:root {
  --ink: #172925;
  --paper: #f7f2e8;
  --white: #fffdf8;
  --green: #316f57;
  --green-deep: #173d32;
  --yellow: #f2c94c;
  --orange: #ef7553;
  --blue: #97c9d5;
  --line: rgba(23, 41, 37, 0.19);
  --max: 1200px;
  --radius: 1.75rem;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 14px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Hiragino Sans", "Yu Gothic", "YuGothic", "Noto Sans JP", sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.wrap { width: min(calc(100% - 48px), var(--max)); margin-inline: auto; }
.section { padding-block: clamp(90px, 12vw, 170px); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: 0; left: 1rem; z-index: 1000; padding: .7rem 1rem;
  transform: translateY(-120%); background: var(--ink); color: #fff; border-radius: 0 0 .5rem .5rem;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: absolute; z-index: 50; top: 0; left: 0; width: 100%; height: 96px;
  display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(24px, 4vw, 64px);
  border-bottom: 1px solid rgba(23, 41, 37, .13);
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark { width: 44px; height: 44px; position: relative; display: block; transform: rotate(-6deg); }
.brand-mark span { position: absolute; display: block; border-radius: 50%; }
.brand-mark span:nth-child(1) { width: 30px; height: 30px; left: 0; top: 1px; background: var(--green); }
.brand-mark span:nth-child(2) { width: 24px; height: 24px; right: 0; bottom: 0; background: var(--yellow); mix-blend-mode: multiply; }
.brand-mark span:nth-child(3) { width: 9px; height: 9px; left: 8px; top: 11px; background: var(--paper); }
.brand-text { display: grid; line-height: 1.05; }
.brand-text strong { font-size: 1.05rem; letter-spacing: -.03em; }
.brand-text small { margin-top: 4px; font-size: .67rem; letter-spacing: .22em; font-weight: 700; }
.site-nav { display: flex; align-items: center; gap: clamp(18px, 2.5vw, 36px); }
.site-nav a { text-decoration: none; font-size: .78rem; font-weight: 700; letter-spacing: .05em; }
.site-nav a:not(.nav-cta) { position: relative; }
.site-nav a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; bottom: -7px; width: 100%; height: 2px;
  background: var(--green); transform: scaleX(0); transform-origin: right; transition: transform .25s ease;
}
.site-nav a:hover::after, .site-nav a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.nav-cta { padding: .72rem 1.1rem; color: #fff; background: var(--ink); border-radius: 99px; }
.menu-button { display: none; border: 0; background: transparent; padding: 10px; }

.hero {
  position: relative; min-height: 840px; height: min(94vh, 940px); overflow: hidden;
  display: flex; align-items: center; background: var(--paper); border-bottom: 1px solid var(--line);
}
.hero::after {
  content: ""; position: absolute; inset: 96px 0 0 52%;
  background: var(--green); border-radius: 40% 0 0 0;
}
.hero-copy { position: relative; z-index: 5; padding-right: 49%; padding-top: 70px; }
.eyebrow, .section-number { margin: 0 0 28px; font-size: .7rem; font-weight: 800; letter-spacing: .18em; }
.eyebrow { display: flex; align-items: center; gap: 10px; }
.eyebrow span { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); }
.hero h1 {
  margin: 0; font-size: clamp(3rem, 6vw, 5.4rem); line-height: .98; letter-spacing: -.065em;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif; font-weight: 800;
}
.hero h1 em { color: var(--green); font-style: normal; }
.hero-lead { margin: 40px 0 0; max-width: 560px; font-size: clamp(.98rem, 1.2vw, 1.12rem); font-weight: 600; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button {
