:root {
  --navy: #031426;
  --navy-light: #0a2744;
  --gold: #d7a84b;
  --gold-light: #f5d985;
  --paper: #fbfaf6;
  --blue: #073b82;
  --pink: #f5278b;
  --ink: #152234;
  --serif: "Noto Serif JP", "Yu Mincho", serif;
  --sans: "Noto Sans JP", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.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;
}
.page-noise {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: .045;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.7'/%3E%3C/svg%3E");
}
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 90;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  padding: 0 4vw;
  color: #fff;
  transition: background .3s, height .3s, box-shadow .3s;
}
.site-header.scrolled {
  height: 64px;
  background: rgba(3, 20, 38, .94);
  box-shadow: 0 8px 30px rgba(0, 0, 0, .18);
  backdrop-filter: blur(12px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: .16em;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  aspect-ratio: 1;
  color: var(--gold-light);
  border: 1px solid rgba(245, 217, 133, .7);
  border-radius: 50%;
  font-size: 13px;
  letter-spacing: 0;
}
.desktop-nav { display: flex; align-items: center; gap: clamp(18px, 2.5vw, 34px); font-size: 13px; }
.desktop-nav a { transition: color .2s; }
.desktop-nav a:hover { color: var(--gold-light); }
.nav-cta { padding: 11px 20px; border: 1px solid var(--gold); border-radius: 2px; }
.menu-button, .mobile-nav { display: none; }

.dark-section { color: #fff; background-color: var(--navy); }
.hero {
  position: relative;
  display: grid;
  min-height: clamp(420px, 56.25vw, 100svh);
  place-items: center;
  overflow: hidden;
  isolation: isolate;
  background: #020b14;
}
.hero::after {
  content: "";
  position: absolute;
  z-index: 3;
  inset: auto 0 0;
  height: clamp(72px, 14vw, 190px);
  background: linear-gradient(180deg, rgba(2,11,20,0), rgba(2,11,20,.18) 30%, rgba(2,11,20,.78) 72%, #020b14 100%);
  pointer-events: none;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(180deg, rgba(2, 11, 20, .03), rgba(2, 11, 20, .08) 72%, #020b14 100%),
    url("img/anniversary-hero-3840-v2.jpg?v=20260617-2111") center / cover no-repeat;
  transform-origin: center;
  will-change: transform;
}
.hero-starfield,
.hero-foil-sweep {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-starfield {
  z-index: 1;
  mix-blend-mode: screen;
  opacity: .72;
}
.hero-foil-sweep {
  z-index: 2;
  overflow: hidden;
  opacity: .85;
}
.hero-foil-sweep::before {
  content: "";
  position: absolute;
  top: 17%;
  left: -42%;
  width: 34%;
  height: 58%;
  background: linear-gradient(105deg, transparent 0%, rgba(255, 247, 188, .02) 22%, rgba(255, 247, 188, .18) 44%, rgba(215, 168, 75, .42) 50%, rgba(255, 247, 188, .12) 57%, transparent 78%);
  filter: blur(12px);
  transform: skewX(-17deg);
  animation: foilSweep 8.8s cubic-bezier(.19, 1, .22, 1) 1.1s infinite;
}
@keyframes foilSweep {
  0%, 18% { left: -42%; opacity: 0; }
  30% { opacity: .9; }
  58%, 100% { left: 108%; opacity: 0; }
}
.hero-orbit {
  position: absolute;
  z-index: -1;
  border: 1px solid rgba(215, 168, 75, .28);
  border-radius: 50%;
  will-change: transform;
}
.hero-orbit,
.gold-dust { display: none; }
.orbit-one { width: 54vw; aspect-ratio: 1; left: -33vw; top: 8vh; box-shadow: 0 0 0 30px rgba(215, 168, 75, .025), 0 0 0 60px rgba(215, 168, 75, .015); }
.orbit-two { width: 30vw; aspect-ratio: 1; right: -14vw; bottom: 5vh; }
.gold-dust {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: .6;
  background-image:
    radial-gradient(circle, var(--gold) 0 1px, transparent 1.5px),
    radial-gradient(circle, var(--gold-light) 0 1px, transparent 1.5px);
  background-position: 0 0, 13px 17px;
  background-size: 73px 79px, 97px 89px;
  mask-image: linear-gradient(105deg, transparent 20%, #000 75%, transparent);
}
.hero-content {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.eyebrow, .section-label {
  margin: 0 0 22px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .3em;
  text-transform: uppercase;
}
.eyebrow { color: var(--gold-light); }
.hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(46px, 8vw, 112px);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: .06em;
  text-shadow: 0 4px 35px rgba(0, 0, 0, .35);
}
