:root{
  color-scheme: dark;
  --night:#161A44;       /* 新年の夜空（藍） */
  --night-deep:#0E1132;
  --night-soft:#232860;
  --gold:#E6BE62;        /* 金・花火の芯 */
  --gold-soft:#F3DDA0;
  --beni:#D23C55;        /* 紅・CTA */
  --beni-dark:#A92740;
  --snow:#F5F2FA;        /* 本文 */
  --mist:#B9BCDA;        /* 補足 */
  --line:rgba(230,190,98,.28);
  --mincho:"Zen Old Mincho","Hiragino Mincho ProN","Yu Mincho",serif;
  --gothic:"Zen Kaku Gothic New","Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){ color-scheme:dark; } }
:root[data-theme="dark"]{ color-scheme:dark; }
*,*::before,*::after{box-sizing:inherit;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:env(safe-area-inset-top,0px)}
body{
  background:var(--night);
  color:var(--snow);
  font-family:var(--gothic);
  font-size:1rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  padding-bottom:84px; /* 固定CTA分 */
}
img{max-width:100%;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:4px}
.wrap{width:min(100% - 40px, 1040px);margin-inline:auto}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* 画像差し替え用プレースホルダー */
.ph{
  background:
    repeating-linear-gradient(135deg, rgba(255,255,255,.04) 0 12px, transparent 12px 24px),
    var(--night-soft);
  border:1px dashed rgba(243,221,160,.45);
  color:var(--gold-soft);
  font-size:.8rem;
  display:grid;place-items:center;text-align:center;
  padding:12px;border-radius:6px;
}

/* ---------- HERO ---------- */
.hero{
  position:relative;
  min-height:min(92svh, 820px);
  display:grid;
  align-items:end;
  overflow:hidden;
  background:radial-gradient(120% 80% at 50% 0%, #2A2F72 0%, var(--night) 55%, var(--night-deep) 100%);
}
.hero canvas{position:absolute;inset:0;width:100%;height:100%}
.hero-inner{position:relative;z-index:2;padding:0 0 56px;text-align:center}
.hero-anniv{
  display:inline-block;
  font-family:var(--mincho);font-weight:700;
  color:var(--gold);
  font-size:.95rem;letter-spacing:.2em;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:4px 18px;margin-bottom:18px;
}
.hero h1{
  font-family:var(--mincho);font-weight:900;
  line-height:1.15;
  letter-spacing:.02em;
}
.hero h1 .venue{display:block;font-size:clamp(1rem,3.6vw,1.35rem);font-weight:700;letter-spacing:.14em;color:var(--gold-soft);margin-bottom:10px}
.hero h1 .name{display:block;font-size:clamp(2.6rem,11vw,6.2rem);text-shadow:0 0 40px rgba(230,190,98,.35)}
.hero-date{
  margin-top:22px;
  font-family:var(--mincho);font-weight:700;
  font-size:clamp(1.25rem,5vw,1.9rem);
}
.hero-date small{font-size:.6em;margin-left:.15em}
.hero-lead{margin-top:10px;color:var(--mist);font-size:.95rem}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  min-height:56px;padding:0 32px;
  background:var(--beni);color:#fff;
  font-weight:700;font-size:1.05rem;text-decoration:none;
  border-radius:999px;
  box-shadow:0 6px 0 var(--beni-dark);
  transition:transform .12s, box-shadow .12s;
}
.btn:hover{transform:translateY(2px);box-shadow:0 4px 0 var(--beni-dark)}
.btn:active{transform:translateY(6px);box-shadow:0 0 0 var(--beni-dark)}
.hero .btn{margin-top:28px}

/* ---------- 共通見出し ---------- */
section{padding:88px 0}
.h2{
  font-family:var(--mincho);font-weight:900;
  font-size:clamp(1.6rem,5.4vw,2.4rem);
  line-height:1.4;text-align:center;
  margin-bottom:16px;
}
.h2-sub{text-align:center;color:var(--mist);max-width:36em;margin:0 auto 48px}

/* ---------- INTRO ---------- */
.intro{padding-top:72px;text-align:center}
.intro p{font-family:var(--mincho);font-size:clamp(1.05rem,3.6vw,1.3rem);line-height:2.2;max-width:30em;margin-inline:auto}

/* ---------- 2画面 ---------- */
.twoscreen{background:var(--night-deep)}
.screens{display:grid;gap:24px;grid-template-columns:1fr 1fr;max-width:964px;margin-inline:auto}
.screen figure{margin:0}
.screen .ph{aspect-ratio:940/627}
.screen-img{width:100%;height:auto;max-width:470px;margin-inline:auto;border-radius:6px}
.screen figcaption{margin-top:12px;font-weight:700;text-align:center}
.screen figcaption span{display:block;font-weight:400;font-size:.88rem;color:var(--mist)}
.twoscreen-note{max-width:40em;margin:40px auto 0;text-align:center;color:var(--mist);font-size:.95rem}

