/* VJAF — proceedings booklet: indigo cover stock, two-ink inside pages */
:root {
  --cover: #0F2557;      /* cover stock */
  --cover-2: #0A1B44;
  --foil: #D9B45A;       /* gold foil on cover */
  --foil-2: #EBCB7A;
  --paper: #F4F6F9;      /* cool white paper */
  --paper-w: #FFFFFF;
  --ink: #14244F;        /* navy ink, text */
  --ink-2: #44527A;      /* secondary ink */
  --gold-ink: #8A6614;   /* gold printed on paper, AA on white */
  --rule: #14244F;
  --rule-2: #C7CEDD;
  --on-cover: #F2F4FA;
  --on-cover-2: #BAC4DE;

  --serif: "Source Serif 4", "Shippori Mincho", Georgia, serif;
  --sans: "Be Vietnam Pro", "Noto Sans JP", system-ui, sans-serif;
  --mincho: "Shippori Mincho", "Source Serif 4", serif;

  --wrap: 1200px;
  --g: clamp(16px, 4vw, 56px);
  --sec: clamp(72px, 9vw, 128px);
  --ease: cubic-bezier(.16, 1, .3, 1);
}
html:lang(ja) { --serif: "Shippori Mincho", "Source Serif 4", serif; --sans: "Noto Sans JP", "Be Vietnam Pro", system-ui, sans-serif; }

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; -webkit-text-size-adjust: 100%; scrollbar-color: var(--ink) var(--paper); }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.7 var(--sans); -webkit-font-smoothing: antialiased; }
h1, h2, h3 { margin: 0; font-weight: 600; text-wrap: balance; }
p, dl, dd, ol { margin: 0; }
p { text-wrap: pretty; }
a { color: inherit; }
img, svg { display: block; }
::selection { background: var(--foil); color: var(--cover-2); }
:focus-visible { outline: 2px solid var(--foil); outline-offset: 3px; border-radius: 2px; }
.num { font-variant-numeric: tabular-nums lining-nums; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--g); }
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--foil); color: var(--cover-2); padding: 10px 16px; font-weight: 600; }
.skip:focus { top: 12px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 26px; border-radius: 2px;
  font: 600 16px/1 var(--sans); text-decoration: none; white-space: nowrap;
  transition: background-color .3s var(--ease), color .3s var(--ease), box-shadow .3s var(--ease);
}
.btn svg { width: 18px; height: 18px; transition: transform .35s var(--ease); }
.btn:hover svg { transform: translateX(3px); }
.btn--foil { background: var(--foil); color: var(--cover-2); box-shadow: 0 1px 0 rgba(255,255,255,.35) inset, 0 8px 22px -12px rgba(0,0,0,.6); }
.btn--foil:hover { background: var(--foil-2); }
.btn--ink { background: var(--ink); color: #fff; }
.btn--ink:hover { background: var(--cover); box-shadow: 0 10px 24px -14px rgba(15,37,87,.9); }
.btn--sm { min-height: 40px; padding: 0 18px; font-size: 14px; }
.btn[aria-disabled="true"] { background: transparent; color: var(--on-cover-2); box-shadow: inset 0 0 0 1px currentColor; pointer-events: none; }
.btn--ink[aria-disabled="true"] { color: var(--ink-2); }

.link { font-weight: 600; text-decoration: underline; text-decoration-color: var(--foil); text-decoration-thickness: 2px; text-underline-offset: 6px; transition: text-underline-offset .3s var(--ease); }
.link:hover { text-underline-offset: 9px; }

/* status stamp: a mark in a fixed cell */
.stamp {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border: 1.5px solid currentColor; border-radius: 2px;
  font: 700 12px/1 var(--sans); letter-spacing: .12em; text-transform: uppercase;
  color: var(--foil);
}
.stamp::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.stamp[data-hollow]::before { background: transparent; box-shadow: inset 0 0 0 1.5px currentColor; }
.stamp--ink { color: var(--gold-ink); }
html:lang(ja) .stamp { letter-spacing: .04em; }