.hero h1 span:not(.hero-kicker) { color: var(--gold-light); }
.hero-kicker {
  display: block;
  margin-bottom: 18px;
  color: #fff;
  font-family: var(--sans);
  font-size: clamp(14px, 1.6vw, 20px);
  font-weight: 500;
  letter-spacing: .36em;
}
.hero-lead { margin: 34px auto 0; color: rgba(255,255,255,.75); font-family: var(--serif); font-size: clamp(15px, 1.5vw, 20px); line-height: 2; letter-spacing: .08em; }
.hero-date { display: flex; align-items: center; justify-content: center; gap: 18px; margin-top: 30px; color: var(--gold-light); letter-spacing: .2em; }
.hero-date strong { font-family: var(--serif); font-size: clamp(36px, 5vw, 64px); font-weight: 400; letter-spacing: .05em; }
.hero-date span { font-size: 11px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 210px;
  min-height: 54px;
  padding: 14px 25px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
  transition: transform .25s, box-shadow .25s, background .25s;
}
.button:hover { transform: translateY(-3px); }
.button-gold { color: #071524; background: linear-gradient(135deg, var(--gold-light), var(--gold)); box-shadow: 0 12px 32px rgba(215,168,75,.16); }
.button-ghost { color: #fff; border-color: rgba(255,255,255,.35); background: rgba(255,255,255,.03); }
.button-pink { color: #fff; background: var(--pink); box-shadow: 0 12px 30px rgba(245,39,139,.2); }
.button-blue { color: #fff; background: var(--blue); box-shadow: 0 12px 30px rgba(7,59,130,.2); }
.section-inner { position: relative; z-index: 2; width: min(1180px, 88vw); margin: 0 auto; }
.section-title { margin: 0; font-family: var(--serif); font-size: clamp(40px, 6vw, 78px); font-weight: 600; line-height: 1.28; letter-spacing: .05em; }
.section-copy { max-width: 750px; margin: 32px 0 0; font-family: var(--serif); font-size: clamp(15px, 1.5vw, 18px); line-height: 2.15; }
.story-section { position: relative; overflow: hidden; padding: 145px 0 130px; background: #f3efe4; }
.story-section::before { content:""; position:absolute; inset:0; background: radial-gradient(circle at 10% 10%, rgba(215,168,75,.12), transparent 24%), radial-gradient(circle at 90% 80%, rgba(7,59,130,.1), transparent 28%); }
.story-inner { text-align: center; }
.story-inner .section-copy { margin-left: auto; margin-right: auto; text-align: center; }
.story-line { position: absolute; top: 0; left: 50%; width: 1px; height: 85px; background: var(--gold); }
.story-cards { display: grid; grid-template-columns: 1fr 140px 1fr; align-items: center; gap: 20px; margin-top: 75px; text-align: left; }
.story-card { position: relative; display: flex; min-height: 270px; flex-direction: column; justify-content: center; padding: 45px; overflow: hidden; box-shadow: 0 24px 70px rgba(3,20,38,.12); }
.story-card::after { content:""; position:absolute; width:180px; aspect-ratio:1; right:-60px; bottom:-80px; border:1px solid currentColor; border-radius:50%; opacity:.16; }
.dark-card { color: #fff; background: var(--navy); }
.light-card { color: var(--blue); background: #fff; border: 1px solid rgba(7,59,130,.12); }
.story-card p { margin: 0 0 5px; color: var(--gold); font-size: 12px; letter-spacing: .12em; }
.story-card h3 { margin: 0 0 18px; font-family: var(--serif); font-size: clamp(24px, 2.5vw, 34px); white-space: nowrap; }
.story-card > span:last-child { font-size: 13px; opacity: .7; }
.story-connector { display: flex; flex-direction: column; align-items: center; color: #8b6b2d; font-family: var(--serif); font-size: 13px; }
.story-connector i { display: block; width: 100%; height: 1px; margin-top: 18px; background: var(--gold); }
.benefit-note { display: flex; align-items: center; justify-content: center; gap: 32px; max-width: 950px; margin: 60px auto 0; padding: 36px 42px; border: 1px solid rgba(215,168,75,.85); border-left: 6px solid var(--gold); background: linear-gradient(135deg, #fffaf0, #f1dfb8); box-shadow: 0 18px 45px rgba(80,56,15,.14); }
.benefit-note p { margin: 0; color: var(--ink); text-align: left; font-family: var(--serif); line-height: 1.8; }
.benefit-note p strong { color: #8b6119; font-size: 1.08em; }
.benefit-icon { display: grid; flex: 0 0 70px; aspect-ratio: 1; place-items: center; color: var(--gold-light); border: 1px solid var(--gold); background: var(--navy); border-radius: 50%; box-shadow: 0 8px 22px rgba(3,20,38,.2); font-size: 11px; }