/* ---------- 見どころ ---------- */
.points{display:grid;gap:56px;max-width:920px;margin-inline:auto}
.point{display:grid;gap:28px;grid-template-columns:1fr 1.1fr;align-items:center}
.point:nth-child(even) .point-img{order:2}
.point-img .ph{aspect-ratio:3/2}
.gallery{display:grid;gap:8px;max-width:470px}.gallery img{width:100%;height:auto;border-radius:6px}.g-sub{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.point-photo{width:100%;height:auto;max-width:490px;border-radius:6px}
.point-text{grid-template-columns:1fr;text-align:center;border:1px solid var(--line);border-radius:14px;padding:36px 24px;background:rgba(255,255,255,.03)}
.point-text p{max-width:34em;margin-inline:auto}
.facilities{list-style:none;display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-top:22px}
.facilities li{border:1px solid var(--gold);color:var(--gold-soft);border-radius:8px;padding:6px 16px;font-weight:700;font-size:.92rem}
.point h3{font-family:var(--mincho);font-weight:700;font-size:clamp(1.25rem,4vw,1.6rem);line-height:1.5;margin-bottom:12px;color:var(--gold-soft)}
.point p{color:var(--snow)}
.point .award{margin-top:14px;font-size:.88rem;color:var(--mist);border-left:2px solid var(--gold);padding-left:12px}

/* ---------- 席選び ---------- */
.seats{background:linear-gradient(180deg,var(--night) 0%, var(--night-deep) 100%)}
.seat-map{max-width:680px;margin:0 auto 48px}.seat-map-title{font-family:var(--mincho);font-weight:700;font-size:1.25rem;text-align:center;margin-bottom:14px;color:var(--gold-soft)}.seat-map img{width:100%;height:auto;border-radius:10px}.seat-map figcaption{margin-top:10px;font-size:.85rem;color:var(--mist)}
.seat-caution{max-width:680px;margin:-24px auto 40px;border:2px solid var(--beni);border-radius:10px;padding:16px 20px 18px;background:rgba(210,60,85,.12)}
.seat-caution p{font-size:.88rem;line-height:1.8;color:var(--snow)}
.seat-list{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(290px,1fr))}
.seat{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:14px;
  padding:18px;display:flex;flex-direction:column;
}
.seat.featured{border-color:var(--gold);background:rgba(230,190,98,.08)}
.seat .ph{aspect-ratio:16/9;margin-bottom:14px}
.seat-img{width:100%;height:auto;border-radius:6px;margin-bottom:14px}
.seat-tag{align-self:flex-start;font-size:.78rem;font-weight:700;color:var(--night-deep);background:var(--gold);border-radius:4px;padding:1px 8px;margin-bottom:8px}
.seat h3{font-size:1.15rem;font-weight:700;line-height:1.5}
.seat-for{font-size:.88rem;color:var(--gold-soft);margin:2px 0 8px}
.seat p.desc{font-size:.92rem;color:var(--mist);flex:1}
.seat-price{margin:14px 0 14px;font-family:var(--mincho);font-weight:700;font-size:1.35rem}
.seat-price small{font-family:var(--gothic);font-weight:400;font-size:.75rem;color:var(--mist);margin-right:.4em}
.btn-sm{min-height:48px;font-size:.95rem;padding:0 20px;width:100%}
.area-links{display:grid;gap:14px}
.area{display:grid;grid-template-columns:5.5em 1fr;align-items:center;gap:6px 12px}
.area-name{font-weight:700;font-size:.92rem}
.area .btn-sm{padding:0 10px}
.area-day{grid-column:2;text-align:center;font-size:.85rem;color:var(--gold-soft)}
.block-links{display:grid;grid-template-columns:1fr 1fr;gap:12px 10px}
.block-links .btn-sm{padding:0 10px}
.area-day.solo{display:block;margin-top:10px}
.day-note{display:block;font-size:.75rem;color:var(--mist)}
.addon .addon-note{margin:14px 0 0;font-size:.82rem}
.attr-pass{margin-top:16px;font-size:.92rem;color:var(--snow)}
.attr-pass a{display:inline-block;margin-left:.5em;color:var(--gold-soft)}
.area-note{margin-top:12px;font-size:.78rem;color:var(--mist)}
.seat-note{margin-top:20px;font-size:.82rem;color:var(--mist)}

