:root {
  --ink: #132019;
  --ink-soft: #314036;
  --paper: #f5f0e6;
  --paper-deep: #e8dfcf;
  --white: #fffdf8;
  --red: #b7242a;
  --red-dark: #83171c;
  --gold: #c89b45;
  --line: rgba(19, 32, 25, .16);
  --shadow: 0 20px 60px rgba(21, 29, 24, .14);
  --shell: min(1180px, calc(100% - 40px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif; font-size: 16px; line-height: 1.8; }
body.nav-open { overflow: hidden; }
img { max-width: 100%; height: auto; }
a { color: inherit; text-underline-offset: .18em; }
button, a { touch-action: manipulation; }
:focus-visible { outline: 3px solid #0b74de; outline-offset: 3px; }
.shell { width: var(--shell); margin-inline: auto; }
.screen-reader-text, .skip-link { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link:focus { z-index: 9999; top: 8px; left: 8px; width: auto; height: auto; clip: auto; padding: 10px 16px; background: #fff; }

.site-header { position: sticky; z-index: 100; top: 0; background: rgba(255,253,248,.98); border-bottom: 1px solid var(--line); transition: box-shadow .25s ease, background-color .25s ease; }
.site-header.is-scrolled { background: rgba(255,253,248,.995); box-shadow: 0 10px 34px rgba(19,32,25,.10); }
.site-header__inner { width: var(--shell); min-height: 80px; margin-inline: auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; transition: min-height .25s ease; }
.site-header.is-scrolled .site-header__inner { min-height: 68px; }
.site-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; line-height: 1.25; }
.site-brand__crest { display: grid; width: 42px; aspect-ratio: 1; place-items: center; color: var(--white); background: var(--red); border-radius: 50%; font-family: serif; font-size: 21px; font-weight: 800; transition: transform .3s cubic-bezier(.2,.8,.2,1), box-shadow .3s ease; }
.site-brand:hover .site-brand__crest { transform: rotate(-6deg) scale(1.06); box-shadow: 0 8px 22px rgba(183,36,42,.24); }
.site-brand strong { display: block; font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: 18px; letter-spacing: .03em; }
.site-brand small { display: block; color: #5a665e; font-size: 11px; letter-spacing: .02em; }
.site-nav { display: flex; align-items: center; gap: 24px; }
.site-nav__list { display: flex; align-items: center; gap: 22px; margin: 0; padding: 0; list-style: none; }
.site-nav__list a { position: relative; min-height: 44px; display: inline-flex; align-items: center; font-size: 14px; font-weight: 700; text-decoration: none; }
.site-nav__list a::after { content: ""; position: absolute; right: 0; bottom: 5px; left: 0; height: 2px; background: var(--red); transform: scaleX(0); transform-origin: right; transition: transform .25s ease; }
.site-nav__list a:hover::after, .site-nav__list a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.site-nav__list a:hover { color: var(--red); }
.nav-toggle { display: none; width: 48px; height: 48px; padding: 12px; border: 0; background: transparent; }
.nav-toggle > span:not(.screen-reader-text) { display: block; height: 2px; margin: 5px 0; background: var(--ink); transition: transform .2s ease, opacity .2s ease; }

.button { position: relative; isolation: isolate; overflow: hidden; min-height: 52px; display: inline-flex; align-items: center; justify-content: center; padding: 13px 24px; color: #fff; background: var(--red); border: 1px solid var(--red); border-radius: 3px; font-weight: 800; text-decoration: none; box-shadow: 0 8px 22px rgba(183,36,42,.24); transition: background .2s ease, transform .2s ease, box-shadow .2s ease; }
.button::after { content: ""; position: absolute; z-index: -1; top: -60%; bottom: -60%; left: -45%; width: 32%; background: rgba(255,255,255,.22); transform: skewX(-20deg) translateX(-250%); transition: transform .5s ease; }
.button:hover::after { transform: skewX(-20deg) translateX(600%); }
.button:hover { background: var(--red-dark); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(131,23,28,.28); }
.button--small { min-height: 44px; padding: 9px 16px; font-size: 14px; }
.button--ghost { color: #fff; border-color: rgba(255,255,255,.65); background: rgba(10,20,14,.2); box-shadow: none; }
.button--ghost:hover { background: rgba(255,255,255,.16); }
.button--light { color: var(--red-dark); background: #fff; border-color: #fff; box-shadow: none; }