.anniversary { position: relative; overflow: hidden; margin-top: -48px; padding: 80px 0 160px; background: radial-gradient(circle at 82% 0%, rgba(215,168,75,.08), transparent 28%), linear-gradient(180deg, #020b14 0%, #031426 34%, #071f36 100%); }
.anniversary::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 72px;
  background: linear-gradient(180deg, #020b14, rgba(2,11,20,0));
  pointer-events: none;
}
.content-layer { position: relative; z-index: 3; }
.section-image-placeholder { display: grid; place-items: center; color: rgba(255,255,255,.25); border: 1px solid rgba(255,255,255,.12); font-size: 10px; letter-spacing: .26em; }
.anniversary-intro { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 440px); gap: clamp(30px, 4vw, 48px); align-items: end; }
.anniversary-copy { min-width: 0; }
.anniversary .section-title { font-size: clamp(40px, 5.5vw, 72px); }
.anniversary-image {
  align-self: end;
  width: 100%;
  aspect-ratio: 440 / 700;
  border: 1px solid rgba(215,168,75,.3);
  background:
    linear-gradient(90deg, rgba(2,11,20,.48), transparent 28%),
    url("img/anniversary-celebration.jpg?v=20260618-0942") center bottom / cover no-repeat;
  box-shadow: 0 28px 70px rgba(0,0,0,.38);
  opacity: .88;
}
.anniversary .section-title span { color: var(--gold-light); }
.gold { color: var(--gold-light); }
.event-subtitle { margin: 22px 0 0; color: rgba(255,255,255,.65); font-family: var(--serif); font-size: 18px; letter-spacing: .12em; }
.schedule { width: min(780px, 100%); margin-top: 70px; border-top: 1px solid rgba(215,168,75,.35); }
.schedule-row { display: grid; grid-template-columns: 160px 1fr; gap: 20px; align-items: center; padding: 27px 0; border-bottom: 1px solid rgba(215,168,75,.25); }
.schedule-row time { padding-inline-start: 1em; color: var(--gold-light); font-family: var(--serif); font-size: 22px; }
.schedule-row div { display: flex; flex-direction: column; gap: 7px; }
.schedule-row strong { font-family: var(--serif); font-size: 17px; }
.schedule-row span { color: rgba(255,255,255,.5); font-size: 12px; }
.schedule-desktop-separator { font-style: normal; }
.schedule-mobile-break { display: none; }
.story-mobile-break { display: none; }
.bridge-mobile-break { display: none; }
.featured-row { background: linear-gradient(90deg, rgba(215,168,75,.09), transparent); }
.speaker-showcase { margin-top: 110px; }
.speaker-showcase-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; padding-bottom: 25px; border-bottom: 1px solid rgba(215,168,75,.42); }
.speaker-showcase-heading h3 { margin: 7px 0 0; font-family: var(--serif); font-size: clamp(30px, 3.4vw, 46px); font-weight: 500; letter-spacing: .06em; }
.speaker-showcase-heading > p { margin: 0 0 5px; color: rgba(255,255,255,.55); font-family: var(--serif); font-size: 17px; letter-spacing: .08em; }
.people-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; width: 100%; margin-top: 34px; }
.person-card { position: relative; display: grid; grid-template-columns: 46% 54%; min-height: 440px; overflow: hidden; border: 1px solid rgba(215,168,75,.32); background: linear-gradient(145deg, rgba(255,255,255,.075), rgba(255,255,255,.015)); box-shadow: 0 24px 65px rgba(0,0,0,.2); }
.person-card::before { content: ""; position: absolute; z-index: 3; inset: 0 0 auto; height: 3px; background: linear-gradient(90deg, var(--gold-light), var(--gold), transparent 88%); }
.person-photo-frame { position: relative; min-height: 440px; overflow: hidden; background: #071624; }
.person-photo-frame::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent 65%, rgba(3,20,38,.42)); pointer-events: none; }
.person-photo { display: block; width: 100%; height: 100%; object-fit: cover; object-position: center top; filter: saturate(.9) contrast(1.03); transition: transform .8s cubic-bezier(.2,.7,.2,1), filter .8s; }
.person-card:hover .person-photo { transform: scale(1.025); filter: saturate(1) contrast(1.05); }
.person-info { position: relative; z-index: 2; display: flex; min-width: 0; flex-direction: column; padding: 42px 30px 34px; }
.person-role { display: flex; flex-direction: column; gap: 4px; margin: 0; color: var(--gold-light); font-family: var(--serif); font-size: 17px; letter-spacing: .12em; }
