@import url('https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@500;700;800&family=Zen+Kaku+Gothic+New:wght@400;500;700;900&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root{
  --ink:#1c1712;
  --paper:#ece3d0;
  --paper-deep:#e2d6ba;
  --indigo:#212f45;
  --indigo-deep:#161f30;
  --vermilion:#b23a2f;
  --gold:#a5822f;
  --line:#c9bb9b;
  --line-soft:#d8cdb2;
  --paper-white:#f6f0e2;
}

*{margin:0;padding:0;box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  background:var(--paper);
  color:var(--ink);
  font-family:'Zen Kaku Gothic New', sans-serif;
  font-weight:400;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.01ms !important; animation-iteration-count:1 !important; transition-duration:0.01ms !important;}
}

a{color:inherit; text-decoration:none;}

.mincho{font-family:'Shippori Mincho', serif;}
.mono{font-family:'JetBrains Mono', monospace;}

::selection{background:var(--vermilion); color:var(--paper-white);}

:focus-visible{
  outline:2px solid var(--vermilion);
  outline-offset:3px;
}

/* ---------- layout shell ---------- */
.wrap{max-width:920px; margin:0 auto; padding:0 28px;}

/* ---------- paper texture blocks ---------- */
.ledger-lines{
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 41px,
    var(--line-soft) 42px
  );
}

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(236,227,208,0.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.site-header .wrap{
  display:flex; align-items:center; justify-content:space-between;
  height:76px;
}
.brand{
  display:flex; align-items:center; gap:12px;
}
.brand-mark{
  width:38px; height:38px; border-radius:50%;
  border:2px solid var(--vermilion);
  color:var(--vermilion);
  display:flex; align-items:center; justify-content:center;
  font-family:'Shippori Mincho', serif;
  font-weight:800; font-size:15px;
  transform:rotate(-6deg);
  flex-shrink:0;
}
.brand-text{
  font-family:'Shippori Mincho', serif;
  font-weight:800;
  font-size:20px;
  letter-spacing:0.04em;
}
.brand-sub{
  font-family:'JetBrains Mono', monospace;
  font-size:10px;
  letter-spacing:0.12em;
  color:var(--indigo);
  opacity:0.7;
  display:block;
  margin-top:2px;
}
.site-nav{
  font-family:'JetBrains Mono', monospace;
  font-size:12px;
  letter-spacing:0.05em;
  color:var(--indigo);
}
.site-nav a{
  opacity:0.75;
  transition:opacity .2s;
}
.site-nav a:hover{opacity:1; text-decoration:underline; text-underline-offset:4px;}

/* ---------- hanko stamp signature element ---------- */
.hanko{
  --hanko-color:var(--vermilion);
  width:84px; height:84px;
  border-radius:50%;
  border:3px solid var(--hanko-color);
  color:var(--hanko-color);
  display:flex; align-items:center; justify-content:center;
  flex-direction:column;
  font-family:'Shippori Mincho', serif;
  font-weight:800;
  font-size:13px;
  line-height:1.3;
  letter-spacing:0.06em;
  transform:rotate(-8deg);
  position:relative;
  flex-shrink:0;
  mix-blend-mode:multiply;
  opacity:0.92;
}
.hanko::before{
  content:'';
  position:absolute;
  inset:6px;
  border:1px solid var(--hanko-color);
  border-radius:50%;
  opacity:0.55;
}
.hanko.stamp-in{
  animation:stampDown .5s cubic-bezier(.2,1.4,.4,1) both;
}
@keyframes stampDown{
  0%{ transform:rotate(-8deg) scale(2.4); opacity:0; }
  60%{ opacity:0.95; }
  100%{ transform:rotate(-8deg) scale(1); opacity:0.92; }
}