/* ---------- top bar ---------- */
.bar { position: sticky; top: 0; z-index: 50; background: var(--cover-2); color: var(--on-cover); border-bottom: 1px solid rgba(217,180,90,.3); }
.bar__inner { max-width: 1360px; margin: 0 auto; padding: 0 var(--g); height: 68px; display: flex; align-items: center; gap: 28px; }
.mark { display: flex; align-items: center; gap: 12px; text-decoration: none; flex-shrink: 0; }
.mark__seal {
  display: grid; place-items: center; width: 40px; height: 40px;
  border: 1.5px solid var(--foil); color: var(--foil);
  font: 700 11px/1.05 var(--serif); letter-spacing: .1em; text-align: center;
}
.mark__text { font: 600 13px/1.3 var(--sans); color: var(--on-cover); }
.bar__nav { display: flex; gap: 26px; margin-left: auto; }
.bar__nav a { font-size: 14px; font-weight: 500; color: var(--on-cover-2); text-decoration: none; padding: 6px 0; background: linear-gradient(var(--foil), var(--foil)) 0 100% / 0 1px no-repeat; transition: color .25s, background-size .4s var(--ease); }
.bar__nav a:hover { color: #fff; background-size: 100% 1px; }
.lang { display: flex; border: 1px solid rgba(186,196,222,.35); border-radius: 2px; }
.lang button { min-width: 38px; height: 32px; border: 0; background: none; cursor: pointer; font: 600 12px/1 var(--sans); letter-spacing: .06em; color: var(--on-cover-2); transition: background-color .25s, color .25s; }
.lang button + button { border-left: 1px solid rgba(186,196,222,.35); }
.lang button:hover { color: #fff; }
.lang button[aria-pressed="true"] { background: var(--on-cover); color: var(--cover-2); }

/* ---------- cover ---------- */
.cover {
  position: relative; background: var(--cover); color: var(--on-cover);
  min-height: min(calc(100svh - 68px), 1000px); display: grid; grid-template-rows: auto 1fr auto;
  padding: 0 var(--g); overflow: hidden; isolation: isolate;
}
/* the cover board's blind-embossed frame */
.cover::before { content: ""; position: absolute; inset: clamp(10px, 1.4vw, 18px); border: 1px solid rgba(217,180,90,.28); pointer-events: none; z-index: -1; }
.cover__runhead {
  max-width: 1360px; width: 100%; margin: 0 auto; padding: 26px clamp(0px, 2vw, 24px) 0;
  display: flex; gap: 14px; align-items: baseline;
  font: 600 12px/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--foil);
}
.cover__runja { font-family: var(--mincho); letter-spacing: .1em; color: var(--on-cover-2); }
.cover__folio { margin-left: auto; font-family: var(--serif); font-size: 14px; letter-spacing: .04em; }
html:lang(ja) .cover__runhead { letter-spacing: .08em; }
html:lang(ja) .cover__runja { display: none; }

.cover__grid {
  max-width: 1360px; width: 100%; margin: 0 auto; padding: clamp(28px, 5vh, 72px) clamp(0px, 2vw, 24px);
  display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(300px, 1fr); gap: clamp(40px, 6vw, 112px); align-items: end;
}
.cover__kind { font: 500 15px/1.4 var(--sans); color: var(--on-cover-2); padding-bottom: 16px; margin-bottom: 22px; border-bottom: 3px double rgba(217,180,90,.55); max-width: 30ch; }
.cover__title { font: 600 clamp(42px, min(5.2vw, 8.4vh), 84px)/1.04 var(--serif); letter-spacing: -.02em; color: var(--foil); max-width: 15ch; font-optical-sizing: auto; }
html:lang(ja) .cover__title { font-size: clamp(36px, 5vw, 72px); line-height: 1.25; letter-spacing: .02em; max-width: 12em; }
html:lang(en) .cover__title { max-width: 14ch; }
.cover__ja { margin-top: 26px; font: 600 clamp(18px, 2vw, 26px)/1.5 var(--mincho); letter-spacing: .12em; color: #fff; }
.cover__en { margin-top: 4px; font: 500 clamp(14px, 1.2vw, 16px)/1.5 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--on-cover-2); }
html:lang(ja) .cover__ja, html:lang(en) .cover__en { display: none; }
.cover__theme { margin-top: clamp(24px, 4vh, 40px); font: 500 clamp(18px, 1.8vw, 24px)/1.4 var(--serif); color: #fff; }
.cover__theme .q { color: var(--foil); font-family: var(--mincho); }

