:root {
  color-scheme: light;
  --paper: #f4efe7;
  --paper-2: #ebe3d7;
  --card: #fffaf2;
  --ink: #20212b;
  --ink-soft: #5f5c61;
  --muted: #8b8582;
  --line: rgba(32, 33, 43, .14);
  --night: #181927;
  --night-2: #24253a;
  --violet: #6b5dd3;
  --violet-soft: #e5e0ff;
  --coral: #e96755;
  --teal: #138c80;
  --gold: #d59a2d;
  --shadow: 0 18px 50px rgba(41, 35, 31, .10);
  --serif: Iowan Old Style, Charter, "Palatino Linotype", Palatino, Georgia, serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --paper: #11131a;
    --paper-2: #171a23;
    --card: #1d202a;
    --ink: #f3efe8;
    --ink-soft: #c6c0ba;
    --muted: #969098;
    --line: rgba(255,255,255,.13);
    --night: #0d0f16;
    --night-2: #1d1d31;
    --violet: #a99cf8;
    --violet-soft: #302c53;
    --coral: #ff846f;
    --teal: #4fc5b7;
    --gold: #efbd58;
    --shadow: 0 20px 55px rgba(0,0,0,.28);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: clip;
  background:
    radial-gradient(circle at 8% 8%, color-mix(in srgb, var(--violet) 9%, transparent), transparent 25rem),
    radial-gradient(circle at 90% 32%, color-mix(in srgb, var(--coral) 7%, transparent), transparent 30rem),
    var(--paper);
  color: var(--ink);
  font: 18px/1.68 var(--serif);
  text-rendering: optimizeLegibility;
}

a { color: var(--violet); text-decoration-thickness: .08em; text-underline-offset: .15em; }
a:hover { color: var(--coral); }
p { margin: 0 0 1.15rem; }
strong { font-weight: 700; }
code {
  font: .82em/1.4 var(--mono);
  background: color-mix(in srgb, var(--violet) 8%, var(--card));
  border: 1px solid var(--line);
  border-radius: .35rem;
  padding: .08em .36em;
}

#progress {
  position: fixed;
  inset: 0 auto auto 0;
  width: 0;
  height: 4px;
  z-index: 100;
  background: linear-gradient(90deg, var(--coral), var(--gold), var(--teal));
}

.hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(125deg, rgba(107,93,211,.28), transparent 45%),
    linear-gradient(310deg, rgba(233,103,85,.20), transparent 50%),
    var(--night);
  color: #fbf7f0;
  padding: clamp(3.4rem, 8vw, 7rem) 1.25rem 3rem;
}
.hero::after {
  content: "Q=S";
  position: absolute;
  right: -1.5rem;
  top: -4.5rem;
  font: 900 clamp(12rem, 34vw, 31rem)/1 var(--sans);
  letter-spacing: -.12em;
  color: rgba(255,255,255,.035);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; max-width: 74rem; margin: 0 auto; }
.eyebrow {
  margin: 0 0 1rem;
  color: #d7d0ff;
  font: 700 .72rem/1.2 var(--sans);
  letter-spacing: .16em;
  text-transform: uppercase;
}
h1 {
  max-width: 13ch;
  margin: 0;
  font: 760 clamp(3rem, 8vw, 6.6rem)/.94 var(--sans);
  letter-spacing: -.065em;
  text-wrap: balance;
}
.dek {
  max-width: 43rem;
  margin: 1.6rem 0 0;
  color: #d9d7df;
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  line-height: 1.45;
  text-wrap: balance;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(18rem, .65fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  margin-top: clamp(2.5rem, 6vw, 5rem);
}
.lede {
  max-width: 43rem;
  color: #f6f0e8;
  font-size: 1.12rem;
}
.lede p:last-child { margin-bottom: 0; }
.math-card {
  padding: 1.1rem;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 1rem;
  background: rgba(255,255,255,.065);
  backdrop-filter: blur(8px);
  box-shadow: 0 22px 60px rgba(0,0,0,.22);
  font-family: var(--sans);
}
.math-card .label {
  color: #aaa5bd;
  font-size: .7rem;
  font-weight: 750;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.math-card .equation-line {
  margin: .7rem 0;
  color: #fff;
  font: 700 clamp(1.05rem, 2vw, 1.35rem)/1.4 var(--serif);
}
.math-card p { margin: 0; color: #c5c0cc; font-size: .82rem; line-height: 1.48; }
.byline {
  margin: 2.3rem 0 0;
  color: #9995a5;
  font: .78rem/1.5 var(--sans);
}