/* ---------- hero ---------- */
.hero{
  padding:76px 0 64px;
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
}
.hero-eyebrow{
  font-family:'JetBrains Mono', monospace;
  font-size:12px;
  letter-spacing:0.16em;
  color:var(--vermilion);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:22px;
}
.hero-eyebrow::before{
  content:'';
  width:26px; height:1px;
  background:var(--vermilion);
}
.hero h1{
  font-family:'Shippori Mincho', serif;
  font-weight:800;
  font-size:clamp(32px, 5.4vw, 54px);
  line-height:1.45;
  letter-spacing:0.01em;
  max-width:14ch;
}
.hero h1 em{
  font-style:normal;
  color:var(--vermilion);
  background:linear-gradient(transparent 62%, rgba(178,58,47,0.16) 62%);
}
.hero-lede{
  margin-top:26px;
  max-width:52ch;
  font-size:16px;
  color:var(--indigo-deep);
  opacity:0.86;
}
.hero-row{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
}
.hero-hanko-wrap{margin-bottom:4px;}

/* ---------- section labels ---------- */
.section-label{
  font-family:'JetBrains Mono', monospace;
  font-size:12px;
  letter-spacing:0.14em;
  color:var(--indigo);
  opacity:0.7;
  display:flex;
  align-items:center;
  gap:10px;
  margin:64px 0 28px;
}
.section-label::after{
  content:'';
  flex:1;
  height:1px;
  background:var(--line);
}

/* ---------- article list (ledger rows) ---------- */
.ledger{
  border-top:1px solid var(--ink);
}
.ledger-row{
  display:grid;
  grid-template-columns:96px 1fr auto;
  gap:22px;
  align-items:start;
  padding:26px 4px;
  border-bottom:1px solid var(--line);
  transition:background .18s;
}
.ledger-row:hover{background:var(--paper-white);}
.ledger-row.disabled{opacity:0.45; pointer-events:none;}

.ledger-tag{
  font-family:'JetBrains Mono', monospace;
  font-size:11px;
  letter-spacing:0.06em;
  color:var(--paper-white);
  background:var(--indigo);
  padding:4px 8px;
  display:inline-block;
  white-space:nowrap;
  margin-top:4px;
}
.ledger-tag.red{background:var(--vermilion);}

.ledger-body h2{
  font-family:'Shippori Mincho', serif;
  font-weight:700;
  font-size:21px;
  line-height:1.6;
  margin-bottom:8px;
}
.ledger-body p{
  font-size:14.5px;
  color:var(--indigo-deep);
  opacity:0.8;
  max-width:56ch;
}
.ledger-figure{
  text-align:right;
  font-family:'JetBrains Mono', monospace;
}
.ledger-figure .num{
  font-size:22px;
  font-weight:700;
  color:var(--vermilion);
  white-space:nowrap;
}
.ledger-figure .label{
  display:block;
  font-size:10px;
  color:var(--indigo);
  opacity:0.65;
  margin-top:4px;
  letter-spacing:0.04em;
}

@media (max-width:640px){
  .ledger-row{grid-template-columns:1fr; gap:10px;}
  .ledger-figure{text-align:left;}
}

/* ---------- header era nav ---------- */
.site-nav{
  display:flex;
  align-items:center;
  gap:22px;
}
.site-nav a{
  opacity:0.75;
  transition:opacity .2s;
  white-space:nowrap;
}
.site-nav a.current{opacity:1; color:var(--vermilion);}

/* ---------- era select cards (top page) ---------- */
.era-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:2px;
  background:var(--ink);
  border:1px solid var(--ink);
  margin:0 0 8px;
}
.era-card{
  background:var(--paper);
  padding:38px 26px 30px;
  position:relative;
  transition:background .2s;
  display:flex;
  flex-direction:column;
  min-height:210px;
}
.era-card:hover{background:var(--paper-white);}
.era-card .era-no{
  font-family:'JetBrains Mono', monospace;
  font-size:11px;
  letter-spacing:0.1em;
  opacity:0.55;
  margin-bottom:16px;
}
.era-card .era-kanji{
  font-family:'Shippori Mincho', serif;
  font-weight:800;
  font-size:15px;
  letter-spacing:0.06em;
  color:var(--era-color, var(--vermilion));
  margin-bottom:6px;
}
.era-card h2{
  font-family:'Shippori Mincho', serif;
  font-weight:800;
  font-size:24px;
  margin-bottom:14px;
}
.era-card p{
  font-size:13px;
  opacity:0.7;
  line-height:1.8;
  flex:1;
}
.era-card .era-count{
  margin-top:18px;
  font-family:'JetBrains Mono', monospace;
  font-size:11px;
  letter-spacing:0.05em;
  color:var(--era-color, var(--vermilion));
  display:flex;
  align-items:center;
  gap:8px;
}
.era-card .era-count::after{
  content:'→';
  transition:transform .2s;
}
.era-card:hover .era-count::after{transform:translateX(4px);}
.era-card.disabled{opacity:0.5;}
.era-card.disabled .era-count{color:var(--indigo); opacity:0.6;}