.person-role span { color: rgba(255,255,255,.42); font-family: var(--sans); font-size: 14px; letter-spacing: .14em; text-transform: uppercase; }
.person-info h4 { margin: 18px 0 0; font-family: var(--serif); font-size: clamp(32px, 3vw, 42px); font-weight: 500; line-height: 1.2; letter-spacing: .06em; }
.person-info h4 small { font-size: 18px; }
.person-title { margin: 9px 0 0; color: rgba(255,255,255,.6); font-size: 15px; line-height: 1.7; }
.person-feature { margin-top: auto; padding-top: 24px; border-top: 1px solid rgba(215,168,75,.28); }
.person-feature span { display: block; margin-bottom: 8px; color: rgba(255,255,255,.48); font-size: 14px; letter-spacing: .12em; }
.person-feature strong { display: block; color: var(--gold-light); font-family: var(--serif); font-size: clamp(21px, 2vw, 27px); font-weight: 500; line-height: 1.5; letter-spacing: .05em; }
.person-feature strong.anniversary-session-title { font-size: clamp(19px, 1.8vw, 22px); letter-spacing: .025em; white-space: nowrap; }
.venue-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; margin-top: 80px; }
.venue-card { position: relative; display: flex; flex-direction: column; overflow: hidden; border-top: 1px solid var(--gold); background: rgba(255,255,255,.035); }
.venue-photo-frame { position: relative; aspect-ratio: 3 / 2; overflow: hidden; background: #071624; }
.venue-photo-frame::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(3,20,38,.42)); pointer-events: none; }
.venue-photo-frame img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .8s cubic-bezier(.2,.7,.2,1); }
.venue-card:hover .venue-photo-frame img { transform: scale(1.025); }
.venue-card-content { display: flex; flex: 1; flex-direction: column; padding: 32px 40px 36px; }
.venue-card h3 { margin: 0 0 20px; font-family: var(--serif); font-size: 27px; }
.venue-card p { margin: 8px 0; color: rgba(255,255,255,.6); font-size: 12px; line-height: 1.8; }
.venue-program { margin-top: auto; padding-top: 24px; border-top: 1px solid rgba(215,168,75,.35); }
.venue-program > div { display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 14px; align-items: baseline; padding: 7px 0; }
.venue-program time { color: var(--gold-light); font-family: var(--serif); font-size: 17px; white-space: nowrap; }
.venue-program span { color: rgba(255,255,255,.9); font-family: var(--serif); font-size: 16px; line-height: 1.65; }
.fee-panel { display: grid; grid-template-columns: 230px 1fr; gap: 45px; margin-top: 30px; padding: 55px; color: var(--ink); background: #f8f2e4; }
.fee-panel h3 { margin: 0; font-family: var(--serif); font-size: 40px; }
.fee-note { color: #736b5e; font-size: 11px; }
.fee-panel dl { margin: 0; }
.fee-panel dl div { display: grid; grid-template-columns: 1fr 1.15fr; gap: 20px; padding: 13px 0; border-bottom: 1px solid rgba(21,34,52,.12); }
.fee-panel dt, .fee-panel dd { margin: 0; font-size: 13px; line-height: 1.55; }
.fee-panel dd { font-weight: 600; }
.panel-caption { grid-column: 2; margin: 0; color: #756d5f; font-size: 11px; line-height: 1.7; }
.fee-panel .button { grid-column: 1 / -1; justify-self: center; margin-top: 5px; }
.dcode-feature { display: grid; grid-template-columns: minmax(0, .9fr) minmax(380px, 1.2fr); gap: clamp(32px, 5vw, 64px); align-items: center; margin-top: 70px; padding: 48px; border: 1px solid rgba(215,168,75,.38); background: linear-gradient(135deg, rgba(255,255,255,.07), rgba(255,255,255,.015)); box-shadow: 0 28px 70px rgba(0,0,0,.18); }
.dcode-copy .section-label { margin-bottom: 14px; }
.dcode-copy h3 { margin: 0; font-family: var(--serif); font-size: clamp(32px, 3.6vw, 48px); font-weight: 500; line-height: 1.35; letter-spacing: .05em; }
.dcode-copy h3 span { color: var(--gold-light); }
.dcode-copy > p { margin: 24px 0 0; color: rgba(255,255,255,.76); font-family: var(--serif); font-size: 17px; line-height: 2; }
.dcode-note { display: inline-block; margin-top: 7px; color: rgba(255,255,255,.62); font-size: 15px; }
.dcode-link { display: inline-block; margin-top: 24px; padding-bottom: 4px; color: var(--gold-light); border-bottom: 1px solid rgba(245,217,133,.45); font-size: 16px; line-height: 1.6; transition: color .2s, border-color .2s; }
.dcode-link:hover { color: #fff1b8; border-color: currentColor; }
