/* ANTiQ 共通：ヘッダー・ナビ・フッター ── 2026-09-09
   トップページの指定を正とする。ページ固有の違いは各ページの <style> 側で上書きする。 */
/* ══════════════════════════════════════
       Navigation
    ══════════════════════════════════════ */
    .nav {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 500;
      height: var(--nav-h);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 20px;
      transition: background 0.4s ease, box-shadow 0.4s ease;
    }
.nav.scrolled {
      background: rgba(250,246,238,0.95);
      backdrop-filter: blur(8px);
      box-shadow: 0 1px 0 var(--line);
    }
/* 内部ページ: navは常にscrolled状態 */
    .nav.always-visible {
      background: rgba(250,246,238,0.95);
      backdrop-filter: blur(8px);
      box-shadow: 0 1px 0 var(--line);
    }
/* フロントページ: ハンバーガー・PCリンクはヒーロー通過後に表示 */
    .nav-toggle {
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.4s ease, background 0.4s ease, transform 0.3s ease;
    }
.nav-links-pc {
      display: none;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.4s ease;
    }
.nav.visible .nav-toggle {
      opacity: 1;
      pointer-events: auto;
    }
.nav.visible .nav-links-pc {
      opacity: 1;
      pointer-events: auto;
    }
/* 内部ページ: 常に表示 */
    .nav.always-visible .nav-toggle {
      opacity: 1;
      pointer-events: auto;
    }
.nav.always-visible .nav-links-pc {
      opacity: 1;
      pointer-events: auto;
    }
.nav-logo {
      display: block;
      height: 28px;
      width: auto;
    }
.nav-logo img {
      height: 100%;
      width: auto;
      display: block;
      transition: filter 0.4s ease;
    }
/* フロントページのみ: スクロール前はロゴを白く */
    .nav:not(.scrolled):not(.always-visible) .nav-logo img {
      filter: invert(1) brightness(2);
    }
.nav.scrolled .nav-logo img,
    .nav.always-visible .nav-logo img {
      filter: none;
    }
/* Hamburger */
    .nav-toggle {
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 6px;
      width: 32px;
      height: 32px;
      background: none;
      border: none;
      cursor: pointer;
      padding: 0;
    }
.nav-toggle span {
      display: block;
      height: 1px;
      background: var(--white);
      transition: background 0.4s ease, transform 0.3s ease, opacity 0.3s ease;
      transform-origin: center;
    }
.nav.scrolled .nav-toggle span,
    .nav.always-visible .nav-toggle span {
      background:var(--ink-deep);
    }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
/* Menu Drawer */
    .nav-drawer {
      position: fixed;
      inset: 0;
      background:var(--ink-deep);
      z-index: 490;
      display: flex;
      flex-direction: column;
      /* 2026-09-09 修正：中央寄せ(center)だと、項目が画面に収まらないとき
         上下に等分にはみ出し、はみ出した上側にはスクロールで到達できない。
         flex-start＋margin:auto で「余裕があるときだけ中央」に変える。 */
      justify-content: flex-start;
      padding: calc(80px + env(safe-area-inset-top)) 32px calc(48px + env(safe-area-inset-bottom));
      overflow-y: auto;                 /* 収まらなければスクロールできる */
      overscroll-behavior: contain;     /* 背面のページを巻き込まない */
      -webkit-overflow-scrolling: touch;
      visibility: hidden;               /* 閉じている間はキーボードでも触れない */
      transform: translateX(100%);
      transition: transform 0.5s cubic-bezier(0.77,0,0.18,1), visibility 0s linear 0.5s;
    }
.nav-drawer.open {
      transform: translateX(0);
      visibility: visible;
      transition: transform 0.5s cubic-bezier(0.77,0,0.18,1), visibility 0s;
    }
/* 余白があるときだけ中央に寄せる（足りなければ上端から並ぶ） */
    .nav-drawer-links { margin-top: auto; }
.nav-drawer-cta   { margin-bottom: auto; }
.nav-drawer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0;
    }
.nav-drawer-links li {
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }
.nav-drawer-links a {
      display: block;
      padding: 20px 0;
      font-size: 1.1rem;
      letter-spacing: 0.15em;
      color: rgba(255,255,255,0.85);
      transition: color 0.2s ease, padding-left 0.3s ease;
    }
.nav-drawer-links a:hover {
      color: var(--bronze-light);
      padding-left: 8px;
    }
.nav-drawer-divider {
      border-bottom: none !important;
      padding: 8px 0 0;
      margin-top: 8px;
      border-top: 1px solid rgba(255,255,255,0.08) !important;
    }
.nav-drawer-cta {
      margin-top: 32px;
    }
.nav-drawer-cta a {
      display: block;
      text-align: center;
      padding: 16px;
      border: 1px solid var(--bronze);
      font-size: 0.85rem;
      letter-spacing: 0.25em;
      color: var(--bronze-light);
    }
@media (min-width: 1024px) {
      .nav-links-pc {
        gap: 32px;
      }

