/* Prisoners of the Yen — shared styles */
:root{
  color-scheme:light;
  --paper:#f4f1ea; --surface:#fbfaf7; --surface-2:#efece3;
  --ink:#15140f; --ink-2:#4a4842; --muted:#89867d;
  --rule:#ded9cc; --rule-strong:#c9c3b2;
  --accent:#9c2f28; --accent-ink:#fff;
  --chart-surface:#fcfcfb;
  --s1:#2a78d6; --s2:#eb6834; --s3:#1baf7a;
  --good:#0ca30c; --warn:#fab219; --crit:#d03b3b;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:system-ui,-apple-system,"Segoe UI",Helvetica,Arial,sans-serif;
  --maxw:68rem;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --paper:#0e0e0d; --surface:#171716; --surface-2:#1f1f1d;
    --ink:#f5f3ec; --ink-2:#c3c2b7; --muted:#8a877e;
    --rule:#2c2c2a; --rule-strong:#3a3a37;
    --accent:#e0605a; --accent-ink:#15140f;
    --chart-surface:#1a1a19;
    --s1:#3987e5; --s2:#d95926; --s3:#199e70;
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --paper:#0e0e0d; --surface:#171716; --surface-2:#1f1f1d;
  --ink:#f5f3ec; --ink-2:#c3c2b7; --muted:#8a877e;
  --rule:#2c2c2a; --rule-strong:#3a3a37;
  --accent:#e0605a; --accent-ink:#15140f;
  --chart-surface:#1a1a19;
  --s1:#3987e5; --s2:#d95926; --s3:#199e70;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
  font-size:17px;line-height:1.6;overflow-x:hidden}
a{color:inherit}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 1.5rem}
.rule{border:0;border-top:1px solid var(--rule);margin:0}

/* ---------- top bar ---------- */
.topbar{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--rule)}
.topbar .wrap{display:flex;align-items:center;gap:1.25rem;height:56px}
.brand{font-family:var(--serif);font-size:1rem;letter-spacing:.02em;text-decoration:none;font-weight:600}
.brand span{color:var(--accent)}
.navlinks{margin-left:auto;display:flex;gap:1.25rem;align-items:center}
.navlinks a{font-size:.85rem;text-decoration:none;color:var(--ink-2);letter-spacing:.03em}
.navlinks a:hover{color:var(--ink)}
.themebtn{border:1px solid var(--rule-strong);background:transparent;color:var(--ink-2);
  border-radius:999px;width:30px;height:30px;cursor:pointer;font-size:.8rem;line-height:1}
.themebtn:hover{color:var(--ink);border-color:var(--ink-2)}

/* ---------- hero ---------- */
.hero{padding:5.5rem 0 3.5rem;border-bottom:1px solid var(--rule)}
.kicker{font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin:0 0 1.5rem}
h1.title{font-family:var(--serif);font-size:clamp(2.6rem,7vw,4.6rem);line-height:1.02;
  margin:0 0 1.25rem;letter-spacing:-.02em;font-weight:600}
.subtitle{font-family:var(--serif);font-size:clamp(1.05rem,2.4vw,1.4rem);color:var(--ink-2);
  max-width:44ch;margin:0 0 2.25rem;font-style:italic;line-height:1.4}
.lede{font-family:var(--serif);font-size:1.15rem;max-width:62ch;color:var(--ink-2);margin:0 0 2rem}
.cta{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:.5rem}
.btn{display:inline-block;padding:.7rem 1.3rem;border-radius:2px;text-decoration:none;
  font-size:.86rem;letter-spacing:.04em;border:1px solid var(--accent);transition:.15s}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{opacity:.88}
.btn-ghost{border-color:var(--rule-strong);color:var(--ink-2)}
.btn-ghost:hover{border-color:var(--ink-2);color:var(--ink)}

/* ---------- sections ---------- */
section{padding:4rem 0;border-bottom:1px solid var(--rule)}
.sec-label{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin:0 0 1.5rem}
h2{font-family:var(--serif);font-size:clamp(1.6rem,3.4vw,2.3rem);margin:0 0 1.25rem;
  letter-spacing:-.01em;font-weight:600;line-height:1.15}
h3{font-family:var(--serif);font-size:1.2rem;margin:0 0 .5rem;font-weight:600}
p{margin:0 0 1.1rem}
.prose{font-family:var(--serif);font-size:1.08rem;max-width:64ch;color:var(--ink-2)}
.prose strong{color:var(--ink);font-weight:600}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
@media(max-width:820px){.two-col{grid-template-columns:1fr;gap:2rem}}