.story-nav {
  position: sticky;
  top: 0;
  z-index: 30;
  overflow-x: auto;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}
.story-nav::-webkit-scrollbar { display: none; }
.story-nav div { display: flex; width: max-content; max-width: 74rem; margin: 0 auto; }
.story-nav a {
  padding: .75rem .85rem;
  color: var(--ink-soft);
  text-decoration: none;
  font: 700 .68rem/1 var(--sans);
  letter-spacing: .08em;
  text-transform: uppercase;
  white-space: nowrap;
}
.story-nav a:hover { color: var(--coral); }

main { width: 100%; max-width: 49rem; margin: 0 auto; padding: 4.5rem 1.25rem 7rem; }
.chapter { min-width: 0; margin: 0 0 6.5rem; scroll-margin-top: 4rem; }
.chapter-head { margin-bottom: 1.6rem; }
.chapter-no {
  display: block;
  color: var(--coral);
  font: 800 .72rem/1 var(--sans);
  letter-spacing: .16em;
  text-transform: uppercase;
  margin-bottom: .7rem;
}
h2 {
  margin: 0;
  font: 760 clamp(2.15rem, 5vw, 3.65rem)/1.02 var(--sans);
  letter-spacing: -.048em;
  text-wrap: balance;
}
h3 {
  margin: 2.2rem 0 .65rem;
  font: 740 1.25rem/1.22 var(--sans);
  letter-spacing: -.02em;
}
.chapter-dek { margin-top: 1rem; color: var(--ink-soft); font-size: 1.12rem; line-height: 1.52; }
.dropcap::first-letter {
  float: left;
  margin: .08em .1em 0 0;
  color: var(--violet);
  font: 760 4.2rem/.75 var(--sans);
}
.plain-note {
  margin: 1.7rem 0;
  padding: 1rem 1.1rem;
  border-left: 4px solid var(--teal);
  background: color-mix(in srgb, var(--teal) 7%, var(--card));
  color: var(--ink-soft);
  font-size: .97rem;
}
.plain-note strong { color: var(--ink); font-family: var(--sans); }

figure {
  margin: 2rem 0;
  padding: 1rem;
  overflow-x: auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}
figure svg { display: block; width: 100%; height: auto; min-width: 34rem; }
figcaption { margin-top: .8rem; color: var(--ink-soft); font: .78rem/1.5 var(--sans); }
svg text { font-family: var(--sans); fill: var(--ink-soft); }
.node { fill: var(--card); stroke: var(--ink-soft); stroke-width: 1.5; }
.edge { fill: none; stroke: var(--ink-soft); stroke-width: 1.7; }
.arrow { fill: var(--ink-soft); }
.hot { stroke: var(--coral); stroke-width: 2.6; }
.soft-grid { stroke: var(--line); stroke-width: 1; }

.duel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}
.duel-card, .theorem {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: .9rem;
}
.duel-card { padding: 1rem; }
.duel-card h3 { margin: 0 0 .8rem; font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; }
.chip {
  display: inline-block;
  margin: .15rem .12rem;
  padding: .22rem .52rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font: .78rem/1.25 var(--sans);
  white-space: nowrap;
}
.chip.diff { border-color: var(--coral); background: color-mix(in srgb, var(--coral) 9%, transparent); }

.subcat-table-wrap {
  margin: 2rem 0;
  overflow-x: auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}
.subcat-table {
  width: 100%;
  border-collapse: collapse;
  font: .88rem/1.4 var(--sans);
  text-align: left;
}
.subcat-table th {
  padding: .85rem 1rem;
  background: color-mix(in srgb, var(--card) 92%, var(--ink));
  border-bottom: 1px solid var(--line);
  font: 700 .75rem/1.2 var(--sans);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.subcat-table th.center, .subcat-table td.center {
  text-align: center;
}
.subcat-table td {
  padding: .75rem 1rem;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 40%, transparent);
  vertical-align: middle;
}
.subcat-table tr:last-child td {
  border-bottom: none;
}
.size-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  background: color-mix(in srgb, var(--line) 60%, transparent);
  font: 700 .85rem/1 var(--mono);
  color: var(--ink);
}
.count-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.8rem;
  height: 1.6rem;
  padding: 0 .4rem;
  border-radius: .4rem;
  background: color-mix(in srgb, var(--violet) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--violet) 35%, transparent);
  font: 700 .9rem/1 var(--mono);
  color: var(--violet);
}
.formula {
  margin: 1.5rem 0;
  padding: 1rem;
  overflow-x: auto;
  text-align: center;
  font-size: 1.12rem;
  white-space: nowrap;
}
.formula strong { color: var(--violet); }

