@charset "UTF-8";
/* common.css — 全ページ共通（変数・ベース・ヘッダー・ナビ・ボタン・見出し・フッター・スクロール表示）
   並び：ベース → 768px以下 → 480px以下 */

:root {
  --c-bg: #0b0b0d;
  --c-bg-2: #131316;
  --c-bg-3: #1c1c20;
  --c-text: #f3f1ec;
  --c-muted: #a6a4ab;
  --c-line: rgba(255, 255, 255, .14);
  --c-accent: #ff3b2f;        /* ★アクセントカラー（シグナルレッド） */
  --c-accent-ink: #0b0b0d;    /* アクセント色の上に乗せる文字色 */

  --font-display: "Anton", "Impact", "Arial Narrow", sans-serif;   /* 英数字 */
  --font-sans: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", "Meiryo", sans-serif;

  --header-h: 84px;
  --container: 1240px;
  --gutter: clamp(20px, 4vw, 56px);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
}

/* ---------- ベース ---------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.9;
  letter-spacing: .04em;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}
body.is-nav-open, html:has(dialog[open]) { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3, h4, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 3px; }
::selection { background: var(--c-accent); color: var(--c-accent-ink); }
[hidden] { display: none !important; }

/* 英字（Anton）と和文が混ざる箇所：Antonは太字を合成せず、和文だけ太字にする */
[lang="en"] { font-synthesis: none; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: absolute; top: -100px; left: 12px; z-index: 300;
  padding: 10px 18px;
  background: var(--c-accent); color: var(--c-accent-ink);
  font-weight: 700; text-decoration: none;
}
.skip-link:focus { top: 12px; }

.container { width: min(100% - var(--gutter) * 2, var(--container)); margin-inline: auto; }
.section { position: relative; padding-block: clamp(100px, 12vw, 180px); }
.main--offset { padding-top: var(--header-h); }
main:focus { outline: none; }

.note, .note-list { margin-top: 24px; color: var(--c-muted); font-size: 13px; }
.note-list li + li { margin-top: 2px; }

/* ---------- ボタン ---------- */
.btn {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .9em;
  min-height: 56px;
  padding: 0 34px;
  border: 1px solid var(--c-accent);
  background: var(--c-accent);
  color: var(--c-accent-ink);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  font-synthesis: none;
  letter-spacing: .1em;
  line-height: 1.2;
  text-decoration: none;
  text-transform: uppercase;
  transition: color .35s, border-color .35s;
}
.btn::before {
  content: "";
  position: absolute; inset: 0; z-index: -1;
  background: var(--c-text);
  transform: translateX(-101%);
  transition: transform .5s var(--ease-out);
}
.btn::after {
  content: "";
  width: 18px; height: 1px;
  background: currentColor;
  transition: transform .35s var(--ease-out);
}
.btn:hover::before { transform: none; }
.btn:hover { border-color: var(--c-text); }
.btn:hover::after { transform: translateX(4px); }
.btn--ghost { background: transparent; color: var(--c-text); border-color: rgba(255, 255, 255, .45); }
.btn--ghost:hover { color: var(--c-accent-ink); }
.btn--sm { min-height: 44px; padding: 0 22px; font-size: 16px; font-weight: 400; letter-spacing: .14em; }
.btn--sm::after { display: none; }
.btn--lg { min-height: 68px; padding: 0 48px; font-size: 16px; }

/* ---------- セクション見出し ---------- */
.sec-head { margin-bottom: clamp(40px, 6vw, 72px); }
.sec-head__num {
  display: flex; align-items: center; gap: 14px;
  color: var(--c-accent);
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: .2em;
  line-height: 1;
}
.sec-head__num::after { content: ""; width: 48px; height: 1px; background: currentColor; }
.sec-head__title {
  margin-top: 16px;
  font-family: var(--font-display);
  font-size: clamp(64px, 10vw, 150px);
  font-weight: 400;
  line-height: .9;
  letter-spacing: .01em;
  text-transform: uppercase;
}
.sec-head__ja { margin-top: 14px; color: var(--c-muted); font-size: 14px; font-weight: 700; letter-spacing: .2em; }
/* 横並び版（番号・タイトル・日本語を1行に） */
.sec-head--row { display: flex; flex-wrap: wrap; align-items: flex-end; column-gap: 28px; }
.sec-head--row .sec-head__num { flex-basis: 100%; }
.sec-head--row .sec-head__ja { margin-bottom: .6em; }