/* table of contents */
.toc { border-top: 3px solid var(--foil); padding-top: 18px; }
.toc__title { display: flex; justify-content: space-between; align-items: baseline; font: 600 12px/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--foil); margin-bottom: 10px; }
.toc__title [lang="ja"] { font-family: var(--mincho); letter-spacing: .2em; color: var(--on-cover-2); }
.toc__list { list-style: none; padding: 0; }
.toc__list a {
  display: grid; grid-template-columns: auto 1fr auto; align-items: baseline; gap: 10px;
  padding: 12px 0; border-bottom: 1px solid rgba(186,196,222,.2);
  text-decoration: none; font: 500 16px/1.4 var(--sans); color: var(--on-cover);
  transition: color .25s;
}
.toc__list i { height: 1px; align-self: end; margin-bottom: .38em; background: radial-gradient(circle, var(--on-cover-2) 1px, transparent 1.4px) 0 0 / 7px 2px repeat-x; opacity: .7; transform-origin: left; animation: lead 1.2s var(--ease) both; }
.toc__list li:nth-child(2) i { animation-delay: .06s; } .toc__list li:nth-child(3) i { animation-delay: .12s; }
.toc__list li:nth-child(4) i { animation-delay: .18s; } .toc__list li:nth-child(5) i { animation-delay: .24s; } .toc__list li:nth-child(6) i { animation-delay: .3s; }
@keyframes lead { from { transform: scaleX(0); } }
.toc__list b { font: 600 16px/1 var(--serif); color: var(--foil); font-variant-numeric: tabular-nums; }
.toc__list a:hover { color: var(--foil-2); }
.toc__list a:hover i { opacity: 1; }

/* colophon strip at the foot of the cover */
.colophon {
  max-width: 1360px; width: 100%; margin: 0 auto 0; padding: 22px clamp(0px, 2vw, 24px) clamp(30px, 4vh, 44px);
  border-top: 1px solid rgba(217,180,90,.35);
  display: grid; grid-template-columns: 1fr auto; gap: 24px 48px; align-items: center;
}
.colophon__facts { display: flex; flex-wrap: wrap; gap: 14px 40px; }
.colophon__facts dt { font: 600 11px/1 var(--sans); letter-spacing: .16em; text-transform: uppercase; color: var(--foil); }
html:lang(ja) .colophon__facts dt { letter-spacing: .06em; }
.colophon__facts dd { margin-top: 8px; font-weight: 600; color: #fff; }
.colophon__act { display: flex; align-items: center; gap: 18px; }
.colophon__dl { font-size: 13px; color: var(--on-cover-2); line-height: 1.35; }
.colophon__dl .num { display: block; color: #fff; font-weight: 600; font-size: 15px; }

/* cover entrance: once */
.cover__title-block > * { animation: rise 1s var(--ease) both; }
.cover__title-block > :nth-child(2) { animation-delay: .06s; } .cover__title-block > :nth-child(3) { animation-delay: .14s; }
.cover__title-block > :nth-child(4) { animation-delay: .18s; } .cover__title-block > :nth-child(5) { animation-delay: .24s; }
@keyframes rise { from { opacity: .001; transform: translateY(12px); } }

