item a:hover { color: var(--gold); }
.map-side .edge-item .edesc { display: block; color: var(--ink-text-faint); font-size: 0.66rem; }
.map-side a { color: var(--gold); }
.map-legend { display: flex; flex-wrap: wrap; gap: 0.3rem 0.9rem; font-family: var(--sans); font-size: 0.66rem; color: var(--ink-text-dim); margin-top: 1rem; }
.map-legend .dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 0.35em; vertical-align: -1px; }

/* ============================================================
   発電所への道（#/goal）
   ============================================================ */
/* 到達状態バッジ — 部分実証のみ新設（琥珀と緑金の中間・実線髪の毛線） */
.vs-partial { color: #8c8347; }
.band--ink .vs-partial, .band--ink2 .vs-partial { color: #b0a56e; }
.vs-unproven { color: var(--vs-claim); }
.band--ink .vs-unproven, .band--ink2 .vs-unproven { color: var(--vs-claim-ink); }

/* ゴール6条件 */
.goal-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.2rem; }
.goal-card { border: 1px solid var(--cream-line); padding: 1.7rem 1.6rem 1.5rem; transition: border-color 0.3s; }
.goal-card:hover { border-color: var(--cream-line-strong); }
.goal-no {
  font-family: var(--serif-en); font-size: 1.45rem; font-weight: 400;
  color: var(--gold-deep); line-height: 1; font-variant-numeric: oldstyle-nums;
}
.goal-card h3 { font-size: 1.04rem; letter-spacing: 0.14em; margin-top: 0.75rem; }
.goal-card p { margin-top: 0.55rem; font-size: 0.82rem; line-height: 1.95; color: var(--cream-text-dim); }

/* 現在地 — 到達した事実と、まだ無いもの */
.stand-list { list-style: none; padding: 0; }
.stand-list > li { border-top: 1px solid var(--ink-line); padding: 2.5rem 0.2rem 2.7rem; }
.stand-list > li:last-child { border-bottom: 1px solid var(--ink-line); padding-bottom: 3rem; }
.stand-head { display: flex; align-items: baseline; gap: 1.2rem; }
.stand-no {
  font-family: var(--serif-en); font-size: 1.9rem; font-weight: 400;
  color: var(--gold); line-height: 1; font-variant-numeric: oldstyle-nums;
}
.stand-head h3 { font-size: 1.14rem; letter-spacing: 0.16em; }
.stand-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem 2.6rem; margin-top: 1.4rem; }
.stand-col h4 {
  font-family: var(--sans); font-size: 0.66rem; font-weight: 500; letter-spacing: 0.22em;
  color: var(--ink-text-faint);
  display: flex; align-items: center; gap: 0.8em;
  margin-bottom: 0.6rem;
}
.stand-col p { font-size: 0.88rem; color: var(--ink-text-dim); line-height: 2.05; }
.stand-links {
  margin-top: 1.3rem;
  font-family: var(--sans); font-size: 0.7rem; letter-spacing: 0.08em;
  color: var(--ink-text-faint);
}
.stand-links a {
  color: var(--ink-text-dim);
  border-bottom: 1px solid var(--ink-line-strong); padding-bottom: 1px;
  margin-left: 1.1em;
}
.stand-links a:first-of-type { margin-left: 0.6em; }
.stand-links a:hover { color: var(--gold); border-color: var(--gold); }

/* 非対称 — 核分裂と核融合の対比 */
.asym-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; margin-bottom: 3.4rem; }
.asym-panel { border: 1px solid var(--cream-line); padding: 2.1rem 1.9rem 1.9rem; }
.asym-en {
  font-family: var(--serif-en); font-style: italic;
  font-size: 0.88rem; letter-spacing: 0.14em; color: var(--gold-deep);
}
.asym-panel h3 { font-size: 1.08rem; letter-spacing: 0.14em; margin-top: 0.3rem; }
.asym-years {
  font-family: var(--serif-en); font-weight: 400;
  font-size: clamp(2.6rem, 5vw, 3.4rem); line-height: 1.15;
  color: var(--cream-text); font-variant-numeric: oldstyle-nums;
  margin-top: 1rem;
}
.asym-years .asym-unit { font-family: var(--serif-ja); font-size: 0.42em; letter-spacing: 0.1em; margin-left: 0.15em; color: var(--cream-text-dim); }
.asym-sub { font-family: var(--sans); font-size: 0.7rem; letter-spacing: 0.1em; color: var(--cream-text-faint); margin-top: 0.15rem; }
.asym-panel > p:last-child { font-size: 0.88rem; color: var(--cream-text-dim); margin-top: 0.9rem; }