.beat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .75rem;
  margin: 2rem 0;
}
.beat {
  min-height: 9rem;
  padding: .9rem;
  border-top: 4px solid var(--violet);
  background: var(--card);
  border-radius: 0 0 .75rem .75rem;
}
.beat:nth-child(2) { border-color: var(--teal); }
.beat:nth-child(3) { border-color: var(--coral); }
.beat:nth-child(4) { border-color: var(--gold); }
.beat time { color: var(--muted); font: 750 .68rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; }
.beat b { display: block; margin-top: .55rem; font: 720 .95rem/1.25 var(--sans); }
.beat p { margin: .4rem 0 0; color: var(--ink-soft); font: .78rem/1.4 var(--sans); }

.quote {
  position: relative;
  margin: 2rem 0;
  padding: 1.35rem 1.4rem 1.25rem 1.6rem;
  background: var(--night);
  color: #fff8ed;
  border-radius: 1rem;
  box-shadow: var(--shadow);
}
.quote::before {
  content: "“";
  position: absolute;
  top: -.6rem;
  left: .35rem;
  color: var(--coral);
  font: 700 4rem/1 var(--serif);
}
.quote p { position: relative; margin: 0; font-size: 1.08rem; }
.quote footer { margin-top: .7rem; color: #aaa6b3; font: .72rem/1.4 var(--sans); }

.vector {
  margin: 1.5rem 0;
  padding: 1rem;
  overflow-x: auto;
  background: var(--night);
  color: #efedf7;
  border-radius: .8rem;
  font: .78rem/1.8 var(--mono);
  white-space: nowrap;
}
.vector b { color: #ff9a82; }

.source-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 2rem 0;
}
.source-card {
  position: relative;
  padding: 1.15rem;
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: .95rem;
  box-shadow: var(--shadow);
}
.source-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 5px;
  background: var(--violet);
}
.source-card:last-child::before { background: var(--teal); }
.source-card .year {
  color: var(--muted);
  font: 760 .65rem/1 var(--sans);
  letter-spacing: .12em;
  text-transform: uppercase;
}
.source-card h3 { margin: .65rem 0 .2rem; font-size: 1rem; }
.source-card .authors { color: var(--ink-soft); font: .74rem/1.45 var(--sans); }
.source-card p { margin: .8rem 0 0; color: var(--ink-soft); font-size: .86rem; line-height: 1.5; }
.source-card a { font-weight: 720; }

.model-relay {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: .55rem;
  align-items: center;
  margin: 2rem 0;
}
.relay-stage {
  min-height: 9.4rem;
  padding: .95rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: .85rem;
}
.relay-stage strong { display: block; font: 740 .92rem/1.25 var(--sans); }
.relay-stage time { display: block; margin: .35rem 0 .7rem; color: var(--coral); font: 760 .64rem/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; }
.relay-stage span { display: block; color: var(--ink-soft); font: .74rem/1.42 var(--sans); }
.relay-arrow { color: var(--coral); font: 800 1.2rem/1 var(--sans); }
.relay-stage.break { color: #fff; background: var(--night); border-color: var(--night); }
.relay-stage.break time { color: #ff9a82; }
.relay-stage.break span { color: #c9c5ce; }