  display: inline-flex; align-items: center; justify-content: space-between; gap: 26px; min-height: 56px;
  padding: .85rem 1.45rem; border: 1px solid transparent; border-radius: 99px; text-decoration: none;
  font-size: .84rem; font-weight: 800; transition: transform .2s ease, background-color .2s ease, color .2s ease;
}
.button:hover { transform: translateY(-3px); }
.button-primary { color: #fff; background: var(--ink); }
.button-quiet { border-color: var(--line); }
.hero-card {
  position: absolute; z-index: 6; right: clamp(28px, 6vw, 95px); bottom: clamp(68px, 10vh, 110px);
  width: min(390px, 34vw); padding: 32px; color: var(--ink); background: var(--yellow);
  border-radius: 4px 44px 4px 4px; box-shadow: 14px 14px 0 rgba(23, 61, 50, .42); transform: rotate(1.5deg);
}
.hero-card-label { margin: 0 0 16px; font-size: .68rem; font-weight: 900; letter-spacing: .16em; }
.hero-card dl { margin: 0; }
.hero-card dl div { display: grid; grid-template-columns: 70px 1fr; gap: 16px; padding: 13px 0; border-top: 1px solid rgba(23, 41, 37, .22); }
.hero-card dt { font-size: .62rem; letter-spacing: .14em; font-weight: 900; }
.hero-card dd { margin: 0; font-weight: 800; }
.season-note { display: flex; gap: 8px; margin: 18px 0 0; font-size: .74rem; font-weight: 700; }
.season-note span { color: var(--orange); }
.season-note b { font-weight: 700; }
.hero-art { position: absolute; z-index: 3; inset: 96px 0 0 52%; overflow: hidden; pointer-events: none; }
.orbit { position: absolute; border: 1px solid rgba(255,255,255,.45); border-radius: 50%; }
.orbit-one { width: 600px; height: 600px; top: -190px; right: -150px; }
.orbit-two { width: 380px; height: 380px; top: -80px; right: -40px; }
.pixel { position: absolute; width: 28px; height: 28px; background: var(--yellow); }
.pixel-a { left: 18%; top: 20%; transform: rotate(14deg); }
.pixel-b { right: 12%; top: 48%; width: 16px; height: 16px; background: var(--blue); }
.pixel-c { left: 37%; bottom: 16%; width: 12px; height: 12px; background: var(--orange); }
.cursor-shape {
  position: absolute; left: 22%; top: 24%; width: 190px; height: 250px; background: var(--white);
  clip-path: polygon(8% 3%, 91% 61%, 59% 68%, 45% 98%); transform: rotate(-13deg); opacity: .94;
  filter: drop-shadow(18px 22px 0 rgba(23,61,50,.35));
}
.scroll-cue {
  position: absolute; z-index: 7; left: 26px; bottom: 34px; margin: 0; writing-mode: vertical-rl;
  font-size: .57rem; letter-spacing: .2em; font-weight: 800;
}
.scroll-cue span { display: inline-block; width: 1px; height: 36px; margin-top: 8px; background: var(--ink); }

.section-heading { display: grid; grid-template-columns: minmax(150px, 1fr) 2fr; align-items: start; gap: 40px; }
.section-heading h2 {
  margin: 0; font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
  font-size: clamp(2.3rem, 4.4vw, 4.5rem); line-height: 1.1; letter-spacing: -.05em;
}
.section-heading h2 span { color: var(--green); }
.intro-body { width: min(720px, 66%); margin: 80px 0 0 auto; }
.intro-large { margin: 0 0 30px; font-size: clamp(1.1rem, 1.5vw, 1.45rem); line-height: 1.75; font-weight: 750; letter-spacing: .02em; }
.intro-body > p:not(.intro-large) { max-width: 600px; color: #47605a; }
.word-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 42px; }
.word-cloud span { padding: .45rem .85rem; border: 1px solid var(--line); border-radius: 99px; font-size: .64rem; font-weight: 900; letter-spacing: .1em; }
.word-cloud span:nth-child(3n+1) { color: #fff; background: var(--green); border-color: var(--green); }

.schedule { color: #fff; background: var(--green-deep); }
.section-heading-light .section-number { color: var(--yellow); }
.section-heading-light h2 span { color: var(--yellow); }