/* ---------- inside pages ---------- */
.page { padding: var(--sec) 0; }
.page--white { background: var(--paper-w); }
.page--tight { padding: clamp(56px, 6vw, 80px) 0; }
.runhead {
  display: grid; grid-template-columns: auto 1fr auto; align-items: baseline; gap: 20px;
  padding-bottom: 18px; margin-bottom: clamp(36px, 5vw, 64px);
  border-bottom: 3px solid var(--rule); position: relative;
}
.runhead::after { content: ""; position: absolute; left: 0; right: 0; bottom: -7px; height: 1px; background: var(--rule); }
.runhead b { font: 600 clamp(15px, 1.4vw, 18px)/1 var(--serif); color: var(--gold-ink); font-variant-numeric: tabular-nums; }
.runhead h2 { font: 600 clamp(30px, 3.8vw, 50px)/1.12 var(--serif); letter-spacing: -.015em; }
html:lang(ja) .runhead h2 { letter-spacing: .02em; }
.runhead > span { font: 500 15px/1 var(--mincho); letter-spacing: .2em; color: var(--ink-2); }

/* about */
.about { display: grid; gap: clamp(28px, 3vw, 40px); }
.about__lead { font: 500 clamp(24px, 2.7vw, 36px)/1.38 var(--serif); max-width: 34ch; letter-spacing: -.01em; }
html:lang(ja) .about__lead { max-width: 28em; letter-spacing: 0; }
.about__cols { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 4vw, 64px); color: var(--ink-2); max-width: 980px; }
.about .link { justify-self: start; }

/* chapters */
.chapters { list-style: none; padding: 0; }
.chapter {
  display: grid; grid-template-columns: 160px minmax(0, 1.4fr) minmax(0, 1fr); gap: 12px clamp(24px, 4vw, 56px);
  padding: clamp(28px, 3.4vw, 44px) 0; border-bottom: 1px solid var(--rule-2);
}
.chapter:first-child { padding-top: 0; }
.chapter__no { grid-row: span 2; font: 600 14px/1.4 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--gold-ink); padding-top: 6px; }
html:lang(ja) .chapter__no { letter-spacing: .04em; }
.chapter h3 { font: 600 clamp(22px, 2.3vw, 30px)/1.25 var(--serif); }
.chapter__abs { grid-column: 2; color: var(--ink-2); max-width: 60ch; }
.chapter__q { grid-column: 3; grid-row: 1 / span 2; align-self: start; padding: 18px 20px; background: var(--paper); font: 500 16px/1.55 var(--serif); }
.chapter__q span:first-child { display: block; margin-bottom: 8px; font: 600 11px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--gold-ink); }
html:lang(ja) .chapter__q span:first-child { letter-spacing: .04em; }

/* program */
.program { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.program__aside { position: sticky; top: 108px; display: grid; gap: 18px; }
.program__date { display: grid; gap: 4px; }
.program__date .num { font: 600 clamp(40px, 4.6vw, 60px)/1 var(--serif); letter-spacing: -.02em; }
.program__date span:last-child { font-weight: 600; color: var(--gold-ink); }
.program__note { color: var(--ink-2); font-size: 15px; max-width: 36ch; }
.program__aside .link { justify-self: start; }
.timetable { width: 100%; border-collapse: collapse; border-top: 3px solid var(--rule); border-bottom: 3px solid var(--rule); }
.timetable thead th { text-align: left; padding: 12px 16px; font: 600 12px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2); border-bottom: 1px solid var(--rule); }
html:lang(ja) .timetable thead th { letter-spacing: .04em; }
.timetable td { padding: 18px 16px; vertical-align: top; border-bottom: 1px solid var(--rule-2); font-size: 17px; }
.timetable tr:last-child td { border-bottom: 0; }
.timetable td:first-child { width: 128px; font: 600 18px/1.5 var(--serif); color: var(--ink); white-space: nowrap; }
.timetable td > span { font-weight: 600; }
.timetable small { display: block; margin-top: 4px; font-size: 15px; color: var(--ink-2); }
.timetable .is-session td { background: var(--cover); color: #fff; border-bottom-color: var(--cover); }
.timetable .is-session td:first-child { color: var(--foil); }
.timetable .is-session td > span { font: 600 22px/1.3 var(--serif); }
.timetable .is-session small { color: var(--on-cover-2); }
.timetable .is-break td { color: var(--ink-2); }
.timetable .is-break td > span { font-weight: 500; }