/* 小さな年表 — 最後のノードは空欄（未来） */
.road-tl { max-width: 680px; margin-bottom: 1.4rem; }
.road-tl .tag { margin-right: 0.6em; vertical-align: 1px; }
.timeline li.tl-open::before { background: transparent; border: 1px solid var(--gold-deep); }
.timeline li.tl-open .tl-date { color: var(--cream-text-faint); }
.timeline li.tl-open .tl-desc { color: var(--cream-text-faint); }

/* 公表されている「初発電」の目標 */
.target-list { list-style: none; padding: 0; border-top: 1px solid var(--cream-line); }
.target-list li {
  display: flex; flex-wrap: wrap; gap: 0.4rem 1.6rem; align-items: baseline;
  border-bottom: 1px solid var(--cream-line);
  padding: 1.15rem 0.2rem;
}
.target-name { min-width: 220px; font-size: 0.96rem; letter-spacing: 0.08em; }
.target-name a:hover { color: var(--gold-deep); }
.target-text { flex: 1; min-width: 260px; font-family: var(--sans); font-size: 0.78rem; line-height: 1.95; color: var(--cream-text-dim); }
.target-text .badge { margin-right: 0.7em; vertical-align: 1px; }

@media (max-width: 640px) {
  .stand-pair, .asym-grid { grid-template-columns: 1fr; }
  .target-name { min-width: 0; }
}

/* ============================================================
   フッター
   ============================================================ */
.site-footer { border-top: 1px solid var(--ink-line); background: var(--ink); }
.footer-inner { max-width: 1120px; margin: 0 auto; padding: 3rem 2rem 3.4rem; text-align: center; }
.footer-en {
  font-family: var(--serif-en); font-style: italic;
  font-size: 0.88rem; letter-spacing: 0.16em; color: var(--gold);
}
.footer-note {
  margin-top: 1rem;
  font-family: var(--sans); font-size: 0.68rem; letter-spacing: 0.1em;
  color: var(--ink-text-faint); line-height: 2.2;
}
.footer-note a { color: var(--ink-text-dim); border-bottom: 1px solid var(--ink-line-strong); padding-bottom: 1px; }
.footer-note a:hover { color: var(--gold); border-color: var(--gold); }

/* ============================================================
   レスポンシブ
   ============================================================ */
@media (max-width: 900px) {
  .map-layout { grid-template-columns: 1fr; }
  .map-stage { height: 460px; }
  .map-side { height: auto; max-height: 380px; }
  .wrap { padding: 3.6rem 1.3rem; }
}
@media (max-width: 640px) {
  body { font-size: 14.5px; }
  .site-header { flex-direction: column; align-items: stretch; gap: 0; padding: 0 1rem; }
  .brand { padding: 0.7rem 0 0.3rem; justify-content: center; }
  .brand-ja { font-size: 0.76rem; }
  .site-nav { justify-content: flex-start; }
  .site-nav a { padding: 0.6rem 0.55rem 0.8rem; }
  .hero { min-height: 76vh; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: 2.2rem 1rem; }
  .grid.cols-2, .grid.cols-3 { grid-template-columns: 1fr; }
  .paths-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.9rem; }
  .path-card figure { padding: 0.7rem 0.7rem 0.2rem; }
  .path-card .path-name { font-size: 0.9rem; padding: 0.2rem 0.8rem 0.1rem; }
  .path-card .path-line { font-size: 0.62rem; padding: 0 0.8rem 0.9rem; }
  .modal { padding: 1.5rem 1.2rem; }
  .map-controls { max-width: 185px; padding: 0.5rem 0.6rem; }
  .kv-panel { grid-template-columns: 1fr; gap: 0.15rem; }
  .kv-panel dt { margin-top: 0.7rem; }
  .index-en { display: none; }
  .photo-caption { left: 1.2rem; bottom: 1rem; right: 1.2rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}