.dcode-link span { margin-left: 5px; font-size: 14px; }
.dcode-image { display: block; width: 100%; height: auto; filter: drop-shadow(0 18px 28px rgba(0,0,0,.22)); }

.bridge-section { position: relative; overflow: hidden; padding: 135px 0; text-align: center; background: #f8f5ed; }
.bridge-symbol { position: absolute; top: 50%; left: 50%; color: transparent; font-family: var(--serif); font-size: 32vw; font-weight: 900; line-height: 1; transform: translate(-50%,-50%); -webkit-text-stroke: 1px rgba(215,168,75,.14); white-space: nowrap; }
.bridge-section blockquote { margin: 0; color: var(--blue); font-family: var(--serif); font-size: clamp(28px, 4vw, 54px); line-height: 1.7; letter-spacing: .08em; }

.tanka-section { position: relative; overflow: hidden; padding: 150px 0 130px; background: #fff; }
.tanka-section .section-copy { max-width: 100%; font-size: clamp(17px, 1.4vw, 20px); }
.wave-pattern { position:absolute; top:-1px; left:0; right:0; height:140px; opacity:.13; background-color:#fff; background-image: radial-gradient(circle at 50% 100%, transparent 20px, var(--blue) 21px 23px, transparent 24px); background-size: 48px 24px; }
.blue { color: var(--blue); }
.tanka-section .section-title { color: var(--blue); }
.tanka-section .section-title span, .utamatsuri-section .section-title span { color: var(--pink); }
.tanka-feature-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 28px; margin-top: 70px; }
.category-panel, .award-panel { padding: 45px; border: 1px solid rgba(7,59,130,.15); }
.category-panel { background: #f6f9fd; }
.award-panel { display: grid; grid-template-columns: minmax(0, 1fr) 150px; grid-template-rows: auto 1fr; column-gap: 22px; color: #fff; background: var(--blue); box-shadow: 0 25px 60px rgba(7,59,130,.15); }
.award-panel .panel-kicker { grid-column: 1 / -1; }
.panel-kicker { margin: 0 0 30px; color: var(--pink); font-size: 11px; font-weight: 700; letter-spacing: .2em; }
.category-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 0; padding: 0; list-style-position: inside; color: var(--blue); font-family: var(--serif); font-size: 16px; }
.award-panel h3 { margin: 0 0 25px; font-family: var(--serif); font-size: 30px; }
.award-panel ul { align-self: center; margin: 0; padding: 0; list-style: none; line-height: 2; font-family: var(--serif); }
.award-panel strong { color: var(--gold-light); font-size: 21px; }
.award-trophy { grid-column: 2; grid-row: 2; align-self: end; display: block; width: 100%; height: auto; filter: drop-shadow(0 12px 20px rgba(0,0,0,.25)); }
.judges { margin-top: 95px; }
.judge-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.judge-card { display: grid; grid-template-columns: 150px 1fr; grid-template-rows: auto auto; column-gap: 30px; align-items: end; padding: 28px; border-bottom: 2px solid var(--gold); background: #f7f5ef; }
.judge-photo { grid-row: 1 / 3; display: block; width: 150px; aspect-ratio: 756 / 856; object-fit: cover; object-position: center top; }
.judge-card h3 { margin: 0 0 8px; color: var(--blue); font-family: var(--serif); font-size: 28px; }
.judge-card p { align-self: start; margin: 0; color: #667; font-size: 12px; line-height: 1.7; }
.deadline-panel { display: grid; grid-template-columns: auto minmax(280px, 1fr) auto; gap: 48px; align-items: center; width: min(100%, 1000px); margin: 70px auto 0; padding: 44px 50px; border: 1px solid rgba(245,39,139,.38); background: radial-gradient(circle at 78% 50%, rgba(245,39,139,.08), transparent 32%), #fff8fb; box-shadow: 0 18px 50px rgba(245,39,139,.08); }
.deadline-panel > div { display: flex; flex-direction: column; justify-self: center; }
.deadline-panel > div > span { color: var(--pink); font-size: 12px; font-weight: 700; letter-spacing: .18em; }
.deadline-panel strong { color: var(--blue); font-family: var(--serif); font-size: 50px; }
.deadline-panel strong small { font-family: var(--sans); font-size: 11px; letter-spacing: .12em; }
.deadline-panel p { justify-self: center; margin: 0; font-size: 18px; line-height: 1.75; }
.deadline-panel p strong { color: var(--pink); font-family: var(--sans); font-size: 28px; }
.deadline-panel .button { min-width: 230px; min-height: 64px; font-size: 17px; }
@media (min-width: 901px) {
  .deadline-offer { white-space: nowrap; }