/* ---------- ヘッダー ---------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 100;
  height: var(--header-h);
}
/* 背景は疑似要素に持たせる（header本体に backdrop-filter を付けると、モバイルナビの position:fixed が header 内に閉じ込められるため） */
.site-header::before {
  content: "";
  position: absolute; inset: 0;
  background: rgba(11, 11, 13, .8);
  border-bottom: 1px solid var(--c-line);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  opacity: 0;
  transition: opacity .4s;
}
.site-header.is-scrolled::before, .site-header.is-solid::before { opacity: 1; }
.site-header__inner {
  position: relative;
  display: flex; align-items: center; gap: 36px;
  height: 100%;
  padding-inline: var(--gutter);
}
.logo {
  position: relative; z-index: 2;
  flex-shrink: 0;
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: .06em;
  line-height: 1;
  text-decoration: none;
}
.logo img { width: auto; height: 56px; }

.nav { margin-left: auto; }
.nav ul { display: flex; gap: clamp(18px, 2.2vw, 34px); }
.nav a {
  position: relative;
  display: block;
  padding-block: 6px;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: .14em;
  line-height: 1;
  text-decoration: none;
}
.nav a::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0;
  height: 2px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .4s var(--ease-out);
}
.nav a:hover::after { transform: scaleX(1); transform-origin: left; }
.nav__ja { display: none; }
.header-cta { position: relative; z-index: 2; flex-shrink: 0; }

.nav-toggle { display: none; }

/* ---------- フッター ---------- */
.site-footer {
  overflow: hidden;
  padding-top: clamp(80px, 9vw, 120px);
  background: #060607;
  border-top: 1px solid var(--c-line);
}
.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  width: min(100% - var(--gutter) * 2, var(--container));
  margin-inline: auto;
}
.site-footer__name { font-family: var(--font-display); font-size: 34px; letter-spacing: .04em; line-height: 1.1; }
.site-footer address { margin-top: 20px; color: var(--c-muted); font-size: 14px; font-style: normal; line-height: 2; }
.site-footer address a { color: var(--c-text); }
.site-footer__nav { display: grid; grid-template-columns: repeat(2, auto); gap: 10px 56px; }
.site-footer__nav a {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: .12em;
  text-decoration: none;
  transition: color .3s;
}
.site-footer__nav a:hover { color: var(--c-accent); }
.site-footer__big {
  margin-top: clamp(56px, 7vw, 96px);
  color: transparent;
  font-family: var(--font-display);
  font-size: 13vw;
  line-height: .78;
  letter-spacing: .01em;
  text-align: center;
  white-space: nowrap;
  -webkit-text-stroke: 1px rgba(255, 255, 255, .2);
  user-select: none;
}
.site-footer__copy {
  padding: 22px var(--gutter);
  border-top: 1px solid var(--c-line);
  color: var(--c-muted);
  font-family: var(--font-display);
  letter-spacing: .14em;
  text-align: center;
}
.site-footer__copy small { font-size: 12px; }

/* スマホ用の固定チケットボタン（PCでは非表示） */
.sticky-cta { display: none; }

/* ---------- スクロールで表示 ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity .9s var(--ease-out), transform 1.1s var(--ease-out);
  transition-delay: var(--reveal-delay, 0s);
}
.js .reveal.is-in { opacity: 1; transform: none; }

/* =========================================================
   768px以下
   ========================================================= */
@media (max-width: 768px) {
  :root { --header-h: 68px; }

  .site-header__inner { gap: 12px; }
  .logo img { height: 44px; }
  .header-cta { display: none; }   /* スマホは画面下の固定ボタン（.sticky-cta）を使う */
  .nav-toggle { margin-left: auto; }