.blackout {
  position: relative;
  margin: 2.2rem 0;
  padding: clamp(1.4rem, 4vw, 2rem);
  overflow: hidden;
  color: #fff8ed;
  background:
    repeating-linear-gradient(135deg, transparent 0 18px, rgba(255,255,255,.025) 18px 20px),
    var(--night);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}
.blackout .label { color: #ff9a82; font: 760 .68rem/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; }
.blackout h3 { position: relative; z-index: 1; max-width: 18ch; margin: .65rem 0 .8rem; font-size: clamp(1.8rem, 4vw, 2.7rem); }
.blackout p { position: relative; z-index: 1; max-width: 43rem; color: #c9c5ce; }
.blackout a { color: #d7d0ff; }
.theorem-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 2rem 0; }
.theorem { position: relative; padding: 1.2rem; overflow: hidden; }
.theorem::after {
  content: attr(data-mark);
  position: absolute;
  right: -.15rem;
  bottom: -.5rem;
  color: color-mix(in srgb, var(--violet) 8%, transparent);
  font: 850 5rem/1 var(--sans);
}
.status {
  display: inline-block;
  margin-bottom: .75rem;
  padding: .22rem .48rem;
  border-radius: 999px;
  background: var(--violet-soft);
  color: var(--violet);
  font: 750 .62rem/1 var(--sans);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.theorem h3 { position: relative; z-index: 1; margin: 0 0 .55rem; font-size: 1.05rem; }
.theorem p { position: relative; z-index: 1; margin: 0; color: var(--ink-soft); font-size: .86rem; line-height: 1.5; }

.proof-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 2rem 0;
}
.proof-half {
  padding: 1.2rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-top: 5px solid var(--violet);
  border-radius: .95rem;
  box-shadow: var(--shadow);
}
.proof-half:last-child { border-top-color: var(--coral); }
.proof-half .label { color: var(--muted); font: 760 .65rem/1 var(--sans); letter-spacing: .11em; text-transform: uppercase; }
.proof-half h3 { margin: .65rem 0 .6rem; }
.proof-half p, .proof-half li { color: var(--ink-soft); font-size: .86rem; line-height: 1.5; }
.proof-half ul { margin: .8rem 0 0; padding-left: 1.05rem; }

.coxeter-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: .6rem;
  align-items: stretch;
  margin: 1.8rem 0;
}
.coxeter-flow div {
  display: grid;
  place-items: center;
  min-height: 7.5rem;
  padding: .8rem;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: .8rem;
}
.coxeter-flow b { display: block; font: 740 .9rem/1.3 var(--sans); }
.coxeter-flow span { display: block; margin-top: .35rem; color: var(--muted); font: .7rem/1.4 var(--sans); }
.coxeter-flow i { align-self: center; color: var(--coral); font: 800 1.35rem/1 var(--sans); font-style: normal; }

.bruhat-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 1.5rem 0;
}
.bruhat-pair > div { padding: 1rem; background: var(--card); border: 1px solid var(--line); border-radius: .85rem; }
.bruhat-pair b { display: block; margin-bottom: .45rem; font: 740 .83rem/1.25 var(--sans); color: var(--violet); }
.bruhat-pair p { margin: 0; color: var(--ink-soft); font-size: .84rem; line-height: 1.48; }
.identity {
  margin: 1.5rem 0;
  padding: 1.1rem;
  max-width: 100%;
  overflow-x: auto;
  text-align: center;
  background: color-mix(in srgb, var(--violet) 9%, var(--card));
  border: 1px solid color-mix(in srgb, var(--violet) 35%, var(--line));
  border-radius: .9rem;
  color: var(--violet);
  font: 740 1.05rem/1.5 var(--serif);
}

mjx-container { color: inherit; }
.formula mjx-container[display="true"],
.identity mjx-container[display="true"] { margin: .2rem 0 !important; }

.audit-turn {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: center;
  margin: 2rem 0;
}
.audit-turn div { padding: 1rem; border-radius: .9rem; background: var(--card); border: 1px solid var(--line); }
.audit-turn b { display: block; font: 740 1rem/1.25 var(--sans); }
.audit-turn span { color: var(--ink-soft); font: .78rem/1.4 var(--sans); }
.audit-turn i { color: var(--coral); font: 800 1.4rem/1 var(--sans); }

.open-box {
  margin: 2.5rem 0;
  padding: clamp(1.3rem, 4vw, 2.2rem);
  color: #fffaf2;
  background:
    radial-gradient(circle at 100% 0, rgba(233,103,85,.30), transparent 45%),
    var(--night);
  border-radius: 1.2rem;
  box-shadow: var(--shadow);
}
.open-box .label { color: #ffab95; font: 750 .68rem/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; }
.open-box h3 { margin: .65rem 0 .8rem; font-size: clamp(1.5rem, 4vw, 2.2rem); }
.open-box p { color: #c9c5ce; }