.event-layout { display: grid; grid-template-columns: .9fr 1.2fr; gap: clamp(50px, 8vw, 110px); margin-top: 80px; align-items: start; }
.date-card { position: sticky; top: 32px; padding: clamp(30px, 5vw, 54px); color: var(--ink); background: var(--yellow); border-radius: 3px 50px 3px 3px; box-shadow: 18px 18px 0 #285844; }
.date-card-kicker { margin: 0 0 54px; font-size: .65rem; font-weight: 900; letter-spacing: .2em; }
.date-display { display: flex; align-items: baseline; flex-wrap: wrap; line-height: .85; }
.date-year { flex-basis: 100%; margin-bottom: 10px; font-size: .88rem; letter-spacing: .16em; font-weight: 900; }
.date-month, .date-day { font-size: clamp(3.2rem, 5.5vw, 5rem); letter-spacing: -.07em; }
.date-slash { margin-inline: 8px; font-size: 2.6rem; font-weight: 200; }
.date-weekday { margin-left: 12px; font-weight: 900; }
.date-message { margin: 34px 0 0; padding-top: 16px; border-top: 1px solid rgba(23,41,37,.28); font-size: .82rem; font-weight: 800; }
.detail-list { margin: 0; }
.detail-list > div { display: grid; grid-template-columns: 130px 1fr; gap: 20px; padding: 26px 0; border-top: 1px solid rgba(255,255,255,.2); }
.detail-list dt { font-size: .8rem; font-weight: 800; }
.detail-list dt span { display: inline-block; margin-right: 12px; color: var(--yellow); font-size: .63rem; }
.detail-list dd { margin: 0; display: grid; gap: 6px; }
.detail-list dd strong { font-size: 1.12rem; }
.detail-list dd small { color: rgba(255,255,255,.67); font-size: .76rem; }
.upcoming-sessions { display: grid; grid-template-columns: 1fr 1.45fr; gap: 26px; margin-top: 36px; padding: 28px; border: 1px solid rgba(255,255,255,.22); border-radius: 2px 28px 2px 2px; }
.upcoming-heading p { margin: 0 0 8px; color: var(--yellow); font-size: .62rem; font-weight: 900; letter-spacing: .18em; }
.upcoming-heading h3 { margin: 0; font-size: 1.14rem; }
.upcoming-heading small { display: block; margin-top: 8px; color: rgba(255,255,255,.62); font-size: .68rem; line-height: 1.65; }
.upcoming-sessions ol { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin: 0; padding: 0; list-style: none; }
.upcoming-sessions li { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; padding: 10px 12px; color: var(--ink); background: var(--paper); }
.upcoming-sessions li strong { font-size: 1.05rem; }
.upcoming-sessions li span { font-size: .62rem; font-weight: 800; color: #53645f; }
.notice-card { display: flex; gap: 20px; margin-top: 38px; padding: 28px; color: var(--ink); background: var(--blue); border-radius: 2px 28px 2px 2px; }
.notice-icon { display: grid; place-items: center; flex: 0 0 46px; height: 46px; border: 1px solid rgba(23,41,37,.3); border-radius: 50%; font-size: 1.3rem; }
.notice-card strong { font-size: .98rem; }
.notice-card p { margin: 6px 0 0; font-size: .78rem; line-height: 1.7; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 80px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.step { position: relative; min-height: 390px; padding: 34px; border-right: 1px solid var(--line); }
.step:first-child { border-left: 1px solid var(--line); }
.step-number { position: absolute; top: 22px; right: 26px; font-size: .65rem; font-weight: 900; letter-spacing: .15em; }
.step-icon { display: grid; place-items: center; width: 90px; height: 90px; margin: 45px 0 38px; border: 1px solid var(--ink); border-radius: 50%; font-size: 2.1rem; }
.step h3 { margin: 0 0 14px; font-size: 1.2rem; }
.step p { margin: 0; color: #53645f; font-size: .88rem; }
.inline-link { display: inline-flex; gap: 10px; margin-top: 22px; font-size: .8rem; font-weight: 900; text-underline-offset: 5px; }
.inline-link[hidden] { display: none; }