  .tanka-intro-line { white-space: nowrap; }
}

.utamatsuri-section { position: relative; overflow: hidden; padding: 150px 0; background: #eef5fb; }
.utamatsuri-intro { display: grid; grid-template-columns: minmax(300px, 440px) minmax(0, 1fr); gap: clamp(30px, 4vw, 48px); align-items: end; }
.utamatsuri-copy { min-width: 0; }
.utamatsuri-image { align-self: end; width: 100%; aspect-ratio: 440 / 700; border: 1px solid rgba(7,59,130,.18); background: linear-gradient(90deg, rgba(238,245,251,.16), transparent 30%), url("img/utamatsuri-visual.jpg?v=20260618-1500") center / cover no-repeat; box-shadow: 0 28px 70px rgba(7,59,130,.18); }
.utamatsuri-section .section-title { color: var(--blue); font-size: clamp(40px, 4.8vw, 64px); }
.utamatsuri-section .section-title small { font-family: var(--sans); font-size: 16px; letter-spacing: .2em; }
.event-date-card { display: flex; align-items: center; gap: 35px; margin-top: 45px; }
.event-date-card > div { display: flex; flex-direction: column; padding-right: 35px; border-right: 1px solid rgba(7,59,130,.2); }
.event-date-card span { color: var(--pink); font-size: 10px; font-weight: 700; letter-spacing: .15em; }
.event-date-card strong { color: var(--blue); font-family: var(--serif); font-size: 43px; font-weight: 600; }
.event-date-card p { color: var(--blue); font-size: 14px; line-height: 1.7; }
.event-date-card p strong { font-family: var(--serif); font-size: 23px; }
.guest-card { display: grid; grid-template-columns: 130px 1fr; gap: 25px; align-items: center; max-width: 500px; margin: 45px 0 35px; padding: 24px; background: #fff; box-shadow: 0 20px 50px rgba(7,59,130,.1); }
.guest-photo { display: block; width: 130px; aspect-ratio: 660 / 756; object-fit: cover; object-position: center top; }
.guest-card p { margin:0; color:var(--pink); font-size:11px; font-weight:700; }
.guest-card h3 { margin:5px 0 12px; color:var(--blue); font-family:var(--serif); font-size:28px; }
.guest-card span { color:#677; font-size:11px; line-height:1.7; }

.entry-section { padding: 145px 0 80px; color: #fff; text-align: center; background: var(--navy); }
.entry-intro { margin: 25px 0 55px; color: rgba(255,255,255,.6); font-size: 14px; }
.entry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; text-align: left; }
.entry-card { position: relative; min-height: 420px; padding: 38px; overflow: hidden; }
.entry-card > span { position:absolute; right:20px; top:10px; font-family:var(--serif); font-size:80px; opacity:.08; }
.entry-card > p { margin:60px 0 8px; font-size:11px; font-weight:700; letter-spacing:.12em; }
.entry-card h3 { margin:0; font-family:var(--serif); font-size:29px; }
.entry-card ul { min-height:100px; margin:32px 0; padding:0; list-style:none; font-size:12px; line-height:2.1; opacity:.75; }
.entry-card li::before { content:"—"; margin-right:10px; }
.entry-card .button { width:100%; min-width:0; }
.entry-dark { border:1px solid rgba(215,168,75,.3); background:#071d32; }
.entry-dark > p { color:var(--gold-light); }
.entry-pink { color:var(--ink); background:#fff4f9; }
.entry-pink > p { color:var(--pink); }
.entry-blue { background:#0b3971; }
.entry-blue > p { color:#a8d1ff; }
.entry-blue .button-blue { border-color: rgba(168,209,255,.6); background: linear-gradient(135deg, #438fdc, #236bbb); box-shadow: 0 12px 30px rgba(67,143,220,.3); }
.organizer { margin:70px 0 0; color:rgba(255,255,255,.35); font-size:10px; }
.organizer-mobile-break { display: none; }
footer { display:flex; align-items:center; justify-content:center; padding:30px 5vw; color:rgba(255,255,255,.45); text-align:center; background:#020b14; font-size:9px; }

/* Readability baseline for the site's primarily senior audience. */
.brand, .brand-mark, .desktop-nav { font-size: 16px; }
.eyebrow, .section-label { font-size: 14px; }
.hero-lead { font-size: clamp(18px, 1.5vw, 22px); }
.hero-date span { font-size: 15px; }
.button { min-height: 58px; font-size: 16px; }
.section-copy { font-size: clamp(18px, 1.5vw, 21px); }
.story-card p { font-size: 15px; }
.story-card > span:last-child, .story-connector { font-size: 16px; line-height: 1.8; }
.benefit-note p { font-size: 20px; }
.benefit-icon { font-size: 16px; }
.event-subtitle { font-size: 21px; }
.schedule-row time { font-size: 25px; }