/* ---------- arc strip ---------- */
.arc-head{font-family:var(--serif);font-size:1.05rem;color:var(--ink);margin:2.5rem 0 .35rem;letter-spacing:.01em}
.arc-note{font-size:.84rem;color:var(--muted);margin:0;line-height:1.55;max-width:62ch}
.arc{display:grid;grid-template-columns:repeat(5,1fr);gap:0;margin:1.25rem 0 0;
  border-top:1px solid var(--rule)}
.arc div{padding:1.25rem 1rem 0;border-right:1px solid var(--rule)}
.arc div:last-child{border-right:0}
.arc .yr{font-size:.72rem;letter-spacing:.1em;color:var(--accent);margin:0 0 .4rem}
.arc .lbl{font-family:var(--serif);font-size:.98rem;color:var(--ink);margin:0 0 .3rem}
.arc .txt{font-size:.8rem;color:var(--muted);margin:0;line-height:1.45}
@media(max-width:820px){.arc{grid-template-columns:1fr 1fr}.arc div{border-bottom:1px solid var(--rule);padding-bottom:1rem}}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;margin-top:2rem}
@media(max-width:900px){.cards{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--rule);border-radius:3px;padding:1.5rem;
  display:flex;flex-direction:column;gap:.6rem}
.card .odds{font-size:2rem;font-family:var(--serif);letter-spacing:-.02em;line-height:1}
.card .case{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.card p{font-size:.92rem;color:var(--ink-2);margin:0}
.card .sacrifice{font-size:.82rem;color:var(--ink);border-top:1px solid var(--rule);padding-top:.7rem;margin-top:auto}
.dot{display:inline-block;width:9px;height:9px;border-radius:2px;margin-right:.45rem;vertical-align:baseline}

/* ---------- dashboard ---------- */
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin:2rem 0 0}
@media(max-width:1000px){.tiles{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.tiles{grid-template-columns:1fr}}
.tile{background:var(--chart-surface);border:1px solid var(--rule);border-radius:3px;padding:1.1rem 1.15rem}
.tile .name{font-size:.74rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin:0 0 .55rem}
.tile .val{font-size:1.9rem;letter-spacing:-.02em;line-height:1.05;margin:0;color:var(--ink)}
.tile .val small{font-size:.9rem;color:var(--muted);letter-spacing:0}
.tile .meta{font-size:.76rem;color:var(--muted);margin:.45rem 0 0;font-variant-numeric:tabular-nums}
.tile .spark{margin-top:.7rem;display:block;width:100%;height:34px;overflow:visible}
.delta-up{color:var(--good)} .delta-dn{color:var(--crit)}
table.matrix{width:100%;border-collapse:collapse;font-size:.86rem;margin-top:1.5rem}
table.matrix th,table.matrix td{text-align:left;padding:.7rem .8rem;border-bottom:1px solid var(--rule);vertical-align:top}
table.matrix th{font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:500}
table.matrix td.ind{color:var(--ink);font-weight:500;width:22%}
table.matrix td{color:var(--ink-2)}
.tablewrap{overflow-x:auto}
.reading{background:var(--surface-2);border-left:2px solid var(--accent);padding:1.1rem 1.25rem;margin-top:2rem;
  font-family:var(--serif);font-size:1rem;color:var(--ink-2)}
.reading b{color:var(--ink)}
.stale{font-size:.76rem;color:var(--muted);margin-top:1.25rem}

/* ---------- footer ---------- */
footer{padding:3rem 0 4rem;color:var(--muted);font-size:.84rem}
footer a{color:var(--ink-2)}
.foot-grid{display:flex;gap:2rem;flex-wrap:wrap;justify-content:space-between}

/* ---------- trilemma diagram ---------- */
.tri-frame path{fill:none;stroke:var(--rule-strong);stroke-width:1.5}
.tri-node circle{stroke:var(--paper);stroke-width:2}
.tri-label text{font-family:var(--sans);font-size:12.5px;fill:var(--ink)}
.tri-edge text{font-family:var(--sans);font-size:11px;fill:var(--muted)}