.hero { --hero-shift: 0px; position: relative; min-height: calc(100svh - 80px); display: grid; align-items: end; color: #fff; overflow: hidden; isolation: isolate; }
.hero::before { content: ""; position: absolute; z-index: -2; inset: -4%; background-image: var(--hero-image); background-position: 42% center; background-size: cover; transform: translate3d(0, var(--hero-shift), 0) scale(1.08); animation: hero-settle 8s cubic-bezier(.16,1,.3,1) both; will-change: transform; }
.hero__shade { position: absolute; z-index: -1; inset: 0; background: linear-gradient(90deg, rgba(8,15,11,.86) 0%, rgba(8,15,11,.48) 52%, rgba(8,15,11,.12) 100%), linear-gradient(0deg, rgba(8,15,11,.82) 0%, transparent 48%); }
.hero__content { padding-top: 120px; padding-bottom: 190px; }
.eyebrow { margin: 0 0 12px; color: #f1cf8d; font-size: 13px; font-weight: 900; letter-spacing: .18em; }
.eyebrow--dark { color: var(--red); }
.hero h1 { max-width: 900px; margin: 0; font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: clamp(32px, 6.2vw, 78px); line-height: 1.18; letter-spacing: .02em; text-wrap: balance; }
.motion-ready .hero__content > * { animation: hero-content-in .75s cubic-bezier(.16,1,.3,1) both; }
.motion-ready .hero__content > :nth-child(1) { animation-delay: .08s; }
.motion-ready .hero__content > :nth-child(2) { animation-delay: .16s; }
.motion-ready .hero__content > :nth-child(3) { animation-delay: .26s; }
.motion-ready .hero__content > :nth-child(4) { animation-delay: .32s; }
.motion-ready .hero__content > :nth-child(5) { animation-delay: .38s; }
.hero h1 .hero__edition { display: block; margin-bottom: 8px; color: #f1cf8d; font-family: inherit; font-size: .42em; letter-spacing: .08em; }
.hero__title-line { display: block; width: max-content; max-width: 100%; }
.hero__date { margin: 28px 0 0; font-size: clamp(19px, 2vw, 28px); font-weight: 800; }
.hero__place { margin: 0; color: rgba(255,255,255,.8); font-weight: 700; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero__facts { position: absolute; right: 0; bottom: 0; left: 0; display: grid; grid-template-columns: 1.4fr 1fr .8fr; background: rgba(255,253,248,.96); color: var(--ink); box-shadow: var(--shadow); animation: facts-in .8s .42s cubic-bezier(.16,1,.3,1) both; }
.hero__facts > div { min-height: 116px; padding: 24px 28px; border-right: 1px solid var(--line); }
.hero__facts > div:last-child { border-right: 0; }
.hero__facts span { display: block; color: var(--red); font-size: 12px; font-weight: 900; letter-spacing: .08em; }
.hero__facts strong { display: block; margin-top: 4px; font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: clamp(16px, 1.8vw, 24px); line-height: 1.45; }

.announcement { color: #fff; background: var(--red-dark); }
.announcement__inner { min-height: 68px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 22px; }
.announcement__inner strong { padding: 2px 10px; color: var(--red-dark); background: #fff; font-size: 12px; animation: notice-pulse 2.8s ease-in-out infinite; }
.announcement__inner p { margin: 0; font-weight: 700; }
.announcement__inner a { min-height: 44px; display: inline-flex; align-items: center; font-weight: 700; }

.section { padding-block: clamp(72px, 9vw, 128px); }
.section--ink { color: #fff; background: var(--ink); }
.section--paper { background: var(--paper); }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 40px; margin-bottom: 42px; }
.section-heading h2, .section h2 { margin: 0; font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: clamp(32px, 4.5vw, 58px); line-height: 1.3; letter-spacing: .03em; }
.section-heading > p { max-width: 540px; margin: 0 0 8px; color: rgba(255,255,255,.72); }
.section-heading > a { min-height: 44px; display: inline-flex; align-items: center; color: var(--red); font-weight: 800; }

.motion-ready .reveal { opacity: 0; transform: translate3d(0, 32px, 0); transition: opacity .7s cubic-bezier(.16,1,.3,1) var(--reveal-delay, 0ms), transform .7s cubic-bezier(.16,1,.3,1) var(--reveal-delay, 0ms); }
.motion-ready .reveal.is-visible { opacity: 1; transform: translate3d(0, 0, 0); }