@media (max-width:760px){
  .era-grid{grid-template-columns:1fr;}
}

/* ---------- article card grid (with thumbnails) ---------- */
.card-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(260px, 1fr));
  gap:2px;
  background:var(--line);
  border:1px solid var(--line);
}
.article-card{
  background:var(--paper);
  display:flex;
  flex-direction:column;
  transition:background .18s;
}
.article-card:hover{background:var(--paper-white);}
.card-thumb{
  aspect-ratio:16/10;
  position:relative;
  overflow:hidden;
  background:linear-gradient(155deg, var(--indigo) 0%, var(--indigo-deep) 100%);
  display:flex;
  align-items:center;
  justify-content:center;
}
.card-thumb svg{width:52%; height:52%; opacity:0.95;}
.card-thumb .thumb-mark{
  position:absolute;
  bottom:10px; right:14px;
  font-family:'Shippori Mincho', serif;
  font-weight:800;
  font-size:12px;
  color:var(--paper-white);
  opacity:0.5;
  letter-spacing:0.08em;
}
.card-thumb .thumb-tag{
  position:absolute;
  top:12px; left:12px;
  font-family:'JetBrains Mono', monospace;
  font-size:10.5px;
  letter-spacing:0.05em;
  color:var(--paper-white);
  background:rgba(28,23,18,0.35);
  padding:4px 9px;
}
.card-body{
  padding:22px 22px 26px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.card-body h3{
  font-family:'Shippori Mincho', serif;
  font-weight:700;
  font-size:17px;
  line-height:1.6;
  margin-bottom:10px;
}
.card-body p{
  font-size:13.5px;
  color:var(--indigo-deep);
  opacity:0.78;
  line-height:1.8;
  flex:1;
  margin-bottom:16px;
}
.card-figure{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  font-family:'JetBrains Mono', monospace;
  border-top:1px dashed var(--line);
  padding-top:12px;
}
.card-figure .num{font-size:16px; font-weight:700; color:var(--vermilion);}
.card-figure .label{font-size:9.5px; color:var(--indigo); opacity:0.65;}

/* ---------- era page hero ---------- */
.era-hero{
  padding:60px 0 40px;
  border-bottom:1px solid var(--line);
}
.era-hero .era-kanji-big{
  font-family:'Shippori Mincho', serif;
  font-weight:800;
  font-size:14px;
  letter-spacing:0.14em;
  color:var(--era-color, var(--vermilion));
  margin-bottom:18px;
  display:flex; align-items:center; gap:10px;
}
.era-hero .era-kanji-big::before{
  content:'';
  width:26px; height:1px;
  background:var(--era-color, var(--vermilion));
}
.era-hero h1{
  font-family:'Shippori Mincho', serif;
  font-weight:800;
  font-size:clamp(30px, 4.6vw, 46px);
  margin-bottom:20px;
}
.era-hero p{
  max-width:56ch;
  font-size:15.5px;
  opacity:0.82;
  color:var(--indigo-deep);
}

/* ---------- coming soon strip ---------- */
.soon-list{
  list-style:none;
  font-family:'JetBrains Mono', monospace;
  font-size:13px;
  color:var(--indigo);
}
.soon-list li{
  padding:14px 4px;
  border-bottom:1px dashed var(--line);
  display:flex;
  justify-content:space-between;
  opacity:0.6;
}
.soon-list li span.status{
  color:var(--vermilion);
  letter-spacing:0.06em;
}