/* ---------- reading page ---------- */
.privatetag{font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);
  border:1px solid var(--accent);border-radius:2px;padding:.18rem .45rem}
.book-shell{max-width:78rem;margin:0 auto;padding:0 1.5rem;display:grid;
  grid-template-columns:16rem minmax(0,1fr);gap:3.5rem;align-items:start}
.book-nav{position:sticky;top:56px;max-height:calc(100vh - 56px);overflow-y:auto;
  padding:2.5rem 0 3rem;font-size:.83rem}
.book-nav .nav-label{font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 .9rem}
.book-nav ul{list-style:none;margin:0;padding:0}
.book-nav ul ul{margin:.25rem 0 .6rem .75rem;border-left:1px solid var(--rule);padding-left:.75rem}
.book-nav li{margin:0 0 .35rem}
.book-nav a{text-decoration:none;color:var(--ink-2);line-height:1.35;display:block;padding:.1rem 0}
.book-nav a:hover{color:var(--ink)}
.book-nav a.active{color:var(--accent)}
.book-nav ul ul a{color:var(--muted);font-size:.79rem}
@media(max-width:960px){
  .book-shell{grid-template-columns:1fr;gap:0}
  .book-nav{position:static;max-height:none;border-bottom:1px solid var(--rule);padding-bottom:1.5rem}
  .book-nav ul ul{display:none}
}
.book-nav .navwrap{margin:0}
.book-nav summary.nav-label{cursor:pointer;list-style:none}
.book-nav summary.nav-label::-webkit-details-marker{display:none}
@media(min-width:961px){ .book-nav summary.nav-label{display:none} }
@media(max-width:960px){
  .book-nav{padding:0;border-bottom:1px solid var(--rule)}
  .book-nav summary.nav-label{margin:0;padding:1rem 0}
  .book-nav summary.nav-label::after{content:' ▾';color:var(--muted)}
  .book-nav .navwrap[open] summary.nav-label::after{content:' ▴'}
  .book-nav .navwrap[open]{padding-bottom:1.25rem}
  .book-nav ul ul{display:block}
}
.book{padding:2.5rem 0 5rem;font-family:var(--serif);font-size:1.14rem;line-height:1.72;
  color:var(--ink-2);max-width:40rem}
.book h1{font-size:clamp(1.9rem,4vw,2.6rem);line-height:1.12;letter-spacing:-.015em;color:var(--ink);
  margin:4.5rem 0 1.5rem;font-weight:600;padding-top:1.5rem;border-top:1px solid var(--rule)}
.book > h1:first-child{margin-top:1rem;border-top:0;padding-top:0}
.book h2{font-size:1.32rem;color:var(--ink);margin:2.75rem 0 .9rem;font-weight:600;letter-spacing:0}
.book h3{font-size:1.08rem;color:var(--ink);margin:2rem 0 .7rem}
.book p{margin:0 0 1.35rem}
.book strong{color:var(--ink);font-weight:600}
.book em{font-style:italic}
.book ul,.book ol{margin:0 0 1.35rem;padding-left:1.3rem}
.book li{margin:0 0 .5rem}
.book hr{border:0;border-top:1px solid var(--rule);margin:2.5rem 0}
.book a{color:var(--accent)}
.book table{width:100%;border-collapse:collapse;font-family:var(--sans);font-size:.84rem;margin:1.5rem 0 2rem}
.book th,.book td{text-align:left;padding:.6rem .7rem;border-bottom:1px solid var(--rule);vertical-align:top;color:var(--ink-2)}
.book th{font-size:.7rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);font-weight:500}
.book table{display:block;overflow-x:auto}
.book code{font-size:.85em;background:var(--surface-2);padding:.1em .35em;border-radius:2px}
.fig{margin:2.25rem 0;padding:0}
.fig img{width:100%;height:auto;display:block;border:1px solid var(--rule);border-radius:2px;background:var(--surface)}
.fig .fig-slot{display:none}
.fig-pending .fig-slot{display:flex;align-items:center;justify-content:center;height:9rem;
  border:1px dashed var(--rule-strong);border-radius:2px;background:var(--surface);
  font-family:var(--sans);font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.fig figcaption{font-family:var(--sans);font-size:.79rem;color:var(--muted);margin-top:.6rem;line-height:1.45}

@media(max-width:700px){
  .topbar .wrap{gap:.75rem}
  .navlinks{gap:.9rem}
  .navlinks a:not(.keep){display:none}
  .privatetag{display:none}
  .hero{padding:3.5rem 0 2.5rem}
  section{padding:3rem 0}
}

/* anchors clear the sticky bar */
.book h1,.book h2,.book h3,section[id]{scroll-margin-top:76px}

/* figures follow the page theme (toggle included, not just the OS setting) */
.fig .fig-dark{display:none}
@media(prefers-color-scheme:dark){
  :root:not([data-theme="light"]) .fig .fig-light{display:none}
  :root:not([data-theme="light"]) .fig .fig-dark{display:block}
}
:root[data-theme="dark"] .fig .fig-light{display:none}
:root[data-theme="dark"] .fig .fig-dark{display:block}
.fig-pending .fig-light,.fig-pending .fig-dark{display:none !important}

/* --- Japanese edition -------------------------------------------------------
   The Latin serif stack above carries no CJK glyphs, so Japanese set in it
   falls through to whatever the OS substitutes - the on-screen form of the
   tofu problem ja/check_tofu.py guards against in the source. Give the JA
   reading page a real mincho stack, and Japanese line-breaking rules. */
.ja,.reading-ja{
  --serif:"Hiragino Mincho ProN","Yu Mincho",YuMincho,"Noto Serif JP",
          "BIZ UDPMincho","MS PMincho",serif;
  --sans:"Hiragino Sans","Yu Gothic","Noto Sans JP","Meiryo",system-ui,sans-serif;
}
.reading-ja .book{line-height:1.9;text-align:justify}
.reading-ja .book p{margin:0 0 1.15em;text-indent:1em}
.reading-ja .book h1,.reading-ja .book h2{line-height:1.5;text-indent:0}
.reading-ja .book,.reading-ja .book-nav{
  line-break:strict;word-break:normal;overflow-wrap:anywhere;
  font-feature-settings:"palt" 1;
}
.reading-ja .book table{font-size:.88rem}
.reading-ja figcaption{text-indent:0}
.ja{line-break:strict;word-break:normal;font-feature-settings:"palt" 1}
.ja .lede,.ja .prose p{line-height:1.9}
.ja .title{letter-spacing:.02em}