.news-list { border-top: 1px solid var(--line); }
.news-item { display: grid; grid-template-columns: 120px 1fr; gap: 24px; align-items: baseline; padding: 22px 4px; border-bottom: 1px solid var(--line); transition: padding-left .22s ease, background-color .22s ease; }
.news-item:hover { padding-left: 14px; background: rgba(183,36,42,.035); }
.news-item time { color: #667069; font-size: 14px; font-variant-numeric: tabular-nums; }
.news-item h2, .news-item h3 { margin: 0; font-size: 17px; line-height: 1.65; }
.news-item a { text-decoration: none; }
.news-item a:hover { color: var(--red); text-decoration: underline; }

.overview-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.15); }
.overview-card { min-height: 210px; padding: 30px; background: #1a2920; transition: background-color .28s ease, transform .28s cubic-bezier(.2,.8,.2,1); }
.overview-card:hover { z-index: 1; background: #22372a; transform: translateY(-6px); }
.overview-card--large { grid-column: span 2; }
.overview-card--wide { grid-column: span 2; }
.overview-card span { display: block; color: #efc97e; font-size: 12px; font-weight: 900; letter-spacing: .12em; }
.overview-card strong { display: block; margin-top: 28px; font-family: "Yu Mincho", "Hiragino Mincho ProN", serif; font-size: clamp(24px, 3vw, 38px); line-height: 1.4; }
.overview-card p, .overview-card small { display: block; margin: 12px 0 0; color: rgba(255,255,255,.66); }
.outline-note { max-width: 860px; margin-top: 48px; padding-left: 28px; border-left: 3px solid var(--gold); }
.outline-note h3 { margin: 0 0 8px; font-size: 18px; }
.outline-note p { margin: 0; color: rgba(255,255,255,.72); }

.empty-state { min-height: 320px; display: grid; place-content: center; padding: 48px; text-align: center; background: var(--paper); border: 1px solid var(--paper-deep); }
.empty-state span { color: var(--red); font-family: serif; font-size: 66px; font-weight: 800; line-height: 1; opacity: .22; }
.empty-state h3 { margin: 16px 0 6px; font-family: "Yu Mincho", serif; font-size: 26px; }
.empty-state p { margin: 0; color: #5f685f; }
.schedule-embed { min-height: 320px; }

.split { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: clamp(48px, 8vw, 120px); align-items: start; }
.split > div:first-child > p:last-child { max-width: 520px; color: var(--ink-soft); }
.resource-list { border-top: 1px solid var(--line); }
.resource { min-height: 86px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line); text-decoration: none; transition: padding-left .24s ease, color .24s ease; }
.resource:not([aria-disabled="true"]):hover { padding-left: 12px; color: var(--red); }
.resource span { font-weight: 800; }
.resource strong { color: var(--red); font-size: 13px; }
.resource[aria-disabled="true"] { color: #7a807b; cursor: default; pointer-events: none; }
.resource[aria-disabled="true"] strong { color: #7a807b; }

.venue-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.venue { min-height: 300px; display: flex; flex-direction: column; justify-content: end; padding: clamp(28px, 5vw, 52px); color: #fff; background: linear-gradient(145deg, #233629, #101b14); position: relative; overflow: hidden; transition: transform .3s cubic-bezier(.2,.8,.2,1), box-shadow .3s ease; }
.venue:hover { transform: translateY(-7px); box-shadow: var(--shadow); }
.venue::before { content: ""; position: absolute; top: -80px; right: -80px; width: 240px; aspect-ratio: 1; border: 1px solid rgba(255,255,255,.11); border-radius: 50%; box-shadow: 0 0 0 32px rgba(255,255,255,.035), 0 0 0 64px rgba(255,255,255,.025); transition: transform .5s cubic-bezier(.2,.8,.2,1); }
.venue:hover::before { transform: translate(-14px, 14px) scale(1.08); }
.venue p { margin: 0; color: #efc97e; font-size: 12px; font-weight: 900; letter-spacing: .12em; }
.venue h3 { margin: 10px 0; font-family: "Yu Mincho", serif; font-size: clamp(24px, 3vw, 36px); }
.venue address { color: rgba(255,255,255,.7); font-style: normal; }
.venue a { min-height: 44px; display: inline-flex; align-items: center; align-self: flex-start; margin-top: 22px; font-weight: 800; }

.cta { padding-block: clamp(64px, 8vw, 100px); color: #fff; background: var(--red); }
.cta__inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.cta h2 { margin: 0; font-family: "Yu Mincho", serif; font-size: clamp(34px, 5vw, 64px); line-height: 1.25; }
.cta p { margin-bottom: 0; }
.cta__inner > div:last-child { display: flex; flex-direction: column; align-items: stretch; gap: 16px; min-width: 260px; text-align: center; }
.text-link { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; }