      .nav-links-pc a {
        font-size: 0.75rem;
        letter-spacing: 0.15em;
        color: rgba(255,255,255,0.85);
        transition: color 0.3s ease;
        position: relative;
      }

      .nav-links-pc a::after {
        content: '';
        position: absolute;
        bottom: -3px;
        left: 0;
        width: 0;
        height: 1px;
        background: var(--bronze-light);
        transition: width 0.3s ease;
      }

      .nav-links-pc a:hover::after { width: 100%; }

      .nav.scrolled .nav-links-pc a,
      .nav.always-visible .nav-links-pc a {
        color: var(--ink-muted);
      }

      .nav.scrolled .nav-links-pc a::after,
      .nav.always-visible .nav-links-pc a::after {
        background: var(--bronze);
      }
    }
/* ══════════════════════════════════════
       Footer
    ══════════════════════════════════════ */
    .footer {
      background: #2b241d;
      padding: 48px 24px 32px;
    }
.footer-top {
      display: flex;
      flex-direction: column;
      gap: 32px;
      padding-bottom: 32px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
.footer-logo img {
      height: 32px;
      width: auto;
      filter: invert(1) brightness(0.8);
      opacity: 0.75;
    }
/* SNS（フッター） */
    .footer-sns {
      display: flex;
      gap: 14px;
      margin-top: 18px;
    }
.footer-sns a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 34px;
      height: 34px;
      border: 1px solid rgba(255,255,255,0.22);
      color: rgba(255,255,255,0.55);
      transition: color 0.25s ease, border-color 0.25s ease;
    }
.footer-sns a:hover {
      color: var(--bronze-light);
      border-color: var(--bronze-light);
    }
.footer-sns svg { width: 17px; height: 17px; }
.footer-tagline {
      font-size: 0.72rem;
      letter-spacing: 0.15em;
      color: rgba(255,255,255,0.45);
      margin-top: 8px;
    }
.footer-nav {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px 48px;
    }
.footer-nav-label {
      display: block;
      font-family: var(--font-en);
      font-style: italic;
      font-size: 0.62rem;
      letter-spacing: 0.35em;
      color: var(--bronze-light);
      margin-bottom: 14px;
    }
.footer-nav-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
.footer-nav-list a {
      font-size: 0.75rem;
      letter-spacing: 0.12em;
      color: rgba(255,255,255,0.6);
      transition: color 0.2s ease;
    }
.footer-nav-list a:hover {
      color: var(--bronze-light);
    }
.footer-bottom {
      padding-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
.footer-copy {
      font-family: var(--font-en);
      font-size: 0.65rem;
      letter-spacing: 0.2em;
      color: rgba(255,255,255,0.2);
    }
@media (min-width: 768px) {
      .footer {
        padding: 64px 64px 40px;
      }

      .footer-top {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
      }

      .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
      }
    }