/* ---------- footer ---------- */
.site-footer{
  margin-top:100px;
  border-top:1px solid var(--ink);
  background:var(--indigo-deep);
  color:var(--paper-white);
}
.site-footer .wrap{padding:44px 28px 40px;}
.footer-disclaimer{
  font-size:12.5px;
  line-height:1.9;
  opacity:0.75;
  max-width:60ch;
  margin-bottom:22px;
}
.footer-brand{
  font-family:'Shippori Mincho', serif;
  font-size:15px;
  opacity:0.9;
}
.footer-meta{
  font-family:'JetBrains Mono', monospace;
  font-size:11px;
  opacity:0.5;
  margin-top:6px;
}

/* ================= article page ================= */
.article-hero{
  padding:52px 0 40px;
  border-bottom:1px solid var(--line);
}
.article-tagrow{
  display:flex;
  align-items:center;
  gap:14px;
  margin-bottom:24px;
  flex-wrap:wrap;
}
.article-hero h1{
  font-family:'Shippori Mincho', serif;
  font-weight:800;
  font-size:clamp(26px, 4.4vw, 40px);
  line-height:1.55;
  max-width:20ch;
  margin-bottom:20px;
}
.article-dek{
  font-size:15.5px;
  color:var(--indigo-deep);
  opacity:0.85;
  max-width:56ch;
}

.article-thumb-banner{
  margin-top:36px;
  aspect-ratio:21/9;
  max-height:320px;
  position:relative;
  overflow:hidden;
  background:linear-gradient(155deg, var(--indigo) 0%, var(--indigo-deep) 100%);
  display:flex;
  align-items:center;
  justify-content:center;
}
.article-thumb-banner svg{width:min(220px,34%); height:auto; opacity:0.95;}
.article-thumb-banner .thumb-mark{
  position:absolute;
  bottom:16px; right:22px;
  font-family:'Shippori Mincho', serif;
  font-weight:800;
  font-size:14px;
  color:var(--paper-white);
  opacity:0.5;
  letter-spacing:0.1em;
}

.headline-figure{
  margin:44px 0 8px;
  padding:32px 28px;
  background:var(--indigo);
  color:var(--paper-white);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  position:relative;
}
.headline-figure::before{
  content:'';
  position:absolute; left:0; top:0; bottom:0;
  width:6px;
  background:var(--vermilion);
}
.headline-figure .hf-label{
  font-family:'JetBrains Mono', monospace;
  font-size:12px;
  letter-spacing:0.1em;
  opacity:0.7;
}
.headline-figure .hf-num{
  font-family:'Shippori Mincho', serif;
  font-weight:800;
  font-size:clamp(30px, 5vw, 46px);
  letter-spacing:0.01em;
}
.headline-figure .hf-num small{
  font-family:'JetBrains Mono', monospace;
  font-size:14px;
  font-weight:400;
  margin-left:6px;
  opacity:0.75;
}

.article-body{
  padding:52px 0 20px;
  max-width:680px;
}
.article-body h2{
  font-family:'Shippori Mincho', serif;
  font-weight:700;
  font-size:22px;
  margin:44px 0 18px;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.article-body h2 .no{
  font-family:'JetBrains Mono', monospace;
  font-size:13px;
  color:var(--vermilion);
  margin-right:10px;
}
.article-body p{
  font-size:15.5px;
  margin-bottom:18px;
  color:#2a231b;
}
.article-body p.lede{
  font-size:17px;
  font-weight:500;
}
.article-body strong{color:var(--vermilion); font-weight:700;}

.pull-quote{
  margin:34px 0;
  padding:22px 26px;
  border-left:3px solid var(--vermilion);
  background:var(--paper-white);
  font-family:'Shippori Mincho', serif;
  font-size:18px;
  line-height:1.8;
}