/* speakers */
.speakers { display: grid; gap: 28px; }
.speakers__status { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; color: var(--ink-2); }
.authors { list-style: none; padding: 0; border-top: 1px solid var(--rule); }
.authors li { display: grid; grid-template-columns: 64px 1fr 1fr; gap: 24px; padding: 22px 0; border-bottom: 1px solid var(--rule-2); align-items: baseline; }
.authors__sec { font: 600 18px/1 var(--serif); color: var(--gold-ink); }
.authors__name { font: 500 19px/1.4 var(--serif); color: var(--ink-2); }
.authors__aff { font-size: 15px; color: var(--ink-2); }

/* attend */
.attend { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 80px); align-items: start; }
.attend__modes { display: grid; gap: 36px; }
.mode h3 { display: flex; align-items: baseline; gap: 14px; font: 600 clamp(22px, 2.2vw, 28px)/1.3 var(--serif); margin-bottom: 12px; }
.mode__k { display: inline-grid; place-items: center; width: 32px; height: 32px; flex: none; border: 1.5px solid var(--gold-ink); color: var(--gold-ink); font: 600 15px/1 var(--serif); transform: translateY(-3px); }
.mode p { color: var(--ink-2); max-width: 58ch; }
.slip { background: var(--paper-w); border: 1.5px solid var(--rule); box-shadow: 0 24px 48px -36px rgba(20,36,79,.55); }
.slip__head { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding: 22px 26px; border-bottom: 3px double var(--rule); }
.slip__head h3 { display: grid; gap: 4px; font: 600 22px/1.25 var(--serif); }
.slip__head h3 [lang="ja"] { font: 500 13px/1 var(--mincho); letter-spacing: .2em; color: var(--ink-2); }
.slip__rows > div { display: grid; grid-template-columns: 128px 1fr; border-bottom: 1px solid var(--rule-2); }
.slip__rows dt { padding: 16px 26px; font: 600 12px/1.5 var(--sans); letter-spacing: .1em; text-transform: uppercase; color: var(--ink-2); border-right: 1px solid var(--rule-2); }
html:lang(ja) .slip__rows dt { letter-spacing: .02em; }
.slip__rows dd { padding: 14px 22px; font-weight: 500; }
.slip__deadline { font: 600 26px/1.2 var(--serif) !important; color: var(--ink); }
.slip__foot { padding: 24px 26px; display: grid; gap: 14px; justify-items: start; }
.slip__foot p { font-size: 14px; color: var(--ink-2); }

/* news */
.news { display: grid; grid-template-columns: auto 1fr auto; gap: 16px 40px; align-items: center; }
.news__t { display: flex; gap: 16px; align-items: baseline; font: 600 clamp(26px, 2.6vw, 34px)/1.2 var(--serif); }
.news__t [lang="ja"] { font: 500 14px/1 var(--mincho); letter-spacing: .2em; color: var(--ink-2); }
.news__p { color: var(--ink-2); max-width: 52ch; }
.news__fb { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; text-decoration: none; padding: 14px 20px; border: 1.5px solid var(--ink); border-radius: 2px; transition: background-color .3s, color .3s; overflow-wrap: anywhere; }
.news__fb svg { width: 18px; height: 18px; flex: none; }
.news__fb:hover { background: var(--ink); color: #fff; }