/* ---------- 過ごし方（時間の流れ） ---------- */
.day-flow{display:grid;gap:0;max-width:760px;margin-inline:auto;position:relative}
.day-flow::before{content:"";position:absolute;left:21px;top:8px;bottom:8px;width:2px;background:linear-gradient(var(--gold-soft),var(--beni))}
.flow{display:grid;grid-template-columns:44px 1fr;gap:18px;padding:0 0 40px}
.flow:last-child{padding-bottom:0}
.flow-dot{width:44px;height:44px;border-radius:50%;background:var(--night-deep);border:2px solid var(--gold);display:grid;place-items:center;font-family:var(--mincho);font-weight:700;font-size:.85rem;color:var(--gold);position:relative}
.flow h3{font-size:1.15rem;font-weight:700;margin-bottom:6px}
.flow p{color:var(--mist);font-size:.95rem}
.flow .chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.flow-imgs{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px;align-items:start}.flow-imgs.one{grid-template-columns:1fr}.flow-imgs.attractions{grid-template-columns:1fr 1fr;gap:24px 16px}.attractions .flow-fig:first-child{grid-column:1/-1}@media (max-width:767px){.flow-imgs.attractions{grid-template-columns:1fr}}.flow-fig{margin:0;width:100%}.flow-fig img{width:100%;height:auto;border-radius:6px}.flow-fig figcaption{margin-top:6px;font-size:.82rem;color:var(--snow)}@media (max-width:767px){.flow-imgs{grid-template-columns:1fr}}
.flow-fig figcaption strong{display:block;font-weight:700}.attr-desc{display:block;color:var(--mist);font-size:.8rem;margin-top:2px}
.chip{font-size:.85rem;border:1px solid var(--line);border-radius:999px;padding:4px 14px;color:var(--snow);text-decoration:none}
a.chip:hover{border-color:var(--gold)}

/* ---------- 30th ---------- */
.anniv{text-align:center;background:var(--night-deep)}
.anniv .theme{font-family:var(--mincho);font-weight:900;font-size:clamp(1.8rem,7vw,3rem);color:var(--gold);letter-spacing:.04em;margin:8px 0 20px}
.anniv-fig{max-width:442px;margin:0 auto 28px}.anniv-img{width:100%;height:auto;border-radius:6px}.anniv-fig figcaption{margin-top:8px;font-size:.78rem;color:var(--mist);text-align:right}
.anniv p{max-width:34em;margin-inline:auto;color:var(--mist)}

/* ---------- あわせて購入 ---------- */
.addon-list{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));max-width:860px;margin-inline:auto}
.addon{border:1px solid var(--line);border-radius:14px;padding:22px}
.addon h3{font-size:1.1rem;font-weight:700}
.addon p{font-size:.92rem;color:var(--mist);margin:6px 0 12px}
.addon dl{display:grid;grid-template-columns:auto 1fr;gap:4px 16px;font-size:.95rem;margin-bottom:16px}
.addon dt{color:var(--mist)}
.addon dd{font-weight:700;text-align:right}
.btn-ghost{background:transparent;border:2px solid var(--beni);box-shadow:none;color:var(--snow)}
.btn-ghost:hover{background:rgba(210,60,85,.15);transform:none;box-shadow:none}
.addon-btn2{margin-top:10px}

/* ---------- 開催概要 ---------- */
.outline-table{width:100%;max-width:760px;margin-inline:auto;border-collapse:collapse}
.outline-table th,.outline-table td{padding:16px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:.95rem}
.outline-table th{width:8em;color:var(--gold-soft);font-weight:700;white-space:nowrap}
.caution{max-width:760px;margin:36px auto 0;font-size:.85rem;color:var(--mist)}
.caution li{list-style:none;padding-left:1em;text-indent:-1em}
.caution li::before{content:"※"}
.todo{color:var(--beni);font-weight:700}

/* ---------- footer ---------- */
footer{padding:40px 0 32px;text-align:center;font-size:.78rem;color:var(--mist);border-top:1px solid var(--line)}

/* ---------- 固定CTA ---------- */
.fixed-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:20;
  padding:12px 16px calc(12px + env(safe-area-inset-bottom,0px));
  background:rgba(14,17,50,.92);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;gap:16px;
  transform:translateY(110%);transition:transform .3s;
}
.fixed-cta.show{transform:none}
.fixed-cta p{font-size:.85rem;color:var(--mist);display:none}
.fixed-cta .btn{min-height:50px;width:min(100%,420px)}
@media (min-width:768px){.fixed-cta p{display:block}}

/* ---------- SP ---------- */
@media (max-width:767px){
  section{padding:64px 0}
  .screens{grid-template-columns:1fr}
  .point{grid-template-columns:1fr;gap:16px}
  .point:nth-child(even) .point-img{order:0}
  .outline-table th{width:6em}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn,.fixed-cta{transition:none}
}