/* breakdown ledger table */
.breakdown{
  width:100%;
  border-collapse:collapse;
  margin:26px 0 10px;
  font-family:'JetBrains Mono', monospace;
  font-size:13.5px;
}
.breakdown caption{
  text-align:left;
  font-family:'Zen Kaku Gothic New', sans-serif;
  font-size:12px;
  color:var(--indigo);
  opacity:0.7;
  margin-bottom:10px;
  letter-spacing:0.04em;
}
.breakdown th, .breakdown td{
  text-align:left;
  padding:12px 10px;
  border-bottom:1px solid var(--line);
}
.breakdown thead th{
  border-bottom:2px solid var(--ink);
  color:var(--indigo);
  font-weight:700;
  font-size:11px;
  letter-spacing:0.08em;
}
.breakdown td.amt, .breakdown th.amt{text-align:right; white-space:nowrap;}
.breakdown tfoot td{
  border-top:2px solid var(--ink);
  border-bottom:none;
  font-weight:700;
  color:var(--vermilion);
}

/* bar compare */
.bar-compare{margin:30px 0 10px;}
.bar-row{margin-bottom:18px;}
.bar-row .bar-meta{
  display:flex; justify-content:space-between;
  font-family:'JetBrains Mono', monospace;
  font-size:12.5px;
  margin-bottom:6px;
  color:var(--indigo-deep);
}
.bar-track{
  height:14px;
  background:var(--paper-deep);
  border:1px solid var(--line);
}
.bar-fill{
  height:100%;
  background:var(--indigo);
}
.bar-fill.red{background:var(--vermilion);}

/* verdict box */
.verdict{
  margin:46px 0;
  padding:28px;
  border:2px solid var(--ink);
  position:relative;
  background:var(--paper-white);
}
.verdict-tag{
  font-family:'JetBrains Mono', monospace;
  font-size:11px;
  letter-spacing:0.12em;
  color:var(--vermilion);
  margin-bottom:10px;
  display:block;
}
.verdict h3{
  font-family:'Shippori Mincho', serif;
  font-size:20px;
  margin-bottom:10px;
}
.verdict p{font-size:14.5px; margin:0; color:#2a231b;}

/* dialogue box (妄想シミュレーション用) */
.dialogue{
  margin:30px 0;
  padding:26px 28px;
  background:var(--indigo-deep);
  color:var(--paper-white);
  font-size:14.5px;
  line-height:1.9;
}
.dialogue p{margin-bottom:14px;}
.dialogue p:last-child{margin-bottom:0;}
.dialogue .speaker{
  font-family:'JetBrains Mono', monospace;
  font-weight:700;
  font-size:12px;
  letter-spacing:0.04em;
  color:var(--gold);
  display:block;
  margin-bottom:4px;
}
.dialogue .speaker.red{color:#d97a6c;}

/* reason list */
.reason-list{margin:30px 0; border-top:1px solid var(--line);}
.reason-item{
  padding:20px 4px;
  border-bottom:1px solid var(--line);
}
.reason-item h3{
  font-family:'Shippori Mincho', serif;
  font-weight:700;
  font-size:17px;
  margin-bottom:8px;
  display:flex;
  align-items:baseline;
  gap:10px;
}
.reason-item h3 .no{
  font-family:'JetBrains Mono', monospace;
  color:var(--vermilion);
  font-size:13px;
}
.reason-item p{font-size:14.5px; margin:0; color:#2a231b;}

.article-footnote{
  margin-top:40px;
  padding-top:20px;
  border-top:1px dashed var(--line);
  font-size:12px;
  color:var(--indigo);
  opacity:0.65;
  line-height:1.8;
}

.back-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:'JetBrains Mono', monospace;
  font-size:12px;
  letter-spacing:0.06em;
  color:var(--indigo);
  padding:36px 0 0;
}
.back-link:hover{color:var(--vermilion);}

.related{
  margin:60px 0 20px;
}

/* reveal-on-scroll */
.reveal{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .6s ease, transform .6s ease;
}
.reveal.in{
  opacity:1;
  transform:translateY(0);
}