/* okuduke / colophon footer */
.okuduke { background: var(--cover-2); color: var(--on-cover); padding: var(--sec) 0 40px; }
.runhead--dark { border-color: var(--foil); }
.runhead--dark::after { background: var(--foil); }
.runhead--dark b { color: var(--foil); }
.runhead--dark > span { color: var(--on-cover-2); }
.okuduke__table { border-bottom: 1px solid rgba(186,196,222,.25); max-width: 880px; }
.okuduke__table > div { display: grid; grid-template-columns: 160px 1fr; gap: 24px; padding: 14px 0; border-top: 1px solid rgba(186,196,222,.25); }
.okuduke__table > div:first-child { border-top: 0; }
.okuduke__table dt { font: 600 12px/1.7 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--foil); }
html:lang(ja) .okuduke__table dt { letter-spacing: .04em; }
.okuduke__table dd { color: var(--on-cover); }
.okuduke__table a { text-decoration-color: var(--foil); text-underline-offset: 5px; }
.pending { color: var(--on-cover-2); }
.okuduke__copy { margin-top: 48px; font-size: 13px; color: var(--on-cover-2); }

.dock { display: none; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .bar__nav { display: none; }
  .lang { margin-left: auto; }
  .chapter { grid-template-columns: 1fr; }
  .chapter__no, .chapter__abs, .chapter__q { grid-column: auto; grid-row: auto; }
  .chapter__q { margin-top: 8px; }
}
@media (max-width: 900px) {
  .cover__grid { grid-template-columns: 1fr; align-items: start; }
  .colophon { grid-template-columns: 1fr; }
  .program, .attend { grid-template-columns: 1fr; }
  .program__aside { position: static; }
  .about__cols { grid-template-columns: 1fr; }
  .news { grid-template-columns: 1fr; justify-items: start; }
}
@media (max-width: 640px) {
  body { font-size: 16px; padding-bottom: 78px; }
  .bar__inner { height: 60px; gap: 12px; }
  html { scroll-padding-top: 68px; }
  .mark__text { font-size: 11.5px; }
  .mark__seal { width: 36px; height: 36px; font-size: 10px; }
  .bar .btn { display: none; }
  .lang button { min-width: 34px; height: 30px; }
  .cover { min-height: auto; display: flex; flex-direction: column; }
  .cover__grid { display: contents; }
  .cover__title-block { order: 1; padding: 32px 0 28px; }
  .colophon { order: 2; padding: 20px 0 28px; }
  .toc { order: 3; margin-bottom: 36px; }
  .cover__ja { font-size: 16px; letter-spacing: .04em; }
  .cover__en { font-size: 12px; letter-spacing: .1em; }
  .cover__theme { margin-top: 20px; }
  .cover__title { font-size: clamp(38px, 11vw, 52px); }
  .colophon__facts { display: grid; gap: 14px; }
  .colophon__act { flex-wrap: wrap; }
  .colophon__act .btn { flex: 1 1 100%; }
  .runhead { grid-template-columns: auto 1fr; }
  .runhead > span { display: none; }
  .timetable td:first-child { width: 84px; font-size: 16px; }
  .timetable td { padding: 14px 10px; }
  .timetable thead th { padding: 10px; }
  .timetable .is-session td > span { font-size: 19px; }
  .authors li { grid-template-columns: 40px 1fr; gap: 4px 16px; }
  .authors__aff { grid-column: 2; }
  .slip__rows > div { grid-template-columns: 1fr; }
  .slip__rows dt { border-right: 0; padding: 14px 20px 0; }
  .slip__rows dd { padding: 4px 20px 14px; }
  .slip__head, .slip__foot { padding-left: 20px; padding-right: 20px; }
  .slip__foot .btn { width: 100%; }
  .okuduke__table > div { grid-template-columns: 1fr; gap: 4px; }
  .dock {
    display: flex; gap: 14px; align-items: center;
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
    background: var(--cover-2); border-top: 1px solid rgba(217,180,90,.4);