.footer {
  max-width: 49rem;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
  color: var(--muted);
  font: .75rem/1.5 var(--sans);
}

.references {
  margin: 1.8rem 0 0;
  padding-left: 1.35rem;
}
.references li {
  margin: 0 0 .9rem;
  padding-left: .35rem;
  color: var(--ink-soft);
  font-size: .9rem;
  line-height: 1.52;
}
.references li::marker { color: var(--coral); font: 760 .78rem var(--sans); }
.references cite { color: var(--ink); }
.references a { overflow-wrap: anywhere; }

@media (max-width: 850px) {
  .hero-grid { grid-template-columns: 1fr; }
  .beat-grid { grid-template-columns: repeat(2, 1fr); }
  .model-relay { grid-template-columns: 1fr 1fr; }
  .relay-arrow { display: none; }
}

@media (max-width: 620px) {
  body { font-size: 17px; }
  .hero { padding-top: 3rem; }
  h1 { font-size: clamp(2.45rem, 12.5vw, 3.4rem); }
  main { padding-top: 3.4rem; }
  .chapter { margin-bottom: 5rem; }
  .duel, .theorem-grid, .proof-split, .bruhat-pair, .source-pair, .model-relay { grid-template-columns: 1fr; }
  .beat-grid { grid-template-columns: 1fr; }
  .coxeter-flow { grid-template-columns: 1fr; }
  .coxeter-flow i { transform: rotate(90deg); text-align: center; }
  .audit-turn { grid-template-columns: 1fr; }
  .audit-turn i { transform: rotate(90deg); text-align: center; }
  figure { margin-left: -.45rem; margin-right: -.45rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

@media print {
  #progress, .story-nav, .language-switch { display: none; }
  body { background: white; color: black; }
  .hero { background: #181927; }
  .chapter { break-inside: avoid; }
}


html[lang="ja"] {
  --serif: "Hiragino Mincho ProN", "Yu Mincho", YuMincho, "Noto Serif JP", serif;
  --sans: "Hiragino Kaku Gothic ProN", "Yu Gothic", YuGothic, "Noto Sans JP", sans-serif;
}

html[lang="ja"] body { line-break: strict; }
html[lang="ja"] h1,
html[lang="ja"] h2 { letter-spacing: -.025em; }
html[lang="ja"] h3 { letter-spacing: 0; }
html[lang="ja"] .eyebrow,
html[lang="ja"] .story-nav a,
html[lang="ja"] .chapter-no,
html[lang="ja"] .math-card .label { letter-spacing: .08em; }

.language-switch {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .35rem;
  margin-top: 1rem;
  font-family: var(--sans);
  font-size: .78rem;
  letter-spacing: .04em;
}

.language-switch a,
.language-switch strong {
  display: inline-block;
  padding: .35rem .68rem;
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: 999px;
  color: rgba(255, 255, 255, .78);
  text-decoration: none;
}

.language-switch a:hover {
  border-color: rgba(255, 255, 255, .64);
  color: #fff;
}

.language-switch strong {
  background: rgba(255, 255, 255, .12);
  color: #fff;
  font-weight: 700;
}

html[lang="ja"] .dropcap::first-letter {
  float: none;
  margin: 0;
  font: inherit;
  color: inherit;
}

/* Japanese-language typography (applies only to the ja page via html lang="ja") */
:lang(ja) {
  --serif: Iowan Old Style, Charter, "Palatino Linotype", Palatino, Georgia,
    "Hiragino Mincho ProN", "Yu Mincho", YuMincho, "Noto Serif JP", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", YuGothic, "Noto Sans JP", sans-serif;
}
:lang(ja) h1, :lang(ja) h2, :lang(ja) h3 { letter-spacing: 0; }
:lang(ja) em { font-style: normal; font-weight: 700; }

/* Reading refinements */
p { text-wrap: pretty; }
h2, h3 { text-wrap: balance; }
:lang(ja) h1, :lang(ja) h2, :lang(ja) h3 { word-break: auto-phrase; }
.story-nav a.is-current { color: var(--coral); }