.step-accent { background: var(--yellow); }
.step-accent p { color: var(--ink); }

.access { display: grid; grid-template-columns: 1.1fr .9fr; padding: 0; background: var(--white); }
.map-panel { position: relative; min-height: 720px; overflow: hidden; background: #bcd7d1; }
.map-panel iframe { display: block; width: 100%; height: 100%; min-height: 720px; border: 0; filter: saturate(.78) contrast(.96); }
.map-grid { position: absolute; inset: 0; opacity: .36; background-image: linear-gradient(rgba(23,41,37,.15) 1px, transparent 1px), linear-gradient(90deg, rgba(23,41,37,.15) 1px, transparent 1px); background-size: 42px 42px; transform: rotate(8deg) scale(1.2); }
.map-road { position: absolute; height: 22px; background: var(--paper); border: 1px solid rgba(23,41,37,.14); border-radius: 99px; }
.road-one { width: 120%; top: 25%; left: -10%; transform: rotate(-18deg); }
.road-two { width: 90%; bottom: 17%; right: -17%; transform: rotate(32deg); }
.map-river { position: absolute; width: 65%; height: 140%; left: -22%; top: -15%; border-right: 60px solid rgba(49,111,87,.34); border-radius: 50%; transform: rotate(15deg); }
.map-pin { position: absolute; left: 58%; top: 42%; width: 74px; height: 86px; background: var(--orange); border: 8px solid var(--white); border-radius: 50% 50% 50% 0; transform: rotate(-45deg); box-shadow: 8px 10px 0 rgba(23,41,37,.18); }
.map-pin span { position: absolute; inset: 19px; background: var(--white); border-radius: 50%; }
.map-panel p { position: absolute; left: calc(58% + 95px); top: 40%; margin: 0; font-size: .68rem; font-weight: 900; letter-spacing: .12em; line-height: 1.4; }
.access-copy { padding: clamp(70px, 9vw, 130px) clamp(36px, 7vw, 110px); }
.access-copy h2 { margin: 0; font-family: "Hiragino Mincho ProN", "Yu Mincho", serif; font-size: clamp(2rem, 3.5vw, 3.5rem); line-height: 1.18; letter-spacing: -.05em; }
.access-copy h2 b { font-weight: inherit; }
.access-copy h2 span { color: var(--green); }
.access-copy address { display: grid; gap: 12px; margin: 64px 0 30px; font-style: normal; }
.access-copy address strong { font-size: 1.25rem; }
.access-copy address span { color: #53645f; font-size: .9rem; }
.button-dark { width: min(100%, 280px); color: #fff; background: var(--green-deep); }
.access-note { margin: 24px 0 0; color: #697772; font-size: .72rem; }

.faq { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(50px, 8vw, 110px); }
.faq .section-heading { display: block; }
.faq .section-heading h2 { font-size: clamp(2.2rem, 3.5vw, 3.5rem); }
.accordion { border-top: 1px solid var(--line); }
.accordion details { border-bottom: 1px solid var(--line); }
.accordion summary { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 26px 4px; cursor: pointer; list-style: none; font-weight: 800; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary span { flex: 0 0 auto; font-size: 1.3rem; color: var(--green); }
.accordion details p { margin: 0; padding: 0 48px 30px 4px; color: #53645f; font-size: .88rem; }

.closing { position: relative; min-height: 620px; display: grid; place-items: center; overflow: hidden; padding: 80px 24px; text-align: center; color: #fff; background: var(--green); }
.closing::before, .closing::after { content: ""; position: absolute; border: 1px solid rgba(255,255,255,.22); border-radius: 50%; }
.closing::before { width: 560px; height: 560px; left: -180px; top: -180px; }
.closing::after { width: 430px; height: 430px; right: -120px; bottom: -180px; }
.closing > div { position: relative; z-index: 2; }
.closing p { margin: 0 0 12px; color: var(--yellow); font-size: .66rem; font-weight: 900; letter-spacing: .2em; }