.schedule-row strong { font-size: 20px; }
.schedule-row span { font-size: 15px; }
.person-title { font-size: 16px; }
.venue-card h3 { font-size: 31px; }
.venue-card p { font-size: 16px; }
.fee-note, .panel-caption, .panel-kicker { font-size: 14px; }
.fee-panel dt, .fee-panel dd { font-size: 16px; }
.category-list { font-size: 19px; }
.award-panel h3 { font-size: 34px; }
.award-panel ul { font-size: 17px; }
.award-panel strong { font-size: 24px; }
.judge-card h3 { font-size: 31px; }
.judge-card p { font-size: 16px; }
.deadline-panel > div > span { font-size: 16px; }
.deadline-panel strong small { font-size: 15px; }
.event-date-card span { font-size: 14px; }
.event-date-card p { font-size: 17px; }
.guest-card p { font-size: 14px; }
.guest-card h3 { font-size: 31px; }
.guest-card span { font-size: 16px; }
.entry-intro { font-size: 17px; }
.entry-card > p { font-size: 14px; }
.entry-card h3 { font-size: 32px; }
.entry-card ul { font-size: 16px; line-height: 2; }
.organizer { font-size: 14px; }
footer { font-size: 13px; }

.back-to-top {
  position: fixed;
  z-index: 110;
  right: 25px;
  bottom: 25px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 58px;
  height: 58px;
  padding: 0;
  color: var(--gold-light);
  border: 1px solid rgba(215, 168, 75, .55);
  border-radius: 50%;
  background: rgba(3, 20, 38, .9);
  box-shadow: 0 12px 35px rgba(0, 0, 0, .2);
  backdrop-filter: blur(10px);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(18px);
  transition: opacity .25s, visibility .25s, transform .25s, background .25s;
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: #0a2744; transform: translateY(-3px); }
.back-to-top span { width: 10px; height: 10px; border-top: 1px solid currentColor; border-left: 1px solid currentColor; transform: rotate(45deg) translate(2px, 2px); }
.back-to-top small { font-size: 8px; letter-spacing: .15em; }

.reveal { opacity: 0; transform: translateY(35px); transition: opacity .8s ease, transform .8s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1050px) {
  .deadline-panel { grid-template-columns: 1fr 1fr; gap: 28px; padding: 40px; }
  .deadline-panel .button { grid-column: 1 / 3; justify-self: center; }
}

@media (max-width: 900px) {
  .desktop-nav { display: none; }
  .menu-button { display: flex; flex-direction: column; justify-content: center; gap: 7px; width: 44px; height: 44px; padding: 10px; border: 0; color: #fff; background: transparent; cursor: pointer; }
  .menu-button span:not(.sr-only) { display: block; width: 24px; height: 1px; background: currentColor; transition: transform .25s; }
  .menu-button[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-button[aria-expanded="true"] span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }
  .mobile-nav { position: fixed; inset: 0; z-index: -1; display: flex; flex-direction: column; justify-content: center; gap: 30px; padding: 15vw; color: #fff; background: rgba(3,20,38,.98); font-family: var(--serif); font-size: 24px; opacity: 0; visibility: hidden; transition: opacity .3s, visibility .3s; }
  .mobile-nav.is-open { opacity: 1; visibility: visible; }
  .story-cards { grid-template-columns: 1fr; }
  .story-connector { padding: 5px 0; }
  .story-connector i { width: 1px; height: 45px; }
  .anniversary-intro { grid-template-columns: 1fr; gap: 44px; }
  .anniversary-image { justify-self: center; width: min(100%, 440px); opacity: .82; }
  .people-grid { grid-template-columns: 1fr; }
  .fee-panel { grid-template-columns: 1fr; }
  .panel-caption, .fee-panel .button { grid-column: 1; }
  .dcode-feature { grid-template-columns: 1fr; }
  .tanka-feature-grid { grid-template-columns: 1fr; }
  .deadline-panel { grid-template-columns: 1fr 1fr; }
  .deadline-panel .button { grid-column: 1 / 3; }
  .utamatsuri-intro { grid-template-columns: 1fr; gap: 44px; }
  .utamatsuri-image { justify-self: center; width: min(100%, 440px); }
  .entry-grid { grid-template-columns: 1fr; }
  .entry-card { min-height: 0; }
  .entry-card ul { min-height: 0; }
}

@media (max-width: 600px) {
  .site-header { height: 66px; padding: 0 20px; }
  .brand {
    font-size: 12px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity .3s ease, visibility .3s ease, transform .3s ease;
  }
  .site-header.scrolled .brand {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }
  .brand-mark { width: 33px; }
  .hero {
    min-height: 0;
    aspect-ratio: 16 / 9;
  }
  .hero-bg {
    inset: 0;
    background-size: contain;
    background-position: center top;
  }
  .hero-starfield { opacity: .46; }
  .hero-foil-sweep::before { top: 10%; height: 72%; animation-duration: 10s; }
  .hero h1 { font-size: clamp(43px, 13vw, 62px); line-height: 1.25; }
  .hero-kicker { font-size: 14px; line-height: 1.8; letter-spacing: .22em; }
  .hero-lead { font-size: 18px; line-height: 1.9; }
  .desktop-only { display: none; }
  .button { width: 100%; max-width: 360px; }
  .section-inner { width: min(88vw, 520px); }
  .section-title { font-size: clamp(36px, 11vw, 52px); }
  .utamatsuri-section .section-title { font-size: clamp(28px, 9vw, 38px); letter-spacing: .04em; white-space: nowrap; }
  .section-copy { font-size: 18px; line-height: 2; }
  .organizer { line-height: 1.9; }
  .organizer-desktop-separator { display: none; }
  .organizer-mobile-break { display: initial; }
  .story-section, .anniversary, .tanka-section, .utamatsuri-section, .entry-section { padding: 105px 0 90px; }
  .anniversary { margin-top: -24px; padding-top: 48px; }
  .story-card { min-height: 230px; padding: 28px 24px; }
  .benefit-note { align-items: flex-start; gap: 18px; padding: 28px 22px; }
  .benefit-icon { flex-basis: 60px; }
  .benefit-note p { font-size: 18px; }
  .schedule { margin-top: 50px; }
  .schedule-row { grid-template-columns: 1fr; gap: 8px; padding: 22px 0; }
  .schedule-row time { font-size: 23px; }
  .schedule-row > div { padding-inline-start: 1em; }
  .schedule-desktop-separator { display: none; }
  .schedule-mobile-break { display: initial; }
  .story-mobile-break { display: initial; }
  .bridge-mobile-break { display: initial; }
  .anniversary-image { width: 100%; aspect-ratio: 3 / 4; }
  .speaker-showcase { margin-top: 75px; }
  .speaker-showcase-heading { display: block; padding-bottom: 20px; }
  .speaker-showcase-heading > p { margin-top: 15px; font-size: 16px; line-height: 1.8; }
  .people-grid { margin-top: 24px; }
  .person-card { grid-template-columns: 1fr; min-height: 0; }
  .person-photo-frame { min-height: 0; aspect-ratio: 4 / 3; }
  .person-photo { object-position: center 22%; }
  .person-photo-frame::after { background: linear-gradient(180deg, transparent 65%, rgba(3,20,38,.42)); }
  .person-info { min-height: 330px; padding: 28px 24px 30px; }
  .person-info h4 { font-size: 34px; }
  .person-feature strong { font-size: 24px; }
  .venue-grid { grid-template-columns: 1fr; margin-top: 55px; }
  .venue-card-content { padding: 28px 24px 32px; }
  .venue-program > div { grid-template-columns: 1fr; gap: 2px; padding: 9px 0; }
  .fee-panel { gap: 25px; padding: 30px 22px; }
  .fee-panel dl div { grid-template-columns: 1fr; gap: 4px; padding: 15px 0; }
  .fee-panel dd { color: #8b641c; }
  .dcode-feature { margin-top: 50px; padding: 28px 22px; }
  .dcode-copy > p { font-size: 16px; }
  .bridge-section { padding: 100px 0; }
  .bridge-section blockquote { font-size: 26px; }
  .category-panel, .award-panel { padding: 30px 23px; }
  .award-panel { grid-template-columns: minmax(0, 1fr) 110px; column-gap: 16px; }
  .category-list { grid-template-columns: repeat(2, 1fr); font-size: 17px; }
  .judges { margin-top: 70px; }
  .judge-grid { grid-template-columns: 1fr; }
  .judge-card { grid-template-columns: 105px 1fr; column-gap: 20px; padding: 18px; }
  .judge-photo { width: 105px; }
  .judge-card h3 { font-size: 27px; }
  .deadline-panel { grid-template-columns: 1fr; gap: 20px; padding: 30px 24px; }
  .deadline-panel .button { grid-column: 1; }
  .deadline-panel strong { font-size: 33px; }
  .utamatsuri-image { width: 100%; aspect-ratio: 3 / 4; }
  .event-date-card { gap: 20px; }
  .event-date-card > div { padding-right: 20px; }
  .event-date-card strong { font-size: 37px; }
  .guest-card { grid-template-columns: 95px 1fr; gap: 18px; padding: 17px; }
  .guest-photo { width: 95px; }
  .guest-card h3 { font-size: 27px; }
  .entry-card { padding: 32px 28px; }
  footer { flex-direction: column; gap: 20px; text-align: center; }
  .back-to-top { right: 16px; bottom: 16px; width: 52px; height: 52px; }
}

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