  .nav-toggle {
    position: relative; z-index: 2;
    display: grid; place-items: center;
    width: 48px; height: 48px;
    margin-right: -8px;
    padding: 0;
    border: 0;
    background: none;
    cursor: pointer;
  }
  .nav-toggle__bar, .nav-toggle__bar::before, .nav-toggle__bar::after {
    display: block;
    width: 26px; height: 2px;
    background: var(--c-text);
    transition: transform .35s var(--ease-out), background-color .2s;
  }
  .nav-toggle__bar { position: relative; }
  .nav-toggle__bar::before, .nav-toggle__bar::after { content: ""; position: absolute; left: 0; }
  .nav-toggle__bar::before { transform: translateY(-8px); }
  .nav-toggle__bar::after { transform: translateY(8px); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar { background: transparent; }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar::before { transform: rotate(45deg); }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar::after { transform: rotate(-45deg); }

  /* 全画面ナビ */
  .nav {
    position: fixed; inset: 0; z-index: 1;
    display: flex; align-items: center;
    margin: 0;
    padding: calc(var(--header-h) + 24px) var(--gutter) 40px;
    overflow-y: auto;
    background: var(--c-bg);
    visibility: hidden;
    opacity: 0;
    transition: opacity .4s, visibility 0s .4s;
  }
  .nav.is-open { visibility: visible; opacity: 1; transition: opacity .4s; }
  .nav ul { flex-direction: column; gap: 4px; width: 100%; counter-reset: nav; }
  .nav li {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .5s var(--ease-out), transform .6s var(--ease-out);
  }
  .nav.is-open li { opacity: 1; transform: none; }
  .nav.is-open li:nth-child(2) { transition-delay: .04s; }
  .nav.is-open li:nth-child(3) { transition-delay: .08s; }
  .nav.is-open li:nth-child(4) { transition-delay: .12s; }
  .nav.is-open li:nth-child(5) { transition-delay: .16s; }
  .nav.is-open li:nth-child(6) { transition-delay: .2s; }
  .nav.is-open li:nth-child(7) { transition-delay: .24s; }
  .nav.is-open li:nth-child(8) { transition-delay: .28s; }
  .nav a {
    display: flex; align-items: baseline; gap: 14px;
    padding-block: 8px;
    font-size: clamp(38px, 11vw, 52px);
    letter-spacing: .04em;
    counter-increment: nav;
  }
  .nav a::before {
    content: counter(nav, decimal-leading-zero);
    color: var(--c-accent);
    font-size: 13px;
    letter-spacing: .14em;
  }
  .nav a::after { display: none; }
  .nav__ja {
    display: inline;
    margin-left: auto;
    color: var(--c-muted);
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .1em;
  }

  .sec-head--row { column-gap: 18px; }

  .site-footer { padding-bottom: 84px; }
  .site-footer__inner { grid-template-columns: 1fr; gap: 40px; }

  .sticky-cta {
    position: fixed; left: 12px; right: 12px; bottom: 12px; z-index: 90;
    display: block;
    visibility: hidden;
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .35s, transform .45s var(--ease-out), visibility 0s .45s;
  }
  .sticky-cta.is-visible { visibility: visible; opacity: 1; transform: none; transition: opacity .35s, transform .45s var(--ease-out); }
  .sticky-cta__btn { width: 100%; min-height: 58px; box-shadow: 0 10px 30px rgba(0, 0, 0, .5); }
  .sticky-cta__btn span { font-weight: 400; font-size: 18px; letter-spacing: .14em; }
  .sticky-cta__btn::after { display: none; }
}

/* =========================================================
   480px以下
   ========================================================= */
@media (max-width: 480px) {
  body { font-size: 15px; }
  .btn { padding: 0 26px; }
  .btn--lg { width: 100%; padding: 0 24px; }
  .site-footer__nav { gap: 10px 32px; }
}

/* ---------- 動きを減らす設定 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; transition-delay: 0s !important; }
  .js .reveal { opacity: 1; transform: none; }
}