.closing h2 { margin: 0 0 38px; font-family: "Hiragino Mincho ProN", "Yu Mincho", serif; font-size: clamp(2.3rem, 4.8vw, 4.8rem); line-height: 1.14; letter-spacing: -.05em; }
.closing-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.button-light { color: var(--ink); background: var(--yellow); }
.button-outline-light { color: #fff; border-color: rgba(255,255,255,.7); background: transparent; }
.closing-code { position: absolute; right: 5%; top: 14%; color: rgba(255,255,255,.18) !important; font-size: clamp(1.8rem, 5vw, 5rem) !important; transform: rotate(7deg); }
.site-footer { display: grid; grid-template-columns: 1fr 1fr auto; align-items: center; gap: 30px; padding: 40px clamp(24px, 5vw, 70px); color: #fff; background: var(--ink); }
.footer-brand { display: grid; line-height: 1.2; }
.footer-brand strong { font-size: 1.15rem; }
.footer-brand span { font-size: .68rem; letter-spacing: .18em; }
.site-footer p { margin: 0; font-size: .75rem; color: rgba(255,255,255,.7); }
.copyright { text-align: right; }

@media (max-width: 980px) {
  .site-nav { position: absolute; top: 80px; left: 18px; right: 18px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 18px; background: var(--white); border: 1px solid var(--line); box-shadow: 0 18px 50px rgba(23,41,37,.16); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 12px; }
  .nav-cta { margin-top: 8px; text-align: center; }
  .menu-button { display: grid; gap: 5px; }
  .menu-button span:not(.sr-only) { width: 24px; height: 2px; background: var(--ink); }
  .hero { height: auto; min-height: 920px; align-items: flex-start; padding-top: 190px; }
  .hero::after, .hero-art { inset: auto 0 0 36%; height: 45%; border-radius: 42% 0 0 0; }
  .hero-copy { padding: 0 24px 400px; }
  .hero-card { right: 28px; bottom: 54px; width: min(400px, 56vw); }
  .event-layout { grid-template-columns: 1fr; }
  .date-card { position: static; width: min(560px, 100%); }
  .upcoming-sessions { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .step { min-height: 300px; border-left: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .access { grid-template-columns: 1fr; }
  .map-panel { min-height: 480px; }
  .faq { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .wrap { width: min(calc(100% - 32px), var(--max)); }
  .site-header { height: 78px; padding-inline: 18px; }
  .brand-mark { width: 38px; height: 38px; }
  .site-nav { top: 68px; }
  .hero { min-height: 860px; padding-top: 145px; }
  .hero h1 { font-size: clamp(2.6rem, 13vw, 3.8rem); }
  .hero-lead br { display: none; }
  .hero::after, .hero-art { inset: auto 0 0 16%; height: 41%; }
  .hero-copy { padding: 0 16px 390px; }
  .hero-card { right: 20px; bottom: 38px; width: calc(100% - 58px); padding: 24px; }
  .hero-card dl div { grid-template-columns: 58px 1fr; }
  .scroll-cue { display: none; }
  .section-heading { display: block; }
  .section-heading h2 { font-size: clamp(2.1rem, 9.5vw, 3rem); }
  .intro-body { width: 100%; margin-top: 54px; }
  .intro-large { font-size: 1.08rem; }
  .event-layout { margin-top: 54px; }
  .date-card { padding: 28px 24px; }
  .date-card-kicker { margin-bottom: 34px; }
  .date-month, .date-day { font-size: 3.5rem; }
  .detail-list > div { grid-template-columns: 1fr; gap: 8px; }
  .upcoming-sessions ol { grid-template-columns: 1fr; }
  .notice-card { padding: 22px; }
  .steps { margin-top: 54px; }
  .step { padding: 28px; }
  .map-panel { min-height: 390px; }
  .map-panel iframe { min-height: 390px; }
  .map-panel p { left: 22px; top: auto; bottom: 22px; }
  .access-copy { padding: 76px 24px; }
  .faq { gap: 52px; }
  .site-footer { grid-template-columns: 1fr; }
  .copyright { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}