.sponsors h2 { margin-bottom: 36px; }
.sponsor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.sponsor-grid a { min-height: 120px; display: grid; place-items: center; padding: 18px; border: 1px solid var(--line); background: #fff; }
.sponsor-grid img { max-height: 72px; width: auto; object-fit: contain; }

.site-footer { padding: 64px 0 22px; color: rgba(255,255,255,.72); background: #0b120e; }
.site-footer__inner { width: var(--shell); display: flex; justify-content: space-between; gap: 40px; margin-inline: auto; }
.site-footer__title { margin: 0; color: #fff; font-family: "Yu Mincho", serif; font-size: 23px; line-height: 1.45; }
.site-footer__title span { font-size: 15px; }
.site-footer a { color: #fff; }
.site-footer__contact { text-align: right; }
.site-footer__contact p { margin-top: 0; }
.site-footer__copyright { width: var(--shell); margin: 46px auto 0; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); font-size: 12px; }

.content-layout { min-height: 65vh; max-width: 900px; }
.page-header { margin-bottom: 48px; }
.page-header h1 { margin: 0; font-family: "Yu Mincho", serif; font-size: clamp(36px, 5vw, 62px); line-height: 1.3; }
.entry-content { font-size: 17px; }
.entry-content h2 { margin-top: 2.2em; font-size: 30px; }
.entry-content h3 { margin-top: 2em; font-size: 22px; }
.entry-content table { width: 100%; border-collapse: collapse; }
.entry-content th, .entry-content td { padding: 14px; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.entry-content th { background: var(--paper); }

@keyframes hero-settle {
  from { transform: translate3d(0, calc(var(--hero-shift) - 16px), 0) scale(1.16); }
  to { transform: translate3d(0, var(--hero-shift), 0) scale(1.08); }
}
@keyframes hero-content-in {
  from { opacity: 0; transform: translate3d(0, 28px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}
@keyframes facts-in {
  from { opacity: 0; transform: translate3d(0, 36px, 0); }
  to { opacity: 1; transform: translate3d(0, 0, 0); }
}
@keyframes notice-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}

@media (max-width: 1000px) {
  .nav-toggle { display: block; }
  .site-nav { position: fixed; top: 80px; right: 0; bottom: 0; width: min(390px, 100%); display: none; flex-direction: column; align-items: stretch; padding: 24px; background: var(--white); box-shadow: -20px 20px 60px rgba(0,0,0,.18); }
  .site-nav.is-open { display: flex; }
  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav__list li { border-bottom: 1px solid var(--line); }
  .site-nav__list a { min-height: 56px; width: 100%; }
  .nav-toggle[aria-expanded="true"] > span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] > span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] > span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero { min-height: 820px; }
  .hero__content { padding-bottom: 260px; }
  .hero__facts { grid-template-columns: 1fr; }
  .hero__facts > div { min-height: auto; padding: 17px 22px; border-right: 0; border-bottom: 1px solid var(--line); }
  .overview-grid { grid-template-columns: 1fr 1fr; }
  .overview-card--large, .overview-card--wide { grid-column: span 2; }
}

@media (max-width: 720px) {
  :root { --shell: min(100% - 28px, 1180px); }
  .site-header__inner { min-height: 70px; }
  .site-nav { top: 70px; }
  .site-brand small { display: none; }
  .site-brand strong { font-size: 15px; }
  .hero { min-height: 760px; background-position: 38% center; }
  .hero__content { padding-top: 82px; padding-bottom: 264px; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .announcement__inner { grid-template-columns: auto 1fr; padding-block: 12px; line-height: 1.5; }
  .announcement__inner a { grid-column: 2; min-height: auto; }
  .section-heading { align-items: start; flex-direction: column; gap: 16px; }
  .news-item { grid-template-columns: 1fr; gap: 4px; }
  .overview-grid { grid-template-columns: 1fr; }
  .overview-card, .overview-card--large, .overview-card--wide { grid-column: auto; min-height: 180px; }
  .split, .venue-grid { grid-template-columns: 1fr; }
  .cta__inner { align-items: stretch; flex-direction: column; }
  .sponsor-grid { grid-template-columns: 1fr 1fr; }
  .site-footer__inner { flex-direction: column; }
  .site-footer__contact { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
  .motion-ready .reveal { opacity: 1 !important; transform: none !important; }
  .hero::before { transform: scale(1.08) !important; }
}