  }
  .dock .btn { flex: 1; min-height: 48px; }
  .dock__dl { font-size: 12px; line-height: 1.3; color: var(--on-cover-2); text-align: right; }
  .dock__dl .num { color: #fff; font-weight: 600; font-size: 15px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------- finish-review fixes ---------- */
.cover__annual { color: var(--on-cover-2); letter-spacing: .1em; }
.cover__annual::before { content: "·"; margin-right: 14px; color: var(--foil); }
/* header nav reveals once the cover TOC has scrolled away */
/* menu button + drop panel below 1080px */
.bar__menu { display: none; align-items: center; gap: 8px; height: 36px; padding: 0 12px; border: 1px solid rgba(186,196,222,.35); border-radius: 2px; background: none; color: var(--on-cover); font: 600 13px/1 var(--sans); cursor: pointer; }
.bar__menu svg { width: 16px; height: 16px; }
@media (max-width: 1080px) {
  .bar__menu { display: inline-flex; }
  .bar.is-open .bar__nav {
    display: grid; position: absolute; left: 0; right: 0; top: 100%; gap: 0; margin: 0;
    background: var(--cover-2); border-bottom: 1px solid rgba(217,180,90,.3); padding: 8px var(--g) 20px;
  }
  .bar.is-open .bar__nav a { padding: 14px 0; font-size: 16px; color: var(--on-cover); border-bottom: 1px solid rgba(186,196,222,.15); background: none; }
}
/* discussion question: run-in lead, ruled, not boxed */
.chapter__q { background: none; padding: 14px 0 0; border-top: 1px solid var(--rule-2); }
.chapter__q span:first-child { display: inline; margin: 0 6px 0 0; }
.chapter__q span:first-child::after { content: ":"; }
/* timetable sessions: navy tint band instead of solid slab */
.timetable .is-session td { background: #E6EAF3; color: var(--ink); border-bottom-color: var(--rule-2); }
.timetable .is-session td:first-child { color: var(--gold-ink); }
.timetable .is-session small { color: var(--ink-2); }
/* registration slip: tear-off perforation, no lift */
.slip { position: relative; box-shadow: none; margin-top: 22px; }
.slip::before { content: ""; position: absolute; left: -14px; right: -14px; top: -16px; border-top: 1.5px dashed var(--ink-2); }
.btn--ink[aria-disabled="true"] { background: var(--paper); color: var(--ink-2); box-shadow: inset 0 0 0 1px var(--rule-2); }
@media (max-width: 1080px) {
  .bar__nav { display: none; }
  .chapter { grid-template-columns: 44px 1fr; }
  .chapter__no { grid-column: 1; grid-row: 1 / span 3; padding-top: 2px; font: 600 24px/1.2 var(--serif); letter-spacing: 0; }
  .chapter__no span { display: none; }
  .chapter h3, .chapter__abs, .chapter__q { grid-column: 2; }
}
@media (max-width: 640px) {
  .dock { transform: translateY(110%); transition: transform .4s var(--ease); }
  .cta-gone .dock { transform: none; }
}
.btn[aria-disabled="true"] svg { display: none; }
.cover__runhead > span { white-space: nowrap; }
.cover__runhead { flex-wrap: wrap; row-gap: 8px; }
@media (max-width: 640px) {
  .cover__runja { display: none; }
  .dock { visibility: hidden; transition: transform .4s var(--ease), visibility .4s; }
  .cta-gone .dock { visibility: visible; }
}
@media (max-width: 640px) { .cover__annual::before { content: none; } }
html:lang(ja) .okuduke__table dd > [lang="ja"], html:lang(en) .okuduke__table dd > [lang="en"] { display: none; }
@media (max-width: 1080px) { .bar__menu { margin-left: auto; } .lang { margin-left: 0; } } @media (max-width: 400px) { .bar__menu span { display: none; } .bar__menu { padding: 0 10px; } }